/** * @licstart The following is the entire license notice for the * JavaScript code in this page * * Copyright 2024 Mozilla Foundation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * @licend The above is the entire license notice for the * JavaScript code in this page */ ;// ./web/pdfjs.js const { AbortException, AnnotationEditorLayer, AnnotationEditorParamsType, AnnotationEditorType, AnnotationEditorUIManager, AnnotationLayer, AnnotationMode, AnnotationType, build, ColorPicker, createValidAbsoluteUrl, DOMSVGFactory, DrawLayer, FeatureTest, fetchData, getDocument, getFilenameFromUrl, getPdfFilenameFromUrl, getUuid, getXfaPageViewport, GlobalWorkerOptions, ImageKind, InvalidPDFException, isDataScheme, isPdfFile, isValidExplicitDest, MathClamp, noContextMenu, normalizeUnicode, OPS, OutputScale, PasswordResponses, PDFDataRangeTransport, PDFDateString, PDFWorker, PermissionFlag, PixelsPerInch, RenderingCancelledException, ResponseException, setLayerDimensions, shadow, SignatureExtractor, stopEvent, SupportedImageMimeTypes, TextLayer, TouchManager, updateUrlHash, Util, VerbosityLevel, version, XfaLayer } = globalThis.pdfjsLib; ;// ./web/ui_utils.js const DEFAULT_SCALE_VALUE = "auto"; const DEFAULT_SCALE = 1.0; const DEFAULT_SCALE_DELTA = 1.1; const MIN_SCALE = 0.1; const MAX_SCALE = 10.0; const UNKNOWN_SCALE = 0; const MAX_AUTO_SCALE = 1.25; const SCROLLBAR_PADDING = 40; const VERTICAL_PADDING = 5; const RenderingStates = { INITIAL: 0, RUNNING: 1, PAUSED: 2, FINISHED: 3 }; const PresentationModeState = { UNKNOWN: 0, NORMAL: 1, CHANGING: 2, FULLSCREEN: 3 }; const SidebarView = { UNKNOWN: -1, NONE: 0, THUMBS: 1, OUTLINE: 2, ATTACHMENTS: 3, LAYERS: 4 }; const TextLayerMode = { DISABLE: 0, ENABLE: 1, ENABLE_PERMISSIONS: 2 }; const ScrollMode = { UNKNOWN: -1, VERTICAL: 0, HORIZONTAL: 1, WRAPPED: 2, PAGE: 3 }; const SpreadMode = { UNKNOWN: -1, NONE: 0, ODD: 1, EVEN: 2 }; const CursorTool = { SELECT: 0, HAND: 1, ZOOM: 2 }; const AutoPrintRegExp = /\bprint\s*\(/; function scrollIntoView(element, spot, scrollMatches = false) { let parent = element.offsetParent; if (!parent) { console.error("offsetParent is not set -- cannot scroll"); return; } let offsetY = element.offsetTop + element.clientTop; let offsetX = element.offsetLeft + element.clientLeft; while (parent.clientHeight === parent.scrollHeight && parent.clientWidth === parent.scrollWidth || scrollMatches && (parent.classList.contains("markedContent") || getComputedStyle(parent).overflow === "hidden")) { offsetY += parent.offsetTop; offsetX += parent.offsetLeft; parent = parent.offsetParent; if (!parent) { return; } } if (spot) { if (spot.top !== undefined) { offsetY += spot.top; } if (spot.left !== undefined) { offsetX += spot.left; parent.scrollLeft = offsetX; } } parent.scrollTop = offsetY; } function watchScroll(viewAreaElement, callback, abortSignal = undefined) { const debounceScroll = function (evt) { if (rAF) { return; } rAF = window.requestAnimationFrame(function viewAreaElementScrolled() { rAF = null; const currentX = viewAreaElement.scrollLeft; const lastX = state.lastX; if (currentX !== lastX) { state.right = currentX > lastX; } state.lastX = currentX; const currentY = viewAreaElement.scrollTop; const lastY = state.lastY; if (currentY !== lastY) { state.down = currentY > lastY; } state.lastY = currentY; callback(state); }); }; const state = { right: true, down: true, lastX: viewAreaElement.scrollLeft, lastY: viewAreaElement.scrollTop, _eventHandler: debounceScroll }; let rAF = null; viewAreaElement.addEventListener("scroll", debounceScroll, { useCapture: true, signal: abortSignal }); abortSignal?.addEventListener("abort", () => window.cancelAnimationFrame(rAF), { once: true }); return state; } function parseQueryString(query) { const params = new Map(); for (const [key, value] of new URLSearchParams(query)) { params.set(key.toLowerCase(), value); } return params; } const InvisibleCharsRegExp = /[\x00-\x1F]/g; function removeNullCharacters(str, replaceInvisible = false) { if (!InvisibleCharsRegExp.test(str)) { return str; } if (replaceInvisible) { return str.replaceAll(InvisibleCharsRegExp, m => m === "\x00" ? "" : " "); } return str.replaceAll("\x00", ""); } function binarySearchFirstItem(items, condition, start = 0) { let minIndex = start; let maxIndex = items.length - 1; if (maxIndex < 0 || !condition(items[maxIndex])) { return items.length; } if (condition(items[minIndex])) { return minIndex; } while (minIndex < maxIndex) { const currentIndex = minIndex + maxIndex >> 1; const currentItem = items[currentIndex]; if (condition(currentItem)) { maxIndex = currentIndex; } else { minIndex = currentIndex + 1; } } return minIndex; } function approximateFraction(x) { if (Math.floor(x) === x) { return [x, 1]; } const xinv = 1 / x; const limit = 8; if (xinv > limit) { return [1, limit]; } else if (Math.floor(xinv) === xinv) { return [1, xinv]; } const x_ = x > 1 ? xinv : x; let a = 0, b = 1, c = 1, d = 1; while (true) { const p = a + c, q = b + d; if (q > limit) { break; } if (x_ <= p / q) { c = p; d = q; } else { a = p; b = q; } } let result; if (x_ - a / b < c / d - x_) { result = x_ === x ? [a, b] : [b, a]; } else { result = x_ === x ? [c, d] : [d, c]; } return result; } function floorToDivide(x, div) { return x - x % div; } function getPageSizeInches({ view, userUnit, rotate }) { const [x1, y1, x2, y2] = view; const changeOrientation = rotate % 180 !== 0; const width = (x2 - x1) / 72 * userUnit; const height = (y2 - y1) / 72 * userUnit; return { width: changeOrientation ? height : width, height: changeOrientation ? width : height }; } function backtrackBeforeAllVisibleElements(index, views, top) { if (index < 2) { return index; } let elt = views[index].div; let pageTop = elt.offsetTop + elt.clientTop; if (pageTop >= top) { elt = views[index - 1].div; pageTop = elt.offsetTop + elt.clientTop; } for (let i = index - 2; i >= 0; --i) { elt = views[i].div; if (elt.offsetTop + elt.clientTop + elt.clientHeight <= pageTop) { break; } index = i; } return index; } function getVisibleElements({ scrollEl, views, sortByVisibility = false, horizontal = false, rtl = false }) { const top = scrollEl.scrollTop, bottom = top + scrollEl.clientHeight; const left = scrollEl.scrollLeft, right = left + scrollEl.clientWidth; function isElementBottomAfterViewTop(view) { const element = view.div; const elementBottom = element.offsetTop + element.clientTop + element.clientHeight; return elementBottom > top; } function isElementNextAfterViewHorizontally(view) { const element = view.div; const elementLeft = element.offsetLeft + element.clientLeft; const elementRight = elementLeft + element.clientWidth; return rtl ? elementLeft < right : elementRight > left; } const visible = [], ids = new Set(), numViews = views.length; let firstVisibleElementInd = binarySearchFirstItem(views, horizontal ? isElementNextAfterViewHorizontally : isElementBottomAfterViewTop); if (firstVisibleElementInd > 0 && firstVisibleElementInd < numViews && !horizontal) { firstVisibleElementInd = backtrackBeforeAllVisibleElements(firstVisibleElementInd, views, top); } let lastEdge = horizontal ? right : -1; for (let i = firstVisibleElementInd; i < numViews; i++) { const view = views[i], element = view.div; const currentWidth = element.offsetLeft + element.clientLeft; const currentHeight = element.offsetTop + element.clientTop; const viewWidth = element.clientWidth, viewHeight = element.clientHeight; const viewRight = currentWidth + viewWidth; const viewBottom = currentHeight + viewHeight; if (lastEdge === -1) { if (viewBottom >= bottom) { lastEdge = viewBottom; } } else if ((horizontal ? currentWidth : currentHeight) > lastEdge) { break; } if (viewBottom <= top || currentHeight >= bottom || viewRight <= left || currentWidth >= right) { continue; } const minY = Math.max(0, top - currentHeight); const minX = Math.max(0, left - currentWidth); const hiddenHeight = minY + Math.max(0, viewBottom - bottom); const hiddenWidth = minX + Math.max(0, viewRight - right); const fractionHeight = (viewHeight - hiddenHeight) / viewHeight, fractionWidth = (viewWidth - hiddenWidth) / viewWidth; const percent = fractionHeight * fractionWidth * 100 | 0; visible.push({ id: view.id, x: currentWidth, y: currentHeight, visibleArea: percent === 100 ? null : { minX, minY, maxX: Math.min(viewRight, right) - currentWidth, maxY: Math.min(viewBottom, bottom) - currentHeight }, view, percent, widthPercent: fractionWidth * 100 | 0 }); ids.add(view.id); } const first = visible[0], last = visible.at(-1); if (sortByVisibility) { visible.sort(function (a, b) { const pc = a.percent - b.percent; if (Math.abs(pc) > 0.001) { return -pc; } return a.id - b.id; }); } return { first, last, views: visible, ids }; } function normalizeWheelEventDirection(evt) { let delta = Math.hypot(evt.deltaX, evt.deltaY); const angle = Math.atan2(evt.deltaY, evt.deltaX); if (-0.25 * Math.PI < angle && angle < 0.75 * Math.PI) { delta = -delta; } return delta; } function normalizeWheelEventDelta(evt) { const deltaMode = evt.deltaMode; let delta = normalizeWheelEventDirection(evt); const MOUSE_PIXELS_PER_LINE = 30; const MOUSE_LINES_PER_PAGE = 30; if (deltaMode === WheelEvent.DOM_DELTA_PIXEL) { delta /= MOUSE_PIXELS_PER_LINE * MOUSE_LINES_PER_PAGE; } else if (deltaMode === WheelEvent.DOM_DELTA_LINE) { delta /= MOUSE_LINES_PER_PAGE; } return delta; } function isValidRotation(angle) { return Number.isInteger(angle) && angle % 90 === 0; } function isValidScrollMode(mode) { return Number.isInteger(mode) && Object.values(ScrollMode).includes(mode) && mode !== ScrollMode.UNKNOWN; } function isValidSpreadMode(mode) { return Number.isInteger(mode) && Object.values(SpreadMode).includes(mode) && mode !== SpreadMode.UNKNOWN; } function isPortraitOrientation(size) { return size.width <= size.height; } const animationStarted = new Promise(function (resolve) { window.requestAnimationFrame(resolve); }); const docStyle = document.documentElement.style; class ProgressBar { #classList = null; #disableAutoFetchTimeout = null; #percent = 0; #style = null; #visible = true; constructor(bar) { this.#classList = bar.classList; this.#style = bar.style; } get percent() { return this.#percent; } set percent(val) { this.#percent = MathClamp(val, 0, 100); if (isNaN(val)) { this.#classList.add("indeterminate"); return; } this.#classList.remove("indeterminate"); this.#style.setProperty("--progressBar-percent", `${this.#percent}%`); } setWidth(viewer) { if (!viewer) { return; } const container = viewer.parentNode; const scrollbarWidth = container.offsetWidth - viewer.offsetWidth; if (scrollbarWidth > 0) { this.#style.setProperty("--progressBar-end-offset", `${scrollbarWidth}px`); } } setDisableAutoFetch(delay = 5000) { if (this.#percent === 100 || isNaN(this.#percent)) { return; } if (this.#disableAutoFetchTimeout) { clearTimeout(this.#disableAutoFetchTimeout); } this.show(); this.#disableAutoFetchTimeout = setTimeout(() => { this.#disableAutoFetchTimeout = null; this.hide(); }, delay); } hide() { if (!this.#visible) { return; } this.#visible = false; this.#classList.add("hidden"); } show() { if (this.#visible) { return; } this.#visible = true; this.#classList.remove("hidden"); } } function getActiveOrFocusedElement() { let curRoot = document; let curActiveOrFocused = curRoot.activeElement || curRoot.querySelector(":focus"); while (curActiveOrFocused?.shadowRoot) { curRoot = curActiveOrFocused.shadowRoot; curActiveOrFocused = curRoot.activeElement || curRoot.querySelector(":focus"); } return curActiveOrFocused; } function apiPageLayoutToViewerModes(layout) { let scrollMode = ScrollMode.VERTICAL, spreadMode = SpreadMode.NONE; switch (layout) { case "SinglePage": scrollMode = ScrollMode.PAGE; break; case "OneColumn": break; case "TwoPageLeft": scrollMode = ScrollMode.PAGE; case "TwoColumnLeft": spreadMode = SpreadMode.ODD; break; case "TwoPageRight": scrollMode = ScrollMode.PAGE; case "TwoColumnRight": spreadMode = SpreadMode.EVEN; break; } return { scrollMode, spreadMode }; } function apiPageModeToSidebarView(mode) { switch (mode) { case "UseNone": return SidebarView.NONE; case "UseThumbs": return SidebarView.THUMBS; case "UseOutlines": return SidebarView.OUTLINE; case "UseAttachments": return SidebarView.ATTACHMENTS; case "UseOC": return SidebarView.LAYERS; } return SidebarView.NONE; } function toggleCheckedBtn(button, toggle, view = null) { button.classList.toggle("toggled", toggle); button.setAttribute("aria-checked", toggle); view?.classList.toggle("hidden", !toggle); } function toggleExpandedBtn(button, toggle, view = null) { button.classList.toggle("toggled", toggle); button.setAttribute("aria-expanded", toggle); view?.classList.toggle("hidden", !toggle); } const calcRound = Math.fround; ;// ./web/app_options.js const OptionKind = { BROWSER: 0x01, VIEWER: 0x02, API: 0x04, WORKER: 0x08, EVENT_DISPATCH: 0x10, PREFERENCE: 0x80 }; const Type = { BOOLEAN: 0x01, NUMBER: 0x02, OBJECT: 0x04, STRING: 0x08, UNDEFINED: 0x10 }; const defaultOptions = { allowedGlobalEvents: { value: null, kind: OptionKind.BROWSER }, canvasMaxAreaInBytes: { value: -1, kind: OptionKind.BROWSER + OptionKind.API }, isInAutomation: { value: false, kind: OptionKind.BROWSER }, localeProperties: { value: null, kind: OptionKind.BROWSER }, maxCanvasDim: { value: 32767, kind: OptionKind.BROWSER + OptionKind.VIEWER }, nimbusDataStr: { value: "", kind: OptionKind.BROWSER }, supportsCaretBrowsingMode: { value: false, kind: OptionKind.BROWSER }, supportsDocumentFonts: { value: true, kind: OptionKind.BROWSER }, supportsIntegratedFind: { value: false, kind: OptionKind.BROWSER }, supportsMouseWheelZoomCtrlKey: { value: true, kind: OptionKind.BROWSER }, supportsMouseWheelZoomMetaKey: { value: true, kind: OptionKind.BROWSER }, supportsPinchToZoom: { value: true, kind: OptionKind.BROWSER }, supportsPrinting: { value: true, kind: OptionKind.BROWSER }, toolbarDensity: { value: 0, kind: OptionKind.BROWSER + OptionKind.EVENT_DISPATCH }, altTextLearnMoreUrl: { value: "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/pdf-alt-text", kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, annotationEditorMode: { value: 0, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, annotationMode: { value: 2, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, capCanvasAreaFactor: { value: 200, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, cursorToolOnLoad: { value: 0, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, debuggerSrc: { value: "./debugger.mjs", kind: OptionKind.VIEWER }, defaultZoomDelay: { value: 400, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, defaultZoomValue: { value: "", kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, disableHistory: { value: false, kind: OptionKind.VIEWER }, disablePageLabels: { value: false, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, enableAltText: { value: false, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, enableAltTextModelDownload: { value: true, kind: OptionKind.VIEWER + OptionKind.PREFERENCE + OptionKind.EVENT_DISPATCH }, enableAutoLinking: { value: true, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, enableDetailCanvas: { value: true, kind: OptionKind.VIEWER }, enableGuessAltText: { value: true, kind: OptionKind.VIEWER + OptionKind.PREFERENCE + OptionKind.EVENT_DISPATCH }, enableHighlightFloatingButton: { value: false, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, enableNewAltTextWhenAddingImage: { value: true, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, enablePermissions: { value: false, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, enablePrintAutoRotate: { value: true, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, enableScripting: { value: true, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, enableSignatureEditor: { value: false, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, enableUpdatedAddImage: { value: false, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, externalLinkRel: { value: "noopener noreferrer nofollow", kind: OptionKind.VIEWER }, externalLinkTarget: { value: 0, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, highlightEditorColors: { value: "yellow=#FFFF98,green=#53FFBC,blue=#80EBFF,pink=#FFCBE6,red=#FF4F5F", kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, historyUpdateUrl: { value: false, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, ignoreDestinationZoom: { value: false, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, imageResourcesPath: { value: "resource://pdf.js/web/images/", kind: OptionKind.VIEWER }, maxCanvasPixels: { value: 2 ** 25, kind: OptionKind.VIEWER }, minDurationToUpdateCanvas: { value: 500, kind: OptionKind.VIEWER }, forcePageColors: { value: false, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, pageColorsBackground: { value: "Canvas", kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, pageColorsForeground: { value: "CanvasText", kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, pdfBugEnabled: { value: false, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, printResolution: { value: 150, kind: OptionKind.VIEWER }, sidebarViewOnLoad: { value: -1, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, scrollModeOnLoad: { value: -1, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, spreadModeOnLoad: { value: -1, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, textLayerMode: { value: 1, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, viewerCssTheme: { value: 0, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, viewOnLoad: { value: 0, kind: OptionKind.VIEWER + OptionKind.PREFERENCE }, cMapPacked: { value: true, kind: OptionKind.API }, cMapUrl: { value: "resource://pdf.js/web/cmaps/", kind: OptionKind.API }, disableAutoFetch: { value: false, kind: OptionKind.API + OptionKind.PREFERENCE }, disableFontFace: { value: false, kind: OptionKind.API + OptionKind.PREFERENCE }, disableRange: { value: false, kind: OptionKind.API + OptionKind.PREFERENCE }, disableStream: { value: false, kind: OptionKind.API + OptionKind.PREFERENCE }, docBaseUrl: { value: "", kind: OptionKind.API }, enableHWA: { value: false, kind: OptionKind.API + OptionKind.VIEWER + OptionKind.PREFERENCE }, enableXfa: { value: true, kind: OptionKind.API + OptionKind.PREFERENCE }, fontExtraProperties: { value: false, kind: OptionKind.API }, iccUrl: { value: "resource://pdf.js/web/iccs/", kind: OptionKind.API }, isEvalSupported: { value: true, kind: OptionKind.API }, isOffscreenCanvasSupported: { value: true, kind: OptionKind.API }, maxImageSize: { value: -1, kind: OptionKind.API }, pdfBug: { value: false, kind: OptionKind.API }, standardFontDataUrl: { value: "resource://pdf.js/web/standard_fonts/", kind: OptionKind.API }, useSystemFonts: { value: false, kind: OptionKind.API, type: Type.BOOLEAN + Type.UNDEFINED }, verbosity: { value: 1, kind: OptionKind.API }, wasmUrl: { value: "resource://pdf.js/web/wasm/", kind: OptionKind.API }, workerPort: { value: null, kind: OptionKind.WORKER }, workerSrc: { value: "resource://pdf.js/build/pdf.worker.mjs", kind: OptionKind.WORKER } }; class AppOptions { static eventBus; static #opts = new Map(); static { for (const name in defaultOptions) { this.#opts.set(name, defaultOptions[name].value); } } static get(name) { return this.#opts.get(name); } static getAll(kind = null, defaultOnly = false) { const options = Object.create(null); for (const name in defaultOptions) { const defaultOpt = defaultOptions[name]; if (kind && !(kind & defaultOpt.kind)) { continue; } options[name] = !defaultOnly ? this.#opts.get(name) : defaultOpt.value; } return options; } static set(name, value) { this.setAll({ [name]: value }); } static setAll(options, prefs = false) { let events; for (const name in options) { const defaultOpt = defaultOptions[name], userOpt = options[name]; if (!defaultOpt || !(typeof userOpt === typeof defaultOpt.value || Type[(typeof userOpt).toUpperCase()] & defaultOpt.type)) { continue; } const { kind } = defaultOpt; if (prefs && !(kind & OptionKind.BROWSER || kind & OptionKind.PREFERENCE)) { continue; } if (this.eventBus && kind & OptionKind.EVENT_DISPATCH) { (events ||= new Map()).set(name, userOpt); } this.#opts.set(name, userOpt); } if (events) { for (const [name, value] of events) { this.eventBus.dispatch(name.toLowerCase(), { source: this, value }); } } } } ;// ./web/pdf_link_service.js const DEFAULT_LINK_REL = "noopener noreferrer nofollow"; const LinkTarget = { NONE: 0, SELF: 1, BLANK: 2, PARENT: 3, TOP: 4 }; class PDFLinkService { externalLinkEnabled = true; constructor({ eventBus, externalLinkTarget = null, externalLinkRel = null, ignoreDestinationZoom = false } = {}) { this.eventBus = eventBus; this.externalLinkTarget = externalLinkTarget; this.externalLinkRel = externalLinkRel; this._ignoreDestinationZoom = ignoreDestinationZoom; this.baseUrl = null; this.pdfDocument = null; this.pdfViewer = null; this.pdfHistory = null; } setDocument(pdfDocument, baseUrl = null) { this.baseUrl = baseUrl; this.pdfDocument = pdfDocument; } setViewer(pdfViewer) { this.pdfViewer = pdfViewer; } setHistory(pdfHistory) { this.pdfHistory = pdfHistory; } get pagesCount() { return this.pdfDocument ? this.pdfDocument.numPages : 0; } get page() { return this.pdfDocument ? this.pdfViewer.currentPageNumber : 1; } set page(value) { if (this.pdfDocument) { this.pdfViewer.currentPageNumber = value; } } get rotation() { return this.pdfDocument ? this.pdfViewer.pagesRotation : 0; } set rotation(value) { if (this.pdfDocument) { this.pdfViewer.pagesRotation = value; } } get isInPresentationMode() { return this.pdfDocument ? this.pdfViewer.isInPresentationMode : false; } async goToDestination(dest) { if (!this.pdfDocument) { return; } let namedDest, explicitDest, pageNumber; if (typeof dest === "string") { namedDest = dest; explicitDest = await this.pdfDocument.getDestination(dest); } else { namedDest = null; explicitDest = await dest; } if (!Array.isArray(explicitDest)) { console.error(`goToDestination: "${explicitDest}" is not a valid destination array, for dest="${dest}".`); return; } const [destRef] = explicitDest; if (destRef && typeof destRef === "object") { pageNumber = this.pdfDocument.cachedPageNumber(destRef); if (!pageNumber) { try { pageNumber = (await this.pdfDocument.getPageIndex(destRef)) + 1; } catch { console.error(`goToDestination: "${destRef}" is not a valid page reference, for dest="${dest}".`); return; } } } else if (Number.isInteger(destRef)) { pageNumber = destRef + 1; } if (!pageNumber || pageNumber < 1 || pageNumber > this.pagesCount) { console.error(`goToDestination: "${pageNumber}" is not a valid page number, for dest="${dest}".`); return; } if (this.pdfHistory) { this.pdfHistory.pushCurrentPosition(); this.pdfHistory.push({ namedDest, explicitDest, pageNumber }); } this.pdfViewer.scrollPageIntoView({ pageNumber, destArray: explicitDest, ignoreDestinationZoom: this._ignoreDestinationZoom }); } goToPage(val) { if (!this.pdfDocument) { return; } const pageNumber = typeof val === "string" && this.pdfViewer.pageLabelToPageNumber(val) || val | 0; if (!(Number.isInteger(pageNumber) && pageNumber > 0 && pageNumber <= this.pagesCount)) { console.error(`PDFLinkService.goToPage: "${val}" is not a valid page.`); return; } if (this.pdfHistory) { this.pdfHistory.pushCurrentPosition(); this.pdfHistory.pushPage(pageNumber); } this.pdfViewer.scrollPageIntoView({ pageNumber }); } addLinkAttributes(link, url, newWindow = false) { if (!url || typeof url !== "string") { throw new Error('A valid "url" parameter must provided.'); } const target = newWindow ? LinkTarget.BLANK : this.externalLinkTarget, rel = this.externalLinkRel; if (this.externalLinkEnabled) { link.href = link.title = url; } else { link.href = ""; link.title = `Disabled: ${url}`; link.onclick = () => false; } let targetStr = ""; switch (target) { case LinkTarget.NONE: break; case LinkTarget.SELF: targetStr = "_self"; break; case LinkTarget.BLANK: targetStr = "_blank"; break; case LinkTarget.PARENT: targetStr = "_parent"; break; case LinkTarget.TOP: targetStr = "_top"; break; } link.target = targetStr; link.rel = typeof rel === "string" ? rel : DEFAULT_LINK_REL; } getDestinationHash(dest) { if (typeof dest === "string") { if (dest.length > 0) { return this.getAnchorUrl("#" + escape(dest)); } } else if (Array.isArray(dest)) { const str = JSON.stringify(dest); if (str.length > 0) { return this.getAnchorUrl("#" + escape(str)); } } return this.getAnchorUrl(""); } getAnchorUrl(anchor) { return this.baseUrl ? this.baseUrl + anchor : anchor; } setHash(hash) { if (!this.pdfDocument) { return; } let pageNumber, dest; if (hash.includes("=")) { const params = parseQueryString(hash); if (params.has("search")) { const query = params.get("search").replaceAll('"', ""), phrase = params.get("phrase") === "true"; this.eventBus.dispatch("findfromurlhash", { source: this, query: phrase ? query : query.match(/\S+/g) }); } if (params.has("page")) { pageNumber = params.get("page") | 0 || 1; } if (params.has("zoom")) { const zoomArgs = params.get("zoom").split(","); const zoomArg = zoomArgs[0]; const zoomArgNumber = parseFloat(zoomArg); if (!zoomArg.includes("Fit")) { dest = [null, { name: "XYZ" }, zoomArgs.length > 1 ? zoomArgs[1] | 0 : null, zoomArgs.length > 2 ? zoomArgs[2] | 0 : null, zoomArgNumber ? zoomArgNumber / 100 : zoomArg]; } else if (zoomArg === "Fit" || zoomArg === "FitB") { dest = [null, { name: zoomArg }]; } else if (zoomArg === "FitH" || zoomArg === "FitBH" || zoomArg === "FitV" || zoomArg === "FitBV") { dest = [null, { name: zoomArg }, zoomArgs.length > 1 ? zoomArgs[1] | 0 : null]; } else if (zoomArg === "FitR") { if (zoomArgs.length !== 5) { console.error('PDFLinkService.setHash: Not enough parameters for "FitR".'); } else { dest = [null, { name: zoomArg }, zoomArgs[1] | 0, zoomArgs[2] | 0, zoomArgs[3] | 0, zoomArgs[4] | 0]; } } else { console.error(`PDFLinkService.setHash: "${zoomArg}" is not a valid zoom value.`); } } if (dest) { this.pdfViewer.scrollPageIntoView({ pageNumber: pageNumber || this.page, destArray: dest, allowNegativeOffset: true }); } else if (pageNumber) { this.page = pageNumber; } if (params.has("pagemode")) { this.eventBus.dispatch("pagemode", { source: this, mode: params.get("pagemode") }); } if (params.has("nameddest")) { this.goToDestination(params.get("nameddest")); } if (!params.has("filename") || !params.has("filedest")) { return; } hash = params.get("filedest"); } dest = unescape(hash); try { dest = JSON.parse(dest); if (!Array.isArray(dest)) { dest = dest.toString(); } } catch {} if (typeof dest === "string" || isValidExplicitDest(dest)) { this.goToDestination(dest); return; } console.error(`PDFLinkService.setHash: "${unescape(hash)}" is not a valid destination.`); } executeNamedAction(action) { if (!this.pdfDocument) { return; } switch (action) { case "GoBack": this.pdfHistory?.back(); break; case "GoForward": this.pdfHistory?.forward(); break; case "NextPage": this.pdfViewer.nextPage(); break; case "PrevPage": this.pdfViewer.previousPage(); break; case "LastPage": this.page = this.pagesCount; break; case "FirstPage": this.page = 1; break; default: break; } this.eventBus.dispatch("namedaction", { source: this, action }); } async executeSetOCGState(action) { if (!this.pdfDocument) { return; } const pdfDocument = this.pdfDocument, optionalContentConfig = await this.pdfViewer.optionalContentConfigPromise; if (pdfDocument !== this.pdfDocument) { return; } optionalContentConfig.setOCGState(action); this.pdfViewer.optionalContentConfigPromise = Promise.resolve(optionalContentConfig); } } class SimpleLinkService extends PDFLinkService { setDocument(pdfDocument, baseUrl = null) {} } ;// ./web/event_utils.js const WaitOnType = { EVENT: "event", TIMEOUT: "timeout" }; async function waitOnEventOrTimeout({ target, name, delay = 0 }) { if (typeof target !== "object" || !(name && typeof name === "string") || !(Number.isInteger(delay) && delay >= 0)) { throw new Error("waitOnEventOrTimeout - invalid parameters."); } const { promise, resolve } = Promise.withResolvers(); const ac = new AbortController(); function handler(type) { ac.abort(); clearTimeout(timeout); resolve(type); } const evtMethod = target instanceof EventBus ? "_on" : "addEventListener"; target[evtMethod](name, handler.bind(null, WaitOnType.EVENT), { signal: ac.signal }); const timeout = setTimeout(handler.bind(null, WaitOnType.TIMEOUT), delay); return promise; } class EventBus { #listeners = Object.create(null); on(eventName, listener, options = null) { this._on(eventName, listener, { external: true, once: options?.once, signal: options?.signal }); } off(eventName, listener, options = null) { this._off(eventName, listener); } dispatch(eventName, data) { const eventListeners = this.#listeners[eventName]; if (!eventListeners || eventListeners.length === 0) { return; } let externalListeners; for (const { listener, external, once } of eventListeners.slice(0)) { if (once) { this._off(eventName, listener); } if (external) { (externalListeners ||= []).push(listener); continue; } listener(data); } if (externalListeners) { for (const listener of externalListeners) { listener(data); } externalListeners = null; } } _on(eventName, listener, options = null) { let rmAbort = null; if (options?.signal instanceof AbortSignal) { const { signal } = options; if (signal.aborted) { console.error("Cannot use an `aborted` signal."); return; } const onAbort = () => this._off(eventName, listener); rmAbort = () => signal.removeEventListener("abort", onAbort); signal.addEventListener("abort", onAbort); } const eventListeners = this.#listeners[eventName] ||= []; eventListeners.push({ listener, external: options?.external === true, once: options?.once === true, rmAbort }); } _off(eventName, listener, options = null) { const eventListeners = this.#listeners[eventName]; if (!eventListeners) { return; } for (let i = 0, ii = eventListeners.length; i < ii; i++) { const evt = eventListeners[i]; if (evt.listener === listener) { evt.rmAbort?.(); eventListeners.splice(i, 1); return; } } } } class FirefoxEventBus extends EventBus { #externalServices; #globalEventNames; #isInAutomation; constructor(globalEventNames, externalServices, isInAutomation) { super(); this.#globalEventNames = globalEventNames; this.#externalServices = externalServices; this.#isInAutomation = isInAutomation; } dispatch(eventName, data) { super.dispatch(eventName, data); if (this.#isInAutomation) { const detail = Object.create(null); if (data) { for (const key in data) { const value = data[key]; if (key === "source") { if (value === window || value === document) { return; } continue; } detail[key] = value; } } const event = new CustomEvent(eventName, { bubbles: true, cancelable: true, detail }); document.dispatchEvent(event); } if (this.#globalEventNames?.has(eventName)) { this.#externalServices.dispatchGlobalEvent({ eventName, detail: data }); } } } ;// ./web/external_services.js class BaseExternalServices { updateFindControlState(data) {} updateFindMatchesCount(data) {} initPassiveLoading() {} reportTelemetry(data) {} async createL10n() { throw new Error("Not implemented: createL10n"); } createScripting() { throw new Error("Not implemented: createScripting"); } createSignatureStorage() { throw new Error("Not implemented: createSignatureStorage"); } updateEditorStates(data) { throw new Error("Not implemented: updateEditorStates"); } dispatchGlobalEvent(_event) {} } ;// ./web/preferences.js class BasePreferences { #defaults = Object.freeze({ altTextLearnMoreUrl: "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/pdf-alt-text", annotationEditorMode: 0, annotationMode: 2, capCanvasAreaFactor: 200, cursorToolOnLoad: 0, defaultZoomDelay: 400, defaultZoomValue: "", disablePageLabels: false, enableAltText: false, enableAltTextModelDownload: true, enableAutoLinking: true, enableGuessAltText: true, enableHighlightFloatingButton: false, enableNewAltTextWhenAddingImage: true, enablePermissions: false, enablePrintAutoRotate: true, enableScripting: true, enableSignatureEditor: false, enableUpdatedAddImage: false, externalLinkTarget: 0, highlightEditorColors: "yellow=#FFFF98,green=#53FFBC,blue=#80EBFF,pink=#FFCBE6,red=#FF4F5F", historyUpdateUrl: false, ignoreDestinationZoom: false, forcePageColors: false, pageColorsBackground: "Canvas", pageColorsForeground: "CanvasText", pdfBugEnabled: false, sidebarViewOnLoad: -1, scrollModeOnLoad: -1, spreadModeOnLoad: -1, textLayerMode: 1, viewerCssTheme: 0, viewOnLoad: 0, disableAutoFetch: false, disableFontFace: false, disableRange: false, disableStream: false, enableHWA: false, enableXfa: true }); #initializedPromise = null; constructor() { this.#initializedPromise = this._readFromStorage(this.#defaults).then(({ browserPrefs, prefs }) => { AppOptions.setAll({ ...browserPrefs, ...prefs }, true); }); window.addEventListener("updatedPreference", async ({ detail: { name, value } }) => { await this.#initializedPromise; AppOptions.setAll({ [name]: value }, true); }); } async _writeToStorage(prefObj) { throw new Error("Not implemented: _writeToStorage"); } async _readFromStorage(prefObj) { throw new Error("Not implemented: _readFromStorage"); } async reset() { throw new Error("Please use `about:config` to change preferences."); } async set(name, value) { await this.#initializedPromise; AppOptions.setAll({ [name]: value }, true); await this._writeToStorage({ [name]: AppOptions.get(name) }); } async get(name) { throw new Error("Not implemented: get"); } get initializedPromise() { return this.#initializedPromise; } } ;// ./web/l10n.js class L10n { #dir; #elements; #lang; #l10n; constructor({ lang, isRTL }, l10n = null) { this.#lang = L10n.#fixupLangCode(lang); this.#l10n = l10n; this.#dir = isRTL ?? L10n.#isRTL(this.#lang) ? "rtl" : "ltr"; } _setL10n(l10n) { this.#l10n = l10n; } getLanguage() { return this.#lang; } getDirection() { return this.#dir; } async get(ids, args = null, fallback) { if (Array.isArray(ids)) { ids = ids.map(id => ({ id })); const messages = await this.#l10n.formatMessages(ids); return messages.map(message => message.value); } const messages = await this.#l10n.formatMessages([{ id: ids, args }]); return messages[0]?.value || fallback; } async translate(element) { (this.#elements ||= new Set()).add(element); try { this.#l10n.connectRoot(element); await this.#l10n.translateRoots(); } catch {} } async translateOnce(element) { try { await this.#l10n.translateElements([element]); } catch (ex) { console.error("translateOnce:", ex); } } async destroy() { if (this.#elements) { for (const element of this.#elements) { this.#l10n.disconnectRoot(element); } this.#elements.clear(); this.#elements = null; } this.#l10n.pauseObserving(); } pause() { this.#l10n.pauseObserving(); } resume() { this.#l10n.resumeObserving(); } static #fixupLangCode(langCode) { langCode = langCode?.toLowerCase() || "en-us"; const PARTIAL_LANG_CODES = { en: "en-us", es: "es-es", fy: "fy-nl", ga: "ga-ie", gu: "gu-in", hi: "hi-in", hy: "hy-am", nb: "nb-no", ne: "ne-np", nn: "nn-no", pa: "pa-in", pt: "pt-pt", sv: "sv-se", zh: "zh-cn" }; return PARTIAL_LANG_CODES[langCode] || langCode; } static #isRTL(lang) { const shortCode = lang.split("-", 1)[0]; return ["ar", "he", "fa", "ps", "ur"].includes(shortCode); } } const GenericL10n = null; ;// ./web/firefoxcom.js let viewerApp = { initialized: false }; function initCom(app) { viewerApp = app; } class FirefoxCom { static requestAsync(action, data) { return new Promise(resolve => { this.request(action, data, resolve); }); } static request(action, data, callback = null) { const request = document.createTextNode(""); if (callback) { request.addEventListener("pdf.js.response", event => { const response = event.detail.response; event.target.remove(); callback(response); }, { once: true }); } document.documentElement.append(request); const sender = new CustomEvent("pdf.js.message", { bubbles: true, cancelable: false, detail: { action, data, responseExpected: !!callback } }); request.dispatchEvent(sender); } } class DownloadManager { #openBlobUrls = new WeakMap(); downloadData(data, filename, contentType) { const blobUrl = URL.createObjectURL(new Blob([data], { type: contentType })); FirefoxCom.request("download", { blobUrl, originalUrl: blobUrl, filename, isAttachment: true }); } openOrDownloadData(data, filename, dest = null) { const isPdfData = isPdfFile(filename); const contentType = isPdfData ? "application/pdf" : ""; if (isPdfData) { let blobUrl = this.#openBlobUrls.get(data); if (!blobUrl) { blobUrl = URL.createObjectURL(new Blob([data], { type: contentType })); this.#openBlobUrls.set(data, blobUrl); } let viewerUrl = blobUrl + "#filename=" + encodeURIComponent(filename); if (dest) { viewerUrl += `&filedest=${escape(dest)}`; } try { window.open(viewerUrl); return true; } catch (ex) { console.error("openOrDownloadData:", ex); URL.revokeObjectURL(blobUrl); this.#openBlobUrls.delete(data); } } this.downloadData(data, filename, contentType); return false; } download(data, url, filename) { const blobUrl = data ? URL.createObjectURL(new Blob([data], { type: "application/pdf" })) : null; FirefoxCom.request("download", { blobUrl, originalUrl: url, filename }); } } class Preferences extends BasePreferences { async _readFromStorage(prefObj) { return FirefoxCom.requestAsync("getPreferences", prefObj); } async _writeToStorage(prefObj) { return FirefoxCom.requestAsync("setPreferences", prefObj); } } (function listenFindEvents() { const events = ["find", "findagain", "findhighlightallchange", "findcasesensitivitychange", "findentirewordchange", "findbarclose", "finddiacriticmatchingchange"]; const findLen = "find".length; const handleEvent = function ({ type, detail }) { if (!viewerApp.initialized) { return; } if (type === "findbarclose") { viewerApp.eventBus.dispatch(type, { source: window }); return; } viewerApp.eventBus.dispatch("find", { source: window, type: type.substring(findLen), query: detail.query, caseSensitive: !!detail.caseSensitive, entireWord: !!detail.entireWord, highlightAll: !!detail.highlightAll, findPrevious: !!detail.findPrevious, matchDiacritics: !!detail.matchDiacritics }); }; for (const event of events) { window.addEventListener(event, handleEvent); } })(); (function listenZoomEvents() { const events = ["zoomin", "zoomout", "zoomreset"]; const handleEvent = function ({ type, detail }) { if (!viewerApp.initialized) { return; } if (type === "zoomreset" && viewerApp.pdfViewer.currentScaleValue === DEFAULT_SCALE_VALUE) { return; } viewerApp.eventBus.dispatch(type, { source: window }); }; for (const event of events) { window.addEventListener(event, handleEvent); } })(); (function listenSaveEvent() { const handleEvent = function ({ type, detail }) { if (!viewerApp.initialized) { return; } viewerApp.eventBus.dispatch("download", { source: window }); }; window.addEventListener("save", handleEvent); })(); (function listenEditingEvent() { const handleEvent = function ({ detail }) { if (!viewerApp.initialized) { return; } viewerApp.eventBus.dispatch("editingaction", { source: window, name: detail.name }); }; window.addEventListener("editingaction", handleEvent); })(); { (function listenQueryEvents() { window.addEventListener("pdf.js.query", async ({ detail: { queryId } }) => { let result = null; if (viewerApp.initialized && queryId === "canDownloadInsteadOfPrint") { result = false; const { pdfDocument, pdfViewer } = viewerApp; if (pdfDocument) { try { const hasUnchangedAnnotations = pdfDocument.annotationStorage.size === 0; const hasWillPrint = pdfViewer.enableScripting && !!(await pdfDocument.getJSActions())?.WillPrint; result = hasUnchangedAnnotations && !hasWillPrint; } catch { console.warn("Unable to check if the document can be downloaded."); } } } window.dispatchEvent(new CustomEvent("pdf.js.query.answer", { bubbles: true, cancelable: false, detail: { queryId, value: result } })); }); })(); } class FirefoxComDataRangeTransport extends PDFDataRangeTransport { requestDataRange(begin, end) { FirefoxCom.request("requestDataRange", { begin, end }); } abort() { FirefoxCom.request("abortLoading", null); } } class FirefoxScripting { static async createSandbox(data) { const success = await FirefoxCom.requestAsync("createSandbox", data); if (!success) { throw new Error("Cannot create sandbox."); } } static async dispatchEventInSandbox(event) { FirefoxCom.request("dispatchEventInSandbox", event); } static async destroySandbox() { FirefoxCom.request("destroySandbox", null); } } class MLManager { #abortSignal = null; #enabled = null; #eventBus = null; #ready = null; #requestResolvers = null; hasProgress = false; static #AI_ALT_TEXT_MODEL_NAME = "moz-image-to-text"; constructor({ altTextLearnMoreUrl, enableGuessAltText, enableAltTextModelDownload }) { this.altTextLearnMoreUrl = altTextLearnMoreUrl; this.enableAltTextModelDownload = enableAltTextModelDownload; this.enableGuessAltText = enableGuessAltText; } setEventBus(eventBus, abortSignal) { this.#eventBus = eventBus; this.#abortSignal = abortSignal; eventBus._on("enablealttextmodeldownload", ({ value }) => { if (this.enableAltTextModelDownload === value) { return; } if (value) { this.downloadModel("altText"); } else { this.deleteModel("altText"); } }, { signal: abortSignal }); eventBus._on("enableguessalttext", ({ value }) => { this.toggleService("altText", value); }, { signal: abortSignal }); } async isEnabledFor(name) { return this.enableGuessAltText && !!(await this.#enabled?.get(name)); } isReady(name) { return this.#ready?.has(name) ?? false; } async deleteModel(name) { if (name !== "altText" || !this.enableAltTextModelDownload) { return; } this.enableAltTextModelDownload = false; this.#ready?.delete(name); this.#enabled?.delete(name); await this.toggleService("altText", false); await FirefoxCom.requestAsync("mlDelete", MLManager.#AI_ALT_TEXT_MODEL_NAME); } async loadModel(name) { if (name === "altText" && this.enableAltTextModelDownload) { await this.#loadAltTextEngine(false); } } async downloadModel(name) { if (name !== "altText" || this.enableAltTextModelDownload) { return null; } this.enableAltTextModelDownload = true; return this.#loadAltTextEngine(true); } async guess(data) { if (data?.name !== "altText") { return null; } const resolvers = this.#requestResolvers ||= new Set(); const resolver = Promise.withResolvers(); resolvers.add(resolver); data.service = MLManager.#AI_ALT_TEXT_MODEL_NAME; FirefoxCom.requestAsync("mlGuess", data).then(response => { if (resolvers.has(resolver)) { resolver.resolve(response); resolvers.delete(resolver); } }).catch(reason => { if (resolvers.has(resolver)) { resolver.reject(reason); resolvers.delete(resolver); } }); return resolver.promise; } async #cancelAllRequests() { if (!this.#requestResolvers) { return; } for (const resolver of this.#requestResolvers) { resolver.resolve({ cancel: true }); } this.#requestResolvers.clear(); this.#requestResolvers = null; } async toggleService(name, enabled) { if (name !== "altText" || this.enableGuessAltText === enabled) { return; } this.enableGuessAltText = enabled; if (enabled) { if (this.enableAltTextModelDownload) { await this.#loadAltTextEngine(false); } } else { this.#cancelAllRequests(); } } async #loadAltTextEngine(listenToProgress) { if (this.#enabled?.has("altText")) { return; } this.#ready ||= new Set(); const promise = FirefoxCom.requestAsync("loadAIEngine", { service: MLManager.#AI_ALT_TEXT_MODEL_NAME, listenToProgress }).then(ok => { if (ok) { this.#ready.add("altText"); } return ok; }); (this.#enabled ||= new Map()).set("altText", promise); if (listenToProgress) { const ac = new AbortController(); const signal = AbortSignal.any([this.#abortSignal, ac.signal]); this.hasProgress = true; window.addEventListener("loadAIEngineProgress", ({ detail }) => { this.#eventBus.dispatch("loadaiengineprogress", { source: this, detail }); if (detail.finished) { ac.abort(); this.hasProgress = false; } }, { signal }); promise.then(ok => { if (!ok) { ac.abort(); this.hasProgress = false; } }); } await promise; } } class SignatureStorage { #eventBus = null; #signatures = null; #signal = null; constructor(eventBus, signal) { this.#eventBus = eventBus; this.#signal = signal; } #handleSignature(data) { return FirefoxCom.requestAsync("handleSignature", data); } async getAll() { if (this.#signal) { window.addEventListener("storedSignaturesChanged", () => { this.#signatures = null; this.#eventBus?.dispatch("storedsignatureschanged", { source: this }); }, { signal: this.#signal }); this.#signal = null; } if (!this.#signatures) { this.#signatures = new Map(); const data = await this.#handleSignature({ action: "get" }); if (data) { for (const { uuid, description, signatureData } of data) { this.#signatures.set(uuid, { description, signatureData }); } } } return this.#signatures; } async isFull() { return (await this.size()) === 5; } async size() { return (await this.getAll()).size; } async create(data) { if (await this.isFull()) { return null; } const uuid = await this.#handleSignature({ action: "create", ...data }); if (!uuid) { return null; } this.#signatures.set(uuid, data); return uuid; } async delete(uuid) { const signatures = await this.getAll(); if (!signatures.has(uuid)) { return false; } if (await this.#handleSignature({ action: "delete", uuid })) { signatures.delete(uuid); return true; } return false; } } class ExternalServices extends BaseExternalServices { updateFindControlState(data) { FirefoxCom.request("updateFindControlState", data); } updateFindMatchesCount(data) { FirefoxCom.request("updateFindMatchesCount", data); } initPassiveLoading() { let pdfDataRangeTransport; window.addEventListener("message", function windowMessage(e) { if (e.source !== null) { console.warn("Rejected untrusted message from " + e.origin); return; } const args = e.data; if (typeof args !== "object" || !("pdfjsLoadAction" in args)) { return; } switch (args.pdfjsLoadAction) { case "supportsRangedLoading": if (args.done && !args.data) { viewerApp._documentError(null); break; } pdfDataRangeTransport = new FirefoxComDataRangeTransport(args.length, args.data, args.done, args.filename); viewerApp.open({ range: pdfDataRangeTransport }); break; case "range": pdfDataRangeTransport.onDataRange(args.begin, args.chunk); break; case "rangeProgress": pdfDataRangeTransport.onDataProgress(args.loaded); break; case "progressiveRead": pdfDataRangeTransport.onDataProgressiveRead(args.chunk); pdfDataRangeTransport.onDataProgress(args.loaded, args.total); break; case "progressiveDone": pdfDataRangeTransport?.onDataProgressiveDone(); break; case "progress": viewerApp.progress(args.loaded / args.total); break; case "complete": if (!args.data) { viewerApp._documentError(null, { message: args.errorCode }); break; } viewerApp.open({ data: args.data, filename: args.filename }); break; } }); FirefoxCom.request("initPassiveLoading", null); } reportTelemetry(data) { FirefoxCom.request("reportTelemetry", data); } updateEditorStates(data) { FirefoxCom.request("updateEditorStates", data); } async createL10n() { await document.l10n.ready; return new L10n(AppOptions.get("localeProperties"), document.l10n); } createScripting() { return FirefoxScripting; } createSignatureStorage(eventBus, signal) { return new SignatureStorage(eventBus, signal); } dispatchGlobalEvent(event) { FirefoxCom.request("dispatchGlobalEvent", event); } } ;// ./web/stubs-geckoview.js const AltTextManager = null; const AnnotationEditorParams = null; const ImageAltTextSettings = null; const NewAltTextManager = null; const PDFAttachmentViewer = null; const PDFCursorTools = null; const PDFDocumentProperties = null; const PDFFindBar = null; const PDFLayerViewer = null; const PDFOutlineViewer = null; const PDFPresentationMode = null; const PDFSidebar = null; const PDFThumbnailViewer = null; const SecondaryToolbar = null; const SignatureManager = null; ;// ./web/caret_browsing.js const PRECISION = 1e-1; class CaretBrowsingMode { #mainContainer; #toolBarHeight = 0; #viewerContainer; constructor(abortSignal, mainContainer, viewerContainer, toolbarContainer) { this.#mainContainer = mainContainer; this.#viewerContainer = viewerContainer; if (!toolbarContainer) { return; } this.#toolBarHeight = toolbarContainer.getBoundingClientRect().height; const toolbarObserver = new ResizeObserver(entries => { for (const entry of entries) { if (entry.target === toolbarContainer) { this.#toolBarHeight = Math.floor(entry.borderBoxSize[0].blockSize); break; } } }); toolbarObserver.observe(toolbarContainer); abortSignal.addEventListener("abort", () => toolbarObserver.disconnect(), { once: true }); } #isOnSameLine(rect1, rect2) { const top1 = rect1.y; const bot1 = rect1.bottom; const mid1 = rect1.y + rect1.height / 2; const top2 = rect2.y; const bot2 = rect2.bottom; const mid2 = rect2.y + rect2.height / 2; return top1 <= mid2 && mid2 <= bot1 || top2 <= mid1 && mid1 <= bot2; } #isUnderOver(rect, x, y, isUp) { const midY = rect.y + rect.height / 2; return (isUp ? y >= midY : y <= midY) && rect.x - PRECISION <= x && x <= rect.right + PRECISION; } #isVisible(rect) { return rect.top >= this.#toolBarHeight && rect.left >= 0 && rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) && rect.right <= (window.innerWidth || document.documentElement.clientWidth); } #getCaretPosition(selection, isUp) { const { focusNode, focusOffset } = selection; const range = document.createRange(); range.setStart(focusNode, focusOffset); range.setEnd(focusNode, focusOffset); const rect = range.getBoundingClientRect(); return [rect.x, isUp ? rect.top : rect.bottom]; } static #caretPositionFromPoint(x, y) { return document.caretPositionFromPoint(x, y); } #setCaretPositionHelper(selection, caretX, select, element, rect) { rect ||= element.getBoundingClientRect(); if (caretX <= rect.x + PRECISION) { if (select) { selection.extend(element.firstChild, 0); } else { selection.setPosition(element.firstChild, 0); } return; } if (rect.right - PRECISION <= caretX) { const { lastChild } = element; if (select) { selection.extend(lastChild, lastChild.length); } else { selection.setPosition(lastChild, lastChild.length); } return; } const midY = rect.y + rect.height / 2; let caretPosition = CaretBrowsingMode.#caretPositionFromPoint(caretX, midY); let parentElement = caretPosition.offsetNode?.parentElement; if (parentElement && parentElement !== element) { const elementsAtPoint = document.elementsFromPoint(caretX, midY); const savedVisibilities = []; for (const el of elementsAtPoint) { if (el === element) { break; } const { style } = el; savedVisibilities.push([el, style.visibility]); style.visibility = "hidden"; } caretPosition = CaretBrowsingMode.#caretPositionFromPoint(caretX, midY); parentElement = caretPosition.offsetNode?.parentElement; for (const [el, visibility] of savedVisibilities) { el.style.visibility = visibility; } } if (parentElement !== element) { if (select) { selection.extend(element.firstChild, 0); } else { selection.setPosition(element.firstChild, 0); } return; } if (select) { selection.extend(caretPosition.offsetNode, caretPosition.offset); } else { selection.setPosition(caretPosition.offsetNode, caretPosition.offset); } } #setCaretPosition(select, selection, newLineElement, newLineElementRect, caretX) { if (this.#isVisible(newLineElementRect)) { this.#setCaretPositionHelper(selection, caretX, select, newLineElement, newLineElementRect); return; } this.#mainContainer.addEventListener("scrollend", this.#setCaretPositionHelper.bind(this, selection, caretX, select, newLineElement, null), { once: true }); newLineElement.scrollIntoView(); } #getNodeOnNextPage(textLayer, isUp) { while (true) { const page = textLayer.closest(".page"); const pageNumber = parseInt(page.getAttribute("data-page-number")); const nextPage = isUp ? pageNumber - 1 : pageNumber + 1; textLayer = this.#viewerContainer.querySelector(`.page[data-page-number="${nextPage}"] .textLayer`); if (!textLayer) { return null; } const walker = document.createTreeWalker(textLayer, NodeFilter.SHOW_TEXT); const node = isUp ? walker.lastChild() : walker.firstChild(); if (node) { return node; } } } moveCaret(isUp, select) { const selection = document.getSelection(); if (selection.rangeCount === 0) { return; } const { focusNode } = selection; const focusElement = focusNode.nodeType !== Node.ELEMENT_NODE ? focusNode.parentElement : focusNode; const root = focusElement.closest(".textLayer"); if (!root) { return; } const walker = document.createTreeWalker(root, NodeFilter.SHOW_TEXT); walker.currentNode = focusNode; const focusRect = focusElement.getBoundingClientRect(); let newLineElement = null; const nodeIterator = (isUp ? walker.previousSibling : walker.nextSibling).bind(walker); while (nodeIterator()) { const element = walker.currentNode.parentElement; if (!this.#isOnSameLine(focusRect, element.getBoundingClientRect())) { newLineElement = element; break; } } if (!newLineElement) { const node = this.#getNodeOnNextPage(root, isUp); if (!node) { return; } if (select) { const lastNode = (isUp ? walker.firstChild() : walker.lastChild()) || focusNode; selection.extend(lastNode, isUp ? 0 : lastNode.length); const range = document.createRange(); range.setStart(node, isUp ? node.length : 0); range.setEnd(node, isUp ? node.length : 0); selection.addRange(range); return; } const [caretX] = this.#getCaretPosition(selection, isUp); const { parentElement } = node; this.#setCaretPosition(select, selection, parentElement, parentElement.getBoundingClientRect(), caretX); return; } const [caretX, caretY] = this.#getCaretPosition(selection, isUp); const newLineElementRect = newLineElement.getBoundingClientRect(); if (this.#isUnderOver(newLineElementRect, caretX, caretY, isUp)) { this.#setCaretPosition(select, selection, newLineElement, newLineElementRect, caretX); return; } while (nodeIterator()) { const element = walker.currentNode.parentElement; const elementRect = element.getBoundingClientRect(); if (!this.#isOnSameLine(newLineElementRect, elementRect)) { break; } if (this.#isUnderOver(elementRect, caretX, caretY, isUp)) { this.#setCaretPosition(select, selection, element, elementRect, caretX); return; } } this.#setCaretPosition(select, selection, newLineElement, newLineElementRect, caretX); } } ;// ./web/editor_undo_bar.js class EditorUndoBar { #closeButton = null; #container; #eventBus = null; #focusTimeout = null; #initController = null; isOpen = false; #message; #showController = null; #undoButton; static #l10nMessages = Object.freeze({ highlight: "pdfjs-editor-undo-bar-message-highlight", freetext: "pdfjs-editor-undo-bar-message-freetext", stamp: "pdfjs-editor-undo-bar-message-stamp", ink: "pdfjs-editor-undo-bar-message-ink", signature: "pdfjs-editor-undo-bar-message-signature", _multiple: "pdfjs-editor-undo-bar-message-multiple" }); constructor({ container, message, undoButton, closeButton }, eventBus) { this.#container = container; this.#message = message; this.#undoButton = undoButton; this.#closeButton = closeButton; this.#eventBus = eventBus; } destroy() { this.#initController?.abort(); this.#initController = null; this.hide(); } show(undoAction, messageData) { if (!this.#initController) { this.#initController = new AbortController(); const opts = { signal: this.#initController.signal }; const boundHide = this.hide.bind(this); this.#container.addEventListener("contextmenu", noContextMenu, opts); this.#closeButton.addEventListener("click", boundHide, opts); this.#eventBus._on("beforeprint", boundHide, opts); this.#eventBus._on("download", boundHide, opts); } this.hide(); if (typeof messageData === "string") { this.#message.setAttribute("data-l10n-id", EditorUndoBar.#l10nMessages[messageData]); } else { this.#message.setAttribute("data-l10n-id", EditorUndoBar.#l10nMessages._multiple); this.#message.setAttribute("data-l10n-args", JSON.stringify({ count: messageData })); } this.isOpen = true; this.#container.hidden = false; this.#showController = new AbortController(); this.#undoButton.addEventListener("click", () => { undoAction(); this.hide(); }, { signal: this.#showController.signal }); this.#focusTimeout = setTimeout(() => { this.#container.focus(); this.#focusTimeout = null; }, 100); } hide() { if (!this.isOpen) { return; } this.isOpen = false; this.#container.hidden = true; this.#showController?.abort(); this.#showController = null; if (this.#focusTimeout) { clearTimeout(this.#focusTimeout); this.#focusTimeout = null; } } } ;// ./web/overlay_manager.js class OverlayManager { #overlays = new WeakMap(); #active = null; get active() { return this.#active; } async register(dialog, canForceClose = false) { if (typeof dialog !== "object") { throw new Error("Not enough parameters."); } else if (this.#overlays.has(dialog)) { throw new Error("The overlay is already registered."); } this.#overlays.set(dialog, { canForceClose }); dialog.addEventListener("cancel", ({ target }) => { if (this.#active === target) { this.#active = null; } }); } async open(dialog) { if (!this.#overlays.has(dialog)) { throw new Error("The overlay does not exist."); } else if (this.#active) { if (this.#active === dialog) { throw new Error("The overlay is already active."); } else if (this.#overlays.get(dialog).canForceClose) { await this.close(); } else { throw new Error("Another overlay is currently active."); } } this.#active = dialog; dialog.showModal(); } async close(dialog = this.#active) { if (!this.#overlays.has(dialog)) { throw new Error("The overlay does not exist."); } else if (!this.#active) { throw new Error("The overlay is currently not active."); } else if (this.#active !== dialog) { throw new Error("Another overlay is currently active."); } dialog.close(); this.#active = null; } async closeIfActive(dialog) { if (this.#active === dialog) { await this.close(dialog); } } } ;// ./web/password_prompt.js class PasswordPrompt { #activeCapability = null; #updateCallback = null; #reason = null; constructor(options, overlayManager, isViewerEmbedded = false) { this.dialog = options.dialog; this.label = options.label; this.input = options.input; this.submitButton = options.submitButton; this.cancelButton = options.cancelButton; this.overlayManager = overlayManager; this._isViewerEmbedded = isViewerEmbedded; this.submitButton.addEventListener("click", this.#verify.bind(this)); this.cancelButton.addEventListener("click", this.close.bind(this)); this.input.addEventListener("keydown", e => { if (e.keyCode === 13) { this.#verify(); } }); this.overlayManager.register(this.dialog, true); this.dialog.addEventListener("close", this.#cancel.bind(this)); } async open() { await this.#activeCapability?.promise; this.#activeCapability = Promise.withResolvers(); try { await this.overlayManager.open(this.dialog); } catch (ex) { this.#activeCapability.resolve(); throw ex; } const passwordIncorrect = this.#reason === PasswordResponses.INCORRECT_PASSWORD; if (!this._isViewerEmbedded || passwordIncorrect) { this.input.focus(); } this.label.setAttribute("data-l10n-id", passwordIncorrect ? "pdfjs-password-invalid" : "pdfjs-password-label"); } async close() { this.overlayManager.closeIfActive(this.dialog); } #verify() { const password = this.input.value; if (password?.length > 0) { this.#invokeCallback(password); } } #cancel() { this.#invokeCallback(new Error("PasswordPrompt cancelled.")); this.#activeCapability.resolve(); } #invokeCallback(password) { if (!this.#updateCallback) { return; } this.close(); this.input.value = ""; this.#updateCallback(password); this.#updateCallback = null; } async setUpdateCallback(updateCallback, reason) { if (this.#activeCapability) { await this.#activeCapability.promise; } this.#updateCallback = updateCallback; this.#reason = reason; } } ;// ./web/pdf_find_utils.js const CharacterType = { SPACE: 0, ALPHA_LETTER: 1, PUNCT: 2, HAN_LETTER: 3, KATAKANA_LETTER: 4, HIRAGANA_LETTER: 5, HALFWIDTH_KATAKANA_LETTER: 6, THAI_LETTER: 7 }; function isAlphabeticalScript(charCode) { return charCode < 0x2e80; } function isAscii(charCode) { return (charCode & 0xff80) === 0; } function isAsciiAlpha(charCode) { return charCode >= 0x61 && charCode <= 0x7a || charCode >= 0x41 && charCode <= 0x5a; } function isAsciiDigit(charCode) { return charCode >= 0x30 && charCode <= 0x39; } function isAsciiSpace(charCode) { return charCode === 0x20 || charCode === 0x09 || charCode === 0x0d || charCode === 0x0a; } function isHan(charCode) { return charCode >= 0x3400 && charCode <= 0x9fff || charCode >= 0xf900 && charCode <= 0xfaff; } function isKatakana(charCode) { return charCode >= 0x30a0 && charCode <= 0x30ff; } function isHiragana(charCode) { return charCode >= 0x3040 && charCode <= 0x309f; } function isHalfwidthKatakana(charCode) { return charCode >= 0xff60 && charCode <= 0xff9f; } function isThai(charCode) { return (charCode & 0xff80) === 0x0e00; } function getCharacterType(charCode) { if (isAlphabeticalScript(charCode)) { if (isAscii(charCode)) { if (isAsciiSpace(charCode)) { return CharacterType.SPACE; } else if (isAsciiAlpha(charCode) || isAsciiDigit(charCode) || charCode === 0x5f) { return CharacterType.ALPHA_LETTER; } return CharacterType.PUNCT; } else if (isThai(charCode)) { return CharacterType.THAI_LETTER; } else if (charCode === 0xa0) { return CharacterType.SPACE; } return CharacterType.ALPHA_LETTER; } if (isHan(charCode)) { return CharacterType.HAN_LETTER; } else if (isKatakana(charCode)) { return CharacterType.KATAKANA_LETTER; } else if (isHiragana(charCode)) { return CharacterType.HIRAGANA_LETTER; } else if (isHalfwidthKatakana(charCode)) { return CharacterType.HALFWIDTH_KATAKANA_LETTER; } return CharacterType.ALPHA_LETTER; } let NormalizeWithNFKC; function getNormalizeWithNFKC() { NormalizeWithNFKC ||= ` ¨ª¯²-µ¸-º¼-¾IJ-ijĿ-ŀʼnſDŽ-njDZ-dzʰ-ʸ˘-˝ˠ-ˤʹͺ;΄-΅·ϐ-ϖϰ-ϲϴ-ϵϹևٵ-ٸक़-य़ড়-ঢ়য়ਲ਼ਸ਼ਖ਼-ਜ਼ਫ਼ଡ଼-ଢ଼ำຳໜ-ໝ༌གྷཌྷདྷབྷཛྷཀྵჼᴬ-ᴮᴰ-ᴺᴼ-ᵍᵏ-ᵪᵸᶛ-ᶿẚ-ẛάέήίόύώΆ᾽-῁ΈΉ῍-῏ΐΊ῝-῟ΰΎ῭-`ΌΏ´-῾ - ‑‗․-… ″-‴‶-‷‼‾⁇-⁉⁗ ⁰-ⁱ⁴-₎ₐ-ₜ₨℀-℃℅-ℇ℉-ℓℕ-№ℙ-ℝ℠-™ℤΩℨK-ℭℯ-ℱℳ-ℹ℻-⅀ⅅ-ⅉ⅐-ⅿ↉∬-∭∯-∰〈-〉①-⓪⨌⩴-⩶⫝̸ⱼ-ⱽⵯ⺟⻳⼀-⿕ 〶〸-〺゛-゜ゟヿㄱ-ㆎ㆒-㆟㈀-㈞㈠-㉇㉐-㉾㊀-㏿ꚜ-ꚝꝰꟲ-ꟴꟸ-ꟹꭜ-ꭟꭩ豈-嗀塚晴凞-羽蘒諸逸-都飯-舘並-龎ff-stﬓ-ﬗיִײַ-זּטּ-לּמּנּ-סּףּ-פּצּ-ﮱﯓ-ﴽﵐ-ﶏﶒ-ﷇﷰ-﷼︐-︙︰-﹄﹇-﹒﹔-﹦﹨-﹫ﹰ-ﹲﹴﹶ-ﻼ!-하-ᅦᅧ-ᅬᅭ-ᅲᅳ-ᅵ¢-₩`; return NormalizeWithNFKC; } ;// ./web/pdf_find_controller.js const FindState = { FOUND: 0, NOT_FOUND: 1, WRAPPED: 2, PENDING: 3 }; const FIND_TIMEOUT = 250; const MATCH_SCROLL_OFFSET_TOP = -50; const MATCH_SCROLL_OFFSET_LEFT = -400; const CHARACTERS_TO_NORMALIZE = { "\u2010": "-", "\u2018": "'", "\u2019": "'", "\u201A": "'", "\u201B": "'", "\u201C": '"', "\u201D": '"', "\u201E": '"', "\u201F": '"', "\u00BC": "1/4", "\u00BD": "1/2", "\u00BE": "3/4" }; const DIACRITICS_EXCEPTION = new Set([0x3099, 0x309a, 0x094d, 0x09cd, 0x0a4d, 0x0acd, 0x0b4d, 0x0bcd, 0x0c4d, 0x0ccd, 0x0d3b, 0x0d3c, 0x0d4d, 0x0dca, 0x0e3a, 0x0eba, 0x0f84, 0x1039, 0x103a, 0x1714, 0x1734, 0x17d2, 0x1a60, 0x1b44, 0x1baa, 0x1bab, 0x1bf2, 0x1bf3, 0x2d7f, 0xa806, 0xa82c, 0xa8c4, 0xa953, 0xa9c0, 0xaaf6, 0xabed, 0x0c56, 0x0f71, 0x0f72, 0x0f7a, 0x0f7b, 0x0f7c, 0x0f7d, 0x0f80, 0x0f74]); let DIACRITICS_EXCEPTION_STR; const DIACRITICS_REG_EXP = /\p{M}+/gu; const SPECIAL_CHARS_REG_EXP = /([.*+?^${}()|[\]\\])|(\p{P})|(\s+)|(\p{M})|(\p{L})/gu; const NOT_DIACRITIC_FROM_END_REG_EXP = /([^\p{M}])\p{M}*$/u; const NOT_DIACRITIC_FROM_START_REG_EXP = /^\p{M}*([^\p{M}])/u; const SYLLABLES_REG_EXP = /[\uAC00-\uD7AF\uFA6C\uFACF-\uFAD1\uFAD5-\uFAD7]+/g; const SYLLABLES_LENGTHS = new Map(); const FIRST_CHAR_SYLLABLES_REG_EXP = "[\\u1100-\\u1112\\ud7a4-\\ud7af\\ud84a\\ud84c\\ud850\\ud854\\ud857\\ud85f]"; const NFKC_CHARS_TO_NORMALIZE = new Map(); let noSyllablesRegExp = null; let withSyllablesRegExp = null; function normalize(text) { const syllablePositions = []; let m; while ((m = SYLLABLES_REG_EXP.exec(text)) !== null) { let { index } = m; for (const char of m[0]) { let len = SYLLABLES_LENGTHS.get(char); if (!len) { len = char.normalize("NFD").length; SYLLABLES_LENGTHS.set(char, len); } syllablePositions.push([len, index++]); } } const hasSyllables = syllablePositions.length > 0; let normalizationRegex; if (!hasSyllables && noSyllablesRegExp) { normalizationRegex = noSyllablesRegExp; } else if (hasSyllables && withSyllablesRegExp) { normalizationRegex = withSyllablesRegExp; } else { const replace = Object.keys(CHARACTERS_TO_NORMALIZE).join(""); const toNormalizeWithNFKC = getNormalizeWithNFKC(); const CJK = "(?:\\p{Ideographic}|[\u3040-\u30FF])"; const HKDiacritics = "(?:\u3099|\u309A)"; const BrokenWord = `\\p{Ll}-\\n(?=\\p{Ll})|\\p{Lu}-\\n(?=\\p{L})`; const regexps = [`[${replace}]`, `[${toNormalizeWithNFKC}]`, `${HKDiacritics}\\n`, "\\p{M}+(?:-\\n)?", `${BrokenWord}`, "\\S-\\n", `${CJK}\\n`, "\\n", hasSyllables ? FIRST_CHAR_SYLLABLES_REG_EXP : "\\u0000"]; normalizationRegex = new RegExp(regexps.map(r => `(${r})`).join("|"), "gum"); if (hasSyllables) { withSyllablesRegExp = normalizationRegex; } else { noSyllablesRegExp = normalizationRegex; } } const rawDiacriticsPositions = []; while ((m = DIACRITICS_REG_EXP.exec(text)) !== null) { rawDiacriticsPositions.push([m[0].length, m.index]); } let normalized = text.normalize("NFD"); const positions = [0, 0]; let rawDiacriticsIndex = 0; let syllableIndex = 0; let shift = 0; let shiftOrigin = 0; let eol = 0; let hasDiacritics = false; normalized = normalized.replace(normalizationRegex, (match, p1, p2, p3, p4, p5, p6, p7, p8, p9, i) => { i -= shiftOrigin; if (p1) { const replacement = CHARACTERS_TO_NORMALIZE[p1]; const jj = replacement.length; for (let j = 1; j < jj; j++) { positions.push(i - shift + j, shift - j); } shift -= jj - 1; return replacement; } if (p2) { let replacement = NFKC_CHARS_TO_NORMALIZE.get(p2); if (!replacement) { replacement = p2.normalize("NFKC"); NFKC_CHARS_TO_NORMALIZE.set(p2, replacement); } const jj = replacement.length; for (let j = 1; j < jj; j++) { positions.push(i - shift + j, shift - j); } shift -= jj - 1; return replacement; } if (p3) { hasDiacritics = true; if (i + eol === rawDiacriticsPositions[rawDiacriticsIndex]?.[1]) { ++rawDiacriticsIndex; } else { positions.push(i - 1 - shift + 1, shift - 1); shift -= 1; shiftOrigin += 1; } positions.push(i - shift + 1, shift); shiftOrigin += 1; eol += 1; return p3.charAt(0); } if (p4) { const hasTrailingDashEOL = p4.endsWith("\n"); const len = hasTrailingDashEOL ? p4.length - 2 : p4.length; hasDiacritics = true; let jj = len; if (i + eol === rawDiacriticsPositions[rawDiacriticsIndex]?.[1]) { jj -= rawDiacriticsPositions[rawDiacriticsIndex][0]; ++rawDiacriticsIndex; } for (let j = 1; j <= jj; j++) { positions.push(i - 1 - shift + j, shift - j); } shift -= jj; shiftOrigin += jj; if (hasTrailingDashEOL) { i += len - 1; positions.push(i - shift + 1, 1 + shift); shift += 1; shiftOrigin += 1; eol += 1; return p4.slice(0, len); } return p4; } if (p5) { const len = p5.length - 2; positions.push(i - shift + len, 1 + shift); shift += 1; shiftOrigin += 1; eol += 1; return p5.slice(0, -2); } if (p6) { shiftOrigin += 1; eol += 1; return p6.slice(0, -1); } if (p7) { const len = p7.length - 1; positions.push(i - shift + len, shift); shiftOrigin += 1; eol += 1; return p7.slice(0, -1); } if (p8) { positions.push(i - shift + 1, shift - 1); shift -= 1; shiftOrigin += 1; eol += 1; return " "; } if (i + eol === syllablePositions[syllableIndex]?.[1]) { const newCharLen = syllablePositions[syllableIndex][0] - 1; ++syllableIndex; for (let j = 1; j <= newCharLen; j++) { positions.push(i - (shift - j), shift - j); } shift -= newCharLen; shiftOrigin += newCharLen; } return p9; }); positions.push(normalized.length, shift); const starts = new Uint32Array(positions.length >> 1); const shifts = new Int32Array(positions.length >> 1); for (let i = 0, ii = positions.length; i < ii; i += 2) { starts[i >> 1] = positions[i]; shifts[i >> 1] = positions[i + 1]; } return [normalized, [starts, shifts], hasDiacritics]; } function getOriginalIndex(diffs, pos, len) { if (!diffs) { return [pos, len]; } const [starts, shifts] = diffs; const start = pos; const end = pos + len - 1; let i = binarySearchFirstItem(starts, x => x >= start); if (starts[i] > start) { --i; } let j = binarySearchFirstItem(starts, x => x >= end, i); if (starts[j] > end) { --j; } const oldStart = start + shifts[i]; const oldEnd = end + shifts[j]; const oldLen = oldEnd + 1 - oldStart; return [oldStart, oldLen]; } class PDFFindController { #state = null; #updateMatchesCountOnProgress = true; #visitedPagesCount = 0; constructor({ linkService, eventBus, updateMatchesCountOnProgress = true }) { this._linkService = linkService; this._eventBus = eventBus; this.#updateMatchesCountOnProgress = updateMatchesCountOnProgress; this.onIsPageVisible = null; this.#reset(); eventBus._on("find", this.#onFind.bind(this)); eventBus._on("findbarclose", this.#onFindBarClose.bind(this)); } get highlightMatches() { return this._highlightMatches; } get pageMatches() { return this._pageMatches; } get pageMatchesLength() { return this._pageMatchesLength; } get selected() { return this._selected; } get state() { return this.#state; } setDocument(pdfDocument) { if (this._pdfDocument) { this.#reset(); } if (!pdfDocument) { return; } this._pdfDocument = pdfDocument; this._firstPageCapability.resolve(); } #onFind(state) { if (!state) { return; } const pdfDocument = this._pdfDocument; const { type } = state; if (this.#state === null || this.#shouldDirtyMatch(state)) { this._dirtyMatch = true; } this.#state = state; if (type !== "highlightallchange") { this.#updateUIState(FindState.PENDING); } this._firstPageCapability.promise.then(() => { if (!this._pdfDocument || pdfDocument && this._pdfDocument !== pdfDocument) { return; } this.#extractText(); const findbarClosed = !this._highlightMatches; const pendingTimeout = !!this._findTimeout; if (this._findTimeout) { clearTimeout(this._findTimeout); this._findTimeout = null; } if (!type) { this._findTimeout = setTimeout(() => { this.#nextMatch(); this._findTimeout = null; }, FIND_TIMEOUT); } else if (this._dirtyMatch) { this.#nextMatch(); } else if (type === "again") { this.#nextMatch(); if (findbarClosed && this.#state.highlightAll) { this.#updateAllPages(); } } else if (type === "highlightallchange") { if (pendingTimeout) { this.#nextMatch(); } else { this._highlightMatches = true; } this.#updateAllPages(); } else { this.#nextMatch(); } }); } scrollMatchIntoView({ element = null, selectedLeft = 0, pageIndex = -1, matchIndex = -1 }) { if (!this._scrollMatches || !element) { return; } else if (matchIndex === -1 || matchIndex !== this._selected.matchIdx) { return; } else if (pageIndex === -1 || pageIndex !== this._selected.pageIdx) { return; } this._scrollMatches = false; const spot = { top: MATCH_SCROLL_OFFSET_TOP, left: selectedLeft + MATCH_SCROLL_OFFSET_LEFT }; scrollIntoView(element, spot, true); } #reset() { this._highlightMatches = false; this._scrollMatches = false; this._pdfDocument = null; this._pageMatches = []; this._pageMatchesLength = []; this.#visitedPagesCount = 0; this.#state = null; this._selected = { pageIdx: -1, matchIdx: -1 }; this._offset = { pageIdx: null, matchIdx: null, wrapped: false }; this._extractTextPromises = []; this._pageContents = []; this._pageDiffs = []; this._hasDiacritics = []; this._matchesCountTotal = 0; this._pagesToSearch = null; this._pendingFindMatches = new Set(); this._resumePageIdx = null; this._dirtyMatch = false; clearTimeout(this._findTimeout); this._findTimeout = null; this._firstPageCapability = Promise.withResolvers(); } get #query() { const { query } = this.#state; if (typeof query === "string") { if (query !== this._rawQuery) { this._rawQuery = query; [this._normalizedQuery] = normalize(query); } return this._normalizedQuery; } return (query || []).filter(q => !!q).map(q => normalize(q)[0]); } #shouldDirtyMatch(state) { const newQuery = state.query, prevQuery = this.#state.query; const newType = typeof newQuery, prevType = typeof prevQuery; if (newType !== prevType) { return true; } if (newType === "string") { if (newQuery !== prevQuery) { return true; } } else if (JSON.stringify(newQuery) !== JSON.stringify(prevQuery)) { return true; } switch (state.type) { case "again": const pageNumber = this._selected.pageIdx + 1; const linkService = this._linkService; return pageNumber >= 1 && pageNumber <= linkService.pagesCount && pageNumber !== linkService.page && !(this.onIsPageVisible?.(pageNumber) ?? true); case "highlightallchange": return false; } return true; } #isEntireWord(content, startIdx, length) { let match = content.slice(0, startIdx).match(NOT_DIACRITIC_FROM_END_REG_EXP); if (match) { const first = content.charCodeAt(startIdx); const limit = match[1].charCodeAt(0); if (getCharacterType(first) === getCharacterType(limit)) { return false; } } match = content.slice(startIdx + length).match(NOT_DIACRITIC_FROM_START_REG_EXP); if (match) { const last = content.charCodeAt(startIdx + length - 1); const limit = match[1].charCodeAt(0); if (getCharacterType(last) === getCharacterType(limit)) { return false; } } return true; } #convertToRegExpString(query, hasDiacritics) { const { matchDiacritics } = this.#state; let isUnicode = false; query = query.replaceAll(SPECIAL_CHARS_REG_EXP, (match, p1, p2, p3, p4, p5) => { if (p1) { return `[ ]*\\${p1}[ ]*`; } if (p2) { return `[ ]*${p2}[ ]*`; } if (p3) { return "[ ]+"; } if (matchDiacritics) { return p4 || p5; } if (p4) { return DIACRITICS_EXCEPTION.has(p4.charCodeAt(0)) ? p4 : ""; } if (hasDiacritics) { isUnicode = true; return `${p5}\\p{M}*`; } return p5; }); const trailingSpaces = "[ ]*"; if (query.endsWith(trailingSpaces)) { query = query.slice(0, query.length - trailingSpaces.length); } if (matchDiacritics) { if (hasDiacritics) { DIACRITICS_EXCEPTION_STR ||= String.fromCharCode(...DIACRITICS_EXCEPTION); isUnicode = true; query = `${query}(?=[${DIACRITICS_EXCEPTION_STR}]|[^\\p{M}]|$)`; } } return [isUnicode, query]; } #calculateMatch(pageIndex) { if (!this.#state) { return; } const query = this.#query; if (query.length === 0) { return; } const pageContent = this._pageContents[pageIndex]; const matcherResult = this.match(query, pageContent, pageIndex); const matches = this._pageMatches[pageIndex] = []; const matchesLength = this._pageMatchesLength[pageIndex] = []; const diffs = this._pageDiffs[pageIndex]; matcherResult?.forEach(({ index, length }) => { const [matchPos, matchLen] = getOriginalIndex(diffs, index, length); if (matchLen) { matches.push(matchPos); matchesLength.push(matchLen); } }); if (this.#state.highlightAll) { this.#updatePage(pageIndex); } if (this._resumePageIdx === pageIndex) { this._resumePageIdx = null; this.#nextPageMatch(); } const pageMatchesCount = matches.length; this._matchesCountTotal += pageMatchesCount; if (this.#updateMatchesCountOnProgress) { if (pageMatchesCount > 0) { this.#updateUIResultsCount(); } } else if (++this.#visitedPagesCount === this._linkService.pagesCount) { this.#updateUIResultsCount(); } } match(query, pageContent, pageIndex) { const hasDiacritics = this._hasDiacritics[pageIndex]; let isUnicode = false; if (typeof query === "string") { [isUnicode, query] = this.#convertToRegExpString(query, hasDiacritics); } else { query = query.sort().reverse().map(q => { const [isUnicodePart, queryPart] = this.#convertToRegExpString(q, hasDiacritics); isUnicode ||= isUnicodePart; return `(${queryPart})`; }).join("|"); } if (!query) { return undefined; } const { caseSensitive, entireWord } = this.#state; const flags = `g${isUnicode ? "u" : ""}${caseSensitive ? "" : "i"}`; query = new RegExp(query, flags); const matches = []; let match; while ((match = query.exec(pageContent)) !== null) { if (entireWord && !this.#isEntireWord(pageContent, match.index, match[0].length)) { continue; } matches.push({ index: match.index, length: match[0].length }); } return matches; } #extractText() { if (this._extractTextPromises.length > 0) { return; } let deferred = Promise.resolve(); const textOptions = { disableNormalization: true }; const pdfDoc = this._pdfDocument; for (let i = 0, ii = this._linkService.pagesCount; i < ii; i++) { const { promise, resolve } = Promise.withResolvers(); this._extractTextPromises[i] = promise; deferred = deferred.then(async () => { if (pdfDoc !== this._pdfDocument) { resolve(); return; } await pdfDoc.getPage(i + 1).then(pdfPage => pdfPage.getTextContent(textOptions)).then(textContent => { const strBuf = []; for (const textItem of textContent.items) { strBuf.push(textItem.str); if (textItem.hasEOL) { strBuf.push("\n"); } } [this._pageContents[i], this._pageDiffs[i], this._hasDiacritics[i]] = normalize(strBuf.join("")); resolve(); }, reason => { console.error(`Unable to get text content for page ${i + 1}`, reason); this._pageContents[i] = ""; this._pageDiffs[i] = null; this._hasDiacritics[i] = false; resolve(); }); }); } } #updatePage(index) { if (this._scrollMatches && this._selected.pageIdx === index) { this._linkService.page = index + 1; } this._eventBus.dispatch("updatetextlayermatches", { source: this, pageIndex: index }); } #updateAllPages() { this._eventBus.dispatch("updatetextlayermatches", { source: this, pageIndex: -1 }); } #nextMatch() { const previous = this.#state.findPrevious; const currentPageIndex = this._linkService.page - 1; const numPages = this._linkService.pagesCount; this._highlightMatches = true; if (this._dirtyMatch) { this._dirtyMatch = false; this._selected.pageIdx = this._selected.matchIdx = -1; this._offset.pageIdx = currentPageIndex; this._offset.matchIdx = null; this._offset.wrapped = false; this._resumePageIdx = null; this._pageMatches.length = 0; this._pageMatchesLength.length = 0; this.#visitedPagesCount = 0; this._matchesCountTotal = 0; this.#updateAllPages(); for (let i = 0; i < numPages; i++) { if (this._pendingFindMatches.has(i)) { continue; } this._pendingFindMatches.add(i); this._extractTextPromises[i].then(() => { this._pendingFindMatches.delete(i); this.#calculateMatch(i); }); } } const query = this.#query; if (query.length === 0) { this.#updateUIState(FindState.FOUND); return; } if (this._resumePageIdx) { return; } const offset = this._offset; this._pagesToSearch = numPages; if (offset.matchIdx !== null) { const numPageMatches = this._pageMatches[offset.pageIdx].length; if (!previous && offset.matchIdx + 1 < numPageMatches || previous && offset.matchIdx > 0) { offset.matchIdx = previous ? offset.matchIdx - 1 : offset.matchIdx + 1; this.#updateMatch(true); return; } this.#advanceOffsetPage(previous); } this.#nextPageMatch(); } #matchesReady(matches) { const offset = this._offset; const numMatches = matches.length; const previous = this.#state.findPrevious; if (numMatches) { offset.matchIdx = previous ? numMatches - 1 : 0; this.#updateMatch(true); return true; } this.#advanceOffsetPage(previous); if (offset.wrapped) { offset.matchIdx = null; if (this._pagesToSearch < 0) { this.#updateMatch(false); return true; } } return false; } #nextPageMatch() { if (this._resumePageIdx !== null) { console.error("There can only be one pending page."); } let matches = null; do { const pageIdx = this._offset.pageIdx; matches = this._pageMatches[pageIdx]; if (!matches) { this._resumePageIdx = pageIdx; break; } } while (!this.#matchesReady(matches)); } #advanceOffsetPage(previous) { const offset = this._offset; const numPages = this._linkService.pagesCount; offset.pageIdx = previous ? offset.pageIdx - 1 : offset.pageIdx + 1; offset.matchIdx = null; this._pagesToSearch--; if (offset.pageIdx >= numPages || offset.pageIdx < 0) { offset.pageIdx = previous ? numPages - 1 : 0; offset.wrapped = true; } } #updateMatch(found = false) { let state = FindState.NOT_FOUND; const wrapped = this._offset.wrapped; this._offset.wrapped = false; if (found) { const previousPage = this._selected.pageIdx; this._selected.pageIdx = this._offset.pageIdx; this._selected.matchIdx = this._offset.matchIdx; state = wrapped ? FindState.WRAPPED : FindState.FOUND; if (previousPage !== -1 && previousPage !== this._selected.pageIdx) { this.#updatePage(previousPage); } } this.#updateUIState(state, this.#state.findPrevious); if (this._selected.pageIdx !== -1) { this._scrollMatches = true; this.#updatePage(this._selected.pageIdx); } } #onFindBarClose(evt) { const pdfDocument = this._pdfDocument; this._firstPageCapability.promise.then(() => { if (!this._pdfDocument || pdfDocument && this._pdfDocument !== pdfDocument) { return; } if (this._findTimeout) { clearTimeout(this._findTimeout); this._findTimeout = null; } if (this._resumePageIdx) { this._resumePageIdx = null; this._dirtyMatch = true; } this.#updateUIState(FindState.FOUND); this._highlightMatches = false; this.#updateAllPages(); }); } #requestMatchesCount() { const { pageIdx, matchIdx } = this._selected; let current = 0, total = this._matchesCountTotal; if (matchIdx !== -1) { for (let i = 0; i < pageIdx; i++) { current += this._pageMatches[i]?.length || 0; } current += matchIdx + 1; } if (current < 1 || current > total) { current = total = 0; } return { current, total }; } #updateUIResultsCount() { this._eventBus.dispatch("updatefindmatchescount", { source: this, matchesCount: this.#requestMatchesCount() }); } #updateUIState(state, previous = false) { if (!this.#updateMatchesCountOnProgress && (this.#visitedPagesCount !== this._linkService.pagesCount || state === FindState.PENDING)) { return; } this._eventBus.dispatch("updatefindcontrolstate", { source: this, state, previous, entireWord: this.#state?.entireWord ?? null, matchesCount: this.#requestMatchesCount(), rawQuery: this.#state?.query ?? null }); } } ;// ./web/pdf_history.js const HASH_CHANGE_TIMEOUT = 1000; const POSITION_UPDATED_THRESHOLD = 50; const UPDATE_VIEWAREA_TIMEOUT = 1000; function getCurrentHash() { return document.location.hash; } class PDFHistory { #eventAbortController = null; constructor({ linkService, eventBus }) { this.linkService = linkService; this.eventBus = eventBus; this._initialized = false; this._fingerprint = ""; this.reset(); this.eventBus._on("pagesinit", () => { this._isPagesLoaded = false; this.eventBus._on("pagesloaded", evt => { this._isPagesLoaded = !!evt.pagesCount; }, { once: true }); }); } initialize({ fingerprint, resetHistory = false, updateUrl = false }) { if (!fingerprint || typeof fingerprint !== "string") { console.error('PDFHistory.initialize: The "fingerprint" must be a non-empty string.'); return; } if (this._initialized) { this.reset(); } const reInitialized = this._fingerprint !== "" && this._fingerprint !== fingerprint; this._fingerprint = fingerprint; this._updateUrl = updateUrl === true; this._initialized = true; this.#bindEvents(); const state = window.history.state; this._popStateInProgress = false; this._blockHashChange = 0; this._currentHash = getCurrentHash(); this._numPositionUpdates = 0; this._uid = this._maxUid = 0; this._destination = null; this._position = null; if (!this.#isValidState(state, true) || resetHistory) { const { hash, page, rotation } = this.#parseCurrentHash(true); if (!hash || reInitialized || resetHistory) { this.#pushOrReplaceState(null, true); return; } this.#pushOrReplaceState({ hash, page, rotation }, true); return; } const destination = state.destination; this.#updateInternalState(destination, state.uid, true); if (destination.rotation !== undefined) { this._initialRotation = destination.rotation; } if (destination.dest) { this._initialBookmark = JSON.stringify(destination.dest); this._destination.page = null; } else if (destination.hash) { this._initialBookmark = destination.hash; } else if (destination.page) { this._initialBookmark = `page=${destination.page}`; } } reset() { if (this._initialized) { this.#pageHide(); this._initialized = false; this.#unbindEvents(); } if (this._updateViewareaTimeout) { clearTimeout(this._updateViewareaTimeout); this._updateViewareaTimeout = null; } this._initialBookmark = null; this._initialRotation = null; } push({ namedDest = null, explicitDest, pageNumber }) { if (!this._initialized) { return; } if (namedDest && typeof namedDest !== "string") { console.error("PDFHistory.push: " + `"${namedDest}" is not a valid namedDest parameter.`); return; } else if (!Array.isArray(explicitDest)) { console.error("PDFHistory.push: " + `"${explicitDest}" is not a valid explicitDest parameter.`); return; } else if (!this.#isValidPage(pageNumber)) { if (pageNumber !== null || this._destination) { console.error("PDFHistory.push: " + `"${pageNumber}" is not a valid pageNumber parameter.`); return; } } const hash = namedDest || JSON.stringify(explicitDest); if (!hash) { return; } let forceReplace = false; if (this._destination && (isDestHashesEqual(this._destination.hash, hash) || isDestArraysEqual(this._destination.dest, explicitDest))) { if (this._destination.page) { return; } forceReplace = true; } if (this._popStateInProgress && !forceReplace) { return; } this.#pushOrReplaceState({ dest: explicitDest, hash, page: pageNumber, rotation: this.linkService.rotation }, forceReplace); if (!this._popStateInProgress) { this._popStateInProgress = true; Promise.resolve().then(() => { this._popStateInProgress = false; }); } } pushPage(pageNumber) { if (!this._initialized) { return; } if (!this.#isValidPage(pageNumber)) { console.error(`PDFHistory.pushPage: "${pageNumber}" is not a valid page number.`); return; } if (this._destination?.page === pageNumber) { return; } if (this._popStateInProgress) { return; } this.#pushOrReplaceState({ dest: null, hash: `page=${pageNumber}`, page: pageNumber, rotation: this.linkService.rotation }); if (!this._popStateInProgress) { this._popStateInProgress = true; Promise.resolve().then(() => { this._popStateInProgress = false; }); } } pushCurrentPosition() { if (!this._initialized || this._popStateInProgress) { return; } this.#tryPushCurrentPosition(); } back() { if (!this._initialized || this._popStateInProgress) { return; } const state = window.history.state; if (this.#isValidState(state) && state.uid > 0) { window.history.back(); } } forward() { if (!this._initialized || this._popStateInProgress) { return; } const state = window.history.state; if (this.#isValidState(state) && state.uid < this._maxUid) { window.history.forward(); } } get popStateInProgress() { return this._initialized && (this._popStateInProgress || this._blockHashChange > 0); } get initialBookmark() { return this._initialized ? this._initialBookmark : null; } get initialRotation() { return this._initialized ? this._initialRotation : null; } #pushOrReplaceState(destination, forceReplace = false) { const shouldReplace = forceReplace || !this._destination; const newState = { fingerprint: this._fingerprint, uid: shouldReplace ? this._uid : this._uid + 1, destination }; this.#updateInternalState(destination, newState.uid); let newUrl; if (this._updateUrl && destination?.hash) { const { href, protocol } = document.location; if (protocol !== "file:") { newUrl = updateUrlHash(href, destination.hash); } } if (shouldReplace) { window.history.replaceState(newState, "", newUrl); } else { window.history.pushState(newState, "", newUrl); } } #tryPushCurrentPosition(temporary = false) { if (!this._position) { return; } let position = this._position; if (temporary) { position = Object.assign(Object.create(null), this._position); position.temporary = true; } if (!this._destination) { this.#pushOrReplaceState(position); return; } if (this._destination.temporary) { this.#pushOrReplaceState(position, true); return; } if (this._destination.hash === position.hash) { return; } if (!this._destination.page && (POSITION_UPDATED_THRESHOLD <= 0 || this._numPositionUpdates <= POSITION_UPDATED_THRESHOLD)) { return; } let forceReplace = false; if (this._destination.page >= position.first && this._destination.page <= position.page) { if (this._destination.dest !== undefined || !this._destination.first) { return; } forceReplace = true; } this.#pushOrReplaceState(position, forceReplace); } #isValidPage(val) { return Number.isInteger(val) && val > 0 && val <= this.linkService.pagesCount; } #isValidState(state, checkReload = false) { if (!state) { return false; } if (state.fingerprint !== this._fingerprint) { if (checkReload) { if (typeof state.fingerprint !== "string" || state.fingerprint.length !== this._fingerprint.length) { return false; } const [perfEntry] = performance.getEntriesByType("navigation"); if (perfEntry?.type !== "reload") { return false; } } else { return false; } } if (!Number.isInteger(state.uid) || state.uid < 0) { return false; } if (state.destination === null || typeof state.destination !== "object") { return false; } return true; } #updateInternalState(destination, uid, removeTemporary = false) { if (this._updateViewareaTimeout) { clearTimeout(this._updateViewareaTimeout); this._updateViewareaTimeout = null; } if (removeTemporary && destination?.temporary) { delete destination.temporary; } this._destination = destination; this._uid = uid; this._maxUid = Math.max(this._maxUid, uid); this._numPositionUpdates = 0; } #parseCurrentHash(checkNameddest = false) { const hash = unescape(getCurrentHash()).substring(1); const params = parseQueryString(hash); const nameddest = params.get("nameddest") || ""; let page = params.get("page") | 0; if (!this.#isValidPage(page) || checkNameddest && nameddest.length > 0) { page = null; } return { hash, page, rotation: this.linkService.rotation }; } #updateViewarea({ location }) { if (this._updateViewareaTimeout) { clearTimeout(this._updateViewareaTimeout); this._updateViewareaTimeout = null; } this._position = { hash: location.pdfOpenParams.substring(1), page: this.linkService.page, first: location.pageNumber, rotation: location.rotation }; if (this._popStateInProgress) { return; } if (POSITION_UPDATED_THRESHOLD > 0 && this._isPagesLoaded && this._destination && !this._destination.page) { this._numPositionUpdates++; } if (UPDATE_VIEWAREA_TIMEOUT > 0) { this._updateViewareaTimeout = setTimeout(() => { if (!this._popStateInProgress) { this.#tryPushCurrentPosition(true); } this._updateViewareaTimeout = null; }, UPDATE_VIEWAREA_TIMEOUT); } } #popState({ state }) { const newHash = getCurrentHash(), hashChanged = this._currentHash !== newHash; this._currentHash = newHash; if (!state) { this._uid++; const { hash, page, rotation } = this.#parseCurrentHash(); this.#pushOrReplaceState({ hash, page, rotation }, true); return; } if (!this.#isValidState(state)) { return; } this._popStateInProgress = true; if (hashChanged) { this._blockHashChange++; waitOnEventOrTimeout({ target: window, name: "hashchange", delay: HASH_CHANGE_TIMEOUT }).then(() => { this._blockHashChange--; }); } const destination = state.destination; this.#updateInternalState(destination, state.uid, true); if (isValidRotation(destination.rotation)) { this.linkService.rotation = destination.rotation; } if (destination.dest) { this.linkService.goToDestination(destination.dest); } else if (destination.hash) { this.linkService.setHash(destination.hash); } else if (destination.page) { this.linkService.page = destination.page; } Promise.resolve().then(() => { this._popStateInProgress = false; }); } #pageHide() { if (!this._destination || this._destination.temporary) { this.#tryPushCurrentPosition(); } } #bindEvents() { if (this.#eventAbortController) { return; } this.#eventAbortController = new AbortController(); const { signal } = this.#eventAbortController; this.eventBus._on("updateviewarea", this.#updateViewarea.bind(this), { signal }); window.addEventListener("popstate", this.#popState.bind(this), { signal }); window.addEventListener("pagehide", this.#pageHide.bind(this), { signal }); } #unbindEvents() { this.#eventAbortController?.abort(); this.#eventAbortController = null; } } function isDestHashesEqual(destHash, pushHash) { if (typeof destHash !== "string" || typeof pushHash !== "string") { return false; } if (destHash === pushHash) { return true; } const nameddest = parseQueryString(destHash).get("nameddest"); if (nameddest === pushHash) { return true; } return false; } function isDestArraysEqual(firstDest, secondDest) { function isEntryEqual(first, second) { if (typeof first !== typeof second) { return false; } if (Array.isArray(first) || Array.isArray(second)) { return false; } if (first !== null && typeof first === "object" && second !== null) { if (Object.keys(first).length !== Object.keys(second).length) { return false; } for (const key in first) { if (!isEntryEqual(first[key], second[key])) { return false; } } return true; } return first === second || Number.isNaN(first) && Number.isNaN(second); } if (!(Array.isArray(firstDest) && Array.isArray(secondDest))) { return false; } if (firstDest.length !== secondDest.length) { return false; } for (let i = 0, ii = firstDest.length; i < ii; i++) { if (!isEntryEqual(firstDest[i], secondDest[i])) { return false; } } return true; } ;// ./web/xfa_layer_builder.js class XfaLayerBuilder { constructor({ pdfPage, annotationStorage = null, linkService, xfaHtml = null }) { this.pdfPage = pdfPage; this.annotationStorage = annotationStorage; this.linkService = linkService; this.xfaHtml = xfaHtml; this.div = null; this._cancelled = false; } async render({ viewport, intent = "display" }) { if (intent === "print") { const parameters = { viewport: viewport.clone({ dontFlip: true }), div: this.div, xfaHtml: this.xfaHtml, annotationStorage: this.annotationStorage, linkService: this.linkService, intent }; this.div = document.createElement("div"); parameters.div = this.div; return XfaLayer.render(parameters); } const xfaHtml = await this.pdfPage.getXfa(); if (this._cancelled || !xfaHtml) { return { textDivs: [] }; } const parameters = { viewport: viewport.clone({ dontFlip: true }), div: this.div, xfaHtml, annotationStorage: this.annotationStorage, linkService: this.linkService, intent }; if (this.div) { return XfaLayer.update(parameters); } this.div = document.createElement("div"); parameters.div = this.div; return XfaLayer.render(parameters); } cancel() { this._cancelled = true; } hide() { if (!this.div) { return; } this.div.hidden = true; } } ;// ./web/print_utils.js function getXfaHtmlForPrinting(printContainer, pdfDocument) { const xfaHtml = pdfDocument.allXfaHtml; const linkService = new SimpleLinkService(); const scale = Math.round(PixelsPerInch.PDF_TO_CSS_UNITS * 100) / 100; for (const xfaPage of xfaHtml.children) { const page = document.createElement("div"); page.className = "xfaPrintedPage"; printContainer.append(page); const builder = new XfaLayerBuilder({ pdfPage: null, annotationStorage: pdfDocument.annotationStorage, linkService, xfaHtml: xfaPage }); const viewport = getXfaPageViewport(xfaPage, { scale }); builder.render({ viewport, intent: "print" }); page.append(builder.div); } } ;// ./web/firefox_print_service.js function composePage(pdfDocument, pageNumber, size, printContainer, printResolution, optionalContentConfigPromise, printAnnotationStoragePromise) { const canvas = document.createElement("canvas"); const PRINT_UNITS = printResolution / PixelsPerInch.PDF; canvas.width = Math.floor(size.width * PRINT_UNITS); canvas.height = Math.floor(size.height * PRINT_UNITS); const canvasWrapper = document.createElement("div"); canvasWrapper.className = "printedPage"; canvasWrapper.append(canvas); printContainer.append(canvasWrapper); let currentRenderTask = null; canvas.mozPrintCallback = function (obj) { const ctx = obj.context; ctx.save(); ctx.fillStyle = "rgb(255, 255, 255)"; ctx.fillRect(0, 0, canvas.width, canvas.height); ctx.restore(); let thisRenderTask = null; Promise.all([pdfDocument.getPage(pageNumber), printAnnotationStoragePromise]).then(function ([pdfPage, printAnnotationStorage]) { if (currentRenderTask) { currentRenderTask.cancel(); currentRenderTask = null; } const renderContext = { canvasContext: ctx, transform: [PRINT_UNITS, 0, 0, PRINT_UNITS, 0, 0], viewport: pdfPage.getViewport({ scale: 1, rotation: size.rotation }), intent: "print", annotationMode: AnnotationMode.ENABLE_STORAGE, optionalContentConfigPromise, printAnnotationStorage }; currentRenderTask = thisRenderTask = pdfPage.render(renderContext); return thisRenderTask.promise; }).then(function () { if (currentRenderTask === thisRenderTask) { currentRenderTask = null; } obj.done(); }, function (reason) { if (!(reason instanceof RenderingCancelledException)) { console.error(reason); } if (currentRenderTask === thisRenderTask) { currentRenderTask.cancel(); currentRenderTask = null; } if ("abort" in obj) { obj.abort(); } else { obj.done(); } }); }; } class FirefoxPrintService { constructor({ pdfDocument, pagesOverview, printContainer, printResolution, printAnnotationStoragePromise = null }) { this.pdfDocument = pdfDocument; this.pagesOverview = pagesOverview; this.printContainer = printContainer; this._printResolution = printResolution || 150; this._optionalContentConfigPromise = pdfDocument.getOptionalContentConfig({ intent: "print" }); this._printAnnotationStoragePromise = printAnnotationStoragePromise || Promise.resolve(); } layout() { const { pdfDocument, pagesOverview, printContainer, _printResolution, _optionalContentConfigPromise, _printAnnotationStoragePromise } = this; const body = document.querySelector("body"); body.setAttribute("data-pdfjsprinting", true); const { width, height } = this.pagesOverview[0]; const hasEqualPageSizes = this.pagesOverview.every(size => size.width === width && size.height === height); if (!hasEqualPageSizes) { console.warn("Not all pages have the same size. The printed result may be incorrect!"); } this.pageStyleSheet = document.createElement("style"); this.pageStyleSheet.textContent = `@page { size: ${width}pt ${height}pt;}`; body.append(this.pageStyleSheet); if (pdfDocument.isPureXfa) { getXfaHtmlForPrinting(printContainer, pdfDocument); return; } for (let i = 0, ii = pagesOverview.length; i < ii; ++i) { composePage(pdfDocument, i + 1, pagesOverview[i], printContainer, _printResolution, _optionalContentConfigPromise, _printAnnotationStoragePromise); } } destroy() { this.printContainer.textContent = ""; const body = document.querySelector("body"); body.removeAttribute("data-pdfjsprinting"); if (this.pageStyleSheet) { this.pageStyleSheet.remove(); this.pageStyleSheet = null; } } } class PDFPrintServiceFactory { static get supportsPrinting() { const canvas = document.createElement("canvas"); return shadow(this, "supportsPrinting", "mozPrintCallback" in canvas); } static createPrintService(params) { return new FirefoxPrintService(params); } } ;// ./web/pdf_rendering_queue.js const CLEANUP_TIMEOUT = 30000; class PDFRenderingQueue { constructor() { this.pdfViewer = null; this.pdfThumbnailViewer = null; this.onIdle = null; this.highestPriorityPage = null; this.idleTimeout = null; this.printing = false; this.isThumbnailViewEnabled = false; } setViewer(pdfViewer) { this.pdfViewer = pdfViewer; } setThumbnailViewer(pdfThumbnailViewer) { this.pdfThumbnailViewer = pdfThumbnailViewer; } isHighestPriority(view) { return this.highestPriorityPage === view.renderingId; } renderHighestPriority(currentlyVisiblePages) { if (this.idleTimeout) { clearTimeout(this.idleTimeout); this.idleTimeout = null; } if (this.pdfViewer.forceRendering(currentlyVisiblePages)) { return; } if (this.isThumbnailViewEnabled && this.pdfThumbnailViewer?.forceRendering()) { return; } if (this.printing) { return; } if (this.onIdle) { this.idleTimeout = setTimeout(this.onIdle.bind(this), CLEANUP_TIMEOUT); } } getHighestPriority(visible, views, scrolledDown, preRenderExtra = false, ignoreDetailViews = false) { const visibleViews = visible.views, numVisible = visibleViews.length; if (numVisible === 0) { return null; } for (let i = 0; i < numVisible; i++) { const view = visibleViews[i].view; if (!this.isViewFinished(view)) { return view; } } if (!ignoreDetailViews) { for (let i = 0; i < numVisible; i++) { const { detailView } = visibleViews[i].view; if (detailView && !this.isViewFinished(detailView)) { return detailView; } } } const firstId = visible.first.id, lastId = visible.last.id; if (lastId - firstId + 1 > numVisible) { const visibleIds = visible.ids; for (let i = 1, ii = lastId - firstId; i < ii; i++) { const holeId = scrolledDown ? firstId + i : lastId - i; if (visibleIds.has(holeId)) { continue; } const holeView = views[holeId - 1]; if (!this.isViewFinished(holeView)) { return holeView; } } } let preRenderIndex = scrolledDown ? lastId : firstId - 2; let preRenderView = views[preRenderIndex]; if (preRenderView && !this.isViewFinished(preRenderView)) { return preRenderView; } if (preRenderExtra) { preRenderIndex += scrolledDown ? 1 : -1; preRenderView = views[preRenderIndex]; if (preRenderView && !this.isViewFinished(preRenderView)) { return preRenderView; } } return null; } isViewFinished(view) { return view.renderingState === RenderingStates.FINISHED; } renderView(view) { switch (view.renderingState) { case RenderingStates.FINISHED: return false; case RenderingStates.PAUSED: this.highestPriorityPage = view.renderingId; view.resume(); break; case RenderingStates.RUNNING: this.highestPriorityPage = view.renderingId; break; case RenderingStates.INITIAL: this.highestPriorityPage = view.renderingId; view.draw().finally(() => { this.renderHighestPriority(); }).catch(reason => { if (reason instanceof RenderingCancelledException) { return; } console.error("renderView:", reason); }); break; } return true; } } ;// ./web/pdf_scripting_manager.js class PDFScriptingManager { #closeCapability = null; #destroyCapability = null; #docProperties = null; #eventAbortController = null; #eventBus = null; #externalServices = null; #pdfDocument = null; #pdfViewer = null; #ready = false; #scripting = null; #willPrintCapability = null; constructor({ eventBus, externalServices = null, docProperties = null }) { this.#eventBus = eventBus; this.#externalServices = externalServices; this.#docProperties = docProperties; } setViewer(pdfViewer) { this.#pdfViewer = pdfViewer; } async setDocument(pdfDocument) { if (this.#pdfDocument) { await this.#destroyScripting(); } this.#pdfDocument = pdfDocument; if (!pdfDocument) { return; } const [objects, calculationOrder, docActions] = await Promise.all([pdfDocument.getFieldObjects(), pdfDocument.getCalculationOrderIds(), pdfDocument.getJSActions()]); if (!objects && !docActions) { await this.#destroyScripting(); return; } if (pdfDocument !== this.#pdfDocument) { return; } try { this.#scripting = this.#initScripting(); } catch (error) { console.error("setDocument:", error); await this.#destroyScripting(); return; } const eventBus = this.#eventBus; this.#eventAbortController = new AbortController(); const { signal } = this.#eventAbortController; eventBus._on("updatefromsandbox", event => { if (event?.source === window) { this.#updateFromSandbox(event.detail); } }, { signal }); eventBus._on("dispatcheventinsandbox", event => { this.#scripting?.dispatchEventInSandbox(event.detail); }, { signal }); eventBus._on("pagechanging", ({ pageNumber, previous }) => { if (pageNumber === previous) { return; } this.#dispatchPageClose(previous); this.#dispatchPageOpen(pageNumber); }, { signal }); eventBus._on("pagerendered", ({ pageNumber }) => { if (!this._pageOpenPending.has(pageNumber)) { return; } if (pageNumber !== this.#pdfViewer.currentPageNumber) { return; } this.#dispatchPageOpen(pageNumber); }, { signal }); eventBus._on("pagesdestroy", async () => { await this.#dispatchPageClose(this.#pdfViewer.currentPageNumber); await this.#scripting?.dispatchEventInSandbox({ id: "doc", name: "WillClose" }); this.#closeCapability?.resolve(); }, { signal }); try { const docProperties = await this.#docProperties(pdfDocument); if (pdfDocument !== this.#pdfDocument) { return; } await this.#scripting.createSandbox({ objects, calculationOrder, appInfo: { platform: navigator.platform, language: navigator.language }, docInfo: { ...docProperties, actions: docActions } }); eventBus.dispatch("sandboxcreated", { source: this }); } catch (error) { console.error("setDocument:", error); await this.#destroyScripting(); return; } await this.#scripting?.dispatchEventInSandbox({ id: "doc", name: "Open" }); await this.#dispatchPageOpen(this.#pdfViewer.currentPageNumber, true); Promise.resolve().then(() => { if (pdfDocument === this.#pdfDocument) { this.#ready = true; } }); } async dispatchWillSave() { return this.#scripting?.dispatchEventInSandbox({ id: "doc", name: "WillSave" }); } async dispatchDidSave() { return this.#scripting?.dispatchEventInSandbox({ id: "doc", name: "DidSave" }); } async dispatchWillPrint() { if (!this.#scripting) { return; } await this.#willPrintCapability?.promise; this.#willPrintCapability = Promise.withResolvers(); try { await this.#scripting.dispatchEventInSandbox({ id: "doc", name: "WillPrint" }); } catch (ex) { this.#willPrintCapability.resolve(); this.#willPrintCapability = null; throw ex; } await this.#willPrintCapability.promise; } async dispatchDidPrint() { return this.#scripting?.dispatchEventInSandbox({ id: "doc", name: "DidPrint" }); } get destroyPromise() { return this.#destroyCapability?.promise || null; } get ready() { return this.#ready; } get _pageOpenPending() { return shadow(this, "_pageOpenPending", new Set()); } get _visitedPages() { return shadow(this, "_visitedPages", new Map()); } async #updateFromSandbox(detail) { const pdfViewer = this.#pdfViewer; const isInPresentationMode = pdfViewer.isInPresentationMode || pdfViewer.isChangingPresentationMode; const { id, siblings, command, value } = detail; if (!id) { switch (command) { case "clear": console.clear(); break; case "error": console.error(value); break; case "layout": if (!isInPresentationMode) { const modes = apiPageLayoutToViewerModes(value); pdfViewer.spreadMode = modes.spreadMode; } break; case "page-num": pdfViewer.currentPageNumber = value + 1; break; case "print": await pdfViewer.pagesPromise; this.#eventBus.dispatch("print", { source: this }); break; case "println": console.log(value); break; case "zoom": if (!isInPresentationMode) { pdfViewer.currentScaleValue = value; } break; case "SaveAs": this.#eventBus.dispatch("download", { source: this }); break; case "FirstPage": pdfViewer.currentPageNumber = 1; break; case "LastPage": pdfViewer.currentPageNumber = pdfViewer.pagesCount; break; case "NextPage": pdfViewer.nextPage(); break; case "PrevPage": pdfViewer.previousPage(); break; case "ZoomViewIn": if (!isInPresentationMode) { pdfViewer.increaseScale(); } break; case "ZoomViewOut": if (!isInPresentationMode) { pdfViewer.decreaseScale(); } break; case "WillPrintFinished": this.#willPrintCapability?.resolve(); this.#willPrintCapability = null; break; } return; } if (isInPresentationMode && detail.focus) { return; } delete detail.id; delete detail.siblings; const ids = siblings ? [id, ...siblings] : [id]; for (const elementId of ids) { const element = document.querySelector(`[data-element-id="${elementId}"]`); if (element) { element.dispatchEvent(new CustomEvent("updatefromsandbox", { detail })); } else { this.#pdfDocument?.annotationStorage.setValue(elementId, detail); } } } async #dispatchPageOpen(pageNumber, initialize = false) { const pdfDocument = this.#pdfDocument, visitedPages = this._visitedPages; if (initialize) { this.#closeCapability = Promise.withResolvers(); } if (!this.#closeCapability) { return; } const pageView = this.#pdfViewer.getPageView(pageNumber - 1); if (pageView?.renderingState !== RenderingStates.FINISHED) { this._pageOpenPending.add(pageNumber); return; } this._pageOpenPending.delete(pageNumber); const actionsPromise = (async () => { const actions = await (!visitedPages.has(pageNumber) ? pageView.pdfPage?.getJSActions() : null); if (pdfDocument !== this.#pdfDocument) { return; } await this.#scripting?.dispatchEventInSandbox({ id: "page", name: "PageOpen", pageNumber, actions }); })(); visitedPages.set(pageNumber, actionsPromise); } async #dispatchPageClose(pageNumber) { const pdfDocument = this.#pdfDocument, visitedPages = this._visitedPages; if (!this.#closeCapability) { return; } if (this._pageOpenPending.has(pageNumber)) { return; } const actionsPromise = visitedPages.get(pageNumber); if (!actionsPromise) { return; } visitedPages.set(pageNumber, null); await actionsPromise; if (pdfDocument !== this.#pdfDocument) { return; } await this.#scripting?.dispatchEventInSandbox({ id: "page", name: "PageClose", pageNumber }); } #initScripting() { this.#destroyCapability = Promise.withResolvers(); if (this.#scripting) { throw new Error("#initScripting: Scripting already exists."); } return this.#externalServices.createScripting(); } async #destroyScripting() { if (!this.#scripting) { this.#pdfDocument = null; this.#destroyCapability?.resolve(); return; } if (this.#closeCapability) { await Promise.race([this.#closeCapability.promise, new Promise(resolve => { setTimeout(resolve, 1000); })]).catch(() => {}); this.#closeCapability = null; } this.#pdfDocument = null; try { await this.#scripting.destroySandbox(); } catch {} this.#willPrintCapability?.reject(new Error("Scripting destroyed.")); this.#willPrintCapability = null; this.#eventAbortController?.abort(); this.#eventAbortController = null; this._pageOpenPending.clear(); this._visitedPages.clear(); this.#scripting = null; this.#ready = false; this.#destroyCapability?.resolve(); } } ;// ./web/annotation_editor_layer_builder.js class AnnotationEditorLayerBuilder { #annotationLayer = null; #drawLayer = null; #onAppend = null; #structTreeLayer = null; #textLayer = null; #uiManager; constructor(options) { this.pdfPage = options.pdfPage; this.accessibilityManager = options.accessibilityManager; this.l10n = options.l10n; this.annotationEditorLayer = null; this.div = null; this._cancelled = false; this.#uiManager = options.uiManager; this.#annotationLayer = options.annotationLayer || null; this.#textLayer = options.textLayer || null; this.#drawLayer = options.drawLayer || null; this.#onAppend = options.onAppend || null; this.#structTreeLayer = options.structTreeLayer || null; } async render({ viewport, intent = "display" }) { if (intent !== "display") { return; } if (this._cancelled) { return; } const clonedViewport = viewport.clone({ dontFlip: true }); if (this.div) { this.annotationEditorLayer.update({ viewport: clonedViewport }); this.show(); return; } const div = this.div = document.createElement("div"); div.className = "annotationEditorLayer"; div.hidden = true; div.dir = this.#uiManager.direction; this.#onAppend?.(div); this.annotationEditorLayer = new AnnotationEditorLayer({ uiManager: this.#uiManager, div, structTreeLayer: this.#structTreeLayer, accessibilityManager: this.accessibilityManager, pageIndex: this.pdfPage.pageNumber - 1, l10n: this.l10n, viewport: clonedViewport, annotationLayer: this.#annotationLayer, textLayer: this.#textLayer, drawLayer: this.#drawLayer }); const parameters = { viewport: clonedViewport, div, annotations: null, intent }; this.annotationEditorLayer.render(parameters); this.show(); } cancel() { this._cancelled = true; if (!this.div) { return; } this.annotationEditorLayer.destroy(); } hide() { if (!this.div) { return; } this.annotationEditorLayer.pause(true); this.div.hidden = true; } show() { if (!this.div || this.annotationEditorLayer.isInvisible) { return; } this.div.hidden = false; this.annotationEditorLayer.pause(false); } } ;// ./web/annotation_layer_builder.js class AnnotationLayerBuilder { #annotations = null; #externalHide = false; #onAppend = null; #eventAbortController = null; #linksInjected = false; constructor({ pdfPage, linkService, downloadManager, annotationStorage = null, imageResourcesPath = "", renderForms = true, enableScripting = false, hasJSActionsPromise = null, fieldObjectsPromise = null, annotationCanvasMap = null, accessibilityManager = null, annotationEditorUIManager = null, onAppend = null }) { this.pdfPage = pdfPage; this.linkService = linkService; this.downloadManager = downloadManager; this.imageResourcesPath = imageResourcesPath; this.renderForms = renderForms; this.annotationStorage = annotationStorage; this.enableScripting = enableScripting; this._hasJSActionsPromise = hasJSActionsPromise || Promise.resolve(false); this._fieldObjectsPromise = fieldObjectsPromise || Promise.resolve(null); this._annotationCanvasMap = annotationCanvasMap; this._accessibilityManager = accessibilityManager; this._annotationEditorUIManager = annotationEditorUIManager; this.#onAppend = onAppend; this.annotationLayer = null; this.div = null; this._cancelled = false; this._eventBus = linkService.eventBus; } async render({ viewport, intent = "display", structTreeLayer = null }) { if (this.div) { if (this._cancelled || !this.annotationLayer) { return; } this.annotationLayer.update({ viewport: viewport.clone({ dontFlip: true }) }); return; } const [annotations, hasJSActions, fieldObjects] = await Promise.all([this.pdfPage.getAnnotations({ intent }), this._hasJSActionsPromise, this._fieldObjectsPromise]); if (this._cancelled) { return; } const div = this.div = document.createElement("div"); div.className = "annotationLayer"; this.#onAppend?.(div); if (annotations.length === 0) { this.#annotations = annotations; this.hide(true); return; } this.#initAnnotationLayer(viewport, structTreeLayer); await this.annotationLayer.render({ annotations, imageResourcesPath: this.imageResourcesPath, renderForms: this.renderForms, linkService: this.linkService, downloadManager: this.downloadManager, annotationStorage: this.annotationStorage, enableScripting: this.enableScripting, hasJSActions, fieldObjects }); this.#annotations = annotations; if (this.linkService.isInPresentationMode) { this.#updatePresentationModeState(PresentationModeState.FULLSCREEN); } if (!this.#eventAbortController) { this.#eventAbortController = new AbortController(); this._eventBus?._on("presentationmodechanged", evt => { this.#updatePresentationModeState(evt.state); }, { signal: this.#eventAbortController.signal }); } } #initAnnotationLayer(viewport, structTreeLayer) { this.annotationLayer = new AnnotationLayer({ div: this.div, accessibilityManager: this._accessibilityManager, annotationCanvasMap: this._annotationCanvasMap, annotationEditorUIManager: this._annotationEditorUIManager, page: this.pdfPage, viewport: viewport.clone({ dontFlip: true }), structTreeLayer }); } cancel() { this._cancelled = true; this.#eventAbortController?.abort(); this.#eventAbortController = null; } hide(internal = false) { this.#externalHide = !internal; if (!this.div) { return; } this.div.hidden = true; } hasEditableAnnotations() { return !!this.annotationLayer?.hasEditableAnnotations(); } async injectLinkAnnotations({ inferredLinks, viewport, structTreeLayer = null }) { if (this.#annotations === null) { throw new Error("`render` method must be called before `injectLinkAnnotations`."); } if (this._cancelled || this.#linksInjected) { return; } this.#linksInjected = true; const newLinks = this.#annotations.length ? this.#checkInferredLinks(inferredLinks) : inferredLinks; if (!newLinks.length) { return; } if (!this.annotationLayer) { this.#initAnnotationLayer(viewport, structTreeLayer); setLayerDimensions(this.div, viewport); } await this.annotationLayer.addLinkAnnotations(newLinks, this.linkService); if (!this.#externalHide) { this.div.hidden = false; } } #updatePresentationModeState(state) { if (!this.div) { return; } let disableFormElements = false; switch (state) { case PresentationModeState.FULLSCREEN: disableFormElements = true; break; case PresentationModeState.NORMAL: break; default: return; } for (const section of this.div.childNodes) { if (section.hasAttribute("data-internal-link")) { continue; } section.inert = disableFormElements; } } #checkInferredLinks(inferredLinks) { function annotationRects(annot) { if (!annot.quadPoints) { return [annot.rect]; } const rects = []; for (let i = 2, ii = annot.quadPoints.length; i < ii; i += 8) { const trX = annot.quadPoints[i]; const trY = annot.quadPoints[i + 1]; const blX = annot.quadPoints[i + 2]; const blY = annot.quadPoints[i + 3]; rects.push([blX, blY, trX, trY]); } return rects; } function intersectAnnotations(annot1, annot2) { const intersections = []; const annot1Rects = annotationRects(annot1); const annot2Rects = annotationRects(annot2); for (const rect1 of annot1Rects) { for (const rect2 of annot2Rects) { const intersection = Util.intersect(rect1, rect2); if (intersection) { intersections.push(intersection); } } } return intersections; } function areaRects(rects) { let totalArea = 0; for (const rect of rects) { totalArea += Math.abs((rect[2] - rect[0]) * (rect[3] - rect[1])); } return totalArea; } return inferredLinks.filter(link => { let linkAreaRects; for (const annotation of this.#annotations) { if (annotation.annotationType !== AnnotationType.LINK || !annotation.url) { continue; } const intersections = intersectAnnotations(annotation, link); if (intersections.length === 0) { continue; } linkAreaRects ??= areaRects(annotationRects(link)); if (areaRects(intersections) / linkAreaRects > 0.5) { return false; } } return true; }); } } ;// ./web/autolinker.js function DOMRectToPDF({ width, height, left, top }, pdfPageView) { if (width === 0 || height === 0) { return null; } const pageBox = pdfPageView.textLayer.div.getBoundingClientRect(); const bottomLeft = pdfPageView.getPagePoint(left - pageBox.left, top - pageBox.top); const topRight = pdfPageView.getPagePoint(left - pageBox.left + width, top - pageBox.top + height); return Util.normalizeRect([bottomLeft[0], bottomLeft[1], topRight[0], topRight[1]]); } function calculateLinkPosition(range, pdfPageView) { const rangeRects = range.getClientRects(); if (rangeRects.length === 1) { return { rect: DOMRectToPDF(rangeRects[0], pdfPageView) }; } const rect = [Infinity, Infinity, -Infinity, -Infinity]; const quadPoints = []; let i = 0; for (const domRect of rangeRects) { const normalized = DOMRectToPDF(domRect, pdfPageView); if (normalized === null) { continue; } quadPoints[i] = quadPoints[i + 4] = normalized[0]; quadPoints[i + 1] = quadPoints[i + 3] = normalized[3]; quadPoints[i + 2] = quadPoints[i + 6] = normalized[2]; quadPoints[i + 5] = quadPoints[i + 7] = normalized[1]; Util.rectBoundingBox(...normalized, rect); i += 8; } return { quadPoints, rect }; } function textPosition(container, offset) { let currentContainer = container; do { if (currentContainer.nodeType === Node.TEXT_NODE) { const currentLength = currentContainer.textContent.length; if (offset <= currentLength) { return [currentContainer, offset]; } offset -= currentLength; } else if (currentContainer.firstChild) { currentContainer = currentContainer.firstChild; continue; } while (!currentContainer.nextSibling && currentContainer !== container) { currentContainer = currentContainer.parentNode; } if (currentContainer !== container) { currentContainer = currentContainer.nextSibling; } } while (currentContainer !== container); throw new Error("Offset is bigger than container's contents length."); } function createLinkAnnotation({ url, index, length }, pdfPageView, id) { const highlighter = pdfPageView._textHighlighter; const [{ begin, end }] = highlighter._convertMatches([index], [length]); const range = new Range(); range.setStart(...textPosition(highlighter.textDivs[begin.divIdx], begin.offset)); range.setEnd(...textPosition(highlighter.textDivs[end.divIdx], end.offset)); return { id: `inferred_link_${id}`, unsafeUrl: url, url, annotationType: AnnotationType.LINK, rotation: 0, ...calculateLinkPosition(range, pdfPageView), borderStyle: null }; } class Autolinker { static #index = 0; static #regex; static findLinks(text) { this.#regex ??= /\b(?:https?:\/\/|mailto:|www\.)(?:[\S--[\p{P}<>]]|\/|[\S--[\[\]]]+[\S--[\p{P}<>]])+|\b[\S--[@\p{Ps}\p{Pe}<>]]+@([\S--[\p{P}<>]]+(?:\.[\S--[\p{P}<>]]+)+)/gmv; const [normalizedText, diffs] = normalize(text); const matches = normalizedText.matchAll(this.#regex); const links = []; for (const match of matches) { const [url, emailDomain] = match; let raw; if (url.startsWith("www.") || url.startsWith("http://") || url.startsWith("https://")) { raw = url; } else if (URL.canParse(`http://${emailDomain}`)) { raw = url.startsWith("mailto:") ? url : `mailto:${url}`; } else { continue; } const absoluteURL = createValidAbsoluteUrl(raw, null, { addDefaultProtocol: true }); if (absoluteURL) { const [index, length] = getOriginalIndex(diffs, match.index, url.length); links.push({ url: absoluteURL.href, index, length }); } } return links; } static processLinks(pdfPageView) { return this.findLinks(pdfPageView._textHighlighter.textContentItemsStr.join("\n")).map(link => createLinkAnnotation(link, pdfPageView, this.#index++)); } } ;// ./web/base_pdf_page_view.js class BasePDFPageView { #enableHWA = false; #loadingId = null; #minDurationToUpdateCanvas = 0; #renderError = null; #renderingState = RenderingStates.INITIAL; #showCanvas = null; #startTime = 0; #tempCanvas = null; canvas = null; div = null; eventBus = null; id = null; pageColors = null; renderingQueue = null; renderTask = null; resume = null; constructor(options) { this.#enableHWA = #enableHWA in options ? options.#enableHWA : options.enableHWA || false; this.eventBus = options.eventBus; this.id = options.id; this.pageColors = options.pageColors || null; this.renderingQueue = options.renderingQueue; this.#minDurationToUpdateCanvas = options.minDurationToUpdateCanvas ?? 500; } get renderingState() { return this.#renderingState; } set renderingState(state) { if (state === this.#renderingState) { return; } this.#renderingState = state; if (this.#loadingId) { clearTimeout(this.#loadingId); this.#loadingId = null; } switch (state) { case RenderingStates.PAUSED: this.div.classList.remove("loading"); this.#startTime = 0; this.#showCanvas?.(false); break; case RenderingStates.RUNNING: this.div.classList.add("loadingIcon"); this.#loadingId = setTimeout(() => { this.div.classList.add("loading"); this.#loadingId = null; }, 0); this.#startTime = Date.now(); break; case RenderingStates.INITIAL: case RenderingStates.FINISHED: this.div.classList.remove("loadingIcon", "loading"); this.#startTime = 0; break; } } _createCanvas(onShow, hideUntilComplete = false) { const { pageColors } = this; const hasHCM = !!(pageColors?.background && pageColors?.foreground); const prevCanvas = this.canvas; const updateOnFirstShow = !prevCanvas && !hasHCM && !hideUntilComplete; let canvas = this.canvas = document.createElement("canvas"); this.#showCanvas = isLastShow => { if (updateOnFirstShow) { let tempCanvas = this.#tempCanvas; if (!isLastShow && this.#minDurationToUpdateCanvas > 0) { if (Date.now() - this.#startTime < this.#minDurationToUpdateCanvas) { return; } if (!tempCanvas) { tempCanvas = this.#tempCanvas = canvas; canvas = this.canvas = canvas.cloneNode(false); onShow(canvas); } } if (tempCanvas) { const ctx = canvas.getContext("2d", { alpha: false }); ctx.drawImage(tempCanvas, 0, 0); if (isLastShow) { this.#resetTempCanvas(); } else { this.#startTime = Date.now(); } return; } onShow(canvas); this.#showCanvas = null; return; } if (!isLastShow) { return; } if (prevCanvas) { prevCanvas.replaceWith(canvas); prevCanvas.width = prevCanvas.height = 0; } else { onShow(canvas); } }; const ctx = canvas.getContext("2d", { alpha: false, willReadFrequently: !this.#enableHWA }); return { canvas, prevCanvas, ctx }; } #renderContinueCallback = cont => { this.#showCanvas?.(false); if (this.renderingQueue && !this.renderingQueue.isHighestPriority(this)) { this.renderingState = RenderingStates.PAUSED; this.resume = () => { this.renderingState = RenderingStates.RUNNING; cont(); }; return; } cont(); }; _resetCanvas() { const { canvas } = this; if (!canvas) { return; } canvas.remove(); canvas.width = canvas.height = 0; this.canvas = null; this.#resetTempCanvas(); } #resetTempCanvas() { if (this.#tempCanvas) { this.#tempCanvas.width = this.#tempCanvas.height = 0; this.#tempCanvas = null; } } async _drawCanvas(options, onCancel, onFinish) { const renderTask = this.renderTask = this.pdfPage.render(options); renderTask.onContinue = this.#renderContinueCallback; renderTask.onError = error => { if (error instanceof RenderingCancelledException) { onCancel(); this.#renderError = null; } }; let error = null; try { await renderTask.promise; this.#showCanvas?.(true); } catch (e) { if (e instanceof RenderingCancelledException) { return; } error = e; this.#showCanvas?.(true); } finally { this.#renderError = error; if (renderTask === this.renderTask) { this.renderTask = null; } } this.renderingState = RenderingStates.FINISHED; onFinish(renderTask); if (error) { throw error; } } cancelRendering({ cancelExtraDelay = 0 } = {}) { if (this.renderTask) { this.renderTask.cancel(cancelExtraDelay); this.renderTask = null; } this.resume = null; } dispatchPageRender() { this.eventBus.dispatch("pagerender", { source: this, pageNumber: this.id }); } dispatchPageRendered(cssTransform, isDetailView) { this.eventBus.dispatch("pagerendered", { source: this, pageNumber: this.id, cssTransform, isDetailView, timestamp: performance.now(), error: this.#renderError }); } } ;// ./web/draw_layer_builder.js class DrawLayerBuilder { #drawLayer = null; constructor(options) { this.pageIndex = options.pageIndex; } async render({ intent = "display" }) { if (intent !== "display" || this.#drawLayer || this._cancelled) { return; } this.#drawLayer = new DrawLayer({ pageIndex: this.pageIndex }); } cancel() { this._cancelled = true; if (!this.#drawLayer) { return; } this.#drawLayer.destroy(); this.#drawLayer = null; } setParent(parent) { this.#drawLayer?.setParent(parent); } getDrawLayer() { return this.#drawLayer; } } ;// ./web/pdf_page_detail_view.js class PDFPageDetailView extends BasePDFPageView { #detailArea = null; renderingCancelled = false; constructor({ pageView }) { super(pageView); this.pageView = pageView; this.renderingId = "detail" + this.id; this.div = pageView.div; } setPdfPage(pdfPage) { this.pageView.setPdfPage(pdfPage); } get pdfPage() { return this.pageView.pdfPage; } get renderingState() { return super.renderingState; } set renderingState(value) { this.renderingCancelled = false; super.renderingState = value; } reset({ keepCanvas = false } = {}) { const renderingCancelled = this.renderingCancelled || this.renderingState === RenderingStates.RUNNING || this.renderingState === RenderingStates.PAUSED; this.cancelRendering(); this.renderingState = RenderingStates.INITIAL; this.renderingCancelled = renderingCancelled; if (!keepCanvas) { this._resetCanvas(); } } #shouldRenderDifferentArea(visibleArea) { if (!this.#detailArea) { return true; } const minDetailX = this.#detailArea.minX; const minDetailY = this.#detailArea.minY; const maxDetailX = this.#detailArea.width + minDetailX; const maxDetailY = this.#detailArea.height + minDetailY; if (visibleArea.minX < minDetailX || visibleArea.minY < minDetailY || visibleArea.maxX > maxDetailX || visibleArea.maxY > maxDetailY) { return true; } const { width: maxWidth, height: maxHeight, scale } = this.pageView.viewport; if (this.#detailArea.scale !== scale) { return true; } const paddingLeftSize = visibleArea.minX - minDetailX; const paddingRightSize = maxDetailX - visibleArea.maxX; const paddingTopSize = visibleArea.minY - minDetailY; const paddingBottomSize = maxDetailY - visibleArea.maxY; const MOVEMENT_THRESHOLD = 0.5; const ratio = (1 + MOVEMENT_THRESHOLD) / MOVEMENT_THRESHOLD; if (minDetailX > 0 && paddingRightSize / paddingLeftSize > ratio || maxDetailX < maxWidth && paddingLeftSize / paddingRightSize > ratio || minDetailY > 0 && paddingBottomSize / paddingTopSize > ratio || maxDetailY < maxHeight && paddingTopSize / paddingBottomSize > ratio) { return true; } return false; } update({ visibleArea = null, underlyingViewUpdated = false } = {}) { if (underlyingViewUpdated) { this.cancelRendering(); this.renderingState = RenderingStates.INITIAL; return; } if (!this.#shouldRenderDifferentArea(visibleArea)) { return; } const { viewport, maxCanvasPixels, capCanvasAreaFactor } = this.pageView; const visibleWidth = visibleArea.maxX - visibleArea.minX; const visibleHeight = visibleArea.maxY - visibleArea.minY; const visiblePixels = visibleWidth * visibleHeight * OutputScale.pixelRatio ** 2; const maxDetailToVisibleLinearRatio = Math.sqrt(OutputScale.capPixels(maxCanvasPixels, capCanvasAreaFactor) / visiblePixels); const maxOverflowScale = (maxDetailToVisibleLinearRatio - 1) / 2; let overflowScale = Math.min(1, maxOverflowScale); if (overflowScale < 0) { overflowScale = 0; } const overflowWidth = visibleWidth * overflowScale; const overflowHeight = visibleHeight * overflowScale; const minX = Math.max(0, visibleArea.minX - overflowWidth); const maxX = Math.min(viewport.width, visibleArea.maxX + overflowWidth); const minY = Math.max(0, visibleArea.minY - overflowHeight); const maxY = Math.min(viewport.height, visibleArea.maxY + overflowHeight); const width = maxX - minX; const height = maxY - minY; this.#detailArea = { minX, minY, width, height, scale: viewport.scale }; this.reset({ keepCanvas: true }); } async draw() { if (this.pageView.detailView !== this) { return undefined; } const hideUntilComplete = this.pageView.renderingState === RenderingStates.FINISHED || this.renderingState === RenderingStates.FINISHED; if (this.renderingState !== RenderingStates.INITIAL) { console.error("Must be in new state before drawing"); this.reset(); } const { div, pdfPage, viewport } = this.pageView; if (!pdfPage) { this.renderingState = RenderingStates.FINISHED; throw new Error("pdfPage is not loaded"); } this.renderingState = RenderingStates.RUNNING; const canvasWrapper = this.pageView._ensureCanvasWrapper(); const { canvas, prevCanvas, ctx } = this._createCanvas(newCanvas => { if (canvasWrapper.firstElementChild?.tagName === "CANVAS") { canvasWrapper.firstElementChild.after(newCanvas); } else { canvasWrapper.prepend(newCanvas); } }, hideUntilComplete); canvas.setAttribute("aria-hidden", "true"); const { width, height } = viewport; const area = this.#detailArea; const { pixelRatio } = OutputScale; const transform = [pixelRatio, 0, 0, pixelRatio, -area.minX * pixelRatio, -area.minY * pixelRatio]; canvas.width = area.width * pixelRatio; canvas.height = area.height * pixelRatio; const { style } = canvas; style.width = `${area.width * 100 / width}%`; style.height = `${area.height * 100 / height}%`; style.top = `${area.minY * 100 / height}%`; style.left = `${area.minX * 100 / width}%`; const renderingPromise = this._drawCanvas(this.pageView._getRenderingContext(ctx, transform), () => { this.canvas?.remove(); this.canvas = prevCanvas; }, () => { this.dispatchPageRendered(false, true); }); div.setAttribute("data-loaded", true); this.dispatchPageRender(); return renderingPromise; } } ;// ./web/struct_tree_layer_builder.js const PDF_ROLE_TO_HTML_ROLE = { Document: null, DocumentFragment: null, Part: "group", Sect: "group", Div: "group", Aside: "note", NonStruct: "none", P: null, H: "heading", Title: null, FENote: "note", Sub: "group", Lbl: null, Span: null, Em: null, Strong: null, Link: "link", Annot: "note", Form: "form", Ruby: null, RB: null, RT: null, RP: null, Warichu: null, WT: null, WP: null, L: "list", LI: "listitem", LBody: null, Table: "table", TR: "row", TH: "columnheader", TD: "cell", THead: "columnheader", TBody: null, TFoot: null, Caption: null, Figure: "figure", Formula: null, Artifact: null }; const HEADING_PATTERN = /^H(\d+)$/; class StructTreeLayerBuilder { #promise; #treeDom = null; #treePromise; #elementAttributes = new Map(); #rawDims; #elementsToAddToTextLayer = null; constructor(pdfPage, rawDims) { this.#promise = pdfPage.getStructTree(); this.#rawDims = rawDims; } async render() { if (this.#treePromise) { return this.#treePromise; } const { promise, resolve, reject } = Promise.withResolvers(); this.#treePromise = promise; try { this.#treeDom = this.#walk(await this.#promise); } catch (ex) { reject(ex); } this.#promise = null; this.#treeDom?.classList.add("structTree"); resolve(this.#treeDom); return promise; } async getAriaAttributes(annotationId) { try { await this.render(); return this.#elementAttributes.get(annotationId); } catch {} return null; } hide() { if (this.#treeDom && !this.#treeDom.hidden) { this.#treeDom.hidden = true; } } show() { if (this.#treeDom?.hidden) { this.#treeDom.hidden = false; } } #setAttributes(structElement, htmlElement) { const { alt, id, lang } = structElement; if (alt !== undefined) { let added = false; const label = removeNullCharacters(alt); for (const child of structElement.children) { if (child.type === "annotation") { let attrs = this.#elementAttributes.get(child.id); if (!attrs) { attrs = new Map(); this.#elementAttributes.set(child.id, attrs); } attrs.set("aria-label", label); added = true; } } if (!added) { htmlElement.setAttribute("aria-label", label); } } if (id !== undefined) { htmlElement.setAttribute("aria-owns", id); } if (lang !== undefined) { htmlElement.setAttribute("lang", removeNullCharacters(lang, true)); } } #addImageInTextLayer(node, element) { const { alt, bbox, children } = node; const child = children?.[0]; if (!this.#rawDims || !alt || !bbox || child?.type !== "content") { return false; } const { id } = child; if (!id) { return false; } element.setAttribute("aria-owns", id); const img = document.createElement("span"); (this.#elementsToAddToTextLayer ||= new Map()).set(id, img); img.setAttribute("role", "img"); img.setAttribute("aria-label", removeNullCharacters(alt)); const { pageHeight, pageX, pageY } = this.#rawDims; const calc = "calc(var(--total-scale-factor) *"; const { style } = img; style.width = `${calc}${bbox[2] - bbox[0]}px)`; style.height = `${calc}${bbox[3] - bbox[1]}px)`; style.left = `${calc}${bbox[0] - pageX}px)`; style.top = `${calc}${pageHeight - bbox[3] + pageY}px)`; return true; } addElementsToTextLayer() { if (!this.#elementsToAddToTextLayer) { return; } for (const [id, img] of this.#elementsToAddToTextLayer) { document.getElementById(id)?.append(img); } this.#elementsToAddToTextLayer.clear(); this.#elementsToAddToTextLayer = null; } #walk(node) { if (!node) { return null; } const element = document.createElement("span"); if ("role" in node) { const { role } = node; const match = role.match(HEADING_PATTERN); if (match) { element.setAttribute("role", "heading"); element.setAttribute("aria-level", match[1]); } else if (PDF_ROLE_TO_HTML_ROLE[role]) { element.setAttribute("role", PDF_ROLE_TO_HTML_ROLE[role]); } if (role === "Figure" && this.#addImageInTextLayer(node, element)) { return element; } } this.#setAttributes(node, element); if (node.children) { if (node.children.length === 1 && "id" in node.children[0]) { this.#setAttributes(node.children[0], element); } else { for (const kid of node.children) { element.append(this.#walk(kid)); } } } return element; } } ;// ./web/text_accessibility.js class TextAccessibilityManager { #enabled = false; #textChildren = null; #textNodes = new Map(); #waitingElements = new Map(); setTextMapping(textDivs) { this.#textChildren = textDivs; } static #compareElementPositions(e1, e2) { const rect1 = e1.getBoundingClientRect(); const rect2 = e2.getBoundingClientRect(); if (rect1.width === 0 && rect1.height === 0) { return +1; } if (rect2.width === 0 && rect2.height === 0) { return -1; } const top1 = rect1.y; const bot1 = rect1.y + rect1.height; const mid1 = rect1.y + rect1.height / 2; const top2 = rect2.y; const bot2 = rect2.y + rect2.height; const mid2 = rect2.y + rect2.height / 2; if (mid1 <= top2 && mid2 >= bot1) { return -1; } if (mid2 <= top1 && mid1 >= bot2) { return +1; } const centerX1 = rect1.x + rect1.width / 2; const centerX2 = rect2.x + rect2.width / 2; return centerX1 - centerX2; } enable() { if (this.#enabled) { throw new Error("TextAccessibilityManager is already enabled."); } if (!this.#textChildren) { throw new Error("Text divs and strings have not been set."); } this.#enabled = true; this.#textChildren = this.#textChildren.slice(); this.#textChildren.sort(TextAccessibilityManager.#compareElementPositions); if (this.#textNodes.size > 0) { const textChildren = this.#textChildren; for (const [id, nodeIndex] of this.#textNodes) { const element = document.getElementById(id); if (!element) { this.#textNodes.delete(id); continue; } this.#addIdToAriaOwns(id, textChildren[nodeIndex]); } } for (const [element, isRemovable] of this.#waitingElements) { this.addPointerInTextLayer(element, isRemovable); } this.#waitingElements.clear(); } disable() { if (!this.#enabled) { return; } this.#waitingElements.clear(); this.#textChildren = null; this.#enabled = false; } removePointerInTextLayer(element) { if (!this.#enabled) { this.#waitingElements.delete(element); return; } const children = this.#textChildren; if (!children || children.length === 0) { return; } const { id } = element; const nodeIndex = this.#textNodes.get(id); if (nodeIndex === undefined) { return; } const node = children[nodeIndex]; this.#textNodes.delete(id); let owns = node.getAttribute("aria-owns"); if (owns?.includes(id)) { owns = owns.split(" ").filter(x => x !== id).join(" "); if (owns) { node.setAttribute("aria-owns", owns); } else { node.removeAttribute("aria-owns"); node.setAttribute("role", "presentation"); } } } #addIdToAriaOwns(id, node) { const owns = node.getAttribute("aria-owns"); if (!owns?.includes(id)) { node.setAttribute("aria-owns", owns ? `${owns} ${id}` : id); } node.removeAttribute("role"); } addPointerInTextLayer(element, isRemovable) { const { id } = element; if (!id) { return null; } if (!this.#enabled) { this.#waitingElements.set(element, isRemovable); return null; } if (isRemovable) { this.removePointerInTextLayer(element); } const children = this.#textChildren; if (!children || children.length === 0) { return null; } const index = binarySearchFirstItem(children, node => TextAccessibilityManager.#compareElementPositions(element, node) < 0); const nodeIndex = Math.max(0, index - 1); const child = children[nodeIndex]; this.#addIdToAriaOwns(id, child); this.#textNodes.set(id, nodeIndex); const parent = child.parentNode; return parent?.classList.contains("markedContent") ? parent.id : null; } moveElementInDOM(container, element, contentElement, isRemovable) { const id = this.addPointerInTextLayer(contentElement, isRemovable); if (!container.hasChildNodes()) { container.append(element); return id; } const children = Array.from(container.childNodes).filter(node => node !== element); if (children.length === 0) { return id; } const elementToCompare = contentElement || element; const index = binarySearchFirstItem(children, node => TextAccessibilityManager.#compareElementPositions(elementToCompare, node) < 0); if (index === 0) { children[0].before(element); } else { children[index - 1].after(element); } return id; } } ;// ./web/text_highlighter.js class TextHighlighter { #eventAbortController = null; constructor({ findController, eventBus, pageIndex }) { this.findController = findController; this.matches = []; this.eventBus = eventBus; this.pageIdx = pageIndex; this.textDivs = null; this.textContentItemsStr = null; this.enabled = false; } setTextMapping(divs, texts) { this.textDivs = divs; this.textContentItemsStr = texts; } enable() { if (!this.textDivs || !this.textContentItemsStr) { throw new Error("Text divs and strings have not been set."); } if (this.enabled) { throw new Error("TextHighlighter is already enabled."); } this.enabled = true; if (!this.#eventAbortController) { this.#eventAbortController = new AbortController(); this.eventBus._on("updatetextlayermatches", evt => { if (evt.pageIndex === this.pageIdx || evt.pageIndex === -1) { this._updateMatches(); } }, { signal: this.#eventAbortController.signal }); } this._updateMatches(); } disable() { if (!this.enabled) { return; } this.enabled = false; this.#eventAbortController?.abort(); this.#eventAbortController = null; this._updateMatches(true); } _convertMatches(matches, matchesLength) { if (!matches) { return []; } const { textContentItemsStr } = this; let i = 0, iIndex = 0; const end = textContentItemsStr.length - 1; const result = []; for (let m = 0, mm = matches.length; m < mm; m++) { let matchIdx = matches[m]; while (i !== end && matchIdx >= iIndex + textContentItemsStr[i].length) { iIndex += textContentItemsStr[i].length; i++; } if (i === textContentItemsStr.length) { console.error("Could not find a matching mapping"); } const match = { begin: { divIdx: i, offset: matchIdx - iIndex } }; matchIdx += matchesLength[m]; while (i !== end && matchIdx > iIndex + textContentItemsStr[i].length) { iIndex += textContentItemsStr[i].length; i++; } match.end = { divIdx: i, offset: matchIdx - iIndex }; result.push(match); } return result; } _renderMatches(matches) { if (matches.length === 0) { return; } const { findController, pageIdx } = this; const { textContentItemsStr, textDivs } = this; const isSelectedPage = pageIdx === findController.selected.pageIdx; const selectedMatchIdx = findController.selected.matchIdx; const highlightAll = findController.state.highlightAll; let prevEnd = null; const infinity = { divIdx: -1, offset: undefined }; function beginText(begin, className) { const divIdx = begin.divIdx; textDivs[divIdx].textContent = ""; return appendTextToDiv(divIdx, 0, begin.offset, className); } function appendTextToDiv(divIdx, fromOffset, toOffset, className) { let div = textDivs[divIdx]; if (div.nodeType === Node.TEXT_NODE) { const span = document.createElement("span"); div.before(span); span.append(div); textDivs[divIdx] = span; div = span; } const content = textContentItemsStr[divIdx].substring(fromOffset, toOffset); const node = document.createTextNode(content); if (className) { const span = document.createElement("span"); span.className = `${className} appended`; span.append(node); div.append(span); if (className.includes("selected")) { const { left } = span.getClientRects()[0]; const parentLeft = div.getBoundingClientRect().left; return left - parentLeft; } return 0; } div.append(node); return 0; } let i0 = selectedMatchIdx, i1 = i0 + 1; if (highlightAll) { i0 = 0; i1 = matches.length; } else if (!isSelectedPage) { return; } let lastDivIdx = -1; let lastOffset = -1; for (let i = i0; i < i1; i++) { const match = matches[i]; const begin = match.begin; if (begin.divIdx === lastDivIdx && begin.offset === lastOffset) { continue; } lastDivIdx = begin.divIdx; lastOffset = begin.offset; const end = match.end; const isSelected = isSelectedPage && i === selectedMatchIdx; const highlightSuffix = isSelected ? " selected" : ""; let selectedLeft = 0; if (!prevEnd || begin.divIdx !== prevEnd.divIdx) { if (prevEnd !== null) { appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset); } beginText(begin); } else { appendTextToDiv(prevEnd.divIdx, prevEnd.offset, begin.offset); } if (begin.divIdx === end.divIdx) { selectedLeft = appendTextToDiv(begin.divIdx, begin.offset, end.offset, "highlight" + highlightSuffix); } else { selectedLeft = appendTextToDiv(begin.divIdx, begin.offset, infinity.offset, "highlight begin" + highlightSuffix); for (let n0 = begin.divIdx + 1, n1 = end.divIdx; n0 < n1; n0++) { textDivs[n0].className = "highlight middle" + highlightSuffix; } beginText(end, "highlight end" + highlightSuffix); } prevEnd = end; if (isSelected) { findController.scrollMatchIntoView({ element: textDivs[begin.divIdx], selectedLeft, pageIndex: pageIdx, matchIndex: selectedMatchIdx }); } } if (prevEnd) { appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset); } } _updateMatches(reset = false) { if (!this.enabled && !reset) { return; } const { findController, matches, pageIdx } = this; const { textContentItemsStr, textDivs } = this; let clearedUntilDivIdx = -1; for (const match of matches) { const begin = Math.max(clearedUntilDivIdx, match.begin.divIdx); for (let n = begin, end = match.end.divIdx; n <= end; n++) { const div = textDivs[n]; div.textContent = textContentItemsStr[n]; div.className = ""; } clearedUntilDivIdx = match.end.divIdx + 1; } if (!findController?.highlightMatches || reset) { return; } const pageMatches = findController.pageMatches[pageIdx] || null; const pageMatchesLength = findController.pageMatchesLength[pageIdx] || null; this.matches = this._convertMatches(pageMatches, pageMatchesLength); this._renderMatches(this.matches); } } ;// ./web/text_layer_builder.js class TextLayerBuilder { #enablePermissions = false; #onAppend = null; #renderingDone = false; #textLayer = null; static #textLayers = new Map(); static #selectionChangeAbortController = null; constructor({ pdfPage, highlighter = null, accessibilityManager = null, enablePermissions = false, onAppend = null }) { this.pdfPage = pdfPage; this.highlighter = highlighter; this.accessibilityManager = accessibilityManager; this.#enablePermissions = enablePermissions === true; this.#onAppend = onAppend; this.div = document.createElement("div"); this.div.tabIndex = 0; this.div.className = "textLayer"; } async render({ viewport, textContentParams = null }) { if (this.#renderingDone && this.#textLayer) { this.#textLayer.update({ viewport, onBefore: this.hide.bind(this) }); this.show(); return; } this.cancel(); this.#textLayer = new TextLayer({ textContentSource: this.pdfPage.streamTextContent(textContentParams || { includeMarkedContent: true, disableNormalization: true }), container: this.div, viewport }); const { textDivs, textContentItemsStr } = this.#textLayer; this.highlighter?.setTextMapping(textDivs, textContentItemsStr); this.accessibilityManager?.setTextMapping(textDivs); await this.#textLayer.render(); this.#renderingDone = true; const endOfContent = document.createElement("div"); endOfContent.className = "endOfContent"; this.div.append(endOfContent); this.#bindMouse(endOfContent); this.#onAppend?.(this.div); this.highlighter?.enable(); this.accessibilityManager?.enable(); } hide() { if (!this.div.hidden && this.#renderingDone) { this.highlighter?.disable(); this.div.hidden = true; } } show() { if (this.div.hidden && this.#renderingDone) { this.div.hidden = false; this.highlighter?.enable(); } } cancel() { this.#textLayer?.cancel(); this.#textLayer = null; this.highlighter?.disable(); this.accessibilityManager?.disable(); TextLayerBuilder.#removeGlobalSelectionListener(this.div); } #bindMouse(end) { const { div } = this; div.addEventListener("mousedown", () => { div.classList.add("selecting"); }); div.addEventListener("copy", event => { if (!this.#enablePermissions) { const selection = document.getSelection(); event.clipboardData.setData("text/plain", removeNullCharacters(normalizeUnicode(selection.toString()))); } stopEvent(event); }); TextLayerBuilder.#textLayers.set(div, end); TextLayerBuilder.#enableGlobalSelectionListener(); } static #removeGlobalSelectionListener(textLayerDiv) { this.#textLayers.delete(textLayerDiv); if (this.#textLayers.size === 0) { this.#selectionChangeAbortController?.abort(); this.#selectionChangeAbortController = null; } } static #enableGlobalSelectionListener() { if (this.#selectionChangeAbortController) { return; } this.#selectionChangeAbortController = new AbortController(); const { signal } = this.#selectionChangeAbortController; const reset = (end, textLayer) => { textLayer.classList.remove("selecting"); }; let isPointerDown = false; document.addEventListener("pointerdown", () => { isPointerDown = true; }, { signal }); document.addEventListener("pointerup", () => { isPointerDown = false; this.#textLayers.forEach(reset); }, { signal }); window.addEventListener("blur", () => { isPointerDown = false; this.#textLayers.forEach(reset); }, { signal }); document.addEventListener("keyup", () => { if (!isPointerDown) { this.#textLayers.forEach(reset); } }, { signal }); document.addEventListener("selectionchange", () => { const selection = document.getSelection(); if (selection.rangeCount === 0) { this.#textLayers.forEach(reset); return; } const activeTextLayers = new Set(); for (let i = 0; i < selection.rangeCount; i++) { const range = selection.getRangeAt(i); for (const textLayerDiv of this.#textLayers.keys()) { if (!activeTextLayers.has(textLayerDiv) && range.intersectsNode(textLayerDiv)) { activeTextLayers.add(textLayerDiv); } } } for (const [textLayerDiv, endDiv] of this.#textLayers) { if (activeTextLayers.has(textLayerDiv)) { textLayerDiv.classList.add("selecting"); } else { reset(endDiv, textLayerDiv); } } }, { signal }); } } ;// ./web/pdf_page_view.js const DEFAULT_LAYER_PROPERTIES = null; const LAYERS_ORDER = new Map([["canvasWrapper", 0], ["textLayer", 1], ["annotationLayer", 2], ["annotationEditorLayer", 3], ["xfaLayer", 3]]); class PDFPageView extends BasePDFPageView { #annotationMode = AnnotationMode.ENABLE_FORMS; #canvasWrapper = null; #enableAutoLinking = true; #hasRestrictedScaling = false; #isEditing = false; #layerProperties = null; #needsRestrictedScaling = false; #originalViewport = null; #previousRotation = null; #scaleRoundX = 1; #scaleRoundY = 1; #textLayerMode = TextLayerMode.ENABLE; #userUnit = 1; #useThumbnailCanvas = { directDrawing: true, initialOptionalContent: true, regularAnnotations: true }; #layers = [null, null, null, null]; constructor(options) { super(options); const container = options.container; const defaultViewport = options.defaultViewport; this.renderingId = "page" + this.id; this.#layerProperties = options.layerProperties || DEFAULT_LAYER_PROPERTIES; this.pdfPage = null; this.pageLabel = null; this.rotation = 0; this.scale = options.scale || DEFAULT_SCALE; this.viewport = defaultViewport; this.pdfPageRotate = defaultViewport.rotation; this._optionalContentConfigPromise = options.optionalContentConfigPromise || null; this.#textLayerMode = options.textLayerMode ?? TextLayerMode.ENABLE; this.#annotationMode = options.annotationMode ?? AnnotationMode.ENABLE_FORMS; this.imageResourcesPath = options.imageResourcesPath || ""; this.enableDetailCanvas = options.enableDetailCanvas ?? true; this.maxCanvasPixels = options.maxCanvasPixels ?? AppOptions.get("maxCanvasPixels"); this.maxCanvasDim = options.maxCanvasDim || AppOptions.get("maxCanvasDim"); this.capCanvasAreaFactor = options.capCanvasAreaFactor ?? AppOptions.get("capCanvasAreaFactor"); this.#enableAutoLinking = options.enableAutoLinking !== false; this.l10n = options.l10n; this._annotationCanvasMap = null; this.annotationLayer = null; this.annotationEditorLayer = null; this.textLayer = null; this.xfaLayer = null; this.structTreeLayer = null; this.drawLayer = null; this.detailView = null; const div = document.createElement("div"); div.className = "page"; div.setAttribute("data-page-number", this.id); div.setAttribute("role", "region"); div.setAttribute("data-l10n-id", "pdfjs-page-landmark"); div.setAttribute("data-l10n-args", JSON.stringify({ page: this.id })); this.div = div; this.#setDimensions(); container?.append(div); } #addLayer(div, name) { const pos = LAYERS_ORDER.get(name); const oldDiv = this.#layers[pos]; this.#layers[pos] = div; if (oldDiv) { oldDiv.replaceWith(div); return; } for (let i = pos - 1; i >= 0; i--) { const layer = this.#layers[i]; if (layer) { layer.after(div); return; } } this.div.prepend(div); } #setDimensions() { const { div, viewport } = this; if (viewport.userUnit !== this.#userUnit) { if (viewport.userUnit !== 1) { div.style.setProperty("--user-unit", viewport.userUnit); } else { div.style.removeProperty("--user-unit"); } this.#userUnit = viewport.userUnit; } if (this.pdfPage) { if (this.#previousRotation === viewport.rotation) { return; } this.#previousRotation = viewport.rotation; } setLayerDimensions(div, viewport, true, false); } setPdfPage(pdfPage) { this.pdfPage = pdfPage; this.pdfPageRotate = pdfPage.rotate; const totalRotation = (this.rotation + this.pdfPageRotate) % 360; this.viewport = pdfPage.getViewport({ scale: this.scale * PixelsPerInch.PDF_TO_CSS_UNITS, rotation: totalRotation }); this.#setDimensions(); this.reset(); } destroy() { this.reset(); this.pdfPage?.cleanup(); } hasEditableAnnotations() { return !!this.annotationLayer?.hasEditableAnnotations(); } get _textHighlighter() { return shadow(this, "_textHighlighter", new TextHighlighter({ pageIndex: this.id - 1, eventBus: this.eventBus, findController: this.#layerProperties.findController })); } #dispatchLayerRendered(name, error) { this.eventBus.dispatch(name, { source: this, pageNumber: this.id, error }); } async #renderAnnotationLayer() { let error = null; try { await this.annotationLayer.render({ viewport: this.viewport, intent: "display", structTreeLayer: this.structTreeLayer }); } catch (ex) { console.error("#renderAnnotationLayer:", ex); error = ex; } finally { this.#dispatchLayerRendered("annotationlayerrendered", error); } } async #renderAnnotationEditorLayer() { let error = null; try { await this.annotationEditorLayer.render({ viewport: this.viewport, intent: "display" }); } catch (ex) { console.error("#renderAnnotationEditorLayer:", ex); error = ex; } finally { this.#dispatchLayerRendered("annotationeditorlayerrendered", error); } } async #renderDrawLayer() { try { await this.drawLayer.render({ intent: "display" }); } catch (ex) { console.error("#renderDrawLayer:", ex); } } async #renderXfaLayer() { let error = null; try { const result = await this.xfaLayer.render({ viewport: this.viewport, intent: "display" }); if (result?.textDivs && this._textHighlighter) { this.#buildXfaTextContentItems(result.textDivs); } } catch (ex) { console.error("#renderXfaLayer:", ex); error = ex; } finally { if (this.xfaLayer?.div) { this.l10n.pause(); this.#addLayer(this.xfaLayer.div, "xfaLayer"); this.l10n.resume(); } this.#dispatchLayerRendered("xfalayerrendered", error); } } async #renderTextLayer() { if (!this.textLayer) { return; } let error = null; try { await this.textLayer.render({ viewport: this.viewport }); } catch (ex) { if (ex instanceof AbortException) { return; } console.error("#renderTextLayer:", ex); error = ex; } this.#dispatchLayerRendered("textlayerrendered", error); this.#renderStructTreeLayer(); } async #renderStructTreeLayer() { if (!this.textLayer) { return; } const treeDom = await this.structTreeLayer?.render(); if (treeDom) { this.l10n.pause(); this.structTreeLayer?.addElementsToTextLayer(); if (this.canvas && treeDom.parentNode !== this.canvas) { this.canvas.append(treeDom); } this.l10n.resume(); } this.structTreeLayer?.show(); } async #buildXfaTextContentItems(textDivs) { const text = await this.pdfPage.getTextContent(); const items = []; for (const item of text.items) { items.push(item.str); } this._textHighlighter.setTextMapping(textDivs, items); this._textHighlighter.enable(); } async #injectLinkAnnotations(textLayerPromise) { let error = null; try { await textLayerPromise; if (!this.annotationLayer) { return; } await this.annotationLayer.injectLinkAnnotations({ inferredLinks: Autolinker.processLinks(this), viewport: this.viewport, structTreeLayer: this.structTreeLayer }); } catch (ex) { console.error("#injectLinkAnnotations:", ex); error = ex; } } _resetCanvas() { super._resetCanvas(); this.#originalViewport = null; } reset({ keepAnnotationLayer = false, keepAnnotationEditorLayer = false, keepXfaLayer = false, keepTextLayer = false, keepCanvasWrapper = false, preserveDetailViewState = false } = {}) { this.cancelRendering({ keepAnnotationLayer, keepAnnotationEditorLayer, keepXfaLayer, keepTextLayer }); this.renderingState = RenderingStates.INITIAL; const div = this.div; const childNodes = div.childNodes, annotationLayerNode = keepAnnotationLayer && this.annotationLayer?.div || null, annotationEditorLayerNode = keepAnnotationEditorLayer && this.annotationEditorLayer?.div || null, xfaLayerNode = keepXfaLayer && this.xfaLayer?.div || null, textLayerNode = keepTextLayer && this.textLayer?.div || null, canvasWrapperNode = keepCanvasWrapper && this.#canvasWrapper || null; for (let i = childNodes.length - 1; i >= 0; i--) { const node = childNodes[i]; switch (node) { case annotationLayerNode: case annotationEditorLayerNode: case xfaLayerNode: case textLayerNode: case canvasWrapperNode: continue; } node.remove(); const layerIndex = this.#layers.indexOf(node); if (layerIndex >= 0) { this.#layers[layerIndex] = null; } } div.removeAttribute("data-loaded"); if (annotationLayerNode) { this.annotationLayer.hide(); } if (annotationEditorLayerNode) { this.annotationEditorLayer.hide(); } if (xfaLayerNode) { this.xfaLayer.hide(); } if (textLayerNode) { this.textLayer.hide(); } this.structTreeLayer?.hide(); if (!keepCanvasWrapper && this.#canvasWrapper) { this.#canvasWrapper = null; this._resetCanvas(); } if (!preserveDetailViewState) { this.detailView?.reset({ keepCanvas: keepCanvasWrapper }); if (!keepCanvasWrapper) { this.detailView = null; } } } toggleEditingMode(isEditing) { this.#isEditing = isEditing; if (!this.hasEditableAnnotations()) { return; } this.reset({ keepAnnotationLayer: true, keepAnnotationEditorLayer: true, keepXfaLayer: true, keepTextLayer: true, keepCanvasWrapper: true }); } updateVisibleArea(visibleArea) { if (this.enableDetailCanvas) { if (this.#needsRestrictedScaling && this.maxCanvasPixels > 0 && visibleArea) { this.detailView ??= new PDFPageDetailView({ pageView: this }); this.detailView.update({ visibleArea }); } else if (this.detailView) { this.detailView.reset(); this.detailView = null; } } } update({ scale = 0, rotation = null, optionalContentConfigPromise = null, drawingDelay = -1 }) { this.scale = scale || this.scale; if (typeof rotation === "number") { this.rotation = rotation; } if (optionalContentConfigPromise instanceof Promise) { this._optionalContentConfigPromise = optionalContentConfigPromise; optionalContentConfigPromise.then(optionalContentConfig => { if (optionalContentConfigPromise !== this._optionalContentConfigPromise) { return; } this.#useThumbnailCanvas.initialOptionalContent = optionalContentConfig.hasInitialVisibility; }); } this.#useThumbnailCanvas.directDrawing = true; const totalRotation = (this.rotation + this.pdfPageRotate) % 360; this.viewport = this.viewport.clone({ scale: this.scale * PixelsPerInch.PDF_TO_CSS_UNITS, rotation: totalRotation }); this.#setDimensions(); this.#computeScale(); if (this.canvas) { const onlyCssZoom = this.#hasRestrictedScaling && this.#needsRestrictedScaling; const postponeDrawing = drawingDelay >= 0 && drawingDelay < 1000; if (postponeDrawing || onlyCssZoom) { if (postponeDrawing && !onlyCssZoom && this.renderingState !== RenderingStates.FINISHED) { this.cancelRendering({ keepAnnotationLayer: true, keepAnnotationEditorLayer: true, keepXfaLayer: true, keepTextLayer: true, cancelExtraDelay: drawingDelay }); this.renderingState = RenderingStates.FINISHED; this.#useThumbnailCanvas.directDrawing = false; } this.cssTransform({ redrawAnnotationLayer: true, redrawAnnotationEditorLayer: true, redrawXfaLayer: true, redrawTextLayer: !postponeDrawing, hideTextLayer: postponeDrawing }); if (!postponeDrawing) { this.detailView?.update({ underlyingViewUpdated: true }); this.dispatchPageRendered(true, false); } return; } } this.cssTransform({}); this.reset({ keepAnnotationLayer: true, keepAnnotationEditorLayer: true, keepXfaLayer: true, keepTextLayer: true, keepCanvasWrapper: true, preserveDetailViewState: true }); this.detailView?.update({ underlyingViewUpdated: true }); } #computeScale() { const { width, height } = this.viewport; const outputScale = this.outputScale = new OutputScale(); this.#needsRestrictedScaling = outputScale.limitCanvas(width, height, this.maxCanvasPixels, this.maxCanvasDim, this.capCanvasAreaFactor); } cancelRendering({ keepAnnotationLayer = false, keepAnnotationEditorLayer = false, keepXfaLayer = false, keepTextLayer = false, cancelExtraDelay = 0 } = {}) { super.cancelRendering({ cancelExtraDelay }); if (this.textLayer && (!keepTextLayer || !this.textLayer.div)) { this.textLayer.cancel(); this.textLayer = null; } if (this.annotationLayer && (!keepAnnotationLayer || !this.annotationLayer.div)) { this.annotationLayer.cancel(); this.annotationLayer = null; this._annotationCanvasMap = null; } if (this.structTreeLayer && !this.textLayer) { this.structTreeLayer = null; } if (this.annotationEditorLayer && (!keepAnnotationEditorLayer || !this.annotationEditorLayer.div)) { if (this.drawLayer) { this.drawLayer.cancel(); this.drawLayer = null; } this.annotationEditorLayer.cancel(); this.annotationEditorLayer = null; } if (this.xfaLayer && (!keepXfaLayer || !this.xfaLayer.div)) { this.xfaLayer.cancel(); this.xfaLayer = null; this._textHighlighter?.disable(); } } cssTransform({ redrawAnnotationLayer = false, redrawAnnotationEditorLayer = false, redrawXfaLayer = false, redrawTextLayer = false, hideTextLayer = false }) { const { canvas } = this; if (!canvas) { return; } const originalViewport = this.#originalViewport; if (this.viewport !== originalViewport) { const relativeRotation = (360 + this.viewport.rotation - originalViewport.rotation) % 360; if (relativeRotation === 90 || relativeRotation === 270) { const { width, height } = this.viewport; const scaleX = height / width; const scaleY = width / height; canvas.style.transform = `rotate(${relativeRotation}deg) scale(${scaleX},${scaleY})`; } else { canvas.style.transform = relativeRotation === 0 ? "" : `rotate(${relativeRotation}deg)`; } } if (redrawAnnotationLayer && this.annotationLayer) { this.#renderAnnotationLayer(); } if (redrawAnnotationEditorLayer && this.annotationEditorLayer) { if (this.drawLayer) { this.#renderDrawLayer(); } this.#renderAnnotationEditorLayer(); } if (redrawXfaLayer && this.xfaLayer) { this.#renderXfaLayer(); } if (this.textLayer) { if (hideTextLayer) { this.textLayer.hide(); this.structTreeLayer?.hide(); } else if (redrawTextLayer) { this.#renderTextLayer(); } } } get width() { return this.viewport.width; } get height() { return this.viewport.height; } getPagePoint(x, y) { return this.viewport.convertToPdfPoint(x, y); } _ensureCanvasWrapper() { let canvasWrapper = this.#canvasWrapper; if (!canvasWrapper) { canvasWrapper = this.#canvasWrapper = document.createElement("div"); canvasWrapper.classList.add("canvasWrapper"); this.#addLayer(canvasWrapper, "canvasWrapper"); } return canvasWrapper; } _getRenderingContext(canvasContext, transform) { return { canvasContext, transform, viewport: this.viewport, annotationMode: this.#annotationMode, optionalContentConfigPromise: this._optionalContentConfigPromise, annotationCanvasMap: this._annotationCanvasMap, pageColors: this.pageColors, isEditing: this.#isEditing }; } async draw() { if (this.renderingState !== RenderingStates.INITIAL) { console.error("Must be in new state before drawing"); this.reset(); } const { div, l10n, pdfPage, viewport } = this; if (!pdfPage) { this.renderingState = RenderingStates.FINISHED; throw new Error("pdfPage is not loaded"); } this.renderingState = RenderingStates.RUNNING; const canvasWrapper = this._ensureCanvasWrapper(); if (!this.textLayer && this.#textLayerMode !== TextLayerMode.DISABLE && !pdfPage.isPureXfa) { this._accessibilityManager ||= new TextAccessibilityManager(); this.textLayer = new TextLayerBuilder({ pdfPage, highlighter: this._textHighlighter, accessibilityManager: this._accessibilityManager, enablePermissions: this.#textLayerMode === TextLayerMode.ENABLE_PERMISSIONS, onAppend: textLayerDiv => { this.l10n.pause(); this.#addLayer(textLayerDiv, "textLayer"); this.l10n.resume(); } }); } if (!this.annotationLayer && this.#annotationMode !== AnnotationMode.DISABLE) { const { annotationStorage, annotationEditorUIManager, downloadManager, enableScripting, fieldObjectsPromise, hasJSActionsPromise, linkService } = this.#layerProperties; this._annotationCanvasMap ||= new Map(); this.annotationLayer = new AnnotationLayerBuilder({ pdfPage, annotationStorage, imageResourcesPath: this.imageResourcesPath, renderForms: this.#annotationMode === AnnotationMode.ENABLE_FORMS, linkService, downloadManager, enableScripting, hasJSActionsPromise, fieldObjectsPromise, annotationCanvasMap: this._annotationCanvasMap, accessibilityManager: this._accessibilityManager, annotationEditorUIManager, onAppend: annotationLayerDiv => { this.#addLayer(annotationLayerDiv, "annotationLayer"); } }); } const { width, height } = viewport; this.#originalViewport = viewport; const { canvas, prevCanvas, ctx } = this._createCanvas(newCanvas => { canvasWrapper.prepend(newCanvas); }); canvas.setAttribute("role", "presentation"); if (!this.outputScale) { this.#computeScale(); } const { outputScale } = this; this.#hasRestrictedScaling = this.#needsRestrictedScaling; const sfx = approximateFraction(outputScale.sx); const sfy = approximateFraction(outputScale.sy); const canvasWidth = canvas.width = floorToDivide(calcRound(width * outputScale.sx), sfx[0]); const canvasHeight = canvas.height = floorToDivide(calcRound(height * outputScale.sy), sfy[0]); const pageWidth = floorToDivide(calcRound(width), sfx[1]); const pageHeight = floorToDivide(calcRound(height), sfy[1]); outputScale.sx = canvasWidth / pageWidth; outputScale.sy = canvasHeight / pageHeight; if (this.#scaleRoundX !== sfx[1]) { div.style.setProperty("--scale-round-x", `${sfx[1]}px`); this.#scaleRoundX = sfx[1]; } if (this.#scaleRoundY !== sfy[1]) { div.style.setProperty("--scale-round-y", `${sfy[1]}px`); this.#scaleRoundY = sfy[1]; } const transform = outputScale.scaled ? [outputScale.sx, 0, 0, outputScale.sy, 0, 0] : null; const resultPromise = this._drawCanvas(this._getRenderingContext(ctx, transform), () => { prevCanvas?.remove(); this._resetCanvas(); }, renderTask => { this.#useThumbnailCanvas.regularAnnotations = !renderTask.separateAnnots; this.dispatchPageRendered(false, false); }).then(async () => { this.structTreeLayer ||= new StructTreeLayerBuilder(pdfPage, viewport.rawDims); const textLayerPromise = this.#renderTextLayer(); if (this.annotationLayer) { await this.#renderAnnotationLayer(); if (this.#enableAutoLinking && this.annotationLayer && this.textLayer) { await this.#injectLinkAnnotations(textLayerPromise); } } const { annotationEditorUIManager } = this.#layerProperties; if (!annotationEditorUIManager) { return; } this.drawLayer ||= new DrawLayerBuilder({ pageIndex: this.id }); await this.#renderDrawLayer(); this.drawLayer.setParent(canvasWrapper); this.annotationEditorLayer ||= new AnnotationEditorLayerBuilder({ uiManager: annotationEditorUIManager, pdfPage, l10n, structTreeLayer: this.structTreeLayer, accessibilityManager: this._accessibilityManager, annotationLayer: this.annotationLayer?.annotationLayer, textLayer: this.textLayer, drawLayer: this.drawLayer.getDrawLayer(), onAppend: annotationEditorLayerDiv => { this.#addLayer(annotationEditorLayerDiv, "annotationEditorLayer"); } }); this.#renderAnnotationEditorLayer(); }); if (pdfPage.isPureXfa) { if (!this.xfaLayer) { const { annotationStorage, linkService } = this.#layerProperties; this.xfaLayer = new XfaLayerBuilder({ pdfPage, annotationStorage, linkService }); } this.#renderXfaLayer(); } div.setAttribute("data-loaded", true); this.dispatchPageRender(); return resultPromise; } setPageLabel(label) { this.pageLabel = typeof label === "string" ? label : null; this.div.setAttribute("data-l10n-args", JSON.stringify({ page: this.pageLabel ?? this.id })); if (this.pageLabel !== null) { this.div.setAttribute("data-page-label", this.pageLabel); } else { this.div.removeAttribute("data-page-label"); } } get thumbnailCanvas() { const { directDrawing, initialOptionalContent, regularAnnotations } = this.#useThumbnailCanvas; return directDrawing && initialOptionalContent && regularAnnotations ? this.canvas : null; } } ;// ./web/pdf_viewer.js const DEFAULT_CACHE_SIZE = 10; const PagesCountLimit = { FORCE_SCROLL_MODE_PAGE: 10000, FORCE_LAZY_PAGE_INIT: 5000, PAUSE_EAGER_PAGE_INIT: 250 }; function isValidAnnotationEditorMode(mode) { return Object.values(AnnotationEditorType).includes(mode) && mode !== AnnotationEditorType.DISABLE; } class PDFPageViewBuffer { #buf = new Set(); #size = 0; constructor(size) { this.#size = size; } push(view) { const buf = this.#buf; if (buf.has(view)) { buf.delete(view); } buf.add(view); if (buf.size > this.#size) { this.#destroyFirstView(); } } resize(newSize, idsToKeep = null) { this.#size = newSize; const buf = this.#buf; if (idsToKeep) { const ii = buf.size; let i = 1; for (const view of buf) { if (idsToKeep.has(view.id)) { buf.delete(view); buf.add(view); } if (++i > ii) { break; } } } while (buf.size > this.#size) { this.#destroyFirstView(); } } has(view) { return this.#buf.has(view); } [Symbol.iterator]() { return this.#buf.keys(); } #destroyFirstView() { const firstView = this.#buf.keys().next().value; firstView?.destroy(); this.#buf.delete(firstView); } } class PDFViewer { #buffer = null; #altTextManager = null; #annotationEditorHighlightColors = null; #annotationEditorMode = AnnotationEditorType.NONE; #annotationEditorUIManager = null; #annotationMode = AnnotationMode.ENABLE_FORMS; #containerTopLeft = null; #editorUndoBar = null; #enableHWA = false; #enableHighlightFloatingButton = false; #enablePermissions = false; #enableUpdatedAddImage = false; #enableNewAltTextWhenAddingImage = false; #enableAutoLinking = true; #eventAbortController = null; #minDurationToUpdateCanvas = 0; #mlManager = null; #scrollTimeoutId = null; #switchAnnotationEditorModeAC = null; #switchAnnotationEditorModeTimeoutId = null; #getAllTextInProgress = false; #hiddenCopyElement = null; #interruptCopyCondition = false; #previousContainerHeight = 0; #resizeObserver = new ResizeObserver(this.#resizeObserverCallback.bind(this)); #scrollModePageState = null; #scaleTimeoutId = null; #signatureManager = null; #supportsPinchToZoom = true; #textLayerMode = TextLayerMode.ENABLE; constructor(options) { const viewerVersion = "5.2.183"; if (version !== viewerVersion) { throw new Error(`The API version "${version}" does not match the Viewer version "${viewerVersion}".`); } this.container = options.container; this.viewer = options.viewer || options.container.firstElementChild; this.#resizeObserver.observe(this.container); this.eventBus = options.eventBus; this.linkService = options.linkService || new SimpleLinkService(); this.downloadManager = options.downloadManager || null; this.findController = options.findController || null; this.#altTextManager = options.altTextManager || null; this.#signatureManager = options.signatureManager || null; this.#editorUndoBar = options.editorUndoBar || null; if (this.findController) { this.findController.onIsPageVisible = pageNumber => this._getVisiblePages().ids.has(pageNumber); } this._scriptingManager = options.scriptingManager || null; this.#textLayerMode = options.textLayerMode ?? TextLayerMode.ENABLE; this.#annotationMode = options.annotationMode ?? AnnotationMode.ENABLE_FORMS; this.#annotationEditorMode = options.annotationEditorMode ?? AnnotationEditorType.NONE; this.#annotationEditorHighlightColors = options.annotationEditorHighlightColors || null; this.#enableHighlightFloatingButton = options.enableHighlightFloatingButton === true; this.#enableUpdatedAddImage = options.enableUpdatedAddImage === true; this.#enableNewAltTextWhenAddingImage = options.enableNewAltTextWhenAddingImage === true; this.imageResourcesPath = options.imageResourcesPath || ""; this.enablePrintAutoRotate = options.enablePrintAutoRotate || false; this.maxCanvasPixels = options.maxCanvasPixels; this.maxCanvasDim = options.maxCanvasDim; this.capCanvasAreaFactor = options.capCanvasAreaFactor; this.enableDetailCanvas = options.enableDetailCanvas ?? true; this.l10n = options.l10n; this.#enablePermissions = options.enablePermissions || false; this.pageColors = options.pageColors || null; this.#mlManager = options.mlManager || null; this.#enableHWA = options.enableHWA || false; this.#supportsPinchToZoom = options.supportsPinchToZoom !== false; this.#enableAutoLinking = options.enableAutoLinking !== false; this.#minDurationToUpdateCanvas = options.minDurationToUpdateCanvas ?? 500; this.defaultRenderingQueue = !options.renderingQueue; this.renderingQueue = options.renderingQueue; const { abortSignal } = options; abortSignal?.addEventListener("abort", () => { this.#resizeObserver.disconnect(); this.#resizeObserver = null; }, { once: true }); this.scroll = watchScroll(this.container, this._scrollUpdate.bind(this), abortSignal); this.presentationModeState = PresentationModeState.UNKNOWN; this._resetView(); this.#updateContainerHeightCss(); this.eventBus._on("thumbnailrendered", ({ pageNumber, pdfPage }) => { const pageView = this._pages[pageNumber - 1]; if (!this.#buffer.has(pageView)) { pdfPage?.cleanup(); } }); } get pagesCount() { return this._pages.length; } getPageView(index) { return this._pages[index]; } getCachedPageViews() { return new Set(this.#buffer); } get pageViewsReady() { return this._pages.every(pageView => pageView?.pdfPage); } get renderForms() { return this.#annotationMode === AnnotationMode.ENABLE_FORMS; } get enableScripting() { return !!this._scriptingManager; } get currentPageNumber() { return this._currentPageNumber; } set currentPageNumber(val) { if (!Number.isInteger(val)) { throw new Error("Invalid page number."); } if (!this.pdfDocument) { return; } if (!this._setCurrentPageNumber(val, true)) { console.error(`currentPageNumber: "${val}" is not a valid page.`); } } _setCurrentPageNumber(val, resetCurrentPageView = false) { if (this._currentPageNumber === val) { if (resetCurrentPageView) { this.#resetCurrentPageView(); } return true; } if (!(0 < val && val <= this.pagesCount)) { return false; } const previous = this._currentPageNumber; this._currentPageNumber = val; this.eventBus.dispatch("pagechanging", { source: this, pageNumber: val, pageLabel: this._pageLabels?.[val - 1] ?? null, previous }); if (resetCurrentPageView) { this.#resetCurrentPageView(); } return true; } get currentPageLabel() { return this._pageLabels?.[this._currentPageNumber - 1] ?? null; } set currentPageLabel(val) { if (!this.pdfDocument) { return; } let page = val | 0; if (this._pageLabels) { const i = this._pageLabels.indexOf(val); if (i >= 0) { page = i + 1; } } if (!this._setCurrentPageNumber(page, true)) { console.error(`currentPageLabel: "${val}" is not a valid page.`); } } get currentScale() { return this._currentScale !== UNKNOWN_SCALE ? this._currentScale : DEFAULT_SCALE; } set currentScale(val) { if (isNaN(val)) { throw new Error("Invalid numeric scale."); } if (!this.pdfDocument) { return; } this.#setScale(val, { noScroll: false }); } get currentScaleValue() { return this._currentScaleValue; } set currentScaleValue(val) { if (!this.pdfDocument) { return; } this.#setScale(val, { noScroll: false }); } get pagesRotation() { return this._pagesRotation; } set pagesRotation(rotation) { if (!isValidRotation(rotation)) { throw new Error("Invalid pages rotation angle."); } if (!this.pdfDocument) { return; } rotation %= 360; if (rotation < 0) { rotation += 360; } if (this._pagesRotation === rotation) { return; } this._pagesRotation = rotation; const pageNumber = this._currentPageNumber; this.refresh(true, { rotation }); if (this._currentScaleValue) { this.#setScale(this._currentScaleValue, { noScroll: true }); } this.eventBus.dispatch("rotationchanging", { source: this, pagesRotation: rotation, pageNumber }); if (this.defaultRenderingQueue) { this.update(); } } get firstPagePromise() { return this.pdfDocument ? this._firstPageCapability.promise : null; } get onePageRendered() { return this.pdfDocument ? this._onePageRenderedCapability.promise : null; } get pagesPromise() { return this.pdfDocument ? this._pagesCapability.promise : null; } get _layerProperties() { const self = this; return shadow(this, "_layerProperties", { get annotationEditorUIManager() { return self.#annotationEditorUIManager; }, get annotationStorage() { return self.pdfDocument?.annotationStorage; }, get downloadManager() { return self.downloadManager; }, get enableScripting() { return !!self._scriptingManager; }, get fieldObjectsPromise() { return self.pdfDocument?.getFieldObjects(); }, get findController() { return self.findController; }, get hasJSActionsPromise() { return self.pdfDocument?.hasJSActions(); }, get linkService() { return self.linkService; } }); } #initializePermissions(permissions) { const params = { annotationEditorMode: this.#annotationEditorMode, annotationMode: this.#annotationMode, textLayerMode: this.#textLayerMode }; if (!permissions) { return params; } if (!permissions.includes(PermissionFlag.COPY) && this.#textLayerMode === TextLayerMode.ENABLE) { params.textLayerMode = TextLayerMode.ENABLE_PERMISSIONS; } if (!permissions.includes(PermissionFlag.MODIFY_CONTENTS)) { params.annotationEditorMode = AnnotationEditorType.DISABLE; } if (!permissions.includes(PermissionFlag.MODIFY_ANNOTATIONS) && !permissions.includes(PermissionFlag.FILL_INTERACTIVE_FORMS) && this.#annotationMode === AnnotationMode.ENABLE_FORMS) { params.annotationMode = AnnotationMode.ENABLE; } return params; } async #onePageRenderedOrForceFetch(signal) { if (document.visibilityState === "hidden" || !this.container.offsetParent || this._getVisiblePages().views.length === 0) { return; } const hiddenCapability = Promise.withResolvers(), ac = new AbortController(); document.addEventListener("visibilitychange", () => { if (document.visibilityState === "hidden") { hiddenCapability.resolve(); } }, { signal: AbortSignal.any([signal, ac.signal]) }); await Promise.race([this._onePageRenderedCapability.promise, hiddenCapability.promise]); ac.abort(); } async getAllText() { const texts = []; const buffer = []; for (let pageNum = 1, pagesCount = this.pdfDocument.numPages; pageNum <= pagesCount; ++pageNum) { if (this.#interruptCopyCondition) { return null; } buffer.length = 0; const page = await this.pdfDocument.getPage(pageNum); const { items } = await page.getTextContent(); for (const item of items) { if (item.str) { buffer.push(item.str); } if (item.hasEOL) { buffer.push("\n"); } } texts.push(removeNullCharacters(buffer.join(""))); } return texts.join("\n"); } #copyCallback(textLayerMode, event) { const selection = document.getSelection(); const { focusNode, anchorNode } = selection; if (anchorNode && focusNode && selection.containsNode(this.#hiddenCopyElement)) { if (this.#getAllTextInProgress || textLayerMode === TextLayerMode.ENABLE_PERMISSIONS) { stopEvent(event); return; } this.#getAllTextInProgress = true; const { classList } = this.viewer; classList.add("copyAll"); const ac = new AbortController(); window.addEventListener("keydown", ev => this.#interruptCopyCondition = ev.key === "Escape", { signal: ac.signal }); this.getAllText().then(async text => { if (text !== null) { await navigator.clipboard.writeText(text); } }).catch(reason => { console.warn(`Something goes wrong when extracting the text: ${reason.message}`); }).finally(() => { this.#getAllTextInProgress = false; this.#interruptCopyCondition = false; ac.abort(); classList.remove("copyAll"); }); stopEvent(event); } } setDocument(pdfDocument) { if (this.pdfDocument) { this.eventBus.dispatch("pagesdestroy", { source: this }); this._cancelRendering(); this._resetView(); this.findController?.setDocument(null); this._scriptingManager?.setDocument(null); this.#annotationEditorUIManager?.destroy(); this.#annotationEditorUIManager = null; } this.pdfDocument = pdfDocument; if (!pdfDocument) { return; } const pagesCount = pdfDocument.numPages; const firstPagePromise = pdfDocument.getPage(1); const optionalContentConfigPromise = pdfDocument.getOptionalContentConfig({ intent: "display" }); const permissionsPromise = this.#enablePermissions ? pdfDocument.getPermissions() : Promise.resolve(); const { eventBus, pageColors, viewer } = this; this.#eventAbortController = new AbortController(); const { signal } = this.#eventAbortController; if (pagesCount > PagesCountLimit.FORCE_SCROLL_MODE_PAGE) { console.warn("Forcing PAGE-scrolling for performance reasons, given the length of the document."); const mode = this._scrollMode = ScrollMode.PAGE; eventBus.dispatch("scrollmodechanged", { source: this, mode }); } this._pagesCapability.promise.then(() => { eventBus.dispatch("pagesloaded", { source: this, pagesCount }); }, () => {}); const onBeforeDraw = evt => { const pageView = this._pages[evt.pageNumber - 1]; if (!pageView) { return; } this.#buffer.push(pageView); }; eventBus._on("pagerender", onBeforeDraw, { signal }); const onAfterDraw = evt => { if (evt.cssTransform || evt.isDetailView) { return; } this._onePageRenderedCapability.resolve({ timestamp: evt.timestamp }); eventBus._off("pagerendered", onAfterDraw); }; eventBus._on("pagerendered", onAfterDraw, { signal }); Promise.all([firstPagePromise, permissionsPromise]).then(([firstPdfPage, permissions]) => { if (pdfDocument !== this.pdfDocument) { return; } this._firstPageCapability.resolve(firstPdfPage); this._optionalContentConfigPromise = optionalContentConfigPromise; const { annotationEditorMode, annotationMode, textLayerMode } = this.#initializePermissions(permissions); if (textLayerMode !== TextLayerMode.DISABLE) { const element = this.#hiddenCopyElement = document.createElement("div"); element.id = "hiddenCopyElement"; viewer.before(element); } if (annotationEditorMode !== AnnotationEditorType.DISABLE) { const mode = annotationEditorMode; if (pdfDocument.isPureXfa) { console.warn("Warning: XFA-editing is not implemented."); } else if (isValidAnnotationEditorMode(mode)) { this.#annotationEditorUIManager = new AnnotationEditorUIManager(this.container, viewer, this.#altTextManager, this.#signatureManager, eventBus, pdfDocument, pageColors, this.#annotationEditorHighlightColors, this.#enableHighlightFloatingButton, this.#enableUpdatedAddImage, this.#enableNewAltTextWhenAddingImage, this.#mlManager, this.#editorUndoBar, this.#supportsPinchToZoom); eventBus.dispatch("annotationeditoruimanager", { source: this, uiManager: this.#annotationEditorUIManager }); if (mode !== AnnotationEditorType.NONE) { this.#preloadEditingData(mode); this.#annotationEditorUIManager.updateMode(mode); } } else { console.error(`Invalid AnnotationEditor mode: ${mode}`); } } const viewerElement = this._scrollMode === ScrollMode.PAGE ? null : viewer; const scale = this.currentScale; const viewport = firstPdfPage.getViewport({ scale: scale * PixelsPerInch.PDF_TO_CSS_UNITS }); viewer.style.setProperty("--scale-factor", viewport.scale); if (pageColors?.background) { viewer.style.setProperty("--page-bg-color", pageColors.background); } if (pageColors?.foreground === "CanvasText" || pageColors?.background === "Canvas") { viewer.style.setProperty("--hcm-highlight-filter", pdfDocument.filterFactory.addHighlightHCMFilter("highlight", "CanvasText", "Canvas", "HighlightText", "Highlight")); viewer.style.setProperty("--hcm-highlight-selected-filter", pdfDocument.filterFactory.addHighlightHCMFilter("highlight_selected", "CanvasText", "Canvas", "HighlightText", "ButtonText")); } for (let pageNum = 1; pageNum <= pagesCount; ++pageNum) { const pageView = new PDFPageView({ container: viewerElement, eventBus, id: pageNum, scale, defaultViewport: viewport.clone(), optionalContentConfigPromise, renderingQueue: this.renderingQueue, textLayerMode, annotationMode, imageResourcesPath: this.imageResourcesPath, maxCanvasPixels: this.maxCanvasPixels, maxCanvasDim: this.maxCanvasDim, capCanvasAreaFactor: this.capCanvasAreaFactor, enableDetailCanvas: this.enableDetailCanvas, pageColors, l10n: this.l10n, layerProperties: this._layerProperties, enableHWA: this.#enableHWA, enableAutoLinking: this.#enableAutoLinking, minDurationToUpdateCanvas: this.#minDurationToUpdateCanvas }); this._pages.push(pageView); } this._pages[0]?.setPdfPage(firstPdfPage); if (this._scrollMode === ScrollMode.PAGE) { this.#ensurePageViewVisible(); } else if (this._spreadMode !== SpreadMode.NONE) { this._updateSpreadMode(); } this.#onePageRenderedOrForceFetch(signal).then(async () => { if (pdfDocument !== this.pdfDocument) { return; } this.findController?.setDocument(pdfDocument); this._scriptingManager?.setDocument(pdfDocument); if (this.#hiddenCopyElement) { document.addEventListener("copy", this.#copyCallback.bind(this, textLayerMode), { signal }); } if (this.#annotationEditorUIManager) { eventBus.dispatch("annotationeditormodechanged", { source: this, mode: this.#annotationEditorMode }); } if (pdfDocument.loadingParams.disableAutoFetch || pagesCount > PagesCountLimit.FORCE_LAZY_PAGE_INIT) { this._pagesCapability.resolve(); return; } let getPagesLeft = pagesCount - 1; if (getPagesLeft <= 0) { this._pagesCapability.resolve(); return; } for (let pageNum = 2; pageNum <= pagesCount; ++pageNum) { const promise = pdfDocument.getPage(pageNum).then(pdfPage => { const pageView = this._pages[pageNum - 1]; if (!pageView.pdfPage) { pageView.setPdfPage(pdfPage); } if (--getPagesLeft === 0) { this._pagesCapability.resolve(); } }, reason => { console.error(`Unable to get page ${pageNum} to initialize viewer`, reason); if (--getPagesLeft === 0) { this._pagesCapability.resolve(); } }); if (pageNum % PagesCountLimit.PAUSE_EAGER_PAGE_INIT === 0) { await promise; } } }); eventBus.dispatch("pagesinit", { source: this }); pdfDocument.getMetadata().then(({ info }) => { if (pdfDocument !== this.pdfDocument) { return; } if (info.Language) { viewer.lang = info.Language; } }); if (this.defaultRenderingQueue) { this.update(); } }).catch(reason => { console.error("Unable to initialize viewer", reason); this._pagesCapability.reject(reason); }); } setPageLabels(labels) { if (!this.pdfDocument) { return; } if (!labels) { this._pageLabels = null; } else if (!(Array.isArray(labels) && this.pdfDocument.numPages === labels.length)) { this._pageLabels = null; console.error(`setPageLabels: Invalid page labels.`); } else { this._pageLabels = labels; } for (let i = 0, ii = this._pages.length; i < ii; i++) { this._pages[i].setPageLabel(this._pageLabels?.[i] ?? null); } } _resetView() { this._pages = []; this._currentPageNumber = 1; this._currentScale = UNKNOWN_SCALE; this._currentScaleValue = null; this._pageLabels = null; this.#buffer = new PDFPageViewBuffer(DEFAULT_CACHE_SIZE); this._location = null; this._pagesRotation = 0; this._optionalContentConfigPromise = null; this._firstPageCapability = Promise.withResolvers(); this._onePageRenderedCapability = Promise.withResolvers(); this._pagesCapability = Promise.withResolvers(); this._scrollMode = ScrollMode.VERTICAL; this._previousScrollMode = ScrollMode.UNKNOWN; this._spreadMode = SpreadMode.NONE; this.#scrollModePageState = { previousPageNumber: 1, scrollDown: true, pages: [] }; this.#eventAbortController?.abort(); this.#eventAbortController = null; this.viewer.textContent = ""; this._updateScrollMode(); this.viewer.removeAttribute("lang"); this.#hiddenCopyElement?.remove(); this.#hiddenCopyElement = null; this.#cleanupTimeouts(); this.#cleanupSwitchAnnotationEditorMode(); } #ensurePageViewVisible() { if (this._scrollMode !== ScrollMode.PAGE) { throw new Error("#ensurePageViewVisible: Invalid scrollMode value."); } const pageNumber = this._currentPageNumber, state = this.#scrollModePageState, viewer = this.viewer; viewer.textContent = ""; state.pages.length = 0; if (this._spreadMode === SpreadMode.NONE && !this.isInPresentationMode) { const pageView = this._pages[pageNumber - 1]; viewer.append(pageView.div); state.pages.push(pageView); } else { const pageIndexSet = new Set(), parity = this._spreadMode - 1; if (parity === -1) { pageIndexSet.add(pageNumber - 1); } else if (pageNumber % 2 !== parity) { pageIndexSet.add(pageNumber - 1); pageIndexSet.add(pageNumber); } else { pageIndexSet.add(pageNumber - 2); pageIndexSet.add(pageNumber - 1); } const spread = document.createElement("div"); spread.className = "spread"; if (this.isInPresentationMode) { const dummyPage = document.createElement("div"); dummyPage.className = "dummyPage"; spread.append(dummyPage); } for (const i of pageIndexSet) { const pageView = this._pages[i]; if (!pageView) { continue; } spread.append(pageView.div); state.pages.push(pageView); } viewer.append(spread); } state.scrollDown = pageNumber >= state.previousPageNumber; state.previousPageNumber = pageNumber; } _scrollUpdate() { if (this.pagesCount === 0) { return; } if (this.#scrollTimeoutId) { clearTimeout(this.#scrollTimeoutId); } this.#scrollTimeoutId = setTimeout(() => { this.#scrollTimeoutId = null; this.update(); }, 100); this.update(); } #scrollIntoView(pageView, pageSpot = null) { const { div, id } = pageView; if (this._currentPageNumber !== id) { this._setCurrentPageNumber(id); } if (this._scrollMode === ScrollMode.PAGE) { this.#ensurePageViewVisible(); this.update(); } if (!pageSpot && !this.isInPresentationMode) { const left = div.offsetLeft + div.clientLeft, right = left + div.clientWidth; const { scrollLeft, clientWidth } = this.container; if (this._scrollMode === ScrollMode.HORIZONTAL || left < scrollLeft || right > scrollLeft + clientWidth) { pageSpot = { left: 0, top: 0 }; } } scrollIntoView(div, pageSpot); if (!this._currentScaleValue && this._location) { this._location = null; } } #isSameScale(newScale) { return newScale === this._currentScale || Math.abs(newScale - this._currentScale) < 1e-15; } #setScaleUpdatePages(newScale, newValue, { noScroll = false, preset = false, drawingDelay = -1, origin = null }) { this._currentScaleValue = newValue.toString(); if (this.#isSameScale(newScale)) { if (preset) { this.eventBus.dispatch("scalechanging", { source: this, scale: newScale, presetValue: newValue }); } return; } this.viewer.style.setProperty("--scale-factor", newScale * PixelsPerInch.PDF_TO_CSS_UNITS); const postponeDrawing = drawingDelay >= 0 && drawingDelay < 1000; this.refresh(true, { scale: newScale, drawingDelay: postponeDrawing ? drawingDelay : -1 }); if (postponeDrawing) { this.#scaleTimeoutId = setTimeout(() => { this.#scaleTimeoutId = null; this.refresh(); }, drawingDelay); } const previousScale = this._currentScale; this._currentScale = newScale; if (!noScroll) { let page = this._currentPageNumber, dest; if (this._location && !(this.isInPresentationMode || this.isChangingPresentationMode)) { page = this._location.pageNumber; dest = [null, { name: "XYZ" }, this._location.left, this._location.top, null]; } this.scrollPageIntoView({ pageNumber: page, destArray: dest, allowNegativeOffset: true }); if (Array.isArray(origin)) { const scaleDiff = newScale / previousScale - 1; const [top, left] = this.containerTopLeft; this.container.scrollLeft += (origin[0] - left) * scaleDiff; this.container.scrollTop += (origin[1] - top) * scaleDiff; } } this.eventBus.dispatch("scalechanging", { source: this, scale: newScale, presetValue: preset ? newValue : undefined }); if (this.defaultRenderingQueue) { this.update(); } } get #pageWidthScaleFactor() { if (this._spreadMode !== SpreadMode.NONE && this._scrollMode !== ScrollMode.HORIZONTAL) { return 2; } return 1; } #setScale(value, options) { let scale = parseFloat(value); if (scale > 0) { options.preset = false; this.#setScaleUpdatePages(scale, value, options); } else { const currentPage = this._pages[this._currentPageNumber - 1]; if (!currentPage) { return; } let hPadding = SCROLLBAR_PADDING, vPadding = VERTICAL_PADDING; if (this.isInPresentationMode) { hPadding = vPadding = 4; if (this._spreadMode !== SpreadMode.NONE) { hPadding *= 2; } } else if (this._scrollMode === ScrollMode.HORIZONTAL) { [hPadding, vPadding] = [vPadding, hPadding]; } const pageWidthScale = (this.container.clientWidth - hPadding) / currentPage.width * currentPage.scale / this.#pageWidthScaleFactor; const pageHeightScale = (this.container.clientHeight - vPadding) / currentPage.height * currentPage.scale; switch (value) { case "page-actual": scale = 1; break; case "page-width": scale = pageWidthScale; break; case "page-height": scale = pageHeightScale; break; case "page-fit": scale = Math.min(pageWidthScale, pageHeightScale); break; case "auto": const horizontalScale = isPortraitOrientation(currentPage) ? pageWidthScale : Math.min(pageHeightScale, pageWidthScale); scale = Math.min(MAX_AUTO_SCALE, horizontalScale); break; default: console.error(`#setScale: "${value}" is an unknown zoom value.`); return; } options.preset = true; this.#setScaleUpdatePages(scale, value, options); } } #resetCurrentPageView() { const pageView = this._pages[this._currentPageNumber - 1]; if (this.isInPresentationMode) { this.#setScale(this._currentScaleValue, { noScroll: true }); } this.#scrollIntoView(pageView); } pageLabelToPageNumber(label) { if (!this._pageLabels) { return null; } const i = this._pageLabels.indexOf(label); if (i < 0) { return null; } return i + 1; } scrollPageIntoView({ pageNumber, destArray = null, allowNegativeOffset = false, ignoreDestinationZoom = false }) { if (!this.pdfDocument) { return; } const pageView = Number.isInteger(pageNumber) && this._pages[pageNumber - 1]; if (!pageView) { console.error(`scrollPageIntoView: "${pageNumber}" is not a valid pageNumber parameter.`); return; } if (this.isInPresentationMode || !destArray) { this._setCurrentPageNumber(pageNumber, true); return; } let x = 0, y = 0; let width = 0, height = 0, widthScale, heightScale; const changeOrientation = pageView.rotation % 180 !== 0; const pageWidth = (changeOrientation ? pageView.height : pageView.width) / pageView.scale / PixelsPerInch.PDF_TO_CSS_UNITS; const pageHeight = (changeOrientation ? pageView.width : pageView.height) / pageView.scale / PixelsPerInch.PDF_TO_CSS_UNITS; let scale = 0; switch (destArray[1].name) { case "XYZ": x = destArray[2]; y = destArray[3]; scale = destArray[4]; x = x !== null ? x : 0; y = y !== null ? y : pageHeight; break; case "Fit": case "FitB": scale = "page-fit"; break; case "FitH": case "FitBH": y = destArray[2]; scale = "page-width"; if (y === null && this._location) { x = this._location.left; y = this._location.top; } else if (typeof y !== "number" || y < 0) { y = pageHeight; } break; case "FitV": case "FitBV": x = destArray[2]; width = pageWidth; height = pageHeight; scale = "page-height"; break; case "FitR": x = destArray[2]; y = destArray[3]; width = destArray[4] - x; height = destArray[5] - y; let hPadding = SCROLLBAR_PADDING, vPadding = VERTICAL_PADDING; widthScale = (this.container.clientWidth - hPadding) / width / PixelsPerInch.PDF_TO_CSS_UNITS; heightScale = (this.container.clientHeight - vPadding) / height / PixelsPerInch.PDF_TO_CSS_UNITS; scale = Math.min(Math.abs(widthScale), Math.abs(heightScale)); break; default: console.error(`scrollPageIntoView: "${destArray[1].name}" is not a valid destination type.`); return; } if (!ignoreDestinationZoom) { if (scale && scale !== this._currentScale) { this.currentScaleValue = scale; } else if (this._currentScale === UNKNOWN_SCALE) { this.currentScaleValue = DEFAULT_SCALE_VALUE; } } if (scale === "page-fit" && !destArray[4]) { this.#scrollIntoView(pageView); return; } const boundingRect = [pageView.viewport.convertToViewportPoint(x, y), pageView.viewport.convertToViewportPoint(x + width, y + height)]; let left = Math.min(boundingRect[0][0], boundingRect[1][0]); let top = Math.min(boundingRect[0][1], boundingRect[1][1]); if (!allowNegativeOffset) { left = Math.max(left, 0); top = Math.max(top, 0); } this.#scrollIntoView(pageView, { left, top }); } _updateLocation(firstPage) { const currentScale = this._currentScale; const currentScaleValue = this._currentScaleValue; const normalizedScaleValue = parseFloat(currentScaleValue) === currentScale ? Math.round(currentScale * 10000) / 100 : currentScaleValue; const pageNumber = firstPage.id; const currentPageView = this._pages[pageNumber - 1]; const container = this.container; const topLeft = currentPageView.getPagePoint(container.scrollLeft - firstPage.x, container.scrollTop - firstPage.y); const intLeft = Math.round(topLeft[0]); const intTop = Math.round(topLeft[1]); let pdfOpenParams = `#page=${pageNumber}`; if (!this.isInPresentationMode) { pdfOpenParams += `&zoom=${normalizedScaleValue},${intLeft},${intTop}`; } this._location = { pageNumber, scale: normalizedScaleValue, top: intTop, left: intLeft, rotation: this._pagesRotation, pdfOpenParams }; } update() { const visible = this._getVisiblePages(); const visiblePages = visible.views, numVisiblePages = visiblePages.length; if (numVisiblePages === 0) { return; } const newCacheSize = Math.max(DEFAULT_CACHE_SIZE, 2 * numVisiblePages + 1); this.#buffer.resize(newCacheSize, visible.ids); for (const { view, visibleArea } of visiblePages) { view.updateVisibleArea(visibleArea); } for (const view of this.#buffer) { if (!visible.ids.has(view.id)) { view.updateVisibleArea(null); } } this.renderingQueue.renderHighestPriority(visible); const isSimpleLayout = this._spreadMode === SpreadMode.NONE && (this._scrollMode === ScrollMode.PAGE || this._scrollMode === ScrollMode.VERTICAL); const currentId = this._currentPageNumber; let stillFullyVisible = false; for (const page of visiblePages) { if (page.percent < 100) { break; } if (page.id === currentId && isSimpleLayout) { stillFullyVisible = true; break; } } this._setCurrentPageNumber(stillFullyVisible ? currentId : visiblePages[0].id); this._updateLocation(visible.first); this.eventBus.dispatch("updateviewarea", { source: this, location: this._location }); } #switchToEditAnnotationMode() { const visible = this._getVisiblePages(); const pagesToRefresh = []; const { ids, views } = visible; for (const page of views) { const { view } = page; if (!view.hasEditableAnnotations()) { ids.delete(view.id); continue; } pagesToRefresh.push(page); } if (pagesToRefresh.length === 0) { return null; } this.renderingQueue.renderHighestPriority({ first: pagesToRefresh[0], last: pagesToRefresh.at(-1), views: pagesToRefresh, ids }); return ids; } containsElement(element) { return this.container.contains(element); } focus() { this.container.focus(); } get _isContainerRtl() { return getComputedStyle(this.container).direction === "rtl"; } get isInPresentationMode() { return this.presentationModeState === PresentationModeState.FULLSCREEN; } get isChangingPresentationMode() { return this.presentationModeState === PresentationModeState.CHANGING; } get isHorizontalScrollbarEnabled() { return this.isInPresentationMode ? false : this.container.scrollWidth > this.container.clientWidth; } get isVerticalScrollbarEnabled() { return this.isInPresentationMode ? false : this.container.scrollHeight > this.container.clientHeight; } _getVisiblePages() { const views = this._scrollMode === ScrollMode.PAGE ? this.#scrollModePageState.pages : this._pages, horizontal = this._scrollMode === ScrollMode.HORIZONTAL, rtl = horizontal && this._isContainerRtl; return getVisibleElements({ scrollEl: this.container, views, sortByVisibility: true, horizontal, rtl }); } cleanup() { for (const pageView of this._pages) { if (pageView.renderingState !== RenderingStates.FINISHED) { pageView.reset(); } } } _cancelRendering() { for (const pageView of this._pages) { pageView.cancelRendering(); } } async #ensurePdfPageLoaded(pageView) { if (pageView.pdfPage) { return pageView.pdfPage; } try { const pdfPage = await this.pdfDocument.getPage(pageView.id); if (!pageView.pdfPage) { pageView.setPdfPage(pdfPage); } return pdfPage; } catch (reason) { console.error("Unable to get page for page view", reason); return null; } } #getScrollAhead(visible) { if (visible.first?.id === 1) { return true; } else if (visible.last?.id === this.pagesCount) { return false; } switch (this._scrollMode) { case ScrollMode.PAGE: return this.#scrollModePageState.scrollDown; case ScrollMode.HORIZONTAL: return this.scroll.right; } return this.scroll.down; } forceRendering(currentlyVisiblePages) { const visiblePages = currentlyVisiblePages || this._getVisiblePages(); const scrollAhead = this.#getScrollAhead(visiblePages); const preRenderExtra = this._spreadMode !== SpreadMode.NONE && this._scrollMode !== ScrollMode.HORIZONTAL; const ignoreDetailViews = this.#scaleTimeoutId !== null || this.#scrollTimeoutId !== null && visiblePages.views.some(page => page.detailView?.renderingCancelled); const pageView = this.renderingQueue.getHighestPriority(visiblePages, this._pages, scrollAhead, preRenderExtra, ignoreDetailViews); if (pageView) { this.#ensurePdfPageLoaded(pageView).then(() => { this.renderingQueue.renderView(pageView); }); return true; } return false; } get hasEqualPageSizes() { const firstPageView = this._pages[0]; for (let i = 1, ii = this._pages.length; i < ii; ++i) { const pageView = this._pages[i]; if (pageView.width !== firstPageView.width || pageView.height !== firstPageView.height) { return false; } } return true; } getPagesOverview() { let initialOrientation; return this._pages.map(pageView => { const viewport = pageView.pdfPage.getViewport({ scale: 1 }); const orientation = isPortraitOrientation(viewport); if (initialOrientation === undefined) { initialOrientation = orientation; } else if (this.enablePrintAutoRotate && orientation !== initialOrientation) { return { width: viewport.height, height: viewport.width, rotation: (viewport.rotation - 90) % 360 }; } return { width: viewport.width, height: viewport.height, rotation: viewport.rotation }; }); } get optionalContentConfigPromise() { if (!this.pdfDocument) { return Promise.resolve(null); } if (!this._optionalContentConfigPromise) { console.error("optionalContentConfigPromise: Not initialized yet."); return this.pdfDocument.getOptionalContentConfig({ intent: "display" }); } return this._optionalContentConfigPromise; } set optionalContentConfigPromise(promise) { if (!(promise instanceof Promise)) { throw new Error(`Invalid optionalContentConfigPromise: ${promise}`); } if (!this.pdfDocument) { return; } if (!this._optionalContentConfigPromise) { return; } this._optionalContentConfigPromise = promise; this.refresh(false, { optionalContentConfigPromise: promise }); this.eventBus.dispatch("optionalcontentconfigchanged", { source: this, promise }); } get scrollMode() { return this._scrollMode; } set scrollMode(mode) {} _updateScrollMode(pageNumber = null) { const scrollMode = this._scrollMode, viewer = this.viewer; viewer.classList.toggle("scrollHorizontal", scrollMode === ScrollMode.HORIZONTAL); viewer.classList.toggle("scrollWrapped", scrollMode === ScrollMode.WRAPPED); if (!this.pdfDocument || !pageNumber) { return; } if (scrollMode === ScrollMode.PAGE) { this.#ensurePageViewVisible(); } else if (this._previousScrollMode === ScrollMode.PAGE) { this._updateSpreadMode(); } if (this._currentScaleValue && isNaN(this._currentScaleValue)) { this.#setScale(this._currentScaleValue, { noScroll: true }); } this._setCurrentPageNumber(pageNumber, true); this.update(); } get spreadMode() { return this._spreadMode; } set spreadMode(mode) {} _updateSpreadMode(pageNumber = null) { if (!this.pdfDocument) { return; } const viewer = this.viewer, pages = this._pages; if (this._scrollMode === ScrollMode.PAGE) { this.#ensurePageViewVisible(); } else { viewer.textContent = ""; if (this._spreadMode === SpreadMode.NONE) { for (const pageView of this._pages) { viewer.append(pageView.div); } } else { const parity = this._spreadMode - 1; let spread = null; for (let i = 0, ii = pages.length; i < ii; ++i) { if (spread === null) { spread = document.createElement("div"); spread.className = "spread"; viewer.append(spread); } else if (i % 2 === parity) { spread = spread.cloneNode(false); viewer.append(spread); } spread.append(pages[i].div); } } } if (!pageNumber) { return; } if (this._currentScaleValue && isNaN(this._currentScaleValue)) { this.#setScale(this._currentScaleValue, { noScroll: true }); } this._setCurrentPageNumber(pageNumber, true); this.update(); } _getPageAdvance(currentPageNumber, previous = false) { switch (this._scrollMode) { case ScrollMode.WRAPPED: { const { views } = this._getVisiblePages(), pageLayout = new Map(); for (const { id, y, percent, widthPercent } of views) { if (percent === 0 || widthPercent < 100) { continue; } let yArray = pageLayout.get(y); if (!yArray) { pageLayout.set(y, yArray ||= []); } yArray.push(id); } for (const yArray of pageLayout.values()) { const currentIndex = yArray.indexOf(currentPageNumber); if (currentIndex === -1) { continue; } const numPages = yArray.length; if (numPages === 1) { break; } if (previous) { for (let i = currentIndex - 1, ii = 0; i >= ii; i--) { const currentId = yArray[i], expectedId = yArray[i + 1] - 1; if (currentId < expectedId) { return currentPageNumber - expectedId; } } } else { for (let i = currentIndex + 1, ii = numPages; i < ii; i++) { const currentId = yArray[i], expectedId = yArray[i - 1] + 1; if (currentId > expectedId) { return expectedId - currentPageNumber; } } } if (previous) { const firstId = yArray[0]; if (firstId < currentPageNumber) { return currentPageNumber - firstId + 1; } } else { const lastId = yArray[numPages - 1]; if (lastId > currentPageNumber) { return lastId - currentPageNumber + 1; } } break; } break; } case ScrollMode.HORIZONTAL: { break; } case ScrollMode.PAGE: case ScrollMode.VERTICAL: { if (this._spreadMode === SpreadMode.NONE) { break; } const parity = this._spreadMode - 1; if (previous && currentPageNumber % 2 !== parity) { break; } else if (!previous && currentPageNumber % 2 === parity) { break; } const { views } = this._getVisiblePages(), expectedId = previous ? currentPageNumber - 1 : currentPageNumber + 1; for (const { id, percent, widthPercent } of views) { if (id !== expectedId) { continue; } if (percent > 0 && widthPercent === 100) { return 2; } break; } break; } } return 1; } nextPage() { const currentPageNumber = this._currentPageNumber, pagesCount = this.pagesCount; if (currentPageNumber >= pagesCount) { return false; } const advance = this._getPageAdvance(currentPageNumber, false) || 1; this.currentPageNumber = Math.min(currentPageNumber + advance, pagesCount); return true; } previousPage() { const currentPageNumber = this._currentPageNumber; if (currentPageNumber <= 1) { return false; } const advance = this._getPageAdvance(currentPageNumber, true) || 1; this.currentPageNumber = Math.max(currentPageNumber - advance, 1); return true; } updateScale({ drawingDelay, scaleFactor = null, steps = null, origin }) { if (steps === null && scaleFactor === null) { throw new Error("Invalid updateScale options: either `steps` or `scaleFactor` must be provided."); } if (!this.pdfDocument) { return; } let newScale = this._currentScale; if (scaleFactor > 0 && scaleFactor !== 1) { newScale = Math.round(newScale * scaleFactor * 100) / 100; } else if (steps) { const delta = steps > 0 ? DEFAULT_SCALE_DELTA : 1 / DEFAULT_SCALE_DELTA; const round = steps > 0 ? Math.ceil : Math.floor; steps = Math.abs(steps); do { newScale = round((newScale * delta).toFixed(2) * 10) / 10; } while (--steps > 0); } newScale = MathClamp(newScale, MIN_SCALE, MAX_SCALE); this.#setScale(newScale, { noScroll: false, drawingDelay, origin }); } increaseScale(options = {}) { this.updateScale({ ...options, steps: options.steps ?? 1 }); } decreaseScale(options = {}) { this.updateScale({ ...options, steps: -(options.steps ?? 1) }); } #updateContainerHeightCss(height = this.container.clientHeight) { if (height !== this.#previousContainerHeight) { this.#previousContainerHeight = height; docStyle.setProperty("--viewer-container-height", `${height}px`); } } #resizeObserverCallback(entries) { for (const entry of entries) { if (entry.target === this.container) { this.#updateContainerHeightCss(Math.floor(entry.borderBoxSize[0].blockSize)); this.#containerTopLeft = null; break; } } } get containerTopLeft() { return this.#containerTopLeft ||= [this.container.offsetTop, this.container.offsetLeft]; } #cleanupTimeouts() { if (this.#scaleTimeoutId !== null) { clearTimeout(this.#scaleTimeoutId); this.#scaleTimeoutId = null; } if (this.#scrollTimeoutId !== null) { clearTimeout(this.#scrollTimeoutId); this.#scrollTimeoutId = null; } } #cleanupSwitchAnnotationEditorMode() { this.#switchAnnotationEditorModeAC?.abort(); this.#switchAnnotationEditorModeAC = null; if (this.#switchAnnotationEditorModeTimeoutId !== null) { clearTimeout(this.#switchAnnotationEditorModeTimeoutId); this.#switchAnnotationEditorModeTimeoutId = null; } } #preloadEditingData(mode) { switch (mode) { case AnnotationEditorType.STAMP: this.#mlManager?.loadModel("altText"); break; case AnnotationEditorType.SIGNATURE: this.#signatureManager?.loadSignatures(); break; } } get annotationEditorMode() { return this.#annotationEditorUIManager ? this.#annotationEditorMode : AnnotationEditorType.DISABLE; } set annotationEditorMode({ mode, editId = null, isFromKeyboard = false }) { if (!this.#annotationEditorUIManager) { throw new Error(`The AnnotationEditor is not enabled.`); } if (this.#annotationEditorMode === mode) { return; } if (!isValidAnnotationEditorMode(mode)) { throw new Error(`Invalid AnnotationEditor mode: ${mode}`); } if (!this.pdfDocument) { return; } this.#preloadEditingData(mode); const { eventBus, pdfDocument } = this; const updater = async () => { this.#cleanupSwitchAnnotationEditorMode(); this.#annotationEditorMode = mode; await this.#annotationEditorUIManager.updateMode(mode, editId, isFromKeyboard); if (mode !== this.#annotationEditorMode || pdfDocument !== this.pdfDocument) { return; } eventBus.dispatch("annotationeditormodechanged", { source: this, mode }); }; if (mode === AnnotationEditorType.NONE || this.#annotationEditorMode === AnnotationEditorType.NONE) { const isEditing = mode !== AnnotationEditorType.NONE; if (!isEditing) { this.pdfDocument.annotationStorage.resetModifiedIds(); } for (const pageView of this._pages) { pageView.toggleEditingMode(isEditing); } const idsToRefresh = this.#switchToEditAnnotationMode(); if (isEditing && idsToRefresh) { this.#cleanupSwitchAnnotationEditorMode(); this.#switchAnnotationEditorModeAC = new AbortController(); const signal = AbortSignal.any([this.#eventAbortController.signal, this.#switchAnnotationEditorModeAC.signal]); eventBus._on("pagerendered", ({ pageNumber }) => { idsToRefresh.delete(pageNumber); if (idsToRefresh.size === 0) { this.#switchAnnotationEditorModeTimeoutId = setTimeout(updater, 0); } }, { signal }); return; } } updater(); } refresh(noUpdate = false, updateArgs = Object.create(null)) { if (!this.pdfDocument) { return; } for (const pageView of this._pages) { pageView.update(updateArgs); } this.#cleanupTimeouts(); if (!noUpdate) { this.update(); } } } ;// ./web/toolbar-geckoview.js class Toolbar { #buttons; #eventBus; constructor(options, eventBus, nimbusData) { this.#eventBus = eventBus; const buttons = [{ element: options.download, eventName: "download", nimbusName: "download-button" }]; if (nimbusData) { this.#buttons = []; for (const button of buttons) { if (nimbusData[button.nimbusName]) { this.#buttons.push(button); } else { button.element.remove(); } } if (this.#buttons.length > 0) { options.container.classList.add("show"); } else { options.container.remove(); options.mainContainer.classList.add("noToolbar"); } } else { options.container.classList.add("show"); this.#buttons = buttons; } this.#bindListeners(options); } setPageNumber(pageNumber, pageLabel) {} setPagesCount(pagesCount, hasPageLabels) {} setPageScale(pageScaleValue, pageScale) {} reset() {} #bindListeners(options) { for (const { element, eventName, eventDetails } of this.#buttons) { element.addEventListener("click", evt => { if (eventName !== null) { this.#eventBus.dispatch(eventName, { source: this, ...eventDetails }); this.#eventBus.dispatch("reporttelemetry", { source: this, details: { type: "gv-buttons", data: { id: `${element.id}_tapped` } } }); } }); } } updateLoadingIndicatorState(loading = false) {} } ;// ./web/view_history.js const DEFAULT_VIEW_HISTORY_CACHE_SIZE = 20; class ViewHistory { constructor(fingerprint, cacheSize = DEFAULT_VIEW_HISTORY_CACHE_SIZE) { this.fingerprint = fingerprint; this.cacheSize = cacheSize; this._initializedPromise = this._readFromStorage().then(databaseStr => { const database = JSON.parse(databaseStr || "{}"); let index = -1; if (!Array.isArray(database.files)) { database.files = []; } else { while (database.files.length >= this.cacheSize) { database.files.shift(); } for (let i = 0, ii = database.files.length; i < ii; i++) { const branch = database.files[i]; if (branch.fingerprint === this.fingerprint) { index = i; break; } } } if (index === -1) { index = database.files.push({ fingerprint: this.fingerprint }) - 1; } this.file = database.files[index]; this.database = database; }); } async _writeToStorage() { const databaseStr = JSON.stringify(this.database); sessionStorage.setItem("pdfjs.history", databaseStr); } async _readFromStorage() { return sessionStorage.getItem("pdfjs.history"); } async set(name, val) { await this._initializedPromise; this.file[name] = val; return this._writeToStorage(); } async setMultiple(properties) { await this._initializedPromise; for (const name in properties) { this.file[name] = properties[name]; } return this._writeToStorage(); } async get(name, defaultValue) { await this._initializedPromise; const val = this.file[name]; return val !== undefined ? val : defaultValue; } async getMultiple(properties) { await this._initializedPromise; const values = Object.create(null); for (const name in properties) { const val = this.file[name]; values[name] = val !== undefined ? val : properties[name]; } return values; } } ;// ./web/app.js const FORCE_PAGES_LOADED_TIMEOUT = 10000; const ViewOnLoad = { UNKNOWN: -1, PREVIOUS: 0, INITIAL: 1 }; const PDFViewerApplication = { initialBookmark: document.location.hash.substring(1), _initializedCapability: { ...Promise.withResolvers(), settled: false }, appConfig: null, pdfDocument: null, pdfLoadingTask: null, printService: null, pdfViewer: null, pdfThumbnailViewer: null, pdfRenderingQueue: null, pdfPresentationMode: null, pdfDocumentProperties: null, pdfLinkService: null, pdfHistory: null, pdfSidebar: null, pdfOutlineViewer: null, pdfAttachmentViewer: null, pdfLayerViewer: null, pdfCursorTools: null, pdfScriptingManager: null, store: null, downloadManager: null, overlayManager: null, preferences: new Preferences(), toolbar: null, secondaryToolbar: null, eventBus: null, l10n: null, annotationEditorParams: null, imageAltTextSettings: null, isInitialViewSet: false, isViewerEmbedded: window.parent !== window, url: "", baseUrl: "", mlManager: null, _downloadUrl: "", _eventBusAbortController: null, _windowAbortController: null, _globalAbortController: new AbortController(), documentInfo: null, metadata: null, _contentDispositionFilename: null, _contentLength: null, _saveInProgress: false, _wheelUnusedTicks: 0, _wheelUnusedFactor: 1, _touchManager: null, _touchUnusedTicks: 0, _touchUnusedFactor: 1, _PDFBug: null, _hasAnnotationEditors: false, _title: document.title, _printAnnotationStoragePromise: null, _isCtrlKeyDown: false, _caretBrowsing: null, _isScrolling: false, editorUndoBar: null, async initialize(appConfig) { this.appConfig = appConfig; try { await this.preferences.initializedPromise; } catch (ex) { console.error("initialize:", ex); } if (AppOptions.get("pdfBugEnabled")) { await this._parseHashParams(); } let mode; switch (AppOptions.get("viewerCssTheme")) { case 1: mode = "light"; break; case 2: mode = "dark"; break; } if (mode) { docStyle.setProperty("color-scheme", mode); } if (AppOptions.get("enableAltText")) { this.mlManager = new MLManager({ enableGuessAltText: AppOptions.get("enableGuessAltText"), enableAltTextModelDownload: AppOptions.get("enableAltTextModelDownload"), altTextLearnMoreUrl: AppOptions.get("altTextLearnMoreUrl") }); } this.l10n = await this.externalServices.createL10n(); document.getElementsByTagName("html")[0].dir = this.l10n.getDirection(); if (this.isViewerEmbedded && AppOptions.get("externalLinkTarget") === LinkTarget.NONE) { AppOptions.set("externalLinkTarget", LinkTarget.TOP); } await this._initializeViewerComponents(); this.bindEvents(); this.bindWindowEvents(); this._initializedCapability.settled = true; this._initializedCapability.resolve(); }, async _parseHashParams() { const hash = document.location.hash.substring(1); if (!hash) { return; } const { mainContainer, viewerContainer } = this.appConfig, params = parseQueryString(hash); const loadPDFBug = async () => { if (this._PDFBug) { return; } const { PDFBug } = await import( /*webpackIgnore: true*/ /*@vite-ignore*/ AppOptions.get("debuggerSrc")); this._PDFBug = PDFBug; }; if (params.get("disableworker") === "true") { try { GlobalWorkerOptions.workerSrc ||= AppOptions.get("workerSrc"); await import( /*webpackIgnore: true*/ /*@vite-ignore*/ PDFWorker.workerSrc); } catch (ex) { console.error("_parseHashParams:", ex); } } if (params.has("textlayer")) { switch (params.get("textlayer")) { case "off": AppOptions.set("textLayerMode", TextLayerMode.DISABLE); break; case "visible": case "shadow": case "hover": viewerContainer.classList.add(`textLayer-${params.get("textlayer")}`); try { await loadPDFBug(); this._PDFBug.loadCSS(); } catch (ex) { console.error("_parseHashParams:", ex); } break; } } if (params.has("pdfbug")) { const enabled = params.get("pdfbug").split(","); try { await loadPDFBug(); this._PDFBug.init(mainContainer, enabled); } catch (ex) { console.error("_parseHashParams:", ex); } const debugOpts = { pdfBug: true, fontExtraProperties: true }; if (globalThis.StepperManager?.enabled) { debugOpts.minDurationToUpdateCanvas = 0; } AppOptions.setAll(debugOpts); } const opts = { disableAutoFetch: x => x === "true", disableFontFace: x => x === "true", disableHistory: x => x === "true", disableRange: x => x === "true", disableStream: x => x === "true", verbosity: x => x | 0 }; for (const name in opts) { const check = opts[name], key = name.toLowerCase(); if (params.has(key)) { AppOptions.set(name, check(params.get(key))); } } }, async _initializeViewerComponents() { const { appConfig, externalServices, l10n, mlManager } = this; const abortSignal = this._globalAbortController.signal; const eventBus = new FirefoxEventBus(AppOptions.get("allowedGlobalEvents"), externalServices, AppOptions.get("isInAutomation")); this.eventBus = AppOptions.eventBus = eventBus; mlManager?.setEventBus(eventBus, abortSignal); const overlayManager = this.overlayManager = new OverlayManager(); const renderingQueue = this.pdfRenderingQueue = new PDFRenderingQueue(); renderingQueue.onIdle = this._cleanup.bind(this); const linkService = this.pdfLinkService = new PDFLinkService({ eventBus, externalLinkTarget: AppOptions.get("externalLinkTarget"), externalLinkRel: AppOptions.get("externalLinkRel"), ignoreDestinationZoom: AppOptions.get("ignoreDestinationZoom") }); const downloadManager = this.downloadManager = new DownloadManager(); const findController = this.findController = new PDFFindController({ linkService, eventBus, updateMatchesCountOnProgress: false }); const pdfScriptingManager = this.pdfScriptingManager = new PDFScriptingManager({ eventBus, externalServices, docProperties: this._scriptingDocProperties.bind(this) }); const container = appConfig.mainContainer, viewer = appConfig.viewerContainer; const annotationEditorMode = AppOptions.get("annotationEditorMode"); const pageColors = AppOptions.get("forcePageColors") || window.matchMedia("(forced-colors: active)").matches ? { background: AppOptions.get("pageColorsBackground"), foreground: AppOptions.get("pageColorsForeground") } : null; let altTextManager; if (AppOptions.get("enableUpdatedAddImage")) { altTextManager = appConfig.newAltTextDialog ? new NewAltTextManager(appConfig.newAltTextDialog, overlayManager, eventBus) : null; } else { altTextManager = appConfig.altTextDialog ? new AltTextManager(appConfig.altTextDialog, container, overlayManager, eventBus) : null; } if (appConfig.editorUndoBar) { this.editorUndoBar = new EditorUndoBar(appConfig.editorUndoBar, eventBus); } const signatureManager = AppOptions.get("enableSignatureEditor") && appConfig.addSignatureDialog ? new SignatureManager(appConfig.addSignatureDialog, appConfig.editSignatureDialog, appConfig.annotationEditorParams?.editorSignatureAddSignature || null, overlayManager, l10n, externalServices.createSignatureStorage(eventBus, abortSignal), eventBus) : null; const enableHWA = AppOptions.get("enableHWA"), maxCanvasPixels = AppOptions.get("maxCanvasPixels"), maxCanvasDim = AppOptions.get("maxCanvasDim"), capCanvasAreaFactor = AppOptions.get("capCanvasAreaFactor"); const pdfViewer = this.pdfViewer = new PDFViewer({ container, viewer, eventBus, renderingQueue, linkService, downloadManager, altTextManager, signatureManager, editorUndoBar: this.editorUndoBar, findController, scriptingManager: AppOptions.get("enableScripting") && pdfScriptingManager, l10n, textLayerMode: AppOptions.get("textLayerMode"), annotationMode: AppOptions.get("annotationMode"), annotationEditorMode, annotationEditorHighlightColors: AppOptions.get("highlightEditorColors"), enableHighlightFloatingButton: AppOptions.get("enableHighlightFloatingButton"), enableUpdatedAddImage: AppOptions.get("enableUpdatedAddImage"), enableNewAltTextWhenAddingImage: AppOptions.get("enableNewAltTextWhenAddingImage"), imageResourcesPath: AppOptions.get("imageResourcesPath"), enablePrintAutoRotate: AppOptions.get("enablePrintAutoRotate"), maxCanvasPixels, maxCanvasDim, capCanvasAreaFactor, enableDetailCanvas: AppOptions.get("enableDetailCanvas"), enablePermissions: AppOptions.get("enablePermissions"), pageColors, mlManager, abortSignal, enableHWA, supportsPinchToZoom: this.supportsPinchToZoom, enableAutoLinking: AppOptions.get("enableAutoLinking"), minDurationToUpdateCanvas: AppOptions.get("minDurationToUpdateCanvas") }); renderingQueue.setViewer(pdfViewer); linkService.setViewer(pdfViewer); pdfScriptingManager.setViewer(pdfViewer); if (appConfig.sidebar?.thumbnailView) { this.pdfThumbnailViewer = new PDFThumbnailViewer({ container: appConfig.sidebar.thumbnailView, eventBus, renderingQueue, linkService, maxCanvasPixels, maxCanvasDim, pageColors, abortSignal, enableHWA }); renderingQueue.setThumbnailViewer(this.pdfThumbnailViewer); } if (!this.isViewerEmbedded && !AppOptions.get("disableHistory")) { this.pdfHistory = new PDFHistory({ linkService, eventBus }); linkService.setHistory(this.pdfHistory); } if (!this.supportsIntegratedFind && appConfig.findBar) { this.findBar = new PDFFindBar(appConfig.findBar, appConfig.principalContainer, eventBus); } if (appConfig.annotationEditorParams) { if (annotationEditorMode !== AnnotationEditorType.DISABLE) { const editorSignatureButton = appConfig.toolbar?.editorSignatureButton; if (editorSignatureButton && AppOptions.get("enableSignatureEditor")) { editorSignatureButton.parentElement.hidden = false; } this.annotationEditorParams = new AnnotationEditorParams(appConfig.annotationEditorParams, eventBus); } else { for (const id of ["editorModeButtons", "editorModeSeparator"]) { document.getElementById(id)?.classList.add("hidden"); } } } if (mlManager && appConfig.secondaryToolbar?.imageAltTextSettingsButton) { this.imageAltTextSettings = new ImageAltTextSettings(appConfig.altTextSettingsDialog, overlayManager, eventBus, mlManager); } if (appConfig.documentProperties) { this.pdfDocumentProperties = new PDFDocumentProperties(appConfig.documentProperties, overlayManager, eventBus, l10n, () => this._docFilename); } if (appConfig.secondaryToolbar?.cursorHandToolButton) { this.pdfCursorTools = new PDFCursorTools({ container, eventBus, cursorToolOnLoad: AppOptions.get("cursorToolOnLoad") }); } if (appConfig.toolbar) { const nimbusData = JSON.parse(AppOptions.get("nimbusDataStr") || "null"); this.toolbar = new Toolbar(appConfig.toolbar, eventBus, nimbusData); } if (appConfig.secondaryToolbar) { if (AppOptions.get("enableAltText")) { appConfig.secondaryToolbar.imageAltTextSettingsButton?.classList.remove("hidden"); appConfig.secondaryToolbar.imageAltTextSettingsSeparator?.classList.remove("hidden"); } this.secondaryToolbar = new SecondaryToolbar(appConfig.secondaryToolbar, eventBus); } if (this.supportsFullscreen && appConfig.secondaryToolbar?.presentationModeButton) { this.pdfPresentationMode = new PDFPresentationMode({ container, pdfViewer, eventBus }); } if (appConfig.passwordOverlay) { this.passwordPrompt = new PasswordPrompt(appConfig.passwordOverlay, overlayManager, this.isViewerEmbedded); } if (appConfig.sidebar?.outlineView) { this.pdfOutlineViewer = new PDFOutlineViewer({ container: appConfig.sidebar.outlineView, eventBus, l10n, linkService, downloadManager }); } if (appConfig.sidebar?.attachmentsView) { this.pdfAttachmentViewer = new PDFAttachmentViewer({ container: appConfig.sidebar.attachmentsView, eventBus, l10n, downloadManager }); } if (appConfig.sidebar?.layersView) { this.pdfLayerViewer = new PDFLayerViewer({ container: appConfig.sidebar.layersView, eventBus, l10n }); } if (appConfig.sidebar) { this.pdfSidebar = new PDFSidebar({ elements: appConfig.sidebar, eventBus, l10n }); this.pdfSidebar.onToggled = this.forceRendering.bind(this); this.pdfSidebar.onUpdateThumbnails = () => { for (const pageView of pdfViewer.getCachedPageViews()) { if (pageView.renderingState === RenderingStates.FINISHED) { this.pdfThumbnailViewer.getThumbnail(pageView.id - 1)?.setImage(pageView); } } this.pdfThumbnailViewer.scrollThumbnailIntoView(pdfViewer.currentPageNumber); }; } }, async run(config) { await this.initialize(config); const { appConfig, eventBus } = this; let file; file = window.location.href; if (!AppOptions.get("supportsDocumentFonts")) { AppOptions.set("disableFontFace", true); this.l10n.get("pdfjs-web-fonts-disabled").then(msg => { console.warn(msg); }); } if (!this.supportsPrinting) { appConfig.toolbar?.print?.classList.add("hidden"); appConfig.secondaryToolbar?.printButton.classList.add("hidden"); } if (!this.supportsFullscreen) { appConfig.secondaryToolbar?.presentationModeButton.classList.add("hidden"); } if (this.supportsIntegratedFind) { appConfig.findBar?.toggleButton?.classList.add("hidden"); } this.setTitleUsingUrl(file, file); this.externalServices.initPassiveLoading(); }, get externalServices() { return shadow(this, "externalServices", new ExternalServices()); }, get initialized() { return this._initializedCapability.settled; }, get initializedPromise() { return this._initializedCapability.promise; }, updateZoom(steps, scaleFactor, origin) { if (this.pdfViewer.isInPresentationMode) { return; } this.pdfViewer.updateScale({ drawingDelay: AppOptions.get("defaultZoomDelay"), steps, scaleFactor, origin }); }, zoomIn() { this.updateZoom(1); }, zoomOut() { this.updateZoom(-1); }, zoomReset() { if (this.pdfViewer.isInPresentationMode) { return; } this.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE; }, touchPinchCallback(origin, prevDistance, distance) { if (this.supportsPinchToZoom) { const newScaleFactor = this._accumulateFactor(this.pdfViewer.currentScale, distance / prevDistance, "_touchUnusedFactor"); this.updateZoom(null, newScaleFactor, origin); } else { const PIXELS_PER_LINE_SCALE = 30; const ticks = this._accumulateTicks((distance - prevDistance) / PIXELS_PER_LINE_SCALE, "_touchUnusedTicks"); this.updateZoom(ticks, null, origin); } }, touchPinchEndCallback() { this._touchUnusedTicks = 0; this._touchUnusedFactor = 1; }, get pagesCount() { return this.pdfDocument ? this.pdfDocument.numPages : 0; }, get page() { return this.pdfViewer.currentPageNumber; }, set page(val) { this.pdfViewer.currentPageNumber = val; }, get supportsPrinting() { return shadow(this, "supportsPrinting", AppOptions.get("supportsPrinting") && PDFPrintServiceFactory.supportsPrinting); }, get supportsFullscreen() { return shadow(this, "supportsFullscreen", document.fullscreenEnabled); }, get supportsPinchToZoom() { return shadow(this, "supportsPinchToZoom", AppOptions.get("supportsPinchToZoom")); }, get supportsIntegratedFind() { return shadow(this, "supportsIntegratedFind", AppOptions.get("supportsIntegratedFind")); }, get loadingBar() { const barElement = document.getElementById("loadingBar"); const bar = barElement ? new ProgressBar(barElement) : null; return shadow(this, "loadingBar", bar); }, get supportsMouseWheelZoomCtrlKey() { return shadow(this, "supportsMouseWheelZoomCtrlKey", AppOptions.get("supportsMouseWheelZoomCtrlKey")); }, get supportsMouseWheelZoomMetaKey() { return shadow(this, "supportsMouseWheelZoomMetaKey", AppOptions.get("supportsMouseWheelZoomMetaKey")); }, get supportsCaretBrowsingMode() { return AppOptions.get("supportsCaretBrowsingMode"); }, moveCaret(isUp, select) { this._caretBrowsing ||= new CaretBrowsingMode(this._globalAbortController.signal, this.appConfig.mainContainer, this.appConfig.viewerContainer, this.appConfig.toolbar?.container); this._caretBrowsing.moveCaret(isUp, select); }, setTitleUsingUrl(url = "", downloadUrl = null) { this.url = url; this.baseUrl = updateUrlHash(url, ""); if (downloadUrl) { this._downloadUrl = downloadUrl === url ? this.baseUrl : updateUrlHash(downloadUrl, ""); } if (isDataScheme(url)) { this._hideViewBookmark(); } else { AppOptions.set("docBaseUrl", this.baseUrl); } let title = getPdfFilenameFromUrl(url, ""); if (!title) { try { title = decodeURIComponent(getFilenameFromUrl(url)); } catch {} } this.setTitle(title || url); }, setTitle(title = this._title) { this._title = title; if (this.isViewerEmbedded) { return; } const editorIndicator = this._hasAnnotationEditors && !this.pdfRenderingQueue.printing; document.title = `${editorIndicator ? "* " : ""}${title}`; }, get _docFilename() { return this._contentDispositionFilename || getPdfFilenameFromUrl(this.url); }, _hideViewBookmark() { const { secondaryToolbar } = this.appConfig; secondaryToolbar?.viewBookmarkButton.classList.add("hidden"); if (secondaryToolbar?.presentationModeButton.classList.contains("hidden")) { document.getElementById("viewBookmarkSeparator")?.classList.add("hidden"); } }, async close() { this._unblockDocumentLoadEvent(); this._hideViewBookmark(); if (!this.pdfLoadingTask) { return; } const promises = []; promises.push(this.pdfLoadingTask.destroy()); this.pdfLoadingTask = null; if (this.pdfDocument) { this.pdfDocument = null; this.pdfThumbnailViewer?.setDocument(null); this.pdfViewer.setDocument(null); this.pdfLinkService.setDocument(null); this.pdfDocumentProperties?.setDocument(null); } this.pdfLinkService.externalLinkEnabled = true; this.store = null; this.isInitialViewSet = false; this.url = ""; this.baseUrl = ""; this._downloadUrl = ""; this.documentInfo = null; this.metadata = null; this._contentDispositionFilename = null; this._contentLength = null; this._saveInProgress = false; this._hasAnnotationEditors = false; promises.push(this.pdfScriptingManager.destroyPromise, this.passwordPrompt.close()); this.setTitle(); this.pdfSidebar?.reset(); this.pdfOutlineViewer?.reset(); this.pdfAttachmentViewer?.reset(); this.pdfLayerViewer?.reset(); this.pdfHistory?.reset(); this.findBar?.reset(); this.toolbar?.reset(); this.secondaryToolbar?.reset(); this._PDFBug?.cleanup(); await Promise.all(promises); }, async open(args) { if (this.pdfLoadingTask) { await this.close(); } const workerParams = AppOptions.getAll(OptionKind.WORKER); Object.assign(GlobalWorkerOptions, workerParams); if (args.data && isPdfFile(args.filename)) { this._contentDispositionFilename = args.filename; } const apiParams = AppOptions.getAll(OptionKind.API); const loadingTask = getDocument({ ...apiParams, ...args }); this.pdfLoadingTask = loadingTask; loadingTask.onPassword = (updateCallback, reason) => { if (this.isViewerEmbedded) { this._unblockDocumentLoadEvent(); } this.pdfLinkService.externalLinkEnabled = false; this.passwordPrompt.setUpdateCallback(updateCallback, reason); this.passwordPrompt.open(); }; loadingTask.onProgress = ({ loaded, total }) => { this.progress(loaded / total); }; return loadingTask.promise.then(pdfDocument => { this.load(pdfDocument); }, reason => { if (loadingTask !== this.pdfLoadingTask) { return undefined; } let key = "pdfjs-loading-error"; if (reason instanceof InvalidPDFException) { key = "pdfjs-invalid-file-error"; } else if (reason instanceof ResponseException) { key = reason.missing ? "pdfjs-missing-file-error" : "pdfjs-unexpected-response-error"; } return this._documentError(key, { message: reason.message }).then(() => { throw reason; }); }); }, async download() { let data; try { data = await (this.pdfDocument ? this.pdfDocument.getData() : this.pdfLoadingTask.getData()); } catch {} this.downloadManager.download(data, this._downloadUrl, this._docFilename); }, async save() { if (this._saveInProgress) { return; } this._saveInProgress = true; await this.pdfScriptingManager.dispatchWillSave(); try { const data = await this.pdfDocument.saveDocument(); this.downloadManager.download(data, this._downloadUrl, this._docFilename); } catch (reason) { console.error(`Error when saving the document:`, reason); await this.download(); } finally { await this.pdfScriptingManager.dispatchDidSave(); this._saveInProgress = false; } if (this._hasAnnotationEditors) { this.externalServices.reportTelemetry({ type: "editing", data: { type: "save", stats: this.pdfDocument?.annotationStorage.editorStats } }); } }, async downloadOrSave() { const { classList } = this.appConfig.appContainer; classList.add("wait"); await (this.pdfDocument?.annotationStorage.size > 0 ? this.save() : this.download()); classList.remove("wait"); }, async _documentError(key, moreInfo = null) { this._unblockDocumentLoadEvent(); const message = await this._otherError(key || "pdfjs-loading-error", moreInfo); this.eventBus.dispatch("documenterror", { source: this, message, reason: moreInfo?.message ?? null }); }, async _otherError(key, moreInfo = null) { const message = await this.l10n.get(key); const moreInfoText = [`PDF.js v${version || "?"} (build: ${build || "?"})`]; if (moreInfo) { moreInfoText.push(`Message: ${moreInfo.message}`); if (moreInfo.stack) { moreInfoText.push(`Stack: ${moreInfo.stack}`); } else { if (moreInfo.filename) { moreInfoText.push(`File: ${moreInfo.filename}`); } if (moreInfo.lineNumber) { moreInfoText.push(`Line: ${moreInfo.lineNumber}`); } } } console.error(`${message}\n\n${moreInfoText.join("\n")}`); return message; }, progress(level) { const percent = Math.round(level * 100); if (!this.loadingBar || percent <= this.loadingBar.percent) { return; } this.loadingBar.percent = percent; if (this.pdfDocument?.loadingParams.disableAutoFetch ?? AppOptions.get("disableAutoFetch")) { this.loadingBar.setDisableAutoFetch(); } }, load(pdfDocument) { this.pdfDocument = pdfDocument; pdfDocument.getDownloadInfo().then(({ length }) => { this._contentLength = length; this.loadingBar?.hide(); firstPagePromise.then(() => { this.eventBus.dispatch("documentloaded", { source: this }); }); }); const pageLayoutPromise = pdfDocument.getPageLayout().catch(() => {}); const pageModePromise = pdfDocument.getPageMode().catch(() => {}); const openActionPromise = pdfDocument.getOpenAction().catch(() => {}); this.toolbar?.setPagesCount(pdfDocument.numPages, false); this.secondaryToolbar?.setPagesCount(pdfDocument.numPages); this.pdfLinkService.setDocument(pdfDocument); this.pdfDocumentProperties?.setDocument(pdfDocument); const pdfViewer = this.pdfViewer; pdfViewer.setDocument(pdfDocument); const { firstPagePromise, onePageRendered, pagesPromise } = pdfViewer; this.pdfThumbnailViewer?.setDocument(pdfDocument); const storedPromise = (this.store = new ViewHistory(pdfDocument.fingerprints[0])).getMultiple({ page: null, zoom: DEFAULT_SCALE_VALUE, scrollLeft: "0", scrollTop: "0", rotation: null, sidebarView: SidebarView.UNKNOWN, scrollMode: ScrollMode.UNKNOWN, spreadMode: SpreadMode.UNKNOWN }).catch(() => {}); firstPagePromise.then(pdfPage => { this.loadingBar?.setWidth(this.appConfig.viewerContainer); this._initializeAnnotationStorageCallbacks(pdfDocument); Promise.all([animationStarted, storedPromise, pageLayoutPromise, pageModePromise, openActionPromise]).then(async ([timeStamp, stored, pageLayout, pageMode, openAction]) => { const viewOnLoad = AppOptions.get("viewOnLoad"); this._initializePdfHistory({ fingerprint: pdfDocument.fingerprints[0], viewOnLoad, initialDest: openAction?.dest }); const initialBookmark = this.initialBookmark; const zoom = AppOptions.get("defaultZoomValue"); let hash = zoom ? `zoom=${zoom}` : null; let rotation = null; let sidebarView = AppOptions.get("sidebarViewOnLoad"); let scrollMode = AppOptions.get("scrollModeOnLoad"); let spreadMode = AppOptions.get("spreadModeOnLoad"); if (stored?.page && viewOnLoad !== ViewOnLoad.INITIAL) { hash = `page=${stored.page}&zoom=${zoom || stored.zoom},` + `${stored.scrollLeft},${stored.scrollTop}`; rotation = parseInt(stored.rotation, 10); if (sidebarView === SidebarView.UNKNOWN) { sidebarView = stored.sidebarView | 0; } if (scrollMode === ScrollMode.UNKNOWN) { scrollMode = stored.scrollMode | 0; } if (spreadMode === SpreadMode.UNKNOWN) { spreadMode = stored.spreadMode | 0; } } if (pageMode && sidebarView === SidebarView.UNKNOWN) { sidebarView = apiPageModeToSidebarView(pageMode); } if (pageLayout && scrollMode === ScrollMode.UNKNOWN && spreadMode === SpreadMode.UNKNOWN) { const modes = apiPageLayoutToViewerModes(pageLayout); spreadMode = modes.spreadMode; } this.setInitialView(hash, { rotation, sidebarView, scrollMode, spreadMode }); this.eventBus.dispatch("documentinit", { source: this }); if (!this.isViewerEmbedded) { pdfViewer.focus(); } await Promise.race([pagesPromise, new Promise(resolve => { setTimeout(resolve, FORCE_PAGES_LOADED_TIMEOUT); })]); if (!initialBookmark && !hash) { return; } if (pdfViewer.hasEqualPageSizes) { return; } this.initialBookmark = initialBookmark; pdfViewer.currentScaleValue = pdfViewer.currentScaleValue; this.setInitialView(hash); }).catch(() => { this.setInitialView(); }).then(function () { pdfViewer.update(); }); }); pagesPromise.then(() => { this._unblockDocumentLoadEvent(); this._initializeAutoPrint(pdfDocument, openActionPromise); }, reason => { this._documentError("pdfjs-loading-error", { message: reason.message }); }); onePageRendered.then(data => { this.externalServices.reportTelemetry({ type: "pageInfo", timestamp: data.timestamp }); if (this.pdfOutlineViewer) { pdfDocument.getOutline().then(outline => { if (pdfDocument !== this.pdfDocument) { return; } this.pdfOutlineViewer.render({ outline, pdfDocument }); }); } if (this.pdfAttachmentViewer) { pdfDocument.getAttachments().then(attachments => { if (pdfDocument !== this.pdfDocument) { return; } this.pdfAttachmentViewer.render({ attachments }); }); } if (this.pdfLayerViewer) { pdfViewer.optionalContentConfigPromise.then(optionalContentConfig => { if (pdfDocument !== this.pdfDocument) { return; } this.pdfLayerViewer.render({ optionalContentConfig, pdfDocument }); }); } }); this._initializePageLabels(pdfDocument); this._initializeMetadata(pdfDocument); }, async _scriptingDocProperties(pdfDocument) { if (!this.documentInfo) { await new Promise(resolve => { this.eventBus._on("metadataloaded", resolve, { once: true }); }); if (pdfDocument !== this.pdfDocument) { return null; } } if (!this._contentLength) { await new Promise(resolve => { this.eventBus._on("documentloaded", resolve, { once: true }); }); if (pdfDocument !== this.pdfDocument) { return null; } } return { ...this.documentInfo, baseURL: this.baseUrl, filesize: this._contentLength, filename: this._docFilename, metadata: this.metadata?.getRaw(), authors: this.metadata?.get("dc:creator"), numPages: this.pagesCount, URL: this.url }; }, async _initializeAutoPrint(pdfDocument, openActionPromise) { const [openAction, jsActions] = await Promise.all([openActionPromise, this.pdfViewer.enableScripting ? null : pdfDocument.getJSActions()]); if (pdfDocument !== this.pdfDocument) { return; } let triggerAutoPrint = openAction?.action === "Print"; if (jsActions) { console.warn("Warning: JavaScript support is not enabled"); for (const name in jsActions) { if (triggerAutoPrint) { break; } switch (name) { case "WillClose": case "WillSave": case "DidSave": case "WillPrint": case "DidPrint": continue; } triggerAutoPrint = jsActions[name].some(js => AutoPrintRegExp.test(js)); } } if (triggerAutoPrint) { this.triggerPrinting(); } }, async _initializeMetadata(pdfDocument) { const { info, metadata, contentDispositionFilename, contentLength } = await pdfDocument.getMetadata(); if (pdfDocument !== this.pdfDocument) { return; } this.documentInfo = info; this.metadata = metadata; this._contentDispositionFilename ??= contentDispositionFilename; this._contentLength ??= contentLength; console.log(`PDF ${pdfDocument.fingerprints[0]} [${info.PDFFormatVersion} ` + `${(info.Producer || "-").trim()} / ${(info.Creator || "-").trim()}] ` + `(PDF.js: ${version || "?"} [${build || "?"}])`); let pdfTitle = info.Title; const metadataTitle = metadata?.get("dc:title"); if (metadataTitle) { if (metadataTitle !== "Untitled" && !/[\uFFF0-\uFFFF]/g.test(metadataTitle)) { pdfTitle = metadataTitle; } } if (pdfTitle) { this.setTitle(`${pdfTitle} - ${this._contentDispositionFilename || this._title}`); } else if (this._contentDispositionFilename) { this.setTitle(this._contentDispositionFilename); } if (info.IsXFAPresent && !info.IsAcroFormPresent && !pdfDocument.isPureXfa) { if (pdfDocument.loadingParams.enableXfa) { console.warn("Warning: XFA Foreground documents are not supported"); } else { console.warn("Warning: XFA support is not enabled"); } } else if ((info.IsAcroFormPresent || info.IsXFAPresent) && !this.pdfViewer.renderForms) { console.warn("Warning: Interactive form support is not enabled"); } if (info.IsSignaturesPresent) { console.warn("Warning: Digital signatures validation is not supported"); } this.eventBus.dispatch("metadataloaded", { source: this }); }, async _initializePageLabels(pdfDocument) {}, _initializePdfHistory({ fingerprint, viewOnLoad, initialDest = null }) { if (!this.pdfHistory) { return; } this.pdfHistory.initialize({ fingerprint, resetHistory: viewOnLoad === ViewOnLoad.INITIAL, updateUrl: AppOptions.get("historyUpdateUrl") }); if (this.pdfHistory.initialBookmark) { this.initialBookmark = this.pdfHistory.initialBookmark; this.initialRotation = this.pdfHistory.initialRotation; } if (initialDest && !this.initialBookmark && viewOnLoad === ViewOnLoad.UNKNOWN) { this.initialBookmark = JSON.stringify(initialDest); this.pdfHistory.push({ explicitDest: initialDest, pageNumber: null }); } }, _initializeAnnotationStorageCallbacks(pdfDocument) { if (pdfDocument !== this.pdfDocument) { return; } const { annotationStorage } = pdfDocument; annotationStorage.onSetModified = () => { window.addEventListener("beforeunload", beforeUnload); }; annotationStorage.onResetModified = () => { window.removeEventListener("beforeunload", beforeUnload); }; annotationStorage.onAnnotationEditor = typeStr => { this._hasAnnotationEditors = !!typeStr; this.setTitle(); }; }, setInitialView(storedHash, { rotation, sidebarView, scrollMode, spreadMode } = {}) { const setRotation = angle => { if (isValidRotation(angle)) { this.pdfViewer.pagesRotation = angle; } }; const setViewerModes = (scroll, spread) => { if (isValidScrollMode(scroll)) { this.pdfViewer.scrollMode = scroll; } if (isValidSpreadMode(spread)) { this.pdfViewer.spreadMode = spread; } }; this.isInitialViewSet = true; this.pdfSidebar?.setInitialView(sidebarView); setViewerModes(scrollMode, spreadMode); if (this.initialBookmark) { setRotation(this.initialRotation); delete this.initialRotation; this.pdfLinkService.setHash(this.initialBookmark); this.initialBookmark = null; } else if (storedHash) { setRotation(rotation); this.pdfLinkService.setHash(storedHash); } this.toolbar?.setPageNumber(this.pdfViewer.currentPageNumber, this.pdfViewer.currentPageLabel); this.secondaryToolbar?.setPageNumber(this.pdfViewer.currentPageNumber); if (!this.pdfViewer.currentScaleValue) { this.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE; } }, _cleanup() { if (!this.pdfDocument) { return; } this.pdfViewer.cleanup(); this.pdfThumbnailViewer?.cleanup(); this.pdfDocument.cleanup(AppOptions.get("fontExtraProperties")); }, forceRendering() { this.pdfRenderingQueue.printing = !!this.printService; this.pdfRenderingQueue.isThumbnailViewEnabled = this.pdfSidebar?.visibleView === SidebarView.THUMBS; this.pdfRenderingQueue.renderHighestPriority(); }, beforePrint() { this._printAnnotationStoragePromise = this.pdfScriptingManager.dispatchWillPrint().catch(() => {}).then(() => this.pdfDocument?.annotationStorage.print); if (this.printService) { return; } if (!this.supportsPrinting) { this._otherError("pdfjs-printing-not-supported"); return; } if (!this.pdfViewer.pageViewsReady) { this.l10n.get("pdfjs-printing-not-ready").then(msg => { window.alert(msg); }); return; } this.printService = PDFPrintServiceFactory.createPrintService({ pdfDocument: this.pdfDocument, pagesOverview: this.pdfViewer.getPagesOverview(), printContainer: this.appConfig.printContainer, printResolution: AppOptions.get("printResolution"), printAnnotationStoragePromise: this._printAnnotationStoragePromise }); this.forceRendering(); this.setTitle(); this.printService.layout(); if (this._hasAnnotationEditors) { this.externalServices.reportTelemetry({ type: "editing", data: { type: "print", stats: this.pdfDocument?.annotationStorage.editorStats } }); } }, afterPrint() { if (this._printAnnotationStoragePromise) { this._printAnnotationStoragePromise.then(() => { this.pdfScriptingManager.dispatchDidPrint(); }); this._printAnnotationStoragePromise = null; } if (this.printService) { this.printService.destroy(); this.printService = null; this.pdfDocument?.annotationStorage.resetModified(); } this.forceRendering(); this.setTitle(); }, rotatePages(delta) { this.pdfViewer.pagesRotation += delta; }, requestPresentationMode() { this.pdfPresentationMode?.request(); }, triggerPrinting() { if (this.supportsPrinting) { window.print(); } }, bindEvents() { if (this._eventBusAbortController) { return; } const ac = this._eventBusAbortController = new AbortController(); const opts = { signal: ac.signal }; const { eventBus, externalServices, pdfDocumentProperties, pdfViewer, preferences } = this; eventBus._on("resize", onResize.bind(this), opts); eventBus._on("hashchange", onHashchange.bind(this), opts); eventBus._on("beforeprint", this.beforePrint.bind(this), opts); eventBus._on("afterprint", this.afterPrint.bind(this), opts); eventBus._on("pagerender", onPageRender.bind(this), opts); eventBus._on("pagerendered", onPageRendered.bind(this), opts); eventBus._on("updateviewarea", onUpdateViewarea.bind(this), opts); eventBus._on("pagechanging", onPageChanging.bind(this), opts); eventBus._on("scalechanging", onScaleChanging.bind(this), opts); eventBus._on("rotationchanging", onRotationChanging.bind(this), opts); eventBus._on("sidebarviewchanged", onSidebarViewChanged.bind(this), opts); eventBus._on("pagemode", onPageMode.bind(this), opts); eventBus._on("namedaction", onNamedAction.bind(this), opts); eventBus._on("presentationmodechanged", evt => pdfViewer.presentationModeState = evt.state, opts); eventBus._on("presentationmode", this.requestPresentationMode.bind(this), opts); eventBus._on("switchannotationeditormode", evt => pdfViewer.annotationEditorMode = evt, opts); eventBus._on("print", this.triggerPrinting.bind(this), opts); eventBus._on("download", this.downloadOrSave.bind(this), opts); eventBus._on("firstpage", () => this.page = 1, opts); eventBus._on("lastpage", () => this.page = this.pagesCount, opts); eventBus._on("nextpage", () => pdfViewer.nextPage(), opts); eventBus._on("previouspage", () => pdfViewer.previousPage(), opts); eventBus._on("zoomin", this.zoomIn.bind(this), opts); eventBus._on("zoomout", this.zoomOut.bind(this), opts); eventBus._on("zoomreset", this.zoomReset.bind(this), opts); eventBus._on("pagenumberchanged", onPageNumberChanged.bind(this), opts); eventBus._on("scalechanged", evt => pdfViewer.currentScaleValue = evt.value, opts); eventBus._on("rotatecw", this.rotatePages.bind(this, 90), opts); eventBus._on("rotateccw", this.rotatePages.bind(this, -90), opts); eventBus._on("optionalcontentconfig", evt => pdfViewer.optionalContentConfigPromise = evt.promise, opts); eventBus._on("switchscrollmode", evt => pdfViewer.scrollMode = evt.mode, opts); eventBus._on("scrollmodechanged", onViewerModesChanged.bind(this, "scrollMode"), opts); eventBus._on("switchspreadmode", evt => pdfViewer.spreadMode = evt.mode, opts); eventBus._on("spreadmodechanged", onViewerModesChanged.bind(this, "spreadMode"), opts); eventBus._on("imagealttextsettings", onImageAltTextSettings.bind(this), opts); eventBus._on("documentproperties", () => pdfDocumentProperties?.open(), opts); eventBus._on("findfromurlhash", onFindFromUrlHash.bind(this), opts); eventBus._on("updatefindmatchescount", onUpdateFindMatchesCount.bind(this), opts); eventBus._on("updatefindcontrolstate", onUpdateFindControlState.bind(this), opts); eventBus._on("annotationeditorstateschanged", evt => externalServices.updateEditorStates(evt), opts); eventBus._on("reporttelemetry", evt => externalServices.reportTelemetry(evt.details), opts); eventBus._on("setpreference", evt => preferences.set(evt.name, evt.value), opts); }, bindWindowEvents() { if (this._windowAbortController) { return; } this._windowAbortController = new AbortController(); const { eventBus, appConfig: { mainContainer }, pdfViewer, _windowAbortController: { signal } } = this; this._touchManager = new TouchManager({ container: window, isPinchingDisabled: () => pdfViewer.isInPresentationMode, isPinchingStopped: () => this.overlayManager?.active, onPinching: this.touchPinchCallback.bind(this), onPinchEnd: this.touchPinchEndCallback.bind(this), signal }); function addWindowResolutionChange(evt = null) { if (evt) { pdfViewer.refresh(); } const mediaQueryList = window.matchMedia(`(resolution: ${OutputScale.pixelRatio}dppx)`); mediaQueryList.addEventListener("change", addWindowResolutionChange, { once: true, signal }); } addWindowResolutionChange(); window.addEventListener("wheel", onWheel.bind(this), { passive: false, signal }); window.addEventListener("click", onClick.bind(this), { signal }); window.addEventListener("keydown", onKeyDown.bind(this), { signal }); window.addEventListener("keyup", onKeyUp.bind(this), { signal }); window.addEventListener("resize", () => eventBus.dispatch("resize", { source: window }), { signal }); window.addEventListener("hashchange", () => { eventBus.dispatch("hashchange", { source: window, hash: document.location.hash.substring(1) }); }, { signal }); window.addEventListener("beforeprint", () => eventBus.dispatch("beforeprint", { source: window }), { signal }); window.addEventListener("afterprint", () => eventBus.dispatch("afterprint", { source: window }), { signal }); window.addEventListener("updatefromsandbox", evt => { eventBus.dispatch("updatefromsandbox", { source: window, detail: evt.detail }); }, { signal }); const scrollend = () => { this._isScrolling = false; mainContainer.addEventListener("scroll", scroll, { passive: true, signal }); mainContainer.removeEventListener("scrollend", scrollend); mainContainer.removeEventListener("blur", scrollend); }; const scroll = () => { if (this._isCtrlKeyDown) { return; } mainContainer.removeEventListener("scroll", scroll); this._isScrolling = true; mainContainer.addEventListener("scrollend", scrollend, { signal }); mainContainer.addEventListener("blur", scrollend, { signal }); }; mainContainer.addEventListener("scroll", scroll, { passive: true, signal }); }, unbindEvents() { this._eventBusAbortController?.abort(); this._eventBusAbortController = null; }, unbindWindowEvents() { this._windowAbortController?.abort(); this._windowAbortController = null; this._touchManager = null; }, async testingClose() { this.unbindEvents(); this.unbindWindowEvents(); this._globalAbortController?.abort(); this._globalAbortController = null; this.findBar?.close(); await Promise.all([this.l10n?.destroy(), this.close()]); }, _accumulateTicks(ticks, prop) { if (this[prop] > 0 && ticks < 0 || this[prop] < 0 && ticks > 0) { this[prop] = 0; } this[prop] += ticks; const wholeTicks = Math.trunc(this[prop]); this[prop] -= wholeTicks; return wholeTicks; }, _accumulateFactor(previousScale, factor, prop) { if (factor === 1) { return 1; } if (this[prop] > 1 && factor < 1 || this[prop] < 1 && factor > 1) { this[prop] = 1; } const newFactor = Math.floor(previousScale * factor * this[prop] * 100) / (100 * previousScale); this[prop] = factor / newFactor; return newFactor; }, _unblockDocumentLoadEvent() { document.blockUnblockOnload?.(false); this._unblockDocumentLoadEvent = () => {}; }, get scriptingReady() { return this.pdfScriptingManager.ready; } }; initCom(PDFViewerApplication); function onPageRender({ pageNumber }) { if (pageNumber === this.page) { this.toolbar?.updateLoadingIndicatorState(true); } } function onPageRendered({ pageNumber, isDetailView, error }) { if (pageNumber === this.page) { this.toolbar?.updateLoadingIndicatorState(false); } if (!isDetailView && this.pdfSidebar?.visibleView === SidebarView.THUMBS) { const pageView = this.pdfViewer.getPageView(pageNumber - 1); const thumbnailView = this.pdfThumbnailViewer?.getThumbnail(pageNumber - 1); if (pageView) { thumbnailView?.setImage(pageView); } } if (error) { this._otherError("pdfjs-rendering-error", error); } } function onPageMode({ mode }) { let view; switch (mode) { case "thumbs": view = SidebarView.THUMBS; break; case "bookmarks": case "outline": view = SidebarView.OUTLINE; break; case "attachments": view = SidebarView.ATTACHMENTS; break; case "layers": view = SidebarView.LAYERS; break; case "none": view = SidebarView.NONE; break; default: console.error('Invalid "pagemode" hash parameter: ' + mode); return; } this.pdfSidebar?.switchView(view, true); } function onNamedAction(evt) { switch (evt.action) { case "GoToPage": this.appConfig.toolbar?.pageNumber.select(); break; case "Find": if (!this.supportsIntegratedFind) { this.findBar?.toggle(); } break; case "Print": this.triggerPrinting(); break; case "SaveAs": this.downloadOrSave(); break; } } function onSidebarViewChanged({ view }) { this.pdfRenderingQueue.isThumbnailViewEnabled = view === SidebarView.THUMBS; if (this.isInitialViewSet) { this.store?.set("sidebarView", view).catch(() => {}); } } function onUpdateViewarea({ location }) { if (this.isInitialViewSet) { this.store?.setMultiple({ page: location.pageNumber, zoom: location.scale, scrollLeft: location.left, scrollTop: location.top, rotation: location.rotation }).catch(() => {}); } if (this.appConfig.secondaryToolbar) { this.appConfig.secondaryToolbar.viewBookmarkButton.href = this.pdfLinkService.getAnchorUrl(location.pdfOpenParams); } } function onViewerModesChanged(name, evt) { if (this.isInitialViewSet && !this.pdfViewer.isInPresentationMode) { this.store?.set(name, evt.mode).catch(() => {}); } } function onResize() { const { pdfDocument, pdfViewer, pdfRenderingQueue } = this; if (pdfRenderingQueue.printing && window.matchMedia("print").matches) { return; } if (!pdfDocument) { return; } const currentScaleValue = pdfViewer.currentScaleValue; if (currentScaleValue === "auto" || currentScaleValue === "page-fit" || currentScaleValue === "page-width") { pdfViewer.currentScaleValue = currentScaleValue; } pdfViewer.update(); } function onHashchange(evt) { const hash = evt.hash; if (!hash) { return; } if (!this.isInitialViewSet) { this.initialBookmark = hash; } else if (!this.pdfHistory?.popStateInProgress) { this.pdfLinkService.setHash(hash); } } function onPageNumberChanged(evt) { const { pdfViewer } = this; if (evt.value !== "") { this.pdfLinkService.goToPage(evt.value); } if (evt.value !== pdfViewer.currentPageNumber.toString() && evt.value !== pdfViewer.currentPageLabel) { this.toolbar?.setPageNumber(pdfViewer.currentPageNumber, pdfViewer.currentPageLabel); } } function onImageAltTextSettings() { this.imageAltTextSettings?.open({ enableGuessAltText: AppOptions.get("enableGuessAltText"), enableNewAltTextWhenAddingImage: AppOptions.get("enableNewAltTextWhenAddingImage") }); } function onFindFromUrlHash(evt) { this.eventBus.dispatch("find", { source: evt.source, type: "", query: evt.query, caseSensitive: false, entireWord: false, highlightAll: true, findPrevious: false, matchDiacritics: true }); } function onUpdateFindMatchesCount({ matchesCount }) { if (this.supportsIntegratedFind) { this.externalServices.updateFindMatchesCount(matchesCount); } else { this.findBar?.updateResultsCount(matchesCount); } } function onUpdateFindControlState({ state, previous, entireWord, matchesCount, rawQuery }) { if (this.supportsIntegratedFind) { this.externalServices.updateFindControlState({ result: state, findPrevious: previous, entireWord, matchesCount, rawQuery }); } else { this.findBar?.updateUIState(state, previous, matchesCount); } } function onScaleChanging(evt) { this.toolbar?.setPageScale(evt.presetValue, evt.scale); this.pdfViewer.update(); } function onRotationChanging(evt) { if (this.pdfThumbnailViewer) { this.pdfThumbnailViewer.pagesRotation = evt.pagesRotation; } this.forceRendering(); this.pdfViewer.currentPageNumber = evt.pageNumber; } function onPageChanging({ pageNumber, pageLabel }) { this.toolbar?.setPageNumber(pageNumber, pageLabel); this.secondaryToolbar?.setPageNumber(pageNumber); if (this.pdfSidebar?.visibleView === SidebarView.THUMBS) { this.pdfThumbnailViewer?.scrollThumbnailIntoView(pageNumber); } const currentPage = this.pdfViewer.getPageView(pageNumber - 1); this.toolbar?.updateLoadingIndicatorState(currentPage?.renderingState === RenderingStates.RUNNING); } function onWheel(evt) { const { pdfViewer, supportsMouseWheelZoomCtrlKey, supportsMouseWheelZoomMetaKey, supportsPinchToZoom } = this; if (pdfViewer.isInPresentationMode) { return; } const deltaMode = evt.deltaMode; let scaleFactor = Math.exp(-evt.deltaY / 100); const isBuiltInMac = FeatureTest.platform.isMac; const isPinchToZoom = evt.ctrlKey && !this._isCtrlKeyDown && deltaMode === WheelEvent.DOM_DELTA_PIXEL && evt.deltaX === 0 && (Math.abs(scaleFactor - 1) < 0.05 || isBuiltInMac) && evt.deltaZ === 0; const origin = [evt.clientX, evt.clientY]; if (isPinchToZoom || evt.ctrlKey && supportsMouseWheelZoomCtrlKey || evt.metaKey && supportsMouseWheelZoomMetaKey) { evt.preventDefault(); if (this._isScrolling || document.visibilityState === "hidden" || this.overlayManager.active) { return; } if (isPinchToZoom && supportsPinchToZoom) { scaleFactor = this._accumulateFactor(pdfViewer.currentScale, scaleFactor, "_wheelUnusedFactor"); this.updateZoom(null, scaleFactor, origin); } else { const delta = normalizeWheelEventDirection(evt); let ticks = 0; if (deltaMode === WheelEvent.DOM_DELTA_LINE || deltaMode === WheelEvent.DOM_DELTA_PAGE) { ticks = Math.abs(delta) >= 1 ? Math.sign(delta) : this._accumulateTicks(delta, "_wheelUnusedTicks"); } else { const PIXELS_PER_LINE_SCALE = 30; ticks = this._accumulateTicks(delta / PIXELS_PER_LINE_SCALE, "_wheelUnusedTicks"); } this.updateZoom(ticks, null, origin); } } } function closeSecondaryToolbar({ target }) { if (!this.secondaryToolbar?.isOpen) { return; } const { toolbar, secondaryToolbar } = this.appConfig; if (this.pdfViewer.containsElement(target) || toolbar?.container.contains(target) && !secondaryToolbar?.toolbar.contains(target) && !secondaryToolbar?.toggleButton.contains(target)) { this.secondaryToolbar.close(); } } function closeEditorUndoBar(evt) { if (!this.editorUndoBar?.isOpen) { return; } if (this.appConfig.secondaryToolbar?.toolbar.contains(evt.target)) { this.editorUndoBar.hide(); } } function onClick(evt) { closeSecondaryToolbar.call(this, evt); closeEditorUndoBar.call(this, evt); } function onKeyUp(evt) { if (evt.key === "Control") { this._isCtrlKeyDown = false; } } function onKeyDown(evt) { this._isCtrlKeyDown = evt.key === "Control"; if (this.editorUndoBar?.isOpen && evt.keyCode !== 9 && evt.keyCode !== 16 && !((evt.keyCode === 13 || evt.keyCode === 32) && getActiveOrFocusedElement() === this.appConfig.editorUndoBar.undoButton)) { this.editorUndoBar.hide(); } if (this.overlayManager.active) { return; } const { eventBus, pdfViewer } = this; const isViewerInPresentationMode = pdfViewer.isInPresentationMode; let handled = false, ensureViewerFocused = false; const cmd = (evt.ctrlKey ? 1 : 0) | (evt.altKey ? 2 : 0) | (evt.shiftKey ? 4 : 0) | (evt.metaKey ? 8 : 0); if (cmd === 1 || cmd === 8 || cmd === 5 || cmd === 12) { switch (evt.keyCode) { case 70: if (!this.supportsIntegratedFind && !evt.shiftKey) { this.findBar?.open(); handled = true; } break; case 71: if (!this.supportsIntegratedFind) { const { state } = this.findController; if (state) { const newState = { source: window, type: "again", findPrevious: cmd === 5 || cmd === 12 }; eventBus.dispatch("find", { ...state, ...newState }); } handled = true; } break; case 61: case 107: case 187: case 171: this.zoomIn(); handled = true; break; case 173: case 109: case 189: this.zoomOut(); handled = true; break; case 48: case 96: if (!isViewerInPresentationMode) { setTimeout(() => { this.zoomReset(); }); handled = false; } break; case 38: if (isViewerInPresentationMode || this.page > 1) { this.page = 1; handled = true; ensureViewerFocused = true; } break; case 40: if (isViewerInPresentationMode || this.page < this.pagesCount) { this.page = this.pagesCount; handled = true; ensureViewerFocused = true; } break; } } if (cmd === 3 || cmd === 10) { switch (evt.keyCode) { case 80: this.requestPresentationMode(); handled = true; this.externalServices.reportTelemetry({ type: "buttons", data: { id: "presentationModeKeyboard" } }); break; case 71: if (this.appConfig.toolbar) { this.appConfig.toolbar.pageNumber.select(); handled = true; } break; } } if (handled) { if (ensureViewerFocused && !isViewerInPresentationMode) { pdfViewer.focus(); } evt.preventDefault(); return; } const curElement = getActiveOrFocusedElement(); const curElementTagName = curElement?.tagName.toUpperCase(); if (curElementTagName === "INPUT" || curElementTagName === "TEXTAREA" || curElementTagName === "SELECT" || curElementTagName === "BUTTON" && (evt.keyCode === 13 || evt.keyCode === 32) || curElement?.isContentEditable) { if (evt.keyCode !== 27) { return; } } if (cmd === 0) { let turnPage = 0, turnOnlyIfPageFit = false; switch (evt.keyCode) { case 38: if (this.supportsCaretBrowsingMode) { this.moveCaret(true, false); handled = true; break; } case 33: if (pdfViewer.isVerticalScrollbarEnabled) { turnOnlyIfPageFit = true; } turnPage = -1; break; case 8: if (!isViewerInPresentationMode) { turnOnlyIfPageFit = true; } turnPage = -1; break; case 37: if (this.supportsCaretBrowsingMode) { return; } if (pdfViewer.isHorizontalScrollbarEnabled) { turnOnlyIfPageFit = true; } case 75: case 80: turnPage = -1; break; case 27: if (this.secondaryToolbar?.isOpen) { this.secondaryToolbar.close(); handled = true; } if (!this.supportsIntegratedFind && this.findBar?.opened) { this.findBar.close(); handled = true; } break; case 40: if (this.supportsCaretBrowsingMode) { this.moveCaret(false, false); handled = true; break; } case 34: if (pdfViewer.isVerticalScrollbarEnabled) { turnOnlyIfPageFit = true; } turnPage = 1; break; case 13: case 32: if (!isViewerInPresentationMode) { turnOnlyIfPageFit = true; } turnPage = 1; break; case 39: if (this.supportsCaretBrowsingMode) { return; } if (pdfViewer.isHorizontalScrollbarEnabled) { turnOnlyIfPageFit = true; } case 74: case 78: turnPage = 1; break; case 36: if (isViewerInPresentationMode || this.page > 1) { this.page = 1; handled = true; ensureViewerFocused = true; } break; case 35: if (isViewerInPresentationMode || this.page < this.pagesCount) { this.page = this.pagesCount; handled = true; ensureViewerFocused = true; } break; case 83: this.pdfCursorTools?.switchTool(CursorTool.SELECT); break; case 72: this.pdfCursorTools?.switchTool(CursorTool.HAND); break; case 82: this.rotatePages(90); break; case 115: this.pdfSidebar?.toggle(); break; } if (turnPage !== 0 && (!turnOnlyIfPageFit || pdfViewer.currentScaleValue === "page-fit")) { if (turnPage > 0) { pdfViewer.nextPage(); } else { pdfViewer.previousPage(); } handled = true; } } if (cmd === 4) { switch (evt.keyCode) { case 13: case 32: if (!isViewerInPresentationMode && pdfViewer.currentScaleValue !== "page-fit") { break; } pdfViewer.previousPage(); handled = true; break; case 38: this.moveCaret(true, true); handled = true; break; case 40: this.moveCaret(false, true); handled = true; break; case 82: this.rotatePages(-90); break; } } if (!handled && !isViewerInPresentationMode) { if (evt.keyCode >= 33 && evt.keyCode <= 40 || evt.keyCode === 32 && curElementTagName !== "BUTTON") { ensureViewerFocused = true; } } if (ensureViewerFocused && !pdfViewer.containsElement(curElement)) { pdfViewer.focus(); } if (handled) { evt.preventDefault(); } } function beforeUnload(evt) { evt.preventDefault(); evt.returnValue = ""; return false; } ;// ./web/viewer-geckoview.js const pdfjsVersion = "5.2.183"; const pdfjsBuild = "3f1ecc1ba"; const AppConstants = null; window.PDFViewerApplication = PDFViewerApplication; window.PDFViewerApplicationConstants = AppConstants; window.PDFViewerApplicationOptions = AppOptions; function getViewerConfiguration() { const mainContainer = document.getElementById("viewerContainer"); return { appContainer: document.body, mainContainer, viewerContainer: document.getElementById("viewer"), toolbar: { mainContainer, container: document.getElementById("floatingToolbar"), download: document.getElementById("download") }, passwordOverlay: { dialog: document.getElementById("passwordDialog"), label: document.getElementById("passwordText"), input: document.getElementById("password"), submitButton: document.getElementById("passwordSubmit"), cancelButton: document.getElementById("passwordCancel") }, printContainer: document.getElementById("printContainer") }; } function webViewerLoad() { const config = getViewerConfiguration(); PDFViewerApplication.run(config); } document.blockUnblockOnload?.(true); if (document.readyState === "interactive" || document.readyState === "complete") { webViewerLoad(); } else { document.addEventListener("DOMContentLoaded", webViewerLoad, true); } export { PDFViewerApplication, AppConstants as PDFViewerApplicationConstants, AppOptions as PDFViewerApplicationOptions };