diff options
Diffstat (limited to 'browser/extensions/screenshots/selector/uicontrol.js')
| -rw-r--r-- | browser/extensions/screenshots/selector/uicontrol.js | 901 |
1 files changed, 901 insertions, 0 deletions
diff --git a/browser/extensions/screenshots/selector/uicontrol.js b/browser/extensions/screenshots/selector/uicontrol.js new file mode 100644 index 0000000000..f3aff2c5c8 --- /dev/null +++ b/browser/extensions/screenshots/selector/uicontrol.js @@ -0,0 +1,901 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* globals log, catcher, util, ui, slides */ +/* globals shooter, callBackground, selectorLoader, assertIsTrusted, buildSettings, selection */ + +"use strict"; + +this.uicontrol = (function() { + const exports = {}; + + /** ******************************************************** + * selection + */ + + /* States: + + "crosshairs": + Nothing has happened, and the crosshairs will follow the movement of the mouse + "draggingReady": + The user has pressed the mouse button, but hasn't moved enough to create a selection + "dragging": + The user has pressed down a mouse button, and is dragging out an area far enough to show a selection + "selected": + The user has selected an area + "resizing": + The user is resizing the selection + "cancelled": + Everything has been cancelled + "previewing": + The user is previewing the full-screen/visible image + + A mousedown goes from crosshairs to dragging. + A mouseup goes from dragging to selected + A click outside of the selection goes from selected to crosshairs + A click on one of the draggers goes from selected to resizing + + State variables: + + state (string, one of the above) + mousedownPos (object with x/y during draggingReady, shows where the selection started) + selectedPos (object with x/y/h/w during selected or dragging, gives the entire selection) + resizeDirection (string: top, topLeft, etc, during resizing) + resizeStartPos (x/y position where resizing started) + mouseupNoAutoselect (true if a mouseup in draggingReady should not trigger autoselect) + + */ + + const { watchFunction, watchPromise } = catcher; + + const MAX_PAGE_HEIGHT = buildSettings.maxImageHeight; + const MAX_PAGE_WIDTH = buildSettings.maxImageWidth; + // An autoselection smaller than these will be ignored entirely: + const MIN_DETECT_ABSOLUTE_HEIGHT = 10; + const MIN_DETECT_ABSOLUTE_WIDTH = 30; + // An autoselection smaller than these will not be preferred: + const MIN_DETECT_HEIGHT = 30; + const MIN_DETECT_WIDTH = 100; + // An autoselection bigger than either of these will be ignored: + const MAX_DETECT_HEIGHT = Math.max(window.innerHeight + 100, 700); + const MAX_DETECT_WIDTH = Math.max(window.innerWidth + 100, 1000); + // This is how close (in pixels) you can get to the edge of the window and then + // it will scroll: + const SCROLL_BY_EDGE = 20; + // This is how wide the inboard scrollbars are, generally 0 except on Mac + const SCROLLBAR_WIDTH = (window.navigator.platform.match(/Mac/i)) ? 17 : 0; + + + const { Selection } = selection; + const { sendEvent } = shooter; + const log = global.log; + + function round10(n) { + return Math.floor(n / 10) * 10; + } + + function eventOptionsForBox(box) { + return { + cd1: round10(Math.abs(box.bottom - box.top)), + cd2: round10(Math.abs(box.right - box.left)), + }; + } + + function eventOptionsForResize(boxStart, boxEnd) { + return { + cd1: round10( + (boxEnd.bottom - boxEnd.top) + - (boxStart.bottom - boxStart.top)), + cd2: round10( + (boxEnd.right - boxEnd.left) + - (boxStart.right - boxStart.left)), + }; + } + + function eventOptionsForMove(posStart, posEnd) { + return { + cd1: round10(posEnd.y - posStart.y), + cd2: round10(posEnd.x - posStart.x), + }; + } + + function downloadShot() { + const previewDataUrl = (captureType === "fullPageTruncated") ? null : dataUrl; + // Downloaded shots don't have dimension limits + removeDimensionLimitsOnFullPageShot(); + shooter.downloadShot(selectedPos, previewDataUrl, captureType); + } + + function copyShot() { + const previewDataUrl = (captureType === "fullPageTruncated") ? null : dataUrl; + // Copied shots don't have dimension limits + removeDimensionLimitsOnFullPageShot(); + shooter.copyShot(selectedPos, previewDataUrl, captureType); + } + + /** ********************************************* + * State and stateHandlers infrastructure + */ + + // This enumerates all the anchors on the selection, and what part of the + // selection they move: + const movements = { + topLeft: ["x1", "y1"], + top: [null, "y1"], + topRight: ["x2", "y1"], + left: ["x1", null], + right: ["x2", null], + bottomLeft: ["x1", "y2"], + bottom: [null, "y2"], + bottomRight: ["x2", "y2"], + move: ["*", "*"], + }; + + const doNotAutoselectTags = { + H1: true, + H2: true, + H3: true, + H4: true, + H5: true, + H6: true, + }; + + let captureType; + + function removeDimensionLimitsOnFullPageShot() { + if (captureType === "fullPageTruncated") { + captureType = "fullPage"; + selectedPos = new Selection( + 0, 0, + getDocumentWidth(), getDocumentHeight()); + } + } + + const standardDisplayCallbacks = { + cancel: () => { + sendEvent("cancel-shot", "overlay-cancel-button"); + exports.deactivate(); + }, download: () => { + sendEvent("download-shot", "overlay-download-button"); + downloadShot(); + }, copy: () => { + sendEvent("copy-shot", "overlay-copy-button"); + copyShot(); + }, + }; + + const standardOverlayCallbacks = { + cancel: () => { + sendEvent("cancel-shot", "cancel-preview-button"); + exports.deactivate(); + }, + onClickCancel: e => { + sendEvent("cancel-shot", "cancel-selection-button"); + e.preventDefault(); + e.stopPropagation(); + exports.deactivate(); + }, + onOpenMyShots: () => { + sendEvent("goto-myshots", "selection-button"); + callBackground("openMyShots") + .then(() => exports.deactivate()) + .catch(() => { + // Handled in communication.js + }); + }, + onClickVisible: () => { + sendEvent("capture-visible", "selection-button"); + selectedPos = new Selection( + window.scrollX, window.scrollY, + window.scrollX + document.documentElement.clientWidth, window.scrollY + window.innerHeight); + captureType = "visible"; + setState("previewing"); + }, + onClickFullPage: () => { + sendEvent("capture-full-page", "selection-button"); + captureType = "fullPage"; + const width = getDocumentWidth(); + if (width > MAX_PAGE_WIDTH) { + captureType = "fullPageTruncated"; + } + const height = getDocumentHeight(); + if (height > MAX_PAGE_HEIGHT) { + captureType = "fullPageTruncated"; + } + selectedPos = new Selection( + 0, 0, + width, height); + setState("previewing"); + }, + onDownloadPreview: () => { + sendEvent(`download-${captureType.replace(/([a-z])([A-Z])/g, "$1-$2").toLowerCase()}`, "download-preview-button"); + downloadShot(); + }, + onCopyPreview: () => { + sendEvent(`copy-${captureType.replace(/([a-z])([A-Z])/g, "$1-$2").toLowerCase()}`, "copy-preview-button"); + copyShot(); + }, + }; + + /** Holds all the objects that handle events for each state: */ + const stateHandlers = {}; + + function getState() { + return getState.state; + } + getState.state = "cancel"; + + function setState(s) { + if (!stateHandlers[s]) { + throw new Error("Unknown state: " + s); + } + const cur = getState.state; + const handler = stateHandlers[cur]; + if (handler.end) { + handler.end(); + } + getState.state = s; + if (stateHandlers[s].start) { + stateHandlers[s].start(); + } + } + + /** Various values that the states use: */ + let mousedownPos; + let selectedPos; + let resizeDirection; + let resizeStartPos; + let resizeStartSelected; + let resizeHasMoved; + let mouseupNoAutoselect = false; + let autoDetectRect; + + /** Represents a single x/y point, typically for a mouse click that doesn't have a drag: */ + class Pos { + constructor(x, y) { + this.x = x; + this.y = y; + } + + elementFromPoint() { + return ui.iframe.getElementFromPoint( + this.x - window.pageXOffset, + this.y - window.pageYOffset + ); + } + + distanceTo(x, y) { + return Math.sqrt(Math.pow(this.x - x, 2) + Math.pow(this.y - y, 2)); + } + } + + /** ********************************************* + * all stateHandlers + */ + + let dataUrl; + + stateHandlers.previewing = { + start() { + shooter.preview(selectedPos, captureType); + }, + }; + + stateHandlers.crosshairs = { + + cachedEl: null, + + start() { + selectedPos = mousedownPos = null; + this.cachedEl = null; + watchPromise(ui.iframe.display(installHandlersOnDocument, standardOverlayCallbacks).then(() => { + ui.iframe.usePreSelection(); + ui.Box.remove(); + })); + }, + + mousemove(event) { + ui.PixelDimensions.display(event.pageX, event.pageY, event.pageX, event.pageY); + if (event.target.classList && + (!event.target.classList.contains("preview-overlay"))) { + // User is hovering over a toolbar button or control + autoDetectRect = null; + if (this.cachedEl) { + this.cachedEl = null; + } + ui.HoverBox.hide(); + return; + } + let el; + if (event.target.classList && event.target.classList.contains("preview-overlay")) { + // The hover is on the overlay, so we need to figure out the real element + el = ui.iframe.getElementFromPoint( + event.pageX + window.scrollX - window.pageXOffset, + event.pageY + window.scrollY - window.pageYOffset + ); + const xpos = Math.floor(10 * (event.pageX - window.innerWidth / 2) / window.innerWidth); + const ypos = Math.floor(10 * (event.pageY - window.innerHeight / 2) / window.innerHeight); + + for (let i = 0; i < 2; i++) { + const move = `translate(${xpos}px, ${ypos}px)`; + event.target.getElementsByClassName("eyeball")[i].style.transform = move; + } + } else { + // The hover is on the element we care about, so we use that + el = event.target; + } + if (this.cachedEl && this.cachedEl === el) { + // Still hovering over the same element + return; + } + this.cachedEl = el; + this.setAutodetectBasedOnElement(el); + }, + + setAutodetectBasedOnElement(el) { + let lastRect; + let lastNode; + let rect; + let attemptExtend = false; + let node = el; + while (node) { + rect = Selection.getBoundingClientRect(node); + if (!rect) { + rect = lastRect; + break; + } + if (rect.width < MIN_DETECT_WIDTH || rect.height < MIN_DETECT_HEIGHT) { + // Avoid infinite loop for elements with zero or nearly zero height, + // like non-clearfixed float parents with or without borders. + break; + } + if (rect.width > MAX_DETECT_WIDTH || rect.height > MAX_DETECT_HEIGHT) { + // Then the last rectangle is better + rect = lastRect; + attemptExtend = true; + break; + } + if (rect.width >= MIN_DETECT_WIDTH && rect.height >= MIN_DETECT_HEIGHT) { + if (!doNotAutoselectTags[node.tagName]) { + break; + } + } + lastRect = rect; + lastNode = node; + node = node.parentNode; + } + if (rect && node) { + const evenBetter = this.evenBetterElement(node, rect); + if (evenBetter) { + node = lastNode = evenBetter; + rect = Selection.getBoundingClientRect(evenBetter); + attemptExtend = false; + } + } + if (rect && attemptExtend) { + let extendNode = lastNode.nextSibling; + while (extendNode) { + if (extendNode.nodeType === document.ELEMENT_NODE) { + break; + } + extendNode = extendNode.nextSibling; + if (!extendNode) { + const parent = lastNode.parentNode; + for (let i = 0; i < parent.childNodes.length; i++) { + if (parent.childNodes[i] === lastNode) { + extendNode = parent.childNodes[i + 1]; + } + } + } + } + if (extendNode) { + const extendSelection = Selection.getBoundingClientRect(extendNode); + const extendRect = rect.union(extendSelection); + if (extendRect.width <= MAX_DETECT_WIDTH && extendRect.height <= MAX_DETECT_HEIGHT) { + rect = extendRect; + } + } + } + + if (rect && (rect.width < MIN_DETECT_ABSOLUTE_WIDTH || rect.height < MIN_DETECT_ABSOLUTE_HEIGHT)) { + rect = null; + } + if (!rect) { + ui.HoverBox.hide(); + } else { + ui.HoverBox.display(rect); + } + autoDetectRect = rect; + }, + + /** When we find an element, maybe there's one that's just a little bit better... */ + evenBetterElement(node, origRect) { + let el = node.parentNode; + const ELEMENT_NODE = document.ELEMENT_NODE; + while (el && el.nodeType === ELEMENT_NODE) { + if (!el.getAttribute) { + return null; + } + const role = el.getAttribute("role"); + if (role === "article" || (el.className && typeof el.className === "string" && el.className.search("tweet ") !== -1)) { + const rect = Selection.getBoundingClientRect(el); + if (!rect) { + return null; + } + if (rect.width <= MAX_DETECT_WIDTH && rect.height <= MAX_DETECT_HEIGHT) { + return el; + } + return null; + } + el = el.parentNode; + } + return null; + }, + + mousedown(event) { + // FIXME: this is happening but we don't know why, we'll track it now + // but avoid popping up messages: + if (typeof ui === "undefined") { + const exc = new Error("Undefined ui in mousedown"); + exc.unloadTime = unloadTime; + exc.nowTime = Date.now(); + exc.noPopup = true; + exc.noReport = true; + throw exc; + } + if (ui.isHeader(event.target)) { + return undefined; + } + // If the pageX is greater than this, then probably it's an attempt to get + // to the scrollbar, or an actual scroll, and not an attempt to start the + // selection: + const maxX = window.innerWidth - SCROLLBAR_WIDTH; + if (event.pageX >= maxX) { + event.stopPropagation(); + event.preventDefault(); + return false; + } + + mousedownPos = new Pos(event.pageX + window.scrollX, event.pageY + window.scrollY); + setState("draggingReady"); + event.stopPropagation(); + event.preventDefault(); + return false; + }, + + end() { + ui.HoverBox.remove(); + ui.PixelDimensions.remove(); + }, + }; + + stateHandlers.draggingReady = { + minMove: 40, // px + minAutoImageWidth: 40, + minAutoImageHeight: 40, + maxAutoElementWidth: 800, + maxAutoElementHeight: 600, + + start() { + ui.iframe.usePreSelection(); + ui.Box.remove(); + }, + + mousemove(event) { + if (mousedownPos.distanceTo(event.pageX, event.pageY) > this.minMove) { + selectedPos = new Selection( + mousedownPos.x, + mousedownPos.y, + event.pageX + window.scrollX, + event.pageY + window.scrollY); + mousedownPos = null; + setState("dragging"); + } + }, + + mouseup(event) { + // If we don't get into "dragging" then we attempt an autoselect + if (mouseupNoAutoselect) { + sendEvent("cancel-selection", "selection-background-mousedown"); + setState("crosshairs"); + return false; + } + if (autoDetectRect) { + selectedPos = autoDetectRect; + selectedPos.x1 += window.scrollX; + selectedPos.y1 += window.scrollY; + selectedPos.x2 += window.scrollX; + selectedPos.y2 += window.scrollY; + autoDetectRect = null; + mousedownPos = null; + ui.iframe.useSelection(); + ui.Box.display(selectedPos, standardDisplayCallbacks); + sendEvent("make-selection", "selection-click", eventOptionsForBox(selectedPos)); + setState("selected"); + sendEvent("autoselect"); + } else { + sendEvent("no-selection", "no-element-found"); + setState("crosshairs"); + } + return undefined; + }, + + click(event) { + this.mouseup(event); + }, + + findGoodEl() { + let el = mousedownPos.elementFromPoint(); + if (!el) { + return null; + } + const isGoodEl = (el) => { + if (el.nodeType !== document.ELEMENT_NODE) { + return false; + } + if (el.tagName === "IMG") { + const rect = el.getBoundingClientRect(); + return rect.width >= this.minAutoImageWidth && rect.height >= this.minAutoImageHeight; + } + const display = window.getComputedStyle(el).display; + if (["block", "inline-block", "table"].includes(display)) { + return true; + // FIXME: not sure if this is useful: + // let rect = el.getBoundingClientRect(); + // return rect.width <= this.maxAutoElementWidth && rect.height <= this.maxAutoElementHeight; + } + return false; + }; + while (el) { + if (isGoodEl(el)) { + return el; + } + el = el.parentNode; + } + return null; + }, + + end() { + mouseupNoAutoselect = false; + }, + + }; + + stateHandlers.dragging = { + + start() { + ui.iframe.useSelection(); + ui.Box.display(selectedPos); + }, + + mousemove(event) { + selectedPos.x2 = util.truncateX(event.pageX); + selectedPos.y2 = util.truncateY(event.pageY); + scrollIfByEdge(event.pageX, event.pageY); + ui.Box.display(selectedPos); + ui.PixelDimensions.display(event.pageX, event.pageY, selectedPos.width, selectedPos.height); + }, + + mouseup(event) { + selectedPos.x2 = util.truncateX(event.pageX); + selectedPos.y2 = util.truncateY(event.pageY); + ui.Box.display(selectedPos, standardDisplayCallbacks); + sendEvent( + "make-selection", "selection-drag", + eventOptionsForBox({ + top: selectedPos.y1, + bottom: selectedPos.y2, + left: selectedPos.x1, + right: selectedPos.x2, + })); + setState("selected"); + }, + + end() { + ui.PixelDimensions.remove(); + }, + }; + + stateHandlers.selected = { + start() { + ui.iframe.useSelection(); + }, + + mousedown(event) { + const target = event.target; + if (target.tagName === "HTML") { + // This happens when you click on the scrollbar + return undefined; + } + const direction = ui.Box.draggerDirection(target); + if (direction) { + sendEvent("start-resize-selection", "handle"); + stateHandlers.resizing.startResize(event, direction); + } else if (ui.Box.isSelection(target)) { + sendEvent("start-move-selection", "selection"); + stateHandlers.resizing.startResize(event, "move"); + } else if (!ui.Box.isControl(target)) { + mousedownPos = new Pos(event.pageX, event.pageY); + setState("crosshairs"); + } + event.preventDefault(); + return false; + }, + }; + + stateHandlers.resizing = { + start() { + ui.iframe.useSelection(); + selectedPos.sortCoords(); + }, + + startResize(event, direction) { + selectedPos.sortCoords(); + resizeDirection = direction; + resizeStartPos = new Pos(event.pageX, event.pageY); + resizeStartSelected = selectedPos.clone(); + resizeHasMoved = false; + setState("resizing"); + }, + + mousemove(event) { + this._resize(event); + if (resizeDirection !== "move") { + ui.PixelDimensions.display(event.pageX, event.pageY, selectedPos.width, selectedPos.height); + } + return false; + }, + + mouseup(event) { + this._resize(event); + sendEvent("selection-resized"); + ui.Box.display(selectedPos, standardDisplayCallbacks); + if (resizeHasMoved) { + if (resizeDirection === "move") { + const startPos = new Pos(resizeStartSelected.left, resizeStartSelected.top); + const endPos = new Pos(selectedPos.left, selectedPos.top); + sendEvent( + "move-selection", "mouseup", + eventOptionsForMove(startPos, endPos)); + } else { + sendEvent( + "resize-selection", "mouseup", + eventOptionsForResize(resizeStartSelected, selectedPos)); + } + } else if (resizeDirection === "move") { + sendEvent("keep-resize-selection", "mouseup"); + } else { + sendEvent("keep-move-selection", "mouseup"); + } + setState("selected"); + }, + + _resize(event) { + const diffX = event.pageX - resizeStartPos.x; + const diffY = event.pageY - resizeStartPos.y; + const movement = movements[resizeDirection]; + if (movement[0]) { + let moveX = movement[0]; + moveX = moveX === "*" ? ["x1", "x2"] : [moveX]; + for (const moveDir of moveX) { + selectedPos[moveDir] = util.truncateX(resizeStartSelected[moveDir] + diffX); + } + } + if (movement[1]) { + let moveY = movement[1]; + moveY = moveY === "*" ? ["y1", "y2"] : [moveY]; + for (const moveDir of moveY) { + selectedPos[moveDir] = util.truncateY(resizeStartSelected[moveDir] + diffY); + } + } + if (diffX || diffY) { + resizeHasMoved = true; + } + scrollIfByEdge(event.pageX, event.pageY); + ui.Box.display(selectedPos); + }, + + end() { + resizeDirection = resizeStartPos = resizeStartSelected = null; + selectedPos.sortCoords(); + ui.PixelDimensions.remove(); + }, + }; + + stateHandlers.cancel = { + start() { + ui.iframe.hide(); + ui.Box.remove(); + }, + }; + + function getDocumentWidth() { + return Math.max( + document.body && document.body.clientWidth, + document.documentElement.clientWidth, + document.body && document.body.scrollWidth, + document.documentElement.scrollWidth); + } + function getDocumentHeight() { + return Math.max( + document.body && document.body.clientHeight, + document.documentElement.clientHeight, + document.body && document.body.scrollHeight, + document.documentElement.scrollHeight); + } + + function scrollIfByEdge(pageX, pageY) { + const top = window.scrollY; + const bottom = top + window.innerHeight; + const left = window.scrollX; + const right = left + window.innerWidth; + if (pageY + SCROLL_BY_EDGE >= bottom && bottom < getDocumentHeight()) { + window.scrollBy(0, SCROLL_BY_EDGE); + } else if (pageY - SCROLL_BY_EDGE <= top) { + window.scrollBy(0, -SCROLL_BY_EDGE); + } + if (pageX + SCROLL_BY_EDGE >= right && right < getDocumentWidth()) { + window.scrollBy(SCROLL_BY_EDGE, 0); + } else if (pageX - SCROLL_BY_EDGE <= left) { + window.scrollBy(-SCROLL_BY_EDGE, 0); + } + } + + /** ********************************************* + * Selection communication + */ + + exports.activate = function() { + if (!document.body) { + callBackground("abortStartShot"); + const tagName = String(document.documentElement.tagName || "").replace(/[^a-z0-9]/ig, ""); + sendEvent("abort-start-shot", `document-is-${tagName}`); + selectorLoader.unloadModules(); + return; + } + if (isFrameset()) { + callBackground("abortStartShot"); + sendEvent("abort-start-shot", "frame-page"); + selectorLoader.unloadModules(); + return; + } + addHandlers(); + setState("crosshairs"); + }; + + function isFrameset() { + return document.body.tagName === "FRAMESET"; + } + + exports.deactivate = function() { + try { + sendEvent("internal", "deactivate"); + setState("cancel"); + callBackground("closeSelector"); + selectorLoader.unloadModules(); + } catch (e) { + log.error("Error in deactivate", e); + // Sometimes this fires so late that the document isn't available + // We don't care about the exception, so we swallow it here + } + }; + + let unloadTime = 0; + + exports.unload = function() { + // Note that ui.unload() will be called on its own + unloadTime = Date.now(); + removeHandlers(); + }; + + /** ********************************************* + * Event handlers + */ + + const primedDocumentHandlers = new Map(); + let registeredDocumentHandlers = []; + + function addHandlers() { + ["mouseup", "mousedown", "mousemove", "click"].forEach((eventName) => { + const fn = watchFunction(assertIsTrusted((function(eventName, event) { + if (typeof event.button === "number" && event.button !== 0) { + // Not a left click + return undefined; + } + if (event.ctrlKey || event.shiftKey || event.altKey || event.metaKey) { + // Modified click of key + return undefined; + } + const state = getState(); + const handler = stateHandlers[state]; + if (handler[eventName]) { + return handler[eventName](event); + } + return undefined; + }).bind(null, eventName))); + primedDocumentHandlers.set(eventName, fn); + }); + primedDocumentHandlers.set("keyup", watchFunction(assertIsTrusted(keyupHandler))); + primedDocumentHandlers.set("keydown", watchFunction(assertIsTrusted(keydownHandler))); + window.document.addEventListener("visibilitychange", visibilityChangeHandler); + window.addEventListener("beforeunload", beforeunloadHandler); + } + + let mousedownSetOnDocument = false; + + function installHandlersOnDocument(docObj) { + for (const [eventName, handler] of primedDocumentHandlers) { + const watchHandler = watchFunction(handler); + const useCapture = eventName !== "keyup"; + docObj.addEventListener(eventName, watchHandler, useCapture); + registeredDocumentHandlers.push({name: eventName, doc: docObj, handler: watchHandler, useCapture}); + } + if (!mousedownSetOnDocument) { + const mousedownHandler = primedDocumentHandlers.get("mousedown"); + document.addEventListener("mousedown", mousedownHandler, true); + registeredDocumentHandlers.push({name: "mousedown", doc: document, handler: mousedownHandler, useCapture: true}); + mousedownSetOnDocument = true; + } + } + + function beforeunloadHandler() { + sendEvent("cancel-shot", "tab-load"); + exports.deactivate(); + } + + function keydownHandler(event) { + // In MacOS, the keyup event for 'c' is not fired when performing cmd+c. + if (event.code === "KeyC" && (event.ctrlKey || event.metaKey) + && ["previewing", "selected"].includes(getState.state)) { + catcher.watchPromise(callBackground("getPlatformOs").then(os => { + if ((event.ctrlKey && os !== "mac") || + (event.metaKey && os === "mac")) { + sendEvent("copy-shot", "keyboard-copy"); + copyShot(); + } + })); + } + } + + function keyupHandler(event) { + if (event.shiftKey || event.altKey || event.ctrlKey || event.metaKey) { + // unused modifier keys + return; + } + if ((event.key || event.code) === "Escape") { + sendEvent("cancel-shot", "keyboard-escape"); + exports.deactivate(); + } + // Enter to trigger Save or Download by default. But if the user tabbed to + // select another button, then we do not want this. + if ((event.key || event.code) === "Enter" + && getState.state === "selected" + && ui.iframe.document().activeElement.tagName === "BODY") { + sendEvent("download-shot", "keyboard-enter"); + downloadShot(); + } + } + + function visibilityChangeHandler(event) { + // The document is the event target + if (event.target.hidden) { + sendEvent("internal", "document-hidden"); + } + } + + function removeHandlers() { + window.removeEventListener("beforeunload", beforeunloadHandler); + window.document.removeEventListener("visibilitychange", visibilityChangeHandler); + for (const {name, doc, handler, useCapture} of registeredDocumentHandlers) { + doc.removeEventListener(name, handler, !!useCapture); + } + registeredDocumentHandlers = []; + } + + catcher.watchFunction(exports.activate)(); + + return exports; +})(); + +null; |