Adding upstream version 125.0.1.upstream/125.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 768 insertions, 455 deletions

diff --git a/toolkit/components/pdfjs/content/web/images/gv-toolbarButton-openinapp.svg b/toolkit/components/pdfjs/content/web/images/gv-toolbarButton-openinapp.svg
deleted file mode 100644
index 80ec891aad..0000000000
--- a/toolkit/components/pdfjs/content/web/images/gv-toolbarButton-openinapp.svg
+++ /dev/null
@@ -1,11 +0,0 @@
-<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M4 4.5H6.5V7H4V4.5Z" fill="black"/>
-<path d="M6.5 10.5H4V13H6.5V10.5Z" fill="black"/>
-<path d="M13.25 10.5H10.75V13H13.25V10.5Z" fill="black"/>
-<path d="M17.5 10.5H20V13H17.5V10.5Z" fill="black"/>
-<path d="M6.5 16.5H4V19H6.5V16.5Z" fill="black"/>
-<path d="M10.75 16.5H13.25V19H10.75V16.5Z" fill="black"/>
-<path d="M20 16.5H17.5V19H20V16.5Z" fill="black"/>
-<path d="M13.25 4.5H10.75V7H13.25V4.5Z" fill="black"/>
-<path d="M17.5 4.5H20V7H17.5V4.5Z" fill="black"/>
-</svg>
diff --git a/toolkit/components/pdfjs/content/web/viewer-geckoview.css b/toolkit/components/pdfjs/content/web/viewer-geckoview.css
index 16e27e4eac..c336b4f7fc 100644
--- a/toolkit/components/pdfjs/content/web/viewer-geckoview.css
+++ b/toolkit/components/pdfjs/content/web/viewer-geckoview.css
@@ -23,7 +23,6 @@
   text-size-adjust:none;
   forced-color-adjust:none;
   transform-origin:0 0;
-  z-index:2;
   caret-color:CanvasText;
 
   &.highlighting{
@@ -162,7 +161,6 @@
   left:0;
   pointer-events:none;
   transform-origin:0 0;
-  z-index:3;
 
   &[data-main-rotation="90"] .norotate{
     transform:rotate(270deg) translateX(-100%);
@@ -817,7 +815,6 @@
   overflow:hidden;
   width:100%;
   height:100%;
-  z-index:1;
 }
 
 .pdfViewer .page{
@@ -947,7 +944,6 @@
   --toolbar-fg-color:#15141a;
 
   --toolbarButton-download-icon:url(images/gv-toolbarButton-download.svg);
-  --toolbarButton-openinapp-icon:url(images/gv-toolbarButton-openinapp.svg);
 }
 
 :root:dir(rtl){
@@ -1140,10 +1136,6 @@ body{
   mask-image:var(--toolbarButton-download-icon);
 }
 
-#openInApp::before{
-  mask-image:var(--toolbarButton-openinapp-icon);
-}
-
 .dialogButton{
   width:auto;
   margin:3px 4px 2px !important;
diff --git a/toolkit/components/pdfjs/content/web/viewer-geckoview.html b/toolkit/components/pdfjs/content/web/viewer-geckoview.html
index 1c0296a481..ba52e298ed 100644
--- a/toolkit/components/pdfjs/content/web/viewer-geckoview.html
+++ b/toolkit/components/pdfjs/content/web/viewer-geckoview.html
@@ -45,9 +45,6 @@ See https://github.com/adobe-type-tools/cmap-resources
           <button id="download" class="toolbarButton" title="Download" tabindex="31" data-l10n-id="pdfjs-download-button">
             <span data-l10n-id="pdfjs-download-button-label">Download</span>
           </button>
-          <button id="openInApp" class="toolbarButton" title="Open in app" tabindex="32" data-l10n-id="pdfjs-open-in-app-button">
-            <span data-l10n-id="pdfjs-open-in-app-button-label">Open in app</span>
-          </button>
         </div>
 
         <div id="viewerContainer" tabindex="0">
diff --git a/toolkit/components/pdfjs/content/web/viewer-geckoview.mjs b/toolkit/components/pdfjs/content/web/viewer-geckoview.mjs
index 8ba8147a9f..866c4a405a 100644
--- a/toolkit/components/pdfjs/content/web/viewer-geckoview.mjs
+++ b/toolkit/components/pdfjs/content/web/viewer-geckoview.mjs
@@ -606,6 +606,10 @@ const defaultOptions = {
     value: false,
     kind: OptionKind.VIEWER + OptionKind.PREFERENCE
   },
+  enableHighlightFloatingButton: {
+    value: false,
+    kind: OptionKind.VIEWER + OptionKind.PREFERENCE
+  },
   enableML: {
     value: false,
     kind: OptionKind.VIEWER + OptionKind.PREFERENCE
@@ -651,7 +655,7 @@ const defaultOptions = {
     kind: OptionKind.VIEWER
   },
   maxCanvasPixels: {
-    value: 16777216,
+    value: 2 ** 25,
     kind: OptionKind.VIEWER
   },
   forcePageColors: {
@@ -768,28 +772,20 @@ class AppOptions {
   constructor() {
     throw new Error("Cannot initialize AppOptions.");
   }
+  static getCompat(name) {
+    return compatibilityParams[name] ?? undefined;
+  }
   static get(name) {
-    const userOption = userOptions[name];
-    if (userOption !== undefined) {
-      return userOption;
-    }
-    const defaultOption = defaultOptions[name];
-    if (defaultOption !== undefined) {
-      return compatibilityParams[name] ?? defaultOption.value;
-    }
-    return undefined;
+    return userOptions[name] ?? compatibilityParams[name] ?? defaultOptions[name]?.value ?? undefined;
   }
-  static getAll(kind = null) {
+  static getAll(kind = null, defaultOnly = false) {
     const options = Object.create(null);
     for (const name in defaultOptions) {
       const defaultOption = defaultOptions[name];
-      if (kind) {
-        if (!(kind & defaultOption.kind)) {
-          continue;
-        }
+      if (kind && !(kind & defaultOption.kind)) {
+        continue;
       }
-      const userOption = userOptions[name];
-      options[name] = userOption !== undefined ? userOption : compatibilityParams[name] ?? defaultOption.value;
+      options[name] = defaultOnly ? defaultOption.value : userOptions[name] ?? compatibilityParams[name] ?? defaultOption.value;
     }
     return options;
   }
@@ -1112,30 +1108,7 @@ class PDFLinkService {
     if (pdfDocument !== this.pdfDocument) {
       return;
     }
-    let operator;
-    for (const elem of action.state) {
-      switch (elem) {
-        case "ON":
-        case "OFF":
-        case "Toggle":
-          operator = elem;
-          continue;
-      }
-      switch (operator) {
-        case "ON":
-          optionalContentConfig.setVisibility(elem, true);
-          break;
-        case "OFF":
-          optionalContentConfig.setVisibility(elem, false);
-          break;
-        case "Toggle":
-          const group = optionalContentConfig.getGroup(elem);
-          if (group) {
-            optionalContentConfig.setVisibility(elem, !group.visible);
-          }
-          break;
-      }
-    }
+    optionalContentConfig.setOCGState(action);
     this.pdfViewer.optionalContentConfigPromise = Promise.resolve(optionalContentConfig);
   }
   cachePageRef(pageNum, pageRef) {
@@ -1423,7 +1396,7 @@ class BaseExternalServices {
   }
   updateFindControlState(data) {}
   updateFindMatchesCount(data) {}
-  initPassiveLoading(callbacks) {}
+  initPassiveLoading() {}
   reportTelemetry(data) {}
   async createL10n() {
     throw new Error("Not implemented: createL10n");
@@ -1440,6 +1413,16 @@ class BaseExternalServices {
 ;// CONCATENATED MODULE: ./web/preferences.js
 
 class BasePreferences {
+  #browserDefaults = Object.freeze({
+    canvasMaxAreaInBytes: -1,
+    isInAutomation: false,
+    supportsCaretBrowsingMode: false,
+    supportsDocumentFonts: true,
+    supportsIntegratedFind: false,
+    supportsMouseWheelZoomCtrlKey: true,
+    supportsMouseWheelZoomMetaKey: true,
+    supportsPinchToZoom: true
+  });
   #defaults = Object.freeze({
     annotationEditorMode: 0,
     annotationMode: 2,
@@ -1448,6 +1431,7 @@ class BasePreferences {
     defaultZoomValue: "",
     disablePageLabels: false,
     enableHighlightEditor: false,
+    enableHighlightFloatingButton: false,
     enableML: false,
     enablePermissions: false,
     enablePrintAutoRotate: true,
@@ -1482,26 +1466,19 @@ class BasePreferences {
       browserPrefs,
       prefs
     }) => {
-      const BROWSER_PREFS = {
-        canvasMaxAreaInBytes: -1,
-        isInAutomation: false,
-        supportsCaretBrowsingMode: false,
-        supportsDocumentFonts: true,
-        supportsIntegratedFind: false,
-        supportsMouseWheelZoomCtrlKey: true,
-        supportsMouseWheelZoomMetaKey: true,
-        supportsPinchToZoom: true
-      };
       const options = Object.create(null);
-      for (const [name, defaultVal] of Object.entries(BROWSER_PREFS)) {
+      for (const [name, val] of Object.entries(this.#browserDefaults)) {
         const prefVal = browserPrefs?.[name];
-        options[name] = typeof prefVal === typeof defaultVal ? prefVal : defaultVal;
+        options[name] = typeof prefVal === typeof val ? prefVal : val;
       }
-      for (const [name, defaultVal] of Object.entries(this.#defaults)) {
+      for (const [name, val] of Object.entries(this.#defaults)) {
         const prefVal = prefs?.[name];
-        options[name] = this.#prefs[name] = typeof prefVal === typeof defaultVal ? prefVal : defaultVal;
+        options[name] = this.#prefs[name] = typeof prefVal === typeof val ? prefVal : val;
       }
       AppOptions.setAll(options, true);
+      window.addEventListener("updatedPreference", evt => {
+        this.#updatePref(evt.detail);
+      });
     });
   }
   async _writeToStorage(prefObj) {
@@ -1510,6 +1487,24 @@ class BasePreferences {
   async _readFromStorage(prefObj) {
     throw new Error("Not implemented: _readFromStorage");
   }
+  #updatePref({
+    name,
+    value
+  }) {
+    if (name in this.#browserDefaults) {
+      if (typeof value !== typeof this.#browserDefaults[name]) {
+        return;
+      }
+    } else if (name in this.#defaults) {
+      if (typeof value !== typeof this.#defaults[name]) {
+        return;
+      }
+      this.#prefs[name] = value;
+    } else {
+      return;
+    }
+    AppOptions.set(name, value);
+  }
   async reset() {
     throw new Error("Please use `about:config` to change preferences.");
   }
@@ -1517,12 +1512,7 @@ class BasePreferences {
     throw new Error("Please use `about:config` to change preferences.");
   }
   async get(name) {
-    await this.#initializedPromise;
-    const defaultValue = this.#defaults[name];
-    if (defaultValue === undefined) {
-      throw new Error(`Get preference: "${name}" is undefined.`);
-    }
-    return this.#prefs[name] ?? defaultValue;
+    throw new Error("Not implemented: get");
   }
   get initializedPromise() {
     return this.#initializedPromise;
@@ -1805,8 +1795,7 @@ class Preferences extends BasePreferences {
           try {
             const hasUnchangedAnnotations = pdfDocument.annotationStorage.size === 0;
             const hasWillPrint = pdfViewer.enableScripting && !!(await pdfDocument.getJSActions())?.WillPrint;
-            const hasUnchangedOptionalContent = (await pdfViewer.optionalContentConfigPromise).hasInitialVisibility;
-            result = hasUnchangedAnnotations && !hasWillPrint && hasUnchangedOptionalContent;
+            result = hasUnchangedAnnotations && !hasWillPrint;
           } catch {
             console.warn("Unable to check if the document can be downloaded.");
           }
@@ -1860,7 +1849,7 @@ class ExternalServices extends BaseExternalServices {
   updateFindMatchesCount(data) {
     FirefoxCom.request("updateFindMatchesCount", data);
   }
-  initPassiveLoading(callbacks) {
+  initPassiveLoading() {
     let pdfDataRangeTransport;
     window.addEventListener("message", function windowMessage(e) {
       if (e.source !== null) {
@@ -1874,11 +1863,13 @@ class ExternalServices extends BaseExternalServices {
       switch (args.pdfjsLoadAction) {
         case "supportsRangedLoading":
           if (args.done && !args.data) {
-            callbacks.onError();
+            viewerApp._documentError(null);
             break;
           }
           pdfDataRangeTransport = new FirefoxComDataRangeTransport(args.length, args.data, args.done, args.filename);
-          callbacks.onOpenWithTransport(pdfDataRangeTransport);
+          viewerApp.open({
+            range: pdfDataRangeTransport
+          });
           break;
         case "range":
           pdfDataRangeTransport.onDataRange(args.begin, args.chunk);
@@ -1894,21 +1885,26 @@ class ExternalServices extends BaseExternalServices {
           pdfDataRangeTransport?.onDataProgressiveDone();
           break;
         case "progress":
-          callbacks.onProgress(args.loaded, args.total);
+          viewerApp.progress(args.loaded / args.total);
           break;
         case "complete":
           if (!args.data) {
-            callbacks.onError(args.errorCode);
+            viewerApp._documentError(null, {
+              message: args.errorCode
+            });
             break;
           }
-          callbacks.onOpenWithData(args.data, args.filename);
+          viewerApp.open({
+            data: args.data,
+            filename: args.filename
+          });
           break;
       }
     });
     FirefoxCom.request("initPassiveLoading", null);
   }
   reportTelemetry(data) {
-    FirefoxCom.request("reportTelemetry", JSON.stringify(data));
+    FirefoxCom.request("reportTelemetry", data);
   }
   updateEditorStates(data) {
     FirefoxCom.request("updateEditorStates", data);
@@ -3671,14 +3667,15 @@ class FirefoxPrintService {
     pagesOverview,
     printContainer,
     printResolution,
-    optionalContentConfigPromise = null,
     printAnnotationStoragePromise = null
   }) {
     this.pdfDocument = pdfDocument;
     this.pagesOverview = pagesOverview;
     this.printContainer = printContainer;
     this._printResolution = printResolution || 150;
-    this._optionalContentConfigPromise = optionalContentConfigPromise || pdfDocument.getOptionalContentConfig();
+    this._optionalContentConfigPromise = pdfDocument.getOptionalContentConfig({
+      intent: "print"
+    });
     this._printAnnotationStoragePromise = printAnnotationStoragePromise || Promise.resolve();
   }
   layout() {
@@ -4206,10 +4203,10 @@ class PDFScriptingManager {
 class AnnotationEditorLayerBuilder {
   #annotationLayer = null;
   #drawLayer = null;
+  #onAppend = null;
   #textLayer = null;
   #uiManager;
   constructor(options) {
-    this.pageDiv = options.pageDiv;
     this.pdfPage = options.pdfPage;
     this.accessibilityManager = options.accessibilityManager;
     this.l10n = options.l10n;
@@ -4220,6 +4217,7 @@ class AnnotationEditorLayerBuilder {
     this.#annotationLayer = options.annotationLayer || null;
     this.#textLayer = options.textLayer || null;
     this.#drawLayer = options.drawLayer || null;
+    this.#onAppend = options.onAppend || null;
   }
   async render(viewport, intent = "display") {
     if (intent !== "display") {
@@ -4240,10 +4238,9 @@ class AnnotationEditorLayerBuilder {
     }
     const div = this.div = document.createElement("div");
     div.className = "annotationEditorLayer";
-    div.tabIndex = 0;
     div.hidden = true;
     div.dir = this.#uiManager.direction;
-    this.pageDiv.append(div);
+    this.#onAppend?.(div);
     this.annotationEditorLayer = new AnnotationEditorLayer({
       uiManager: this.#uiManager,
       div,
@@ -4269,9 +4266,7 @@ class AnnotationEditorLayerBuilder {
     if (!this.div) {
       return;
     }
-    this.pageDiv = null;
     this.annotationEditorLayer.destroy();
-    this.div.remove();
   }
   hide() {
     if (!this.div) {
@@ -4280,7 +4275,7 @@ class AnnotationEditorLayerBuilder {
     this.div.hidden = true;
   }
   show() {
-    if (!this.div || this.annotationEditorLayer.isEmpty) {
+    if (!this.div || this.annotationEditorLayer.isInvisible) {
       return;
     }
     this.div.hidden = false;
@@ -4291,9 +4286,9 @@ class AnnotationEditorLayerBuilder {
 
 
 class AnnotationLayerBuilder {
+  #onAppend = null;
   #onPresentationModeChanged = null;
   constructor({
-    pageDiv,
     pdfPage,
     linkService,
     downloadManager,
@@ -4304,9 +4299,9 @@ class AnnotationLayerBuilder {
     hasJSActionsPromise = null,
     fieldObjectsPromise = null,
     annotationCanvasMap = null,
-    accessibilityManager = null
+    accessibilityManager = null,
+    onAppend = null
   }) {
-    this.pageDiv = pageDiv;
     this.pdfPage = pdfPage;
     this.linkService = linkService;
     this.downloadManager = downloadManager;
@@ -4318,6 +4313,7 @@ class AnnotationLayerBuilder {
     this._fieldObjectsPromise = fieldObjectsPromise || Promise.resolve(null);
     this._annotationCanvasMap = annotationCanvasMap;
     this._accessibilityManager = accessibilityManager;
+    this.#onAppend = onAppend;
     this.annotationLayer = null;
     this.div = null;
     this._cancelled = false;
@@ -4343,7 +4339,7 @@ class AnnotationLayerBuilder {
     }
     const div = this.div = document.createElement("div");
     div.className = "annotationLayer";
-    this.pageDiv.append(div);
+    this.#onAppend?.(div);
     if (annotations.length === 0) {
       this.hide();
       return;
@@ -4937,13 +4933,15 @@ class TextHighlighter {
 
 class TextLayerBuilder {
   #enablePermissions = false;
+  #onAppend = null;
   #rotation = 0;
   #scale = 0;
   #textContentSource = null;
   constructor({
     highlighter = null,
     accessibilityManager = null,
-    enablePermissions = false
+    enablePermissions = false,
+    onAppend = null
   }) {
     this.textContentItemsStr = [];
     this.renderingDone = false;
@@ -4953,8 +4951,9 @@ class TextLayerBuilder {
     this.highlighter = highlighter;
     this.accessibilityManager = accessibilityManager;
     this.#enablePermissions = enablePermissions === true;
-    this.onAppend = null;
+    this.#onAppend = onAppend;
     this.div = document.createElement("div");
+    this.div.tabIndex = 0;
     this.div.className = "textLayer";
   }
   #finishRendering() {
@@ -5009,7 +5008,7 @@ class TextLayerBuilder {
     this.#finishRendering();
     this.#scale = scale;
     this.#rotation = rotation;
-    this.onAppend(this.div);
+    this.#onAppend?.(this.div);
     this.highlighter?.enable();
     this.accessibilityManager?.enable();
   }
@@ -5083,8 +5082,8 @@ class TextLayerBuilder {
 
 
 
-const MAX_CANVAS_PIXELS = compatibilityParams.maxCanvasPixels || 16777216;
 const DEFAULT_LAYER_PROPERTIES = null;
+const LAYERS_ORDER = new Map([["canvasWrapper", 0], ["textLayer", 1], ["annotationLayer", 2], ["annotationEditorLayer", 3], ["xfaLayer", 3]]);
 class PDFPageView {
   #annotationMode = AnnotationMode.ENABLE_FORMS;
   #hasRestrictedScaling = false;
@@ -5100,6 +5099,7 @@ class PDFPageView {
     regularAnnotations: true
   };
   #viewportMap = new WeakMap();
+  #layers = [null, null, null, null];
   constructor(options) {
     const container = options.container;
     const defaultViewport = options.defaultViewport;
@@ -5116,7 +5116,7 @@ class PDFPageView {
     this.#textLayerMode = options.textLayerMode ?? TextLayerMode.ENABLE;
     this.#annotationMode = options.annotationMode ?? AnnotationMode.ENABLE_FORMS;
     this.imageResourcesPath = options.imageResourcesPath || "";
-    this.maxCanvasPixels = options.maxCanvasPixels ?? MAX_CANVAS_PIXELS;
+    this.maxCanvasPixels = options.maxCanvasPixels ?? (AppOptions.getCompat("maxCanvasPixels") || 2 ** 25);
     this.pageColors = options.pageColors || null;
     this.eventBus = options.eventBus;
     this.renderingQueue = options.renderingQueue;
@@ -5143,6 +5143,23 @@ class PDFPageView {
     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);
+  }
   get renderingState() {
     return this.#renderingState;
   }
@@ -5256,7 +5273,7 @@ class PDFPageView {
     } finally {
       if (this.xfaLayer?.div) {
         this.l10n.pause();
-        this.div.append(this.xfaLayer.div);
+        this.#addLayer(this.xfaLayer.div, "xfaLayer");
         this.l10n.resume();
       }
       this.eventBus.dispatch("xfalayerrendered", {
@@ -5368,6 +5385,10 @@ class PDFPageView {
           continue;
       }
       node.remove();
+      const layerIndex = this.#layers.indexOf(node);
+      if (layerIndex >= 0) {
+        this.#layers[layerIndex] = null;
+      }
     }
     div.removeAttribute("data-loaded");
     if (annotationLayerNode) {
@@ -5627,19 +5648,20 @@ class PDFPageView {
     this.renderingState = RenderingStates.RUNNING;
     const canvasWrapper = document.createElement("div");
     canvasWrapper.classList.add("canvasWrapper");
-    div.append(canvasWrapper);
+    canvasWrapper.setAttribute("aria-hidden", true);
+    this.#addLayer(canvasWrapper, "canvasWrapper");
     if (!this.textLayer && this.#textLayerMode !== TextLayerMode.DISABLE && !pdfPage.isPureXfa) {
       this._accessibilityManager ||= new TextAccessibilityManager();
       this.textLayer = new TextLayerBuilder({
         highlighter: this._textHighlighter,
         accessibilityManager: this._accessibilityManager,
-        enablePermissions: this.#textLayerMode === TextLayerMode.ENABLE_PERMISSIONS
+        enablePermissions: this.#textLayerMode === TextLayerMode.ENABLE_PERMISSIONS,
+        onAppend: textLayerDiv => {
+          this.l10n.pause();
+          this.#addLayer(textLayerDiv, "textLayer");
+          this.l10n.resume();
+        }
       });
-      this.textLayer.onAppend = textLayerDiv => {
-        this.l10n.pause();
-        this.div.append(textLayerDiv);
-        this.l10n.resume();
-      };
     }
     if (!this.annotationLayer && this.#annotationMode !== AnnotationMode.DISABLE) {
       const {
@@ -5652,7 +5674,6 @@ class PDFPageView {
       } = this.#layerProperties;
       this._annotationCanvasMap ||= new Map();
       this.annotationLayer = new AnnotationLayerBuilder({
-        pageDiv: div,
         pdfPage,
         annotationStorage,
         imageResourcesPath: this.imageResourcesPath,
@@ -5663,7 +5684,10 @@ class PDFPageView {
         hasJSActionsPromise,
         fieldObjectsPromise,
         annotationCanvasMap: this._annotationCanvasMap,
-        accessibilityManager: this._accessibilityManager
+        accessibilityManager: this._accessibilityManager,
+        onAppend: annotationLayerDiv => {
+          this.#addLayer(annotationLayerDiv, "annotationLayer");
+        }
       });
     }
     const renderContinueCallback = cont => {
@@ -5752,13 +5776,15 @@ class PDFPageView {
       if (!this.annotationEditorLayer) {
         this.annotationEditorLayer = new AnnotationEditorLayerBuilder({
           uiManager: annotationEditorUIManager,
-          pageDiv: div,
           pdfPage,
           l10n,
           accessibilityManager: this._accessibilityManager,
           annotationLayer: this.annotationLayer?.annotationLayer,
           textLayer: this.textLayer,
-          drawLayer: this.drawLayer.getDrawLayer()
+          drawLayer: this.drawLayer.getDrawLayer(),
+          onAppend: annotationEditorLayerDiv => {
+            this.#addLayer(annotationEditorLayerDiv, "annotationEditorLayer");
+          }
         });
       }
       this.#renderAnnotationEditorLayer();
@@ -5883,6 +5909,7 @@ class PDFViewer {
   #annotationMode = AnnotationMode.ENABLE_FORMS;
   #containerTopLeft = null;
   #copyCallbackBound = null;
+  #enableHighlightFloatingButton = false;
   #enablePermissions = false;
   #mlManager = null;
   #getAllTextInProgress = false;
@@ -5895,7 +5922,7 @@ class PDFViewer {
   #scaleTimeoutId = null;
   #textLayerMode = TextLayerMode.ENABLE;
   constructor(options) {
-    const viewerVersion = "4.1.249";
+    const viewerVersion = "4.1.342";
     if (version !== viewerVersion) {
       throw new Error(`The API version "${version}" does not match the Viewer version "${viewerVersion}".`);
     }
@@ -5915,6 +5942,7 @@ class PDFViewer {
     this.#annotationMode = options.annotationMode ?? AnnotationMode.ENABLE_FORMS;
     this.#annotationEditorMode = options.annotationEditorMode ?? AnnotationEditorType.NONE;
     this.#annotationEditorHighlightColors = options.annotationEditorHighlightColors || null;
+    this.#enableHighlightFloatingButton = options.enableHighlightFloatingButton === true;
     this.imageResourcesPath = options.imageResourcesPath || "";
     this.enablePrintAutoRotate = options.enablePrintAutoRotate || false;
     this.maxCanvasPixels = options.maxCanvasPixels;
@@ -6225,7 +6253,9 @@ class PDFViewer {
     }
     const pagesCount = pdfDocument.numPages;
     const firstPagePromise = pdfDocument.getPage(1);
-    const optionalContentConfigPromise = pdfDocument.getOptionalContentConfig();
+    const optionalContentConfigPromise = pdfDocument.getOptionalContentConfig({
+      intent: "display"
+    });
     const permissionsPromise = this.#enablePermissions ? pdfDocument.getPermissions() : Promise.resolve();
     if (pagesCount > PagesCountLimit.FORCE_SCROLL_MODE_PAGE) {
       console.warn("Forcing PAGE-scrolling for performance reasons, given the length of the document.");
@@ -6281,7 +6311,7 @@ class PDFViewer {
         if (pdfDocument.isPureXfa) {
           console.warn("Warning: XFA-editing is not implemented.");
         } else if (isValidAnnotationEditorMode(mode)) {
-          this.#annotationEditorUIManager = new AnnotationEditorUIManager(this.container, this.viewer, this.#altTextManager, this.eventBus, pdfDocument, this.pageColors, this.#annotationEditorHighlightColors, this.#mlManager);
+          this.#annotationEditorUIManager = new AnnotationEditorUIManager(this.container, this.viewer, this.#altTextManager, this.eventBus, pdfDocument, this.pageColors, this.#annotationEditorHighlightColors, this.#enableHighlightFloatingButton, this.#mlManager);
           this.eventBus.dispatch("annotationeditoruimanager", {
             source: this,
             uiManager: this.#annotationEditorUIManager
@@ -6942,7 +6972,9 @@ class PDFViewer {
     }
     if (!this._optionalContentConfigPromise) {
       console.error("optionalContentConfigPromise: Not initialized yet.");
-      return this.pdfDocument.getOptionalContentConfig();
+      return this.pdfDocument.getOptionalContentConfig({
+        intent: "display"
+      });
     }
     return this._optionalContentConfigPromise;
   }
@@ -7281,10 +7313,6 @@ class Toolbar {
       element: options.download,
       eventName: "download",
       nimbusName: "download-button"
-    }, {
-      element: options.openInApp,
-      eventName: "openinexternalapp",
-      nimbusName: "open-in-app-button"
     }];
     if (nimbusData) {
       this.#buttons = [];
@@ -7645,6 +7673,7 @@ const PDFViewerApplication = {
       annotationMode: AppOptions.get("annotationMode"),
       annotationEditorMode,
       annotationEditorHighlightColors: AppOptions.get("highlightEditorColors"),
+      enableHighlightFloatingButton: AppOptions.get("enableHighlightFloatingButton"),
       imageResourcesPath: AppOptions.get("imageResourcesPath"),
       enablePrintAutoRotate: AppOptions.get("enablePrintAutoRotate"),
       maxCanvasPixels: AppOptions.get("maxCanvasPixels"),
@@ -7784,40 +7813,8 @@ const PDFViewerApplication = {
     if (this.supportsIntegratedFind) {
       appConfig.toolbar?.viewFind?.classList.add("hidden");
     }
-    this.initPassiveLoading(file);
-    const {
-      mainContainer
-    } = appConfig;
-    ({
-      scrollTop: this._lastScrollTop,
-      scrollLeft: this._lastScrollLeft
-    } = mainContainer);
-    const scroll = () => {
-      if (this._lastScrollTop === mainContainer.scrollTop && this._lastScrollLeft === mainContainer.scrollLeft) {
-        return;
-      }
-      mainContainer.removeEventListener("scroll", scroll, {
-        passive: true
-      });
-      this._isScrolling = true;
-      const scrollend = () => {
-        ({
-          scrollTop: this._lastScrollTop,
-          scrollLeft: this._lastScrollLeft
-        } = mainContainer);
-        this._isScrolling = false;
-        mainContainer.addEventListener("scroll", scroll, {
-          passive: true
-        });
-        mainContainer.removeEventListener("scrollend", scrollend);
-        mainContainer.removeEventListener("blur", scrollend);
-      };
-      mainContainer.addEventListener("scrollend", scrollend);
-      mainContainer.addEventListener("blur", scrollend);
-    };
-    mainContainer.addEventListener("scroll", scroll, {
-      passive: true
-    });
+    this.setTitleUsingUrl(file, file);
+    this.externalServices.initPassiveLoading();
   },
   get externalServices() {
     return shadow(this, "externalServices", new ExternalServices());
@@ -7890,45 +7887,12 @@ const PDFViewerApplication = {
     return shadow(this, "supportsMouseWheelZoomMetaKey", AppOptions.get("supportsMouseWheelZoomMetaKey"));
   },
   get supportsCaretBrowsingMode() {
-    return shadow(this, "supportsCaretBrowsingMode", AppOptions.get("supportsCaretBrowsingMode"));
+    return AppOptions.get("supportsCaretBrowsingMode");
   },
   moveCaret(isUp, select) {
     this._caretBrowsing ||= new CaretBrowsingMode(this.appConfig.mainContainer, this.appConfig.viewerContainer, this.appConfig.toolbar?.container);
     this._caretBrowsing.moveCaret(isUp, select);
   },
-  initPassiveLoading(file) {
-    this.setTitleUsingUrl(file, file);
-    this.externalServices.initPassiveLoading({
-      onOpenWithTransport: range => {
-        this.open({
-          range
-        });
-      },
-      onOpenWithData: (data, contentDispositionFilename) => {
-        if (isPdfFile(contentDispositionFilename)) {
-          this._contentDispositionFilename = contentDispositionFilename;
-        }
-        this.open({
-          data
-        });
-      },
-      onOpenWithURL: (url, length, originalUrl) => {
-        this.open({
-          url,
-          length,
-          originalUrl
-        });
-      },
-      onError: err => {
-        this.l10n.get("pdfjs-loading-error").then(msg => {
-          this._documentError(msg, err);
-        });
-      },
-      onProgress: (loaded, total) => {
-        this.progress(loaded / total);
-      }
-    });
-  },
   setTitleUsingUrl(url = "", downloadUrl = null) {
     this.url = url;
     this.baseUrl = url.split("#", 1)[0];
@@ -8016,6 +7980,9 @@ const PDFViewerApplication = {
     }
     const workerParams = AppOptions.getAll(OptionKind.WORKER);
     Object.assign(GlobalWorkerOptions, workerParams);
+    if (args.data && isPdfFile(args.filename)) {
+      this._contentDispositionFilename = args.filename;
+    }
     AppOptions.set("docBaseUrl", this.baseUrl);
     const apiParams = AppOptions.getAll(OptionKind.API);
     const loadingTask = getDocument({
@@ -8051,10 +8018,9 @@ const PDFViewerApplication = {
       } else if (reason instanceof UnexpectedResponseException) {
         key = "pdfjs-unexpected-response-error";
       }
-      return this.l10n.get(key).then(msg => {
-        this._documentError(msg, {
-          message: reason?.message
-        });
+      return this._documentError(key, {
+        message: reason.message
+      }).then(() => {
         throw reason;
       });
     });
@@ -8118,21 +8084,17 @@ const PDFViewerApplication = {
       this.download(options);
     }
   },
-  openInExternalApp() {
-    this.downloadOrSave({
-      openInExternalApp: true
-    });
-  },
-  _documentError(message, moreInfo = null) {
+  async _documentError(key, moreInfo = null) {
     this._unblockDocumentLoadEvent();
-    this._otherError(message, moreInfo);
+    const message = await this._otherError(key || "pdfjs-loading-error", moreInfo);
     this.eventBus.dispatch("documenterror", {
       source: this,
       message,
       reason: moreInfo?.message ?? null
     });
   },
-  _otherError(message, moreInfo = 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: ${moreInfo.message}`);
@@ -8148,6 +8110,7 @@ const PDFViewerApplication = {
       }
     }
     console.error(`${message}\n\n${moreInfoText.join("\n")}`);
+    return message;
   },
   progress(level) {
     if (!this.loadingBar || this.downloadComplete) {
@@ -8272,10 +8235,8 @@ const PDFViewerApplication = {
       this._unblockDocumentLoadEvent();
       this._initializeAutoPrint(pdfDocument, openActionPromise);
     }, reason => {
-      this.l10n.get("pdfjs-loading-error").then(msg => {
-        this._documentError(msg, {
-          message: reason?.message
-        });
+      this._documentError("pdfjs-loading-error", {
+        message: reason.message
       });
     });
     onePageRendered.then(data => {
@@ -8521,9 +8482,7 @@ const PDFViewerApplication = {
       return;
     }
     if (!this.supportsPrinting) {
-      this.l10n.get("pdfjs-printing-not-supported").then(msg => {
-        this._otherError(msg);
-      });
+      this._otherError("pdfjs-printing-not-supported");
       return;
     }
     if (!this.pdfViewer.pageViewsReady) {
@@ -8537,7 +8496,6 @@ const PDFViewerApplication = {
       pagesOverview: this.pdfViewer.getPagesOverview(),
       printContainer: this.appConfig.printContainer,
       printResolution: AppOptions.get("printResolution"),
-      optionalContentConfigPromise: this.pdfViewer.optionalContentConfigPromise,
       printAnnotationStoragePromise: this._printAnnotationStoragePromise
     });
     this.forceRendering();
@@ -8606,7 +8564,6 @@ const PDFViewerApplication = {
     eventBus._on("switchannotationeditorparams", webViewerSwitchAnnotationEditorParams);
     eventBus._on("print", webViewerPrint);
     eventBus._on("download", webViewerDownload);
-    eventBus._on("openinexternalapp", webViewerOpenInExternalApp);
     eventBus._on("firstpage", webViewerFirstPage);
     eventBus._on("lastpage", webViewerLastPage);
     eventBus._on("nextpage", webViewerNextPage);
@@ -8638,7 +8595,10 @@ const PDFViewerApplication = {
   bindWindowEvents() {
     const {
       eventBus,
-      _boundEvents
+      _boundEvents,
+      appConfig: {
+        mainContainer
+      }
     } = this;
     function addWindowResolutionChange(evt = null) {
       if (evt) {
@@ -8698,12 +8658,79 @@ const PDFViewerApplication = {
     window.addEventListener("beforeprint", _boundEvents.windowBeforePrint);
     window.addEventListener("afterprint", _boundEvents.windowAfterPrint);
     window.addEventListener("updatefromsandbox", _boundEvents.windowUpdateFromSandbox);
+    ({
+      scrollTop: this._lastScrollTop,
+      scrollLeft: this._lastScrollLeft
+    } = mainContainer);
+    const scrollend = _boundEvents.mainContainerScrollend = () => {
+      ({
+        scrollTop: this._lastScrollTop,
+        scrollLeft: this._lastScrollLeft
+      } = mainContainer);
+      this._isScrolling = false;
+      mainContainer.addEventListener("scroll", scroll, {
+        passive: true
+      });
+      mainContainer.removeEventListener("scrollend", scrollend);
+      mainContainer.removeEventListener("blur", scrollend);
+    };
+    const scroll = _boundEvents.mainContainerScroll = () => {
+      if (this._isCtrlKeyDown || this._lastScrollTop === mainContainer.scrollTop && this._lastScrollLeft === mainContainer.scrollLeft) {
+        return;
+      }
+      mainContainer.removeEventListener("scroll", scroll, {
+        passive: true
+      });
+      this._isScrolling = true;
+      mainContainer.addEventListener("scrollend", scrollend);
+      mainContainer.addEventListener("blur", scrollend);
+    };
+    mainContainer.addEventListener("scroll", scroll, {
+      passive: true
+    });
   },
   unbindEvents() {
     throw new Error("Not implemented: unbindEvents");
   },
   unbindWindowEvents() {
-    throw new Error("Not implemented: unbindWindowEvents");
+    const {
+      _boundEvents,
+      appConfig: {
+        mainContainer
+      }
+    } = this;
+    window.removeEventListener("visibilitychange", webViewerVisibilityChange);
+    window.removeEventListener("wheel", webViewerWheel, {
+      passive: false
+    });
+    window.removeEventListener("touchstart", webViewerTouchStart, {
+      passive: false
+    });
+    window.removeEventListener("touchmove", webViewerTouchMove, {
+      passive: false
+    });
+    window.removeEventListener("touchend", webViewerTouchEnd, {
+      passive: false
+    });
+    window.removeEventListener("click", webViewerClick);
+    window.removeEventListener("keydown", webViewerKeyDown);
+    window.removeEventListener("keyup", webViewerKeyUp);
+    window.removeEventListener("resize", _boundEvents.windowResize);
+    window.removeEventListener("hashchange", _boundEvents.windowHashChange);
+    window.removeEventListener("beforeprint", _boundEvents.windowBeforePrint);
+    window.removeEventListener("afterprint", _boundEvents.windowAfterPrint);
+    window.removeEventListener("updatefromsandbox", _boundEvents.windowUpdateFromSandbox);
+    mainContainer.removeEventListener("scroll", _boundEvents.mainContainerScroll);
+    mainContainer.removeEventListener("scrollend", _boundEvents.mainContainerScrollend);
+    mainContainer.removeEventListener("blur", _boundEvents.mainContainerScrollend);
+    _boundEvents.removeWindowResolutionChange?.();
+    _boundEvents.windowResize = null;
+    _boundEvents.windowHashChange = null;
+    _boundEvents.windowBeforePrint = null;
+    _boundEvents.windowAfterPrint = null;
+    _boundEvents.windowUpdateFromSandbox = null;
+    _boundEvents.mainContainerScroll = null;
+    _boundEvents.mainContainerScrollend = null;
   },
   _accumulateTicks(ticks, prop) {
     if (this[prop] > 0 && ticks < 0 || this[prop] < 0 && ticks > 0) {
@@ -8786,9 +8813,7 @@ function webViewerPageRendered({
     }
   }
   if (error) {
-    PDFViewerApplication.l10n.get("pdfjs-rendering-error").then(msg => {
-      PDFViewerApplication._otherError(msg, error);
-    });
+    PDFViewerApplication._otherError("pdfjs-rendering-error", error);
   }
 }
 function webViewerPageMode({
@@ -8918,9 +8943,6 @@ function webViewerPrint() {
 function webViewerDownload() {
   PDFViewerApplication.downloadOrSave();
 }
-function webViewerOpenInExternalApp() {
-  PDFViewerApplication.openInExternalApp();
-}
 function webViewerFirstPage() {
   PDFViewerApplication.page = 1;
 }
@@ -9509,8 +9531,8 @@ function webViewerReportTelemetry({
 
 
 
-const pdfjsVersion = "4.1.249";
-const pdfjsBuild = "d07f37f44";
+const pdfjsVersion = "4.1.342";
+const pdfjsBuild = "e384df6f1";
 const AppConstants = null;
 window.PDFViewerApplication = PDFViewerApplication;
 window.PDFViewerApplicationConstants = AppConstants;
@@ -9524,8 +9546,7 @@ function getViewerConfiguration() {
     toolbar: {
       mainContainer,
       container: document.getElementById("floatingToolbar"),
-      download: document.getElementById("download"),
-      openInApp: document.getElementById("openInApp")
+      download: document.getElementById("download")
     },
     passwordOverlay: {
       dialog: document.getElementById("passwordDialog"),
diff --git a/toolkit/components/pdfjs/content/web/viewer.css b/toolkit/components/pdfjs/content/web/viewer.css
index 238df7ce7f..2999c89f3a 100644
--- a/toolkit/components/pdfjs/content/web/viewer.css
+++ b/toolkit/components/pdfjs/content/web/viewer.css
@@ -23,7 +23,6 @@
   text-size-adjust:none;
   forced-color-adjust:none;
   transform-origin:0 0;
-  z-index:2;
   caret-color:CanvasText;
 
   &.highlighting{
@@ -162,7 +161,6 @@
   left:0;
   pointer-events:none;
   transform-origin:0 0;
-  z-index:3;
 
   &[data-main-rotation="90"] .norotate{
     transform:rotate(270deg) translateX(-100%);
@@ -853,6 +851,208 @@
   }
 }
 
+.toggle-button{
+  --button-background-color:#f0f0f4;
+  --button-background-color-hover:#e0e0e6;
+  --button-background-color-active:#cfcfd8;
+  --color-accent-primary:#0060df;
+  --color-accent-primary-hover:#0250bb;
+  --color-accent-primary-active:#054096;
+  --border-interactive-color:#8f8f9d;
+  --border-radius-circle:9999px;
+  --border-width:1px;
+  --size-item-small:16px;
+  --size-item-large:32px;
+  --color-canvas:white;
+
+  @media (prefers-color-scheme: dark){
+    --button-background-color:color-mix(in srgb, currentColor 7%, transparent);
+    --button-background-color-hover:color-mix(
+      in srgb,
+      currentColor 14%,
+      transparent
+    );
+    --button-background-color-active:color-mix(
+      in srgb,
+      currentColor 21%,
+      transparent
+    );
+    --color-accent-primary:#0df;
+    --color-accent-primary-hover:#80ebff;
+    --color-accent-primary-active:#aaf2ff;
+    --border-interactive-color:#bfbfc9;
+    --color-canvas:#1c1b22;
+  }
+
+  @media (forced-colors: active){
+    --color-accent-primary:ButtonText;
+    --color-accent-primary-hover:SelectedItem;
+    --color-accent-primary-active:SelectedItem;
+    --border-interactive-color:ButtonText;
+    --button-background-color:ButtonFace;
+    --border-interactive-color-hover:SelectedItem;
+    --border-interactive-color-active:SelectedItem;
+    --border-interactive-color-disabled:GrayText;
+    --color-canvas:ButtonText;
+  }
+
+  --toggle-background-color:var(--button-background-color);
+  --toggle-background-color-hover:var(--button-background-color-hover);
+  --toggle-background-color-active:var(--button-background-color-active);
+  --toggle-background-color-pressed:var(--color-accent-primary);
+  --toggle-background-color-pressed-hover:var(--color-accent-primary-hover);
+  --toggle-background-color-pressed-active:var(--color-accent-primary-active);
+  --toggle-border-color:var(--border-interactive-color);
+  --toggle-border-color-hover:var(--toggle-border-color);
+  --toggle-border-color-active:var(--toggle-border-color);
+  --toggle-border-radius:var(--border-radius-circle);
+  --toggle-border-width:var(--border-width);
+  --toggle-height:var(--size-item-small);
+  --toggle-width:var(--size-item-large);
+  --toggle-dot-background-color:var(--toggle-border-color);
+  --toggle-dot-background-color-hover:var(--toggle-dot-background-color);
+  --toggle-dot-background-color-active:var(--toggle-dot-background-color);
+  --toggle-dot-background-color-on-pressed:var(--color-canvas);
+  --toggle-dot-margin:1px;
+  --toggle-dot-height:calc(
+    var(--toggle-height) - 2 * var(--toggle-dot-margin) - 2 *
+      var(--toggle-border-width)
+  );
+  --toggle-dot-width:var(--toggle-dot-height);
+  --toggle-dot-transform-x:calc(
+    var(--toggle-width) - 4 * var(--toggle-dot-margin) - var(--toggle-dot-width)
+  );
+
+  appearance:none;
+  padding:0;
+  margin:0;
+  border:var(--toggle-border-width) solid var(--toggle-border-color);
+  height:var(--toggle-height);
+  width:var(--toggle-width);
+  border-radius:var(--toggle-border-radius);
+  background:var(--toggle-background-color);
+  box-sizing:border-box;
+  flex-shrink:0;
+
+  &:focus-visible{
+    outline:var(--focus-outline);
+    outline-offset:var(--focus-outline-offset);
+  }
+
+  &:enabled:hover{
+    background:var(--toggle-background-color-hover);
+    border-color:var(--toggle-border-color);
+  }
+
+  &:enabled:active{
+    background:var(--toggle-background-color-active);
+    border-color:var(--toggle-border-color);
+  }
+
+  &[aria-pressed="true"]{
+    background:var(--toggle-background-color-pressed);
+    border-color:transparent;
+  }
+
+  &[aria-pressed="true"]:enabled:hover{
+    background:var(--toggle-background-color-pressed-hover);
+    border-color:transparent;
+  }
+
+  &[aria-pressed="true"]:enabled:active{
+    background:var(--toggle-background-color-pressed-active);
+    border-color:transparent;
+  }
+
+  &::before{
+    display:block;
+    content:"";
+    background-color:var(--toggle-dot-background-color);
+    height:var(--toggle-dot-height);
+    width:var(--toggle-dot-width);
+    margin:var(--toggle-dot-margin);
+    border-radius:var(--toggle-border-radius);
+    translate:0;
+  }
+
+  &[aria-pressed="true"]::before{
+    translate:var(--toggle-dot-transform-x);
+    background-color:var(--toggle-dot-background-color-on-pressed);
+  }
+
+  &[aria-pressed="true"]:enabled:hover::before,
+  &[aria-pressed="true"]:enabled:active::before{
+    background-color:var(--toggle-dot-background-color-on-pressed);
+  }
+
+  &[aria-pressed="true"]:-moz-locale-dir(rtl)::before,
+  &[aria-pressed="true"]:dir(rtl)::before{
+    translate:calc(-1 * var(--toggle-dot-transform-x));
+  }
+
+  @media (prefers-reduced-motion: no-preference){
+    &::before{
+      transition:translate 100ms;
+    }
+  }
+
+  @media (prefers-contrast){
+    &:enabled:hover{
+      border-color:var(--toggle-border-color-hover);
+    }
+
+    &:enabled:active{
+      border-color:var(--toggle-border-color-active);
+    }
+
+    &[aria-pressed="true"]:enabled{
+      border-color:var(--toggle-border-color);
+      position:relative;
+    }
+
+    &[aria-pressed="true"]:enabled:hover,
+    &[aria-pressed="true"]:enabled:hover:active{
+      border-color:var(--toggle-border-color-hover);
+    }
+
+    &[aria-pressed="true"]:enabled:active{
+      background-color:var(--toggle-dot-background-color-active);
+      border-color:var(--toggle-dot-background-color-hover);
+    }
+
+    &:hover::before,
+    &:active::before{
+      background-color:var(--toggle-dot-background-color-hover);
+    }
+  }
+
+  @media (forced-colors){
+    --toggle-dot-background-color:var(--color-accent-primary);
+    --toggle-dot-background-color-hover:var(--color-accent-primary-hover);
+    --toggle-dot-background-color-active:var(--color-accent-primary-active);
+    --toggle-dot-background-color-on-pressed:var(--button-background-color);
+    --toggle-background-color-disabled:var(--button-background-color-disabled);
+    --toggle-border-color-hover:var(--border-interactive-color-hover);
+    --toggle-border-color-active:var(--border-interactive-color-active);
+    --toggle-border-color-disabled:var(--border-interactive-color-disabled);
+
+    &[aria-pressed="true"]:enabled::after{
+      border:1px solid var(--button-background-color);
+      content:"";
+      position:absolute;
+      height:var(--toggle-height);
+      width:var(--toggle-width);
+      display:block;
+      border-radius:var(--toggle-border-radius);
+      inset:-2px;
+    }
+
+    &[aria-pressed="true"]:enabled:active::after{
+      border-color:var(--toggle-border-color-active);
+    }
+  }
+}
+
 :root{
   --outline-width:2px;
   --outline-color:#0060df;
@@ -878,6 +1078,19 @@
   --editorHighlight-editing-cursor:url(images/cursor-editorTextHighlight.svg) 24 24, text;
   --editorFreeHighlight-editing-cursor:url(images/cursor-editorFreeHighlight.svg) 1 18, pointer;
 }
+.visuallyHidden{
+  position:absolute;
+  top:0;
+  left:0;
+  border:0;
+  margin:0;
+  padding:0;
+  width:0;
+  height:0;
+  overflow:hidden;
+  white-space:nowrap;
+  font-size:0;
+}
 
 .textLayer.highlighting{
   cursor:var(--editorFreeHighlight-editing-cursor);
@@ -926,7 +1139,6 @@
   font-size:calc(100px * var(--scale-factor));
   transform-origin:0 0;
   cursor:auto;
-  z-index:4;
 }
 
 .annotationEditorLayer.waiting{
@@ -995,10 +1207,12 @@
 }
 
 .annotationEditorLayer
-  :is(.freeTextEditor, .inkEditor, .stampEditor, .highlightEditor){
+  :is(.freeTextEditor, .inkEditor, .stampEditor, .highlightEditor),
+.textLayer{
   .editToolbar{
     --editor-toolbar-delete-image:url(images/editor-toolbar-delete.svg);
     --editor-toolbar-bg-color:#f0f0f4;
+    --editor-toolbar-highlight-image:url(images/toolbarButton-editorHighlight.svg);
     --editor-toolbar-fg-color:#2e2e56;
     --editor-toolbar-border-color:#8f8f9d;
     --editor-toolbar-hover-border-color:var(--editor-toolbar-border-color);
@@ -1084,6 +1298,25 @@
         margin-inline:2px;
       }
 
+      .highlightButton{
+        width:var(--editor-toolbar-height);
+
+        &::before{
+          content:"";
+          mask-image:var(--editor-toolbar-highlight-image);
+          mask-repeat:no-repeat;
+          mask-position:center;
+          display:inline-block;
+          background-color:var(--editor-toolbar-fg-color);
+          width:100%;
+          height:100%;
+        }
+
+        &:hover::before{
+          background-color:var(--editor-toolbar-hover-fg-color);
+        }
+      }
+
       .delete{
         width:var(--editor-toolbar-height);
 
@@ -2003,7 +2236,12 @@
         --example-color:CanvasText;
       }
 
-      &::before{
+      :is(& > .editorParamsSlider[disabled]){
+        opacity:0.4;
+      }
+
+      &::before,
+      &::after{
         content:"";
         width:8px;
         aspect-ratio:1;
@@ -2011,20 +2249,46 @@
         border-radius:100%;
         background-color:var(--example-color);
       }
+      &::after{
+        width:24px;
+      }
 
       .editorParamsSlider{
         width:unset;
         height:14px;
       }
+    }
+  }
 
-      &::after{
-        content:"";
-        width:24px;
-        aspect-ratio:1;
-        display:block;
-        border-radius:100%;
-        background-color:var(--example-color);
+  #editorHighlightVisibility{
+    display:flex;
+    flex-direction:column;
+    align-items:flex-start;
+    gap:8px;
+    align-self:stretch;
+
+    .divider{
+      --divider-color:#d7d7db;
+
+      @media (prefers-color-scheme: dark){
+        --divider-color:#8f8f9d;
+      }
+
+      @media screen and (forced-colors: active){
+        --divider-color:CanvasText;
       }
+
+      margin-block:4px;
+      width:100%;
+      height:1px;
+      background-color:var(--divider-color);
+    }
+
+    .toggler{
+      display:flex;
+      justify-content:space-between;
+      align-items:center;
+      align-self:stretch;
     }
   }
 }
@@ -2084,7 +2348,6 @@
   overflow:hidden;
   width:100%;
   height:100%;
-  z-index:1;
 }
 
 .pdfViewer .page{
@@ -2655,6 +2918,7 @@ body{
     font-style:normal;
   }
   .loadingInput:has(> &[data-status="pending"])::after{
+    display:block;
     visibility:visible;
   }
   &[data-status="notFound"]{
@@ -3249,6 +3513,7 @@ a:is(.toolbarButton, .secondaryToolbarButton)[href="#"]{
   transition-property:none;
 
   .loadingInput:has(> &.loading)::after{
+    display: block;
     visibility:visible;
 
     transition-property:visibility;
@@ -3260,6 +3525,7 @@ a:is(.toolbarButton, .secondaryToolbarButton)[href="#"]{
   &::after{
     position:absolute;
     visibility:hidden;
+    display: none;
     top:calc(50% - 8px);
     width:16px;
     height:16px;
diff --git a/toolkit/components/pdfjs/content/web/viewer.html b/toolkit/components/pdfjs/content/web/viewer.html
index 59438b64b4..941e17b58d 100644
--- a/toolkit/components/pdfjs/content/web/viewer.html
+++ b/toolkit/components/pdfjs/content/web/viewer.html
@@ -127,6 +127,13 @@ See https://github.com/adobe-type-tools/cmap-resources
                 <input type="range" id="editorFreeHighlightThickness" class="editorParamsSlider" data-l10n-id="pdfjs-editor-free-highlight-thickness-title" value="12" min="8" max="24" step="1" tabindex="101">
               </div>
             </div>
+            <div id="editorHighlightVisibility">
+              <div class="divider"></div>
+              <div class="toggler">
+                <label for="editorHighlightShowAll" class="editorParamsLabel" data-l10n-id="pdfjs-editor-highlight-show-all-button-label">Show all</label>
+                <button id="editorHighlightShowAll" class="toggle-button" data-l10n-id="pdfjs-editor-highlight-show-all-button" aria-pressed="true" tabindex="102"></button>
+              </div>
+            </div>
           </div>
         </div>
 
@@ -134,11 +141,11 @@ See https://github.com/adobe-type-tools/cmap-resources
           <div class="editorParamsToolbarContainer">
             <div class="editorParamsSetter">
               <label for="editorFreeTextColor" class="editorParamsLabel" data-l10n-id="pdfjs-editor-free-text-color-input">Color</label>
-              <input type="color" id="editorFreeTextColor" class="editorParamsColor" tabindex="102">
+              <input type="color" id="editorFreeTextColor" class="editorParamsColor" tabindex="103">
             </div>
             <div class="editorParamsSetter">
               <label for="editorFreeTextFontSize" class="editorParamsLabel" data-l10n-id="pdfjs-editor-free-text-size-input">Size</label>
-              <input type="range" id="editorFreeTextFontSize" class="editorParamsSlider" value="10" min="5" max="100" step="1" tabindex="103">
+              <input type="range" id="editorFreeTextFontSize" class="editorParamsSlider" value="10" min="5" max="100" step="1" tabindex="104">
             </div>
           </div>
         </div>
@@ -147,22 +154,22 @@ See https://github.com/adobe-type-tools/cmap-resources
           <div class="editorParamsToolbarContainer">
             <div class="editorParamsSetter">
               <label for="editorInkColor" class="editorParamsLabel" data-l10n-id="pdfjs-editor-ink-color-input">Color</label>
-              <input type="color" id="editorInkColor" class="editorParamsColor" tabindex="104">
+              <input type="color" id="editorInkColor" class="editorParamsColor" tabindex="105">
             </div>
             <div class="editorParamsSetter">
               <label for="editorInkThickness" class="editorParamsLabel" data-l10n-id="pdfjs-editor-ink-thickness-input">Thickness</label>
-              <input type="range" id="editorInkThickness" class="editorParamsSlider" value="1" min="1" max="20" step="1" tabindex="105">
+              <input type="range" id="editorInkThickness" class="editorParamsSlider" value="1" min="1" max="20" step="1" tabindex="106">
             </div>
             <div class="editorParamsSetter">
               <label for="editorInkOpacity" class="editorParamsLabel" data-l10n-id="pdfjs-editor-ink-opacity-input">Opacity</label>
-              <input type="range" id="editorInkOpacity" class="editorParamsSlider" value="100" min="1" max="100" step="1" tabindex="106">
+              <input type="range" id="editorInkOpacity" class="editorParamsSlider" value="100" min="1" max="100" step="1" tabindex="107">
             </div>
           </div>
         </div>
 
         <div class="editorParamsToolbar hidden doorHangerRight" id="editorStampParamsToolbar">
           <div class="editorParamsToolbarContainer">
-            <button id="editorStampAddImage" class="secondaryToolbarButton" title="Add image" tabindex="107" data-l10n-id="pdfjs-editor-stamp-add-image-button">
+            <button id="editorStampAddImage" class="secondaryToolbarButton" title="Add image" tabindex="108" data-l10n-id="pdfjs-editor-stamp-add-image-button">
               <span class="editorParamsLabel" data-l10n-id="pdfjs-editor-stamp-add-image-button-label">Add image</span>
             </button>
           </div>
diff --git a/toolkit/components/pdfjs/content/web/viewer.mjs b/toolkit/components/pdfjs/content/web/viewer.mjs
index a047a9f7c1..778ce57e1a 100644
--- a/toolkit/components/pdfjs/content/web/viewer.mjs
+++ b/toolkit/components/pdfjs/content/web/viewer.mjs
@@ -606,6 +606,10 @@ const defaultOptions = {
     value: false,
     kind: OptionKind.VIEWER + OptionKind.PREFERENCE
   },
+  enableHighlightFloatingButton: {
+    value: false,
+    kind: OptionKind.VIEWER + OptionKind.PREFERENCE
+  },
   enableML: {
     value: false,
     kind: OptionKind.VIEWER + OptionKind.PREFERENCE
@@ -651,7 +655,7 @@ const defaultOptions = {
     kind: OptionKind.VIEWER
   },
   maxCanvasPixels: {
-    value: 16777216,
+    value: 2 ** 25,
     kind: OptionKind.VIEWER
   },
   forcePageColors: {
@@ -768,28 +772,20 @@ class AppOptions {
   constructor() {
     throw new Error("Cannot initialize AppOptions.");
   }
+  static getCompat(name) {
+    return compatibilityParams[name] ?? undefined;
+  }
   static get(name) {
-    const userOption = userOptions[name];
-    if (userOption !== undefined) {
-      return userOption;
-    }
-    const defaultOption = defaultOptions[name];
-    if (defaultOption !== undefined) {
-      return compatibilityParams[name] ?? defaultOption.value;
-    }
-    return undefined;
+    return userOptions[name] ?? compatibilityParams[name] ?? defaultOptions[name]?.value ?? undefined;
   }
-  static getAll(kind = null) {
+  static getAll(kind = null, defaultOnly = false) {
     const options = Object.create(null);
     for (const name in defaultOptions) {
       const defaultOption = defaultOptions[name];
-      if (kind) {
-        if (!(kind & defaultOption.kind)) {
-          continue;
-        }
+      if (kind && !(kind & defaultOption.kind)) {
+        continue;
       }
-      const userOption = userOptions[name];
-      options[name] = userOption !== undefined ? userOption : compatibilityParams[name] ?? defaultOption.value;
+      options[name] = defaultOnly ? defaultOption.value : userOptions[name] ?? compatibilityParams[name] ?? defaultOption.value;
     }
     return options;
   }
@@ -1112,30 +1108,7 @@ class PDFLinkService {
     if (pdfDocument !== this.pdfDocument) {
       return;
     }
-    let operator;
-    for (const elem of action.state) {
-      switch (elem) {
-        case "ON":
-        case "OFF":
-        case "Toggle":
-          operator = elem;
-          continue;
-      }
-      switch (operator) {
-        case "ON":
-          optionalContentConfig.setVisibility(elem, true);
-          break;
-        case "OFF":
-          optionalContentConfig.setVisibility(elem, false);
-          break;
-        case "Toggle":
-          const group = optionalContentConfig.getGroup(elem);
-          if (group) {
-            optionalContentConfig.setVisibility(elem, !group.visible);
-          }
-          break;
-      }
-    }
+    optionalContentConfig.setOCGState(action);
     this.pdfViewer.optionalContentConfigPromise = Promise.resolve(optionalContentConfig);
   }
   cachePageRef(pageNum, pageRef) {
@@ -1423,7 +1396,7 @@ class BaseExternalServices {
   }
   updateFindControlState(data) {}
   updateFindMatchesCount(data) {}
-  initPassiveLoading(callbacks) {}
+  initPassiveLoading() {}
   reportTelemetry(data) {}
   async createL10n() {
     throw new Error("Not implemented: createL10n");
@@ -1440,6 +1413,16 @@ class BaseExternalServices {
 ;// CONCATENATED MODULE: ./web/preferences.js
 
 class BasePreferences {
+  #browserDefaults = Object.freeze({
+    canvasMaxAreaInBytes: -1,
+    isInAutomation: false,
+    supportsCaretBrowsingMode: false,
+    supportsDocumentFonts: true,
+    supportsIntegratedFind: false,
+    supportsMouseWheelZoomCtrlKey: true,
+    supportsMouseWheelZoomMetaKey: true,
+    supportsPinchToZoom: true
+  });
   #defaults = Object.freeze({
     annotationEditorMode: 0,
     annotationMode: 2,
@@ -1448,6 +1431,7 @@ class BasePreferences {
     defaultZoomValue: "",
     disablePageLabels: false,
     enableHighlightEditor: false,
+    enableHighlightFloatingButton: false,
     enableML: false,
     enablePermissions: false,
     enablePrintAutoRotate: true,
@@ -1482,26 +1466,19 @@ class BasePreferences {
       browserPrefs,
       prefs
     }) => {
-      const BROWSER_PREFS = {
-        canvasMaxAreaInBytes: -1,
-        isInAutomation: false,
-        supportsCaretBrowsingMode: false,
-        supportsDocumentFonts: true,
-        supportsIntegratedFind: false,
-        supportsMouseWheelZoomCtrlKey: true,
-        supportsMouseWheelZoomMetaKey: true,
-        supportsPinchToZoom: true
-      };
       const options = Object.create(null);
-      for (const [name, defaultVal] of Object.entries(BROWSER_PREFS)) {
+      for (const [name, val] of Object.entries(this.#browserDefaults)) {
         const prefVal = browserPrefs?.[name];
-        options[name] = typeof prefVal === typeof defaultVal ? prefVal : defaultVal;
+        options[name] = typeof prefVal === typeof val ? prefVal : val;
       }
-      for (const [name, defaultVal] of Object.entries(this.#defaults)) {
+      for (const [name, val] of Object.entries(this.#defaults)) {
         const prefVal = prefs?.[name];
-        options[name] = this.#prefs[name] = typeof prefVal === typeof defaultVal ? prefVal : defaultVal;
+        options[name] = this.#prefs[name] = typeof prefVal === typeof val ? prefVal : val;
       }
       AppOptions.setAll(options, true);
+      window.addEventListener("updatedPreference", evt => {
+        this.#updatePref(evt.detail);
+      });
     });
   }
   async _writeToStorage(prefObj) {
@@ -1510,6 +1487,24 @@ class BasePreferences {
   async _readFromStorage(prefObj) {
     throw new Error("Not implemented: _readFromStorage");
   }
+  #updatePref({
+    name,
+    value
+  }) {
+    if (name in this.#browserDefaults) {
+      if (typeof value !== typeof this.#browserDefaults[name]) {
+        return;
+      }
+    } else if (name in this.#defaults) {
+      if (typeof value !== typeof this.#defaults[name]) {
+        return;
+      }
+      this.#prefs[name] = value;
+    } else {
+      return;
+    }
+    AppOptions.set(name, value);
+  }
   async reset() {
     throw new Error("Please use `about:config` to change preferences.");
   }
@@ -1517,12 +1512,7 @@ class BasePreferences {
     throw new Error("Please use `about:config` to change preferences.");
   }
   async get(name) {
-    await this.#initializedPromise;
-    const defaultValue = this.#defaults[name];
-    if (defaultValue === undefined) {
-      throw new Error(`Get preference: "${name}" is undefined.`);
-    }
-    return this.#prefs[name] ?? defaultValue;
+    throw new Error("Not implemented: get");
   }
   get initializedPromise() {
     return this.#initializedPromise;
@@ -1824,7 +1814,7 @@ class ExternalServices extends BaseExternalServices {
   updateFindMatchesCount(data) {
     FirefoxCom.request("updateFindMatchesCount", data);
   }
-  initPassiveLoading(callbacks) {
+  initPassiveLoading() {
     let pdfDataRangeTransport;
     window.addEventListener("message", function windowMessage(e) {
       if (e.source !== null) {
@@ -1838,11 +1828,13 @@ class ExternalServices extends BaseExternalServices {
       switch (args.pdfjsLoadAction) {
         case "supportsRangedLoading":
           if (args.done && !args.data) {
-            callbacks.onError();
+            viewerApp._documentError(null);
             break;
           }
           pdfDataRangeTransport = new FirefoxComDataRangeTransport(args.length, args.data, args.done, args.filename);
-          callbacks.onOpenWithTransport(pdfDataRangeTransport);
+          viewerApp.open({
+            range: pdfDataRangeTransport
+          });
           break;
         case "range":
           pdfDataRangeTransport.onDataRange(args.begin, args.chunk);
@@ -1858,21 +1850,26 @@ class ExternalServices extends BaseExternalServices {
           pdfDataRangeTransport?.onDataProgressiveDone();
           break;
         case "progress":
-          callbacks.onProgress(args.loaded, args.total);
+          viewerApp.progress(args.loaded / args.total);
           break;
         case "complete":
           if (!args.data) {
-            callbacks.onError(args.errorCode);
+            viewerApp._documentError(null, {
+              message: args.errorCode
+            });
             break;
           }
-          callbacks.onOpenWithData(args.data, args.filename);
+          viewerApp.open({
+            data: args.data,
+            filename: args.filename
+          });
           break;
       }
     });
     FirefoxCom.request("initPassiveLoading", null);
   }
   reportTelemetry(data) {
-    FirefoxCom.request("reportTelemetry", JSON.stringify(data));
+    FirefoxCom.request("reportTelemetry", data);
   }
   updateEditorStates(data) {
     FirefoxCom.request("updateEditorStates", data);
@@ -2150,7 +2147,8 @@ class AnnotationEditorParams {
     editorInkThickness,
     editorInkOpacity,
     editorStampAddImage,
-    editorFreeHighlightThickness
+    editorFreeHighlightThickness,
+    editorHighlightShowAll
   }) {
     const dispatchEvent = (typeStr, value) => {
       this.eventBus.dispatch("switchannotationeditorparams", {
@@ -2180,6 +2178,11 @@ class AnnotationEditorParams {
     editorFreeHighlightThickness.addEventListener("input", function () {
       dispatchEvent("HIGHLIGHT_THICKNESS", this.valueAsNumber);
     });
+    editorHighlightShowAll.addEventListener("click", function () {
+      const checked = this.getAttribute("aria-pressed") === "true";
+      this.setAttribute("aria-pressed", !checked);
+      dispatchEvent("HIGHLIGHT_SHOW_ALL", !checked);
+    });
     this.eventBus._on("annotationeditorparamschanged", evt => {
       for (const [type, value] of evt.details) {
         switch (type) {
@@ -2204,6 +2207,9 @@ class AnnotationEditorParams {
           case AnnotationEditorParamsType.HIGHLIGHT_FREE:
             editorFreeHighlightThickness.disabled = !value;
             break;
+          case AnnotationEditorParamsType.HIGHLIGHT_SHOW_ALL:
+            editorHighlightShowAll.setAttribute("aria-pressed", value);
+            break;
         }
       }
     });
@@ -4690,7 +4696,9 @@ class PDFLayerViewer extends BaseTreeViewer {
       return;
     }
     const pdfDocument = this._pdfDocument;
-    const optionalContentConfig = await (promise || pdfDocument.getOptionalContentConfig());
+    const optionalContentConfig = await (promise || pdfDocument.getOptionalContentConfig({
+      intent: "display"
+    }));
     if (pdfDocument !== this._pdfDocument) {
       return;
     }
@@ -5429,14 +5437,15 @@ class FirefoxPrintService {
     pagesOverview,
     printContainer,
     printResolution,
-    optionalContentConfigPromise = null,
     printAnnotationStoragePromise = null
   }) {
     this.pdfDocument = pdfDocument;
     this.pagesOverview = pagesOverview;
     this.printContainer = printContainer;
     this._printResolution = printResolution || 150;
-    this._optionalContentConfigPromise = optionalContentConfigPromise || pdfDocument.getOptionalContentConfig();
+    this._optionalContentConfigPromise = pdfDocument.getOptionalContentConfig({
+      intent: "print"
+    });
     this._printAnnotationStoragePromise = printAnnotationStoragePromise || Promise.resolve();
   }
   layout() {
@@ -6680,7 +6689,9 @@ class PDFThumbnailViewer {
       return;
     }
     const firstPagePromise = pdfDocument.getPage(1);
-    const optionalContentConfigPromise = pdfDocument.getOptionalContentConfig();
+    const optionalContentConfigPromise = pdfDocument.getOptionalContentConfig({
+      intent: "display"
+    });
     firstPagePromise.then(firstPdfPage => {
       const pagesCount = pdfDocument.numPages;
       const viewport = firstPdfPage.getViewport({
@@ -6770,10 +6781,10 @@ class PDFThumbnailViewer {
 class AnnotationEditorLayerBuilder {
   #annotationLayer = null;
   #drawLayer = null;
+  #onAppend = null;
   #textLayer = null;
   #uiManager;
   constructor(options) {
-    this.pageDiv = options.pageDiv;
     this.pdfPage = options.pdfPage;
     this.accessibilityManager = options.accessibilityManager;
     this.l10n = options.l10n;
@@ -6784,6 +6795,7 @@ class AnnotationEditorLayerBuilder {
     this.#annotationLayer = options.annotationLayer || null;
     this.#textLayer = options.textLayer || null;
     this.#drawLayer = options.drawLayer || null;
+    this.#onAppend = options.onAppend || null;
   }
   async render(viewport, intent = "display") {
     if (intent !== "display") {
@@ -6804,10 +6816,9 @@ class AnnotationEditorLayerBuilder {
     }
     const div = this.div = document.createElement("div");
     div.className = "annotationEditorLayer";
-    div.tabIndex = 0;
     div.hidden = true;
     div.dir = this.#uiManager.direction;
-    this.pageDiv.append(div);
+    this.#onAppend?.(div);
     this.annotationEditorLayer = new AnnotationEditorLayer({
       uiManager: this.#uiManager,
       div,
@@ -6833,9 +6844,7 @@ class AnnotationEditorLayerBuilder {
     if (!this.div) {
       return;
     }
-    this.pageDiv = null;
     this.annotationEditorLayer.destroy();
-    this.div.remove();
   }
   hide() {
     if (!this.div) {
@@ -6844,7 +6853,7 @@ class AnnotationEditorLayerBuilder {
     this.div.hidden = true;
   }
   show() {
-    if (!this.div || this.annotationEditorLayer.isEmpty) {
+    if (!this.div || this.annotationEditorLayer.isInvisible) {
       return;
     }
     this.div.hidden = false;
@@ -6855,9 +6864,9 @@ class AnnotationEditorLayerBuilder {
 
 
 class AnnotationLayerBuilder {
+  #onAppend = null;
   #onPresentationModeChanged = null;
   constructor({
-    pageDiv,
     pdfPage,
     linkService,
     downloadManager,
@@ -6868,9 +6877,9 @@ class AnnotationLayerBuilder {
     hasJSActionsPromise = null,
     fieldObjectsPromise = null,
     annotationCanvasMap = null,
-    accessibilityManager = null
+    accessibilityManager = null,
+    onAppend = null
   }) {
-    this.pageDiv = pageDiv;
     this.pdfPage = pdfPage;
     this.linkService = linkService;
     this.downloadManager = downloadManager;
@@ -6882,6 +6891,7 @@ class AnnotationLayerBuilder {
     this._fieldObjectsPromise = fieldObjectsPromise || Promise.resolve(null);
     this._annotationCanvasMap = annotationCanvasMap;
     this._accessibilityManager = accessibilityManager;
+    this.#onAppend = onAppend;
     this.annotationLayer = null;
     this.div = null;
     this._cancelled = false;
@@ -6907,7 +6917,7 @@ class AnnotationLayerBuilder {
     }
     const div = this.div = document.createElement("div");
     div.className = "annotationLayer";
-    this.pageDiv.append(div);
+    this.#onAppend?.(div);
     if (annotations.length === 0) {
       this.hide();
       return;
@@ -7501,13 +7511,15 @@ class TextHighlighter {
 
 class TextLayerBuilder {
   #enablePermissions = false;
+  #onAppend = null;
   #rotation = 0;
   #scale = 0;
   #textContentSource = null;
   constructor({
     highlighter = null,
     accessibilityManager = null,
-    enablePermissions = false
+    enablePermissions = false,
+    onAppend = null
   }) {
     this.textContentItemsStr = [];
     this.renderingDone = false;
@@ -7517,8 +7529,9 @@ class TextLayerBuilder {
     this.highlighter = highlighter;
     this.accessibilityManager = accessibilityManager;
     this.#enablePermissions = enablePermissions === true;
-    this.onAppend = null;
+    this.#onAppend = onAppend;
     this.div = document.createElement("div");
+    this.div.tabIndex = 0;
     this.div.className = "textLayer";
   }
   #finishRendering() {
@@ -7573,7 +7586,7 @@ class TextLayerBuilder {
     this.#finishRendering();
     this.#scale = scale;
     this.#rotation = rotation;
-    this.onAppend(this.div);
+    this.#onAppend?.(this.div);
     this.highlighter?.enable();
     this.accessibilityManager?.enable();
   }
@@ -7647,8 +7660,8 @@ class TextLayerBuilder {
 
 
 
-const MAX_CANVAS_PIXELS = compatibilityParams.maxCanvasPixels || 16777216;
 const DEFAULT_LAYER_PROPERTIES = null;
+const LAYERS_ORDER = new Map([["canvasWrapper", 0], ["textLayer", 1], ["annotationLayer", 2], ["annotationEditorLayer", 3], ["xfaLayer", 3]]);
 class PDFPageView {
   #annotationMode = AnnotationMode.ENABLE_FORMS;
   #hasRestrictedScaling = false;
@@ -7664,6 +7677,7 @@ class PDFPageView {
     regularAnnotations: true
   };
   #viewportMap = new WeakMap();
+  #layers = [null, null, null, null];
   constructor(options) {
     const container = options.container;
     const defaultViewport = options.defaultViewport;
@@ -7680,7 +7694,7 @@ class PDFPageView {
     this.#textLayerMode = options.textLayerMode ?? TextLayerMode.ENABLE;
     this.#annotationMode = options.annotationMode ?? AnnotationMode.ENABLE_FORMS;
     this.imageResourcesPath = options.imageResourcesPath || "";
-    this.maxCanvasPixels = options.maxCanvasPixels ?? MAX_CANVAS_PIXELS;
+    this.maxCanvasPixels = options.maxCanvasPixels ?? (AppOptions.getCompat("maxCanvasPixels") || 2 ** 25);
     this.pageColors = options.pageColors || null;
     this.eventBus = options.eventBus;
     this.renderingQueue = options.renderingQueue;
@@ -7707,6 +7721,23 @@ class PDFPageView {
     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);
+  }
   get renderingState() {
     return this.#renderingState;
   }
@@ -7820,7 +7851,7 @@ class PDFPageView {
     } finally {
       if (this.xfaLayer?.div) {
         this.l10n.pause();
-        this.div.append(this.xfaLayer.div);
+        this.#addLayer(this.xfaLayer.div, "xfaLayer");
         this.l10n.resume();
       }
       this.eventBus.dispatch("xfalayerrendered", {
@@ -7932,6 +7963,10 @@ class PDFPageView {
           continue;
       }
       node.remove();
+      const layerIndex = this.#layers.indexOf(node);
+      if (layerIndex >= 0) {
+        this.#layers[layerIndex] = null;
+      }
     }
     div.removeAttribute("data-loaded");
     if (annotationLayerNode) {
@@ -8191,19 +8226,20 @@ class PDFPageView {
     this.renderingState = RenderingStates.RUNNING;
     const canvasWrapper = document.createElement("div");
     canvasWrapper.classList.add("canvasWrapper");
-    div.append(canvasWrapper);
+    canvasWrapper.setAttribute("aria-hidden", true);
+    this.#addLayer(canvasWrapper, "canvasWrapper");
     if (!this.textLayer && this.#textLayerMode !== TextLayerMode.DISABLE && !pdfPage.isPureXfa) {
       this._accessibilityManager ||= new TextAccessibilityManager();
       this.textLayer = new TextLayerBuilder({
         highlighter: this._textHighlighter,
         accessibilityManager: this._accessibilityManager,
-        enablePermissions: this.#textLayerMode === TextLayerMode.ENABLE_PERMISSIONS
+        enablePermissions: this.#textLayerMode === TextLayerMode.ENABLE_PERMISSIONS,
+        onAppend: textLayerDiv => {
+          this.l10n.pause();
+          this.#addLayer(textLayerDiv, "textLayer");
+          this.l10n.resume();
+        }
       });
-      this.textLayer.onAppend = textLayerDiv => {
-        this.l10n.pause();
-        this.div.append(textLayerDiv);
-        this.l10n.resume();
-      };
     }
     if (!this.annotationLayer && this.#annotationMode !== AnnotationMode.DISABLE) {
       const {
@@ -8216,7 +8252,6 @@ class PDFPageView {
       } = this.#layerProperties;
       this._annotationCanvasMap ||= new Map();
       this.annotationLayer = new AnnotationLayerBuilder({
-        pageDiv: div,
         pdfPage,
         annotationStorage,
         imageResourcesPath: this.imageResourcesPath,
@@ -8227,7 +8262,10 @@ class PDFPageView {
         hasJSActionsPromise,
         fieldObjectsPromise,
         annotationCanvasMap: this._annotationCanvasMap,
-        accessibilityManager: this._accessibilityManager
+        accessibilityManager: this._accessibilityManager,
+        onAppend: annotationLayerDiv => {
+          this.#addLayer(annotationLayerDiv, "annotationLayer");
+        }
       });
     }
     const renderContinueCallback = cont => {
@@ -8316,13 +8354,15 @@ class PDFPageView {
       if (!this.annotationEditorLayer) {
         this.annotationEditorLayer = new AnnotationEditorLayerBuilder({
           uiManager: annotationEditorUIManager,
-          pageDiv: div,
           pdfPage,
           l10n,
           accessibilityManager: this._accessibilityManager,
           annotationLayer: this.annotationLayer?.annotationLayer,
           textLayer: this.textLayer,
-          drawLayer: this.drawLayer.getDrawLayer()
+          drawLayer: this.drawLayer.getDrawLayer(),
+          onAppend: annotationEditorLayerDiv => {
+            this.#addLayer(annotationEditorLayerDiv, "annotationEditorLayer");
+          }
         });
       }
       this.#renderAnnotationEditorLayer();
@@ -8447,6 +8487,7 @@ class PDFViewer {
   #annotationMode = AnnotationMode.ENABLE_FORMS;
   #containerTopLeft = null;
   #copyCallbackBound = null;
+  #enableHighlightFloatingButton = false;
   #enablePermissions = false;
   #mlManager = null;
   #getAllTextInProgress = false;
@@ -8459,7 +8500,7 @@ class PDFViewer {
   #scaleTimeoutId = null;
   #textLayerMode = TextLayerMode.ENABLE;
   constructor(options) {
-    const viewerVersion = "4.1.249";
+    const viewerVersion = "4.1.342";
     if (version !== viewerVersion) {
       throw new Error(`The API version "${version}" does not match the Viewer version "${viewerVersion}".`);
     }
@@ -8479,6 +8520,7 @@ class PDFViewer {
     this.#annotationMode = options.annotationMode ?? AnnotationMode.ENABLE_FORMS;
     this.#annotationEditorMode = options.annotationEditorMode ?? AnnotationEditorType.NONE;
     this.#annotationEditorHighlightColors = options.annotationEditorHighlightColors || null;
+    this.#enableHighlightFloatingButton = options.enableHighlightFloatingButton === true;
     this.imageResourcesPath = options.imageResourcesPath || "";
     this.enablePrintAutoRotate = options.enablePrintAutoRotate || false;
     this.maxCanvasPixels = options.maxCanvasPixels;
@@ -8789,7 +8831,9 @@ class PDFViewer {
     }
     const pagesCount = pdfDocument.numPages;
     const firstPagePromise = pdfDocument.getPage(1);
-    const optionalContentConfigPromise = pdfDocument.getOptionalContentConfig();
+    const optionalContentConfigPromise = pdfDocument.getOptionalContentConfig({
+      intent: "display"
+    });
     const permissionsPromise = this.#enablePermissions ? pdfDocument.getPermissions() : Promise.resolve();
     if (pagesCount > PagesCountLimit.FORCE_SCROLL_MODE_PAGE) {
       console.warn("Forcing PAGE-scrolling for performance reasons, given the length of the document.");
@@ -8845,7 +8889,7 @@ class PDFViewer {
         if (pdfDocument.isPureXfa) {
           console.warn("Warning: XFA-editing is not implemented.");
         } else if (isValidAnnotationEditorMode(mode)) {
-          this.#annotationEditorUIManager = new AnnotationEditorUIManager(this.container, this.viewer, this.#altTextManager, this.eventBus, pdfDocument, this.pageColors, this.#annotationEditorHighlightColors, this.#mlManager);
+          this.#annotationEditorUIManager = new AnnotationEditorUIManager(this.container, this.viewer, this.#altTextManager, this.eventBus, pdfDocument, this.pageColors, this.#annotationEditorHighlightColors, this.#enableHighlightFloatingButton, this.#mlManager);
           this.eventBus.dispatch("annotationeditoruimanager", {
             source: this,
             uiManager: this.#annotationEditorUIManager
@@ -9506,7 +9550,9 @@ class PDFViewer {
     }
     if (!this._optionalContentConfigPromise) {
       console.error("optionalContentConfigPromise: Not initialized yet.");
-      return this.pdfDocument.getOptionalContentConfig();
+      return this.pdfDocument.getOptionalContentConfig({
+        intent: "display"
+      });
     }
     return this._optionalContentConfigPromise;
   }
@@ -10694,6 +10740,7 @@ const PDFViewerApplication = {
       annotationMode: AppOptions.get("annotationMode"),
       annotationEditorMode,
       annotationEditorHighlightColors: AppOptions.get("highlightEditorColors"),
+      enableHighlightFloatingButton: AppOptions.get("enableHighlightFloatingButton"),
       imageResourcesPath: AppOptions.get("imageResourcesPath"),
       enablePrintAutoRotate: AppOptions.get("enablePrintAutoRotate"),
       maxCanvasPixels: AppOptions.get("maxCanvasPixels"),
@@ -10833,40 +10880,8 @@ const PDFViewerApplication = {
     if (this.supportsIntegratedFind) {
       appConfig.toolbar?.viewFind?.classList.add("hidden");
     }
-    this.initPassiveLoading(file);
-    const {
-      mainContainer
-    } = appConfig;
-    ({
-      scrollTop: this._lastScrollTop,
-      scrollLeft: this._lastScrollLeft
-    } = mainContainer);
-    const scroll = () => {
-      if (this._lastScrollTop === mainContainer.scrollTop && this._lastScrollLeft === mainContainer.scrollLeft) {
-        return;
-      }
-      mainContainer.removeEventListener("scroll", scroll, {
-        passive: true
-      });
-      this._isScrolling = true;
-      const scrollend = () => {
-        ({
-          scrollTop: this._lastScrollTop,
-          scrollLeft: this._lastScrollLeft
-        } = mainContainer);
-        this._isScrolling = false;
-        mainContainer.addEventListener("scroll", scroll, {
-          passive: true
-        });
-        mainContainer.removeEventListener("scrollend", scrollend);
-        mainContainer.removeEventListener("blur", scrollend);
-      };
-      mainContainer.addEventListener("scrollend", scrollend);
-      mainContainer.addEventListener("blur", scrollend);
-    };
-    mainContainer.addEventListener("scroll", scroll, {
-      passive: true
-    });
+    this.setTitleUsingUrl(file, file);
+    this.externalServices.initPassiveLoading();
   },
   get externalServices() {
     return shadow(this, "externalServices", new ExternalServices());
@@ -10939,45 +10954,12 @@ const PDFViewerApplication = {
     return shadow(this, "supportsMouseWheelZoomMetaKey", AppOptions.get("supportsMouseWheelZoomMetaKey"));
   },
   get supportsCaretBrowsingMode() {
-    return shadow(this, "supportsCaretBrowsingMode", AppOptions.get("supportsCaretBrowsingMode"));
+    return AppOptions.get("supportsCaretBrowsingMode");
   },
   moveCaret(isUp, select) {
     this._caretBrowsing ||= new CaretBrowsingMode(this.appConfig.mainContainer, this.appConfig.viewerContainer, this.appConfig.toolbar?.container);
     this._caretBrowsing.moveCaret(isUp, select);
   },
-  initPassiveLoading(file) {
-    this.setTitleUsingUrl(file, file);
-    this.externalServices.initPassiveLoading({
-      onOpenWithTransport: range => {
-        this.open({
-          range
-        });
-      },
-      onOpenWithData: (data, contentDispositionFilename) => {
-        if (isPdfFile(contentDispositionFilename)) {
-          this._contentDispositionFilename = contentDispositionFilename;
-        }
-        this.open({
-          data
-        });
-      },
-      onOpenWithURL: (url, length, originalUrl) => {
-        this.open({
-          url,
-          length,
-          originalUrl
-        });
-      },
-      onError: err => {
-        this.l10n.get("pdfjs-loading-error").then(msg => {
-          this._documentError(msg, err);
-        });
-      },
-      onProgress: (loaded, total) => {
-        this.progress(loaded / total);
-      }
-    });
-  },
   setTitleUsingUrl(url = "", downloadUrl = null) {
     this.url = url;
     this.baseUrl = url.split("#", 1)[0];
@@ -11065,6 +11047,9 @@ const PDFViewerApplication = {
     }
     const workerParams = AppOptions.getAll(OptionKind.WORKER);
     Object.assign(GlobalWorkerOptions, workerParams);
+    if (args.data && isPdfFile(args.filename)) {
+      this._contentDispositionFilename = args.filename;
+    }
     AppOptions.set("docBaseUrl", this.baseUrl);
     const apiParams = AppOptions.getAll(OptionKind.API);
     const loadingTask = getDocument({
@@ -11100,10 +11085,9 @@ const PDFViewerApplication = {
       } else if (reason instanceof UnexpectedResponseException) {
         key = "pdfjs-unexpected-response-error";
       }
-      return this.l10n.get(key).then(msg => {
-        this._documentError(msg, {
-          message: reason?.message
-        });
+      return this._documentError(key, {
+        message: reason.message
+      }).then(() => {
         throw reason;
       });
     });
@@ -11167,21 +11151,17 @@ const PDFViewerApplication = {
       this.download(options);
     }
   },
-  openInExternalApp() {
-    this.downloadOrSave({
-      openInExternalApp: true
-    });
-  },
-  _documentError(message, moreInfo = null) {
+  async _documentError(key, moreInfo = null) {
     this._unblockDocumentLoadEvent();
-    this._otherError(message, moreInfo);
+    const message = await this._otherError(key || "pdfjs-loading-error", moreInfo);
     this.eventBus.dispatch("documenterror", {
       source: this,
       message,
       reason: moreInfo?.message ?? null
     });
   },
-  _otherError(message, moreInfo = 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: ${moreInfo.message}`);
@@ -11197,6 +11177,7 @@ const PDFViewerApplication = {
       }
     }
     console.error(`${message}\n\n${moreInfoText.join("\n")}`);
+    return message;
   },
   progress(level) {
     if (!this.loadingBar || this.downloadComplete) {
@@ -11321,10 +11302,8 @@ const PDFViewerApplication = {
       this._unblockDocumentLoadEvent();
       this._initializeAutoPrint(pdfDocument, openActionPromise);
     }, reason => {
-      this.l10n.get("pdfjs-loading-error").then(msg => {
-        this._documentError(msg, {
-          message: reason?.message
-        });
+      this._documentError("pdfjs-loading-error", {
+        message: reason.message
       });
     });
     onePageRendered.then(data => {
@@ -11603,9 +11582,7 @@ const PDFViewerApplication = {
       return;
     }
     if (!this.supportsPrinting) {
-      this.l10n.get("pdfjs-printing-not-supported").then(msg => {
-        this._otherError(msg);
-      });
+      this._otherError("pdfjs-printing-not-supported");
       return;
     }
     if (!this.pdfViewer.pageViewsReady) {
@@ -11619,7 +11596,6 @@ const PDFViewerApplication = {
       pagesOverview: this.pdfViewer.getPagesOverview(),
       printContainer: this.appConfig.printContainer,
       printResolution: AppOptions.get("printResolution"),
-      optionalContentConfigPromise: this.pdfViewer.optionalContentConfigPromise,
       printAnnotationStoragePromise: this._printAnnotationStoragePromise
     });
     this.forceRendering();
@@ -11688,7 +11664,6 @@ const PDFViewerApplication = {
     eventBus._on("switchannotationeditorparams", webViewerSwitchAnnotationEditorParams);
     eventBus._on("print", webViewerPrint);
     eventBus._on("download", webViewerDownload);
-    eventBus._on("openinexternalapp", webViewerOpenInExternalApp);
     eventBus._on("firstpage", webViewerFirstPage);
     eventBus._on("lastpage", webViewerLastPage);
     eventBus._on("nextpage", webViewerNextPage);
@@ -11720,7 +11695,10 @@ const PDFViewerApplication = {
   bindWindowEvents() {
     const {
       eventBus,
-      _boundEvents
+      _boundEvents,
+      appConfig: {
+        mainContainer
+      }
     } = this;
     function addWindowResolutionChange(evt = null) {
       if (evt) {
@@ -11780,12 +11758,79 @@ const PDFViewerApplication = {
     window.addEventListener("beforeprint", _boundEvents.windowBeforePrint);
     window.addEventListener("afterprint", _boundEvents.windowAfterPrint);
     window.addEventListener("updatefromsandbox", _boundEvents.windowUpdateFromSandbox);
+    ({
+      scrollTop: this._lastScrollTop,
+      scrollLeft: this._lastScrollLeft
+    } = mainContainer);
+    const scrollend = _boundEvents.mainContainerScrollend = () => {
+      ({
+        scrollTop: this._lastScrollTop,
+        scrollLeft: this._lastScrollLeft
+      } = mainContainer);
+      this._isScrolling = false;
+      mainContainer.addEventListener("scroll", scroll, {
+        passive: true
+      });
+      mainContainer.removeEventListener("scrollend", scrollend);
+      mainContainer.removeEventListener("blur", scrollend);
+    };
+    const scroll = _boundEvents.mainContainerScroll = () => {
+      if (this._isCtrlKeyDown || this._lastScrollTop === mainContainer.scrollTop && this._lastScrollLeft === mainContainer.scrollLeft) {
+        return;
+      }
+      mainContainer.removeEventListener("scroll", scroll, {
+        passive: true
+      });
+      this._isScrolling = true;
+      mainContainer.addEventListener("scrollend", scrollend);
+      mainContainer.addEventListener("blur", scrollend);
+    };
+    mainContainer.addEventListener("scroll", scroll, {
+      passive: true
+    });
   },
   unbindEvents() {
     throw new Error("Not implemented: unbindEvents");
   },
   unbindWindowEvents() {
-    throw new Error("Not implemented: unbindWindowEvents");
+    const {
+      _boundEvents,
+      appConfig: {
+        mainContainer
+      }
+    } = this;
+    window.removeEventListener("visibilitychange", webViewerVisibilityChange);
+    window.removeEventListener("wheel", webViewerWheel, {
+      passive: false
+    });
+    window.removeEventListener("touchstart", webViewerTouchStart, {
+      passive: false
+    });
+    window.removeEventListener("touchmove", webViewerTouchMove, {
+      passive: false
+    });
+    window.removeEventListener("touchend", webViewerTouchEnd, {
+      passive: false
+    });
+    window.removeEventListener("click", webViewerClick);
+    window.removeEventListener("keydown", webViewerKeyDown);
+    window.removeEventListener("keyup", webViewerKeyUp);
+    window.removeEventListener("resize", _boundEvents.windowResize);
+    window.removeEventListener("hashchange", _boundEvents.windowHashChange);
+    window.removeEventListener("beforeprint", _boundEvents.windowBeforePrint);
+    window.removeEventListener("afterprint", _boundEvents.windowAfterPrint);
+    window.removeEventListener("updatefromsandbox", _boundEvents.windowUpdateFromSandbox);
+    mainContainer.removeEventListener("scroll", _boundEvents.mainContainerScroll);
+    mainContainer.removeEventListener("scrollend", _boundEvents.mainContainerScrollend);
+    mainContainer.removeEventListener("blur", _boundEvents.mainContainerScrollend);
+    _boundEvents.removeWindowResolutionChange?.();
+    _boundEvents.windowResize = null;
+    _boundEvents.windowHashChange = null;
+    _boundEvents.windowBeforePrint = null;
+    _boundEvents.windowAfterPrint = null;
+    _boundEvents.windowUpdateFromSandbox = null;
+    _boundEvents.mainContainerScroll = null;
+    _boundEvents.mainContainerScrollend = null;
   },
   _accumulateTicks(ticks, prop) {
     if (this[prop] > 0 && ticks < 0 || this[prop] < 0 && ticks > 0) {
@@ -11868,9 +11913,7 @@ function webViewerPageRendered({
     }
   }
   if (error) {
-    PDFViewerApplication.l10n.get("pdfjs-rendering-error").then(msg => {
-      PDFViewerApplication._otherError(msg, error);
-    });
+    PDFViewerApplication._otherError("pdfjs-rendering-error", error);
   }
 }
 function webViewerPageMode({
@@ -12000,9 +12043,6 @@ function webViewerPrint() {
 function webViewerDownload() {
   PDFViewerApplication.downloadOrSave();
 }
-function webViewerOpenInExternalApp() {
-  PDFViewerApplication.openInExternalApp();
-}
 function webViewerFirstPage() {
   PDFViewerApplication.page = 1;
 }
@@ -12591,8 +12631,8 @@ function webViewerReportTelemetry({
 
 
 
-const pdfjsVersion = "4.1.249";
-const pdfjsBuild = "d07f37f44";
+const pdfjsVersion = "4.1.342";
+const pdfjsBuild = "e384df6f1";
 const AppConstants = null;
 window.PDFViewerApplication = PDFViewerApplication;
 window.PDFViewerApplicationConstants = AppConstants;
@@ -12718,7 +12758,8 @@ function getViewerConfiguration() {
       editorInkThickness: document.getElementById("editorInkThickness"),
       editorInkOpacity: document.getElementById("editorInkOpacity"),
       editorStampAddImage: document.getElementById("editorStampAddImage"),
-      editorFreeHighlightThickness: document.getElementById("editorFreeHighlightThickness")
+      editorFreeHighlightThickness: document.getElementById("editorFreeHighlightThickness"),
+      editorHighlightShowAll: document.getElementById("editorHighlightShowAll")
     },
     printContainer: document.getElementById("printContainer")
   };