| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| 'use strict'; |
| |
| /** |
| * @typedef {{ |
| * source: Object, |
| * origin: string, |
| * data: !MessageData, |
| * }} |
| */ |
| let MessageObject; |
| |
| /** |
| * @typedef {{ |
| * type: string, |
| * height: number, |
| * width: number, |
| * layoutOptions: (!LayoutOptions|undefined), |
| * pageDimensions: Array |
| * }} |
| */ |
| let DocumentDimensionsMessageData; |
| |
| /** |
| * @typedef {{ |
| * type: string, |
| * url: string, |
| * disposition: !PdfNavigator.WindowOpenDisposition, |
| * }} |
| */ |
| let NavigateMessageData; |
| |
| /** |
| * @typedef {{ |
| * type: string, |
| * page: number, |
| * x: number, |
| * y: number, |
| * zoom: number |
| * }} |
| */ |
| let DestinationMessageData; |
| |
| /** |
| * @typedef {{ |
| * type: string, |
| * title: string, |
| * bookmarks: !Array<!Bookmark>, |
| * canSerializeDocument: boolean, |
| * }} |
| */ |
| let MetadataMessageData; |
| |
| /** |
| * @typedef {{ |
| * hasUnsavedChanges: (boolean|undefined), |
| * fileName: string, |
| * dataToSave: !ArrayBuffer |
| * }} |
| */ |
| let RequiredSaveResult; |
| |
| /** @return {number} Width of a scrollbar in pixels */ |
| function getScrollbarWidth() { |
| const div = document.createElement('div'); |
| div.style.visibility = 'hidden'; |
| div.style.overflow = 'scroll'; |
| div.style.width = '50px'; |
| div.style.height = '50px'; |
| div.style.position = 'absolute'; |
| document.body.appendChild(div); |
| const result = div.offsetWidth - div.clientWidth; |
| div.parentNode.removeChild(div); |
| return result; |
| } |
| |
| /** |
| * Return the filename component of a URL, percent decoded if possible. |
| * @param {string} url The URL to get the filename from. |
| * @return {string} The filename component. |
| */ |
| function getFilenameFromURL(url) { |
| // Ignore the query and fragment. |
| const mainUrl = url.split(/#|\?/)[0]; |
| const components = mainUrl.split(/\/|\\/); |
| const filename = components[components.length - 1]; |
| try { |
| return decodeURIComponent(filename); |
| } catch (e) { |
| if (e instanceof URIError) { |
| return filename; |
| } |
| throw e; |
| } |
| } |
| |
| /** |
| * Whether keydown events should currently be ignored. Events are ignored when |
| * an editable element has focus, to allow for proper editing controls. |
| * @param {Element} activeElement The currently selected DOM node. |
| * @return {boolean} True if keydown events should be ignored. |
| */ |
| function shouldIgnoreKeyEvents(activeElement) { |
| while (activeElement.shadowRoot != null && |
| activeElement.shadowRoot.activeElement != null) { |
| activeElement = activeElement.shadowRoot.activeElement; |
| } |
| |
| return ( |
| activeElement.isContentEditable || |
| (activeElement.tagName == 'INPUT' && activeElement.type != 'radio') || |
| activeElement.tagName == 'TEXTAREA'); |
| } |
| |
| /** |
| * Creates a new PDFViewer. There should only be one of these objects per |
| * document. |
| */ |
| class PDFViewer { |
| /** |
| * @param {!BrowserApi} browserApi An object providing an API to the browser. |
| */ |
| constructor(browserApi) { |
| /** @private {!BrowserApi} */ |
| this.browserApi_ = browserApi; |
| |
| /** @private {string} */ |
| this.originalUrl_ = this.browserApi_.getStreamInfo().originalUrl; |
| |
| /** @private {string} */ |
| this.javascript_ = this.browserApi_.getStreamInfo().javascript || 'block'; |
| |
| /** @private {!LoadState} */ |
| this.loadState_ = LoadState.LOADING; |
| |
| /** @private {?Object} */ |
| this.parentWindow_ = null; |
| |
| /** @private {?string} */ |
| this.parentOrigin_ = null; |
| |
| /** @private {boolean} */ |
| this.isFormFieldFocused_ = false; |
| |
| /** @private {number} */ |
| this.beepCount_ = 0; |
| |
| /** @private {!Array} */ |
| this.delayedScriptingMessages_ = []; |
| |
| /** @private {!PromiseResolver} */ |
| this.loaded_; |
| |
| /** @private {boolean} */ |
| this.initialLoadComplete_ = false; |
| |
| /** @private {boolean} */ |
| this.isPrintPreview_ = location.origin === 'chrome://print'; |
| |
| /** @private {boolean} */ |
| this.isPrintPreviewLoadingFinished_ = false; |
| |
| /** @private {boolean} */ |
| this.isUserInitiatedEvent_ = true; |
| |
| /** @private {boolean} */ |
| this.hasEnteredAnnotationMode_ = false; |
| |
| /** @private {boolean} */ |
| this.hadPassword_ = false; |
| |
| /** @private {boolean} */ |
| this.canSerializeDocument_ = false; |
| |
| /** @private {!EventTracker} */ |
| this.tracker_ = new EventTracker(); |
| |
| PDFMetrics.record(PDFMetrics.UserAction.DOCUMENT_OPENED); |
| |
| // Parse open pdf parameters. |
| /** @private {!OpenPdfParamsParser} */ |
| this.paramsParser_ = new OpenPdfParamsParser( |
| destination => this.pluginController_.getNamedDestination(destination)); |
| const toolbarEnabled = |
| this.paramsParser_.getUiUrlParams(this.originalUrl_).toolbar && |
| !this.isPrintPreview_; |
| |
| // The sizer element is placed behind the plugin element to cause scrollbars |
| // to be displayed in the window. It is sized according to the document size |
| // of the pdf and zoom level. |
| this.sizer_ = /** @type {!HTMLDivElement} */ ($('sizer')); |
| |
| /** @private {?ViewerPageIndicatorElement} */ |
| this.pageIndicator_ = this.isPrintPreview_ ? |
| /** @type {!ViewerPageIndicatorElement} */ ($('page-indicator')) : |
| null; |
| |
| /** @private {?ViewerPasswordScreenElement} */ |
| this.passwordScreen_ = |
| /** @type {!ViewerPasswordScreenElement} */ ($('password-screen')); |
| this.passwordScreen_.addEventListener('password-submitted', e => { |
| this.onPasswordSubmitted_( |
| /** @type {!CustomEvent<{password: string}>} */ (e)); |
| }); |
| |
| /** @private {?ViewerErrorScreenElement} */ |
| this.errorScreen_ = |
| /** @type {!ViewerErrorScreenElement} */ ($('error-screen')); |
| // Can only reload if we are in a normal tab. |
| if (chrome.tabs && this.browserApi_.getStreamInfo().tabId != -1) { |
| this.errorScreen_.reloadFn = () => { |
| chrome.tabs.reload(this.browserApi_.getStreamInfo().tabId); |
| }; |
| } |
| |
| // Create the viewport. |
| const shortWindow = |
| window.innerHeight < PDFViewer.TOOLBAR_WINDOW_MIN_HEIGHT; |
| const topToolbarHeight = |
| (toolbarEnabled) ? PDFViewer.MATERIAL_TOOLBAR_HEIGHT : 0; |
| const defaultZoom = |
| this.browserApi_.getZoomBehavior() == BrowserApi.ZoomBehavior.MANAGE ? |
| this.browserApi_.getDefaultZoom() : |
| 1.0; |
| |
| /** @private {!Viewport} */ |
| this.viewport_ = new Viewport( |
| window, this.sizer_, getScrollbarWidth(), defaultZoom, |
| topToolbarHeight); |
| this.viewport_.setViewportChangedCallback(() => this.viewportChanged_()); |
| this.viewport_.setBeforeZoomCallback( |
| () => this.currentController_.beforeZoom()); |
| this.viewport_.setAfterZoomCallback( |
| () => this.currentController_.afterZoom()); |
| this.viewport_.setUserInitiatedCallback( |
| userInitiated => this.setUserInitiated_(userInitiated)); |
| window.addEventListener('beforeunload', () => this.resetTrackers_()); |
| |
| // Create the plugin object dynamically so we can set its src. The plugin |
| // element is sized to fill the entire window and is set to be fixed |
| // positioning, acting as a viewport. The plugin renders into this viewport |
| // according to the scroll position of the window. |
| /** @private {!HTMLEmbedElement} */ |
| this.plugin_ = |
| /** @type {!HTMLEmbedElement} */ (document.createElement('embed')); |
| |
| // NOTE: The plugin's 'id' field must be set to 'plugin' since |
| // chrome/renderer/printing/print_render_frame_helper.cc actually |
| // references it. |
| this.plugin_.id = 'plugin'; |
| this.plugin_.type = 'application/x-google-chrome-pdf'; |
| |
| // Handle scripting messages from outside the extension that wish to |
| // interact with it. We also send a message indicating that extension has |
| // loaded and is ready to receive messages. |
| window.addEventListener('message', message => { |
| this.handleScriptingMessage(/** @type {!MessageObject} */ (message)); |
| }, false); |
| |
| this.plugin_.setAttribute('src', this.originalUrl_); |
| this.plugin_.setAttribute( |
| 'stream-url', this.browserApi_.getStreamInfo().streamUrl); |
| let headers = ''; |
| for (const header in this.browserApi_.getStreamInfo().responseHeaders) { |
| headers += header + ': ' + |
| this.browserApi_.getStreamInfo().responseHeaders[header] + '\n'; |
| } |
| this.plugin_.setAttribute('headers', headers); |
| |
| this.plugin_.setAttribute('background-color', PDFViewer.BACKGROUND_COLOR); |
| this.plugin_.setAttribute('top-toolbar-height', topToolbarHeight); |
| this.plugin_.setAttribute('javascript', this.javascript_); |
| |
| if (this.browserApi_.getStreamInfo().embedded) { |
| this.plugin_.setAttribute( |
| 'top-level-url', this.browserApi_.getStreamInfo().tabUrl); |
| } else { |
| this.plugin_.setAttribute('full-frame', ''); |
| } |
| |
| $('content').appendChild(this.plugin_); |
| |
| /** @private {!PluginController} */ |
| this.pluginController_ = new PluginController( |
| this.plugin_, this.viewport_, () => this.isUserInitiatedEvent_, |
| () => this.loaded); |
| this.tracker_.add( |
| this.pluginController_.getEventTarget(), 'plugin-message', |
| e => this.handlePluginMessage_(e)); |
| |
| /** @private {!InkController} */ |
| this.inkController_ = new InkController(this.viewport_); |
| this.tracker_.add( |
| this.inkController_.getEventTarget(), 'stroke-added', |
| () => chrome.mimeHandlerPrivate.setShowBeforeUnloadDialog(true)); |
| this.tracker_.add( |
| this.inkController_.getEventTarget(), 'set-annotation-undo-state', |
| e => this.setAnnotationUndoState_(e)); |
| |
| /** @private {!ContentController} */ |
| this.currentController_ = this.pluginController_; |
| |
| // Setup the button event listeners. |
| /** @private {!ViewerZoomToolbarElement} */ |
| this.zoomToolbar_ = |
| /** @type {!ViewerZoomToolbarElement} */ ($('zoom-toolbar')); |
| this.zoomToolbar_.setIsPrintPreview(this.isPrintPreview_); |
| this.zoomToolbar_.addEventListener( |
| 'fit-to-changed', |
| e => this.fitToChanged_( |
| /** @type {!CustomEvent<FitToChangedEvent>}} */ (e))); |
| this.zoomToolbar_.addEventListener( |
| 'zoom-in', () => this.viewport_.zoomIn()); |
| this.zoomToolbar_.addEventListener( |
| 'zoom-out', () => this.viewport_.zoomOut()); |
| |
| /** @private {!GestureDetector} */ |
| this.gestureDetector_ = new GestureDetector(assert($('content'))); |
| this.gestureDetector_.addEventListener( |
| 'pinchstart', e => this.onPinchStart_(e)); |
| this.sentPinchEvent_ = false; |
| this.gestureDetector_.addEventListener( |
| 'pinchupdate', e => this.onPinchUpdate_(e)); |
| this.gestureDetector_.addEventListener( |
| 'pinchend', e => this.onPinchEnd_(e)); |
| |
| /** @private {?ViewerPdfToolbarElement} */ |
| this.toolbar_ = null; |
| if (toolbarEnabled) { |
| this.toolbar_ = /** @type {!ViewerPdfToolbarElement} */ ($('toolbar')); |
| this.toolbar_.hidden = false; |
| this.toolbar_.addEventListener('save', () => this.save_()); |
| this.toolbar_.addEventListener('print', () => this.print_()); |
| this.toolbar_.addEventListener( |
| 'undo', () => this.currentController_.undo()); |
| this.toolbar_.addEventListener( |
| 'redo', () => this.currentController_.redo()); |
| this.toolbar_.addEventListener( |
| 'rotate-right', () => this.rotateClockwise_()); |
| this.toolbar_.addEventListener('annotation-mode-toggled', e => { |
| this.annotationModeToggled_( |
| /** @type {!CustomEvent<{value: boolean}>} */ (e)); |
| }); |
| this.toolbar_.addEventListener( |
| 'annotation-tool-changed', |
| e => this.inkController_.setAnnotationTool(e.detail.value)); |
| |
| this.toolbar_.docTitle = getFilenameFromURL(this.originalUrl_); |
| } |
| |
| document.body.addEventListener('change-page', e => { |
| this.viewport_.goToPage(e.detail.page); |
| if (e.detail.origin == 'bookmark') { |
| PDFMetrics.record(PDFMetrics.UserAction.FOLLOW_BOOKMARK); |
| } else if (e.detail.origin == 'pageselector') { |
| PDFMetrics.record(PDFMetrics.UserAction.PAGE_SELECTOR_NAVIGATE); |
| } |
| }); |
| |
| document.body.addEventListener('change-zoom', e => { |
| this.viewport_.setZoom(e.detail.zoom); |
| }); |
| |
| document.body.addEventListener('change-page-and-xy', e => { |
| const point = this.viewport_.convertPageToScreen(e.detail.page, e.detail); |
| this.goToPageAndXY_(e.detail.origin, e.detail.page, point); |
| }); |
| |
| document.body.addEventListener('navigate', e => { |
| const disposition = e.detail.newtab ? |
| PdfNavigator.WindowOpenDisposition.NEW_BACKGROUND_TAB : |
| PdfNavigator.WindowOpenDisposition.CURRENT_TAB; |
| this.navigator_.navigate(e.detail.uri, disposition); |
| }); |
| |
| document.body.addEventListener('dropdown-opened', e => { |
| if (e.detail == 'bookmarks') { |
| PDFMetrics.record(PDFMetrics.UserAction.OPEN_BOOKMARKS_PANEL); |
| } |
| }); |
| |
| /** @private {!ToolbarManager} */ |
| this.toolbarManager_ = |
| new ToolbarManager(window, this.toolbar_, this.zoomToolbar_); |
| |
| // Set up the ZoomManager. |
| /** @private {!ZoomManager} */ |
| this.zoomManager_ = ZoomManager.create( |
| this.browserApi_.getZoomBehavior(), () => this.viewport_.getZoom(), |
| zoom => this.browserApi_.setZoom(zoom), |
| this.browserApi_.getInitialZoom()); |
| this.viewport_.setZoomManager(this.zoomManager_); |
| this.browserApi_.addZoomEventListener( |
| zoom => this.zoomManager_.onBrowserZoomChange(zoom)); |
| |
| // Setup the keyboard event listener. |
| document.addEventListener( |
| 'keydown', |
| e => this.handleKeyEvent_(/** @type {!KeyboardEvent} */ (e))); |
| document.addEventListener('mousemove', e => this.handleMouseEvent_(e)); |
| document.addEventListener('mouseout', e => this.handleMouseEvent_(e)); |
| document.addEventListener( |
| 'contextmenu', e => this.handleContextMenuEvent_(e)); |
| |
| const tabId = this.browserApi_.getStreamInfo().tabId; |
| /** @private {!PdfNavigator} */ |
| this.navigator_ = new PdfNavigator( |
| this.originalUrl_, this.viewport_, this.paramsParser_, |
| new NavigatorDelegate(tabId)); |
| |
| /** @private {!ViewportScroller} */ |
| this.viewportScroller_ = |
| new ViewportScroller(this.viewport_, this.plugin_, window); |
| |
| /** @private {!Array<!Bookmark>} */ |
| this.bookmarks_; |
| |
| /** @private {!Point} */ |
| this.lastViewportPosition_; |
| |
| /** @private {boolean} */ |
| this.reverseZoomToolbar_; |
| |
| /** @private {boolean} */ |
| this.inPrintPreviewMode_; |
| |
| /** @private {boolean} */ |
| this.dark_; |
| |
| /** @private {!DocumentDimensionsMessageData} */ |
| this.documentDimensions_; |
| |
| // Request translated strings. |
| chrome.resourcesPrivate.getStrings( |
| chrome.resourcesPrivate.Component.PDF, |
| strings => this.handleStrings_(strings)); |
| |
| // Listen for save commands from the browser. |
| if (chrome.mimeHandlerPrivate && chrome.mimeHandlerPrivate.onSave) { |
| chrome.mimeHandlerPrivate.onSave.addListener(url => this.onSave_(url)); |
| } |
| } |
| |
| /** |
| * Handle key events. These may come from the user directly or via the |
| * scripting API. |
| * @param {!KeyboardEvent} e the event to handle. |
| * @private |
| */ |
| handleKeyEvent_(e) { |
| const position = this.viewport_.position; |
| // Certain scroll events may be sent from outside of the extension. |
| const fromScriptingAPI = e.fromScriptingAPI; |
| |
| if (shouldIgnoreKeyEvents(document.activeElement) || e.defaultPrevented) { |
| return; |
| } |
| |
| this.toolbarManager_.hideToolbarsAfterTimeout(); |
| |
| const pageUpHandler = () => { |
| // Go to the previous page if we are fit-to-page or fit-to-height. |
| if (this.viewport_.isPagedMode()) { |
| this.viewport_.goToPreviousPage(); |
| // Since we do the movement of the page. |
| e.preventDefault(); |
| } else if (fromScriptingAPI) { |
| position.y -= this.viewport_.size.height; |
| this.viewport_.position = position; |
| } |
| }; |
| const pageDownHandler = () => { |
| // Go to the next page if we are fit-to-page or fit-to-height. |
| if (this.viewport_.isPagedMode()) { |
| this.viewport_.goToNextPage(); |
| // Since we do the movement of the page. |
| e.preventDefault(); |
| } else if (fromScriptingAPI) { |
| position.y += this.viewport_.size.height; |
| this.viewport_.position = position; |
| } |
| }; |
| |
| switch (e.keyCode) { |
| case 9: // Tab key. |
| this.toolbarManager_.showToolbarsForKeyboardNavigation(); |
| return; |
| case 27: // Escape key. |
| if (!this.isPrintPreview_) { |
| this.toolbarManager_.hideSingleToolbarLayer(); |
| return; |
| } |
| break; // Ensure escape falls through to the print-preview handler. |
| case 32: // Space key. |
| if (e.shiftKey) { |
| pageUpHandler(); |
| } else { |
| pageDownHandler(); |
| } |
| return; |
| case 33: // Page up key. |
| pageUpHandler(); |
| return; |
| case 34: // Page down key. |
| pageDownHandler(); |
| return; |
| case 37: // Left arrow key. |
| if (!hasKeyModifiers(e)) { |
| // Go to the previous page if there are no horizontal scrollbars and |
| // no form field is focused. |
| if (!(this.viewport_.documentHasScrollbars().horizontal || |
| this.isFormFieldFocused_)) { |
| this.viewport_.goToPreviousPage(); |
| // Since we do the movement of the page. |
| e.preventDefault(); |
| } else if (fromScriptingAPI) { |
| position.x -= Viewport.SCROLL_INCREMENT; |
| this.viewport_.position = position; |
| } |
| } |
| return; |
| case 38: // Up arrow key. |
| if (fromScriptingAPI) { |
| position.y -= Viewport.SCROLL_INCREMENT; |
| this.viewport_.position = position; |
| } |
| return; |
| case 39: // Right arrow key. |
| if (!hasKeyModifiers(e)) { |
| // Go to the next page if there are no horizontal scrollbars and no |
| // form field is focused. |
| if (!(this.viewport_.documentHasScrollbars().horizontal || |
| this.isFormFieldFocused_)) { |
| this.viewport_.goToNextPage(); |
| // Since we do the movement of the page. |
| e.preventDefault(); |
| } else if (fromScriptingAPI) { |
| position.x += Viewport.SCROLL_INCREMENT; |
| this.viewport_.position = position; |
| } |
| } |
| return; |
| case 40: // Down arrow key. |
| if (fromScriptingAPI) { |
| position.y += Viewport.SCROLL_INCREMENT; |
| this.viewport_.position = position; |
| } |
| return; |
| case 65: // 'a' key. |
| if (e.ctrlKey || e.metaKey) { |
| this.pluginController_.selectAll(); |
| // Since we do selection ourselves. |
| e.preventDefault(); |
| } |
| return; |
| case 71: // 'g' key. |
| if (this.toolbar_ && (e.ctrlKey || e.metaKey) && e.altKey) { |
| this.toolbarManager_.showToolbars(); |
| this.toolbar_.selectPageNumber(); |
| } |
| return; |
| case 219: // Left bracket key. |
| if (e.ctrlKey) { |
| this.rotateCounterclockwise_(); |
| } |
| return; |
| case 220: // Backslash key. |
| if (e.ctrlKey) { |
| this.zoomToolbar_.fitToggleFromHotKey(); |
| } |
| return; |
| case 221: // Right bracket key. |
| if (e.ctrlKey) { |
| this.rotateClockwise_(); |
| } |
| return; |
| } |
| |
| // Give print preview a chance to handle the key event. |
| if (!fromScriptingAPI && this.isPrintPreview_) { |
| this.sendScriptingMessage_( |
| {type: 'sendKeyEvent', keyEvent: SerializeKeyEvent(e)}); |
| } else { |
| // Show toolbars as a fallback. |
| if (!(e.shiftKey || e.ctrlKey || e.altKey)) { |
| this.toolbarManager_.showToolbars(); |
| } |
| } |
| } |
| |
| handleMouseEvent_(e) { |
| if (e.type == 'mousemove') { |
| this.toolbarManager_.handleMouseMove(e); |
| } else if (e.type == 'mouseout') { |
| this.toolbarManager_.hideToolbarsForMouseOut(); |
| } |
| } |
| |
| /** |
| * @param {!Event} e The context menu event |
| * @private |
| */ |
| handleContextMenuEvent_(e) { |
| // Stop Chrome from popping up the context menu on long press. We need to |
| // make sure the start event did not have 2 touches because we don't want |
| // to block two finger tap opening the context menu. We check for |
| // firesTouchEvents in order to not block the context menu on right click. |
| const capabilities = |
| /** @type {{ sourceCapabilities: Object }} */ (e).sourceCapabilities; |
| if (capabilities.firesTouchEvents && |
| !this.gestureDetector_.wasTwoFingerTouch()) { |
| e.preventDefault(); |
| } |
| } |
| |
| /** |
| * Handles the annotation mode being toggled on or off. |
| * @param {!CustomEvent<{value: boolean}>} e |
| * @private |
| */ |
| async annotationModeToggled_(e) { |
| const annotationMode = e.detail.value; |
| if (annotationMode) { |
| // Enter annotation mode. |
| assert(this.currentController_ == this.pluginController_); |
| // TODO(dstockwell): set plugin read-only, begin transition |
| this.updateProgress_(0); |
| // TODO(dstockwell): handle save failure |
| const saveResult = await this.pluginController_.save(true); |
| // Data always exists when save is called with requireResult = true. |
| const result = /** @type {!RequiredSaveResult} */ (saveResult); |
| if (result.hasUnsavedChanges) { |
| assert(!loadTimeData.getBoolean('pdfFormSaveEnabled')); |
| try { |
| await $('form-warning').show(); |
| } catch (e) { |
| // The user aborted entering annotation mode. Revert to the plugin. |
| this.toolbar_.annotationMode = false; |
| this.updateProgress_(100); |
| return; |
| } |
| } |
| PDFMetrics.record(PDFMetrics.UserAction.ENTER_ANNOTATION_MODE); |
| this.hasEnteredAnnotationMode_ = true; |
| // TODO(dstockwell): feed real progress data from the Ink component |
| this.updateProgress_(50); |
| await this.inkController_.load(result.fileName, result.dataToSave); |
| this.inkController_.setAnnotationTool( |
| assert(this.toolbar_.annotationTool)); |
| this.currentController_ = this.inkController_; |
| this.pluginController_.unload(); |
| this.updateProgress_(100); |
| } else { |
| // Exit annotation mode. |
| PDFMetrics.record(PDFMetrics.UserAction.EXIT_ANNOTATION_MODE); |
| assert(this.currentController_ == this.inkController_); |
| // TODO(dstockwell): set ink read-only, begin transition |
| this.updateProgress_(0); |
| // This runs separately to allow other consumers of `loaded` to queue |
| // up after this task. |
| this.loaded.then(() => { |
| this.currentController_ = this.pluginController_; |
| this.inkController_.unload(); |
| }); |
| // TODO(dstockwell): handle save failure |
| const saveResult = await this.inkController_.save(true); |
| // Data always exists when save is called with requireResult = true. |
| const result = /** @type {!RequiredSaveResult} */ (saveResult); |
| await this.pluginController_.load(result.fileName, result.dataToSave); |
| // Ensure the plugin gets the initial viewport. |
| this.pluginController_.afterZoom(); |
| } |
| } |
| |
| /** |
| * Exits annotation mode if active. |
| * @return {Promise<void>} |
| */ |
| async exitAnnotationMode_() { |
| if (!this.toolbar_.annotationMode) { |
| return; |
| } |
| this.toolbar_.toggleAnnotation(); |
| await this.loaded; |
| } |
| |
| /** |
| * Request to change the viewport fitting type. |
| * @param {!CustomEvent<FitToChangedEvent>} e |
| * @private |
| */ |
| fitToChanged_(e) { |
| if (e.detail.fittingType == FittingType.FIT_TO_PAGE) { |
| this.viewport_.fitToPage(); |
| this.toolbarManager_.forceHideTopToolbar(); |
| } else if (e.detail.fittingType == FittingType.FIT_TO_WIDTH) { |
| this.viewport_.fitToWidth(); |
| } else if (e.detail.fittingType == FittingType.FIT_TO_HEIGHT) { |
| this.viewport_.fitToHeight(); |
| this.toolbarManager_.forceHideTopToolbar(); |
| } |
| |
| if (e.detail.userInitiated) { |
| PDFMetrics.recordFitTo(e.detail.fittingType); |
| } |
| } |
| |
| /** |
| * Sends a 'documentLoaded' message to the PDFScriptingAPI if the document has |
| * finished loading. |
| * @private |
| */ |
| sendDocumentLoadedMessage_() { |
| if (this.loadState_ == LoadState.LOADING) { |
| return; |
| } |
| if (this.isPrintPreview_ && !this.isPrintPreviewLoadingFinished_) { |
| return; |
| } |
| this.sendScriptingMessage_( |
| {type: 'documentLoaded', load_state: this.loadState_}); |
| } |
| |
| /** |
| * Handle open pdf parameters. This function updates the viewport as per |
| * the parameters mentioned in the url while opening pdf. The order is |
| * important as later actions can override the effects of previous actions. |
| * @param {Object} params The open params passed in the URL. |
| * @private |
| */ |
| handleURLParams_(params) { |
| if (params.zoom) { |
| this.viewport_.setZoom(params.zoom); |
| } |
| |
| if (params.position) { |
| this.viewport_.goToPageAndXY( |
| params.page ? params.page : 0, params.position.x, params.position.y); |
| } else if (params.page) { |
| this.viewport_.goToPage(params.page); |
| } |
| |
| if (params.view) { |
| this.isUserInitiatedEvent_ = false; |
| this.zoomToolbar_.forceFit(params.view); |
| if (params.viewPosition) { |
| const zoomedPositionShift = |
| params.viewPosition * this.viewport_.getZoom(); |
| const currentViewportPosition = this.viewport_.position; |
| if (params.view == FittingType.FIT_TO_WIDTH) { |
| currentViewportPosition.y += zoomedPositionShift; |
| } else if (params.view == FittingType.FIT_TO_HEIGHT) { |
| currentViewportPosition.x += zoomedPositionShift; |
| } |
| this.viewport_.position = currentViewportPosition; |
| } |
| this.isUserInitiatedEvent_ = true; |
| } |
| } |
| |
| /** |
| * Moves the viewport to a point in a page. Called back after a |
| * 'transformPagePointReply' is returned from the plugin. |
| * @param {string} origin Identifier for the caller for logging purposes. |
| * @param {number} page The index of the page to go to. zero-based. |
| * @param {Point} message Message received from the plugin containing the |
| * x and y to navigate to in screen coordinates. |
| * @private |
| */ |
| goToPageAndXY_(origin, page, message) { |
| this.viewport_.goToPageAndXY(page, message.x, message.y); |
| if (origin == 'bookmark') { |
| PDFMetrics.record(PDFMetrics.UserAction.FOLLOW_BOOKMARK); |
| } |
| } |
| |
| /** |
| * @return {?Promise} Resolved when the load state reaches LOADED, |
| * rejects on FAILED. Returns null if no promise has been created, which |
| * is the case for initial load of the PDF. |
| */ |
| get loaded() { |
| return this.loaded_ ? this.loaded_.promise : null; |
| } |
| |
| /** @return {!Viewport} The viewport. Used for testing. */ |
| get viewport() { |
| return this.viewport_; |
| } |
| |
| /** @return {!Array<!Bookmark>} The bookmarks. Used for testing. */ |
| get bookmarks() { |
| return this.bookmarks_; |
| } |
| |
| /** |
| * Updates the load state and triggers completion of the `loaded` |
| * promise if necessary. |
| * @param {!LoadState} loadState |
| * @private |
| */ |
| setLoadState_(loadState) { |
| if (this.loadState_ == loadState) { |
| return; |
| } |
| assert( |
| loadState == LoadState.LOADING || this.loadState_ == LoadState.LOADING); |
| this.loadState_ = loadState; |
| if (!this.initialLoadComplete_) { |
| this.initialLoadComplete_ = true; |
| return; |
| } |
| if (loadState == LoadState.SUCCESS) { |
| this.loaded_.resolve(); |
| } else if (loadState == LoadState.FAILED) { |
| this.loaded_.reject(); |
| } else { |
| this.loaded_ = new PromiseResolver(); |
| } |
| } |
| |
| /** |
| * Update the loading progress of the document in response to a progress |
| * message being received from the content controller. |
| * @param {number} progress the progress as a percentage. |
| * @private |
| */ |
| updateProgress_(progress) { |
| if (this.toolbar_) { |
| this.toolbar_.loadProgress = progress; |
| } |
| |
| if (progress == -1) { |
| // Document load failed. |
| this.errorScreen_.show(); |
| this.sizer_.style.display = 'none'; |
| if (this.passwordScreen_.active) { |
| this.passwordScreen_.deny(); |
| this.passwordScreen_.close(); |
| } |
| this.setLoadState_(LoadState.FAILED); |
| this.isPrintPreviewLoadingFinished_ = true; |
| this.sendDocumentLoadedMessage_(); |
| } else if (progress == 100) { |
| // Document load complete. |
| if (this.lastViewportPosition_) { |
| this.viewport_.position = this.lastViewportPosition_; |
| } |
| this.paramsParser_.getViewportFromUrlParams( |
| this.originalUrl_, params => this.handleURLParams_(params)); |
| this.setLoadState_(LoadState.SUCCESS); |
| this.sendDocumentLoadedMessage_(); |
| while (this.delayedScriptingMessages_.length > 0) { |
| this.handleScriptingMessage(this.delayedScriptingMessages_.shift()); |
| } |
| |
| this.toolbarManager_.hideToolbarsAfterTimeout(); |
| } else { |
| this.setLoadState_(LoadState.LOADING); |
| } |
| } |
| |
| /** @private */ |
| sendBackgroundColorForPrintPreview_() { |
| this.pluginController_.backgroundColorChanged( |
| this.dark_ ? PDFViewer.PRINT_PREVIEW_DARK_BACKGROUND_COLOR : |
| PDFViewer.PRINT_PREVIEW_BACKGROUND_COLOR); |
| } |
| |
| /** |
| * Load a dictionary of translated strings into the UI. Used as a callback for |
| * chrome.resourcesPrivate. |
| * @param {Object} strings Dictionary of translated strings |
| * @private |
| */ |
| handleStrings_(strings) { |
| const stringsDictionary = |
| /** @type {{ textdirection: string, language: string }} */ (strings); |
| document.documentElement.dir = stringsDictionary.textdirection; |
| document.documentElement.lang = stringsDictionary.language; |
| |
| loadTimeData.data = strings; |
| const isNewPrintPreview = this.isPrintPreview_ && |
| loadTimeData.getBoolean('newPrintPreviewLayoutEnabled'); |
| if (isNewPrintPreview) { |
| this.sendBackgroundColorForPrintPreview_(); |
| this.toolbarManager_.reverseSideToolbar(); |
| } |
| this.reverseZoomToolbar_ = isNewPrintPreview; |
| this.zoomToolbar_.newPrintPreview = isNewPrintPreview; |
| |
| $('toolbar').strings = strings; |
| $('toolbar').pdfAnnotationsEnabled = |
| loadTimeData.getBoolean('pdfAnnotationsEnabled'); |
| $('toolbar').printingEnabled = loadTimeData.getBoolean('printingEnabled'); |
| $('zoom-toolbar').setStrings(strings); |
| $('password-screen').strings = strings; |
| $('error-screen').strings = strings; |
| if ($('form-warning')) { |
| $('form-warning').strings = strings; |
| } |
| } |
| |
| /** |
| * An event handler for handling password-submitted events. These are fired |
| * when an event is entered into the password screen. |
| * @param {!CustomEvent<{password: string}>} event a password-submitted event. |
| * @private |
| */ |
| onPasswordSubmitted_(event) { |
| this.pluginController_.getPasswordComplete(event.detail.password); |
| } |
| |
| /** |
| * A callback that sets |isUserInitiatedEvent_| to |userInitiated|. |
| * @param {boolean} userInitiated The value to set |isUserInitiatedEvent_| to. |
| * @private |
| */ |
| setUserInitiated_(userInitiated) { |
| assert(this.isUserInitiatedEvent_ != userInitiated); |
| this.isUserInitiatedEvent_ = userInitiated; |
| } |
| |
| /** |
| * A callback that's called when an update to a pinch zoom is detected. |
| * @param {!Object} e the pinch event. |
| * @private |
| */ |
| onPinchUpdate_(e) { |
| // Throttle number of pinch events to one per frame. |
| if (!this.sentPinchEvent_) { |
| this.sentPinchEvent_ = true; |
| window.requestAnimationFrame(() => { |
| this.sentPinchEvent_ = false; |
| this.viewport_.pinchZoom(e); |
| }); |
| } |
| } |
| |
| /** |
| * A callback that's called when the end of a pinch zoom is detected. |
| * @param {!Object} e the pinch event. |
| * @private |
| */ |
| onPinchEnd_(e) { |
| // Using rAF for pinch end prevents pinch updates scheduled by rAF getting |
| // sent after the pinch end. |
| window.requestAnimationFrame(() => { |
| this.viewport_.pinchZoomEnd(e); |
| }); |
| } |
| |
| /** |
| * A callback that's called when the start of a pinch zoom is detected. |
| * @param {!Object} e the pinch event. |
| * @private |
| */ |
| onPinchStart_(e) { |
| // We also use rAF for pinch start, so that if there is a pinch end event |
| // scheduled by rAF, this pinch start will be sent after. |
| window.requestAnimationFrame(() => { |
| this.viewport_.pinchZoomStart(e); |
| }); |
| } |
| |
| /** |
| * A callback that's called after the viewport changes. |
| * @private |
| */ |
| viewportChanged_() { |
| if (!this.documentDimensions_) { |
| return; |
| } |
| |
| // Offset the toolbar position so that it doesn't move if scrollbars appear. |
| const hasScrollbars = this.viewport_.documentHasScrollbars(); |
| const scrollbarWidth = this.viewport_.scrollbarWidth; |
| const verticalScrollbarWidth = hasScrollbars.vertical ? scrollbarWidth : 0; |
| const horizontalScrollbarWidth = |
| hasScrollbars.horizontal ? scrollbarWidth : 0; |
| |
| // Shift the zoom toolbar to the left by half a scrollbar width. This |
| // gives a compromise: if there is no scrollbar visible then the toolbar |
| // will be half a scrollbar width further left than the spec but if there |
| // is a scrollbar visible it will be half a scrollbar width further right |
| // than the spec. In RTL layout normally, and in LTR layout in Print Preview |
| // when the NewPrintPreview flag is enabled, the zoom toolbar is on the left |
| // left side, but the scrollbar is still on the right, so this is not |
| // necessary. |
| if (isRTL() === this.reverseZoomToolbar_) { |
| this.zoomToolbar_.style.right = |
| -verticalScrollbarWidth + (scrollbarWidth / 2) + 'px'; |
| } |
| // Having a horizontal scrollbar is much rarer so we don't offset the |
| // toolbar from the bottom any more than what the spec says. This means |
| // that when there is a scrollbar visible, it will be a full scrollbar |
| // width closer to the bottom of the screen than usual, but this is ok. |
| this.zoomToolbar_.style.bottom = -horizontalScrollbarWidth + 'px'; |
| |
| // Update the page indicator. |
| const visiblePage = this.viewport_.getMostVisiblePage(); |
| |
| if (this.toolbar_) { |
| this.toolbar_.pageNo = visiblePage + 1; |
| } |
| |
| // TODO(raymes): Give pageIndicator_ the same API as toolbar_. |
| if (this.pageIndicator_) { |
| this.pageIndicator_.index = visiblePage; |
| if (this.documentDimensions_.pageDimensions.length > 1 && |
| hasScrollbars.vertical) { |
| this.pageIndicator_.style.visibility = 'visible'; |
| } else { |
| this.pageIndicator_.style.visibility = 'hidden'; |
| } |
| } |
| |
| this.currentController_.viewportChanged(); |
| |
| const visiblePageDimensions = this.viewport_.getPageScreenRect(visiblePage); |
| const size = this.viewport_.size; |
| this.sendScriptingMessage_({ |
| type: 'viewport', |
| pageX: visiblePageDimensions.x, |
| pageY: visiblePageDimensions.y, |
| pageWidth: visiblePageDimensions.width, |
| viewportWidth: size.width, |
| viewportHeight: size.height |
| }); |
| } |
| |
| /** |
| * Handle a scripting message from outside the extension (typically sent by |
| * PDFScriptingAPI in a page containing the extension) to interact with the |
| * plugin. |
| * @param {!MessageObject} message The message to handle. |
| */ |
| handleScriptingMessage(message) { |
| if (this.parentWindow_ != message.source) { |
| this.parentWindow_ = message.source; |
| this.parentOrigin_ = message.origin; |
| // Ensure that we notify the embedder if the document is loaded. |
| if (this.loadState_ != LoadState.LOADING) { |
| this.sendDocumentLoadedMessage_(); |
| } |
| } |
| |
| if (this.handlePrintPreviewScriptingMessage_(message)) { |
| return; |
| } |
| |
| // Delay scripting messages from users of the scripting API until the |
| // document is loaded. This simplifies use of the APIs. |
| if (this.loadState_ != LoadState.SUCCESS) { |
| this.delayedScriptingMessages_.push(message); |
| return; |
| } |
| |
| switch (message.data.type.toString()) { |
| case 'getSelectedText': |
| this.pluginController_.getSelectedText(); |
| break; |
| case 'print': |
| this.pluginController_.print(); |
| break; |
| case 'selectAll': |
| this.pluginController_.selectAll(); |
| break; |
| } |
| } |
| |
| /** |
| * Handle scripting messages specific to print preview. |
| * @param {!MessageObject} message the message to handle. |
| * @return {boolean} true if the message was handled, false otherwise. |
| * @private |
| */ |
| handlePrintPreviewScriptingMessage_(message) { |
| if (!this.isPrintPreview_) { |
| return false; |
| } |
| |
| let messageData = message.data; |
| switch (messageData.type.toString()) { |
| case 'loadPreviewPage': |
| messageData = |
| /** @type {{ url: string, index: number }} */ (messageData); |
| this.pluginController_.loadPreviewPage( |
| messageData.url, messageData.index); |
| return true; |
| case 'resetPrintPreviewMode': |
| messageData = /** @type {!PrintPreviewParams} */ (messageData); |
| this.setLoadState_(LoadState.LOADING); |
| if (!this.inPrintPreviewMode_) { |
| this.inPrintPreviewMode_ = true; |
| this.isUserInitiatedEvent_ = false; |
| this.zoomToolbar_.forceFit(FittingType.FIT_TO_PAGE); |
| this.isUserInitiatedEvent_ = true; |
| } |
| |
| // Stash the scroll location so that it can be restored when the new |
| // document is loaded. |
| this.lastViewportPosition_ = this.viewport_.position; |
| |
| // TODO(raymes): Disable these properly in the plugin. |
| const printButton = $('print-button'); |
| if (printButton) { |
| printButton.parentNode.removeChild(printButton); |
| } |
| const saveButton = $('save-button'); |
| if (saveButton) { |
| saveButton.parentNode.removeChild(saveButton); |
| } |
| |
| this.pageIndicator_.pageLabels = messageData.pageNumbers; |
| |
| this.pluginController_.resetPrintPreviewMode(messageData); |
| return true; |
| case 'sendKeyEvent': |
| this.handleKeyEvent_(/** @type {!KeyboardEvent} */ (DeserializeKeyEvent( |
| /** @type {{ keyEvent: Object }} */ (message.data).keyEvent))); |
| return true; |
| case 'hideToolbars': |
| this.toolbarManager_.resetKeyboardNavigationAndHideToolbars(); |
| return true; |
| case 'darkModeChanged': |
| this.dark_ = /** @type {{darkMode: boolean}} */ (message.data).darkMode; |
| if (this.isPrintPreview_) { |
| this.sendBackgroundColorForPrintPreview_(); |
| } |
| return true; |
| case 'scrollPosition': |
| const position = this.viewport_.position; |
| messageData = /** @type {{ x: number, y: number }} */ (message.data); |
| position.y += messageData.y; |
| position.x += messageData.x; |
| this.viewport_.position = position; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Send a scripting message outside the extension (typically to |
| * PDFScriptingAPI in a page containing the extension). |
| * @param {Object} message the message to send. |
| * @private |
| */ |
| sendScriptingMessage_(message) { |
| if (this.parentWindow_ && this.parentOrigin_) { |
| let targetOrigin; |
| // Only send data back to the embedder if it is from the same origin, |
| // unless we're sending it to ourselves (which could happen in the case |
| // of tests). We also allow documentLoaded messages through as this won't |
| // leak important information. |
| if (this.parentOrigin_ == window.location.origin) { |
| targetOrigin = this.parentOrigin_; |
| } else if (message.type == 'documentLoaded') { |
| targetOrigin = '*'; |
| } else { |
| targetOrigin = this.originalUrl_; |
| } |
| this.parentWindow_.postMessage(message, targetOrigin); |
| } |
| } |
| |
| /** |
| * @param {!CustomEvent<MessageData>} e |
| * @private |
| */ |
| handlePluginMessage_(e) { |
| const data = e.detail; |
| switch (data.type.toString()) { |
| case 'beep': |
| this.handleBeep_(); |
| return; |
| case 'documentDimensions': |
| this.setDocumentDimensions_( |
| /** @type {!DocumentDimensionsMessageData} */ (data)); |
| return; |
| case 'getPassword': |
| this.handlePasswordRequest_(); |
| return; |
| case 'getSelectedTextReply': |
| this.handleSelectedTextReply_( |
| /** @type {{ selectedText: string }} */ (data).selectedText); |
| return; |
| case 'loadProgress': |
| this.updateProgress_( |
| /** @type {{ progress: number }} */ (data).progress); |
| return; |
| case 'navigate': |
| const navigateData = /** @type {!NavigateMessageData} */ (data); |
| this.handleNavigate_(navigateData.url, navigateData.disposition); |
| return; |
| case 'navigateToDestination': |
| const destinationData = /** @type {!DestinationMessageData} */ (data); |
| this.handleNavigateToDestination_( |
| destinationData.page, destinationData.x, destinationData.y, |
| destinationData.zoom); |
| return; |
| case 'printPreviewLoaded': |
| this.handlePrintPreviewLoaded_(); |
| return; |
| case 'metadata': |
| const metadata = /** @type {!MetadataMessageData} */ (data); |
| this.setDocumentMetadata_( |
| metadata.title, metadata.bookmarks, metadata.canSerializeDocument); |
| return; |
| case 'setIsSelecting': |
| this.setIsSelecting_( |
| /** @type {{ isSelecting: boolean }} */ (data).isSelecting); |
| return; |
| case 'getNamedDestinationReply': |
| this.paramsParser_.onNamedDestinationReceived( |
| /** @type {{ pageNumber: number }} */ (data).pageNumber); |
| return; |
| case 'formFocusChange': |
| this.isFormFieldFocused_ = |
| /** @type {{ focused: boolean }} */ (data).focused; |
| return; |
| } |
| assertNotReached('Unknown message type received: ' + data.type); |
| } |
| |
| /** |
| * Sets document dimensions from the current controller. |
| * @param {!DocumentDimensionsMessageData} documentDimensions |
| * @private |
| */ |
| setDocumentDimensions_(documentDimensions) { |
| this.documentDimensions_ = documentDimensions; |
| this.isUserInitiatedEvent_ = false; |
| this.viewport_.setDocumentDimensions(this.documentDimensions_); |
| this.isUserInitiatedEvent_ = true; |
| // If we received the document dimensions, the password was good so we |
| // can dismiss the password screen. |
| if (this.passwordScreen_.active) { |
| this.passwordScreen_.close(); |
| } |
| |
| if (this.toolbar_) { |
| this.toolbar_.docLength = this.documentDimensions_.pageDimensions.length; |
| } |
| } |
| |
| /** |
| * Handles a beep request from the current controller. |
| * @private |
| */ |
| handleBeep_() { |
| // Beeps are annoying, so just track count for now. |
| this.beepCount_ += 1; |
| } |
| |
| /** |
| * Handles a password request from the current controller. |
| * @private |
| */ |
| handlePasswordRequest_() { |
| // If the password screen isn't up, put it up. Otherwise we're |
| // responding to an incorrect password so deny it. |
| if (!this.passwordScreen_.active) { |
| this.hadPassword_ = true; |
| this.updateAnnotationAvailable_(); |
| this.passwordScreen_.show(); |
| } else { |
| this.passwordScreen_.deny(); |
| } |
| } |
| |
| /** |
| * Handles a selected text reply from the current controller. |
| * @param {string} selectedText |
| * @private |
| */ |
| handleSelectedTextReply_(selectedText) { |
| this.sendScriptingMessage_({ |
| type: 'getSelectedTextReply', |
| selectedText: selectedText, |
| }); |
| } |
| |
| /** |
| * Handles a navigation request from the current controller. |
| * @param {string} url |
| * @param {!PdfNavigator.WindowOpenDisposition} disposition |
| * @private |
| */ |
| handleNavigate_(url, disposition) { |
| // If in print preview, always open a new tab. |
| if (this.isPrintPreview_) { |
| this.navigator_.navigate( |
| url, PdfNavigator.WindowOpenDisposition.NEW_BACKGROUND_TAB); |
| } else { |
| this.navigator_.navigate(url, disposition); |
| } |
| } |
| |
| /** |
| * Handles an internal navigation request to a destination from the current |
| * controller. |
| * |
| * @param {number} page |
| * @param {number} x |
| * @param {number} y |
| * @param {number} zoom |
| * @private |
| */ |
| handleNavigateToDestination_(page, x, y, zoom) { |
| if (zoom) { |
| this.viewport_.setZoom(zoom); |
| } |
| |
| if (x || y) { |
| this.viewport_.goToPageAndXY(page, x ? x : 0, y ? y : 0); |
| } else { |
| this.viewport_.goToPage(page); |
| } |
| } |
| |
| /** |
| * Handles a notification that print preview has loaded from the |
| * current controller. |
| * @private |
| */ |
| handlePrintPreviewLoaded_() { |
| this.isPrintPreviewLoadingFinished_ = true; |
| this.sendDocumentLoadedMessage_(); |
| } |
| |
| /** |
| * Sets document metadata from the current controller. |
| * @param {string} title |
| * @param {!Array<!Bookmark>} bookmarks |
| * @param {boolean} canSerializeDocument |
| * @private |
| */ |
| setDocumentMetadata_(title, bookmarks, canSerializeDocument) { |
| if (title) { |
| document.title = title; |
| } else { |
| document.title = getFilenameFromURL(this.originalUrl_); |
| } |
| this.bookmarks_ = bookmarks; |
| if (this.toolbar_) { |
| this.toolbar_.docTitle = document.title; |
| this.toolbar_.bookmarks = this.bookmarks_; |
| } |
| this.canSerializeDocument_ = canSerializeDocument; |
| this.updateAnnotationAvailable_(); |
| } |
| |
| /** |
| * Sets the is selecting flag from the current controller. |
| * @param {boolean} isSelecting |
| * @private |
| */ |
| setIsSelecting_(isSelecting) { |
| this.viewportScroller_.setEnableScrolling(isSelecting); |
| } |
| |
| /** |
| * An event handler for when the browser tells the PDF Viewer to perform a |
| * save. |
| * @param {string} streamUrl unique identifier for a PDF Viewer instance. |
| * @private |
| */ |
| async onSave_(streamUrl) { |
| if (streamUrl != this.browserApi_.getStreamInfo().streamUrl) { |
| return; |
| } |
| |
| this.save_(); |
| } |
| |
| /** |
| * Saves the current PDF document to disk. |
| * @private |
| */ |
| async save_() { |
| PDFMetrics.record(PDFMetrics.UserAction.SAVE); |
| if (this.hasEnteredAnnotationMode_) { |
| PDFMetrics.record(PDFMetrics.UserAction.SAVE_WITH_ANNOTATION); |
| } |
| // If we have entered annotation mode we must require the local |
| // contents to ensure annotations are saved. Otherwise we would |
| // save the cached or remote copy without annotatios. |
| const requireResult = this.hasEnteredAnnotationMode_; |
| // TODO(dstockwell): Report an error to user if this fails. |
| const result = await this.currentController_.save(requireResult); |
| if (result == null) { |
| // The content controller handled the save internally. |
| return; |
| } |
| |
| // Make sure file extension is .pdf, avoids dangerous extensions. |
| let fileName = result.fileName; |
| if (!fileName.toLowerCase().endsWith('.pdf')) { |
| fileName = fileName + '.pdf'; |
| } |
| |
| chrome.fileSystem.chooseEntry( |
| {type: 'saveFile', suggestedName: fileName}, entry => { |
| if (chrome.runtime.lastError) { |
| if (chrome.runtime.lastError.message != 'User cancelled') { |
| console.log( |
| 'chrome.fileSystem.chooseEntry failed: ' + |
| chrome.runtime.lastError.message); |
| } |
| return; |
| } |
| entry.createWriter(writer => { |
| writer.write( |
| new Blob([result.dataToSave], {type: 'application/pdf'})); |
| // Unblock closing the window now that the user has saved |
| // successfully. |
| chrome.mimeHandlerPrivate.setShowBeforeUnloadDialog(false); |
| }); |
| }); |
| |
| // Saving in Annotation mode is destructive: crbug.com/919364 |
| this.exitAnnotationMode_(); |
| } |
| |
| /** @private */ |
| async print_() { |
| PDFMetrics.record(PDFMetrics.UserAction.PRINT); |
| await this.exitAnnotationMode_(); |
| this.currentController_.print(); |
| } |
| |
| /** |
| * Updates the toolbar's annotation available flag depending on current |
| * conditions. |
| * @private |
| */ |
| updateAnnotationAvailable_() { |
| if (!this.toolbar_) { |
| return; |
| } |
| let annotationAvailable = true; |
| if (this.viewport_.getClockwiseRotations() != 0) { |
| annotationAvailable = false; |
| } |
| if (this.hadPassword_) { |
| annotationAvailable = false; |
| } |
| if (!this.canSerializeDocument_) { |
| annotationAvailable = false; |
| } |
| this.toolbar_.annotationAvailable = annotationAvailable; |
| } |
| |
| /** @private */ |
| rotateClockwise_() { |
| PDFMetrics.record(PDFMetrics.UserAction.ROTATE); |
| this.viewport_.rotateClockwise(1); |
| this.currentController_.rotateClockwise(); |
| this.updateAnnotationAvailable_(); |
| } |
| |
| /** @private */ |
| rotateCounterclockwise_() { |
| PDFMetrics.record(PDFMetrics.UserAction.ROTATE); |
| this.viewport_.rotateClockwise(3); |
| this.currentController_.rotateCounterclockwise(); |
| this.updateAnnotationAvailable_(); |
| } |
| |
| /** |
| * @param {!CustomEvent<{canUndo: boolean, canRedo: boolean}>} e |
| * @private |
| */ |
| setAnnotationUndoState_(e) { |
| this.toolbar_.canUndoAnnotation = e.detail.canUndo; |
| this.toolbar_.canRedoAnnotation = e.detail.canRedo; |
| } |
| |
| /** @private */ |
| resetTrackers_() { |
| this.viewport_.resetTracker(); |
| if (this.tracker_) { |
| this.tracker_.removeAll(); |
| } |
| } |
| } |
| |
| /** |
| * The height of the toolbar along the top of the page. The document will be |
| * shifted down by this much in the viewport. |
| */ |
| PDFViewer.MATERIAL_TOOLBAR_HEIGHT = 56; |
| |
| /** |
| * Minimum height for the material toolbar to show (px). Should match the media |
| * query in index-material.css. If the window is smaller than this at load, |
| * leave no space for the toolbar. |
| */ |
| PDFViewer.TOOLBAR_WINDOW_MIN_HEIGHT = 250; |
| |
| /** |
| * The background color used for print preview (--google-grey-refresh-300). |
| */ |
| PDFViewer.PRINT_PREVIEW_BACKGROUND_COLOR = '0xFFDADCE0'; |
| |
| /** |
| * The background color used for print preview when dark mode is enabled |
| * (--google-grey-refresh-700). |
| */ |
| PDFViewer.PRINT_PREVIEW_DARK_BACKGROUND_COLOR = '0xFF5F6368'; |
| |
| /** |
| * The background color used for the regular viewer. |
| */ |
| PDFViewer.BACKGROUND_COLOR = '0xFF525659'; |
