Remove in-process PDF related code from print preview.

chrome/browser/resources/print_preview/previewarea/preview_area.js

 // Copyright (c) 2012 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.
 
 /**
  * @typedef {{accessibility: Function,
  *            documentLoadComplete: Function,
  *            getHeight: Function,
  *            getHorizontalScrollbarThickness: Function,
  *            getPageLocationNormalized: Function,
@@ skipping 173 matching lines @@
     PREVIEW_GENERATION_IN_PROGRESS:
         'print_preview.PreviewArea.PREVIEW_GENERATION_IN_PROGRESS'
   };
 
   /**
    * CSS classes used by the preview area.
    * @enum {string}
    * @private
    */
   PreviewArea.Classes_ = {
-    COMPATIBILITY_OBJECT: 'preview-area-compatibility-object',
     OUT_OF_PROCESS_COMPATIBILITY_OBJECT:
         'preview-area-compatibility-object-out-of-process',
     CUSTOM_MESSAGE_TEXT: 'preview-area-custom-message-text',
     MESSAGE: 'preview-area-message',
     INVISIBLE: 'invisible',
     OPEN_SYSTEM_DIALOG_BUTTON: 'preview-area-open-system-dialog-button',
     OPEN_SYSTEM_DIALOG_BUTTON_THROBBER:
         'preview-area-open-system-dialog-button-throbber',
     OVERLAY: 'preview-area-overlay-layer',
     MARGIN_CONTROL: 'margin-control',
     PREVIEW_AREA: 'preview-area-plugin-wrapper'
   };
 
   /**
    * Enumeration of IDs shown in the preview area.
    * @enum {string}
    * @private
    */
   PreviewArea.MessageId_ = {
     CUSTOM: 'custom',
     LOADING: 'loading',
     PREVIEW_FAILED: 'preview-failed'
   };
 
   /**
-   * Enumeration of PDF plugin types for print preview.
-   * @enum {string}
-   * @private
-   */
-  PreviewArea.PluginType_ = {
-    // TODO(raymes): Remove all references to the IN_PROCESS plugin once it is
-    // removed.
-    IN_PROCESS: 'in-process',
-    OUT_OF_PROCESS: 'out-of-process',
-    NONE: 'none'
-  };
-
-  /**
    * Maps message IDs to the CSS class that contains them.
    * @type {Object<print_preview.PreviewArea.MessageId_, string>}
    * @private
    */
   PreviewArea.MessageIdClassMap_ = {};
   PreviewArea.MessageIdClassMap_[PreviewArea.MessageId_.CUSTOM] =
       'preview-area-custom-message';
   PreviewArea.MessageIdClassMap_[PreviewArea.MessageId_.LOADING] =
       'preview-area-loading-message';
   PreviewArea.MessageIdClassMap_[PreviewArea.MessageId_.PREVIEW_FAILED] =
@@ skipping 134 matching lines @@
           this.onTicketChange_.bind(this));
       this.tracker.add(
           this.printTicketStore_.pageRange,
           print_preview.ticket_items.TicketItem.EventType.CHANGE,
           this.onTicketChange_.bind(this));
       this.tracker.add(
           this.printTicketStore_.selectionOnly,
           print_preview.ticket_items.TicketItem.EventType.CHANGE,
           this.onTicketChange_.bind(this));
 
-      this.pluginType_ = this.getPluginType_();
-      if (this.pluginType_ != PreviewArea.PluginType_.NONE) {
+      if (this.checkPluginCompatibility_()) {
         this.previewGenerator_ = new print_preview.PreviewGenerator(
             this.destinationStore_,
             this.printTicketStore_,
             this.nativeLayer_,
             this.documentInfo_);
         this.tracker.add(
             this.previewGenerator_,
             print_preview.PreviewGenerator.EventType.PREVIEW_START,
             this.onPreviewStart_.bind(this));
         this.tracker.add(
@@ skipping 28 matching lines @@
       this.marginControlContainer_.decorate(this.getElement());
       this.overlayEl_ = this.getElement().getElementsByClassName(
           PreviewArea.Classes_.OVERLAY)[0];
       this.openSystemDialogButton_ = this.getElement().getElementsByClassName(
           PreviewArea.Classes_.OPEN_SYSTEM_DIALOG_BUTTON)[0];
     },
 
     /**
      * Checks to see if a suitable plugin for rendering the preview exists. If
      * one does not exist, then an error message will be displayed.
-     * @return {string} A string constant indicating whether Chromium has a
-     *     plugin for rendering the preview.
-     *     PreviewArea.PluginType_.IN_PROCESS for an in-process plugin
-     *     PreviewArea.PluginType_.OUT_OF_PROCESS for an out-of-process plugin
-     *     PreviewArea.PluginType_.NONE if no plugin is available.
+     * @return {boolean} true if Chromium has a plugin for rendering the
+     *     the preview.
      * @private
      */
-    getPluginType_: function() {
-      // TODO(raymes): Remove the in-process check after we remove the
-      // in-process plugin. Change this function back to
-      // checkPluginCompatibility_().
-      /** @type {print_preview.PDFPlugin} */
-      var compatObj = this.getElement().getElementsByClassName(
-          PreviewArea.Classes_.COMPATIBILITY_OBJECT)[0];
-      var isCompatible =
-          compatObj.onload &&
-          compatObj.goToPage &&
-          compatObj.removePrintButton &&
-          compatObj.loadPreviewPage &&
-          compatObj.printPreviewPageCount &&
-          compatObj.resetPrintPreviewUrl &&
-          compatObj.onPluginSizeChanged &&
-          compatObj.onScroll &&
-          compatObj.pageXOffset &&
-          compatObj.pageYOffset &&
-          compatObj.setZoomLevel &&
-          compatObj.setPageNumbers &&
-          compatObj.setPageXOffset &&
-          compatObj.setPageYOffset &&
-          compatObj.getHorizontalScrollbarThickness &&
-          compatObj.getVerticalScrollbarThickness &&
-          compatObj.getPageLocationNormalized &&
-          compatObj.getHeight &&
-          compatObj.getWidth;
-      compatObj.parentElement.removeChild(compatObj);
-
+    checkPluginCompatibility_: function() {
       // TODO(raymes): It's harder to test compatibility of the out of process
       // plugin because it's asynchronous. We could do a better job at some
       // point.
       var oopCompatObj = this.getElement().getElementsByClassName(
           PreviewArea.Classes_.OUT_OF_PROCESS_COMPATIBILITY_OBJECT)[0];
       var isOOPCompatible = oopCompatObj.postMessage;
       oopCompatObj.parentElement.removeChild(oopCompatObj);
 
-      if (isCompatible)
-        return PreviewArea.PluginType_.IN_PROCESS;
-      if (isOOPCompatible)
-        return PreviewArea.PluginType_.OUT_OF_PROCESS;
-      return PreviewArea.PluginType_.NONE;
+      return isOOPCompatible;
     },
 
     /**
      * Shows a given message on the overlay.
      * @param {!print_preview.PreviewArea.MessageId_} messageId ID of the
      *     message to show.
      * @param {string=} opt_message Optional message to show that can be used
      *     by some message IDs.
      * @private
      */
@@ skipping 59 matching lines @@
      * Creates a preview plugin and adds it to the DOM.
      * @param {string} srcUrl Initial URL of the plugin.
      * @private
      */
     createPlugin_: function(srcUrl) {
       if (this.plugin_) {
         console.warn('Pdf preview plugin already created');
         return;
       }
 
-      if (this.pluginType_ == PreviewArea.PluginType_.IN_PROCESS) {
-        this.plugin_ = assertInstanceof(document.createElement('embed'),
-                                        HTMLEmbedElement);
-        this.plugin_.setAttribute(
-            'type', 'application/x-google-chrome-print-preview-pdf');
-        this.plugin_.setAttribute('src', srcUrl);
-      } else {
-        this.plugin_ = /** @type {print_preview.PDFPlugin} */(
-            PDFCreateOutOfProcessPlugin(srcUrl));
-        this.plugin_.setKeyEventCallback(this.keyEventCallback_);
-      }
+      this.plugin_ = /** @type {print_preview.PDFPlugin} */(
+          PDFCreateOutOfProcessPlugin(srcUrl));
+      this.plugin_.setKeyEventCallback(this.keyEventCallback_);
 
       this.plugin_.setAttribute('class', 'preview-area-plugin');
       this.plugin_.setAttribute('aria-live', 'polite');
       this.plugin_.setAttribute('aria-atomic', 'true');
       // NOTE: The plugin's 'id' field must be set to 'pdf-viewer' since
       // chrome/renderer/printing/print_web_view_helper.cc actually references
       // it.
       this.plugin_.setAttribute('id', 'pdf-viewer');
       this.getChildElement('.preview-area-plugin-wrapper').
           appendChild(/** @type {Node} */(this.plugin_));
 
 
-      if (this.pluginType_ == PreviewArea.PluginType_.OUT_OF_PROCESS) {
-        var pageNumbers =
-            this.printTicketStore_.pageRange.getPageNumberSet().asArray();
-        var grayscale = !this.printTicketStore_.color.getValue();
-        this.plugin_.setLoadCallback(this.onPluginLoad_.bind(this));
-        this.plugin_.setViewportChangedCallback(
-            this.onPreviewVisualStateChange_.bind(this));
-        this.plugin_.resetPrintPreviewMode(srcUrl, grayscale, pageNumbers,
-                                           this.documentInfo_.isModifiable);
-      } else {
-        global['onPreviewPluginLoad'] = this.onPluginLoad_.bind(this);
-        (/** @type {print_preview.PDFPlugin} */(this.plugin_)).
-            onload('onPreviewPluginLoad()');
-
-        global['onPreviewPluginVisualStateChange'] =
-            this.onPreviewVisualStateChange_.bind(this);
-        this.plugin_.onScroll('onPreviewPluginVisualStateChange()');
-        this.plugin_.onPluginSizeChanged('onPreviewPluginVisualStateChange()');
-
-        this.plugin_.removePrintButton();
-        this.plugin_.grayscale(!this.printTicketStore_.color.getValue());
-      }
+      var pageNumbers =
+          this.printTicketStore_.pageRange.getPageNumberSet().asArray();
+      var grayscale = !this.printTicketStore_.color.getValue();
+      this.plugin_.setLoadCallback(this.onPluginLoad_.bind(this));
+      this.plugin_.setViewportChangedCallback(
+          this.onPreviewVisualStateChange_.bind(this));
+      this.plugin_.resetPrintPreviewMode(srcUrl, grayscale, pageNumbers,
+                                         this.documentInfo_.isModifiable);
     },
 
     /**
      * Dispatches a PREVIEW_GENERATION_DONE event if all conditions are met.
      * @private
      */
     dispatchPreviewGenerationDoneIfReady_: function() {
       if (this.isDocumentReady_ && this.isPluginReloaded_) {
         cr.dispatchSimpleEvent(
             this, PreviewArea.EventType.PREVIEW_GENERATION_DONE);
@@ skipping 38 matching lines @@
      * Called when the preview generator begins loading the preview.
      * @param {Event} event Contains the URL to initialize the plugin to.
      * @private
      */
     onPreviewStart_: function(event) {
       this.isDocumentReady_ = false;
       this.isPluginReloaded_ = false;
       if (!this.plugin_) {
         this.createPlugin_(event.previewUrl);
       } else {
-        if (this.pluginType_ == PreviewArea.PluginType_.OUT_OF_PROCESS) {
-          var grayscale = !this.printTicketStore_.color.getValue();
-          var pageNumbers =
-              this.printTicketStore_.pageRange.getPageNumberSet().asArray();
-          var url = event.previewUrl;
-          this.plugin_.resetPrintPreviewMode(url, grayscale, pageNumbers,
-                                             this.documentInfo_.isModifiable);
-        } else if (this.pluginType_ == PreviewArea.PluginType_.IN_PROCESS) {
-          this.plugin_.goToPage('0');
-          this.plugin_.resetPrintPreviewUrl(event.previewUrl);
-          this.plugin_.reload();
-          this.plugin_.grayscale(!this.printTicketStore_.color.getValue());
-        }
+        var grayscale = !this.printTicketStore_.color.getValue();
+        var pageNumbers =
+            this.printTicketStore_.pageRange.getPageNumberSet().asArray();
+        var url = event.previewUrl;
+        this.plugin_.resetPrintPreviewMode(url, grayscale, pageNumbers,
+                                           this.documentInfo_.isModifiable);
       }
       cr.dispatchSimpleEvent(
           this, PreviewArea.EventType.PREVIEW_GENERATION_IN_PROGRESS);
     },
 
     /**
      * Called when a page preview has been generated. Updates the plugin with
      * the new page.
      * @param {Event} event Contains information about the page preview.
      * @private
@@ skipping 31 matching lines @@
      * plugin.reload(). Certain plugin state can only be set after the plugin
      * has loaded.
      * @private
      */
     onPluginLoad_: function() {
       if (this.loadingTimeout_) {
         clearTimeout(this.loadingTimeout_);
         this.loadingTimeout_ = null;
       }
 
-      if (this.pluginType_ == PreviewArea.PluginType_.IN_PROCESS) {
-        // Setting the plugin's page count can only be called after the plugin
-        // is loaded and the document must be modifiable.
-        if (this.documentInfo_.isModifiable) {
-          this.plugin_.printPreviewPageCount(
-              this.printTicketStore_.pageRange.getPageNumberSet().size);
-        }
-        this.plugin_.setPageNumbers(JSON.stringify(
-            this.printTicketStore_.pageRange.getPageNumberSet().asArray()));
-        if (this.zoomLevel_ != null && this.pageOffset_ != null) {
-          this.plugin_.setZoomLevel(this.zoomLevel_);
-          this.plugin_.setPageXOffset(this.pageOffset_.x);
-          this.plugin_.setPageYOffset(this.pageOffset_.y);
-        } else {
-          this.plugin_.fitToHeight();
-        }
-      }
       this.setOverlayVisible_(false);
       this.isPluginReloaded_ = true;
       this.dispatchPreviewGenerationDoneIfReady_();
     },
 
     /**
      * Called when the preview plugin's visual state has changed. This is a
      * consequence of scrolling or zooming the plugin. Updates the custom
      * margins component if shown.
      * @private
      */
     onPreviewVisualStateChange_: function(pageX,
                                           pageY,
                                           pageWidth,
                                           viewportWidth,
                                           viewportHeight) {
-      if (this.pluginType_ == PreviewArea.PluginType_.IN_PROCESS) {
-        if (this.isPluginReloaded_) {
-          this.zoomLevel_ = this.plugin_.getZoomLevel();
-          this.pageOffset_ = new print_preview.Coordinate2d(
-              this.plugin_.pageXOffset(), this.plugin_.pageYOffset());
-        }
-
-        var pageLocationNormalizedStr =
-            this.plugin_.getPageLocationNormalized();
-        if (!pageLocationNormalizedStr) {
-          return;
-        }
-        var normalized = pageLocationNormalizedStr.split(';');
-        var pluginWidth = this.plugin_.getWidth();
-        var pluginHeight = this.plugin_.getHeight();
-        var verticalScrollbarThickness =
-            this.plugin_.getVerticalScrollbarThickness();
-        var horizontalScrollbarThickness =
-            this.plugin_.getHorizontalScrollbarThickness();
-
-        var translationTransform = new print_preview.Coordinate2d(
-            parseFloat(normalized[0]) * pluginWidth,
-            parseFloat(normalized[1]) * pluginHeight);
-        this.marginControlContainer_.updateTranslationTransform(
-            translationTransform);
-        var pageWidthInPixels = parseFloat(normalized[2]) * pluginWidth;
-        this.marginControlContainer_.updateScaleTransform(
-            pageWidthInPixels / this.documentInfo_.pageSize.width);
-        this.marginControlContainer_.updateClippingMask(
-            new print_preview.Size(
-                pluginWidth - verticalScrollbarThickness,
-                pluginHeight - horizontalScrollbarThickness));
-      } else if (this.pluginType_ == PreviewArea.PluginType_.OUT_OF_PROCESS) {
-        this.marginControlContainer_.updateTranslationTransform(
-            new print_preview.Coordinate2d(pageX, pageY));
-        this.marginControlContainer_.updateScaleTransform(
-            pageWidth / this.documentInfo_.pageSize.width);
-        this.marginControlContainer_.updateClippingMask(
-            new print_preview.Size(viewportWidth, viewportHeight));
-      }
+      this.marginControlContainer_.updateTranslationTransform(
+          new print_preview.Coordinate2d(pageX, pageY));
+      this.marginControlContainer_.updateScaleTransform(
+          pageWidth / this.documentInfo_.pageSize.width);
+      this.marginControlContainer_.updateClippingMask(
+          new print_preview.Size(viewportWidth, viewportHeight));
     },
 
     /**
      * Called when dragging margins starts or stops.
      * @param {boolean} isDragging True if the margin is currently being dragged
      *     and false otherwise.
      */
     onMarginDragChanged_: function(isDragging) {
       if (!this.plugin_)
         return;
 
       // When hovering over the plugin (which may be in a separate iframe)
       // pointer events will be sent to the frame. When dragging the margins,
       // we don't want this to happen as it can cause the margin to stop
       // being draggable.
       this.plugin_.style.pointerEvents = isDragging ? 'none' : 'auto';
     }
   };
 
   // Export
   return {
     PreviewArea: PreviewArea
   };
 });