Add media size capability to PDF printer.

chrome/browser/resources/print_preview/native_layer.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.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * An interface to the native Chromium printing system layer.
    * @constructor
    * @extends {cr.EventTarget}
    */
   function NativeLayer() {
     cr.EventTarget.call(this);
 
     // Bind global handlers
     global['setInitialSettings'] = this.onSetInitialSettings_.bind(this);
+    global['setPdfCapabilities'] = this.onSetPdfCapabilities_.bind(this);
     global['setUseCloudPrint'] = this.onSetUseCloudPrint_.bind(this);
     global['setPrinters'] = this.onSetPrinters_.bind(this);
     global['updateWithPrinterCapabilities'] =
         this.onUpdateWithPrinterCapabilities_.bind(this);
     global['failedToGetPrinterCapabilities'] =
         this.onFailedToGetPrinterCapabilities_.bind(this);
     global['failedToGetPrivetPrinterCapabilities'] =
       this.onFailedToGetPrivetPrinterCapabilities_.bind(this);
     global['reloadPrintersList'] = this.onReloadPrintersList_.bind(this);
     global['printToCloud'] = this.onPrintToCloud_.bind(this);
     global['fileSelectionCancelled'] =
         this.onFileSelectionCancelled_.bind(this);
     global['fileSelectionCompleted'] =
         this.onFileSelectionCompleted_.bind(this);
     global['printPreviewFailed'] = this.onPrintPreviewFailed_.bind(this);
     global['invalidPrinterSettings'] =
         this.onInvalidPrinterSettings_.bind(this);
     global['onDidGetDefaultPageLayout'] =
         this.onDidGetDefaultPageLayout_.bind(this);
     global['onDidGetPreviewPageCount'] =
         this.onDidGetPreviewPageCount_.bind(this);
     global['onDidPreviewPage'] = this.onDidPreviewPage_.bind(this);
     global['updatePrintPreview'] = this.onUpdatePrintPreview_.bind(this);
     global['printScalingDisabledForSourcePDF'] =
         this.onPrintScalingDisabledForSourcePDF_.bind(this);
     global['onDidGetAccessToken'] = this.onDidGetAccessToken_.bind(this);
     global['autoCancelForTesting'] = this.autoCancelForTesting_.bind(this);
     global['onPrivetPrinterChanged'] = this.onPrivetPrinterChanged_.bind(this);
     global['onPrivetCapabilitiesSet'] =
-      this.onPrivetCapabilitiesSet_.bind(this);
+        this.onPrivetCapabilitiesSet_.bind(this);
     global['onPrivetPrintFailed'] = this.onPrivetPrintFailed_.bind(this);
   };
 
   /**
    * Event types dispatched from the Chromium native layer.
    * @enum {string}
    * @const
    */
   NativeLayer.EventType = {
     ACCESS_TOKEN_READY: 'print_preview.NativeLayer.ACCESS_TOKEN_READY',
     CAPABILITIES_SET: 'print_preview.NativeLayer.CAPABILITIES_SET',
     CLOUD_PRINT_ENABLE: 'print_preview.NativeLayer.CLOUD_PRINT_ENABLE',
     DESTINATIONS_RELOAD: 'print_preview.NativeLayer.DESTINATIONS_RELOAD',
     DISABLE_SCALING: 'print_preview.NativeLayer.DISABLE_SCALING',
     FILE_SELECTION_CANCEL: 'print_preview.NativeLayer.FILE_SELECTION_CANCEL',
     FILE_SELECTION_COMPLETE:
         'print_preview.NativeLayer.FILE_SELECTION_COMPLETE',
     GET_CAPABILITIES_FAIL: 'print_preview.NativeLayer.GET_CAPABILITIES_FAIL',
     INITIAL_SETTINGS_SET: 'print_preview.NativeLayer.INITIAL_SETTINGS_SET',
     LOCAL_DESTINATIONS_SET: 'print_preview.NativeLayer.LOCAL_DESTINATIONS_SET',
     PAGE_COUNT_READY: 'print_preview.NativeLayer.PAGE_COUNT_READY',
     PAGE_LAYOUT_READY: 'print_preview.NativeLayer.PAGE_LAYOUT_READY',
     PAGE_PREVIEW_READY: 'print_preview.NativeLayer.PAGE_PREVIEW_READY',
+    PDF_CAPABILITIES_READY: 'print_preview.NativeLayer.PDF_CAPABILITIES_READY',
     PREVIEW_GENERATION_DONE:
         'print_preview.NativeLayer.PREVIEW_GENERATION_DONE',
     PREVIEW_GENERATION_FAIL:
         'print_preview.NativeLayer.PREVIEW_GENERATION_FAIL',
     PRINT_TO_CLOUD: 'print_preview.NativeLayer.PRINT_TO_CLOUD',
     SETTINGS_INVALID: 'print_preview.NativeLayer.SETTINGS_INVALID',
     PRIVET_PRINTER_CHANGED: 'print_preview.NativeLayer.PRIVET_PRINTER_CHANGED',
     PRIVET_CAPABILITIES_SET:
         'print_preview.NativeLayer.PRIVET_CAPABILITIES_SET',
     PRIVET_PRINT_FAILED: 'print_preview.NativeLayer.PRIVET_PRINT_FAILED'
@@ skipping 36 matching lines @@
      */
     startGetAccessToken: function(authType) {
       chrome.send('getAccessToken', [authType]);
     },
 
     /** Gets the initial settings to initialize the print preview with. */
     startGetInitialSettings: function() {
       chrome.send('getInitialSettings');
     },
 
+    /** Requests PDF printer capabilities, such as media size. */
+    startGetPdfCapabilities: function() {
+      chrome.send('getPdfCapabilities');
+    },
+
     /**
      * Requests the system's local print destinations. A LOCAL_DESTINATIONS_SET
      * event will be dispatched in response.
      */
     startGetLocalDestinations: function() {
       chrome.send('getPrinters');
     },
 
     /**
      * Requests the network's privet print destinations. A number of
@@ skipping 261 matching lines @@
           initialSettings['printerName'] || null,
           initialSettings['appState'] || null);
 
       var initialSettingsSetEvent = new Event(
           NativeLayer.EventType.INITIAL_SETTINGS_SET);
       initialSettingsSetEvent.initialSettings = nativeInitialSettings;
       this.dispatchEvent(initialSettingsSetEvent);
     },
 
     /**
+     * @param {!Object} capabilities Object containing some of the PDF printer
+     *     capabilities, such as media size.
+     */
+    onSetPdfCapabilities_: function(capabilities) {
+      var event = new Event(NativeLayer.EventType.PDF_CAPABILITIES_READY);
+      event.capabilities = capabilities;
+      this.dispatchEvent(event);
+    },
+
+    /**
      * Turn on the integration of Cloud Print.
      * @param {string} cloudPrintURL The URL to use for cloud print servers.
      * @private
      */
     onSetUseCloudPrint_: function(cloudPrintURL) {
       var cloudPrintEnableEvent = new Event(
           NativeLayer.EventType.CLOUD_PRINT_ENABLE);
       cloudPrintEnableEvent.baseCloudPrintUrl = cloudPrintURL;
       this.dispatchEvent(cloudPrintEnableEvent);
     },
@@ skipping 432 matching lines @@
       return this.serializedAppStateStr_;
     }
   };
 
   // Export
   return {
     NativeInitialSettings: NativeInitialSettings,
     NativeLayer: NativeLayer
   };
 });