Add media size capability to PDF printer.

chrome/browser/resources/print_preview/data/destination_store.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';
 
   /**
    * A data store that stores destinations and dispatches events when the data
    * store changes.
@@ skipping 30 matching lines @@
     this.appState_ = appState;
 
     /**
      * Used to track metrics.
      * @type {!print_preview.AppState}
      * @private
      */
     this.metrics_ = metrics;
 
     /**
+     * Cached local PDF printer capabilities.
+     * @type {Object}
+     * @private
+     */
+    this.pdfCapabilities_ = DestinationStore.createPdfCapabilities_();
+
+    /**
      * Internal backing store for the data store.
      * @type {!Array.<!print_preview.Destination>}
      * @private
      */
     this.destinations_ = [];
 
     /**
      * Cache used for constant lookup of destinations by origin and id.
      * @type {object.<string, !print_preview.Destination>}
      * @private
@@ skipping 126 matching lines @@
 
   /**
    * Amount of time spent searching for privet destination, in milliseconds.
    * @type {number}
    * @const
    * @private
    */
   DestinationStore.PRIVET_SEARCH_DURATION_ = 2000;
 
   /**
-   * Creates a local PDF print destination.
-   * @return {!print_preview.Destination} Created print destination.
+   * Creates capabilities for local PDF printer destination.
+   * @param {Object=} opt_capabilitiesTemplate Some of the capabilities to fill
+   *     in the printer ones.
+   * @return {!Object} PDF printer capabilities.
    * @private
    */
-  DestinationStore.createLocalPdfPrintDestination_ = function() {
-    var dest = new print_preview.Destination(
-        print_preview.Destination.GooglePromotedId.SAVE_AS_PDF,
-        print_preview.Destination.Type.LOCAL,
-        print_preview.Destination.Origin.LOCAL,
-        localStrings.getString('printToPDF'),
-        false /*isRecent*/,
-        print_preview.Destination.ConnectionStatus.ONLINE);
-    dest.capabilities = {
+  DestinationStore.createPdfCapabilities_ = function(opt_capabilitiesTemplate) {
+    var capabilities = {
       version: '1.0',
       printer: {
         page_orientation: {
           option: [
             {type: 'AUTO', is_default: true},
             {type: 'PORTRAIT'},
             {type: 'LANDSCAPE'}
           ]
         },
         color: { option: [{type: 'STANDARD_COLOR', is_default: true}] }
       }
     };
-    return dest;
+    if (opt_capabilitiesTemplate) {
+      var mediaSize = opt_capabilitiesTemplate.printer.media_size;
+      var mediaDisplayNames = {
+        'ISO_A4': 'A4',
+        'ISO_A3': 'A3',
+        'NA_LETTER': 'Letter',
+        'NA_LEGAL': 'Legal',
+        'NA_LEDGER': 'Tabloid'
+      };
+      for (var i = 0, media; media = mediaSize.option[i]; i++) {
+        media.custom_display_name = mediaDisplayNames[media.name] || media.name;
+      }
+      capabilities.printer.media_size = mediaSize;
+    }
+    return capabilities;
   };
 
   DestinationStore.prototype = {
     __proto__: cr.EventTarget.prototype,
 
     /**
      * @param {string=} opt_account Account to filter destinations by. When
      *     omitted, all destinations are returned.
      * @return {!Array.<!print_preview.Destination>} List of destinations
      *     accessible by the {@code account}.
@@ skipping 391 matching lines @@
       }
     },
 
     /**
      * Binds handlers to events.
      * @private
      */
     addEventListeners_: function() {
       this.tracker_.add(
           this.nativeLayer_,
+          print_preview.NativeLayer.EventType.PDF_CAPABILITIES_READY,
+          this.onPdfCapabilitiesReady_.bind(this));
+      this.tracker_.add(
+          this.nativeLayer_,
           print_preview.NativeLayer.EventType.LOCAL_DESTINATIONS_SET,
           this.onLocalDestinationsSet_.bind(this));
       this.tracker_.add(
           this.nativeLayer_,
           print_preview.NativeLayer.EventType.CAPABILITIES_SET,
           this.onLocalDestinationCapabilitiesSet_.bind(this));
       this.tracker_.add(
           this.nativeLayer_,
           print_preview.NativeLayer.EventType.GET_CAPABILITIES_FAIL,
           this.onGetCapabilitiesFail_.bind(this));
       this.tracker_.add(
           this.nativeLayer_,
           print_preview.NativeLayer.EventType.DESTINATIONS_RELOAD,
           this.onDestinationsReload_.bind(this));
       this.tracker_.add(
           this.nativeLayer_,
           print_preview.NativeLayer.EventType.PRIVET_PRINTER_CHANGED,
           this.onPrivetPrinterAdded_.bind(this));
       this.tracker_.add(
           this.nativeLayer_,
           print_preview.NativeLayer.EventType.PRIVET_CAPABILITIES_SET,
           this.onPrivetCapabilitiesSet_.bind(this));
     },
 
     /**
+     * Creates a local PDF print destination.
+     * @return {!print_preview.Destination} Created print destination.
+     * @private
+     */
+    createLocalPdfPrintDestination_: function() {
+      var destination = new print_preview.Destination(
+          print_preview.Destination.GooglePromotedId.SAVE_AS_PDF,
+          print_preview.Destination.Type.LOCAL,
+          print_preview.Destination.Origin.LOCAL,
+          localStrings.getString('printToPDF'),
+          false /*isRecent*/,
+          print_preview.Destination.ConnectionStatus.ONLINE);
+      destination.capabilities = this.pdfCapabilities_;
+      return destination;
+    },
+
+    /**
      * Resets the state of the destination store to its initial state.
      * @private
      */
     reset_: function() {
       this.destinations_ = [];
       this.destinationMap_ = {};
       this.selectDestination(null);
       this.loadedCloudOrigins_ = {};
       this.hasLoadedAllLocalDestinations_ = false;
-      this.insertDestination_(
-          DestinationStore.createLocalPdfPrintDestination_());
+      this.insertDestination_(this.createLocalPdfPrintDestination_());
       this.resetAutoSelectTimeout_();
     },
 
     /**
      * Resets destination auto selection timeout.
      * @private
      */
     resetAutoSelectTimeout_: function() {
       this.cancelAutoSelectTimeout_();
       this.autoSelectTimeout_ =
           setTimeout(this.onAutoSelectFailed_.bind(this),
                      DestinationStore.AUTO_SELECT_TIMEOUT_);
     },
 
     /**
      * Cancels destination auto selection timeout.
      * @private
      */
     cancelAutoSelectTimeout_: function() {
       if (this.autoSelectTimeout_ != null) {
         clearTimeout(this.autoSelectTimeout_);
         this.autoSelectTimeout_ = null;
       }
     },
 
+    onPdfCapabilitiesReady_: function(event) {
+      this.pdfCapabilities_ =
+          DestinationStore.createPdfCapabilities_(event.capabilities);
+      if (this.destinations_[0] &&

[Vitaly Buka (NO REVIEWS), 2014/05/20 22:52:19]

Why do you need this if?

+          this.destinations_[0].id ==
+              print_preview.Destination.GooglePromotedId.SAVE_AS_PDF) {
+        var pdfDestination = this.destinations_[0];
+        pdfDestination.capabilities = this.pdfCapabilities_;
+        if (this.selectedDestination_ &&
+            this.selectedDestination_.id == pdfDestination.id) {
+          cr.dispatchSimpleEvent(this,
+                                 DestinationStore.EventType.
+                                     SELECTED_DESTINATION_CAPABILITIES_READY);
+        }
+      }
+    },
+
     /**
      * Called when the local destinations have been got from the native layer.
      * @param {Event} Contains the local destinations.
      * @private
      */
     onLocalDestinationsSet_: function(event) {
       var localDestinations = event.destinationInfos.map(function(destInfo) {
         return print_preview.LocalDestinationParser.parse(destInfo);
       });
       this.insertDestinations_(localDestinations);
@@ skipping 209 matching lines @@
       return id == this.appState_.selectedDestinationId &&
              origin == this.appState_.selectedDestinationOrigin;
     }
   };
 
   // Export
   return {
     DestinationStore: DestinationStore
   };
 });