Print Preview: Change getPrinters to cr.sendWithPromise

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.exportPath('print_preview');
 
 /**
  * @typedef {{selectSaveAsPdfDestination: boolean,
  *            layoutSettings.portrait: boolean,
  *            pageRange: string,
  *            headersAndFooters: boolean,
  *            backgroundColorsAndImages: boolean,
  *            margins: number}}
  * @see chrome/browser/printing/print_preview_pdf_generated_browsertest.cc
  */
 print_preview.PreviewSettings;
 
 /**
  * @typedef {{
+ *   deviceName: string,
+ *   printerName: string,
+ *   printerDescription: (string | undefined),
+ *   cupsEnterprisePrinter: (boolean | undefined),
+ *   printerOptions: (Object | undefined),
+ * }}
+ */
+print_preview.LocalDestinationInfo;
+
+/**
+ * @typedef {{
  *   printerId: string,
  *   success: boolean,
  *   capabilities: Object,
  * }}
 */
 print_preview.PrinterSetupResponse;
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * An interface to the native Chromium printing system layer.
    * @constructor
    */
   function NativeLayer() {
     // Bind global handlers
     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.failedToGetExtensionPrinterCapabilities =
         this.onFailedToGetExtensionPrinterCapabilities_.bind(this);
     global.reloadPrintersList = this.onReloadPrintersList_.bind(this);
     global.printToCloud = this.onPrintToCloud_.bind(this);
@@ skipping 165 matching lines @@
                 initialSettings['shouldPrintSelectionOnly'] || false,
                 initialSettings['printerName'] || null,
                 initialSettings['appState'] || null,
                 initialSettings['defaultDestinationSelectionRules'] || null);
           });
     },
 
     /**
      * Requests the system's local print destinations. A LOCAL_DESTINATIONS_SET
      * event will be dispatched in response.
+     * @return {!Promise<!Array<print_preview.LocalDestinationInfo>>}
      */
-    startGetLocalDestinations: function() {
-      chrome.send('getPrinters');
+    getPrinters: function() {
+      return cr.sendWithPromise('getPrinters');
     },
 
     /**
      * Requests the network's privet print destinations. A number of
      * PRIVET_PRINTER_CHANGED events will be fired in response, followed by a
      * PRIVET_SEARCH_ENDED.
      */
     startGetPrivetDestinations: function() {
       chrome.send('getPrivetPrinters');
     },
@@ skipping 307 matching lines @@
      */
     onSetUseCloudPrint_: function(settings) {
       var cloudPrintEnableEvent = new Event(
           NativeLayer.EventType.CLOUD_PRINT_ENABLE);
       cloudPrintEnableEvent.baseCloudPrintUrl = settings['cloudPrintUrl'] || '';
       cloudPrintEnableEvent.appKioskMode = settings['appKioskMode'] || false;
       this.eventTarget_.dispatchEvent(cloudPrintEnableEvent);
     },
 
     /**
-     * Updates the print preview with local printers.
-     * Called from PrintPreviewHandler::SetupPrinterList().
-     * @param {Array} printers Array of printer info objects.
-     * @private
-     */
-    onSetPrinters_: function(printers) {
-      var localDestsSetEvent = new Event(
-          NativeLayer.EventType.LOCAL_DESTINATIONS_SET);
-      localDestsSetEvent.destinationInfos = printers;
-      this.eventTarget_.dispatchEvent(localDestsSetEvent);
-    },
-
-    /**
      * Called when native layer gets settings information for a requested local
      * destination.
      * @param {Object} settingsInfo printer setting information.
      * @private
      */
     onUpdateWithPrinterCapabilities_: function(settingsInfo) {
       assert(settingsInfo.capabilities,
           'Capabilities update without capabilites');
       var capsSetEvent = new Event(NativeLayer.EventType.CAPABILITIES_SET);
       capsSetEvent.settingsInfo = settingsInfo;
@@ skipping 540 matching lines @@
       return this.serializedDefaultDestinationSelectionRulesStr_;
     }
   };
 
   // Export
   return {
     NativeInitialSettings: NativeInitialSettings,
     NativeLayer: NativeLayer
   };
 });