Print Preview: change getPreview 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,
@@ skipping 69 matching lines @@
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * An interface to the native Chromium printing system layer.
    * @constructor
    */
   function NativeLayer() {
     // Bind global handlers
     global.reloadPrintersList = this.onReloadPrintersList_.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.onEnableManipulateSettingsForTest =
         this.onEnableManipulateSettingsForTest_.bind(this);
     global.printPresetOptionsFromDocument =
         this.onPrintPresetOptionsFromDocument_.bind(this);
 
     /** @private {!cr.EventTarget} */
     this.eventTarget_ = new cr.EventTarget();
   }
 
   /** @private {?print_preview.NativeLayer} */
@@ skipping 216 matching lines @@
      *   - PAGE_LAYOUT_READY
      *   - PAGE_PREVIEW_READY
      *   - PREVIEW_GENERATION_DONE
      *   - PREVIEW_GENERATION_FAIL
      * @param {!print_preview.Destination} destination Destination to print to.
      * @param {!print_preview.PrintTicketStore} printTicketStore Used to get the
      *     state of the print ticket.
      * @param {!print_preview.DocumentInfo} documentInfo Document data model.
      * @param {boolean} generateDraft Tell the renderer to re-render.
      * @param {number} requestId ID of the preview request.
+     * @return {!Promise<number>} Promise that resolves with the unique ID of
+     *     the preview UI when the preview has been generated.
      */
-    startGetPreview: function(
+    getPreview: function(
         destination, printTicketStore, documentInfo, generateDraft, requestId) {
       assert(
           printTicketStore.isTicketValidForPreview(),
           'Trying to generate preview when ticket is not valid');
 
       var ticket = {
         'pageRange': printTicketStore.pageRange.getDocumentPageRanges(),
         'mediaSize': printTicketStore.mediaSize.getValue(),
         'landscape': printTicketStore.landscape.getValue(),
         'color': this.getNativeColorModel_(destination, printTicketStore.color),
@@ skipping 42 matching lines @@
         var orientationEnum =
             print_preview.ticket_items.CustomMarginsOrientation;
         ticket['marginsCustom'] = {
           'marginTop': customMargins.get(orientationEnum.TOP),
           'marginRight': customMargins.get(orientationEnum.RIGHT),
           'marginBottom': customMargins.get(orientationEnum.BOTTOM),
           'marginLeft': customMargins.get(orientationEnum.LEFT)
         };
       }
 
-      chrome.send('getPreview', [
-        JSON.stringify(ticket), requestId > 0 ? documentInfo.pageCount : -1
-      ]);
+      return cr.sendWithPromise(
+          'getPreview', JSON.stringify(ticket),
+          requestId > 0 ? documentInfo.pageCount : -1);
     },
 
     /**
      * Requests that the document be printed.
      * @param {!print_preview.Destination} destination Destination to print to.
      * @param {!print_preview.PrintTicketStore} printTicketStore Used to get the
      *     state of the print ticket.
      * @param {cloudprint.CloudPrintInterface} cloudPrintInterface Interface
      *     to Google Cloud Print.
      * @param {!print_preview.DocumentInfo} documentInfo Document data model.
@@ skipping 142 matching lines @@
       chrome.send('forceOpenNewTab', [url]);
     },
 
     /** Reloads the printer list. */
     onReloadPrintersList_: function() {
       cr.dispatchSimpleEvent(
           this.eventTarget_, NativeLayer.EventType.DESTINATIONS_RELOAD);
     },
 
     /**
-     * Display an error message when print preview fails.
-     * Called from PrintPreviewMessageHandler::OnPrintPreviewFailed().
-     * @private
-     */
-    onPrintPreviewFailed_: function() {
-      cr.dispatchSimpleEvent(
-          this.eventTarget_, NativeLayer.EventType.PREVIEW_GENERATION_FAIL);
-    },
-
-    /**
-     * Display an error message when encountered invalid printer settings.
-     * Called from PrintPreviewMessageHandler::OnInvalidPrinterSettings().
-     * @private
-     */
-    onInvalidPrinterSettings_: function() {
-      cr.dispatchSimpleEvent(
-          this.eventTarget_, NativeLayer.EventType.SETTINGS_INVALID);
-    },
-
-    /**
      * @param {{contentWidth: number, contentHeight: number, marginLeft: number,
      *          marginRight: number, marginTop: number, marginBottom: number,
      *          printableAreaX: number, printableAreaY: number,
      *          printableAreaWidth: number, printableAreaHeight: number}}
      *          pageLayout Specifies default page layout details in points.
      * @param {boolean} hasCustomPageSizeStyle Indicates whether the previewed
      *     document has a custom page size style.
      * @private
      */
     onDidGetDefaultPageLayout_: function(pageLayout, hasCustomPageSizeStyle) {
@@ skipping 37 matching lines @@
     onDidPreviewPage_: function(pageNumber, previewUid, previewResponseId) {
       var pagePreviewGenEvent =
           new Event(NativeLayer.EventType.PAGE_PREVIEW_READY);
       pagePreviewGenEvent.pageIndex = pageNumber;
       pagePreviewGenEvent.previewUid = previewUid;
       pagePreviewGenEvent.previewResponseId = previewResponseId;
       this.eventTarget_.dispatchEvent(pagePreviewGenEvent);
     },
 
     /**
-     * Update the print preview when new preview data is available.
-     * Create the PDF plugin as needed.
-     * Called from PrintPreviewUI::PreviewDataIsAvailable().
-     * @param {number} previewUid Preview unique identifier.
-     * @param {number} previewResponseId The preview request id that resulted in
-     *     this response.
-     * @private
-     */
-    onUpdatePrintPreview_: function(previewUid, previewResponseId) {
-      var previewGenDoneEvent =
-          new Event(NativeLayer.EventType.PREVIEW_GENERATION_DONE);
-      previewGenDoneEvent.previewUid = previewUid;
-      previewGenDoneEvent.previewResponseId = previewResponseId;
-      this.eventTarget_.dispatchEvent(previewGenDoneEvent);
-    },
-
-    /**
      * Updates print preset options from source PDF document.
      * Called from PrintPreviewUI::OnSetOptionsFromDocument().
      * @param {{disableScaling: boolean, copies: number,
      *          duplex: number}} options Specifies
      *     printing options according to source document presets.
      * @private
      */
     onPrintPresetOptionsFromDocument_: function(options) {
       var printPresetOptionsEvent =
           new Event(NativeLayer.EventType.PRINT_PRESET_OPTIONS);
@@ skipping 217 matching lines @@
       return this.serializedDefaultDestinationSelectionRulesStr_;
     }
   };
 
   // Export
   return {
     NativeInitialSettings: NativeInitialSettings,
     NativeLayer: NativeLayer
   };
 });