[JS Changes] Support NumCopies print preset

chrome/test/data/webui/print_preview.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.
 
 /**
  * Test fixture for print preview WebUI testing.
  * @constructor
  * @extends {testing.Test}
  */
 function PrintPreviewWebUITest() {
@@ skipping 456 matching lines @@
 
 // When the print scaling is disabled for the source "PDF", we show the fit
 // to page option but the state is unchecked by default.
 TEST_F('PrintPreviewWebUITest', 'PrintScalingDisabledForPlugin', function() {
   this.initialSettings_.isDocumentModifiable_ = false;
   this.setInitialSettings();
   this.setLocalDestinations();
   this.setCapabilities(getCddTemplate("FooDevice"));
 
   // Indicate that the PDF does not support scaling by default.
-  cr.dispatchSimpleEvent(
-      this.nativeLayer_, print_preview.NativeLayer.EventType.DISABLE_SCALING);
+  var printPresetOptionsEvent = new Event(
+      print_preview.NativeLayer.EventType.PRINT_PRESET_OPTIONS);
+  printPresetOptionsEvent.optionsFromDocument = {disableScaling: true};
+  this.nativeLayer_.dispatchEvent(printPresetOptionsEvent);
 
   var otherOptions = $('other-options-settings');
   checkSectionVisible(otherOptions, true);
   checkElementDisplayed(
       otherOptions.querySelector('.fit-to-page-container'), true);
   expectFalse(
       otherOptions.querySelector('.fit-to-page-checkbox').checked);
 
   this.waitForAnimationToEnd('other-options-collapsible');
 });
 
+// When the number of copies print preset is set for source 'PDF', we update
+// copies value if capability is supported by printer.
+TEST_F('PrintPreviewWebUITest', 'CheckNumCopiesPrintPreset', function() {
+  this.initialSettings_.isDocumentModifiable_ = false;
+  this.setInitialSettings();
+  this.setLocalDestinations();
+  this.setCapabilities(getCddTemplate("FooDevice"));
+
+  // Indicate that the number of copies print preset is set for source PDF.
+  var printPresetOptions = {
+    disableScaling: true,
+    copies: 2
+  };
+  var printPresetOptionsEvent = new Event(
+      print_preview.NativeLayer.EventType.PRINT_PRESET_OPTIONS);
+  printPresetOptionsEvent.optionsFromDocument = printPresetOptions;
+  this.nativeLayer_.dispatchEvent(printPresetOptionsEvent);
+
+  checkSectionVisible($('copies-settings'), true);
+  expectEquals(
+      printPresetOptions.copies,
+      parseInt($('copies-settings').querySelector('.copies').value));
+
+  this.waitForAnimationToEnd('other-options-collapsible');
+});
+
 // Make sure that custom margins controls are properly set up.
 TEST_F('PrintPreviewWebUITest', 'CustomMarginsControlsCheck', function() {
   this.setInitialSettings();
   this.setLocalDestinations();
   this.setCapabilities(getCddTemplate("FooDevice"));
 
   printPreview.printTicketStore_.marginsType.updateValue(
       print_preview.ticket_items.MarginsType.Value.CUSTOM);
 
   ['left', 'top', 'right', 'bottom'].forEach(function(margin) {
@@ skipping 353 matching lines @@
   var printFailedMessageEl =
       previewAreaEl.getElementsByClassName('preview-area-print-failed')[0];
   expectEquals(true, printFailedMessageEl.hidden);
 
   var customMessageEl =
       previewAreaEl.getElementsByClassName('preview-area-custom-message')[0];
   expectEquals(false, customMessageEl.hidden);
 
   testDone();
 });