PrintPreview:[MAC] Added "Open PDF In Preview" option to open the pdf in native preview app.

chrome/browser/resources/print_preview/print_preview.js

 // Copyright (c) 2011 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.
 
 // require: cr/ui/print_preview_cloud.js
 
 var localStrings = new LocalStrings();
 
 // If useCloudPrint is true we attempt to connect to cloud print
 // and populate the list of printers with cloud print printers.
@@ skipping 65 matching lines @@
 var colorSettings;
 
 // @type {print_preview.PreviewArea} Holds information related to the preview
 //     area (on the right).
 var previewArea;
 
 // True if the user has click 'Advanced...' in order to open the system print
 // dialog.
 var showingSystemDialog = false;
 
+// True if the user has clicked 'Open PDF in Preview' option.
+var previewAppRequested = false;
+
 // The range of options in the printer dropdown controlled by cloud print.
 var firstCloudPrintOptionPos = 0;
 var lastCloudPrintOptionPos = firstCloudPrintOptionPos;
 
 // Store the current previewUid.
 var currentPreviewUid = '';
 
 // True if we need to generate draft preview data.
 var generateDraftData = true;
 
@@ skipping 48 matching lines @@
     $('cancel-button').focus();
     previewArea.displayErrorMessageWithButtonAndNotify(
         localStrings.getString('noPlugin'),
         localStrings.getString('launchNativeDialog'),
         launchNativePrintDialog);
     $('mainview').parentElement.removeChild($('dummy-viewer'));
     return;
   }
 
   $('system-dialog-link').addEventListener('click', onSystemDialogLinkClicked);
+  if (cr.isMac) {
+    $('open-pdf-in-preview-link').addEventListener(
+        'click', onOpenPdfInPreviewLinkClicked);
+  }
   $('mainview').parentElement.removeChild($('dummy-viewer'));
 
   $('printer-list').disabled = true;
 
   pageSettings = print_preview.PageSettings.getInstance();
   copiesSettings = print_preview.CopiesSettings.getInstance();
   layoutSettings = print_preview.LayoutSettings.getInstance();
   marginSettings = print_preview.MarginSettings.getInstance();
   headerFooterSettings = print_preview.HeaderFooterSettings.getInstance();
   colorSettings = print_preview.ColorSettings.getInstance();
@@ skipping 27 matching lines @@
 function disableInputElementsInSidebar() {
   var els = $('navbar-container').querySelectorAll('input, button, select');
   for (var i = 0; i < els.length; i++) {
     if (els[i] == printHeader.cancelButton)
       continue;
     els[i].disabled = true;
   }
 }
 
 /**
+ * Enables the input elements in the sidebar.
+ */
+function enableInputElementsInSidebar() {
+  var els = $('navbar-container').querySelectorAll('input, button, select');
+  for (var i = 0; i < els.length; i++)
+    els[i].disabled = false;
+}
+
+/**
  * Disables the controls in the sidebar, shows the throbber and instructs the
  * backend to open the native print dialog.
  */
 function onSystemDialogLinkClicked() {
   if (showingSystemDialog)
     return;
   showingSystemDialog = true;
   disableInputElementsInSidebar();
   printHeader.disableCancelButton();
   $('system-dialog-throbber').hidden = false;
   chrome.send('showSystemDialog');
 }
 
 /**
+ * Disables the controls in the sidebar, shows the throbber and instructs the
+ * backend to open the pdf in native preview app. This is only for Mac.
+ */
+function onOpenPdfInPreviewLinkClicked() {
+  if (previewAppRequested)
+    return;
+  previewAppRequested = true;
+  disableInputElementsInSidebar();
+  $('open-preview-app-throbber').hidden = false;
+  printHeader.disableCancelButton();
+  requestToPrintDocument();
+}
+
+/**
  * Similar to onSystemDialogLinkClicked(), but specific to the
  * 'Launch native print dialog' UI.
  */
 function launchNativePrintDialog() {
   if (showingSystemDialog)
     return;
   showingSystemDialog = true;
   previewArea.errorButton.disabled = true;
   printHeader.disableCancelButton();
   $('native-print-dialog-throbber').hidden = false;
   chrome.send('showSystemDialog');
 }
 
 /**
  * Gets the selected printer capabilities and updates the controls accordingly.
  */
 function updateControlsWithSelectedPrinterCapabilities() {
   var printerList = $('printer-list');
   var selectedIndex = printerList.selectedIndex;
   if (selectedIndex < 0)
     return;
+  if (cr.isMac)
+    $('open-pdf-in-preview-link').disabled = false;
+
   var skip_refresh = false;
   var selectedValue = printerList.options[selectedIndex].value;
   if (cloudprint.isCloudPrint(printerList.options[selectedIndex])) {
     cloudprint.updatePrinterCaps(printerList.options[selectedIndex],
                                  doUpdateCloudPrinterCapabilities);
     skip_refresh = true;
   } else if (selectedValue == SIGN_IN ||
              selectedValue == MANAGE_CLOUD_PRINTERS ||
              selectedValue == MANAGE_LOCAL_PRINTERS) {
     printerList.selectedIndex = lastSelectedPrinterIndex;
@@ skipping 208 matching lines @@
  * Asks the browser to print the preview PDF based on current print
  * settings. If the preview is still loading, printPendingFile() will get
  * called once the preview loads.
  */
 function requestToPrintDocument() {
   hasPendingPrintDocumentRequest = !isPrintReadyMetafileReady;
   var selectedPrinterName = getSelectedPrinterName();
   var printToPDF = selectedPrinterName == PRINT_TO_PDF;
   var printWithCloudPrint = selectedPrinterName == PRINT_WITH_CLOUD_PRINT;
   if (hasPendingPrintDocumentRequest) {
-    if (printToPDF) {
+    if (previewAppRequested) {
+      previewArea.showCustomMessage(
+          localStrings.getString('openingPDFInPreview'));
+    } else if (printToPDF) {
       sendPrintDocumentRequest();
     } else if (printWithCloudPrint) {
       previewArea.showCustomMessage(
           localStrings.getString('printWithCloudPrintWait'));
       disableInputElementsInSidebar();
     } else {
       isTabHidden = true;
       chrome.send('hidePreview');
     }
     return;
   }
 
-  if (printToPDF) {
+  if (printToPDF || previewAppRequested) {
     sendPrintDocumentRequest();
   } else {
     window.setTimeout(function() { sendPrintDocumentRequest(); }, 1000);
   }
 }
 
 /**
  * Sends a message to cancel the pending print request.
  */
 function cancelPendingPrintRequest() {
   if (isTabHidden)
     chrome.send('cancelPendingPrintRequest');
 }
 
 /**
  * Sends a message to initiate print workflow.
  */
 function sendPrintDocumentRequest() {
   var printerList = $('printer-list');
   var printer = printerList[printerList.selectedIndex];
   chrome.send('saveLastPrinter', [printer.value, cloudprint.getData(printer)]);
-  chrome.send('print', [JSON.stringify(getSettings()),
+
+  var settings = getSettings();
+  if (cr.isMac && previewAppRequested)
+    settings.OpenPDFInPreview = true;
+
+  chrome.send('print', [JSON.stringify(settings),
                         cloudprint.getPrintTicketJSON(printer)]);
 }
 
 /**
  * Loads the selected preview pages.
  */
 function loadSelectedPages() {
   pageSettings.updatePageSelection();
   var pageSet = pageSettings.previouslySelectedPages;
   var pageCount = pageSet.length;
@@ skipping 227 matching lines @@
       localStrings.getString('previewFailed'),
       localStrings.getString('launchNativeDialog'),
       launchNativePrintDialog);
 }
 
 /**
  * Display an error message when encountered invalid printer settings.
  * Called from PrintPreviewMessageHandler::OnInvalidPrinterSettings().
  */
 function invalidPrinterSettings() {
+  if (cr.isMac) {
+    if (previewAppRequested) {
+      $('open-preview-app-throbber').hidden = true;
+      previewArea.clearCustomMessageWithDots();
+      previewAppRequested = false;
+      hasPendingPrintDocumentRequest = false;
+      enableInputElementsInSidebar();
+    }
+    $('open-pdf-in-preview-link').disabled = true;
+  }
   previewArea.displayErrorMessageAndNotify(
       localStrings.getString('invalidPrinterSettings'));
 }
 
 /**
  * Called when the PDF plugin loads its document.
  */
 function onPDFLoad() {
   if (previewModifiable) {
     setPluginPreviewPageCount();
@@ skipping 337 matching lines @@
 <include src="copies_settings.js"/>
 <include src="header_footer_settings.js"/>
 <include src="layout_settings.js"/>
 <include src="color_settings.js"/>
 <include src="margin_settings.js"/>
 <include src="margin_textbox.js"/>
 <include src="margin_utils.js"/>
 <include src="margins_ui.js"/>
 <include src="margins_ui_pair.js"/>
 <include src="preview_area.js"/>