Add a "Simplify Page" option to the print preview dialog

chrome/browser/resources/print_preview/data/ticket_items/print_friendly.js

Index: chrome/browser/resources/print_preview/data/ticket_items/print_friendly.js
diff --git a/chrome/browser/resources/print_preview/data/ticket_items/selection_only.js b/chrome/browser/resources/print_preview/data/ticket_items/print_friendly.js
similarity index 62%
copy from chrome/browser/resources/print_preview/data/ticket_items/selection_only.js
copy to chrome/browser/resources/print_preview/data/ticket_items/print_friendly.js
index f129a0f7bfb030796a6076ebec386e0740f544b6..8639d22a06d27fd4cc95e2f25a582054f1c0f48d 100644
--- a/chrome/browser/resources/print_preview/data/ticket_items/selection_only.js
+++ b/chrome/browser/resources/print_preview/data/ticket_items/print_friendly.js
@@ -1,4 +1,4 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 2015 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.
 
@@ -7,22 +7,28 @@ cr.define('print_preview.ticket_items', function() {
 
   /**
    * Ticket item whose value is a {@code boolean} that represents whether to
-   * print selection only.
+   * simplify the page before printing.
    * @param {!print_preview.DocumentInfo} documentInfo Information about the
    *     document to print.
+   * @param {!print_preview.SelectionOnly} selectionOnly Ticket definig whether
+   *     only selected content should be printed.
    * @constructor
    * @extends {print_preview.ticket_items.TicketItem}
    */
-  function SelectionOnly(documentInfo) {
+  function PrintFriendly(documentInfo, selectionOnly) {
     print_preview.ticket_items.TicketItem.call(
         this,
         null /*appState*/,
         null /*field*/,
         null /*destinationStore*/,
         documentInfo);
+
+    this.isAvailable_ = false;
+
+    this.selectionOnly_ = selectionOnly;
   };
 
-  SelectionOnly.prototype = {
+  PrintFriendly.prototype = {
     __proto__: print_preview.ticket_items.TicketItem.prototype,
 
     /** @override */
@@ -32,8 +38,7 @@ cr.define('print_preview.ticket_items', function() {
 
     /** @override */
     isCapabilityAvailable: function() {
-      return this.getDocumentInfoInternal().isModifiable &&
-             this.getDocumentInfoInternal().hasSelection;
+      return this.isAvailable_ && !this.selectionOnly_.isCapabilityAvailable();

[Aleksey Shlyapnikov, 2015/07/07 01:26:17]

Wouldn't the behavior be pretty random for the unsuspecting user? Any text
selected on the page will cause this option to disappear, even if user wants to
print the entire page and unaware of the selection.

     },
 
     /** @override */
@@ -44,11 +49,16 @@ cr.define('print_preview.ticket_items', function() {
     /** @override */
     getCapabilityNotAvailableValueInternal: function() {
       return false;
+    },
+
+    setIsCapabilityAvailable: function(isAvailable) {
+      this.isAvailable_ = isAvailable;
+      this.dispatchChangeEventInternal();

[Aleksey Shlyapnikov, 2015/07/07 01:26:17]

Dispatch this event only when the value was actually changed.

     }
   };
 
   // Export
   return {
-    SelectionOnly: SelectionOnly
+    PrintFriendly: PrintFriendly
   };
 });