Refactor print preview web ui

chrome/browser/resources/print_preview/data/ticket_items/fit_to_page.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.define('print_preview.ticket_items', function() {
+  'use strict';
+
+  /**
+   * Fit-to-page ticket item whose value is a {@code boolean} that indicates
+   * whether to scale the document to fit the page.
+   * @param {!print_preview.DocumentInfo} documentInfo Information about the
+   *     document to print.
+   * @param {!print_preview.DestinationStore} destinationStore Used to determine
+   *     whether fit to page should be available.
+   * @constructor
+   * @extends {print_preview.ticket_items.TicketItem}
+   */
+  function FitToPage(documentInfo, destinationStore) {
+    print_preview.ticket_items.TicketItem.call(this);
+
+    /**
+     * Information about the document to print.
+     * @type {!print_preview.DocumentInfo}
+     * @private
+     */
+    this.documentInfo_ = documentInfo;
+
+    /**
+     * Used to determine whether fit to page should be available.
+     * @type {!print_preview.DestinationStore}
+     * @private
+     */
+    this.destinationStore_ = destinationStore;
+  };
+
+  FitToPage.prototype = {
+    __proto__: print_preview.ticket_items.TicketItem.prototype,
+
+    /** @override */
+    wouldValueBeValid: function(value) {
+      return true;
+    },
+
+    /** @override */
+    isCapabilityAvailable: function() {
+      return !this.documentInfo_.isModifiable &&
+          (!this.destinationStore_.selectedDestination ||
+              this.destinationStore_.selectedDestination.id !=
+                  print_preview.Destination.GooglePromotedId.SAVE_AS_PDF);
+    },
+
+    /** @override */
+    getDefaultValueInternal: function() {
+      return true;
+    },
+
+    /** @override */
+    getCapabilityNotAvailableValueInternal: function() {
+      return this.destinationStore_.selectedDestination &&
+          this.destinationStore_.selectedDestination.id ==
+              print_preview.Destination.GooglePromotedId.SAVE_AS_PDF;
+    }
+  };
+
+  // Export
+  return {
+    FitToPage: FitToPage
+  };
+});