Refactor print preview web ui

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

Index: chrome/browser/resources/print_preview/data/ticket_items/duplex.js
diff --git a/chrome/browser/resources/print_preview/data/ticket_items/duplex.js b/chrome/browser/resources/print_preview/data/ticket_items/duplex.js
new file mode 100644
index 0000000000000000000000000000000000000000..c4829827a8ec3d1aebb57915ba7f82d963ca068b
--- /dev/null
+++ b/chrome/browser/resources/print_preview/data/ticket_items/duplex.js
@@ -0,0 +1,57 @@
+// 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';
+
+  /**
+   * Duplex ticket item whose value is a {@code boolean} that indicates whether
+   * the document should be duplex printed.
+   * @param {!print_preview.CapabilitiesHolder} capabilitiesHolder Capabilities
+   *     holder used to determine the default duplex value and if duplexing
+   *     is available.
+   * @constructor
+   * @extends {print_preview.ticket_items.TicketItem}
+   */
+  function Duplex(capabilitiesHolder) {
+    print_preview.ticket_items.TicketItem.call(this);
+
+    /**
+     * Capabilities holder used to determine the default duplex value and if
+     * duplexing is available.
+     * @type {!print_preview.CapabilitiesHolder}
+     * @private
+     */
+    this.capabilitiesHolder_ = capabilitiesHolder;
+  };
+
+  Duplex.prototype = {
+    __proto__: print_preview.ticket_items.TicketItem.prototype,
+
+    /** @override */
+    wouldValueBeValid: function(value) {
+      return true;
+    },
+
+    /** @override */
+    isCapabilityAvailable: function() {
+      return this.capabilitiesHolder_.get().hasDuplexCapability;
+    },
+
+    /** @override */
+    getDefaultValueInternal: function() {
+      return this.capabilitiesHolder_.get().defaultIsDuplexEnabled;
+    },
+
+    /** @override */
+    getCapabilityNotAvailableValueInternal: function() {
+      return false;
+    }
+  };
+
+  // Export
+  return {
+    Duplex: Duplex
+  };
+});