Power overlay in Settings.

chrome/browser/resources/options/chromeos/power_overlay.js

+// Copyright 2014 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('options', function() {
+  var Page = cr.ui.pageManager.Page;
+  var PageManager = cr.ui.pageManager.PageManager;
+
+  /**
+   * Encapsulated handling of the power overlay.
+   * @constructor
+   */
+  function PowerOverlay() {
+    Page.call(this, 'power-overlay',
+              loadTimeData.getString('powerOverlayTabTitle'),
+              'power-overlay');
+  }
+
+  cr.addSingletonGetter(PowerOverlay);
+
+  PowerOverlay.prototype = {
+    __proto__: Page.prototype,
+
+    /** @override */
+    initializePage: function() {
+      Page.prototype.initializePage.call(this);
+
+      $('power-confirm').onclick =
+          PageManager.closeOverlay.bind(PageManager);
+    },
+
+    setBatteryStatusText_: function(status) {
+      $('battery-status-value').textContent = status;
+    },
+  };
+
+  PowerOverlay.setBatteryStatusText = function(value) {
+    PowerOverlay.getInstance().setBatteryStatusText_(value);
+  };
+
+  // Export
+  return {
+    PowerOverlay: PowerOverlay
+  };
+});