| // 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('options', function() { |
| var OptionsPage = options.OptionsPage; |
| |
| /** |
| * AlertOverlay class |
| * Encapsulated handling of a generic alert. |
| * @class |
| */ |
| function AlertOverlay() { |
| OptionsPage.call(this, 'alertOverlay', '', 'alertOverlay'); |
| } |
| |
| cr.addSingletonGetter(AlertOverlay); |
| |
| AlertOverlay.prototype = { |
| // Inherit AlertOverlay from OptionsPage. |
| __proto__: OptionsPage.prototype, |
| |
| /** |
| * Whether the page can be shown. Used to make sure the page is only |
| * shown via AlertOverlay.Show(), and not via the address bar. |
| * @private |
| */ |
| canShow_: false, |
| |
| /** |
| * Initialize the page. |
| */ |
| initializePage: function() { |
| // Call base class implementation to start preference initialization. |
| OptionsPage.prototype.initializePage.call(this); |
| |
| var self = this; |
| $('alertOverlayOk').onclick = function(event) { |
| self.handleOK_(); |
| }; |
| |
| $('alertOverlayCancel').onclick = function(event) { |
| self.handleCancel_(); |
| }; |
| }, |
| |
| /** @override */ |
| get nestingLevel() { |
| // AlertOverlay is special in that it is not tied to one page or overlay. |
| // Set the nesting level arbitrarily high so as to always be recognized as |
| // the top-most visible page. |
| return 99; |
| }, |
| |
| /** |
| * Handle the 'ok' button. Clear the overlay and call the ok callback if |
| * available. |
| * @private |
| */ |
| handleOK_: function() { |
| OptionsPage.closeOverlay(); |
| if (this.okCallback != undefined) { |
| this.okCallback.call(); |
| } |
| }, |
| |
| /** |
| * Handle the 'cancel' button. Clear the overlay and call the cancel |
| * callback if available. |
| * @private |
| */ |
| handleCancel_: function() { |
| OptionsPage.closeOverlay(); |
| if (this.cancelCallback != undefined) { |
| this.cancelCallback.call(); |
| } |
| }, |
| |
| /** |
| * The page is getting hidden. Don't let it be shown again. |
| */ |
| willHidePage: function() { |
| canShow_ = false; |
| }, |
| |
| /** @override */ |
| canShowPage: function() { |
| return this.canShow_; |
| }, |
| }; |
| |
| /** |
| * Show an alert overlay with the given message, button titles, and |
| * callbacks. |
| * @param {string} title The alert title to display to the user. |
| * @param {string} message The alert message to display to the user. |
| * @param {string} okTitle The title of the OK button. If undefined or empty, |
| * no button is shown. |
| * @param {string} cancelTitle The title of the cancel button. If undefined or |
| * empty, no button is shown. |
| * @param {function} okCallback A function to be called when the user presses |
| * the ok button. The alert window will be closed automatically. Can be |
| * undefined. |
| * @param {function} cancelCallback A function to be called when the user |
| * presses the cancel button. The alert window will be closed |
| * automatically. Can be undefined. |
| */ |
| AlertOverlay.show = function( |
| title, message, okTitle, cancelTitle, okCallback, cancelCallback) { |
| if (title != undefined) { |
| $('alertOverlayTitle').textContent = title; |
| $('alertOverlayTitle').style.display = 'block'; |
| } else { |
| $('alertOverlayTitle').style.display = 'none'; |
| } |
| |
| if (message != undefined) { |
| $('alertOverlayMessage').textContent = message; |
| $('alertOverlayMessage').style.display = 'block'; |
| } else { |
| $('alertOverlayMessage').style.display = 'none'; |
| } |
| |
| if (okTitle != undefined && okTitle != '') { |
| $('alertOverlayOk').textContent = okTitle; |
| $('alertOverlayOk').style.display = 'block'; |
| } else { |
| $('alertOverlayOk').style.display = 'none'; |
| } |
| |
| if (cancelTitle != undefined && cancelTitle != '') { |
| $('alertOverlayCancel').textContent = cancelTitle; |
| $('alertOverlayCancel').style.display = 'inline'; |
| } else { |
| $('alertOverlayCancel').style.display = 'none'; |
| } |
| |
| var alertOverlay = AlertOverlay.getInstance(); |
| alertOverlay.okCallback = okCallback; |
| alertOverlay.cancelCallback = cancelCallback; |
| alertOverlay.canShow_ = true; |
| |
| // Intentionally don't show the URL in the location bar as we don't want |
| // people trying to navigate here by hand. |
| OptionsPage.showPageByName('alertOverlay', false); |
| }; |
| |
| // Export |
| return { |
| AlertOverlay: AlertOverlay |
| }; |
| }); |