DOMUI Prefs: Add a subpage for startup page management.

chrome/browser/resources/options/startup_page_manager.js

+// Copyright (c) 2010 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() {
+  const OptionsPage = options.OptionsPage;
+  const ArrayDataModel = cr.ui.ArrayDataModel;
+  const ListSelectionModel = cr.ui.ListSelectionModel;
+
+  /**
+   * Encapsulated handling of startup page management page.
+   * @constructor
+   */
+  function StartupPageManager() {
+    this.activeNavTab = null;
+    OptionsPage.call(this, 'startupPages',
+                     templateData.StartupPageManagerPage,
+                     'startupPageManagerPage');
+  }
+
+  cr.addSingletonGetter(StartupPageManager);
+
+  StartupPageManager.prototype = {
+    __proto__: OptionsPage.prototype,
+    list_: null,
+
+    initializePage: function() {
+      OptionsPage.prototype.initializePage.call(this);
+
+      var list = $('startupPagesFullList');
+      options.browser_options.StartupPageList.decorate(list);
+      list.autoExpands = true;
+      list.selectionModel = new ListSelectionModel;
+
+      list.selectionModel.addEventListener(
+          'change', this.updateRemoveButtonState_.bind(this));
+
+      // Wire up controls.
+      $('startupAddButton').onclick = function(event) {
+        OptionsPage.showOverlay('addStartupPageOverlay');
+      };
+      $('startupRemoveButton').onclick =
+          this.removeSelectedStartupPages_.bind(this);
+
+      // Remove Windows-style accelerators from button labels.
+      // TODO(stuartmorgan): Remove this once the strings are updated.
+      $('startupAddButton').textContent =
+          localStrings.getStringWithoutAccelerator('startupAddButton');
+      $('startupRemoveButton').textContent =
+          localStrings.getStringWithoutAccelerator('startupRemoveButton');
+    },
+
+    /**
+     * Updates the startup pages list with the given entries.
+     * @private

[csilv, 2010/12/08 23:46:12]

nit, move @private line to bottom of comment block.  not explicitly listed in
guideline, but follows the pattern.

[stuartmorgan, 2010/12/09 19:30:08]

Done.

+     * @param {Array} pages List of startup pages.
+     */
+    updateStartupPages_: function(pages) {
+      $('startupPagesFullList').dataModel = new ArrayDataModel(pages);
+      this.updateRemoveButtonState_();
+    },
+
+    /**
+     * Sets the enabled state of the startup page Remove button based on
+     * the current selection in the startup pages list.
+     * @private
+     */
+    updateRemoveButtonState_: function() {
+      $('startupRemoveButton').disabled =
+          $('startupPagesFullList').selectionModel.selectedIndex == -1;
+    },
+
+    /**
+     * Removes the selected startup pages.
+     * @private
+     */
+    removeSelectedStartupPages_: function() {
+      var selections =
+          $('startupPagesFullList').selectionModel.selectedIndexes.map(String);
+      chrome.send('removeStartupPages', selections);
+    },
+  };
+
+  StartupPageManager.updateStartupPages = function(pages) {
+    StartupPageManager.getInstance().updateStartupPages_(pages);
+  };
+
+  // Export
+  return {
+    StartupPageManager: StartupPageManager
+  };
+
+});
+