Initial accounts options page.

chrome/browser/resources/options/chromeos_accounts_user_list.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.accounts', function() {
+  const List = cr.ui.List;
+  const ListItem = cr.ui.ListItem;
+  const ArrayDataModel = cr.ui.ArrayDataModel;
+
+  /**
+   * Creates a new user list.
+   * @param {Object=} opt_propertyBag Optional properties.
+   * @constructor
+   * @extends {cr.ui.List}
+   */
+  var UserList = cr.ui.define('list');
+
+  UserList.prototype = {
+    __proto__: List.prototype,
+
+    pref: 'cros.accounts.users',
+
+    /** @inheritDoc */
+    decorate: function() {
+      List.prototype.decorate.call(this);
+
+      // HACK(arv): http://crbug.com/40902
+      window.addEventListener('resize', cr.bind(this.redraw, this));
+
+      var self = this;
+      if (!this.boundHandleChange_) {
+        this.boundHandleChange_ =
+            cr.bind(this.handleChange_, this);
+      }
+
+      // Listens to pref changes.
+      Preferences.getInstance().addEventListener(this.pref,
+          function(event) {
+            self.load_(event.value);
+          });
+
+      // Listens to list selection change.
+      this.addEventListener('change', this.boundHandleChange_);
+    },
+
+    createItem: function(user) {
+      return new ListItem({label: user.email});
+    },
+
+    /**
+     * Adds given user to model and update backend.
+     * @param {Object} user A user to be added to user list.
+     */
+    addUser: function(user) {
+      var dataModel = this.dataModel;
+      dataModel.splice(dataModel.length, 0, user);
+
+      this.updateBackend_();
+    },
+
+    /**
+     * Removes currently selected user from model and update backend.
+     */
+    removeSelectedUser: function() {
+      var sm = this.selectionModel;
+      var dataModel = this.dataModel;
+
+      var newUsers = [];
+      for (var i = 0; i < dataModel.length; ++i) {
+        if (!sm.getIndexSelected(i)) {
+          newUsers.push(dataModel.item(i));
+        }
+      }
+      this.load_(newUsers);
+
+      this.updateBackend_();
+    },
+
+    /**
+     * Loads given user list.
+     * @param {Array} users An array of user object.
+     */
+    load_: function(users) {
+      this.dataModel = new ArrayDataModel(users);
+    },
+
+    /**
+     * Updates backend.
+     */
+    updateBackend_: function() {
+      Preferences.setObjectPref(this.pref, this.dataModel.slice());
+    },
+
+    /**
+     * Handles selection change.
+     */
+    handleChange_: function(e) {
+      $('removeUserButton').disabled = this.selectionModel.selectedIndex == -1;
+    }
+  };
+
+  return {
+    UserList: UserList
+  };
+});