[Aura] Polish app list.

chrome/browser/resources/aura/app_list/app_list.js

 // Copyright (c) 2011 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.
 
 /**
  * @fileoverview App list UI.
  * For now, most of its logic is borrowed from ntp4.
  */
 
 // Use an anonymous function to enable strict mode just for this file (which
 // will be concatenated with other files when embedded in Chrome
 cr.define('appList', function() {
   'use strict';
 
   /**
    * AppsView instance.
    * @type {!Object|undefined}
    */
   var appsView;
 
   /**
    * Invoked at startup once the DOM is available to initialize the app.
    */
   function load() {
     appsView = new appList.AppsView();
+
+    document.addEventListener('click', onDocClick);
   }
 
   /**
+   * Document click event handler.
+   */
+  function onDocClick(e) {
+    // Close if click is on body, or not on app, paging dot or its children.
+    if (e.target == document.body ||
+        (!e.target.classList.contains('app') &&
+         !e.target.classList.contains('dot') &&
+         !(e.target.parent && e.target.parent.classList.contains('dot')))) {
+      chrome.send('close');
+    }
+  }
+
+  /**
    * Wrappers to forward the callback to corresponding PageListView member.
    */
   function appAdded(appData, opt_highlight) {
     appsView.appAdded(appData, opt_highlight);
   }
 
   function appRemoved(appData, isUninstall) {
     appsView.appRemoved(appData, isUninstall);
   }
 
   function appsPrefChangeCallback(data) {
     appsView.appsPrefChangedCallback(data);
   }
 
   function enterRearrangeMode() {
     appsView.enterRearrangeMode();
   }
 
   function getAppsCallback(data) {
     appsView.getAppsCallback(data);
+    chrome.send('onAppsLoaded');
   }
 
   function getAppsPageIndex(page) {
     return appsView.getAppsPageIndex(page);
   }
 
   function getCardSlider() {
     return appsView.cardSlider;
   }
 
@@ skipping 35 matching lines @@
 ntp4.appAdded = appList.appAdded;
 ntp4.appRemoved = appList.appRemoved;
 ntp4.enterRearrangeMode = appList.enterRearrangeMode;
 ntp4.getAppsPageIndex = appList.getAppsPageIndex;
 ntp4.getCardSlider = appList.getCardSlider;
 ntp4.leaveRearrangeMode = appList.leaveRearrangeMode;
 ntp4.saveAppPageName = appList.saveAppPageName;
 ntp4.setAppToBeHighlighted = appList.setAppToBeHighlighted;
 
 document.addEventListener('DOMContentLoaded', appList.load);