extensions/renderer/resources/window_controls.js

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 //
   6 // <window-controls> shadow element implementation.
   7 //
   8
   9 var chrome = requireNative('chrome').GetChrome();
  10 var forEach = require('utils').forEach;
  11 var addTagWatcher = require('tagWatcher').addTagWatcher;
  12 var appWindow = require('app.window');
  13 var getHtmlTemplate =
  14   requireNative('app_window_natives').GetWindowControlsHtmlTemplate;
  15
  16 /**
  17  * @constructor
  18  */
  19 function WindowControls(node) {
  20   this.node_ = node;
  21   this.shadowRoot_ = this.createShadowRoot_(node);
  22   this.setupWindowControls_();
  23 }
  24
  25 /**
  26  * @private
  27  */
  28 WindowControls.prototype.template_element = null;
  29
  30 /**
  31  * @private
  32  */
  33 WindowControls.prototype.createShadowRoot_ = function(node) {
  34   // Initialize |template| from HTML template resource and cache result.
  35   var template = WindowControls.prototype.template_element;
  36   if (!template) {
  37     var element = document.createElement('div');
  38     element.innerHTML = getHtmlTemplate();
  39     WindowControls.prototype.template_element = element.firstChild;
  40     template = WindowControls.prototype.template_element;
  41   }
  42   // Create shadow root element with template clone as first child.
  43   var shadowRoot = node.createShadowRoot();
  44   shadowRoot.appendChild(template.content.cloneNode(true));
  45   return shadowRoot;
  46 }
  47
  48 /**
  49  * @private
  50  */
  51 WindowControls.prototype.setupWindowControls_ = function() {
  52   var self = this;
  53   this.shadowRoot_.querySelector("#close-control").addEventListener('click',
  54       function(e) {
  55         chrome.app.window.current().close();
  56       });
  57
  58   this.shadowRoot_.querySelector("#maximize-control").addEventListener('click',
  59       function(e) {
  60         self.maxRestore_();
  61       });
  62 }
  63
  64 /**
  65  * @private
  66  * Restore or maximize depending on current state
  67  */
  68 WindowControls.prototype.maxRestore_ = function() {
  69   if (chrome.app.window.current().isMaximized()) {
  70     chrome.app.window.current().restore();
  71   } else {
  72     chrome.app.window.current().maximize();
  73   }
  74 }
  75
  76 addTagWatcher('WINDOW-CONTROLS', function(addedNode) {
  77   new WindowControls(addedNode);
  78 });