Requiem for client_screen.js

remoting/webapp/crd/js/ui_mode.js

 // 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.
 
 /**
  * @fileoverview
  * Functions related to controlling the modal UI state of the app. UI states
  * are expressed as HTML attributes with a dotted hierarchy. For example, the
  * string 'host.shared' will match any elements with an associated attribute
  * of 'host' or 'host.shared', showing those elements and hiding all others.
@@ skipping 105 matching lines @@
  *
  * @param {remoting.AppMode} mode The new modal state.
  */
 remoting.setMode = function(mode) {
   remoting.updateModalUi(mode, 'data-ui-mode');
   console.log('App mode: ' + mode);
   remoting.currentMode = mode;
   if (mode == remoting.AppMode.IN_SESSION) {
     document.removeEventListener('keydown', remoting.ConnectionStats.onKeydown,
                                  false);
-    if ('hidden' in document) {
-      document.addEventListener('visibilitychange',
-                                remoting.onVisibilityChanged, false);
-    } else {
-      document.addEventListener('webkitvisibilitychange',
-                                remoting.onVisibilityChanged, false);
-    }
   } else {
     document.addEventListener('keydown', remoting.ConnectionStats.onKeydown,
                               false);
-    document.removeEventListener('visibilitychange',
-                                 remoting.onVisibilityChanged, false);
-    document.removeEventListener('webkitvisibilitychange',
-                                 remoting.onVisibilityChanged, false);
     // TODO(jamiewalch): crbug.com/252796: Remove this once crbug.com/240772
     // is fixed.
     var scroller = document.getElementById('scroller');
     if (scroller) {
       scroller.classList.remove('no-horizontal-scroll');
       scroller.classList.remove('no-vertical-scroll');
     }
   }
 
   remoting.testEvents.raiseEvent(remoting.testEvents.Names.uiModeChanged, mode);
@@ skipping 145 matching lines @@
 }
 
 /**
  * @param {string} tag
  */
 remoting.showSetupProcessingMessage = function(tag) {
   var messageDiv = document.getElementById('host-setup-processing-message');
   l10n.localizeElementFromTag(messageDiv, tag);
   remoting.setMode(remoting.AppMode.HOST_SETUP_PROCESSING);
 }