chrome/browser/ui/views/auto_keep_alive.cc

   1 // Copyright 2014 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 #include "chrome/browser/ui/views/auto_keep_alive.h"
   6
   7 #include "chrome/browser/lifetime/application_lifetime.h"
   8 #include "chrome/browser/ui/host_desktop.h"
   9 #include "ui/aura/window.h"
  10 #include "ui/views/view_constants_aura.h"
  11
  12 AutoKeepAlive::AutoKeepAlive(gfx::NativeWindow window)
  13     : keep_alive_available_(false) {
  14   // In case of aura we want default to be keep alive not available for ash
  15   // because ash has keep alive set and we don't want additional keep alive
  16   // count. If there is a |window|, use its root window's kDesktopRootWindow
  17   // to test whether we are on desktop. Otherwise, use GetActiveDesktop().
  18   if (window) {
  19     gfx::NativeWindow native_window = window->GetRootWindow();
  20     if (native_window->GetProperty(views::kDesktopRootWindow))
  21       keep_alive_available_ = true;
  22   } else if (chrome::GetActiveDesktop() != chrome::HOST_DESKTOP_TYPE_ASH) {
  23     keep_alive_available_ = true;
  24   }
  25
  26   if (keep_alive_available_)
  27     chrome::IncrementKeepAliveCount();
  28 }
  29
  30 AutoKeepAlive::~AutoKeepAlive() {
  31   if (keep_alive_available_)
  32     chrome::DecrementKeepAliveCount();
  33 }