chrome/browser/ui/host_desktop.cc

   1 // Copyright 2012 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/host_desktop.h"
   6
   7 #if defined(OS_WIN)
   8 #include <windows.h>
   9 #endif
  10
  11 #include "ash/shell.h"
  12 #include "chrome/browser/ui/ash/ash_util.h"
  13 #include "chrome/browser/ui/aura/active_desktop_monitor.h"
  14 #include "chrome/browser/ui/browser_list_impl.h"
  15
  16 namespace chrome {
  17
  18 namespace {
  19
  20 bool g_force_ = false;
  21 HostDesktopType g_force_type_ = HOST_DESKTOP_TYPE_COUNT;
  22
  23 }  // namespace
  24
  25 ScopedForceDesktopType::ScopedForceDesktopType(HostDesktopType type)
  26     : previous_type_(g_force_type_),
  27       previous_force_(g_force_) {
  28   g_force_type_ = type;
  29   g_force_ = true;
  30 }
  31
  32 ScopedForceDesktopType::~ScopedForceDesktopType() {
  33   g_force_type_ = previous_type_;
  34   g_force_ = previous_force_;
  35 }
  36
  37 HostDesktopType GetHostDesktopTypeForNativeView(gfx::NativeView native_view) {
  38   if (g_force_)
  39     return g_force_type_;
  40 #if defined(USE_ASH)
  41   return IsNativeViewInAsh(native_view) ?
  42       HOST_DESKTOP_TYPE_ASH :
  43       HOST_DESKTOP_TYPE_NATIVE;
  44 #else
  45   return HOST_DESKTOP_TYPE_NATIVE;
  46 #endif
  47 }
  48
  49 HostDesktopType GetHostDesktopTypeForNativeWindow(
  50     gfx::NativeWindow native_window) {
  51   if (g_force_)
  52     return g_force_type_;
  53 #if defined(USE_ASH)
  54   return IsNativeWindowInAsh(native_window) ?
  55       HOST_DESKTOP_TYPE_ASH :
  56       HOST_DESKTOP_TYPE_NATIVE;
  57 #else
  58   return HOST_DESKTOP_TYPE_NATIVE;
  59 #endif
  60 }
  61
  62 HostDesktopType GetHostDesktopTypeForBrowser(const Browser* browser) {
  63   if (g_force_)
  64     return g_force_type_;
  65   for (HostDesktopType type = HOST_DESKTOP_TYPE_FIRST;
  66       type < HOST_DESKTOP_TYPE_COUNT;
  67       type = static_cast<HostDesktopType>(type + 1)) {
  68     BrowserListImpl::const_iterator begin =
  69         BrowserListImpl::GetInstance(type)->begin();
  70     BrowserListImpl::const_iterator end =
  71         BrowserListImpl::GetInstance(type)->end();
  72     if (std::find(begin, end, browser) != end)
  73       return type;
  74   }
  75   return HOST_DESKTOP_TYPE_NATIVE;
  76 }
  77
  78 HostDesktopType GetActiveDesktop() {
  79 #if defined(USE_ASH) && !defined(OS_CHROMEOS)
  80   // The Ash desktop is considered active if a non-desktop RootWindow was last
  81   // activated and the Ash desktop is still open.  As it is, the Ash desktop
  82   // will be considered the last active if a user switches from metro Chrome to
  83   // the Windows desktop but doesn't activate any Chrome windows there (e.g.,
  84   // by clicking on one or otherwise giving one focus).  Consider finding a way
  85   // to detect that the Windows desktop has been activated so that the native
  86   // desktop can be considered active once the user switches to it if its
  87   // BrowserList isn't empty.
  88   if ((ActiveDesktopMonitor::GetLastActivatedDesktopType() ==
  89        chrome::HOST_DESKTOP_TYPE_ASH) &&
  90       ash::Shell::HasInstance()) {
  91     return HOST_DESKTOP_TYPE_ASH;
  92   }
  93 #endif
  94   return HOST_DESKTOP_TYPE_NATIVE;
  95 }
  96
  97 }  // namespace chrome