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      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 #include "chrome/browser/ui/ash/multi_user/multi_user_window_manager.h"
      6 
      7 #include "base/logging.h"
      8 #include "chrome/browser/ui/ash/multi_user/multi_user_window_manager_stub.h"
      9 
     10 #if defined(OS_CHROMEOS)
     11 #include "ash/ash_switches.h"
     12 #include "ash/multi_profile_uma.h"
     13 #include "ash/session/session_state_delegate.h"
     14 #include "ash/shell.h"
     15 #include "ash/shell_delegate.h"
     16 #include "chrome/browser/ui/ash/multi_user/multi_user_window_manager_chromeos.h"
     17 #include "components/user_manager/user_info.h"
     18 #endif
     19 
     20 namespace {
     21 chrome::MultiUserWindowManager* g_instance = NULL;
     22 }  // namespace
     23 
     24 namespace chrome {
     25 
     26 // Caching the current multi profile mode to avoid expensive detection
     27 // operations.
     28 chrome::MultiUserWindowManager::MultiProfileMode
     29     chrome::MultiUserWindowManager::multi_user_mode_ =
     30         chrome::MultiUserWindowManager::MULTI_PROFILE_MODE_UNINITIALIZED;
     31 
     32 // static
     33 MultiUserWindowManager* MultiUserWindowManager::GetInstance() {
     34   return g_instance;
     35 }
     36 
     37 MultiUserWindowManager* MultiUserWindowManager::CreateInstance() {
     38   DCHECK(!g_instance);
     39   multi_user_mode_ = MULTI_PROFILE_MODE_OFF;
     40 #if defined(OS_CHROMEOS)
     41   ash::MultiProfileUMA::SessionMode mode =
     42       ash::MultiProfileUMA::SESSION_SINGLE_USER_MODE;
     43   if (!g_instance &&
     44       ash::Shell::GetInstance()->delegate()->IsMultiProfilesEnabled()) {
     45     g_instance =
     46         new MultiUserWindowManagerChromeOS(ash::Shell::GetInstance()
     47                                                ->session_state_delegate()
     48                                                ->GetUserInfo(0)
     49                                                ->GetUserID());
     50     multi_user_mode_ = MULTI_PROFILE_MODE_SEPARATED;
     51     mode = ash::MultiProfileUMA::SESSION_SEPARATE_DESKTOP_MODE;
     52   } else if (ash::Shell::GetInstance()->delegate()->IsMultiProfilesEnabled()) {
     53     // The side by side mode is using the Single user window manager since all
     54     // windows are unmanaged side by side.
     55     multi_user_mode_ = MULTI_PROFILE_MODE_MIXED;
     56     mode = ash::MultiProfileUMA::SESSION_SIDE_BY_SIDE_MODE;
     57   }
     58   ash::MultiProfileUMA::RecordSessionMode(mode);
     59 #endif
     60   // If there was no instance created yet we create a dummy instance.
     61   if (!g_instance)
     62     g_instance = new MultiUserWindowManagerStub();
     63 
     64   return g_instance;
     65 }
     66 
     67 // static
     68 MultiUserWindowManager::MultiProfileMode
     69 MultiUserWindowManager::GetMultiProfileMode() {
     70   return multi_user_mode_;
     71 }
     72 
     73 // satic
     74 bool MultiUserWindowManager::ShouldShowAvatar(aura::Window* window) {
     75   // Note: In case of the M-31 mode the window manager won't exist.
     76   if (GetMultiProfileMode() == MULTI_PROFILE_MODE_SEPARATED) {
     77     // If the window is shown on a different desktop than the user, it should
     78     // have the avatar icon
     79     MultiUserWindowManager* instance = GetInstance();
     80     return !instance->IsWindowOnDesktopOfUser(window,
     81                                               instance->GetWindowOwner(window));
     82   }
     83   return false;
     84 }
     85 
     86 // static
     87 void MultiUserWindowManager::DeleteInstance() {
     88   DCHECK(g_instance);
     89   delete g_instance;
     90   g_instance = NULL;
     91   multi_user_mode_ = MULTI_PROFILE_MODE_UNINITIALIZED;
     92 }
     93 
     94 void MultiUserWindowManager::SetInstanceForTest(
     95     MultiUserWindowManager* instance,
     96     MultiProfileMode mode) {
     97   if (g_instance)
     98     DeleteInstance();
     99   g_instance = instance;
    100   multi_user_mode_ = mode;
    101 }
    102 
    103 }  // namespace chrome
    104