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      1 // Copyright (c) 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/ash/chrome_shell_delegate.h"
      6 
      7 #include "ash/content_support/gpu_support_impl.h"
      8 #include "ash/magnifier/magnifier_constants.h"
      9 #include "ash/wm/window_state.h"
     10 #include "ash/wm/window_util.h"
     11 #include "chrome/browser/app_mode/app_mode_utils.h"
     12 #include "chrome/browser/lifetime/application_lifetime.h"
     13 #include "chrome/browser/profiles/profile_manager.h"
     14 #include "chrome/browser/profiles/profiles_state.h"
     15 #include "chrome/browser/ui/app_list/app_list_view_delegate.h"
     16 #include "chrome/browser/ui/ash/app_list/app_list_service_ash.h"
     17 #include "chrome/browser/ui/ash/ash_keyboard_controller_proxy.h"
     18 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
     19 #include "chrome/browser/ui/ash/launcher/launcher_context_menu.h"
     20 #include "chrome/browser/ui/browser_commands.h"
     21 #include "chrome/grit/chromium_strings.h"
     22 #include "components/signin/core/common/profile_management_switches.h"
     23 #include "ui/base/l10n/l10n_util.h"
     24 
     25 #if defined(OS_CHROMEOS)
     26 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
     27 #include "chrome/browser/chromeos/display/display_configuration_observer.h"
     28 #include "components/user_manager/user_manager.h"
     29 #endif
     30 
     31 // static
     32 ChromeShellDelegate* ChromeShellDelegate::instance_ = NULL;
     33 
     34 ChromeShellDelegate::ChromeShellDelegate()
     35     : shelf_delegate_(NULL) {
     36   instance_ = this;
     37   PlatformInit();
     38 }
     39 
     40 ChromeShellDelegate::~ChromeShellDelegate() {
     41   if (instance_ == this)
     42     instance_ = NULL;
     43 }
     44 
     45 bool ChromeShellDelegate::IsMultiProfilesEnabled() const {
     46   if (!profiles::IsMultipleProfilesEnabled())
     47     return false;
     48 #if defined(OS_CHROMEOS)
     49   // If there is a user manager, we need to see that we can at least have 2
     50   // simultaneous users to allow this feature.
     51   if (!user_manager::UserManager::IsInitialized())
     52     return false;
     53   size_t admitted_users_to_be_added = user_manager::UserManager::Get()
     54                                           ->GetUsersAdmittedForMultiProfile()
     55                                           .size();
     56   size_t logged_in_users =
     57       user_manager::UserManager::Get()->GetLoggedInUsers().size();
     58   if (!logged_in_users) {
     59     // The shelf gets created on the login screen and as such we have to create
     60     // all multi profile items of the the system tray menu before the user logs
     61     // in. For special cases like Kiosk mode and / or guest mode this isn't a
     62     // problem since either the browser gets restarted and / or the flag is not
     63     // allowed, but for an "ephermal" user (see crbug.com/312324) it is not
     64     // decided yet if he could add other users to his session or not.
     65     // TODO(skuhne): As soon as the issue above needs to be resolved, this logic
     66     // should change.
     67     logged_in_users = 1;
     68   }
     69   if (admitted_users_to_be_added + logged_in_users <= 1)
     70     return false;
     71 #endif
     72   return true;
     73 }
     74 
     75 bool ChromeShellDelegate::IsIncognitoAllowed() const {
     76 #if defined(OS_CHROMEOS)
     77   return chromeos::AccessibilityManager::Get()->IsIncognitoAllowed();
     78 #endif
     79   return true;
     80 }
     81 
     82 bool ChromeShellDelegate::IsRunningInForcedAppMode() const {
     83   return chrome::IsRunningInForcedAppMode();
     84 }
     85 
     86 bool ChromeShellDelegate::IsMultiAccountEnabled() const {
     87 #if defined(OS_CHROMEOS)
     88   return switches::IsEnableAccountConsistency();
     89 #endif
     90   return false;
     91 }
     92 
     93 void ChromeShellDelegate::Exit() {
     94   chrome::AttemptUserExit();
     95 }
     96 
     97 content::BrowserContext* ChromeShellDelegate::GetActiveBrowserContext() {
     98 #if defined(OS_CHROMEOS)
     99   DCHECK(user_manager::UserManager::Get()->GetLoggedInUsers().size());
    100 #endif
    101   return ProfileManager::GetActiveUserProfile();
    102 }
    103 
    104 app_list::AppListViewDelegate* ChromeShellDelegate::GetAppListViewDelegate() {
    105   DCHECK(ash::Shell::HasInstance());
    106   return AppListServiceAsh::GetInstance()->GetViewDelegate(
    107       Profile::FromBrowserContext(GetActiveBrowserContext()));
    108 }
    109 
    110 ash::ShelfDelegate* ChromeShellDelegate::CreateShelfDelegate(
    111     ash::ShelfModel* model) {
    112   if (!shelf_delegate_) {
    113     shelf_delegate_ = ChromeLauncherController::CreateInstance(NULL, model);
    114     shelf_delegate_->Init();
    115   }
    116   return shelf_delegate_;
    117 }
    118 
    119 ui::MenuModel* ChromeShellDelegate::CreateContextMenu(
    120     aura::Window* root,
    121     ash::ShelfItemDelegate* item_delegate,
    122     ash::ShelfItem* item) {
    123   DCHECK(shelf_delegate_);
    124   // Don't show context menu for exclusive app runtime mode.
    125   if (chrome::IsRunningInAppMode())
    126     return NULL;
    127 
    128   if (item_delegate && item)
    129     return new LauncherContextMenu(shelf_delegate_, item_delegate, item, root);
    130 
    131   return new LauncherContextMenu(shelf_delegate_, root);
    132 }
    133 
    134 ash::GPUSupport* ChromeShellDelegate::CreateGPUSupport() {
    135   // Chrome uses real GPU support.
    136   return new ash::GPUSupportImpl;
    137 }
    138 
    139 base::string16 ChromeShellDelegate::GetProductName() const {
    140   return l10n_util::GetStringUTF16(IDS_PRODUCT_NAME);
    141 }
    142 
    143 keyboard::KeyboardControllerProxy*
    144     ChromeShellDelegate::CreateKeyboardControllerProxy() {
    145   return new AshKeyboardControllerProxy();
    146 }
    147 
    148 void ChromeShellDelegate::VirtualKeyboardActivated(bool activated) {
    149   FOR_EACH_OBSERVER(ash::VirtualKeyboardStateObserver,
    150                     keyboard_state_observer_list_,
    151                     OnVirtualKeyboardStateChanged(activated));
    152 }
    153 
    154 void ChromeShellDelegate::AddVirtualKeyboardStateObserver(
    155     ash::VirtualKeyboardStateObserver* observer) {
    156   keyboard_state_observer_list_.AddObserver(observer);
    157 }
    158 
    159 void ChromeShellDelegate::RemoveVirtualKeyboardStateObserver(
    160     ash::VirtualKeyboardStateObserver* observer) {
    161   keyboard_state_observer_list_.RemoveObserver(observer);
    162 }
    163