ash/shell.cc

   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 "ash/shell.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9
  10 #include "ash/accelerators/accelerator_controller.h"
  11 #include "ash/accelerators/accelerator_filter.h"
  12 #include "ash/accelerators/focus_manager_factory.h"
  13 #include "ash/accelerators/nested_dispatcher_controller.h"
  14 #include "ash/ash_switches.h"
  15 #include "ash/autoclick/autoclick_controller.h"
  16 #include "ash/caps_lock_delegate.h"
  17 #include "ash/desktop_background/desktop_background_controller.h"
  18 #include "ash/desktop_background/desktop_background_view.h"
  19 #include "ash/desktop_background/user_wallpaper_delegate.h"
  20 #include "ash/display/display_controller.h"
  21 #include "ash/display/display_manager.h"
  22 #include "ash/display/event_transformation_handler.h"
  23 #include "ash/display/mouse_cursor_event_filter.h"
  24 #include "ash/display/resolution_notification_controller.h"
  25 #include "ash/display/screen_position_controller.h"
  26 #include "ash/display/virtual_keyboard_window_controller.h"
  27 #include "ash/drag_drop/drag_drop_controller.h"
  28 #include "ash/first_run/first_run_helper_impl.h"
  29 #include "ash/focus_cycler.h"
  30 #include "ash/high_contrast/high_contrast_controller.h"
  31 #include "ash/host/root_window_host_factory.h"
  32 #include "ash/keyboard_uma_event_filter.h"
  33 #include "ash/magnifier/magnification_controller.h"
  34 #include "ash/magnifier/partial_magnification_controller.h"
  35 #include "ash/media_delegate.h"
  36 #include "ash/new_window_delegate.h"
  37 #include "ash/root_window_controller.h"
  38 #include "ash/screen_ash.h"
  39 #include "ash/session_state_delegate.h"
  40 #include "ash/shelf/app_list_shelf_item_delegate.h"
  41 #include "ash/shelf/shelf_delegate.h"
  42 #include "ash/shelf/shelf_item_delegate.h"
  43 #include "ash/shelf/shelf_item_delegate_manager.h"
  44 #include "ash/shelf/shelf_layout_manager.h"
  45 #include "ash/shelf/shelf_model.h"
  46 #include "ash/shelf/shelf_widget.h"
  47 #include "ash/shelf/shelf_window_watcher.h"
  48 #include "ash/shell_delegate.h"
  49 #include "ash/shell_factory.h"
  50 #include "ash/shell_window_ids.h"
  51 #include "ash/system/locale/locale_notification_controller.h"
  52 #include "ash/system/status_area_widget.h"
  53 #include "ash/system/tray/system_tray_delegate.h"
  54 #include "ash/system/tray/system_tray_notifier.h"
  55 #include "ash/wm/app_list_controller.h"
  56 #include "ash/wm/ash_focus_rules.h"
  57 #include "ash/wm/ash_native_cursor_manager.h"
  58 #include "ash/wm/base_layout_manager.h"
  59 #include "ash/wm/coordinate_conversion.h"
  60 #include "ash/wm/custom_frame_view_ash.h"
  61 #include "ash/wm/event_client_impl.h"
  62 #include "ash/wm/event_rewriter_event_filter.h"
  63 #include "ash/wm/lock_state_controller.h"
  64 #include "ash/wm/mru_window_tracker.h"
  65 #include "ash/wm/overlay_event_filter.h"
  66 #include "ash/wm/overview/window_selector_controller.h"
  67 #include "ash/wm/power_button_controller.h"
  68 #include "ash/wm/resize_shadow_controller.h"
  69 #include "ash/wm/root_window_layout_manager.h"
  70 #include "ash/wm/screen_dimmer.h"
  71 #include "ash/wm/system_gesture_event_filter.h"
  72 #include "ash/wm/system_modal_container_event_filter.h"
  73 #include "ash/wm/system_modal_container_layout_manager.h"
  74 #include "ash/wm/toplevel_window_event_handler.h"
  75 #include "ash/wm/user_activity_detector.h"
  76 #include "ash/wm/video_detector.h"
  77 #include "ash/wm/window_animations.h"
  78 #include "ash/wm/window_cycle_controller.h"
  79 #include "ash/wm/window_positioner.h"
  80 #include "ash/wm/window_properties.h"
  81 #include "ash/wm/window_util.h"
  82 #include "ash/wm/workspace_controller.h"
  83 #include "base/bind.h"
  84 #include "base/command_line.h"
  85 #include "base/debug/leak_annotations.h"
  86 #include "base/debug/trace_event.h"
  87 #include "content/public/browser/user_metrics.h"
  88 #include "ui/aura/client/aura_constants.h"
  89 #include "ui/aura/client/user_action_client.h"
  90 #include "ui/aura/env.h"
  91 #include "ui/aura/layout_manager.h"
  92 #include "ui/aura/root_window.h"
  93 #include "ui/aura/window.h"
  94 #include "ui/base/ui_base_switches.h"
  95 #include "ui/compositor/layer.h"
  96 #include "ui/compositor/layer_animator.h"
  97 #include "ui/events/event_target_iterator.h"
  98 #include "ui/gfx/display.h"
  99 #include "ui/gfx/image/image_skia.h"
 100 #include "ui/gfx/screen.h"
 101 #include "ui/gfx/size.h"
 102 #include "ui/keyboard/keyboard.h"
 103 #include "ui/keyboard/keyboard_controller.h"
 104 #include "ui/keyboard/keyboard_switches.h"
 105 #include "ui/keyboard/keyboard_util.h"
 106 #include "ui/message_center/message_center.h"
 107 #include "ui/views/corewm/compound_event_filter.h"
 108 #include "ui/views/corewm/corewm_switches.h"
 109 #include "ui/views/corewm/focus_controller.h"
 110 #include "ui/views/corewm/input_method_event_filter.h"
 111 #include "ui/views/corewm/shadow_controller.h"
 112 #include "ui/views/corewm/tooltip_aura.h"
 113 #include "ui/views/corewm/tooltip_controller.h"
 114 #include "ui/views/corewm/visibility_controller.h"
 115 #include "ui/views/corewm/window_modality_controller.h"
 116 #include "ui/views/focus/focus_manager_factory.h"
 117 #include "ui/views/widget/native_widget_aura.h"
 118 #include "ui/views/widget/widget.h"
 119
 120 #if defined(OS_CHROMEOS)
 121 #if defined(USE_X11)
 122 #include "ash/ash_constants.h"
 123 #include "ash/display/display_change_observer_chromeos.h"
 124 #include "ash/display/display_error_observer_chromeos.h"
 125 #include "ash/display/output_configurator_animation.h"
 126 #include "base/message_loop/message_pump_x11.h"
 127 #include "base/sys_info.h"
 128 #include "chromeos/display/output_configurator.h"
 129 #include "content/public/browser/gpu_data_manager.h"
 130 #include "gpu/config/gpu_feature_type.h"
 131 #endif  // defined(USE_X11)
 132 #include "ash/sticky_keys/sticky_keys_controller.h"
 133 #include "ash/system/chromeos/brightness/brightness_controller_chromeos.h"
 134 #include "ash/system/chromeos/power/power_event_observer.h"
 135 #include "ash/system/chromeos/power/power_status.h"
 136 #include "ash/system/chromeos/power/user_activity_notifier.h"
 137 #include "ash/system/chromeos/power/video_activity_notifier.h"
 138 #endif  // defined(OS_CHROMEOS)
 139
 140 namespace ash {
 141
 142 namespace {
 143
 144 using aura::Window;
 145 using views::Widget;
 146
 147 // A Corewm VisibilityController subclass that calls the Ash animation routine
 148 // so we can pick up our extended animations. See ash/wm/window_animations.h.
 149 class AshVisibilityController : public views::corewm::VisibilityController {
 150  public:
 151   AshVisibilityController() {}
 152   virtual ~AshVisibilityController() {}
 153
 154  private:
 155   // Overridden from views::corewm::VisibilityController:
 156   virtual bool CallAnimateOnChildWindowVisibilityChanged(
 157       aura::Window* window,
 158       bool visible) OVERRIDE {
 159     return AnimateOnChildWindowVisibilityChanged(window, visible);
 160   }
 161
 162   DISALLOW_COPY_AND_ASSIGN(AshVisibilityController);
 163 };
 164
 165 }  // namespace
 166
 167 // static
 168 Shell* Shell::instance_ = NULL;
 169 // static
 170 bool Shell::initially_hide_cursor_ = false;
 171
 172 ////////////////////////////////////////////////////////////////////////////////
 173 // Shell, public:
 174
 175 // static
 176 Shell* Shell::CreateInstance(ShellDelegate* delegate) {
 177   CHECK(!instance_);
 178   instance_ = new Shell(delegate);
 179   instance_->Init();
 180   return instance_;
 181 }
 182
 183 // static
 184 Shell* Shell::GetInstance() {
 185   DCHECK(instance_);
 186   return instance_;
 187 }
 188
 189 // static
 190 bool Shell::HasInstance() {
 191   return !!instance_;
 192 }
 193
 194 // static
 195 void Shell::DeleteInstance() {
 196   delete instance_;
 197   instance_ = NULL;
 198 }
 199
 200 // static
 201 internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
 202   return internal::GetRootWindowController(GetPrimaryRootWindow());
 203 }
 204
 205 // static
 206 Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
 207   return Shell::GetInstance()->display_controller()->
 208       GetAllRootWindowControllers();
 209 }
 210
 211 // static
 212 aura::Window* Shell::GetPrimaryRootWindow() {
 213   return GetInstance()->display_controller()->GetPrimaryRootWindow();
 214 }
 215
 216 // static
 217 aura::Window* Shell::GetTargetRootWindow() {
 218   Shell* shell = GetInstance();
 219   if (shell->scoped_target_root_window_)
 220     return shell->scoped_target_root_window_;
 221   return shell->target_root_window_;
 222 }
 223
 224 // static
 225 gfx::Screen* Shell::GetScreen() {
 226   return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
 227 }
 228
 229 // static
 230 aura::Window::Windows Shell::GetAllRootWindows() {
 231   return Shell::GetInstance()->display_controller()->
 232       GetAllRootWindows();
 233 }
 234
 235 // static
 236 aura::Window* Shell::GetContainer(aura::Window* root_window,
 237                                   int container_id) {
 238   return root_window->GetChildById(container_id);
 239 }
 240
 241 // static
 242 const aura::Window* Shell::GetContainer(const aura::Window* root_window,
 243                                         int container_id) {
 244   return root_window->GetChildById(container_id);
 245 }
 246
 247 // static
 248 std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
 249     int container_id,
 250     aura::Window* priority_root) {
 251   std::vector<aura::Window*> containers;
 252   aura::Window::Windows root_windows = GetAllRootWindows();
 253   for (aura::Window::Windows::const_iterator it = root_windows.begin();
 254        it != root_windows.end(); ++it) {
 255     aura::Window* container = (*it)->GetChildById(container_id);
 256     if (container) {
 257       if (priority_root && priority_root->Contains(container))
 258         containers.insert(containers.begin(), container);
 259       else
 260         containers.push_back(container);
 261     }
 262   }
 263   return containers;
 264 }
 265
 266 void Shell::ShowContextMenu(const gfx::Point& location_in_screen,
 267                             ui::MenuSourceType source_type) {
 268   // No context menus if there is no session with an active user.
 269   if (!session_state_delegate_->NumberOfLoggedInUsers())
 270     return;
 271   // No context menus when screen is locked.
 272   if (session_state_delegate_->IsScreenLocked())
 273     return;
 274
 275   aura::Window* root =
 276       wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
 277   internal::GetRootWindowController(root)->
 278       ShowContextMenu(location_in_screen, source_type);
 279 }
 280
 281 void Shell::ToggleAppList(aura::Window* window) {
 282   // If the context window is not given, show it on the target root window.
 283   if (!window)
 284     window = GetTargetRootWindow();
 285   if (!app_list_controller_)
 286     app_list_controller_.reset(new internal::AppListController);
 287   app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
 288 }
 289
 290 bool Shell::GetAppListTargetVisibility() const {
 291   return app_list_controller_.get() &&
 292       app_list_controller_->GetTargetVisibility();
 293 }
 294
 295 aura::Window* Shell::GetAppListWindow() {
 296   return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
 297 }
 298
 299 app_list::AppListView* Shell::GetAppListView() {
 300   return app_list_controller_.get() ? app_list_controller_->GetView() : NULL;
 301 }
 302
 303 bool Shell::IsSystemModalWindowOpen() const {
 304   if (simulate_modal_window_open_for_testing_)
 305     return true;
 306   const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 307       internal::kShellWindowId_SystemModalContainer, NULL);
 308   for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
 309        cit != containers.end(); ++cit) {
 310     for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
 311          wit != (*cit)->children().end(); ++wit) {
 312       if ((*wit)->GetProperty(aura::client::kModalKey) ==
 313           ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
 314         return true;
 315       }
 316     }
 317   }
 318   return false;
 319 }
 320
 321 views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
 322     views::Widget* widget) {
 323   // Use translucent-style window frames for dialogs.
 324   return new CustomFrameViewAsh(widget);
 325 }
 326
 327 void Shell::RotateFocus(Direction direction) {
 328   focus_cycler_->RotateFocus(
 329       direction == FORWARD ? internal::FocusCycler::FORWARD :
 330                              internal::FocusCycler::BACKWARD);
 331 }
 332
 333 void Shell::SetDisplayWorkAreaInsets(Window* contains,
 334                                      const gfx::Insets& insets) {
 335   if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
 336           contains, insets)) {
 337     return;
 338   }
 339   FOR_EACH_OBSERVER(ShellObserver, observers_,
 340                     OnDisplayWorkAreaInsetsChanged());
 341 }
 342
 343 void Shell::OnLoginStateChanged(user::LoginStatus status) {
 344   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
 345 }
 346
 347 void Shell::OnLoginUserProfilePrepared() {
 348   CreateShelf();
 349   CreateKeyboard();
 350 }
 351
 352 void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
 353   RootWindowControllerList controllers = GetAllRootWindowControllers();
 354   for (RootWindowControllerList::iterator iter = controllers.begin();
 355        iter != controllers.end(); ++iter)
 356     (*iter)->UpdateAfterLoginStatusChange(status);
 357 }
 358
 359 void Shell::OnAppTerminating() {
 360   FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
 361 }
 362
 363 void Shell::OnLockStateChanged(bool locked) {
 364   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
 365 #ifndef NDEBUG
 366   // Make sure that there is no system modal in Lock layer when unlocked.
 367   if (!locked) {
 368     std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 369         internal::kShellWindowId_LockSystemModalContainer,
 370         GetPrimaryRootWindow());
 371     for (std::vector<aura::Window*>::const_iterator iter = containers.begin();
 372          iter != containers.end(); ++iter) {
 373       DCHECK_EQ(0u, (*iter)->children().size());
 374     }
 375   }
 376 #endif
 377 }
 378
 379 void Shell::CreateShelf() {
 380   RootWindowControllerList controllers = GetAllRootWindowControllers();
 381   for (RootWindowControllerList::iterator iter = controllers.begin();
 382        iter != controllers.end(); ++iter)
 383     (*iter)->shelf()->CreateShelf();
 384 }
 385
 386 void Shell::CreateKeyboard() {
 387   // TODO(bshe): Primary root window controller may not be the controller to
 388   // attach virtual keyboard. See http://crbug.com/303429
 389   InitKeyboard();
 390   if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
 391     display_controller()->virtual_keyboard_window_controller()->
 392         ActivateKeyboard(keyboard_controller_.get());
 393   } else {
 394     GetPrimaryRootWindowController()->
 395         ActivateKeyboard(keyboard_controller_.get());
 396   }
 397 }
 398
 399 void Shell::ShowShelf() {
 400   RootWindowControllerList controllers = GetAllRootWindowControllers();
 401   for (RootWindowControllerList::iterator iter = controllers.begin();
 402        iter != controllers.end(); ++iter)
 403     (*iter)->ShowShelf();
 404 }
 405
 406 void Shell::AddShellObserver(ShellObserver* observer) {
 407   observers_.AddObserver(observer);
 408 }
 409
 410 void Shell::RemoveShellObserver(ShellObserver* observer) {
 411   observers_.RemoveObserver(observer);
 412 }
 413
 414 void Shell::UpdateShelfVisibility() {
 415   RootWindowControllerList controllers = GetAllRootWindowControllers();
 416   for (RootWindowControllerList::iterator iter = controllers.begin();
 417        iter != controllers.end(); ++iter)
 418     if ((*iter)->shelf())
 419       (*iter)->UpdateShelfVisibility();
 420 }
 421
 422 void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 423                                      aura::Window* root_window) {
 424   ash::internal::ShelfLayoutManager::ForShelf(root_window)->
 425       SetAutoHideBehavior(behavior);
 426 }
 427
 428 ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
 429     aura::Window* root_window) const {
 430   return ash::internal::ShelfLayoutManager::ForShelf(root_window)->
 431       auto_hide_behavior();
 432 }
 433
 434 void Shell::SetShelfAlignment(ShelfAlignment alignment,
 435                               aura::Window* root_window) {
 436   if (ash::internal::ShelfLayoutManager::ForShelf(root_window)->
 437       SetAlignment(alignment)) {
 438     FOR_EACH_OBSERVER(
 439         ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
 440   }
 441 }
 442
 443 ShelfAlignment Shell::GetShelfAlignment(aura::Window* root_window) {
 444   return internal::GetRootWindowController(root_window)->
 445       GetShelfLayoutManager()->GetAlignment();
 446 }
 447
 448 void Shell::SetDimming(bool should_dim) {
 449   RootWindowControllerList controllers = GetAllRootWindowControllers();
 450   for (RootWindowControllerList::iterator iter = controllers.begin();
 451        iter != controllers.end(); ++iter)
 452     (*iter)->screen_dimmer()->SetDimming(should_dim);
 453 }
 454
 455 void Shell::NotifyFullscreenStateChange(bool is_fullscreen,
 456                                         aura::Window* root_window) {
 457   FOR_EACH_OBSERVER(ShellObserver, observers_, OnFullscreenStateChanged(
 458       is_fullscreen, root_window));
 459 }
 460
 461 void Shell::CreateModalBackground(aura::Window* window) {
 462   if (!modality_filter_) {
 463     modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
 464     AddPreTargetHandler(modality_filter_.get());
 465   }
 466   RootWindowControllerList controllers = GetAllRootWindowControllers();
 467   for (RootWindowControllerList::iterator iter = controllers.begin();
 468        iter != controllers.end(); ++iter)
 469     (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
 470 }
 471
 472 void Shell::OnModalWindowRemoved(aura::Window* removed) {
 473   RootWindowControllerList controllers = GetAllRootWindowControllers();
 474   bool activated = false;
 475   for (RootWindowControllerList::iterator iter = controllers.begin();
 476        iter != controllers.end() && !activated; ++iter) {
 477     activated = (*iter)->GetSystemModalLayoutManager(removed)->
 478         ActivateNextModalWindow();
 479   }
 480   if (!activated) {
 481     RemovePreTargetHandler(modality_filter_.get());
 482     modality_filter_.reset();
 483     for (RootWindowControllerList::iterator iter = controllers.begin();
 484          iter != controllers.end(); ++iter)
 485       (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
 486   }
 487 }
 488
 489 WebNotificationTray* Shell::GetWebNotificationTray() {
 490   return GetPrimaryRootWindowController()->shelf()->
 491       status_area_widget()->web_notification_tray();
 492 }
 493
 494 bool Shell::HasPrimaryStatusArea() {
 495   ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
 496   return shelf && shelf->status_area_widget();
 497 }
 498
 499 SystemTray* Shell::GetPrimarySystemTray() {
 500   return GetPrimaryRootWindowController()->GetSystemTray();
 501 }
 502
 503 ShelfDelegate* Shell::GetShelfDelegate() {
 504   if (!shelf_delegate_) {
 505     shelf_model_.reset(new ShelfModel);
 506     // Creates ShelfItemDelegateManager before ShelfDelegate.
 507     shelf_item_delegate_manager_.reset(
 508         new ShelfItemDelegateManager(shelf_model_.get()));
 509
 510     shelf_delegate_.reset(delegate_->CreateShelfDelegate(shelf_model_.get()));
 511     scoped_ptr<ShelfItemDelegate> controller(
 512         new internal::AppListShelfItemDelegate);
 513
 514     // Finding the shelf model's location of the app list and setting its
 515     // ShelfItemDelegate.
 516     int app_list_index = shelf_model_->GetItemIndexForType(TYPE_APP_LIST);
 517     DCHECK_GE(app_list_index, 0);
 518     LauncherID app_list_id = shelf_model_->items()[app_list_index].id;
 519     DCHECK(app_list_id);
 520     shelf_item_delegate_manager_->SetShelfItemDelegate(app_list_id,
 521                                                        controller.Pass());
 522     shelf_window_watcher_.reset(new internal::ShelfWindowWatcher(
 523                                         shelf_model_.get(),
 524                                         shelf_item_delegate_manager_.get()));
 525   }
 526   return shelf_delegate_.get();
 527 }
 528
 529 void Shell::SetTouchHudProjectionEnabled(bool enabled) {
 530   if (is_touch_hud_projection_enabled_ == enabled)
 531     return;
 532
 533   is_touch_hud_projection_enabled_ = enabled;
 534   FOR_EACH_OBSERVER(ShellObserver, observers_,
 535                     OnTouchHudProjectionToggled(enabled));
 536 }
 537
 538 #if defined(OS_CHROMEOS)
 539 ash::FirstRunHelper* Shell::CreateFirstRunHelper() {
 540   return new ash::FirstRunHelperImpl;
 541 }
 542 #endif  // defined(OS_CHROMEOS)
 543
 544 void Shell::DoInitialWorkspaceAnimation() {
 545   return GetPrimaryRootWindowController()->workspace_controller()->
 546       DoInitialAnimation();
 547 }
 548
 549 ////////////////////////////////////////////////////////////////////////////////
 550 // Shell, private:
 551
 552 Shell::Shell(ShellDelegate* delegate)
 553     : screen_(new ScreenAsh),
 554       target_root_window_(NULL),
 555       scoped_target_root_window_(NULL),
 556       delegate_(delegate),
 557       window_positioner_(new WindowPositioner),
 558       activation_client_(NULL),
 559 #if defined(OS_CHROMEOS) && defined(USE_X11)
 560       output_configurator_(new chromeos::OutputConfigurator()),
 561 #endif  // defined(OS_CHROMEOS) && defined(USE_X11)
 562       native_cursor_manager_(new AshNativeCursorManager),
 563       cursor_manager_(scoped_ptr<views::corewm::NativeCursorManager>(
 564           native_cursor_manager_)),
 565       simulate_modal_window_open_for_testing_(false),
 566       is_touch_hud_projection_enabled_(false) {
 567   DCHECK(delegate_.get());
 568   display_manager_.reset(new internal::DisplayManager);
 569
 570   ANNOTATE_LEAKING_OBJECT_PTR(screen_);  // see crbug.com/156466
 571   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE, screen_);
 572   if (!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE))
 573     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_);
 574   display_controller_.reset(new DisplayController);
 575 #if defined(OS_CHROMEOS) && defined(USE_X11)
 576   bool is_panel_fitting_disabled =
 577       content::GpuDataManager::GetInstance()->IsFeatureBlacklisted(
 578           gpu::GPU_FEATURE_TYPE_PANEL_FITTING);
 579
 580   output_configurator_->Init(!is_panel_fitting_disabled);
 581   user_metrics_recorder_.reset(new UserMetricsRecorder);
 582
 583   base::MessagePumpX11::Current()->AddDispatcherForRootWindow(
 584       output_configurator());
 585   // We can't do this with a root window listener because XI_HierarchyChanged
 586   // messages don't have a target window.
 587   base::MessagePumpX11::Current()->AddObserver(output_configurator());
 588 #endif  // defined(OS_CHROMEOS)
 589
 590 #if defined(OS_CHROMEOS)
 591   internal::PowerStatus::Initialize();
 592 #endif
 593 }
 594
 595 Shell::~Shell() {
 596   TRACE_EVENT0("shutdown", "ash::Shell::Destructor");
 597
 598   views::FocusManagerFactory::Install(NULL);
 599
 600   // Remove the focus from any window. This will prevent overhead and side
 601   // effects (e.g. crashes) from changing focus during shutdown.
 602   // See bug crbug.com/134502.
 603   aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
 604
 605   // Please keep in same order as in Init() because it's easy to miss one.
 606   if (window_modality_controller_)
 607     window_modality_controller_.reset();
 608   RemovePreTargetHandler(event_rewriter_filter_.get());
 609   RemovePreTargetHandler(user_activity_detector_.get());
 610   RemovePreTargetHandler(overlay_filter_.get());
 611   RemovePreTargetHandler(input_method_filter_.get());
 612   RemovePreTargetHandler(accelerator_filter_.get());
 613   RemovePreTargetHandler(event_transformation_handler_.get());
 614   RemovePreTargetHandler(toplevel_window_event_handler_.get());
 615   RemovePostTargetHandler(toplevel_window_event_handler_.get());
 616   RemovePreTargetHandler(system_gesture_filter_.get());
 617   RemovePreTargetHandler(keyboard_metrics_filter_.get());
 618   if (mouse_cursor_filter_)
 619     RemovePreTargetHandler(mouse_cursor_filter_.get());
 620
 621   // TooltipController is deleted with the Shell so removing its references.
 622   RemovePreTargetHandler(tooltip_controller_.get());
 623
 624   // AppList needs to be released before shelf layout manager, which is
 625   // destroyed with shelf container in the loop below. However, app list
 626   // container is now on top of shelf container and released after it.
 627   // TODO(xiyuan): Move it back when app list container is no longer needed.
 628   app_list_controller_.reset();
 629
 630   // Destroy SystemTrayDelegate before destroying the status area(s).
 631   system_tray_delegate_->Shutdown();
 632   system_tray_delegate_.reset();
 633
 634   locale_notification_controller_.reset();
 635
 636   // Drag-and-drop must be canceled prior to close all windows.
 637   drag_drop_controller_.reset();
 638
 639   // Controllers who have WindowObserver added must be deleted
 640   // before |display_controller_| is deleted.
 641
 642 #if defined(OS_CHROMEOS)
 643   // VideoActivityNotifier must be deleted before |video_detector_| is
 644   // deleted because it's observing video activity through
 645   // VideoDetectorObserver interface.
 646   video_activity_notifier_.reset();
 647 #endif  // defined(OS_CHROMEOS)
 648   video_detector_.reset();
 649
 650   shadow_controller_.reset();
 651   resize_shadow_controller_.reset();
 652
 653   window_selector_controller_.reset();
 654   window_cycle_controller_.reset();
 655   mru_window_tracker_.reset();
 656
 657   // |shelf_window_watcher_| has a weak pointer to |shelf_Model_|
 658   // and has window observers.
 659   shelf_window_watcher_.reset();
 660
 661   // Destroy all child windows including widgets.
 662   display_controller_->CloseChildWindows();
 663   display_controller_->CloseNonDesktopDisplay();
 664
 665   // Chrome implementation of shelf delegate depends on FocusClient,
 666   // so must be deleted before |focus_client_|.
 667   shelf_delegate_.reset();
 668   focus_client_.reset();
 669
 670   // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
 671   // needs to remove observers from it.
 672   system_tray_notifier_.reset();
 673
 674   // These need a valid Shell instance to clean up properly, so explicitly
 675   // delete them before invalidating the instance.
 676   // Alphabetical. TODO(oshima): sort.
 677   magnification_controller_.reset();
 678   partial_magnification_controller_.reset();
 679   tooltip_controller_.reset();
 680   event_client_.reset();
 681   nested_dispatcher_controller_.reset();
 682   toplevel_window_event_handler_.reset();
 683   user_action_client_.reset();
 684   visibility_controller_.reset();
 685   // |shelf_item_delegate_manager_| observes |shelf_model_|. It must be
 686   // destroyed before |shelf_model_| is destroyed.
 687   shelf_item_delegate_manager_.reset();
 688   shelf_model_.reset();
 689
 690   power_button_controller_.reset();
 691   lock_state_controller_.reset();
 692
 693   resolution_notification_controller_.reset();
 694   desktop_background_controller_.reset();
 695
 696   // This also deletes all RootWindows. Note that we invoke Shutdown() on
 697   // DisplayController before resetting |display_controller_|, since destruction
 698   // of its owned RootWindowControllers relies on the value.
 699   display_controller_->Shutdown();
 700   display_controller_.reset();
 701   screen_position_controller_.reset();
 702
 703   keyboard_controller_.reset();
 704   accessibility_delegate_.reset();
 705   new_window_delegate_.reset();
 706   media_delegate_.reset();
 707
 708 #if defined(OS_CHROMEOS) && defined(USE_X11)
 709    if (display_change_observer_)
 710     output_configurator_->RemoveObserver(display_change_observer_.get());
 711   if (output_configurator_animation_)
 712     output_configurator_->RemoveObserver(output_configurator_animation_.get());
 713   if (display_error_observer_)
 714     output_configurator_->RemoveObserver(display_error_observer_.get());
 715   base::MessagePumpX11::Current()->RemoveDispatcherForRootWindow(
 716       output_configurator());
 717   base::MessagePumpX11::Current()->RemoveObserver(output_configurator());
 718   display_change_observer_.reset();
 719 #endif  // defined(OS_CHROMEOS)
 720
 721 #if defined(OS_CHROMEOS)
 722   internal::PowerStatus::Shutdown();
 723 #endif
 724
 725   DCHECK(instance_ == this);
 726   instance_ = NULL;
 727 }
 728
 729 void Shell::Init() {
 730   CommandLine* command_line = CommandLine::ForCurrentProcess();
 731
 732   delegate_->PreInit();
 733   if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
 734     display_manager_->SetSecondDisplayMode(
 735         internal::DisplayManager::VIRTUAL_KEYBOARD);
 736   }
 737   bool display_initialized = display_manager_->InitFromCommandLine();
 738 #if defined(OS_CHROMEOS) && defined(USE_X11)
 739   output_configurator_animation_.reset(
 740       new internal::OutputConfiguratorAnimation());
 741   output_configurator_->AddObserver(output_configurator_animation_.get());
 742
 743   if (!display_initialized && base::SysInfo::IsRunningOnChromeOS()) {
 744     display_change_observer_.reset(new internal::DisplayChangeObserver);
 745     // Register |display_change_observer_| first so that the rest of
 746     // observer gets invoked after the root windows are configured.
 747     output_configurator_->AddObserver(display_change_observer_.get());
 748     display_error_observer_.reset(new internal::DisplayErrorObserver());
 749     output_configurator_->AddObserver(display_error_observer_.get());
 750     output_configurator_->set_state_controller(display_change_observer_.get());
 751     output_configurator_->set_mirroring_controller(display_manager_.get());
 752     output_configurator_->Start(
 753         delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
 754     display_initialized = true;
 755   }
 756 #endif  // defined(OS_CHROMEOS) && defined(USE_X11)
 757   if (!display_initialized)
 758     display_manager_->InitDefaultDisplay();
 759
 760   // Install the custom factory first so that views::FocusManagers for Tray,
 761   // Shelf, and WallPaper could be created by the factory.
 762   views::FocusManagerFactory::Install(new AshFocusManagerFactory);
 763
 764   // Env creates the compositor. Historically it seems to have been implicitly
 765   // initialized first by the ActivationController, but now that FocusController
 766   // no longer does this we need to do it explicitly.
 767   aura::Env::CreateInstance();
 768
 769   // The WindowModalityController needs to be at the front of the input event
 770   // pretarget handler list to ensure that it processes input events when modal
 771   // windows are active.
 772   window_modality_controller_.reset(
 773       new views::corewm::WindowModalityController(this));
 774
 775   AddPreTargetHandler(this);
 776
 777   env_filter_.reset(new views::corewm::CompoundEventFilter);
 778   AddPreTargetHandler(env_filter_.get());
 779
 780   views::corewm::FocusController* focus_controller =
 781       new views::corewm::FocusController(new wm::AshFocusRules);
 782   focus_client_.reset(focus_controller);
 783   activation_client_ = focus_controller;
 784   activation_client_->AddObserver(this);
 785   focus_cycler_.reset(new internal::FocusCycler());
 786
 787   screen_position_controller_.reset(new internal::ScreenPositionController);
 788   root_window_host_factory_.reset(delegate_->CreateRootWindowHostFactory());
 789
 790   display_controller_->Start();
 791   display_controller_->InitPrimaryDisplay();
 792   aura::Window* root_window = display_controller_->GetPrimaryRootWindow();
 793   target_root_window_ = root_window;
 794
 795   resolution_notification_controller_.reset(
 796       new internal::ResolutionNotificationController);
 797
 798   cursor_manager_.SetDisplay(DisplayController::GetPrimaryDisplay());
 799
 800   nested_dispatcher_controller_.reset(new NestedDispatcherController);
 801   accelerator_controller_.reset(new AcceleratorController);
 802
 803   // The order in which event filters are added is significant.
 804   event_rewriter_filter_.reset(new internal::EventRewriterEventFilter);
 805   AddPreTargetHandler(event_rewriter_filter_.get());
 806
 807 #if defined(OS_CHROMEOS)
 808   // The StickyKeysController also rewrites events and must be added
 809   // before observers, but after the EventRewriterEventFilter.
 810   sticky_keys_controller_.reset(new StickyKeysController);
 811   AddPreTargetHandler(sticky_keys_controller_.get());
 812 #endif
 813
 814   // UserActivityDetector passes events to observers, so let them get
 815   // rewritten first.
 816   user_activity_detector_.reset(new UserActivityDetector);
 817   AddPreTargetHandler(user_activity_detector_.get());
 818
 819   overlay_filter_.reset(new internal::OverlayEventFilter);
 820   AddPreTargetHandler(overlay_filter_.get());
 821   AddShellObserver(overlay_filter_.get());
 822
 823   input_method_filter_.reset(new views::corewm::InputMethodEventFilter(
 824       root_window->GetDispatcher()->host()->GetAcceleratedWidget()));
 825   AddPreTargetHandler(input_method_filter_.get());
 826
 827   accelerator_filter_.reset(new internal::AcceleratorFilter);
 828   AddPreTargetHandler(accelerator_filter_.get());
 829
 830   event_transformation_handler_.reset(new internal::EventTransformationHandler);
 831   AddPreTargetHandler(event_transformation_handler_.get());
 832
 833   toplevel_window_event_handler_.reset(new ToplevelWindowEventHandler);
 834   AddPreTargetHandler(toplevel_window_event_handler_.get());
 835   AddPostTargetHandler(toplevel_window_event_handler_.get());
 836
 837   system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
 838   AddPreTargetHandler(system_gesture_filter_.get());
 839
 840   keyboard_metrics_filter_.reset(new internal::KeyboardUMAEventFilter);
 841   AddPreTargetHandler(keyboard_metrics_filter_.get());
 842
 843   // The keyboard system must be initialized before the RootWindowController is
 844   // created.
 845   if (keyboard::IsKeyboardEnabled())
 846     keyboard::InitializeKeyboard();
 847
 848   lock_state_controller_.reset(new LockStateController);
 849   power_button_controller_.reset(new PowerButtonController(
 850       lock_state_controller_.get()));
 851   AddShellObserver(lock_state_controller_.get());
 852
 853   drag_drop_controller_.reset(new internal::DragDropController);
 854   mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
 855   PrependPreTargetHandler(mouse_cursor_filter_.get());
 856
 857   // Create Controllers that may need root window.
 858   // TODO(oshima): Move as many controllers before creating
 859   // RootWindowController as possible.
 860   visibility_controller_.reset(new AshVisibilityController);
 861   user_action_client_.reset(delegate_->CreateUserActionClient());
 862
 863   magnification_controller_.reset(
 864       MagnificationController::CreateInstance());
 865   mru_window_tracker_.reset(new MruWindowTracker(activation_client_));
 866
 867   partial_magnification_controller_.reset(
 868       new PartialMagnificationController());
 869
 870   autoclick_controller_.reset(AutoclickController::CreateInstance());
 871
 872   high_contrast_controller_.reset(new HighContrastController);
 873   video_detector_.reset(new VideoDetector);
 874   window_cycle_controller_.reset(new WindowCycleController());
 875   window_selector_controller_.reset(new WindowSelectorController());
 876
 877   tooltip_controller_.reset(
 878       new views::corewm::TooltipController(
 879           scoped_ptr<views::corewm::Tooltip>(
 880               new views::corewm::TooltipAura(gfx::SCREEN_TYPE_ALTERNATE))));
 881   AddPreTargetHandler(tooltip_controller_.get());
 882
 883   event_client_.reset(new internal::EventClientImpl);
 884
 885   // This controller needs to be set before SetupManagedWindowMode.
 886   desktop_background_controller_.reset(new DesktopBackgroundController());
 887   user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
 888
 889   // StatusAreaWidget uses Shell's CapsLockDelegate.
 890   caps_lock_delegate_.reset(delegate_->CreateCapsLockDelegate());
 891
 892   session_state_delegate_.reset(delegate_->CreateSessionStateDelegate());
 893   accessibility_delegate_.reset(delegate_->CreateAccessibilityDelegate());
 894   new_window_delegate_.reset(delegate_->CreateNewWindowDelegate());
 895   media_delegate_.reset(delegate_->CreateMediaDelegate());
 896
 897   if (!command_line->HasSwitch(views::corewm::switches::kNoDropShadows)) {
 898     resize_shadow_controller_.reset(new internal::ResizeShadowController());
 899     shadow_controller_.reset(
 900         new views::corewm::ShadowController(activation_client_));
 901   }
 902
 903   // Create system_tray_notifier_ before the delegate.
 904   system_tray_notifier_.reset(new ash::SystemTrayNotifier());
 905
 906   // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
 907   system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
 908   DCHECK(system_tray_delegate_.get());
 909
 910   locale_notification_controller_.reset(
 911       new internal::LocaleNotificationController);
 912
 913   // Initialize system_tray_delegate_ after StatusAreaWidget is created.
 914   system_tray_delegate_->Initialize();
 915
 916   // TODO(oshima): Initialize all RootWindowControllers once, and
 917   // initialize controller/delegates above when initializing the
 918   // primary root window controller.
 919   internal::RootWindowController::CreateForPrimaryDisplay(
 920       root_window->GetDispatcher());
 921
 922   display_controller_->InitSecondaryDisplays();
 923
 924   // It needs to be created after RootWindowController has been created
 925   // (which calls OnWindowResized has been called, otherwise the
 926   // widget will not paint when restoring after a browser crash.  Also it needs
 927   // to be created after InitSecondaryDisplays() to initialize the wallpapers in
 928   // the correct size.
 929   user_wallpaper_delegate_->InitializeWallpaper();
 930
 931   if (initially_hide_cursor_)
 932     cursor_manager_.HideCursor();
 933   cursor_manager_.SetCursor(ui::kCursorPointer);
 934
 935 #if defined(OS_CHROMEOS)
 936   // Set accelerator controller delegates.
 937   accelerator_controller_->SetBrightnessControlDelegate(
 938       scoped_ptr<ash::BrightnessControlDelegate>(
 939           new ash::system::BrightnessControllerChromeos).Pass());
 940
 941   power_event_observer_.reset(new internal::PowerEventObserver());
 942   user_activity_notifier_.reset(
 943       new internal::UserActivityNotifier(user_activity_detector_.get()));
 944   video_activity_notifier_.reset(
 945       new internal::VideoActivityNotifier(video_detector_.get()));
 946 #endif
 947
 948   weak_display_manager_factory_.reset(
 949       new base::WeakPtrFactory<internal::DisplayManager>(
 950           display_manager_.get()));
 951   // The compositor thread and main message loop have to be running in
 952   // order to create mirror window. Run it after the main message loop
 953   // is started.
 954   base::MessageLoopForUI::current()->PostTask(
 955       FROM_HERE,
 956       base::Bind(&internal::DisplayManager::CreateMirrorWindowIfAny,
 957                  weak_display_manager_factory_->GetWeakPtr()));
 958 }
 959
 960 void Shell::InitKeyboard() {
 961   if (keyboard::IsKeyboardEnabled()) {
 962     if (keyboard_controller_.get()) {
 963       RootWindowControllerList controllers = GetAllRootWindowControllers();
 964       for (RootWindowControllerList::iterator iter = controllers.begin();
 965            iter != controllers.end(); ++iter) {
 966         (*iter)->DeactivateKeyboard(keyboard_controller_.get());
 967       }
 968     }
 969     keyboard::KeyboardControllerProxy* proxy =
 970         delegate_->CreateKeyboardControllerProxy();
 971     keyboard_controller_.reset(
 972         new keyboard::KeyboardController(proxy));
 973   }
 974 }
 975
 976 void Shell::InitRootWindow(aura::Window* root_window) {
 977   DCHECK(activation_client_);
 978   DCHECK(visibility_controller_.get());
 979   DCHECK(drag_drop_controller_.get());
 980   DCHECK(window_cycle_controller_.get());
 981
 982   aura::client::SetFocusClient(root_window, focus_client_.get());
 983   input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
 984   aura::client::SetActivationClient(root_window, activation_client_);
 985   views::corewm::FocusController* focus_controller =
 986       static_cast<views::corewm::FocusController*>(activation_client_);
 987   root_window->AddPreTargetHandler(focus_controller);
 988   aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
 989   aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
 990   aura::client::SetScreenPositionClient(root_window,
 991                                         screen_position_controller_.get());
 992   aura::client::SetCursorClient(root_window, &cursor_manager_);
 993   aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
 994   aura::client::SetEventClient(root_window, event_client_.get());
 995   aura::client::SetWindowMoveClient(root_window,
 996       toplevel_window_event_handler_.get());
 997
 998   if (nested_dispatcher_controller_) {
 999     aura::client::SetDispatcherClient(root_window,
1000                                       nested_dispatcher_controller_.get());
1001   }
1002   if (user_action_client_)
1003     aura::client::SetUserActionClient(root_window, user_action_client_.get());
1004 }
1005
1006 bool Shell::CanWindowReceiveEvents(aura::Window* window) {
1007   RootWindowControllerList controllers = GetAllRootWindowControllers();
1008   for (RootWindowControllerList::iterator iter = controllers.begin();
1009        iter != controllers.end(); ++iter) {
1010     internal::SystemModalContainerLayoutManager* layout_manager =
1011         (*iter)->GetSystemModalLayoutManager(window);
1012     if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
1013       return true;
1014   }
1015   return false;
1016 }
1017
1018 ////////////////////////////////////////////////////////////////////////////////
1019 // Shell, ui::EventTarget overrides:
1020
1021 bool Shell::CanAcceptEvent(const ui::Event& event) {
1022   return true;
1023 }
1024
1025 ui::EventTarget* Shell::GetParentTarget() {
1026   return aura::Env::GetInstance();
1027 }
1028
1029 scoped_ptr<ui::EventTargetIterator> Shell::GetChildIterator() const {
1030   return scoped_ptr<ui::EventTargetIterator>();
1031 }
1032
1033 ui::EventTargeter* Shell::GetEventTargeter() {
1034   NOTREACHED();
1035   return NULL;
1036 }
1037
1038 void Shell::OnEvent(ui::Event* event) {
1039 }
1040
1041 ////////////////////////////////////////////////////////////////////////////////
1042 // Shell, aura::client::ActivationChangeObserver implementation:
1043
1044 void Shell::OnWindowActivated(aura::Window* gained_active,
1045                               aura::Window* lost_active) {
1046   if (gained_active)
1047     target_root_window_ = gained_active->GetRootWindow();
1048 }
1049
1050 }  // namespace ash