shell.cc revision 6e8cce623b6e4fe0c9e4af605d675dd9d0338c38 
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_delegate.h"
12#include "ash/accelerators/focus_manager_factory.h"
13#include "ash/accelerators/nested_accelerator_delegate.h"
14#include "ash/accelerometer/accelerometer_controller.h"
15#include "ash/ash_switches.h"
16#include "ash/autoclick/autoclick_controller.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/cursor_window_controller.h"
21#include "ash/display/display_controller.h"
22#include "ash/display/display_manager.h"
23#include "ash/display/event_transformation_handler.h"
24#include "ash/display/mouse_cursor_event_filter.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/frame/custom_frame_view_ash.h"
31#include "ash/gpu_support.h"
32#include "ash/high_contrast/high_contrast_controller.h"
33#include "ash/host/ash_window_tree_host_init_params.h"
34#include "ash/keyboard_uma_event_filter.h"
35#include "ash/magnifier/magnification_controller.h"
36#include "ash/magnifier/partial_magnification_controller.h"
37#include "ash/media_delegate.h"
38#include "ash/new_window_delegate.h"
39#include "ash/root_window_controller.h"
40#include "ash/session/session_state_delegate.h"
41#include "ash/shelf/app_list_shelf_item_delegate.h"
42#include "ash/shelf/shelf_delegate.h"
43#include "ash/shelf/shelf_item_delegate.h"
44#include "ash/shelf/shelf_item_delegate_manager.h"
45#include "ash/shelf/shelf_layout_manager.h"
46#include "ash/shelf/shelf_model.h"
47#include "ash/shelf/shelf_widget.h"
48#include "ash/shelf/shelf_window_watcher.h"
49#include "ash/shell_delegate.h"
50#include "ash/shell_factory.h"
51#include "ash/shell_init_params.h"
52#include "ash/shell_window_ids.h"
53#include "ash/system/locale/locale_notification_controller.h"
54#include "ash/system/status_area_widget.h"
55#include "ash/system/tray/system_tray_delegate.h"
56#include "ash/system/tray/system_tray_notifier.h"
57#include "ash/wm/app_list_controller.h"
58#include "ash/wm/ash_focus_rules.h"
59#include "ash/wm/ash_native_cursor_manager.h"
60#include "ash/wm/coordinate_conversion.h"
61#include "ash/wm/event_client_impl.h"
62#include "ash/wm/lock_state_controller.h"
63#include "ash/wm/maximize_mode/maximize_mode_controller.h"
64#include "ash/wm/maximize_mode/maximize_mode_window_manager.h"
65#include "ash/wm/mru_window_tracker.h"
66#include "ash/wm/overlay_event_filter.h"
67#include "ash/wm/overview/window_selector_controller.h"
68#include "ash/wm/power_button_controller.h"
69#include "ash/wm/resize_shadow_controller.h"
70#include "ash/wm/root_window_layout_manager.h"
71#include "ash/wm/screen_dimmer.h"
72#include "ash/wm/system_gesture_event_filter.h"
73#include "ash/wm/system_modal_container_event_filter.h"
74#include "ash/wm/system_modal_container_layout_manager.h"
75#include "ash/wm/toplevel_window_event_handler.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/debug/trace_event.h"
85#include "ui/aura/client/aura_constants.h"
86#include "ui/aura/env.h"
87#include "ui/aura/layout_manager.h"
88#include "ui/aura/window.h"
89#include "ui/aura/window_event_dispatcher.h"
90#include "ui/base/ui_base_switches.h"
91#include "ui/compositor/layer.h"
92#include "ui/compositor/layer_animator.h"
93#include "ui/events/event_target_iterator.h"
94#include "ui/gfx/display.h"
95#include "ui/gfx/image/image_skia.h"
96#include "ui/gfx/screen.h"
97#include "ui/gfx/size.h"
98#include "ui/keyboard/keyboard.h"
99#include "ui/keyboard/keyboard_controller.h"
100#include "ui/keyboard/keyboard_switches.h"
101#include "ui/keyboard/keyboard_util.h"
102#include "ui/message_center/message_center.h"
103#include "ui/views/corewm/tooltip_aura.h"
104#include "ui/views/corewm/tooltip_controller.h"
105#include "ui/views/focus/focus_manager_factory.h"
106#include "ui/views/widget/native_widget_aura.h"
107#include "ui/views/widget/widget.h"
108#include "ui/wm/core/accelerator_filter.h"
109#include "ui/wm/core/compound_event_filter.h"
110#include "ui/wm/core/focus_controller.h"
111#include "ui/wm/core/input_method_event_filter.h"
112#include "ui/wm/core/nested_accelerator_controller.h"
113#include "ui/wm/core/shadow_controller.h"
114#include "ui/wm/core/user_activity_detector.h"
115#include "ui/wm/core/visibility_controller.h"
116#include "ui/wm/core/window_modality_controller.h"
117
118#if defined(OS_CHROMEOS)
119#if defined(USE_X11)
120#include "ash/accelerators/magnifier_key_scroller.h"
121#include "ash/accelerators/spoken_feedback_toggler.h"
122#include "ash/touch/touch_transformer_controller.h"
123#include "ui/gfx/x/x11_types.h"
124#endif  // defined(USE_X11)
125#include "ash/ash_constants.h"
126#include "ash/display/display_change_observer_chromeos.h"
127#include "ash/display/display_configurator_animation.h"
128#include "ash/display/display_error_observer_chromeos.h"
129#include "ash/display/projecting_observer_chromeos.h"
130#include "ash/display/resolution_notification_controller.h"
131#include "ash/sticky_keys/sticky_keys_controller.h"
132#include "ash/system/chromeos/bluetooth/bluetooth_notification_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/video_activity_notifier.h"
137#include "ash/system/chromeos/session/last_window_closed_logout_reminder.h"
138#include "ash/system/chromeos/session/logout_confirmation_controller.h"
139#include "base/bind_helpers.h"
140#include "base/sys_info.h"
141#include "ui/chromeos/user_activity_power_manager_notifier.h"
142#include "ui/display/chromeos/display_configurator.h"
143#endif  // defined(OS_CHROMEOS)
144
145namespace ash {
146
147namespace {
148
149using aura::Window;
150using views::Widget;
151
152// A Corewm VisibilityController subclass that calls the Ash animation routine
153// so we can pick up our extended animations. See ash/wm/window_animations.h.
154class AshVisibilityController : public ::wm::VisibilityController {
155 public:
156  AshVisibilityController() {}
157  virtual ~AshVisibilityController() {}
158
159 private:
160  // Overridden from ::wm::VisibilityController:
161  virtual bool CallAnimateOnChildWindowVisibilityChanged(
162      aura::Window* window,
163      bool visible) OVERRIDE {
164    return AnimateOnChildWindowVisibilityChanged(window, visible);
165  }
166
167  DISALLOW_COPY_AND_ASSIGN(AshVisibilityController);
168};
169
170AshWindowTreeHostInitParams ShellInitParamsToAshWindowTreeHostInitParams(
171    const ShellInitParams& shell_init_params) {
172  AshWindowTreeHostInitParams ash_init_params;
173#if defined(OS_WIN)
174  ash_init_params.remote_hwnd = shell_init_params.remote_hwnd;
175#endif
176  return ash_init_params;
177}
178
179}  // namespace
180
181// static
182Shell* Shell::instance_ = NULL;
183// static
184bool Shell::initially_hide_cursor_ = false;
185
186////////////////////////////////////////////////////////////////////////////////
187// Shell, public:
188
189// static
190Shell* Shell::CreateInstance(const ShellInitParams& init_params) {
191  CHECK(!instance_);
192  instance_ = new Shell(init_params.delegate);
193  instance_->Init(init_params);
194  return instance_;
195}
196
197// static
198Shell* Shell::GetInstance() {
199  DCHECK(instance_);
200  return instance_;
201}
202
203// static
204bool Shell::HasInstance() {
205  return !!instance_;
206}
207
208// static
209void Shell::DeleteInstance() {
210  delete instance_;
211  instance_ = NULL;
212}
213
214// static
215RootWindowController* Shell::GetPrimaryRootWindowController() {
216  return GetRootWindowController(GetPrimaryRootWindow());
217}
218
219// static
220Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
221  return Shell::GetInstance()->display_controller()->
222      GetAllRootWindowControllers();
223}
224
225// static
226aura::Window* Shell::GetPrimaryRootWindow() {
227  return GetInstance()->display_controller()->GetPrimaryRootWindow();
228}
229
230// static
231aura::Window* Shell::GetTargetRootWindow() {
232  Shell* shell = GetInstance();
233  if (shell->scoped_target_root_window_)
234    return shell->scoped_target_root_window_;
235  return shell->target_root_window_;
236}
237
238// static
239gfx::Screen* Shell::GetScreen() {
240  return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
241}
242
243// static
244aura::Window::Windows Shell::GetAllRootWindows() {
245  return Shell::GetInstance()->display_controller()->
246      GetAllRootWindows();
247}
248
249// static
250aura::Window* Shell::GetContainer(aura::Window* root_window,
251                                  int container_id) {
252  return root_window->GetChildById(container_id);
253}
254
255// static
256const aura::Window* Shell::GetContainer(const aura::Window* root_window,
257                                        int container_id) {
258  return root_window->GetChildById(container_id);
259}
260
261// static
262std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
263    int container_id,
264    aura::Window* priority_root) {
265  std::vector<aura::Window*> containers;
266  aura::Window::Windows root_windows = GetAllRootWindows();
267  for (aura::Window::Windows::const_iterator it = root_windows.begin();
268       it != root_windows.end(); ++it) {
269    aura::Window* container = (*it)->GetChildById(container_id);
270    if (container) {
271      if (priority_root && priority_root->Contains(container))
272        containers.insert(containers.begin(), container);
273      else
274        containers.push_back(container);
275    }
276  }
277  return containers;
278}
279
280void Shell::ShowContextMenu(const gfx::Point& location_in_screen,
281                            ui::MenuSourceType source_type) {
282  // No context menus if there is no session with an active user.
283  if (!session_state_delegate_->NumberOfLoggedInUsers())
284    return;
285  // No context menus when screen is locked.
286  if (session_state_delegate_->IsScreenLocked())
287    return;
288
289  aura::Window* root =
290      wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
291  GetRootWindowController(root)
292      ->ShowContextMenu(location_in_screen, source_type);
293}
294
295void Shell::ShowAppList(aura::Window* window) {
296  // If the context window is not given, show it on the target root window.
297  if (!window)
298    window = GetTargetRootWindow();
299  if (!app_list_controller_)
300    app_list_controller_.reset(new AppListController);
301  app_list_controller_->SetVisible(true, window);
302}
303
304void Shell::DismissAppList() {
305  if (!app_list_controller_)
306    return;
307  app_list_controller_->SetVisible(false, GetTargetRootWindow());
308}
309
310void Shell::ToggleAppList(aura::Window* window) {
311  if (GetAppListTargetVisibility()) {
312    DismissAppList();
313    return;
314  }
315
316  ShowAppList(window);
317}
318
319bool Shell::GetAppListTargetVisibility() const {
320  return app_list_controller_.get() &&
321      app_list_controller_->GetTargetVisibility();
322}
323
324aura::Window* Shell::GetAppListWindow() {
325  return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
326}
327
328app_list::AppListView* Shell::GetAppListView() {
329  return app_list_controller_.get() ? app_list_controller_->GetView() : NULL;
330}
331
332bool Shell::IsSystemModalWindowOpen() const {
333  if (simulate_modal_window_open_for_testing_)
334    return true;
335  const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
336      kShellWindowId_SystemModalContainer, NULL);
337  for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
338       cit != containers.end(); ++cit) {
339    for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
340         wit != (*cit)->children().end(); ++wit) {
341      if ((*wit)->GetProperty(aura::client::kModalKey) ==
342          ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
343        return true;
344      }
345    }
346  }
347  return false;
348}
349
350views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
351    views::Widget* widget) {
352  // Use translucent-style window frames for dialogs.
353  return new CustomFrameViewAsh(widget);
354}
355
356void Shell::RotateFocus(Direction direction) {
357  focus_cycler_->RotateFocus(direction == FORWARD ? FocusCycler::FORWARD
358                                                  : FocusCycler::BACKWARD);
359}
360
361void Shell::SetDisplayWorkAreaInsets(Window* contains,
362                                     const gfx::Insets& insets) {
363  if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
364          contains, insets)) {
365    return;
366  }
367  FOR_EACH_OBSERVER(ShellObserver, observers_,
368                    OnDisplayWorkAreaInsetsChanged());
369}
370
371void Shell::OnLoginStateChanged(user::LoginStatus status) {
372  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
373}
374
375void Shell::OnLoginUserProfilePrepared() {
376  CreateShelf();
377  CreateKeyboard();
378}
379
380void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
381  RootWindowControllerList controllers = GetAllRootWindowControllers();
382  for (RootWindowControllerList::iterator iter = controllers.begin();
383       iter != controllers.end(); ++iter)
384    (*iter)->UpdateAfterLoginStatusChange(status);
385}
386
387void Shell::OnAppTerminating() {
388  FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
389}
390
391void Shell::OnLockStateChanged(bool locked) {
392  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
393#ifndef NDEBUG
394  // Make sure that there is no system modal in Lock layer when unlocked.
395  if (!locked) {
396    std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
397        kShellWindowId_LockSystemModalContainer, GetPrimaryRootWindow());
398    for (std::vector<aura::Window*>::const_iterator iter = containers.begin();
399         iter != containers.end(); ++iter) {
400      DCHECK_EQ(0u, (*iter)->children().size());
401    }
402  }
403#endif
404}
405
406void Shell::OnCastingSessionStartedOrStopped(bool started) {
407#if defined(OS_CHROMEOS) && defined(USE_X11)
408  if (projecting_observer_)
409    projecting_observer_->OnCastingSessionStartedOrStopped(started);
410#endif
411}
412
413void Shell::OnOverviewModeStarting() {
414  FOR_EACH_OBSERVER(ShellObserver, observers_, OnOverviewModeStarting());
415}
416
417void Shell::OnOverviewModeEnding() {
418  FOR_EACH_OBSERVER(ShellObserver, observers_, OnOverviewModeEnding());
419}
420
421void Shell::OnMaximizeModeStarted() {
422  FOR_EACH_OBSERVER(ShellObserver, observers_, OnMaximizeModeStarted());
423}
424
425void Shell::OnMaximizeModeEnded() {
426  FOR_EACH_OBSERVER(ShellObserver, observers_, OnMaximizeModeEnded());
427}
428
429void Shell::OnRootWindowAdded(aura::Window* root_window) {
430  FOR_EACH_OBSERVER(ShellObserver, observers_, OnRootWindowAdded(root_window));
431}
432
433void Shell::CreateShelf() {
434  RootWindowControllerList controllers = GetAllRootWindowControllers();
435  for (RootWindowControllerList::iterator iter = controllers.begin();
436       iter != controllers.end(); ++iter)
437    (*iter)->shelf()->CreateShelf();
438}
439
440void Shell::OnShelfCreatedForRootWindow(aura::Window* root_window) {
441  FOR_EACH_OBSERVER(ShellObserver,
442                    observers_,
443                    OnShelfCreatedForRootWindow(root_window));
444}
445
446void Shell::CreateKeyboard() {
447  // TODO(bshe): Primary root window controller may not be the controller to
448  // attach virtual keyboard. See http://crbug.com/303429
449  InitKeyboard();
450  if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
451    display_controller()->virtual_keyboard_window_controller()->
452        ActivateKeyboard(keyboard::KeyboardController::GetInstance());
453  } else {
454    GetPrimaryRootWindowController()->
455        ActivateKeyboard(keyboard::KeyboardController::GetInstance());
456  }
457}
458
459void Shell::DeactivateKeyboard() {
460  if (keyboard::KeyboardController::GetInstance()) {
461    RootWindowControllerList controllers = GetAllRootWindowControllers();
462    for (RootWindowControllerList::iterator iter = controllers.begin();
463        iter != controllers.end(); ++iter) {
464      (*iter)->DeactivateKeyboard(keyboard::KeyboardController::GetInstance());
465    }
466  }
467  keyboard::KeyboardController::ResetInstance(NULL);
468}
469
470void Shell::ShowShelf() {
471  RootWindowControllerList controllers = GetAllRootWindowControllers();
472  for (RootWindowControllerList::iterator iter = controllers.begin();
473       iter != controllers.end(); ++iter)
474    (*iter)->ShowShelf();
475}
476
477void Shell::AddShellObserver(ShellObserver* observer) {
478  observers_.AddObserver(observer);
479}
480
481void Shell::RemoveShellObserver(ShellObserver* observer) {
482  observers_.RemoveObserver(observer);
483}
484
485#if defined(OS_CHROMEOS)
486bool Shell::ShouldSaveDisplaySettings() {
487  return !((maximize_mode_controller_->IsMaximizeModeWindowManagerEnabled() &&
488            maximize_mode_controller_->in_set_screen_rotation()) ||
489           resolution_notification_controller_->DoesNotificationTimeout());
490}
491#endif
492
493void Shell::UpdateShelfVisibility() {
494  RootWindowControllerList controllers = GetAllRootWindowControllers();
495  for (RootWindowControllerList::iterator iter = controllers.begin();
496       iter != controllers.end(); ++iter)
497    if ((*iter)->shelf())
498      (*iter)->UpdateShelfVisibility();
499}
500
501void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
502                                     aura::Window* root_window) {
503  ash::ShelfLayoutManager::ForShelf(root_window)->SetAutoHideBehavior(behavior);
504}
505
506ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
507    aura::Window* root_window) const {
508  return ash::ShelfLayoutManager::ForShelf(root_window)->auto_hide_behavior();
509}
510
511void Shell::SetShelfAlignment(ShelfAlignment alignment,
512                              aura::Window* root_window) {
513  if (ash::ShelfLayoutManager::ForShelf(root_window)->SetAlignment(alignment)) {
514    FOR_EACH_OBSERVER(
515        ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
516  }
517}
518
519ShelfAlignment Shell::GetShelfAlignment(const aura::Window* root_window) {
520  return GetRootWindowController(root_window)
521      ->GetShelfLayoutManager()
522      ->GetAlignment();
523}
524
525void Shell::SetDimming(bool should_dim) {
526  RootWindowControllerList controllers = GetAllRootWindowControllers();
527  for (RootWindowControllerList::iterator iter = controllers.begin();
528       iter != controllers.end(); ++iter)
529    (*iter)->screen_dimmer()->SetDimming(should_dim);
530}
531
532void Shell::NotifyFullscreenStateChange(bool is_fullscreen,
533                                        aura::Window* root_window) {
534  FOR_EACH_OBSERVER(ShellObserver, observers_, OnFullscreenStateChanged(
535      is_fullscreen, root_window));
536}
537
538void Shell::CreateModalBackground(aura::Window* window) {
539  if (!modality_filter_) {
540    modality_filter_.reset(new SystemModalContainerEventFilter(this));
541    AddPreTargetHandler(modality_filter_.get());
542  }
543  RootWindowControllerList controllers = GetAllRootWindowControllers();
544  for (RootWindowControllerList::iterator iter = controllers.begin();
545       iter != controllers.end(); ++iter)
546    (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
547}
548
549void Shell::OnModalWindowRemoved(aura::Window* removed) {
550  RootWindowControllerList controllers = GetAllRootWindowControllers();
551  bool activated = false;
552  for (RootWindowControllerList::iterator iter = controllers.begin();
553       iter != controllers.end() && !activated; ++iter) {
554    activated = (*iter)->GetSystemModalLayoutManager(removed)->
555        ActivateNextModalWindow();
556  }
557  if (!activated) {
558    RemovePreTargetHandler(modality_filter_.get());
559    modality_filter_.reset();
560    for (RootWindowControllerList::iterator iter = controllers.begin();
561         iter != controllers.end(); ++iter)
562      (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
563  }
564}
565
566WebNotificationTray* Shell::GetWebNotificationTray() {
567  return GetPrimaryRootWindowController()->shelf()->
568      status_area_widget()->web_notification_tray();
569}
570
571bool Shell::HasPrimaryStatusArea() {
572  ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
573  return shelf && shelf->status_area_widget();
574}
575
576SystemTray* Shell::GetPrimarySystemTray() {
577  return GetPrimaryRootWindowController()->GetSystemTray();
578}
579
580ShelfDelegate* Shell::GetShelfDelegate() {
581  if (!shelf_delegate_) {
582    shelf_model_.reset(new ShelfModel);
583    // Creates ShelfItemDelegateManager before ShelfDelegate.
584    shelf_item_delegate_manager_.reset(
585        new ShelfItemDelegateManager(shelf_model_.get()));
586
587    shelf_delegate_.reset(delegate_->CreateShelfDelegate(shelf_model_.get()));
588    scoped_ptr<ShelfItemDelegate> controller(new AppListShelfItemDelegate);
589
590    // Finding the shelf model's location of the app list and setting its
591    // ShelfItemDelegate.
592    int app_list_index = shelf_model_->GetItemIndexForType(TYPE_APP_LIST);
593    DCHECK_GE(app_list_index, 0);
594    ShelfID app_list_id = shelf_model_->items()[app_list_index].id;
595    DCHECK(app_list_id);
596    shelf_item_delegate_manager_->SetShelfItemDelegate(app_list_id,
597                                                       controller.Pass());
598    shelf_window_watcher_.reset(new ShelfWindowWatcher(
599        shelf_model_.get(), shelf_item_delegate_manager_.get()));
600  }
601  return shelf_delegate_.get();
602}
603
604void Shell::SetTouchHudProjectionEnabled(bool enabled) {
605  if (is_touch_hud_projection_enabled_ == enabled)
606    return;
607
608  is_touch_hud_projection_enabled_ = enabled;
609  FOR_EACH_OBSERVER(ShellObserver, observers_,
610                    OnTouchHudProjectionToggled(enabled));
611}
612
613#if defined(OS_CHROMEOS)
614ash::FirstRunHelper* Shell::CreateFirstRunHelper() {
615  return new ash::FirstRunHelperImpl;
616}
617
618void Shell::SetCursorCompositingEnabled(bool enabled) {
619  display_controller_->cursor_window_controller()->SetCursorCompositingEnabled(
620      enabled);
621  native_cursor_manager_->SetNativeCursorEnabled(!enabled);
622}
623#endif  // defined(OS_CHROMEOS)
624
625void Shell::DoInitialWorkspaceAnimation() {
626  return GetPrimaryRootWindowController()->workspace_controller()->
627      DoInitialAnimation();
628}
629
630////////////////////////////////////////////////////////////////////////////////
631// Shell, private:
632
633Shell::Shell(ShellDelegate* delegate)
634    : target_root_window_(NULL),
635      scoped_target_root_window_(NULL),
636      delegate_(delegate),
637      window_positioner_(new WindowPositioner),
638      activation_client_(NULL),
639      accelerometer_controller_(new AccelerometerController()),
640#if defined(OS_CHROMEOS)
641      display_configurator_(new ui::DisplayConfigurator()),
642#endif  // defined(OS_CHROMEOS)
643      native_cursor_manager_(new AshNativeCursorManager),
644      cursor_manager_(
645          scoped_ptr< ::wm::NativeCursorManager>(native_cursor_manager_)),
646      simulate_modal_window_open_for_testing_(false),
647      is_touch_hud_projection_enabled_(false) {
648  DCHECK(delegate_.get());
649  gpu_support_.reset(delegate_->CreateGPUSupport());
650  display_manager_.reset(new DisplayManager);
651  display_controller_.reset(new DisplayController);
652#if defined(OS_CHROMEOS) && defined(USE_X11)
653  user_metrics_recorder_.reset(new UserMetricsRecorder);
654#endif  // defined(OS_CHROMEOS)
655
656#if defined(OS_CHROMEOS)
657  PowerStatus::Initialize();
658#endif
659}
660
661Shell::~Shell() {
662  TRACE_EVENT0("shutdown", "ash::Shell::Destructor");
663
664  delegate_->PreShutdown();
665
666  views::FocusManagerFactory::Install(NULL);
667
668  // Remove the focus from any window. This will prevent overhead and side
669  // effects (e.g. crashes) from changing focus during shutdown.
670  // See bug crbug.com/134502.
671  aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
672
673  // Please keep in same order as in Init() because it's easy to miss one.
674  if (window_modality_controller_)
675    window_modality_controller_.reset();
676#if defined(OS_CHROMEOS) && defined(USE_X11)
677  RemovePreTargetHandler(magnifier_key_scroll_handler_.get());
678  magnifier_key_scroll_handler_.reset();
679
680  RemovePreTargetHandler(speech_feedback_handler_.get());
681  speech_feedback_handler_.reset();
682#endif
683  RemovePreTargetHandler(user_activity_detector_.get());
684  RemovePreTargetHandler(overlay_filter_.get());
685  RemovePreTargetHandler(input_method_filter_.get());
686  RemovePreTargetHandler(accelerator_filter_.get());
687  RemovePreTargetHandler(event_transformation_handler_.get());
688  RemovePreTargetHandler(toplevel_window_event_handler_.get());
689  RemovePostTargetHandler(toplevel_window_event_handler_.get());
690  RemovePreTargetHandler(system_gesture_filter_.get());
691  RemovePreTargetHandler(keyboard_metrics_filter_.get());
692  RemovePreTargetHandler(mouse_cursor_filter_.get());
693
694  // TooltipController is deleted with the Shell so removing its references.
695  RemovePreTargetHandler(tooltip_controller_.get());
696
697  // Destroy maximize mode controller early on since it has some observers which
698  // need to be removed.
699  maximize_mode_controller_->Shutdown();
700  maximize_mode_controller_.reset();
701
702  // AppList needs to be released before shelf layout manager, which is
703  // destroyed with shelf container in the loop below. However, app list
704  // container is now on top of shelf container and released after it.
705  // TODO(xiyuan): Move it back when app list container is no longer needed.
706  app_list_controller_.reset();
707
708#if defined(OS_CHROMEOS)
709  // Destroy the LastWindowClosedLogoutReminder before the
710  // LogoutConfirmationController.
711  last_window_closed_logout_reminder_.reset();
712
713  // Destroy the LogoutConfirmationController before the SystemTrayDelegate.
714  logout_confirmation_controller_.reset();
715#endif
716
717  // Destroy SystemTrayDelegate before destroying the status area(s).
718  system_tray_delegate_->Shutdown();
719  system_tray_delegate_.reset();
720
721  locale_notification_controller_.reset();
722
723  // Drag-and-drop must be canceled prior to close all windows.
724  drag_drop_controller_.reset();
725
726  // Controllers who have WindowObserver added must be deleted
727  // before |display_controller_| is deleted.
728
729#if defined(OS_CHROMEOS)
730  // VideoActivityNotifier must be deleted before |video_detector_| is
731  // deleted because it's observing video activity through
732  // VideoDetectorObserver interface.
733  video_activity_notifier_.reset();
734#endif  // defined(OS_CHROMEOS)
735  video_detector_.reset();
736  high_contrast_controller_.reset();
737
738  shadow_controller_.reset();
739  resize_shadow_controller_.reset();
740
741  window_cycle_controller_.reset();
742  window_selector_controller_.reset();
743  mru_window_tracker_.reset();
744
745  // |shelf_window_watcher_| has a weak pointer to |shelf_Model_|
746  // and has window observers.
747  shelf_window_watcher_.reset();
748
749  // Destroy all child windows including widgets.
750  display_controller_->CloseChildWindows();
751  display_controller_->CloseNonDesktopDisplay();
752
753  // Chrome implementation of shelf delegate depends on FocusClient,
754  // so must be deleted before |focus_client_|.
755  shelf_delegate_.reset();
756  focus_client_.reset();
757
758  // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
759  // needs to remove observers from it.
760  system_tray_notifier_.reset();
761
762  // These need a valid Shell instance to clean up properly, so explicitly
763  // delete them before invalidating the instance.
764  // Alphabetical. TODO(oshima): sort.
765  magnification_controller_.reset();
766  partial_magnification_controller_.reset();
767  tooltip_controller_.reset();
768  event_client_.reset();
769  nested_accelerator_controller_.reset();
770  toplevel_window_event_handler_.reset();
771  visibility_controller_.reset();
772  // |shelf_item_delegate_manager_| observes |shelf_model_|. It must be
773  // destroyed before |shelf_model_| is destroyed.
774  shelf_item_delegate_manager_.reset();
775  shelf_model_.reset();
776
777  power_button_controller_.reset();
778  lock_state_controller_.reset();
779
780#if defined(OS_CHROMEOS)
781  resolution_notification_controller_.reset();
782#endif
783  desktop_background_controller_.reset();
784  mouse_cursor_filter_.reset();
785
786#if defined(OS_CHROMEOS) && defined(USE_X11)
787  touch_transformer_controller_.reset();
788#endif  // defined(OS_CHROMEOS) && defined(USE_X11)
789
790  // This also deletes all RootWindows. Note that we invoke Shutdown() on
791  // DisplayController before resetting |display_controller_|, since destruction
792  // of its owned RootWindowControllers relies on the value.
793  display_manager_->CreateScreenForShutdown();
794  display_controller_->Shutdown();
795  display_controller_.reset();
796  screen_position_controller_.reset();
797  accessibility_delegate_.reset();
798  new_window_delegate_.reset();
799  media_delegate_.reset();
800
801  keyboard::KeyboardController::ResetInstance(NULL);
802
803#if defined(OS_CHROMEOS)
804  if (display_change_observer_)
805    display_configurator_->RemoveObserver(display_change_observer_.get());
806  if (display_configurator_animation_)
807    display_configurator_->RemoveObserver(
808        display_configurator_animation_.get());
809  if (display_error_observer_)
810    display_configurator_->RemoveObserver(display_error_observer_.get());
811  if (projecting_observer_)
812    display_configurator_->RemoveObserver(projecting_observer_.get());
813  display_change_observer_.reset();
814#endif  // defined(OS_CHROMEOS)
815
816#if defined(OS_CHROMEOS)
817  PowerStatus::Shutdown();
818#endif
819
820  DCHECK(instance_ == this);
821  instance_ = NULL;
822}
823
824void Shell::Init(const ShellInitParams& init_params) {
825  delegate_->PreInit();
826  if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
827    display_manager_->SetSecondDisplayMode(DisplayManager::VIRTUAL_KEYBOARD);
828  }
829  bool display_initialized = display_manager_->InitFromCommandLine();
830#if defined(OS_CHROMEOS)
831  display_configurator_->Init(!gpu_support_->IsPanelFittingDisabled());
832  display_configurator_animation_.reset(new DisplayConfiguratorAnimation());
833  display_configurator_->AddObserver(display_configurator_animation_.get());
834
835  projecting_observer_.reset(new ProjectingObserver());
836  display_configurator_->AddObserver(projecting_observer_.get());
837
838  if (!display_initialized && base::SysInfo::IsRunningOnChromeOS()) {
839    display_change_observer_.reset(new DisplayChangeObserver);
840    // Register |display_change_observer_| first so that the rest of
841    // observer gets invoked after the root windows are configured.
842    display_configurator_->AddObserver(display_change_observer_.get());
843    display_error_observer_.reset(new DisplayErrorObserver());
844    display_configurator_->AddObserver(display_error_observer_.get());
845    display_configurator_->set_state_controller(display_change_observer_.get());
846    display_configurator_->set_mirroring_controller(display_manager_.get());
847    display_configurator_->ForceInitialConfigure(
848        delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
849    display_initialized = true;
850  }
851#endif  // defined(OS_CHROMEOS)
852  if (!display_initialized)
853    display_manager_->InitDefaultDisplay();
854
855  // Install the custom factory first so that views::FocusManagers for Tray,
856  // Shelf, and WallPaper could be created by the factory.
857  views::FocusManagerFactory::Install(new AshFocusManagerFactory);
858
859  aura::Env::CreateInstance(true);
860  aura::Env::GetInstance()->set_context_factory(init_params.context_factory);
861
862  // The WindowModalityController needs to be at the front of the input event
863  // pretarget handler list to ensure that it processes input events when modal
864  // windows are active.
865  window_modality_controller_.reset(
866      new ::wm::WindowModalityController(this));
867
868  env_filter_.reset(new ::wm::CompoundEventFilter);
869  AddPreTargetHandler(env_filter_.get());
870
871  ::wm::FocusController* focus_controller =
872      new ::wm::FocusController(new wm::AshFocusRules);
873  focus_client_.reset(focus_controller);
874  activation_client_ = focus_controller;
875  activation_client_->AddObserver(this);
876  focus_cycler_.reset(new FocusCycler());
877
878  screen_position_controller_.reset(new ScreenPositionController);
879
880  display_controller_->Start();
881  display_controller_->CreatePrimaryHost(
882      ShellInitParamsToAshWindowTreeHostInitParams(init_params));
883  aura::Window* root_window = display_controller_->GetPrimaryRootWindow();
884  target_root_window_ = root_window;
885
886#if defined(OS_CHROMEOS)
887  resolution_notification_controller_.reset(
888      new ResolutionNotificationController);
889#endif
890
891  cursor_manager_.SetDisplay(GetScreen()->GetPrimaryDisplay());
892
893  nested_accelerator_controller_.reset(
894      new ::wm::NestedAcceleratorController(new NestedAcceleratorDelegate));
895  accelerator_controller_.reset(new AcceleratorController);
896  maximize_mode_controller_.reset(new MaximizeModeController());
897
898#if defined(OS_CHROMEOS) && defined(USE_X11)
899  magnifier_key_scroll_handler_ = MagnifierKeyScroller::CreateHandler().Pass();
900  AddPreTargetHandler(magnifier_key_scroll_handler_.get());
901  speech_feedback_handler_ = SpokenFeedbackToggler::CreateHandler().Pass();
902  AddPreTargetHandler(speech_feedback_handler_.get());
903#endif
904
905  // The order in which event filters are added is significant.
906
907  // wm::UserActivityDetector passes events to observers, so let them get
908  // rewritten first.
909  user_activity_detector_.reset(new ::wm::UserActivityDetector);
910  AddPreTargetHandler(user_activity_detector_.get());
911
912  overlay_filter_.reset(new OverlayEventFilter);
913  AddPreTargetHandler(overlay_filter_.get());
914  AddShellObserver(overlay_filter_.get());
915
916  input_method_filter_.reset(new ::wm::InputMethodEventFilter(
917      root_window->GetHost()->GetAcceleratedWidget()));
918  AddPreTargetHandler(input_method_filter_.get());
919
920  accelerator_filter_.reset(new ::wm::AcceleratorFilter(
921      scoped_ptr< ::wm::AcceleratorDelegate>(new AcceleratorDelegate).Pass()));
922  AddPreTargetHandler(accelerator_filter_.get());
923
924  event_transformation_handler_.reset(new EventTransformationHandler);
925  AddPreTargetHandler(event_transformation_handler_.get());
926
927  toplevel_window_event_handler_.reset(new ToplevelWindowEventHandler);
928
929  system_gesture_filter_.reset(new SystemGestureEventFilter);
930  AddPreTargetHandler(system_gesture_filter_.get());
931
932  keyboard_metrics_filter_.reset(new KeyboardUMAEventFilter);
933  AddPreTargetHandler(keyboard_metrics_filter_.get());
934
935  // The keyboard system must be initialized before the RootWindowController is
936  // created.
937#if defined(OS_CHROMEOS)
938    keyboard::InitializeKeyboard();
939#endif
940
941#if defined(OS_CHROMEOS)
942  sticky_keys_controller_.reset(new StickyKeysController);
943#endif
944
945  lock_state_controller_.reset(new LockStateController);
946  power_button_controller_.reset(new PowerButtonController(
947      lock_state_controller_.get()));
948#if defined(OS_CHROMEOS)
949  // Pass the initial display state to PowerButtonController.
950  power_button_controller_->OnDisplayModeChanged(
951      display_configurator_->cached_displays());
952#endif
953  AddShellObserver(lock_state_controller_.get());
954
955  drag_drop_controller_.reset(new DragDropController);
956  mouse_cursor_filter_.reset(new MouseCursorEventFilter());
957  PrependPreTargetHandler(mouse_cursor_filter_.get());
958
959  // Create Controllers that may need root window.
960  // TODO(oshima): Move as many controllers before creating
961  // RootWindowController as possible.
962  visibility_controller_.reset(new AshVisibilityController);
963
964  magnification_controller_.reset(
965      MagnificationController::CreateInstance());
966  mru_window_tracker_.reset(new MruWindowTracker(activation_client_));
967
968  partial_magnification_controller_.reset(
969      new PartialMagnificationController());
970
971  autoclick_controller_.reset(AutoclickController::CreateInstance());
972
973  high_contrast_controller_.reset(new HighContrastController);
974  video_detector_.reset(new VideoDetector);
975  window_selector_controller_.reset(new WindowSelectorController());
976  window_cycle_controller_.reset(new WindowCycleController());
977
978  tooltip_controller_.reset(
979      new views::corewm::TooltipController(
980          scoped_ptr<views::corewm::Tooltip>(
981              new views::corewm::TooltipAura(gfx::SCREEN_TYPE_ALTERNATE))));
982  AddPreTargetHandler(tooltip_controller_.get());
983
984  event_client_.reset(new EventClientImpl);
985
986  // This controller needs to be set before SetupManagedWindowMode.
987  desktop_background_controller_.reset(new DesktopBackgroundController());
988  user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
989
990  session_state_delegate_.reset(delegate_->CreateSessionStateDelegate());
991  accessibility_delegate_.reset(delegate_->CreateAccessibilityDelegate());
992  new_window_delegate_.reset(delegate_->CreateNewWindowDelegate());
993  media_delegate_.reset(delegate_->CreateMediaDelegate());
994
995  resize_shadow_controller_.reset(new ResizeShadowController());
996  shadow_controller_.reset(
997      new ::wm::ShadowController(activation_client_));
998
999  // Create system_tray_notifier_ before the delegate.
1000  system_tray_notifier_.reset(new ash::SystemTrayNotifier());
1001
1002  // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
1003  system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
1004  DCHECK(system_tray_delegate_.get());
1005
1006  locale_notification_controller_.reset(new LocaleNotificationController);
1007
1008  // Initialize system_tray_delegate_ after StatusAreaWidget is created.
1009  system_tray_delegate_->Initialize();
1010
1011#if defined(OS_CHROMEOS)
1012  // Create the LogoutConfirmationController after the SystemTrayDelegate.
1013  logout_confirmation_controller_.reset(new LogoutConfirmationController(
1014      base::Bind(&SystemTrayDelegate::SignOut,
1015                 base::Unretained(system_tray_delegate_.get()))));
1016#endif
1017
1018#if defined(OS_CHROMEOS) && defined(USE_X11)
1019  // Create TouchTransformerController before DisplayController::InitDisplays()
1020  // since TouchTransformerController listens on
1021  // DisplayController::Observer::OnDisplaysInitialized().
1022  touch_transformer_controller_.reset(new TouchTransformerController());
1023#endif  // defined(OS_CHROMEOS) && defined(USE_X11)
1024
1025  display_controller_->InitDisplays();
1026
1027  // It needs to be created after RootWindowController has been created
1028  // (which calls OnWindowResized has been called, otherwise the
1029  // widget will not paint when restoring after a browser crash.  Also it needs
1030  // to be created after InitSecondaryDisplays() to initialize the wallpapers in
1031  // the correct size.
1032  user_wallpaper_delegate_->InitializeWallpaper();
1033
1034  if (initially_hide_cursor_)
1035    cursor_manager_.HideCursor();
1036  cursor_manager_.SetCursor(ui::kCursorPointer);
1037
1038#if defined(OS_CHROMEOS)
1039  // Set accelerator controller delegates.
1040  accelerator_controller_->SetBrightnessControlDelegate(
1041      scoped_ptr<ash::BrightnessControlDelegate>(
1042          new ash::system::BrightnessControllerChromeos).Pass());
1043
1044  power_event_observer_.reset(new PowerEventObserver());
1045  user_activity_notifier_.reset(
1046      new ui::UserActivityPowerManagerNotifier(user_activity_detector_.get()));
1047  video_activity_notifier_.reset(
1048      new VideoActivityNotifier(video_detector_.get()));
1049  bluetooth_notification_controller_.reset(new BluetoothNotificationController);
1050  last_window_closed_logout_reminder_.reset(new LastWindowClosedLogoutReminder);
1051#endif
1052
1053  weak_display_manager_factory_.reset(
1054      new base::WeakPtrFactory<DisplayManager>(display_manager_.get()));
1055  // The compositor thread and main message loop have to be running in
1056  // order to create mirror window. Run it after the main message loop
1057  // is started.
1058  base::MessageLoopForUI::current()->PostTask(
1059      FROM_HERE,
1060      base::Bind(&DisplayManager::CreateMirrorWindowIfAny,
1061                 weak_display_manager_factory_->GetWeakPtr()));
1062}
1063
1064void Shell::InitKeyboard() {
1065  if (keyboard::IsKeyboardEnabled()) {
1066    if (keyboard::KeyboardController::GetInstance()) {
1067      RootWindowControllerList controllers = GetAllRootWindowControllers();
1068      for (RootWindowControllerList::iterator iter = controllers.begin();
1069           iter != controllers.end(); ++iter) {
1070        (*iter)->DeactivateKeyboard(
1071            keyboard::KeyboardController::GetInstance());
1072      }
1073    }
1074    keyboard::KeyboardControllerProxy* proxy =
1075        delegate_->CreateKeyboardControllerProxy();
1076    keyboard::KeyboardController::ResetInstance(
1077        new keyboard::KeyboardController(proxy));
1078  }
1079}
1080
1081void Shell::InitRootWindow(aura::Window* root_window) {
1082  DCHECK(activation_client_);
1083  DCHECK(visibility_controller_.get());
1084  DCHECK(drag_drop_controller_.get());
1085
1086  aura::client::SetFocusClient(root_window, focus_client_.get());
1087  input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
1088  aura::client::SetActivationClient(root_window, activation_client_);
1089  ::wm::FocusController* focus_controller =
1090      static_cast< ::wm::FocusController*>(activation_client_);
1091  root_window->AddPreTargetHandler(focus_controller);
1092  aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
1093  aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
1094  aura::client::SetScreenPositionClient(root_window,
1095                                        screen_position_controller_.get());
1096  aura::client::SetCursorClient(root_window, &cursor_manager_);
1097  aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
1098  aura::client::SetEventClient(root_window, event_client_.get());
1099
1100  aura::client::SetWindowMoveClient(root_window,
1101      toplevel_window_event_handler_.get());
1102  root_window->AddPreTargetHandler(toplevel_window_event_handler_.get());
1103  root_window->AddPostTargetHandler(toplevel_window_event_handler_.get());
1104
1105  if (nested_accelerator_controller_) {
1106    aura::client::SetDispatcherClient(root_window,
1107                                      nested_accelerator_controller_.get());
1108  }
1109}
1110
1111bool Shell::CanWindowReceiveEvents(aura::Window* window) {
1112  RootWindowControllerList controllers = GetAllRootWindowControllers();
1113  for (RootWindowControllerList::iterator iter = controllers.begin();
1114       iter != controllers.end(); ++iter) {
1115    SystemModalContainerLayoutManager* layout_manager =
1116        (*iter)->GetSystemModalLayoutManager(window);
1117    if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
1118      return true;
1119    // Allow events to fall through to the virtual keyboard even if displaying
1120    // a system modal dialog.
1121    if ((*iter)->IsVirtualKeyboardWindow(window))
1122      return true;
1123  }
1124
1125  return false;
1126}
1127
1128////////////////////////////////////////////////////////////////////////////////
1129// Shell, ui::EventTarget overrides:
1130
1131bool Shell::CanAcceptEvent(const ui::Event& event) {
1132  return true;
1133}
1134
1135ui::EventTarget* Shell::GetParentTarget() {
1136  return aura::Env::GetInstance();
1137}
1138
1139scoped_ptr<ui::EventTargetIterator> Shell::GetChildIterator() const {
1140  return scoped_ptr<ui::EventTargetIterator>();
1141}
1142
1143ui::EventTargeter* Shell::GetEventTargeter() {
1144  NOTREACHED();
1145  return NULL;
1146}
1147
1148void Shell::OnEvent(ui::Event* event) {
1149}
1150
1151////////////////////////////////////////////////////////////////////////////////
1152// Shell, aura::client::ActivationChangeObserver implementation:
1153
1154void Shell::OnWindowActivated(aura::Window* gained_active,
1155                              aura::Window* lost_active) {
1156  if (gained_active)
1157    target_root_window_ = gained_active->GetRootWindow();
1158}
1159
1160}  // namespace ash
1161