shell.cc revision effb81e5f8246d0db0270817048dc992db66e9fb 
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/desktop_background/desktop_background_controller.h"
17#include "ash/desktop_background/desktop_background_view.h"
18#include "ash/desktop_background/user_wallpaper_delegate.h"
19#include "ash/display/cursor_window_controller.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/screen_position_controller.h"
25#include "ash/display/virtual_keyboard_window_controller.h"
26#include "ash/drag_drop/drag_drop_controller.h"
27#include "ash/first_run/first_run_helper_impl.h"
28#include "ash/focus_cycler.h"
29#include "ash/frame/custom_frame_view_ash.h"
30#include "ash/gpu_support.h"
31#include "ash/high_contrast/high_contrast_controller.h"
32#include "ash/host/window_tree_host_factory.h"
33#include "ash/keyboard_uma_event_filter.h"
34#include "ash/magnifier/magnification_controller.h"
35#include "ash/magnifier/partial_magnification_controller.h"
36#include "ash/media_delegate.h"
37#include "ash/new_window_delegate.h"
38#include "ash/root_window_controller.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/coordinate_conversion.h"
59#include "ash/wm/event_client_impl.h"
60#include "ash/wm/lock_state_controller.h"
61#include "ash/wm/maximize_mode/maximize_mode_window_manager.h"
62#include "ash/wm/mru_window_tracker.h"
63#include "ash/wm/overlay_event_filter.h"
64#include "ash/wm/overview/window_selector_controller.h"
65#include "ash/wm/power_button_controller.h"
66#include "ash/wm/resize_shadow_controller.h"
67#include "ash/wm/root_window_layout_manager.h"
68#include "ash/wm/screen_dimmer.h"
69#include "ash/wm/system_gesture_event_filter.h"
70#include "ash/wm/system_modal_container_event_filter.h"
71#include "ash/wm/system_modal_container_layout_manager.h"
72#include "ash/wm/toplevel_window_event_handler.h"
73#include "ash/wm/user_activity_detector.h"
74#include "ash/wm/video_detector.h"
75#include "ash/wm/window_animations.h"
76#include "ash/wm/window_positioner.h"
77#include "ash/wm/window_properties.h"
78#include "ash/wm/window_util.h"
79#include "ash/wm/workspace_controller.h"
80#include "base/bind.h"
81#include "base/debug/trace_event.h"
82#include "ui/aura/client/aura_constants.h"
83#include "ui/aura/env.h"
84#include "ui/aura/layout_manager.h"
85#include "ui/aura/window.h"
86#include "ui/aura/window_event_dispatcher.h"
87#include "ui/base/ui_base_switches.h"
88#include "ui/compositor/layer.h"
89#include "ui/compositor/layer_animator.h"
90#include "ui/events/event_target_iterator.h"
91#include "ui/gfx/display.h"
92#include "ui/gfx/image/image_skia.h"
93#include "ui/gfx/screen.h"
94#include "ui/gfx/size.h"
95#include "ui/keyboard/keyboard.h"
96#include "ui/keyboard/keyboard_controller.h"
97#include "ui/keyboard/keyboard_switches.h"
98#include "ui/keyboard/keyboard_util.h"
99#include "ui/message_center/message_center.h"
100#include "ui/views/corewm/tooltip_aura.h"
101#include "ui/views/corewm/tooltip_controller.h"
102#include "ui/views/focus/focus_manager_factory.h"
103#include "ui/views/widget/native_widget_aura.h"
104#include "ui/views/widget/widget.h"
105#include "ui/wm/core/compound_event_filter.h"
106#include "ui/wm/core/focus_controller.h"
107#include "ui/wm/core/input_method_event_filter.h"
108#include "ui/wm/core/shadow_controller.h"
109#include "ui/wm/core/visibility_controller.h"
110#include "ui/wm/core/window_modality_controller.h"
111
112#if defined(OS_CHROMEOS)
113#if defined(USE_X11)
114#include "ash/accelerators/magnifier_key_scroller.h"
115#include "ash/accelerators/spoken_feedback_toggler.h"
116#include "base/message_loop/message_pump_x11.h"
117#endif  // defined(USE_X11)
118#include "ash/ash_constants.h"
119#include "ash/display/display_change_observer_chromeos.h"
120#include "ash/display/display_error_observer_chromeos.h"
121#include "ash/display/output_configurator_animation.h"
122#include "ash/display/projecting_observer_chromeos.h"
123#include "ash/display/resolution_notification_controller.h"
124#include "ash/sticky_keys/sticky_keys_controller.h"
125#include "ash/system/chromeos/bluetooth/bluetooth_notification_controller.h"
126#include "ash/system/chromeos/brightness/brightness_controller_chromeos.h"
127#include "ash/system/chromeos/power/power_event_observer.h"
128#include "ash/system/chromeos/power/power_status.h"
129#include "ash/system/chromeos/power/user_activity_notifier.h"
130#include "ash/system/chromeos/power/video_activity_notifier.h"
131#include "ash/system/chromeos/session/last_window_closed_logout_reminder.h"
132#include "ash/system/chromeos/session/logout_confirmation_controller.h"
133#include "base/bind_helpers.h"
134#include "base/sys_info.h"
135#include "ui/display/chromeos/output_configurator.h"
136#endif  // defined(OS_CHROMEOS)
137
138namespace ash {
139
140namespace {
141
142using aura::Window;
143using views::Widget;
144
145// A Corewm VisibilityController subclass that calls the Ash animation routine
146// so we can pick up our extended animations. See ash/wm/window_animations.h.
147class AshVisibilityController : public ::wm::VisibilityController {
148 public:
149  AshVisibilityController() {}
150  virtual ~AshVisibilityController() {}
151
152 private:
153  // Overridden from ::wm::VisibilityController:
154  virtual bool CallAnimateOnChildWindowVisibilityChanged(
155      aura::Window* window,
156      bool visible) OVERRIDE {
157    return AnimateOnChildWindowVisibilityChanged(window, visible);
158  }
159
160  DISALLOW_COPY_AND_ASSIGN(AshVisibilityController);
161};
162
163}  // namespace
164
165// static
166Shell* Shell::instance_ = NULL;
167// static
168bool Shell::initially_hide_cursor_ = false;
169
170////////////////////////////////////////////////////////////////////////////////
171// Shell, public:
172
173// static
174Shell* Shell::CreateInstance(ShellDelegate* delegate) {
175  CHECK(!instance_);
176  instance_ = new Shell(delegate);
177  instance_->Init();
178  return instance_;
179}
180
181// static
182Shell* Shell::GetInstance() {
183  DCHECK(instance_);
184  return instance_;
185}
186
187// static
188bool Shell::HasInstance() {
189  return !!instance_;
190}
191
192// static
193void Shell::DeleteInstance() {
194  delete instance_;
195  instance_ = NULL;
196}
197
198// static
199internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
200  return internal::GetRootWindowController(GetPrimaryRootWindow());
201}
202
203// static
204Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
205  return Shell::GetInstance()->display_controller()->
206      GetAllRootWindowControllers();
207}
208
209// static
210aura::Window* Shell::GetPrimaryRootWindow() {
211  return GetInstance()->display_controller()->GetPrimaryRootWindow();
212}
213
214// static
215aura::Window* Shell::GetTargetRootWindow() {
216  Shell* shell = GetInstance();
217  if (shell->scoped_target_root_window_)
218    return shell->scoped_target_root_window_;
219  return shell->target_root_window_;
220}
221
222// static
223gfx::Screen* Shell::GetScreen() {
224  return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
225}
226
227// static
228aura::Window::Windows Shell::GetAllRootWindows() {
229  return Shell::GetInstance()->display_controller()->
230      GetAllRootWindows();
231}
232
233// static
234aura::Window* Shell::GetContainer(aura::Window* root_window,
235                                  int container_id) {
236  return root_window->GetChildById(container_id);
237}
238
239// static
240const aura::Window* Shell::GetContainer(const aura::Window* root_window,
241                                        int container_id) {
242  return root_window->GetChildById(container_id);
243}
244
245// static
246std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
247    int container_id,
248    aura::Window* priority_root) {
249  std::vector<aura::Window*> containers;
250  aura::Window::Windows root_windows = GetAllRootWindows();
251  for (aura::Window::Windows::const_iterator it = root_windows.begin();
252       it != root_windows.end(); ++it) {
253    aura::Window* container = (*it)->GetChildById(container_id);
254    if (container) {
255      if (priority_root && priority_root->Contains(container))
256        containers.insert(containers.begin(), container);
257      else
258        containers.push_back(container);
259    }
260  }
261  return containers;
262}
263
264void Shell::ShowContextMenu(const gfx::Point& location_in_screen,
265                            ui::MenuSourceType source_type) {
266  // No context menus if there is no session with an active user.
267  if (!session_state_delegate_->NumberOfLoggedInUsers())
268    return;
269  // No context menus when screen is locked.
270  if (session_state_delegate_->IsScreenLocked())
271    return;
272
273  aura::Window* root =
274      wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
275  internal::GetRootWindowController(root)->
276      ShowContextMenu(location_in_screen, source_type);
277}
278
279void Shell::ToggleAppList(aura::Window* window) {
280  // If the context window is not given, show it on the target root window.
281  if (!window)
282    window = GetTargetRootWindow();
283  if (!app_list_controller_)
284    app_list_controller_.reset(new internal::AppListController);
285  app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
286}
287
288bool Shell::GetAppListTargetVisibility() const {
289  return app_list_controller_.get() &&
290      app_list_controller_->GetTargetVisibility();
291}
292
293aura::Window* Shell::GetAppListWindow() {
294  return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
295}
296
297app_list::AppListView* Shell::GetAppListView() {
298  return app_list_controller_.get() ? app_list_controller_->GetView() : NULL;
299}
300
301bool Shell::IsSystemModalWindowOpen() const {
302  if (simulate_modal_window_open_for_testing_)
303    return true;
304  const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
305      internal::kShellWindowId_SystemModalContainer, NULL);
306  for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
307       cit != containers.end(); ++cit) {
308    for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
309         wit != (*cit)->children().end(); ++wit) {
310      if ((*wit)->GetProperty(aura::client::kModalKey) ==
311          ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
312        return true;
313      }
314    }
315  }
316  return false;
317}
318
319views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
320    views::Widget* widget) {
321  // Use translucent-style window frames for dialogs.
322  return new CustomFrameViewAsh(widget);
323}
324
325void Shell::RotateFocus(Direction direction) {
326  focus_cycler_->RotateFocus(
327      direction == FORWARD ? internal::FocusCycler::FORWARD :
328                             internal::FocusCycler::BACKWARD);
329}
330
331void Shell::SetDisplayWorkAreaInsets(Window* contains,
332                                     const gfx::Insets& insets) {
333  if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
334          contains, insets)) {
335    return;
336  }
337  FOR_EACH_OBSERVER(ShellObserver, observers_,
338                    OnDisplayWorkAreaInsetsChanged());
339}
340
341void Shell::OnLoginStateChanged(user::LoginStatus status) {
342  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
343}
344
345void Shell::OnLoginUserProfilePrepared() {
346  CreateShelf();
347  CreateKeyboard();
348}
349
350void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
351  RootWindowControllerList controllers = GetAllRootWindowControllers();
352  for (RootWindowControllerList::iterator iter = controllers.begin();
353       iter != controllers.end(); ++iter)
354    (*iter)->UpdateAfterLoginStatusChange(status);
355}
356
357void Shell::OnAppTerminating() {
358  FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
359}
360
361void Shell::OnLockStateChanged(bool locked) {
362  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
363#ifndef NDEBUG
364  // Make sure that there is no system modal in Lock layer when unlocked.
365  if (!locked) {
366    std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
367        internal::kShellWindowId_LockSystemModalContainer,
368        GetPrimaryRootWindow());
369    for (std::vector<aura::Window*>::const_iterator iter = containers.begin();
370         iter != containers.end(); ++iter) {
371      DCHECK_EQ(0u, (*iter)->children().size());
372    }
373  }
374#endif
375}
376
377void Shell::OnCastingSessionStartedOrStopped(bool started) {
378#if defined(OS_CHROMEOS) && defined(USE_X11)
379  if (projecting_observer_)
380    projecting_observer_->OnCastingSessionStartedOrStopped(started);
381#endif
382}
383
384void Shell::OnOverviewModeStarting() {
385  FOR_EACH_OBSERVER(ShellObserver, observers_, OnOverviewModeStarting());
386}
387
388void Shell::OnOverviewModeEnding() {
389  FOR_EACH_OBSERVER(ShellObserver, observers_, OnOverviewModeEnding());
390}
391
392void Shell::OnMaximizeModeStarted() {
393  FOR_EACH_OBSERVER(ShellObserver, observers_, OnMaximizeModeStarted());
394}
395
396void Shell::OnMaximizeModeEnded() {
397  FOR_EACH_OBSERVER(ShellObserver, observers_, OnMaximizeModeEnded());
398}
399
400void Shell::CreateShelf() {
401  RootWindowControllerList controllers = GetAllRootWindowControllers();
402  for (RootWindowControllerList::iterator iter = controllers.begin();
403       iter != controllers.end(); ++iter)
404    (*iter)->shelf()->CreateShelf();
405}
406
407void Shell::CreateKeyboard() {
408  // TODO(bshe): Primary root window controller may not be the controller to
409  // attach virtual keyboard. See http://crbug.com/303429
410  InitKeyboard();
411  if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
412    display_controller()->virtual_keyboard_window_controller()->
413        ActivateKeyboard(keyboard_controller_.get());
414  } else {
415    GetPrimaryRootWindowController()->
416        ActivateKeyboard(keyboard_controller_.get());
417  }
418}
419
420void Shell::DeactivateKeyboard() {
421  if (keyboard_controller_.get()) {
422    RootWindowControllerList controllers = GetAllRootWindowControllers();
423    for (RootWindowControllerList::iterator iter = controllers.begin();
424        iter != controllers.end(); ++iter) {
425      (*iter)->DeactivateKeyboard(keyboard_controller_.get());
426    }
427  }
428  keyboard_controller_.reset();
429}
430
431void Shell::ShowShelf() {
432  RootWindowControllerList controllers = GetAllRootWindowControllers();
433  for (RootWindowControllerList::iterator iter = controllers.begin();
434       iter != controllers.end(); ++iter)
435    (*iter)->ShowShelf();
436}
437
438void Shell::AddShellObserver(ShellObserver* observer) {
439  observers_.AddObserver(observer);
440}
441
442void Shell::RemoveShellObserver(ShellObserver* observer) {
443  observers_.RemoveObserver(observer);
444}
445
446void Shell::EnableMaximizeModeWindowManager(bool enable) {
447  if (enable && !maximize_mode_window_manager_.get()) {
448    maximize_mode_window_manager_.reset(
449        new internal::MaximizeModeWindowManager());
450  } else if (!enable && maximize_mode_window_manager_.get()) {
451    maximize_mode_window_manager_.reset();
452  }
453}
454
455bool Shell::IsMaximizeModeWindowManagerEnabled() {
456  return maximize_mode_window_manager_.get() != NULL;
457}
458
459void Shell::UpdateShelfVisibility() {
460  RootWindowControllerList controllers = GetAllRootWindowControllers();
461  for (RootWindowControllerList::iterator iter = controllers.begin();
462       iter != controllers.end(); ++iter)
463    if ((*iter)->shelf())
464      (*iter)->UpdateShelfVisibility();
465}
466
467void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
468                                     aura::Window* root_window) {
469  ash::internal::ShelfLayoutManager::ForShelf(root_window)->
470      SetAutoHideBehavior(behavior);
471}
472
473ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
474    aura::Window* root_window) const {
475  return ash::internal::ShelfLayoutManager::ForShelf(root_window)->
476      auto_hide_behavior();
477}
478
479void Shell::SetShelfAlignment(ShelfAlignment alignment,
480                              aura::Window* root_window) {
481  if (ash::internal::ShelfLayoutManager::ForShelf(root_window)->
482      SetAlignment(alignment)) {
483    FOR_EACH_OBSERVER(
484        ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
485  }
486}
487
488ShelfAlignment Shell::GetShelfAlignment(aura::Window* root_window) {
489  return internal::GetRootWindowController(root_window)->
490      GetShelfLayoutManager()->GetAlignment();
491}
492
493void Shell::SetDimming(bool should_dim) {
494  RootWindowControllerList controllers = GetAllRootWindowControllers();
495  for (RootWindowControllerList::iterator iter = controllers.begin();
496       iter != controllers.end(); ++iter)
497    (*iter)->screen_dimmer()->SetDimming(should_dim);
498}
499
500void Shell::NotifyFullscreenStateChange(bool is_fullscreen,
501                                        aura::Window* root_window) {
502  FOR_EACH_OBSERVER(ShellObserver, observers_, OnFullscreenStateChanged(
503      is_fullscreen, root_window));
504}
505
506void Shell::CreateModalBackground(aura::Window* window) {
507  if (!modality_filter_) {
508    modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
509    AddPreTargetHandler(modality_filter_.get());
510  }
511  RootWindowControllerList controllers = GetAllRootWindowControllers();
512  for (RootWindowControllerList::iterator iter = controllers.begin();
513       iter != controllers.end(); ++iter)
514    (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
515}
516
517void Shell::OnModalWindowRemoved(aura::Window* removed) {
518  RootWindowControllerList controllers = GetAllRootWindowControllers();
519  bool activated = false;
520  for (RootWindowControllerList::iterator iter = controllers.begin();
521       iter != controllers.end() && !activated; ++iter) {
522    activated = (*iter)->GetSystemModalLayoutManager(removed)->
523        ActivateNextModalWindow();
524  }
525  if (!activated) {
526    RemovePreTargetHandler(modality_filter_.get());
527    modality_filter_.reset();
528    for (RootWindowControllerList::iterator iter = controllers.begin();
529         iter != controllers.end(); ++iter)
530      (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
531  }
532}
533
534WebNotificationTray* Shell::GetWebNotificationTray() {
535  return GetPrimaryRootWindowController()->shelf()->
536      status_area_widget()->web_notification_tray();
537}
538
539bool Shell::HasPrimaryStatusArea() {
540  ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
541  return shelf && shelf->status_area_widget();
542}
543
544SystemTray* Shell::GetPrimarySystemTray() {
545  return GetPrimaryRootWindowController()->GetSystemTray();
546}
547
548ShelfDelegate* Shell::GetShelfDelegate() {
549  if (!shelf_delegate_) {
550    shelf_model_.reset(new ShelfModel);
551    // Creates ShelfItemDelegateManager before ShelfDelegate.
552    shelf_item_delegate_manager_.reset(
553        new ShelfItemDelegateManager(shelf_model_.get()));
554
555    shelf_delegate_.reset(delegate_->CreateShelfDelegate(shelf_model_.get()));
556    scoped_ptr<ShelfItemDelegate> controller(
557        new internal::AppListShelfItemDelegate);
558
559    // Finding the shelf model's location of the app list and setting its
560    // ShelfItemDelegate.
561    int app_list_index = shelf_model_->GetItemIndexForType(TYPE_APP_LIST);
562    DCHECK_GE(app_list_index, 0);
563    ShelfID app_list_id = shelf_model_->items()[app_list_index].id;
564    DCHECK(app_list_id);
565    shelf_item_delegate_manager_->SetShelfItemDelegate(app_list_id,
566                                                       controller.Pass());
567    shelf_window_watcher_.reset(new internal::ShelfWindowWatcher(
568                                        shelf_model_.get(),
569                                        shelf_item_delegate_manager_.get()));
570  }
571  return shelf_delegate_.get();
572}
573
574void Shell::SetTouchHudProjectionEnabled(bool enabled) {
575  if (is_touch_hud_projection_enabled_ == enabled)
576    return;
577
578  is_touch_hud_projection_enabled_ = enabled;
579  FOR_EACH_OBSERVER(ShellObserver, observers_,
580                    OnTouchHudProjectionToggled(enabled));
581}
582
583#if defined(OS_CHROMEOS)
584ash::FirstRunHelper* Shell::CreateFirstRunHelper() {
585  return new ash::FirstRunHelperImpl;
586}
587
588void Shell::SetCursorCompositingEnabled(bool enabled) {
589  display_controller_->cursor_window_controller()->SetCursorCompositingEnabled(
590      enabled);
591  native_cursor_manager_->SetNativeCursorEnabled(!enabled);
592}
593#endif  // defined(OS_CHROMEOS)
594
595void Shell::DoInitialWorkspaceAnimation() {
596  return GetPrimaryRootWindowController()->workspace_controller()->
597      DoInitialAnimation();
598}
599
600////////////////////////////////////////////////////////////////////////////////
601// Shell, private:
602
603Shell::Shell(ShellDelegate* delegate)
604    : target_root_window_(NULL),
605      scoped_target_root_window_(NULL),
606      delegate_(delegate),
607      window_positioner_(new WindowPositioner),
608      activation_client_(NULL),
609#if defined(OS_CHROMEOS)
610      output_configurator_(new ui::OutputConfigurator()),
611#endif  // defined(OS_CHROMEOS)
612      native_cursor_manager_(new AshNativeCursorManager),
613      cursor_manager_(
614          scoped_ptr< ::wm::NativeCursorManager>(native_cursor_manager_)),
615      simulate_modal_window_open_for_testing_(false),
616      is_touch_hud_projection_enabled_(false) {
617  DCHECK(delegate_.get());
618  gpu_support_.reset(delegate_->CreateGPUSupport());
619  display_manager_.reset(new internal::DisplayManager);
620  display_controller_.reset(new DisplayController);
621#if defined(OS_CHROMEOS) && defined(USE_X11)
622  user_metrics_recorder_.reset(new UserMetricsRecorder);
623#endif  // defined(OS_CHROMEOS)
624
625#if defined(OS_CHROMEOS)
626  internal::PowerStatus::Initialize();
627#endif
628}
629
630Shell::~Shell() {
631  TRACE_EVENT0("shutdown", "ash::Shell::Destructor");
632
633  delegate_->PreShutdown();
634
635  views::FocusManagerFactory::Install(NULL);
636
637  // Remove the focus from any window. This will prevent overhead and side
638  // effects (e.g. crashes) from changing focus during shutdown.
639  // See bug crbug.com/134502.
640  aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
641
642  // Please keep in same order as in Init() because it's easy to miss one.
643  if (window_modality_controller_)
644    window_modality_controller_.reset();
645#if defined(OS_CHROMEOS) && defined(USE_X11)
646  RemovePreTargetHandler(magnifier_key_scroll_handler_.get());
647  magnifier_key_scroll_handler_.reset();
648
649  RemovePreTargetHandler(speech_feedback_handler_.get());
650  speech_feedback_handler_.reset();
651#endif
652  RemovePreTargetHandler(user_activity_detector_.get());
653  RemovePreTargetHandler(overlay_filter_.get());
654  RemovePreTargetHandler(input_method_filter_.get());
655  RemovePreTargetHandler(accelerator_filter_.get());
656  RemovePreTargetHandler(event_transformation_handler_.get());
657  RemovePreTargetHandler(toplevel_window_event_handler_.get());
658  RemovePostTargetHandler(toplevel_window_event_handler_.get());
659  RemovePreTargetHandler(system_gesture_filter_.get());
660  RemovePreTargetHandler(keyboard_metrics_filter_.get());
661  if (mouse_cursor_filter_)
662    RemovePreTargetHandler(mouse_cursor_filter_.get());
663
664  // TooltipController is deleted with the Shell so removing its references.
665  RemovePreTargetHandler(tooltip_controller_.get());
666
667  // Destroy maximize window manager early on since it has some observers which
668  // need to be removed.
669  maximize_mode_window_manager_.reset();
670
671  // AppList needs to be released before shelf layout manager, which is
672  // destroyed with shelf container in the loop below. However, app list
673  // container is now on top of shelf container and released after it.
674  // TODO(xiyuan): Move it back when app list container is no longer needed.
675  app_list_controller_.reset();
676
677#if defined(OS_CHROMEOS)
678  // Destroy the LastWindowClosedLogoutReminder before the
679  // LogoutConfirmationController.
680  last_window_closed_logout_reminder_.reset();
681
682  // Destroy the LogoutConfirmationController before the SystemTrayDelegate.
683  logout_confirmation_controller_.reset();
684#endif
685
686  // Destroy SystemTrayDelegate before destroying the status area(s).
687  system_tray_delegate_->Shutdown();
688  system_tray_delegate_.reset();
689
690  locale_notification_controller_.reset();
691
692  // Drag-and-drop must be canceled prior to close all windows.
693  drag_drop_controller_.reset();
694
695  // Controllers who have WindowObserver added must be deleted
696  // before |display_controller_| is deleted.
697
698#if defined(OS_CHROMEOS)
699  // VideoActivityNotifier must be deleted before |video_detector_| is
700  // deleted because it's observing video activity through
701  // VideoDetectorObserver interface.
702  video_activity_notifier_.reset();
703#endif  // defined(OS_CHROMEOS)
704  video_detector_.reset();
705
706  shadow_controller_.reset();
707  resize_shadow_controller_.reset();
708
709  window_selector_controller_.reset();
710  mru_window_tracker_.reset();
711
712  // |shelf_window_watcher_| has a weak pointer to |shelf_Model_|
713  // and has window observers.
714  shelf_window_watcher_.reset();
715
716  // Destroy all child windows including widgets.
717  display_controller_->CloseChildWindows();
718  display_controller_->CloseNonDesktopDisplay();
719
720  // Chrome implementation of shelf delegate depends on FocusClient,
721  // so must be deleted before |focus_client_|.
722  shelf_delegate_.reset();
723  focus_client_.reset();
724
725  // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
726  // needs to remove observers from it.
727  system_tray_notifier_.reset();
728
729  // These need a valid Shell instance to clean up properly, so explicitly
730  // delete them before invalidating the instance.
731  // Alphabetical. TODO(oshima): sort.
732  magnification_controller_.reset();
733  partial_magnification_controller_.reset();
734  tooltip_controller_.reset();
735  event_client_.reset();
736  nested_dispatcher_controller_.reset();
737  toplevel_window_event_handler_.reset();
738  visibility_controller_.reset();
739  // |shelf_item_delegate_manager_| observes |shelf_model_|. It must be
740  // destroyed before |shelf_model_| is destroyed.
741  shelf_item_delegate_manager_.reset();
742  shelf_model_.reset();
743
744  power_button_controller_.reset();
745  lock_state_controller_.reset();
746
747#if defined(OS_CHROMEOS)
748  resolution_notification_controller_.reset();
749#endif
750  desktop_background_controller_.reset();
751
752  // This also deletes all RootWindows. Note that we invoke Shutdown() on
753  // DisplayController before resetting |display_controller_|, since destruction
754  // of its owned RootWindowControllers relies on the value.
755  display_manager_->CreateScreenForShutdown();
756  display_controller_->Shutdown();
757  display_controller_.reset();
758  screen_position_controller_.reset();
759
760  keyboard_controller_.reset();
761  accessibility_delegate_.reset();
762  new_window_delegate_.reset();
763  media_delegate_.reset();
764
765#if defined(OS_CHROMEOS)
766  if (display_change_observer_)
767    output_configurator_->RemoveObserver(display_change_observer_.get());
768  if (output_configurator_animation_)
769    output_configurator_->RemoveObserver(output_configurator_animation_.get());
770  if (display_error_observer_)
771    output_configurator_->RemoveObserver(display_error_observer_.get());
772  if (projecting_observer_)
773    output_configurator_->RemoveObserver(projecting_observer_.get());
774  display_change_observer_.reset();
775#endif  // defined(OS_CHROMEOS)
776
777#if defined(OS_CHROMEOS)
778  internal::PowerStatus::Shutdown();
779#endif
780
781  DCHECK(instance_ == this);
782  instance_ = NULL;
783}
784
785void Shell::Init() {
786  delegate_->PreInit();
787  if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
788    display_manager_->SetSecondDisplayMode(
789        internal::DisplayManager::VIRTUAL_KEYBOARD);
790  }
791  bool display_initialized = display_manager_->InitFromCommandLine();
792#if defined(OS_CHROMEOS)
793  output_configurator_->Init(!gpu_support_->IsPanelFittingDisabled());
794  output_configurator_animation_.reset(
795      new internal::OutputConfiguratorAnimation());
796  output_configurator_->AddObserver(output_configurator_animation_.get());
797
798  projecting_observer_.reset(new internal::ProjectingObserver());
799  output_configurator_->AddObserver(projecting_observer_.get());
800
801  if (!display_initialized && base::SysInfo::IsRunningOnChromeOS()) {
802    display_change_observer_.reset(new internal::DisplayChangeObserver);
803    // Register |display_change_observer_| first so that the rest of
804    // observer gets invoked after the root windows are configured.
805    output_configurator_->AddObserver(display_change_observer_.get());
806    display_error_observer_.reset(new internal::DisplayErrorObserver());
807    output_configurator_->AddObserver(display_error_observer_.get());
808    output_configurator_->set_state_controller(display_change_observer_.get());
809    output_configurator_->set_mirroring_controller(display_manager_.get());
810    output_configurator_->ForceInitialConfigure(
811        delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
812    display_initialized = true;
813  }
814#endif  // defined(OS_CHROMEOS)
815  if (!display_initialized)
816    display_manager_->InitDefaultDisplay();
817
818  // Install the custom factory first so that views::FocusManagers for Tray,
819  // Shelf, and WallPaper could be created by the factory.
820  views::FocusManagerFactory::Install(new AshFocusManagerFactory);
821
822  // Env creates the compositor. Historically it seems to have been implicitly
823  // initialized first by the ActivationController, but now that FocusController
824  // no longer does this we need to do it explicitly.
825  aura::Env::CreateInstance();
826
827  // The WindowModalityController needs to be at the front of the input event
828  // pretarget handler list to ensure that it processes input events when modal
829  // windows are active.
830  window_modality_controller_.reset(
831      new ::wm::WindowModalityController(this));
832
833  AddPreTargetHandler(this);
834
835  env_filter_.reset(new ::wm::CompoundEventFilter);
836  AddPreTargetHandler(env_filter_.get());
837
838  ::wm::FocusController* focus_controller =
839      new ::wm::FocusController(new wm::AshFocusRules);
840  focus_client_.reset(focus_controller);
841  activation_client_ = focus_controller;
842  activation_client_->AddObserver(this);
843  focus_cycler_.reset(new internal::FocusCycler());
844
845  screen_position_controller_.reset(new internal::ScreenPositionController);
846  window_tree_host_factory_.reset(delegate_->CreateWindowTreeHostFactory());
847
848  display_controller_->Start();
849  display_controller_->InitPrimaryDisplay();
850  aura::Window* root_window = display_controller_->GetPrimaryRootWindow();
851  target_root_window_ = root_window;
852
853#if defined(OS_CHROMEOS)
854  resolution_notification_controller_.reset(
855      new internal::ResolutionNotificationController);
856#endif
857
858  cursor_manager_.SetDisplay(GetScreen()->GetPrimaryDisplay());
859
860  nested_dispatcher_controller_.reset(new NestedDispatcherController);
861  accelerator_controller_.reset(new AcceleratorController);
862
863#if defined(OS_CHROMEOS) && defined(USE_X11)
864  magnifier_key_scroll_handler_ = MagnifierKeyScroller::CreateHandler().Pass();
865  AddPreTargetHandler(magnifier_key_scroll_handler_.get());
866  speech_feedback_handler_ = SpokenFeedbackToggler::CreateHandler().Pass();
867  AddPreTargetHandler(speech_feedback_handler_.get());
868#endif
869
870  // The order in which event filters are added is significant.
871
872#if defined(OS_CHROMEOS)
873  // The StickyKeysController also rewrites events and must be added
874  // before observers, but after the EventRewriterEventFilter.
875  sticky_keys_controller_.reset(new StickyKeysController);
876  AddPreTargetHandler(sticky_keys_controller_.get());
877#endif
878
879  // UserActivityDetector passes events to observers, so let them get
880  // rewritten first.
881  user_activity_detector_.reset(new UserActivityDetector);
882  AddPreTargetHandler(user_activity_detector_.get());
883
884  overlay_filter_.reset(new internal::OverlayEventFilter);
885  AddPreTargetHandler(overlay_filter_.get());
886  AddShellObserver(overlay_filter_.get());
887
888  input_method_filter_.reset(new ::wm::InputMethodEventFilter(
889      root_window->GetHost()->GetAcceleratedWidget()));
890  AddPreTargetHandler(input_method_filter_.get());
891
892  accelerator_filter_.reset(new internal::AcceleratorFilter);
893  AddPreTargetHandler(accelerator_filter_.get());
894
895  event_transformation_handler_.reset(new internal::EventTransformationHandler);
896  AddPreTargetHandler(event_transformation_handler_.get());
897
898  toplevel_window_event_handler_.reset(new ToplevelWindowEventHandler);
899
900  system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
901  AddPreTargetHandler(system_gesture_filter_.get());
902
903  keyboard_metrics_filter_.reset(new internal::KeyboardUMAEventFilter);
904  AddPreTargetHandler(keyboard_metrics_filter_.get());
905
906  // The keyboard system must be initialized before the RootWindowController is
907  // created.
908#if defined(OS_CHROMEOS)
909    keyboard::InitializeKeyboard();
910#endif
911
912  lock_state_controller_.reset(new LockStateController);
913  power_button_controller_.reset(new PowerButtonController(
914      lock_state_controller_.get()));
915#if defined(OS_CHROMEOS)
916  // Pass the initial display state to PowerButtonController.
917  power_button_controller_->OnDisplayModeChanged(
918      output_configurator_->cached_outputs());
919#endif
920  AddShellObserver(lock_state_controller_.get());
921
922  drag_drop_controller_.reset(new internal::DragDropController);
923  mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
924  PrependPreTargetHandler(mouse_cursor_filter_.get());
925
926  // Create Controllers that may need root window.
927  // TODO(oshima): Move as many controllers before creating
928  // RootWindowController as possible.
929  visibility_controller_.reset(new AshVisibilityController);
930
931  magnification_controller_.reset(
932      MagnificationController::CreateInstance());
933  mru_window_tracker_.reset(new MruWindowTracker(activation_client_));
934
935  partial_magnification_controller_.reset(
936      new PartialMagnificationController());
937
938  autoclick_controller_.reset(AutoclickController::CreateInstance());
939
940  high_contrast_controller_.reset(new HighContrastController);
941  video_detector_.reset(new VideoDetector);
942  window_selector_controller_.reset(new WindowSelectorController());
943
944  tooltip_controller_.reset(
945      new views::corewm::TooltipController(
946          scoped_ptr<views::corewm::Tooltip>(
947              new views::corewm::TooltipAura(gfx::SCREEN_TYPE_ALTERNATE))));
948  AddPreTargetHandler(tooltip_controller_.get());
949
950  event_client_.reset(new internal::EventClientImpl);
951
952  // This controller needs to be set before SetupManagedWindowMode.
953  desktop_background_controller_.reset(new DesktopBackgroundController());
954  user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
955
956  session_state_delegate_.reset(delegate_->CreateSessionStateDelegate());
957  accessibility_delegate_.reset(delegate_->CreateAccessibilityDelegate());
958  new_window_delegate_.reset(delegate_->CreateNewWindowDelegate());
959  media_delegate_.reset(delegate_->CreateMediaDelegate());
960
961  resize_shadow_controller_.reset(new internal::ResizeShadowController());
962  shadow_controller_.reset(
963      new ::wm::ShadowController(activation_client_));
964
965  // Create system_tray_notifier_ before the delegate.
966  system_tray_notifier_.reset(new ash::SystemTrayNotifier());
967
968  // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
969  system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
970  DCHECK(system_tray_delegate_.get());
971
972  locale_notification_controller_.reset(
973      new internal::LocaleNotificationController);
974
975  // Initialize system_tray_delegate_ after StatusAreaWidget is created.
976  system_tray_delegate_->Initialize();
977
978#if defined(OS_CHROMEOS)
979  // Create the LogoutConfirmationController after the SystemTrayDelegate.
980  logout_confirmation_controller_.reset(
981      new internal::LogoutConfirmationController(
982          base::Bind(&SystemTrayDelegate::SignOut,
983                     base::Unretained(system_tray_delegate_.get()))));
984#endif
985
986  // TODO(oshima): Initialize all RootWindowControllers once, and
987  // initialize controller/delegates above when initializing the
988  // primary root window controller.
989  internal::RootWindowController::CreateForPrimaryDisplay(
990      root_window->GetHost());
991
992  display_controller_->InitSecondaryDisplays();
993
994  // It needs to be created after RootWindowController has been created
995  // (which calls OnWindowResized has been called, otherwise the
996  // widget will not paint when restoring after a browser crash.  Also it needs
997  // to be created after InitSecondaryDisplays() to initialize the wallpapers in
998  // the correct size.
999  user_wallpaper_delegate_->InitializeWallpaper();
1000
1001  if (initially_hide_cursor_)
1002    cursor_manager_.HideCursor();
1003  cursor_manager_.SetCursor(ui::kCursorPointer);
1004
1005#if defined(OS_CHROMEOS)
1006  // Set accelerator controller delegates.
1007  accelerator_controller_->SetBrightnessControlDelegate(
1008      scoped_ptr<ash::BrightnessControlDelegate>(
1009          new ash::system::BrightnessControllerChromeos).Pass());
1010
1011  power_event_observer_.reset(new internal::PowerEventObserver());
1012  user_activity_notifier_.reset(
1013      new internal::UserActivityNotifier(user_activity_detector_.get()));
1014  video_activity_notifier_.reset(
1015      new internal::VideoActivityNotifier(video_detector_.get()));
1016  bluetooth_notification_controller_.reset(
1017      new internal::BluetoothNotificationController);
1018  last_window_closed_logout_reminder_.reset(
1019      new internal::LastWindowClosedLogoutReminder);
1020#endif
1021
1022  weak_display_manager_factory_.reset(
1023      new base::WeakPtrFactory<internal::DisplayManager>(
1024          display_manager_.get()));
1025  // The compositor thread and main message loop have to be running in
1026  // order to create mirror window. Run it after the main message loop
1027  // is started.
1028  base::MessageLoopForUI::current()->PostTask(
1029      FROM_HERE,
1030      base::Bind(&internal::DisplayManager::CreateMirrorWindowIfAny,
1031                 weak_display_manager_factory_->GetWeakPtr()));
1032}
1033
1034void Shell::InitKeyboard() {
1035  if (keyboard::IsKeyboardEnabled()) {
1036    if (keyboard_controller_.get()) {
1037      RootWindowControllerList controllers = GetAllRootWindowControllers();
1038      for (RootWindowControllerList::iterator iter = controllers.begin();
1039           iter != controllers.end(); ++iter) {
1040        (*iter)->DeactivateKeyboard(keyboard_controller_.get());
1041      }
1042    }
1043    keyboard::KeyboardControllerProxy* proxy =
1044        delegate_->CreateKeyboardControllerProxy();
1045    keyboard_controller_.reset(
1046        new keyboard::KeyboardController(proxy));
1047  }
1048}
1049
1050void Shell::InitRootWindow(aura::Window* root_window) {
1051  DCHECK(activation_client_);
1052  DCHECK(visibility_controller_.get());
1053  DCHECK(drag_drop_controller_.get());
1054
1055  aura::client::SetFocusClient(root_window, focus_client_.get());
1056  input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
1057  aura::client::SetActivationClient(root_window, activation_client_);
1058  ::wm::FocusController* focus_controller =
1059      static_cast< ::wm::FocusController*>(activation_client_);
1060  root_window->AddPreTargetHandler(focus_controller);
1061  aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
1062  aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
1063  aura::client::SetScreenPositionClient(root_window,
1064                                        screen_position_controller_.get());
1065  aura::client::SetCursorClient(root_window, &cursor_manager_);
1066  aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
1067  aura::client::SetEventClient(root_window, event_client_.get());
1068
1069  aura::client::SetWindowMoveClient(root_window,
1070      toplevel_window_event_handler_.get());
1071  root_window->AddPreTargetHandler(toplevel_window_event_handler_.get());
1072  root_window->AddPostTargetHandler(toplevel_window_event_handler_.get());
1073
1074  if (nested_dispatcher_controller_) {
1075    aura::client::SetDispatcherClient(root_window,
1076                                      nested_dispatcher_controller_.get());
1077  }
1078}
1079
1080bool Shell::CanWindowReceiveEvents(aura::Window* window) {
1081  RootWindowControllerList controllers = GetAllRootWindowControllers();
1082  for (RootWindowControllerList::iterator iter = controllers.begin();
1083       iter != controllers.end(); ++iter) {
1084    internal::SystemModalContainerLayoutManager* layout_manager =
1085        (*iter)->GetSystemModalLayoutManager(window);
1086    if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
1087      return true;
1088  }
1089  return false;
1090}
1091
1092////////////////////////////////////////////////////////////////////////////////
1093// Shell, ui::EventTarget overrides:
1094
1095bool Shell::CanAcceptEvent(const ui::Event& event) {
1096  return true;
1097}
1098
1099ui::EventTarget* Shell::GetParentTarget() {
1100  return aura::Env::GetInstance();
1101}
1102
1103scoped_ptr<ui::EventTargetIterator> Shell::GetChildIterator() const {
1104  return scoped_ptr<ui::EventTargetIterator>();
1105}
1106
1107ui::EventTargeter* Shell::GetEventTargeter() {
1108  NOTREACHED();
1109  return NULL;
1110}
1111
1112void Shell::OnEvent(ui::Event* event) {
1113}
1114
1115////////////////////////////////////////////////////////////////////////////////
1116// Shell, aura::client::ActivationChangeObserver implementation:
1117
1118void Shell::OnWindowActivated(aura::Window* gained_active,
1119                              aura::Window* lost_active) {
1120  if (gained_active)
1121    target_root_window_ = gained_active->GetRootWindow();
1122}
1123
1124}  // namespace ash
1125