shell.cc revision f8ee788a64d60abd8f2d742a5fdedde054ecd910 
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::ToggleAppList(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(!app_list_controller_->IsVisible(), window);
302}
303
304bool Shell::GetAppListTargetVisibility() const {
305  return app_list_controller_.get() &&
306      app_list_controller_->GetTargetVisibility();
307}
308
309aura::Window* Shell::GetAppListWindow() {
310  return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
311}
312
313app_list::AppListView* Shell::GetAppListView() {
314  return app_list_controller_.get() ? app_list_controller_->GetView() : NULL;
315}
316
317bool Shell::IsSystemModalWindowOpen() const {
318  if (simulate_modal_window_open_for_testing_)
319    return true;
320  const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
321      kShellWindowId_SystemModalContainer, NULL);
322  for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
323       cit != containers.end(); ++cit) {
324    for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
325         wit != (*cit)->children().end(); ++wit) {
326      if ((*wit)->GetProperty(aura::client::kModalKey) ==
327          ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
328        return true;
329      }
330    }
331  }
332  return false;
333}
334
335views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
336    views::Widget* widget) {
337  // Use translucent-style window frames for dialogs.
338  return new CustomFrameViewAsh(widget);
339}
340
341void Shell::RotateFocus(Direction direction) {
342  focus_cycler_->RotateFocus(direction == FORWARD ? FocusCycler::FORWARD
343                                                  : FocusCycler::BACKWARD);
344}
345
346void Shell::SetDisplayWorkAreaInsets(Window* contains,
347                                     const gfx::Insets& insets) {
348  if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
349          contains, insets)) {
350    return;
351  }
352  FOR_EACH_OBSERVER(ShellObserver, observers_,
353                    OnDisplayWorkAreaInsetsChanged());
354}
355
356void Shell::OnLoginStateChanged(user::LoginStatus status) {
357  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
358}
359
360void Shell::OnLoginUserProfilePrepared() {
361  CreateShelf();
362  CreateKeyboard();
363}
364
365void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
366  RootWindowControllerList controllers = GetAllRootWindowControllers();
367  for (RootWindowControllerList::iterator iter = controllers.begin();
368       iter != controllers.end(); ++iter)
369    (*iter)->UpdateAfterLoginStatusChange(status);
370}
371
372void Shell::OnAppTerminating() {
373  FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
374}
375
376void Shell::OnLockStateChanged(bool locked) {
377  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
378#ifndef NDEBUG
379  // Make sure that there is no system modal in Lock layer when unlocked.
380  if (!locked) {
381    std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
382        kShellWindowId_LockSystemModalContainer, GetPrimaryRootWindow());
383    for (std::vector<aura::Window*>::const_iterator iter = containers.begin();
384         iter != containers.end(); ++iter) {
385      DCHECK_EQ(0u, (*iter)->children().size());
386    }
387  }
388#endif
389}
390
391void Shell::OnCastingSessionStartedOrStopped(bool started) {
392#if defined(OS_CHROMEOS) && defined(USE_X11)
393  if (projecting_observer_)
394    projecting_observer_->OnCastingSessionStartedOrStopped(started);
395#endif
396}
397
398void Shell::OnOverviewModeStarting() {
399  FOR_EACH_OBSERVER(ShellObserver, observers_, OnOverviewModeStarting());
400}
401
402void Shell::OnOverviewModeEnding() {
403  FOR_EACH_OBSERVER(ShellObserver, observers_, OnOverviewModeEnding());
404}
405
406void Shell::OnMaximizeModeStarted() {
407  FOR_EACH_OBSERVER(ShellObserver, observers_, OnMaximizeModeStarted());
408}
409
410void Shell::OnMaximizeModeEnded() {
411  FOR_EACH_OBSERVER(ShellObserver, observers_, OnMaximizeModeEnded());
412}
413
414void Shell::OnRootWindowAdded(aura::Window* root_window) {
415  FOR_EACH_OBSERVER(ShellObserver, observers_, OnRootWindowAdded(root_window));
416}
417
418void Shell::CreateShelf() {
419  RootWindowControllerList controllers = GetAllRootWindowControllers();
420  for (RootWindowControllerList::iterator iter = controllers.begin();
421       iter != controllers.end(); ++iter)
422    (*iter)->shelf()->CreateShelf();
423}
424
425void Shell::OnShelfCreatedForRootWindow(aura::Window* root_window) {
426  FOR_EACH_OBSERVER(ShellObserver,
427                    observers_,
428                    OnShelfCreatedForRootWindow(root_window));
429}
430
431void Shell::CreateKeyboard() {
432  // TODO(bshe): Primary root window controller may not be the controller to
433  // attach virtual keyboard. See http://crbug.com/303429
434  InitKeyboard();
435  if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
436    display_controller()->virtual_keyboard_window_controller()->
437        ActivateKeyboard(keyboard::KeyboardController::GetInstance());
438  } else {
439    GetPrimaryRootWindowController()->
440        ActivateKeyboard(keyboard::KeyboardController::GetInstance());
441  }
442}
443
444void Shell::DeactivateKeyboard() {
445  if (keyboard::KeyboardController::GetInstance()) {
446    RootWindowControllerList controllers = GetAllRootWindowControllers();
447    for (RootWindowControllerList::iterator iter = controllers.begin();
448        iter != controllers.end(); ++iter) {
449      (*iter)->DeactivateKeyboard(keyboard::KeyboardController::GetInstance());
450    }
451  }
452  keyboard::KeyboardController::ResetInstance(NULL);
453}
454
455void Shell::ShowShelf() {
456  RootWindowControllerList controllers = GetAllRootWindowControllers();
457  for (RootWindowControllerList::iterator iter = controllers.begin();
458       iter != controllers.end(); ++iter)
459    (*iter)->ShowShelf();
460}
461
462void Shell::AddShellObserver(ShellObserver* observer) {
463  observers_.AddObserver(observer);
464}
465
466void Shell::RemoveShellObserver(ShellObserver* observer) {
467  observers_.RemoveObserver(observer);
468}
469
470#if defined(OS_CHROMEOS)
471bool Shell::ShouldSaveDisplaySettings() {
472  return !((maximize_mode_controller_->IsMaximizeModeWindowManagerEnabled() &&
473            maximize_mode_controller_->in_set_screen_rotation()) ||
474           resolution_notification_controller_->DoesNotificationTimeout());
475}
476#endif
477
478void Shell::UpdateShelfVisibility() {
479  RootWindowControllerList controllers = GetAllRootWindowControllers();
480  for (RootWindowControllerList::iterator iter = controllers.begin();
481       iter != controllers.end(); ++iter)
482    if ((*iter)->shelf())
483      (*iter)->UpdateShelfVisibility();
484}
485
486void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
487                                     aura::Window* root_window) {
488  ash::ShelfLayoutManager::ForShelf(root_window)->SetAutoHideBehavior(behavior);
489}
490
491ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
492    aura::Window* root_window) const {
493  return ash::ShelfLayoutManager::ForShelf(root_window)->auto_hide_behavior();
494}
495
496void Shell::SetShelfAlignment(ShelfAlignment alignment,
497                              aura::Window* root_window) {
498  if (ash::ShelfLayoutManager::ForShelf(root_window)->SetAlignment(alignment)) {
499    FOR_EACH_OBSERVER(
500        ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
501  }
502}
503
504ShelfAlignment Shell::GetShelfAlignment(const aura::Window* root_window) {
505  return GetRootWindowController(root_window)
506      ->GetShelfLayoutManager()
507      ->GetAlignment();
508}
509
510void Shell::SetDimming(bool should_dim) {
511  RootWindowControllerList controllers = GetAllRootWindowControllers();
512  for (RootWindowControllerList::iterator iter = controllers.begin();
513       iter != controllers.end(); ++iter)
514    (*iter)->screen_dimmer()->SetDimming(should_dim);
515}
516
517void Shell::NotifyFullscreenStateChange(bool is_fullscreen,
518                                        aura::Window* root_window) {
519  FOR_EACH_OBSERVER(ShellObserver, observers_, OnFullscreenStateChanged(
520      is_fullscreen, root_window));
521}
522
523void Shell::CreateModalBackground(aura::Window* window) {
524  if (!modality_filter_) {
525    modality_filter_.reset(new SystemModalContainerEventFilter(this));
526    AddPreTargetHandler(modality_filter_.get());
527  }
528  RootWindowControllerList controllers = GetAllRootWindowControllers();
529  for (RootWindowControllerList::iterator iter = controllers.begin();
530       iter != controllers.end(); ++iter)
531    (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
532}
533
534void Shell::OnModalWindowRemoved(aura::Window* removed) {
535  RootWindowControllerList controllers = GetAllRootWindowControllers();
536  bool activated = false;
537  for (RootWindowControllerList::iterator iter = controllers.begin();
538       iter != controllers.end() && !activated; ++iter) {
539    activated = (*iter)->GetSystemModalLayoutManager(removed)->
540        ActivateNextModalWindow();
541  }
542  if (!activated) {
543    RemovePreTargetHandler(modality_filter_.get());
544    modality_filter_.reset();
545    for (RootWindowControllerList::iterator iter = controllers.begin();
546         iter != controllers.end(); ++iter)
547      (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
548  }
549}
550
551WebNotificationTray* Shell::GetWebNotificationTray() {
552  return GetPrimaryRootWindowController()->shelf()->
553      status_area_widget()->web_notification_tray();
554}
555
556bool Shell::HasPrimaryStatusArea() {
557  ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
558  return shelf && shelf->status_area_widget();
559}
560
561SystemTray* Shell::GetPrimarySystemTray() {
562  return GetPrimaryRootWindowController()->GetSystemTray();
563}
564
565ShelfDelegate* Shell::GetShelfDelegate() {
566  if (!shelf_delegate_) {
567    shelf_model_.reset(new ShelfModel);
568    // Creates ShelfItemDelegateManager before ShelfDelegate.
569    shelf_item_delegate_manager_.reset(
570        new ShelfItemDelegateManager(shelf_model_.get()));
571
572    shelf_delegate_.reset(delegate_->CreateShelfDelegate(shelf_model_.get()));
573    scoped_ptr<ShelfItemDelegate> controller(new AppListShelfItemDelegate);
574
575    // Finding the shelf model's location of the app list and setting its
576    // ShelfItemDelegate.
577    int app_list_index = shelf_model_->GetItemIndexForType(TYPE_APP_LIST);
578    DCHECK_GE(app_list_index, 0);
579    ShelfID app_list_id = shelf_model_->items()[app_list_index].id;
580    DCHECK(app_list_id);
581    shelf_item_delegate_manager_->SetShelfItemDelegate(app_list_id,
582                                                       controller.Pass());
583    shelf_window_watcher_.reset(new ShelfWindowWatcher(
584        shelf_model_.get(), shelf_item_delegate_manager_.get()));
585  }
586  return shelf_delegate_.get();
587}
588
589void Shell::SetTouchHudProjectionEnabled(bool enabled) {
590  if (is_touch_hud_projection_enabled_ == enabled)
591    return;
592
593  is_touch_hud_projection_enabled_ = enabled;
594  FOR_EACH_OBSERVER(ShellObserver, observers_,
595                    OnTouchHudProjectionToggled(enabled));
596}
597
598#if defined(OS_CHROMEOS)
599ash::FirstRunHelper* Shell::CreateFirstRunHelper() {
600  return new ash::FirstRunHelperImpl;
601}
602
603void Shell::SetCursorCompositingEnabled(bool enabled) {
604  display_controller_->cursor_window_controller()->SetCursorCompositingEnabled(
605      enabled);
606  native_cursor_manager_->SetNativeCursorEnabled(!enabled);
607}
608#endif  // defined(OS_CHROMEOS)
609
610void Shell::DoInitialWorkspaceAnimation() {
611  return GetPrimaryRootWindowController()->workspace_controller()->
612      DoInitialAnimation();
613}
614
615////////////////////////////////////////////////////////////////////////////////
616// Shell, private:
617
618Shell::Shell(ShellDelegate* delegate)
619    : target_root_window_(NULL),
620      scoped_target_root_window_(NULL),
621      delegate_(delegate),
622      window_positioner_(new WindowPositioner),
623      activation_client_(NULL),
624      accelerometer_controller_(new AccelerometerController()),
625#if defined(OS_CHROMEOS)
626      display_configurator_(new ui::DisplayConfigurator()),
627#endif  // defined(OS_CHROMEOS)
628      native_cursor_manager_(new AshNativeCursorManager),
629      cursor_manager_(
630          scoped_ptr< ::wm::NativeCursorManager>(native_cursor_manager_)),
631      simulate_modal_window_open_for_testing_(false),
632      is_touch_hud_projection_enabled_(false) {
633  DCHECK(delegate_.get());
634  gpu_support_.reset(delegate_->CreateGPUSupport());
635  display_manager_.reset(new DisplayManager);
636  display_controller_.reset(new DisplayController);
637#if defined(OS_CHROMEOS) && defined(USE_X11)
638  user_metrics_recorder_.reset(new UserMetricsRecorder);
639#endif  // defined(OS_CHROMEOS)
640
641#if defined(OS_CHROMEOS)
642  PowerStatus::Initialize();
643#endif
644}
645
646Shell::~Shell() {
647  TRACE_EVENT0("shutdown", "ash::Shell::Destructor");
648
649  delegate_->PreShutdown();
650
651  views::FocusManagerFactory::Install(NULL);
652
653  // Remove the focus from any window. This will prevent overhead and side
654  // effects (e.g. crashes) from changing focus during shutdown.
655  // See bug crbug.com/134502.
656  aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
657
658  // Please keep in same order as in Init() because it's easy to miss one.
659  if (window_modality_controller_)
660    window_modality_controller_.reset();
661#if defined(OS_CHROMEOS) && defined(USE_X11)
662  RemovePreTargetHandler(magnifier_key_scroll_handler_.get());
663  magnifier_key_scroll_handler_.reset();
664
665  RemovePreTargetHandler(speech_feedback_handler_.get());
666  speech_feedback_handler_.reset();
667#endif
668  RemovePreTargetHandler(user_activity_detector_.get());
669  RemovePreTargetHandler(overlay_filter_.get());
670  RemovePreTargetHandler(input_method_filter_.get());
671  RemovePreTargetHandler(accelerator_filter_.get());
672  RemovePreTargetHandler(event_transformation_handler_.get());
673  RemovePreTargetHandler(toplevel_window_event_handler_.get());
674  RemovePostTargetHandler(toplevel_window_event_handler_.get());
675  RemovePreTargetHandler(system_gesture_filter_.get());
676  RemovePreTargetHandler(keyboard_metrics_filter_.get());
677  RemovePreTargetHandler(mouse_cursor_filter_.get());
678
679  // TooltipController is deleted with the Shell so removing its references.
680  RemovePreTargetHandler(tooltip_controller_.get());
681
682  // Destroy maximize mode controller early on since it has some observers which
683  // need to be removed.
684  maximize_mode_controller_->Shutdown();
685  maximize_mode_controller_.reset();
686
687  // AppList needs to be released before shelf layout manager, which is
688  // destroyed with shelf container in the loop below. However, app list
689  // container is now on top of shelf container and released after it.
690  // TODO(xiyuan): Move it back when app list container is no longer needed.
691  app_list_controller_.reset();
692
693#if defined(OS_CHROMEOS)
694  // Destroy the LastWindowClosedLogoutReminder before the
695  // LogoutConfirmationController.
696  last_window_closed_logout_reminder_.reset();
697
698  // Destroy the LogoutConfirmationController before the SystemTrayDelegate.
699  logout_confirmation_controller_.reset();
700#endif
701
702  // Destroy SystemTrayDelegate before destroying the status area(s).
703  system_tray_delegate_->Shutdown();
704  system_tray_delegate_.reset();
705
706  locale_notification_controller_.reset();
707
708  // Drag-and-drop must be canceled prior to close all windows.
709  drag_drop_controller_.reset();
710
711  // Controllers who have WindowObserver added must be deleted
712  // before |display_controller_| is deleted.
713
714#if defined(OS_CHROMEOS)
715  // VideoActivityNotifier must be deleted before |video_detector_| is
716  // deleted because it's observing video activity through
717  // VideoDetectorObserver interface.
718  video_activity_notifier_.reset();
719#endif  // defined(OS_CHROMEOS)
720  video_detector_.reset();
721  high_contrast_controller_.reset();
722
723  shadow_controller_.reset();
724  resize_shadow_controller_.reset();
725
726  window_cycle_controller_.reset();
727  window_selector_controller_.reset();
728  mru_window_tracker_.reset();
729
730  // |shelf_window_watcher_| has a weak pointer to |shelf_Model_|
731  // and has window observers.
732  shelf_window_watcher_.reset();
733
734  // Destroy all child windows including widgets.
735  display_controller_->CloseChildWindows();
736  display_controller_->CloseNonDesktopDisplay();
737
738  // Chrome implementation of shelf delegate depends on FocusClient,
739  // so must be deleted before |focus_client_|.
740  shelf_delegate_.reset();
741  focus_client_.reset();
742
743  // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
744  // needs to remove observers from it.
745  system_tray_notifier_.reset();
746
747  // These need a valid Shell instance to clean up properly, so explicitly
748  // delete them before invalidating the instance.
749  // Alphabetical. TODO(oshima): sort.
750  magnification_controller_.reset();
751  partial_magnification_controller_.reset();
752  tooltip_controller_.reset();
753  event_client_.reset();
754  nested_accelerator_controller_.reset();
755  toplevel_window_event_handler_.reset();
756  visibility_controller_.reset();
757  // |shelf_item_delegate_manager_| observes |shelf_model_|. It must be
758  // destroyed before |shelf_model_| is destroyed.
759  shelf_item_delegate_manager_.reset();
760  shelf_model_.reset();
761
762  power_button_controller_.reset();
763  lock_state_controller_.reset();
764
765#if defined(OS_CHROMEOS)
766  resolution_notification_controller_.reset();
767#endif
768  desktop_background_controller_.reset();
769  mouse_cursor_filter_.reset();
770
771#if defined(OS_CHROMEOS) && defined(USE_X11)
772  touch_transformer_controller_.reset();
773#endif  // defined(OS_CHROMEOS) && defined(USE_X11)
774
775  // This also deletes all RootWindows. Note that we invoke Shutdown() on
776  // DisplayController before resetting |display_controller_|, since destruction
777  // of its owned RootWindowControllers relies on the value.
778  display_manager_->CreateScreenForShutdown();
779  display_controller_->Shutdown();
780  display_controller_.reset();
781  screen_position_controller_.reset();
782  accessibility_delegate_.reset();
783  new_window_delegate_.reset();
784  media_delegate_.reset();
785
786  keyboard::KeyboardController::ResetInstance(NULL);
787
788#if defined(OS_CHROMEOS)
789  if (display_change_observer_)
790    display_configurator_->RemoveObserver(display_change_observer_.get());
791  if (display_configurator_animation_)
792    display_configurator_->RemoveObserver(
793        display_configurator_animation_.get());
794  if (display_error_observer_)
795    display_configurator_->RemoveObserver(display_error_observer_.get());
796  if (projecting_observer_)
797    display_configurator_->RemoveObserver(projecting_observer_.get());
798  display_change_observer_.reset();
799#endif  // defined(OS_CHROMEOS)
800
801#if defined(OS_CHROMEOS)
802  PowerStatus::Shutdown();
803#endif
804
805  DCHECK(instance_ == this);
806  instance_ = NULL;
807}
808
809void Shell::Init(const ShellInitParams& init_params) {
810  delegate_->PreInit();
811  if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
812    display_manager_->SetSecondDisplayMode(DisplayManager::VIRTUAL_KEYBOARD);
813  }
814  bool display_initialized = display_manager_->InitFromCommandLine();
815#if defined(OS_CHROMEOS)
816  display_configurator_->Init(!gpu_support_->IsPanelFittingDisabled());
817  display_configurator_animation_.reset(new DisplayConfiguratorAnimation());
818  display_configurator_->AddObserver(display_configurator_animation_.get());
819
820  projecting_observer_.reset(new ProjectingObserver());
821  display_configurator_->AddObserver(projecting_observer_.get());
822
823  if (!display_initialized && base::SysInfo::IsRunningOnChromeOS()) {
824    display_change_observer_.reset(new DisplayChangeObserver);
825    // Register |display_change_observer_| first so that the rest of
826    // observer gets invoked after the root windows are configured.
827    display_configurator_->AddObserver(display_change_observer_.get());
828    display_error_observer_.reset(new DisplayErrorObserver());
829    display_configurator_->AddObserver(display_error_observer_.get());
830    display_configurator_->set_state_controller(display_change_observer_.get());
831    display_configurator_->set_mirroring_controller(display_manager_.get());
832    display_configurator_->ForceInitialConfigure(
833        delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
834    display_initialized = true;
835  }
836#endif  // defined(OS_CHROMEOS)
837  if (!display_initialized)
838    display_manager_->InitDefaultDisplay();
839
840  // Install the custom factory first so that views::FocusManagers for Tray,
841  // Shelf, and WallPaper could be created by the factory.
842  views::FocusManagerFactory::Install(new AshFocusManagerFactory);
843
844  aura::Env::CreateInstance(true);
845  aura::Env::GetInstance()->set_context_factory(init_params.context_factory);
846
847  // The WindowModalityController needs to be at the front of the input event
848  // pretarget handler list to ensure that it processes input events when modal
849  // windows are active.
850  window_modality_controller_.reset(
851      new ::wm::WindowModalityController(this));
852
853  env_filter_.reset(new ::wm::CompoundEventFilter);
854  AddPreTargetHandler(env_filter_.get());
855
856  ::wm::FocusController* focus_controller =
857      new ::wm::FocusController(new wm::AshFocusRules);
858  focus_client_.reset(focus_controller);
859  activation_client_ = focus_controller;
860  activation_client_->AddObserver(this);
861  focus_cycler_.reset(new FocusCycler());
862
863  screen_position_controller_.reset(new ScreenPositionController);
864
865  display_controller_->Start();
866  display_controller_->CreatePrimaryHost(
867      ShellInitParamsToAshWindowTreeHostInitParams(init_params));
868  aura::Window* root_window = display_controller_->GetPrimaryRootWindow();
869  target_root_window_ = root_window;
870
871#if defined(OS_CHROMEOS)
872  resolution_notification_controller_.reset(
873      new ResolutionNotificationController);
874#endif
875
876  cursor_manager_.SetDisplay(GetScreen()->GetPrimaryDisplay());
877
878  nested_accelerator_controller_.reset(
879      new ::wm::NestedAcceleratorController(new NestedAcceleratorDelegate));
880  accelerator_controller_.reset(new AcceleratorController);
881  maximize_mode_controller_.reset(new MaximizeModeController());
882
883#if defined(OS_CHROMEOS) && defined(USE_X11)
884  magnifier_key_scroll_handler_ = MagnifierKeyScroller::CreateHandler().Pass();
885  AddPreTargetHandler(magnifier_key_scroll_handler_.get());
886  speech_feedback_handler_ = SpokenFeedbackToggler::CreateHandler().Pass();
887  AddPreTargetHandler(speech_feedback_handler_.get());
888#endif
889
890  // The order in which event filters are added is significant.
891
892#if defined(OS_CHROMEOS)
893  // The StickyKeysController also rewrites events and must be added
894  // before observers, but after the EventRewriterEventFilter.
895  sticky_keys_controller_.reset(new StickyKeysController);
896  AddPreTargetHandler(sticky_keys_controller_.get());
897#endif
898
899  // wm::UserActivityDetector passes events to observers, so let them get
900  // rewritten first.
901  user_activity_detector_.reset(new ::wm::UserActivityDetector);
902  AddPreTargetHandler(user_activity_detector_.get());
903
904  overlay_filter_.reset(new OverlayEventFilter);
905  AddPreTargetHandler(overlay_filter_.get());
906  AddShellObserver(overlay_filter_.get());
907
908  input_method_filter_.reset(new ::wm::InputMethodEventFilter(
909      root_window->GetHost()->GetAcceleratedWidget()));
910  AddPreTargetHandler(input_method_filter_.get());
911
912  accelerator_filter_.reset(new ::wm::AcceleratorFilter(
913      scoped_ptr< ::wm::AcceleratorDelegate>(new AcceleratorDelegate).Pass()));
914  AddPreTargetHandler(accelerator_filter_.get());
915
916  event_transformation_handler_.reset(new EventTransformationHandler);
917  AddPreTargetHandler(event_transformation_handler_.get());
918
919  toplevel_window_event_handler_.reset(new ToplevelWindowEventHandler);
920
921  system_gesture_filter_.reset(new SystemGestureEventFilter);
922  AddPreTargetHandler(system_gesture_filter_.get());
923
924  keyboard_metrics_filter_.reset(new KeyboardUMAEventFilter);
925  AddPreTargetHandler(keyboard_metrics_filter_.get());
926
927  // The keyboard system must be initialized before the RootWindowController is
928  // created.
929#if defined(OS_CHROMEOS)
930    keyboard::InitializeKeyboard();
931#endif
932
933  lock_state_controller_.reset(new LockStateController);
934  power_button_controller_.reset(new PowerButtonController(
935      lock_state_controller_.get()));
936#if defined(OS_CHROMEOS)
937  // Pass the initial display state to PowerButtonController.
938  power_button_controller_->OnDisplayModeChanged(
939      display_configurator_->cached_displays());
940#endif
941  AddShellObserver(lock_state_controller_.get());
942
943  drag_drop_controller_.reset(new DragDropController);
944  mouse_cursor_filter_.reset(new MouseCursorEventFilter());
945  PrependPreTargetHandler(mouse_cursor_filter_.get());
946
947  // Create Controllers that may need root window.
948  // TODO(oshima): Move as many controllers before creating
949  // RootWindowController as possible.
950  visibility_controller_.reset(new AshVisibilityController);
951
952  magnification_controller_.reset(
953      MagnificationController::CreateInstance());
954  mru_window_tracker_.reset(new MruWindowTracker(activation_client_));
955
956  partial_magnification_controller_.reset(
957      new PartialMagnificationController());
958
959  autoclick_controller_.reset(AutoclickController::CreateInstance());
960
961  high_contrast_controller_.reset(new HighContrastController);
962  video_detector_.reset(new VideoDetector);
963  window_selector_controller_.reset(new WindowSelectorController());
964  window_cycle_controller_.reset(new WindowCycleController());
965
966  tooltip_controller_.reset(
967      new views::corewm::TooltipController(
968          scoped_ptr<views::corewm::Tooltip>(
969              new views::corewm::TooltipAura(gfx::SCREEN_TYPE_ALTERNATE))));
970  AddPreTargetHandler(tooltip_controller_.get());
971
972  event_client_.reset(new EventClientImpl);
973
974  // This controller needs to be set before SetupManagedWindowMode.
975  desktop_background_controller_.reset(new DesktopBackgroundController());
976  user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
977
978  session_state_delegate_.reset(delegate_->CreateSessionStateDelegate());
979  accessibility_delegate_.reset(delegate_->CreateAccessibilityDelegate());
980  new_window_delegate_.reset(delegate_->CreateNewWindowDelegate());
981  media_delegate_.reset(delegate_->CreateMediaDelegate());
982
983  resize_shadow_controller_.reset(new ResizeShadowController());
984  shadow_controller_.reset(
985      new ::wm::ShadowController(activation_client_));
986
987  // Create system_tray_notifier_ before the delegate.
988  system_tray_notifier_.reset(new ash::SystemTrayNotifier());
989
990  // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
991  system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
992  DCHECK(system_tray_delegate_.get());
993
994  locale_notification_controller_.reset(new LocaleNotificationController);
995
996  // Initialize system_tray_delegate_ after StatusAreaWidget is created.
997  system_tray_delegate_->Initialize();
998
999#if defined(OS_CHROMEOS)
1000  // Create the LogoutConfirmationController after the SystemTrayDelegate.
1001  logout_confirmation_controller_.reset(new LogoutConfirmationController(
1002      base::Bind(&SystemTrayDelegate::SignOut,
1003                 base::Unretained(system_tray_delegate_.get()))));
1004#endif
1005
1006#if defined(OS_CHROMEOS) && defined(USE_X11)
1007  // Create TouchTransformerController before DisplayController::InitDisplays()
1008  // since TouchTransformerController listens on
1009  // DisplayController::Observer::OnDisplaysInitialized().
1010  touch_transformer_controller_.reset(new TouchTransformerController());
1011#endif  // defined(OS_CHROMEOS) && defined(USE_X11)
1012
1013  display_controller_->InitDisplays();
1014
1015  // It needs to be created after RootWindowController has been created
1016  // (which calls OnWindowResized has been called, otherwise the
1017  // widget will not paint when restoring after a browser crash.  Also it needs
1018  // to be created after InitSecondaryDisplays() to initialize the wallpapers in
1019  // the correct size.
1020  user_wallpaper_delegate_->InitializeWallpaper();
1021
1022  if (initially_hide_cursor_)
1023    cursor_manager_.HideCursor();
1024  cursor_manager_.SetCursor(ui::kCursorPointer);
1025
1026#if defined(OS_CHROMEOS)
1027  // Set accelerator controller delegates.
1028  accelerator_controller_->SetBrightnessControlDelegate(
1029      scoped_ptr<ash::BrightnessControlDelegate>(
1030          new ash::system::BrightnessControllerChromeos).Pass());
1031
1032  power_event_observer_.reset(new PowerEventObserver());
1033  user_activity_notifier_.reset(
1034      new ui::UserActivityPowerManagerNotifier(user_activity_detector_.get()));
1035  video_activity_notifier_.reset(
1036      new VideoActivityNotifier(video_detector_.get()));
1037  bluetooth_notification_controller_.reset(new BluetoothNotificationController);
1038  last_window_closed_logout_reminder_.reset(new LastWindowClosedLogoutReminder);
1039#endif
1040
1041  weak_display_manager_factory_.reset(
1042      new base::WeakPtrFactory<DisplayManager>(display_manager_.get()));
1043  // The compositor thread and main message loop have to be running in
1044  // order to create mirror window. Run it after the main message loop
1045  // is started.
1046  base::MessageLoopForUI::current()->PostTask(
1047      FROM_HERE,
1048      base::Bind(&DisplayManager::CreateMirrorWindowIfAny,
1049                 weak_display_manager_factory_->GetWeakPtr()));
1050}
1051
1052void Shell::InitKeyboard() {
1053  if (keyboard::IsKeyboardEnabled()) {
1054    if (keyboard::KeyboardController::GetInstance()) {
1055      RootWindowControllerList controllers = GetAllRootWindowControllers();
1056      for (RootWindowControllerList::iterator iter = controllers.begin();
1057           iter != controllers.end(); ++iter) {
1058        (*iter)->DeactivateKeyboard(
1059            keyboard::KeyboardController::GetInstance());
1060      }
1061    }
1062    keyboard::KeyboardControllerProxy* proxy =
1063        delegate_->CreateKeyboardControllerProxy();
1064    keyboard::KeyboardController::ResetInstance(
1065        new keyboard::KeyboardController(proxy));
1066  }
1067}
1068
1069void Shell::InitRootWindow(aura::Window* root_window) {
1070  DCHECK(activation_client_);
1071  DCHECK(visibility_controller_.get());
1072  DCHECK(drag_drop_controller_.get());
1073
1074  aura::client::SetFocusClient(root_window, focus_client_.get());
1075  input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
1076  aura::client::SetActivationClient(root_window, activation_client_);
1077  ::wm::FocusController* focus_controller =
1078      static_cast< ::wm::FocusController*>(activation_client_);
1079  root_window->AddPreTargetHandler(focus_controller);
1080  aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
1081  aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
1082  aura::client::SetScreenPositionClient(root_window,
1083                                        screen_position_controller_.get());
1084  aura::client::SetCursorClient(root_window, &cursor_manager_);
1085  aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
1086  aura::client::SetEventClient(root_window, event_client_.get());
1087
1088  aura::client::SetWindowMoveClient(root_window,
1089      toplevel_window_event_handler_.get());
1090  root_window->AddPreTargetHandler(toplevel_window_event_handler_.get());
1091  root_window->AddPostTargetHandler(toplevel_window_event_handler_.get());
1092
1093  if (nested_accelerator_controller_) {
1094    aura::client::SetDispatcherClient(root_window,
1095                                      nested_accelerator_controller_.get());
1096  }
1097}
1098
1099bool Shell::CanWindowReceiveEvents(aura::Window* window) {
1100  RootWindowControllerList controllers = GetAllRootWindowControllers();
1101  for (RootWindowControllerList::iterator iter = controllers.begin();
1102       iter != controllers.end(); ++iter) {
1103    SystemModalContainerLayoutManager* layout_manager =
1104        (*iter)->GetSystemModalLayoutManager(window);
1105    if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
1106      return true;
1107    // Allow events to fall through to the virtual keyboard even if displaying
1108    // a system modal dialog.
1109    if ((*iter)->IsVirtualKeyboardWindow(window))
1110      return true;
1111  }
1112
1113  return false;
1114}
1115
1116////////////////////////////////////////////////////////////////////////////////
1117// Shell, ui::EventTarget overrides:
1118
1119bool Shell::CanAcceptEvent(const ui::Event& event) {
1120  return true;
1121}
1122
1123ui::EventTarget* Shell::GetParentTarget() {
1124  return aura::Env::GetInstance();
1125}
1126
1127scoped_ptr<ui::EventTargetIterator> Shell::GetChildIterator() const {
1128  return scoped_ptr<ui::EventTargetIterator>();
1129}
1130
1131ui::EventTargeter* Shell::GetEventTargeter() {
1132  NOTREACHED();
1133  return NULL;
1134}
1135
1136void Shell::OnEvent(ui::Event* event) {
1137}
1138
1139////////////////////////////////////////////////////////////////////////////////
1140// Shell, aura::client::ActivationChangeObserver implementation:
1141
1142void Shell::OnWindowActivated(aura::Window* gained_active,
1143                              aura::Window* lost_active) {
1144  if (gained_active)
1145    target_root_window_ = gained_active->GetRootWindow();
1146}
1147
1148}  // namespace ash
1149