shell.cc revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
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/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/ash_window_tree_host_init_params.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/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_init_params.h"
51#include "ash/shell_window_ids.h"
52#include "ash/system/locale/locale_notification_controller.h"
53#include "ash/system/status_area_widget.h"
54#include "ash/system/tray/system_tray_delegate.h"
55#include "ash/system/tray/system_tray_notifier.h"
56#include "ash/virtual_keyboard_controller.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  CHECK(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  CHECK(HasInstance());
217  return GetRootWindowController(GetPrimaryRootWindow());
218}
219
220// static
221Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
222  CHECK(HasInstance());
223  return Shell::GetInstance()->display_controller()->
224      GetAllRootWindowControllers();
225}
226
227// static
228aura::Window* Shell::GetPrimaryRootWindow() {
229  CHECK(HasInstance());
230  return GetInstance()->display_controller()->GetPrimaryRootWindow();
231}
232
233// static
234aura::Window* Shell::GetTargetRootWindow() {
235  CHECK(HasInstance());
236  Shell* shell = GetInstance();
237  if (shell->scoped_target_root_window_)
238    return shell->scoped_target_root_window_;
239  return shell->target_root_window_;
240}
241
242// static
243gfx::Screen* Shell::GetScreen() {
244  return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
245}
246
247// static
248aura::Window::Windows Shell::GetAllRootWindows() {
249  CHECK(HasInstance());
250  return Shell::GetInstance()->display_controller()->
251      GetAllRootWindows();
252}
253
254// static
255aura::Window* Shell::GetContainer(aura::Window* root_window,
256                                  int container_id) {
257  return root_window->GetChildById(container_id);
258}
259
260// static
261const aura::Window* Shell::GetContainer(const aura::Window* root_window,
262                                        int container_id) {
263  return root_window->GetChildById(container_id);
264}
265
266// static
267std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
268    int container_id,
269    aura::Window* priority_root) {
270  std::vector<aura::Window*> containers;
271  aura::Window::Windows root_windows = GetAllRootWindows();
272  for (aura::Window::Windows::const_iterator it = root_windows.begin();
273       it != root_windows.end(); ++it) {
274    aura::Window* container = (*it)->GetChildById(container_id);
275    if (container) {
276      if (priority_root && priority_root->Contains(container))
277        containers.insert(containers.begin(), container);
278      else
279        containers.push_back(container);
280    }
281  }
282  return containers;
283}
284
285void Shell::ShowContextMenu(const gfx::Point& location_in_screen,
286                            ui::MenuSourceType source_type) {
287  // No context menus if there is no session with an active user.
288  if (!session_state_delegate_->NumberOfLoggedInUsers())
289    return;
290  // No context menus when screen is locked.
291  if (session_state_delegate_->IsScreenLocked())
292    return;
293
294  aura::Window* root =
295      wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
296  GetRootWindowController(root)
297      ->ShowContextMenu(location_in_screen, source_type);
298}
299
300void Shell::ShowAppList(aura::Window* window) {
301  // If the context window is not given, show it on the target root window.
302  if (!window)
303    window = GetTargetRootWindow();
304  if (!app_list_controller_)
305    app_list_controller_.reset(new AppListController);
306  app_list_controller_->Show(window);
307}
308
309void Shell::DismissAppList() {
310  if (!app_list_controller_)
311    return;
312  app_list_controller_->Dismiss();
313}
314
315void Shell::ToggleAppList(aura::Window* window) {
316  if (app_list_controller_ && app_list_controller_->IsVisible()) {
317    DismissAppList();
318    return;
319  }
320
321  ShowAppList(window);
322}
323
324bool Shell::GetAppListTargetVisibility() const {
325  return app_list_controller_.get() &&
326      app_list_controller_->GetTargetVisibility();
327}
328
329aura::Window* Shell::GetAppListWindow() {
330  return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
331}
332
333app_list::AppListView* Shell::GetAppListView() {
334  return app_list_controller_.get() ? app_list_controller_->GetView() : NULL;
335}
336
337bool Shell::IsSystemModalWindowOpen() const {
338  if (simulate_modal_window_open_for_testing_)
339    return true;
340  const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
341      kShellWindowId_SystemModalContainer, NULL);
342  for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
343       cit != containers.end(); ++cit) {
344    for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
345         wit != (*cit)->children().end(); ++wit) {
346      if ((*wit)->GetProperty(aura::client::kModalKey) ==
347          ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
348        return true;
349      }
350    }
351  }
352  return false;
353}
354
355views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
356    views::Widget* widget) {
357  // Use translucent-style window frames for dialogs.
358  return new CustomFrameViewAsh(widget);
359}
360
361void Shell::RotateFocus(Direction direction) {
362  focus_cycler_->RotateFocus(direction == FORWARD ? FocusCycler::FORWARD
363                                                  : FocusCycler::BACKWARD);
364}
365
366void Shell::SetDisplayWorkAreaInsets(Window* contains,
367                                     const gfx::Insets& insets) {
368  if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
369          contains, insets)) {
370    return;
371  }
372  FOR_EACH_OBSERVER(ShellObserver, observers_,
373                    OnDisplayWorkAreaInsetsChanged());
374}
375
376void Shell::OnLoginStateChanged(user::LoginStatus status) {
377  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
378}
379
380void Shell::OnLoginUserProfilePrepared() {
381  CreateShelf();
382  CreateKeyboard();
383}
384
385void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
386  RootWindowControllerList controllers = GetAllRootWindowControllers();
387  for (RootWindowControllerList::iterator iter = controllers.begin();
388       iter != controllers.end(); ++iter)
389    (*iter)->UpdateAfterLoginStatusChange(status);
390}
391
392void Shell::OnAppTerminating() {
393  FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
394}
395
396void Shell::OnLockStateChanged(bool locked) {
397  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
398#ifndef NDEBUG
399  // Make sure that there is no system modal in Lock layer when unlocked.
400  if (!locked) {
401    std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
402        kShellWindowId_LockSystemModalContainer, GetPrimaryRootWindow());
403    for (std::vector<aura::Window*>::const_iterator iter = containers.begin();
404         iter != containers.end(); ++iter) {
405      DCHECK_EQ(0u, (*iter)->children().size());
406    }
407  }
408#endif
409}
410
411void Shell::OnCastingSessionStartedOrStopped(bool started) {
412#if defined(OS_CHROMEOS) && defined(USE_X11)
413  if (projecting_observer_)
414    projecting_observer_->OnCastingSessionStartedOrStopped(started);
415#endif
416}
417
418void Shell::OnOverviewModeStarting() {
419  FOR_EACH_OBSERVER(ShellObserver, observers_, OnOverviewModeStarting());
420}
421
422void Shell::OnOverviewModeEnding() {
423  FOR_EACH_OBSERVER(ShellObserver, observers_, OnOverviewModeEnding());
424}
425
426void Shell::OnMaximizeModeStarted() {
427  FOR_EACH_OBSERVER(ShellObserver, observers_, OnMaximizeModeStarted());
428}
429
430void Shell::OnMaximizeModeEnded() {
431  FOR_EACH_OBSERVER(ShellObserver, observers_, OnMaximizeModeEnded());
432}
433
434void Shell::OnRootWindowAdded(aura::Window* root_window) {
435  FOR_EACH_OBSERVER(ShellObserver, observers_, OnRootWindowAdded(root_window));
436}
437
438void Shell::CreateShelf() {
439  RootWindowControllerList controllers = GetAllRootWindowControllers();
440  for (RootWindowControllerList::iterator iter = controllers.begin();
441       iter != controllers.end(); ++iter)
442    (*iter)->shelf()->CreateShelf();
443}
444
445void Shell::OnShelfCreatedForRootWindow(aura::Window* root_window) {
446  FOR_EACH_OBSERVER(ShellObserver,
447                    observers_,
448                    OnShelfCreatedForRootWindow(root_window));
449}
450
451void Shell::CreateKeyboard() {
452  // TODO(bshe): Primary root window controller may not be the controller to
453  // attach virtual keyboard. See http://crbug.com/303429
454  InitKeyboard();
455  GetPrimaryRootWindowController()->
456      ActivateKeyboard(keyboard::KeyboardController::GetInstance());
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_->
489                ignore_display_configuration_updates()) ||
490           resolution_notification_controller_->DoesNotificationTimeout());
491}
492#endif
493
494void Shell::UpdateShelfVisibility() {
495  RootWindowControllerList controllers = GetAllRootWindowControllers();
496  for (RootWindowControllerList::iterator iter = controllers.begin();
497       iter != controllers.end(); ++iter)
498    if ((*iter)->shelf())
499      (*iter)->UpdateShelfVisibility();
500}
501
502void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
503                                     aura::Window* root_window) {
504  ash::ShelfLayoutManager::ForShelf(root_window)->SetAutoHideBehavior(behavior);
505}
506
507ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
508    aura::Window* root_window) const {
509  return ash::ShelfLayoutManager::ForShelf(root_window)->auto_hide_behavior();
510}
511
512void Shell::SetShelfAlignment(ShelfAlignment alignment,
513                              aura::Window* root_window) {
514  if (ash::ShelfLayoutManager::ForShelf(root_window)->SetAlignment(alignment)) {
515    FOR_EACH_OBSERVER(
516        ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
517  }
518}
519
520ShelfAlignment Shell::GetShelfAlignment(const aura::Window* root_window) {
521  return GetRootWindowController(root_window)
522      ->GetShelfLayoutManager()
523      ->GetAlignment();
524}
525
526void Shell::SetDimming(bool should_dim) {
527  RootWindowControllerList controllers = GetAllRootWindowControllers();
528  for (RootWindowControllerList::iterator iter = controllers.begin();
529       iter != controllers.end(); ++iter)
530    (*iter)->screen_dimmer()->SetDimming(should_dim);
531}
532
533void Shell::NotifyFullscreenStateChange(bool is_fullscreen,
534                                        aura::Window* root_window) {
535  FOR_EACH_OBSERVER(ShellObserver, observers_, OnFullscreenStateChanged(
536      is_fullscreen, root_window));
537}
538
539void Shell::CreateModalBackground(aura::Window* window) {
540  if (!modality_filter_) {
541    modality_filter_.reset(new SystemModalContainerEventFilter(this));
542    AddPreTargetHandler(modality_filter_.get());
543  }
544  RootWindowControllerList controllers = GetAllRootWindowControllers();
545  for (RootWindowControllerList::iterator iter = controllers.begin();
546       iter != controllers.end(); ++iter)
547    (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
548}
549
550void Shell::OnModalWindowRemoved(aura::Window* removed) {
551  RootWindowControllerList controllers = GetAllRootWindowControllers();
552  bool activated = false;
553  for (RootWindowControllerList::iterator iter = controllers.begin();
554       iter != controllers.end() && !activated; ++iter) {
555    activated = (*iter)->GetSystemModalLayoutManager(removed)->
556        ActivateNextModalWindow();
557  }
558  if (!activated) {
559    RemovePreTargetHandler(modality_filter_.get());
560    modality_filter_.reset();
561    for (RootWindowControllerList::iterator iter = controllers.begin();
562         iter != controllers.end(); ++iter)
563      (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
564  }
565}
566
567WebNotificationTray* Shell::GetWebNotificationTray() {
568  return GetPrimaryRootWindowController()->shelf()->
569      status_area_widget()->web_notification_tray();
570}
571
572bool Shell::HasPrimaryStatusArea() {
573  ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
574  return shelf && shelf->status_area_widget();
575}
576
577SystemTray* Shell::GetPrimarySystemTray() {
578  return GetPrimaryRootWindowController()->GetSystemTray();
579}
580
581ShelfDelegate* Shell::GetShelfDelegate() {
582  if (!shelf_delegate_) {
583    shelf_model_.reset(new ShelfModel);
584    // Creates ShelfItemDelegateManager before ShelfDelegate.
585    shelf_item_delegate_manager_.reset(
586        new ShelfItemDelegateManager(shelf_model_.get()));
587
588    shelf_delegate_.reset(delegate_->CreateShelfDelegate(shelf_model_.get()));
589    scoped_ptr<ShelfItemDelegate> controller(new AppListShelfItemDelegate);
590
591    // Finding the shelf model's location of the app list and setting its
592    // ShelfItemDelegate.
593    int app_list_index = shelf_model_->GetItemIndexForType(TYPE_APP_LIST);
594    DCHECK_GE(app_list_index, 0);
595    ShelfID app_list_id = shelf_model_->items()[app_list_index].id;
596    DCHECK(app_list_id);
597    shelf_item_delegate_manager_->SetShelfItemDelegate(app_list_id,
598                                                       controller.Pass());
599    shelf_window_watcher_.reset(new ShelfWindowWatcher(
600        shelf_model_.get(), shelf_item_delegate_manager_.get()));
601  }
602  return shelf_delegate_.get();
603}
604
605void Shell::SetTouchHudProjectionEnabled(bool enabled) {
606  if (is_touch_hud_projection_enabled_ == enabled)
607    return;
608
609  is_touch_hud_projection_enabled_ = enabled;
610  FOR_EACH_OBSERVER(ShellObserver, observers_,
611                    OnTouchHudProjectionToggled(enabled));
612}
613
614#if defined(OS_CHROMEOS)
615ash::FirstRunHelper* Shell::CreateFirstRunHelper() {
616  return new ash::FirstRunHelperImpl;
617}
618
619void Shell::SetCursorCompositingEnabled(bool enabled) {
620  display_controller_->cursor_window_controller()->SetCursorCompositingEnabled(
621      enabled);
622  native_cursor_manager_->SetNativeCursorEnabled(!enabled);
623}
624#endif  // defined(OS_CHROMEOS)
625
626void Shell::DoInitialWorkspaceAnimation() {
627  return GetPrimaryRootWindowController()->workspace_controller()->
628      DoInitialAnimation();
629}
630
631////////////////////////////////////////////////////////////////////////////////
632// Shell, private:
633
634Shell::Shell(ShellDelegate* delegate)
635    : target_root_window_(NULL),
636      scoped_target_root_window_(NULL),
637      delegate_(delegate),
638      window_positioner_(new WindowPositioner),
639      activation_client_(NULL),
640      accelerometer_controller_(new AccelerometerController()),
641#if defined(OS_CHROMEOS)
642      display_configurator_(new ui::DisplayConfigurator()),
643#endif  // defined(OS_CHROMEOS)
644      native_cursor_manager_(new AshNativeCursorManager),
645      cursor_manager_(
646          scoped_ptr< ::wm::NativeCursorManager>(native_cursor_manager_)),
647      simulate_modal_window_open_for_testing_(false),
648      is_touch_hud_projection_enabled_(false) {
649  DCHECK(delegate_.get());
650  gpu_support_.reset(delegate_->CreateGPUSupport());
651  display_manager_.reset(new DisplayManager);
652  display_controller_.reset(new DisplayController);
653#if defined(OS_CHROMEOS) && defined(USE_X11)
654  user_metrics_recorder_.reset(new UserMetricsRecorder);
655#endif  // defined(OS_CHROMEOS)
656
657#if defined(OS_CHROMEOS)
658  PowerStatus::Initialize();
659#endif
660}
661
662Shell::~Shell() {
663  TRACE_EVENT0("shutdown", "ash::Shell::Destructor");
664
665  delegate_->PreShutdown();
666
667  views::FocusManagerFactory::Install(NULL);
668
669  // Remove the focus from any window. This will prevent overhead and side
670  // effects (e.g. crashes) from changing focus during shutdown.
671  // See bug crbug.com/134502.
672  aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
673
674  // Please keep in same order as in Init() because it's easy to miss one.
675  if (window_modality_controller_)
676    window_modality_controller_.reset();
677#if defined(OS_CHROMEOS) && defined(USE_X11)
678  RemovePreTargetHandler(magnifier_key_scroll_handler_.get());
679  magnifier_key_scroll_handler_.reset();
680
681  RemovePreTargetHandler(speech_feedback_handler_.get());
682  speech_feedback_handler_.reset();
683#endif
684  RemovePreTargetHandler(user_activity_detector_.get());
685  RemovePreTargetHandler(overlay_filter_.get());
686  RemovePreTargetHandler(input_method_filter_.get());
687  RemovePreTargetHandler(accelerator_filter_.get());
688  RemovePreTargetHandler(event_transformation_handler_.get());
689  RemovePreTargetHandler(toplevel_window_event_handler_.get());
690  RemovePostTargetHandler(toplevel_window_event_handler_.get());
691  RemovePreTargetHandler(system_gesture_filter_.get());
692  RemovePreTargetHandler(keyboard_metrics_filter_.get());
693  RemovePreTargetHandler(mouse_cursor_filter_.get());
694
695  // TooltipController is deleted with the Shell so removing its references.
696  RemovePreTargetHandler(tooltip_controller_.get());
697
698  // Destroy maximize mode controller early on since it has some observers which
699  // need to be removed.
700  maximize_mode_controller_->Shutdown();
701  maximize_mode_controller_.reset();
702
703  // AppList needs to be released before shelf layout manager, which is
704  // destroyed with shelf container in the loop below. However, app list
705  // container is now on top of shelf container and released after it.
706  // TODO(xiyuan): Move it back when app list container is no longer needed.
707  app_list_controller_.reset();
708
709#if defined(OS_CHROMEOS)
710  // Destroy the LastWindowClosedLogoutReminder before the
711  // LogoutConfirmationController.
712  last_window_closed_logout_reminder_.reset();
713
714  // Destroy the LogoutConfirmationController before the SystemTrayDelegate.
715  logout_confirmation_controller_.reset();
716#endif
717
718  // Destroy SystemTrayDelegate before destroying the status area(s).
719  system_tray_delegate_->Shutdown();
720  system_tray_delegate_.reset();
721
722  locale_notification_controller_.reset();
723
724  // Drag-and-drop must be canceled prior to close all windows.
725  drag_drop_controller_.reset();
726
727  // Controllers who have WindowObserver added must be deleted
728  // before |display_controller_| is deleted.
729
730#if defined(OS_CHROMEOS)
731  // VideoActivityNotifier must be deleted before |video_detector_| is
732  // deleted because it's observing video activity through
733  // VideoDetectorObserver interface.
734  video_activity_notifier_.reset();
735#endif  // defined(OS_CHROMEOS)
736  video_detector_.reset();
737  high_contrast_controller_.reset();
738
739  shadow_controller_.reset();
740  resize_shadow_controller_.reset();
741
742  window_cycle_controller_.reset();
743  window_selector_controller_.reset();
744  mru_window_tracker_.reset();
745
746  // |shelf_window_watcher_| has a weak pointer to |shelf_Model_|
747  // and has window observers.
748  shelf_window_watcher_.reset();
749
750  // Destroy all child windows including widgets.
751  display_controller_->CloseChildWindows();
752  display_controller_->CloseNonDesktopDisplay();
753
754  // Chrome implementation of shelf delegate depends on FocusClient,
755  // so must be deleted before |focus_client_|.
756  shelf_delegate_.reset();
757  focus_client_.reset();
758
759  // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
760  // needs to remove observers from it.
761  system_tray_notifier_.reset();
762
763  // These need a valid Shell instance to clean up properly, so explicitly
764  // delete them before invalidating the instance.
765  // Alphabetical. TODO(oshima): sort.
766  magnification_controller_.reset();
767  partial_magnification_controller_.reset();
768  tooltip_controller_.reset();
769  event_client_.reset();
770  nested_accelerator_controller_.reset();
771  toplevel_window_event_handler_.reset();
772  visibility_controller_.reset();
773  // |shelf_item_delegate_manager_| observes |shelf_model_|. It must be
774  // destroyed before |shelf_model_| is destroyed.
775  shelf_item_delegate_manager_.reset();
776  shelf_model_.reset();
777
778  power_button_controller_.reset();
779  lock_state_controller_.reset();
780
781#if defined(OS_CHROMEOS)
782  resolution_notification_controller_.reset();
783#endif
784  desktop_background_controller_.reset();
785  mouse_cursor_filter_.reset();
786
787#if defined(OS_CHROMEOS) && defined(USE_X11)
788  touch_transformer_controller_.reset();
789#endif  // defined(OS_CHROMEOS) && defined(USE_X11)
790
791  // This also deletes all RootWindows. Note that we invoke Shutdown() on
792  // DisplayController before resetting |display_controller_|, since destruction
793  // of its owned RootWindowControllers relies on the value.
794  display_manager_->CreateScreenForShutdown();
795  display_controller_->Shutdown();
796  display_controller_.reset();
797  virtual_keyboard_controller_.reset();
798  screen_position_controller_.reset();
799  accessibility_delegate_.reset();
800  new_window_delegate_.reset();
801  media_delegate_.reset();
802
803  keyboard::KeyboardController::ResetInstance(NULL);
804
805#if defined(OS_CHROMEOS)
806  if (display_change_observer_)
807    display_configurator_->RemoveObserver(display_change_observer_.get());
808  if (display_configurator_animation_)
809    display_configurator_->RemoveObserver(
810        display_configurator_animation_.get());
811  if (display_error_observer_)
812    display_configurator_->RemoveObserver(display_error_observer_.get());
813  if (projecting_observer_)
814    display_configurator_->RemoveObserver(projecting_observer_.get());
815  display_change_observer_.reset();
816#endif  // defined(OS_CHROMEOS)
817
818#if defined(OS_CHROMEOS)
819  PowerStatus::Shutdown();
820#endif
821
822  DCHECK(instance_ == this);
823  instance_ = NULL;
824}
825
826void Shell::Init(const ShellInitParams& init_params) {
827  delegate_->PreInit();
828  bool display_initialized = display_manager_->InitFromCommandLine();
829#if defined(OS_CHROMEOS)
830  display_configurator_->Init(!gpu_support_->IsPanelFittingDisabled());
831  display_configurator_animation_.reset(new DisplayConfiguratorAnimation());
832  display_configurator_->AddObserver(display_configurator_animation_.get());
833
834  projecting_observer_.reset(new ProjectingObserver());
835  display_configurator_->AddObserver(projecting_observer_.get());
836
837  if (!display_initialized && base::SysInfo::IsRunningOnChromeOS()) {
838    display_change_observer_.reset(new DisplayChangeObserver);
839    // Register |display_change_observer_| first so that the rest of
840    // observer gets invoked after the root windows are configured.
841    display_configurator_->AddObserver(display_change_observer_.get());
842    display_error_observer_.reset(new DisplayErrorObserver());
843    display_configurator_->AddObserver(display_error_observer_.get());
844    display_configurator_->set_state_controller(display_change_observer_.get());
845    display_configurator_->set_mirroring_controller(display_manager_.get());
846    display_configurator_->ForceInitialConfigure(
847        delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
848    display_initialized = true;
849  }
850#endif  // defined(OS_CHROMEOS)
851  if (!display_initialized)
852    display_manager_->InitDefaultDisplay();
853
854  display_manager_->InitFontParams();
855
856  // Install the custom factory first so that views::FocusManagers for Tray,
857  // Shelf, and WallPaper could be created by the factory.
858  views::FocusManagerFactory::Install(new AshFocusManagerFactory);
859
860  aura::Env::CreateInstance(true);
861  aura::Env::GetInstance()->set_context_factory(init_params.context_factory);
862
863  // The WindowModalityController needs to be at the front of the input event
864  // pretarget handler list to ensure that it processes input events when modal
865  // windows are active.
866  window_modality_controller_.reset(
867      new ::wm::WindowModalityController(this));
868
869  env_filter_.reset(new ::wm::CompoundEventFilter);
870  AddPreTargetHandler(env_filter_.get());
871
872  ::wm::FocusController* focus_controller =
873      new ::wm::FocusController(new wm::AshFocusRules);
874  focus_client_.reset(focus_controller);
875  activation_client_ = focus_controller;
876  activation_client_->AddObserver(this);
877  focus_cycler_.reset(new FocusCycler());
878
879  screen_position_controller_.reset(new ScreenPositionController);
880
881  display_controller_->Start();
882  display_controller_->CreatePrimaryHost(
883      ShellInitParamsToAshWindowTreeHostInitParams(init_params));
884  virtual_keyboard_controller_.reset(new VirtualKeyboardController);
885  aura::Window* root_window = display_controller_->GetPrimaryRootWindow();
886  target_root_window_ = root_window;
887
888#if defined(OS_CHROMEOS)
889  resolution_notification_controller_.reset(
890      new ResolutionNotificationController);
891#endif
892
893  cursor_manager_.SetDisplay(GetScreen()->GetPrimaryDisplay());
894
895  nested_accelerator_controller_.reset(
896      new ::wm::NestedAcceleratorController(new NestedAcceleratorDelegate));
897  accelerator_controller_.reset(new AcceleratorController);
898  maximize_mode_controller_.reset(new MaximizeModeController());
899
900#if defined(OS_CHROMEOS) && defined(USE_X11)
901  magnifier_key_scroll_handler_ = MagnifierKeyScroller::CreateHandler().Pass();
902  AddPreTargetHandler(magnifier_key_scroll_handler_.get());
903  speech_feedback_handler_ = SpokenFeedbackToggler::CreateHandler().Pass();
904  AddPreTargetHandler(speech_feedback_handler_.get());
905#endif
906
907  // The order in which event filters are added is significant.
908
909  // wm::UserActivityDetector passes events to observers, so let them get
910  // rewritten first.
911  user_activity_detector_.reset(new ::wm::UserActivityDetector);
912  AddPreTargetHandler(user_activity_detector_.get());
913
914  overlay_filter_.reset(new OverlayEventFilter);
915  AddPreTargetHandler(overlay_filter_.get());
916  AddShellObserver(overlay_filter_.get());
917
918  input_method_filter_.reset(new ::wm::InputMethodEventFilter(
919      root_window->GetHost()->GetAcceleratedWidget()));
920  AddPreTargetHandler(input_method_filter_.get());
921
922  accelerator_filter_.reset(new ::wm::AcceleratorFilter(
923      scoped_ptr< ::wm::AcceleratorDelegate>(new AcceleratorDelegate).Pass()));
924  AddPreTargetHandler(accelerator_filter_.get());
925
926  event_transformation_handler_.reset(new EventTransformationHandler);
927  AddPreTargetHandler(event_transformation_handler_.get());
928
929  toplevel_window_event_handler_.reset(new ToplevelWindowEventHandler);
930
931  system_gesture_filter_.reset(new SystemGestureEventFilter);
932  AddPreTargetHandler(system_gesture_filter_.get());
933
934  keyboard_metrics_filter_.reset(new KeyboardUMAEventFilter);
935  AddPreTargetHandler(keyboard_metrics_filter_.get());
936
937  // The keyboard system must be initialized before the RootWindowController is
938  // created.
939#if defined(OS_CHROMEOS)
940    keyboard::InitializeKeyboard();
941#endif
942
943#if defined(OS_CHROMEOS)
944  sticky_keys_controller_.reset(new StickyKeysController);
945#endif
946
947  lock_state_controller_.reset(new LockStateController);
948  power_button_controller_.reset(new PowerButtonController(
949      lock_state_controller_.get()));
950#if defined(OS_CHROMEOS)
951  // Pass the initial display state to PowerButtonController.
952  power_button_controller_->OnDisplayModeChanged(
953      display_configurator_->cached_displays());
954#endif
955  AddShellObserver(lock_state_controller_.get());
956
957  drag_drop_controller_.reset(new DragDropController);
958  mouse_cursor_filter_.reset(new MouseCursorEventFilter());
959  PrependPreTargetHandler(mouse_cursor_filter_.get());
960
961  // Create Controllers that may need root window.
962  // TODO(oshima): Move as many controllers before creating
963  // RootWindowController as possible.
964  visibility_controller_.reset(new AshVisibilityController);
965
966  magnification_controller_.reset(
967      MagnificationController::CreateInstance());
968  mru_window_tracker_.reset(new MruWindowTracker(activation_client_));
969
970  partial_magnification_controller_.reset(
971      new PartialMagnificationController());
972
973  autoclick_controller_.reset(AutoclickController::CreateInstance());
974
975  high_contrast_controller_.reset(new HighContrastController);
976  video_detector_.reset(new VideoDetector);
977  window_selector_controller_.reset(new WindowSelectorController());
978  window_cycle_controller_.reset(new WindowCycleController());
979
980  tooltip_controller_.reset(
981      new views::corewm::TooltipController(
982          scoped_ptr<views::corewm::Tooltip>(
983              new views::corewm::TooltipAura(gfx::SCREEN_TYPE_ALTERNATE))));
984  AddPreTargetHandler(tooltip_controller_.get());
985
986  event_client_.reset(new EventClientImpl);
987
988  // This controller needs to be set before SetupManagedWindowMode.
989  desktop_background_controller_.reset(new DesktopBackgroundController());
990  user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
991
992  session_state_delegate_.reset(delegate_->CreateSessionStateDelegate());
993  accessibility_delegate_.reset(delegate_->CreateAccessibilityDelegate());
994  new_window_delegate_.reset(delegate_->CreateNewWindowDelegate());
995  media_delegate_.reset(delegate_->CreateMediaDelegate());
996
997  resize_shadow_controller_.reset(new ResizeShadowController());
998  shadow_controller_.reset(
999      new ::wm::ShadowController(activation_client_));
1000
1001  // Create system_tray_notifier_ before the delegate.
1002  system_tray_notifier_.reset(new ash::SystemTrayNotifier());
1003
1004  // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
1005  system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
1006  DCHECK(system_tray_delegate_.get());
1007
1008  locale_notification_controller_.reset(new LocaleNotificationController);
1009
1010  // Initialize system_tray_delegate_ after StatusAreaWidget is created.
1011  system_tray_delegate_->Initialize();
1012
1013#if defined(OS_CHROMEOS)
1014  // Create the LogoutConfirmationController after the SystemTrayDelegate.
1015  logout_confirmation_controller_.reset(new LogoutConfirmationController(
1016      base::Bind(&SystemTrayDelegate::SignOut,
1017                 base::Unretained(system_tray_delegate_.get()))));
1018#endif
1019
1020#if defined(OS_CHROMEOS) && defined(USE_X11)
1021  // Create TouchTransformerController before DisplayController::InitDisplays()
1022  // since TouchTransformerController listens on
1023  // DisplayController::Observer::OnDisplaysInitialized().
1024  touch_transformer_controller_.reset(new TouchTransformerController());
1025#endif  // defined(OS_CHROMEOS) && defined(USE_X11)
1026
1027  display_controller_->InitDisplays();
1028
1029  // It needs to be created after RootWindowController has been created
1030  // (which calls OnWindowResized has been called, otherwise the
1031  // widget will not paint when restoring after a browser crash.  Also it needs
1032  // to be created after InitSecondaryDisplays() to initialize the wallpapers in
1033  // the correct size.
1034  user_wallpaper_delegate_->InitializeWallpaper();
1035
1036  if (initially_hide_cursor_)
1037    cursor_manager_.HideCursor();
1038  cursor_manager_.SetCursor(ui::kCursorPointer);
1039
1040#if defined(OS_CHROMEOS)
1041  // Set accelerator controller delegates.
1042  accelerator_controller_->SetBrightnessControlDelegate(
1043      scoped_ptr<ash::BrightnessControlDelegate>(
1044          new ash::system::BrightnessControllerChromeos).Pass());
1045
1046  power_event_observer_.reset(new PowerEventObserver());
1047  user_activity_notifier_.reset(
1048      new ui::UserActivityPowerManagerNotifier(user_activity_detector_.get()));
1049  video_activity_notifier_.reset(
1050      new VideoActivityNotifier(video_detector_.get()));
1051  bluetooth_notification_controller_.reset(new BluetoothNotificationController);
1052  last_window_closed_logout_reminder_.reset(new LastWindowClosedLogoutReminder);
1053#endif
1054
1055  weak_display_manager_factory_.reset(
1056      new base::WeakPtrFactory<DisplayManager>(display_manager_.get()));
1057  // The compositor thread and main message loop have to be running in
1058  // order to create mirror window. Run it after the main message loop
1059  // is started.
1060  base::MessageLoopForUI::current()->PostTask(
1061      FROM_HERE,
1062      base::Bind(&DisplayManager::CreateMirrorWindowIfAny,
1063                 weak_display_manager_factory_->GetWeakPtr()));
1064}
1065
1066void Shell::InitKeyboard() {
1067  if (keyboard::IsKeyboardEnabled()) {
1068    if (keyboard::KeyboardController::GetInstance()) {
1069      RootWindowControllerList controllers = GetAllRootWindowControllers();
1070      for (RootWindowControllerList::iterator iter = controllers.begin();
1071           iter != controllers.end(); ++iter) {
1072        (*iter)->DeactivateKeyboard(
1073            keyboard::KeyboardController::GetInstance());
1074      }
1075    }
1076    keyboard::KeyboardControllerProxy* proxy =
1077        delegate_->CreateKeyboardControllerProxy();
1078    keyboard::KeyboardController::ResetInstance(
1079        new keyboard::KeyboardController(proxy));
1080  }
1081}
1082
1083void Shell::InitRootWindow(aura::Window* root_window) {
1084  DCHECK(activation_client_);
1085  DCHECK(visibility_controller_.get());
1086  DCHECK(drag_drop_controller_.get());
1087
1088  aura::client::SetFocusClient(root_window, focus_client_.get());
1089  input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
1090  aura::client::SetActivationClient(root_window, activation_client_);
1091  ::wm::FocusController* focus_controller =
1092      static_cast< ::wm::FocusController*>(activation_client_);
1093  root_window->AddPreTargetHandler(focus_controller);
1094  aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
1095  aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
1096  aura::client::SetScreenPositionClient(root_window,
1097                                        screen_position_controller_.get());
1098  aura::client::SetCursorClient(root_window, &cursor_manager_);
1099  aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
1100  aura::client::SetEventClient(root_window, event_client_.get());
1101
1102  aura::client::SetWindowMoveClient(root_window,
1103      toplevel_window_event_handler_.get());
1104  root_window->AddPreTargetHandler(toplevel_window_event_handler_.get());
1105  root_window->AddPostTargetHandler(toplevel_window_event_handler_.get());
1106
1107  if (nested_accelerator_controller_) {
1108    aura::client::SetDispatcherClient(root_window,
1109                                      nested_accelerator_controller_.get());
1110  }
1111}
1112
1113bool Shell::CanWindowReceiveEvents(aura::Window* window) {
1114  RootWindowControllerList controllers = GetAllRootWindowControllers();
1115  for (RootWindowControllerList::iterator iter = controllers.begin();
1116       iter != controllers.end(); ++iter) {
1117    SystemModalContainerLayoutManager* layout_manager =
1118        (*iter)->GetSystemModalLayoutManager(window);
1119    if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
1120      return true;
1121    // Allow events to fall through to the virtual keyboard even if displaying
1122    // a system modal dialog.
1123    if ((*iter)->IsVirtualKeyboardWindow(window))
1124      return true;
1125  }
1126
1127  return false;
1128}
1129
1130////////////////////////////////////////////////////////////////////////////////
1131// Shell, ui::EventTarget overrides:
1132
1133bool Shell::CanAcceptEvent(const ui::Event& event) {
1134  return true;
1135}
1136
1137ui::EventTarget* Shell::GetParentTarget() {
1138  return aura::Env::GetInstance();
1139}
1140
1141scoped_ptr<ui::EventTargetIterator> Shell::GetChildIterator() const {
1142  return scoped_ptr<ui::EventTargetIterator>();
1143}
1144
1145ui::EventTargeter* Shell::GetEventTargeter() {
1146  NOTREACHED();
1147  return NULL;
1148}
1149
1150void Shell::OnEvent(ui::Event* event) {
1151}
1152
1153////////////////////////////////////////////////////////////////////////////////
1154// Shell, aura::client::ActivationChangeObserver implementation:
1155
1156void Shell::OnWindowActivated(aura::Window* gained_active,
1157                              aura::Window* lost_active) {
1158  if (gained_active)
1159    target_root_window_ = gained_active->GetRootWindow();
1160}
1161
1162}  // namespace ash
1163