shell.cc revision 68043e1e95eeb07d5cae7aca370b26518b0867d6 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "ash/shell.h"
6
7#include <algorithm>
8#include <string>
9
10#include "ash/accelerators/accelerator_controller.h"
11#include "ash/accelerators/accelerator_filter.h"
12#include "ash/accelerators/focus_manager_factory.h"
13#include "ash/accelerators/nested_dispatcher_controller.h"
14#include "ash/ash_switches.h"
15#include "ash/caps_lock_delegate.h"
16#include "ash/desktop_background/desktop_background_controller.h"
17#include "ash/desktop_background/desktop_background_view.h"
18#include "ash/desktop_background/user_wallpaper_delegate.h"
19#include "ash/display/display_controller.h"
20#include "ash/display/display_manager.h"
21#include "ash/display/event_transformation_handler.h"
22#include "ash/display/mouse_cursor_event_filter.h"
23#include "ash/display/resolution_notification_controller.h"
24#include "ash/display/screen_position_controller.h"
25#include "ash/drag_drop/drag_drop_controller.h"
26#include "ash/focus_cycler.h"
27#include "ash/high_contrast/high_contrast_controller.h"
28#include "ash/host/root_window_host_factory.h"
29#include "ash/launcher/launcher_delegate.h"
30#include "ash/launcher/launcher_item_delegate.h"
31#include "ash/launcher/launcher_item_delegate_manager.h"
32#include "ash/launcher/launcher_model.h"
33#include "ash/magnifier/magnification_controller.h"
34#include "ash/magnifier/partial_magnification_controller.h"
35#include "ash/root_window_controller.h"
36#include "ash/screen_ash.h"
37#include "ash/session_state_delegate.h"
38#include "ash/shelf/app_list_shelf_item_delegate.h"
39#include "ash/shelf/shelf_layout_manager.h"
40#include "ash/shelf/shelf_widget.h"
41#include "ash/shell_delegate.h"
42#include "ash/shell_factory.h"
43#include "ash/shell_window_ids.h"
44#include "ash/system/locale/locale_notification_controller.h"
45#include "ash/system/status_area_widget.h"
46#include "ash/system/tray/system_tray_delegate.h"
47#include "ash/system/tray/system_tray_notifier.h"
48#include "ash/wm/app_list_controller.h"
49#include "ash/wm/ash_focus_rules.h"
50#include "ash/wm/ash_native_cursor_manager.h"
51#include "ash/wm/base_layout_manager.h"
52#include "ash/wm/coordinate_conversion.h"
53#include "ash/wm/custom_frame_view_ash.h"
54#include "ash/wm/event_client_impl.h"
55#include "ash/wm/event_rewriter_event_filter.h"
56#include "ash/wm/lock_state_controller.h"
57#include "ash/wm/lock_state_controller_impl2.h"
58#include "ash/wm/mru_window_tracker.h"
59#include "ash/wm/overlay_event_filter.h"
60#include "ash/wm/overview/window_selector_controller.h"
61#include "ash/wm/power_button_controller.h"
62#include "ash/wm/resize_shadow_controller.h"
63#include "ash/wm/root_window_layout_manager.h"
64#include "ash/wm/screen_dimmer.h"
65#include "ash/wm/session_state_controller_impl.h"
66#include "ash/wm/system_gesture_event_filter.h"
67#include "ash/wm/system_modal_container_event_filter.h"
68#include "ash/wm/system_modal_container_layout_manager.h"
69#include "ash/wm/user_activity_detector.h"
70#include "ash/wm/video_detector.h"
71#include "ash/wm/window_animations.h"
72#include "ash/wm/window_cycle_controller.h"
73#include "ash/wm/window_properties.h"
74#include "ash/wm/window_util.h"
75#include "ash/wm/workspace_controller.h"
76#include "base/bind.h"
77#include "base/command_line.h"
78#include "base/debug/leak_annotations.h"
79#include "base/debug/trace_event.h"
80#include "ui/aura/client/aura_constants.h"
81#include "ui/aura/client/user_action_client.h"
82#include "ui/aura/env.h"
83#include "ui/aura/focus_manager.h"
84#include "ui/aura/layout_manager.h"
85#include "ui/aura/root_window.h"
86#include "ui/aura/window.h"
87#include "ui/base/ui_base_switches.h"
88#include "ui/compositor/layer.h"
89#include "ui/compositor/layer_animator.h"
90#include "ui/gfx/display.h"
91#include "ui/gfx/image/image_skia.h"
92#include "ui/gfx/screen.h"
93#include "ui/gfx/size.h"
94#include "ui/keyboard/keyboard.h"
95#include "ui/keyboard/keyboard_util.h"
96#include "ui/message_center/message_center.h"
97#include "ui/views/corewm/compound_event_filter.h"
98#include "ui/views/corewm/corewm_switches.h"
99#include "ui/views/corewm/focus_controller.h"
100#include "ui/views/corewm/input_method_event_filter.h"
101#include "ui/views/corewm/shadow_controller.h"
102#include "ui/views/corewm/tooltip_controller.h"
103#include "ui/views/corewm/visibility_controller.h"
104#include "ui/views/corewm/window_modality_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
109#if defined(OS_CHROMEOS)
110#if defined(USE_X11)
111#include "ash/ash_constants.h"
112#include "ash/display/display_change_observer_chromeos.h"
113#include "ash/display/display_error_observer_chromeos.h"
114#include "ash/display/output_configurator_animation.h"
115#include "base/chromeos/chromeos_version.h"
116#include "base/message_loop/message_pump_x11.h"
117#include "chromeos/display/output_configurator.h"
118#include "content/public/browser/gpu_data_manager.h"
119#include "gpu/config/gpu_feature_type.h"
120#endif  // defined(USE_X11)
121#include "ash/system/chromeos/power/power_status.h"
122#endif  // defined(OS_CHROMEOS)
123
124namespace ash {
125
126namespace {
127
128using aura::Window;
129using views::Widget;
130
131// A Corewm VisibilityController subclass that calls the Ash animation routine
132// so we can pick up our extended animations. See ash/wm/window_animations.h.
133class AshVisibilityController : public views::corewm::VisibilityController {
134 public:
135  AshVisibilityController() {}
136  virtual ~AshVisibilityController() {}
137
138 private:
139  // Overridden from views::corewm::VisibilityController:
140  virtual bool CallAnimateOnChildWindowVisibilityChanged(
141      aura::Window* window,
142      bool visible) OVERRIDE {
143    return AnimateOnChildWindowVisibilityChanged(window, visible);
144  }
145
146  DISALLOW_COPY_AND_ASSIGN(AshVisibilityController);
147};
148
149}  // namespace
150
151// static
152Shell* Shell::instance_ = NULL;
153// static
154bool Shell::initially_hide_cursor_ = false;
155
156////////////////////////////////////////////////////////////////////////////////
157// Shell, public:
158
159Shell::Shell(ShellDelegate* delegate)
160    : screen_(new ScreenAsh),
161      target_root_window_(NULL),
162      scoped_target_root_window_(NULL),
163      delegate_(delegate),
164      activation_client_(NULL),
165#if defined(OS_CHROMEOS) && defined(USE_X11)
166      output_configurator_(new chromeos::OutputConfigurator()),
167#endif  // defined(OS_CHROMEOS)
168      native_cursor_manager_(new AshNativeCursorManager),
169      cursor_manager_(scoped_ptr<views::corewm::NativeCursorManager>(
170          native_cursor_manager_)),
171      browser_context_(NULL),
172      simulate_modal_window_open_for_testing_(false),
173      is_touch_hud_projection_enabled_(false) {
174  DCHECK(delegate_.get());
175  display_manager_.reset(new internal::DisplayManager);
176
177  ANNOTATE_LEAKING_OBJECT_PTR(screen_);  // see crbug.com/156466
178  gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE, screen_);
179  if (!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE))
180    gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_);
181  display_controller_.reset(new DisplayController);
182#if defined(OS_CHROMEOS) && defined(USE_X11)
183  bool is_panel_fitting_disabled =
184      content::GpuDataManager::GetInstance()->IsFeatureBlacklisted(
185          gpu::GPU_FEATURE_TYPE_PANEL_FITTING);
186
187  output_configurator_->Init(!is_panel_fitting_disabled);
188
189  base::MessagePumpX11::Current()->AddDispatcherForRootWindow(
190      output_configurator());
191  // We can't do this with a root window listener because XI_HierarchyChanged
192  // messages don't have a target window.
193  base::MessagePumpX11::Current()->AddObserver(output_configurator());
194#endif  // defined(OS_CHROMEOS)
195  AddPreTargetHandler(this);
196
197#if defined(OS_CHROMEOS)
198  internal::PowerStatus::Initialize();
199#endif
200}
201
202Shell::~Shell() {
203  TRACE_EVENT0("shutdown", "ash::Shell::Destructor");
204
205  views::FocusManagerFactory::Install(NULL);
206
207  // Remove the focus from any window. This will prevent overhead and side
208  // effects (e.g. crashes) from changing focus during shutdown.
209  // See bug crbug.com/134502.
210  aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
211
212  // Please keep in same order as in Init() because it's easy to miss one.
213  RemovePreTargetHandler(event_rewriter_filter_.get());
214  RemovePreTargetHandler(user_activity_detector_.get());
215  RemovePreTargetHandler(overlay_filter_.get());
216  RemovePreTargetHandler(input_method_filter_.get());
217  RemovePreTargetHandler(window_modality_controller_.get());
218  if (mouse_cursor_filter_)
219    RemovePreTargetHandler(mouse_cursor_filter_.get());
220  RemovePreTargetHandler(system_gesture_filter_.get());
221  RemovePreTargetHandler(event_transformation_handler_.get());
222  RemovePreTargetHandler(accelerator_filter_.get());
223
224  // TooltipController is deleted with the Shell so removing its references.
225  RemovePreTargetHandler(tooltip_controller_.get());
226
227  // AppList needs to be released before shelf layout manager, which is
228  // destroyed with launcher container in the loop below. However, app list
229  // container is now on top of launcher container and released after it.
230  // TODO(xiyuan): Move it back when app list container is no longer needed.
231  app_list_controller_.reset();
232
233  // Destroy SystemTrayDelegate before destroying the status area(s).
234  system_tray_delegate_->Shutdown();
235  system_tray_delegate_.reset();
236
237  locale_notification_controller_.reset();
238
239  // Drag-and-drop must be canceled prior to close all windows.
240  drag_drop_controller_.reset();
241
242  // Destroy all child windows including widgets.
243  display_controller_->CloseChildWindows();
244
245  // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
246  // needs to remove observers from it.
247  system_tray_notifier_.reset();
248
249  // These need a valid Shell instance to clean up properly, so explicitly
250  // delete them before invalidating the instance.
251  // Alphabetical. TODO(oshima): sort.
252  magnification_controller_.reset();
253  partial_magnification_controller_.reset();
254  resize_shadow_controller_.reset();
255  shadow_controller_.reset();
256  tooltip_controller_.reset();
257  event_client_.reset();
258  window_cycle_controller_.reset();
259  nested_dispatcher_controller_.reset();
260  user_action_client_.reset();
261  visibility_controller_.reset();
262  launcher_delegate_.reset();
263  launcher_model_.reset();
264  video_detector_.reset();
265
266  power_button_controller_.reset();
267  lock_state_controller_.reset();
268  mru_window_tracker_.reset();
269
270  resolution_notification_controller_.reset();
271  desktop_background_controller_.reset();
272
273  // This also deletes all RootWindows. Note that we invoke Shutdown() on
274  // DisplayController before resetting |display_controller_|, since destruction
275  // of its owned RootWindowControllers relies on the value.
276  display_controller_->Shutdown();
277  display_controller_.reset();
278  screen_position_controller_.reset();
279
280#if defined(OS_CHROMEOS) && defined(USE_X11)
281   if (display_change_observer_)
282    output_configurator_->RemoveObserver(display_change_observer_.get());
283  if (output_configurator_animation_)
284    output_configurator_->RemoveObserver(output_configurator_animation_.get());
285  if (display_error_observer_)
286    output_configurator_->RemoveObserver(display_error_observer_.get());
287  base::MessagePumpX11::Current()->RemoveDispatcherForRootWindow(
288      output_configurator());
289  base::MessagePumpX11::Current()->RemoveObserver(output_configurator());
290  display_change_observer_.reset();
291#endif  // defined(OS_CHROMEOS)
292
293#if defined(OS_CHROMEOS)
294  internal::PowerStatus::Shutdown();
295#endif
296
297  DCHECK(instance_ == this);
298  instance_ = NULL;
299}
300
301// static
302Shell* Shell::CreateInstance(ShellDelegate* delegate) {
303  CHECK(!instance_);
304  instance_ = new Shell(delegate);
305  instance_->Init();
306  return instance_;
307}
308
309// static
310Shell* Shell::GetInstance() {
311  DCHECK(instance_);
312  return instance_;
313}
314
315// static
316bool Shell::HasInstance() {
317  return !!instance_;
318}
319
320// static
321void Shell::DeleteInstance() {
322  delete instance_;
323  instance_ = NULL;
324}
325
326// static
327internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
328  return internal::GetRootWindowController(GetPrimaryRootWindow());
329}
330
331// static
332Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
333  return Shell::GetInstance()->display_controller()->
334      GetAllRootWindowControllers();
335}
336
337// static
338aura::RootWindow* Shell::GetPrimaryRootWindow() {
339  return GetInstance()->display_controller()->GetPrimaryRootWindow();
340}
341
342// static
343aura::RootWindow* Shell::GetTargetRootWindow() {
344  Shell* shell = GetInstance();
345  if (shell->scoped_target_root_window_)
346    return shell->scoped_target_root_window_;
347  return shell->target_root_window_;
348}
349
350// static
351gfx::Screen* Shell::GetScreen() {
352  return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
353}
354
355// static
356Shell::RootWindowList Shell::GetAllRootWindows() {
357  return Shell::GetInstance()->display_controller()->
358      GetAllRootWindows();
359}
360
361// static
362aura::Window* Shell::GetContainer(aura::RootWindow* root_window,
363                                  int container_id) {
364  return root_window->GetChildById(container_id);
365}
366
367// static
368const aura::Window* Shell::GetContainer(const aura::RootWindow* root_window,
369                                        int container_id) {
370  return root_window->GetChildById(container_id);
371}
372
373// static
374std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
375    int container_id,
376    aura::RootWindow* priority_root) {
377  std::vector<aura::Window*> containers;
378  RootWindowList root_windows = GetAllRootWindows();
379  for (RootWindowList::const_iterator it = root_windows.begin();
380       it != root_windows.end(); ++it) {
381    aura::Window* container = (*it)->GetChildById(container_id);
382    if (container) {
383      if (priority_root && priority_root->Contains(container))
384        containers.insert(containers.begin(), container);
385      else
386        containers.push_back(container);
387    }
388  }
389  return containers;
390}
391
392// static
393bool Shell::IsForcedMaximizeMode() {
394  CommandLine* command_line = CommandLine::ForCurrentProcess();
395  return command_line->HasSwitch(switches::kForcedMaximizeMode);
396}
397
398void Shell::Init() {
399  CommandLine* command_line = CommandLine::ForCurrentProcess();
400
401  delegate_->PreInit();
402  bool display_initialized = false;
403#if defined(OS_CHROMEOS) && defined(USE_X11)
404  output_configurator_animation_.reset(
405      new internal::OutputConfiguratorAnimation());
406  output_configurator_->AddObserver(output_configurator_animation_.get());
407  if (base::chromeos::IsRunningOnChromeOS()) {
408    display_change_observer_.reset(new internal::DisplayChangeObserver);
409    // Register |display_change_observer_| first so that the rest of
410    // observer gets invoked after the root windows are configured.
411    output_configurator_->AddObserver(display_change_observer_.get());
412    display_error_observer_.reset(new internal::DisplayErrorObserver());
413    output_configurator_->AddObserver(display_error_observer_.get());
414    output_configurator_->set_state_controller(display_change_observer_.get());
415    if (!command_line->HasSwitch(ash::switches::kAshDisableSoftwareMirroring))
416      output_configurator_->set_mirroring_controller(display_manager_.get());
417    output_configurator_->Start(
418        delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
419    display_initialized = true;
420  }
421#endif  // defined(OS_CHROMEOS) && defined(USE_X11)
422  if (!display_initialized)
423    display_manager_->InitFromCommandLine();
424
425  // Install the custom factory first so that views::FocusManagers for Tray,
426  // Launcher, and WallPaper could be created by the factory.
427  views::FocusManagerFactory::Install(new AshFocusManagerFactory);
428
429  env_filter_.reset(new views::corewm::CompoundEventFilter);
430  AddPreTargetHandler(env_filter_.get());
431
432  // Env creates the compositor. Historically it seems to have been implicitly
433  // initialized first by the ActivationController, but now that FocusController
434  // no longer does this we need to do it explicitly.
435  aura::Env::GetInstance();
436  views::corewm::FocusController* focus_controller =
437      new views::corewm::FocusController(new wm::AshFocusRules);
438  focus_client_.reset(focus_controller);
439  activation_client_ = focus_controller;
440  activation_client_->AddObserver(this);
441  focus_cycler_.reset(new internal::FocusCycler());
442
443  screen_position_controller_.reset(new internal::ScreenPositionController);
444  root_window_host_factory_.reset(delegate_->CreateRootWindowHostFactory());
445
446  display_controller_->Start();
447  display_controller_->InitPrimaryDisplay();
448  aura::RootWindow* root_window = display_controller_->GetPrimaryRootWindow();
449  target_root_window_ = root_window;
450
451  resolution_notification_controller_.reset(
452      new internal::ResolutionNotificationController);
453
454  cursor_manager_.SetDisplay(DisplayController::GetPrimaryDisplay());
455
456  nested_dispatcher_controller_.reset(new NestedDispatcherController);
457  accelerator_controller_.reset(new AcceleratorController);
458
459  // The order in which event filters are added is significant.
460  event_rewriter_filter_.reset(new internal::EventRewriterEventFilter);
461  AddPreTargetHandler(event_rewriter_filter_.get());
462
463  // UserActivityDetector passes events to observers, so let them get
464  // rewritten first.
465  user_activity_detector_.reset(new UserActivityDetector);
466  AddPreTargetHandler(user_activity_detector_.get());
467
468  overlay_filter_.reset(new internal::OverlayEventFilter);
469  AddPreTargetHandler(overlay_filter_.get());
470  AddShellObserver(overlay_filter_.get());
471
472  input_method_filter_.reset(new views::corewm::InputMethodEventFilter(
473                                 root_window->GetAcceleratedWidget()));
474  AddPreTargetHandler(input_method_filter_.get());
475
476  accelerator_filter_.reset(new internal::AcceleratorFilter);
477  AddPreTargetHandler(accelerator_filter_.get());
478
479  event_transformation_handler_.reset(new internal::EventTransformationHandler);
480  AddPreTargetHandler(event_transformation_handler_.get());
481
482  system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
483  AddPreTargetHandler(system_gesture_filter_.get());
484
485  // The keyboard system must be initialized before the RootWindowController is
486  // created.
487  if (keyboard::IsKeyboardEnabled())
488    keyboard::InitializeKeyboard();
489
490  if (command_line->HasSwitch(ash::switches::kAshDisableNewLockAnimations))
491    lock_state_controller_.reset(new SessionStateControllerImpl);
492  else
493    lock_state_controller_.reset(new LockStateControllerImpl2);
494  power_button_controller_.reset(new PowerButtonController(
495      lock_state_controller_.get()));
496  AddShellObserver(lock_state_controller_.get());
497
498  drag_drop_controller_.reset(new internal::DragDropController);
499  mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
500  PrependPreTargetHandler(mouse_cursor_filter_.get());
501
502  // Create Controllers that may need root window.
503  // TODO(oshima): Move as many controllers before creating
504  // RootWindowController as possible.
505  visibility_controller_.reset(new AshVisibilityController);
506  user_action_client_.reset(delegate_->CreateUserActionClient());
507  window_modality_controller_.reset(
508      new views::corewm::WindowModalityController);
509  AddPreTargetHandler(window_modality_controller_.get());
510
511  magnification_controller_.reset(
512      MagnificationController::CreateInstance());
513  mru_window_tracker_.reset(new MruWindowTracker(activation_client_));
514
515  partial_magnification_controller_.reset(
516      new PartialMagnificationController());
517
518  high_contrast_controller_.reset(new HighContrastController);
519  video_detector_.reset(new VideoDetector);
520  window_cycle_controller_.reset(new WindowCycleController());
521  window_selector_controller_.reset(new WindowSelectorController());
522
523  tooltip_controller_.reset(new views::corewm::TooltipController(
524                                gfx::SCREEN_TYPE_ALTERNATE));
525  AddPreTargetHandler(tooltip_controller_.get());
526
527  event_client_.reset(new internal::EventClientImpl);
528
529  // This controller needs to be set before SetupManagedWindowMode.
530  desktop_background_controller_.reset(new DesktopBackgroundController());
531  user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
532
533  // StatusAreaWidget uses Shell's CapsLockDelegate.
534  caps_lock_delegate_.reset(delegate_->CreateCapsLockDelegate());
535
536  session_state_delegate_.reset(delegate_->CreateSessionStateDelegate());
537
538  if (!command_line->HasSwitch(views::corewm::switches::kNoDropShadows)) {
539    resize_shadow_controller_.reset(new internal::ResizeShadowController());
540    shadow_controller_.reset(
541        new views::corewm::ShadowController(activation_client_));
542  }
543
544  // Create system_tray_notifier_ before the delegate.
545  system_tray_notifier_.reset(new ash::SystemTrayNotifier());
546
547  // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
548  system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
549  DCHECK(system_tray_delegate_.get());
550
551  internal::RootWindowController* root_window_controller =
552      new internal::RootWindowController(root_window);
553  InitRootWindowController(root_window_controller,
554                           delegate_->IsFirstRunAfterBoot());
555
556  locale_notification_controller_.reset(
557      new internal::LocaleNotificationController);
558
559  // Initialize system_tray_delegate_ after StatusAreaWidget is created.
560  system_tray_delegate_->Initialize();
561
562  display_controller_->InitSecondaryDisplays();
563
564  // Force Layout
565  root_window_controller->root_window_layout()->OnWindowResized();
566
567  // It needs to be created after OnWindowResized has been called, otherwise the
568  // widget will not paint when restoring after a browser crash.  Also it needs
569  // to be created after InitSecondaryDisplays() to initialize the wallpapers in
570  // the correct size.
571  user_wallpaper_delegate_->InitializeWallpaper();
572
573  if (initially_hide_cursor_)
574    cursor_manager_.HideCursor();
575  cursor_manager_.SetCursor(ui::kCursorPointer);
576
577  if (!cursor_manager_.IsCursorVisible()) {
578    // Cursor might have been hidden by something other than chrome.
579    // Let the first mouse event show the cursor.
580    env_filter_->set_cursor_hidden_by_filter(true);
581  }
582
583  // The compositor thread and main message loop have to be running in
584  // order to create mirror window. Run it after the main message loop
585  // is started.
586  base::MessageLoopForUI::current()->PostTask(
587      FROM_HERE,
588      base::Bind(&internal::DisplayManager::CreateMirrorWindowIfAny,
589                 base::Unretained(display_manager_.get())));
590}
591
592void Shell::ShowContextMenu(const gfx::Point& location_in_screen,
593                            ui::MenuSourceType source_type) {
594  // No context menus if there is no session with an active user.
595  if (!session_state_delegate_->NumberOfLoggedInUsers())
596    return;
597  // No context menus when screen is locked.
598  if (session_state_delegate_->IsScreenLocked())
599    return;
600
601  aura::RootWindow* root =
602      wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
603  // TODO(oshima): The root and root window controller shouldn't be
604  // NULL even for the out-of-bounds |location_in_screen| (It should
605  // return the primary root). Investigate why/how this is
606  // happening. crbug.com/165214.
607  internal::RootWindowController* rwc = internal::GetRootWindowController(root);
608  CHECK(rwc) << "root=" << root
609             << ", location:" << location_in_screen.ToString();
610  if (rwc)
611    rwc->ShowContextMenu(location_in_screen, source_type);
612}
613
614void Shell::ToggleAppList(aura::Window* window) {
615  // If the context window is not given, show it on the target root window.
616  if (!window)
617    window = GetTargetRootWindow();
618  if (!app_list_controller_)
619    app_list_controller_.reset(new internal::AppListController);
620  app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
621}
622
623bool Shell::GetAppListTargetVisibility() const {
624  return app_list_controller_.get() &&
625      app_list_controller_->GetTargetVisibility();
626}
627
628aura::Window* Shell::GetAppListWindow() {
629  return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
630}
631
632bool Shell::IsSystemModalWindowOpen() const {
633  if (simulate_modal_window_open_for_testing_)
634    return true;
635  const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
636      internal::kShellWindowId_SystemModalContainer, NULL);
637  for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
638       cit != containers.end(); ++cit) {
639    for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
640         wit != (*cit)->children().end(); ++wit) {
641      if ((*wit)->GetProperty(aura::client::kModalKey) ==
642          ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
643        return true;
644      }
645    }
646  }
647  return false;
648}
649
650views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
651    views::Widget* widget) {
652  // Use translucent-style window frames for dialogs.
653  CustomFrameViewAsh* frame_view = new CustomFrameViewAsh;
654  frame_view->Init(widget);
655  return frame_view;
656}
657
658void Shell::RotateFocus(Direction direction) {
659  focus_cycler_->RotateFocus(
660      direction == FORWARD ? internal::FocusCycler::FORWARD :
661                             internal::FocusCycler::BACKWARD);
662}
663
664void Shell::SetDisplayWorkAreaInsets(Window* contains,
665                                     const gfx::Insets& insets) {
666  if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
667          contains, insets)) {
668    return;
669  }
670  FOR_EACH_OBSERVER(ShellObserver, observers_,
671                    OnDisplayWorkAreaInsetsChanged());
672}
673
674void Shell::OnLoginStateChanged(user::LoginStatus status) {
675  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
676}
677
678void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
679  RootWindowControllerList controllers = GetAllRootWindowControllers();
680  for (RootWindowControllerList::iterator iter = controllers.begin();
681       iter != controllers.end(); ++iter)
682    (*iter)->UpdateAfterLoginStatusChange(status);
683}
684
685void Shell::OnAppTerminating() {
686  FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
687}
688
689void Shell::OnLockStateChanged(bool locked) {
690  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
691#ifndef NDEBUG
692  // Make sure that there is no system modal in Lock layer when unlocked.
693  if (!locked) {
694    std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
695        internal::kShellWindowId_LockSystemModalContainer,
696        GetPrimaryRootWindow());
697    for (std::vector<aura::Window*>::const_iterator iter = containers.begin();
698         iter != containers.end(); ++iter) {
699      DCHECK_EQ(0u, (*iter)->children().size());
700    }
701  }
702#endif
703}
704
705void Shell::CreateLauncher() {
706  RootWindowControllerList controllers = GetAllRootWindowControllers();
707  for (RootWindowControllerList::iterator iter = controllers.begin();
708       iter != controllers.end(); ++iter)
709    (*iter)->shelf()->CreateLauncher();
710}
711
712void Shell::ShowLauncher() {
713  RootWindowControllerList controllers = GetAllRootWindowControllers();
714  for (RootWindowControllerList::iterator iter = controllers.begin();
715       iter != controllers.end(); ++iter)
716    (*iter)->ShowLauncher();
717}
718
719void Shell::AddShellObserver(ShellObserver* observer) {
720  observers_.AddObserver(observer);
721}
722
723void Shell::RemoveShellObserver(ShellObserver* observer) {
724  observers_.RemoveObserver(observer);
725}
726
727void Shell::UpdateShelfVisibility() {
728  RootWindowControllerList controllers = GetAllRootWindowControllers();
729  for (RootWindowControllerList::iterator iter = controllers.begin();
730       iter != controllers.end(); ++iter)
731    if ((*iter)->shelf())
732      (*iter)->UpdateShelfVisibility();
733}
734
735void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
736                                     aura::RootWindow* root_window) {
737  ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
738      SetAutoHideBehavior(behavior);
739}
740
741ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
742    aura::RootWindow* root_window) const {
743  return ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
744      auto_hide_behavior();
745}
746
747void Shell::SetShelfAlignment(ShelfAlignment alignment,
748                              aura::RootWindow* root_window) {
749  if (ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
750      SetAlignment(alignment)) {
751    FOR_EACH_OBSERVER(
752        ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
753  }
754}
755
756ShelfAlignment Shell::GetShelfAlignment(aura::RootWindow* root_window) {
757  return internal::GetRootWindowController(root_window)->
758      GetShelfLayoutManager()->GetAlignment();
759}
760
761void Shell::SetDimming(bool should_dim) {
762  RootWindowControllerList controllers = GetAllRootWindowControllers();
763  for (RootWindowControllerList::iterator iter = controllers.begin();
764       iter != controllers.end(); ++iter)
765    (*iter)->screen_dimmer()->SetDimming(should_dim);
766}
767
768void Shell::CreateModalBackground(aura::Window* window) {
769  if (!modality_filter_) {
770    modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
771    AddPreTargetHandler(modality_filter_.get());
772  }
773  RootWindowControllerList controllers = GetAllRootWindowControllers();
774  for (RootWindowControllerList::iterator iter = controllers.begin();
775       iter != controllers.end(); ++iter)
776    (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
777}
778
779void Shell::OnModalWindowRemoved(aura::Window* removed) {
780  RootWindowControllerList controllers = GetAllRootWindowControllers();
781  bool activated = false;
782  for (RootWindowControllerList::iterator iter = controllers.begin();
783       iter != controllers.end() && !activated; ++iter) {
784    activated = (*iter)->GetSystemModalLayoutManager(removed)->
785        ActivateNextModalWindow();
786  }
787  if (!activated) {
788    RemovePreTargetHandler(modality_filter_.get());
789    modality_filter_.reset();
790    for (RootWindowControllerList::iterator iter = controllers.begin();
791         iter != controllers.end(); ++iter)
792      (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
793  }
794}
795
796WebNotificationTray* Shell::GetWebNotificationTray() {
797  return GetPrimaryRootWindowController()->shelf()->
798      status_area_widget()->web_notification_tray();
799}
800
801bool Shell::HasPrimaryStatusArea() {
802  ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
803  return shelf && shelf->status_area_widget();
804}
805
806SystemTray* Shell::GetPrimarySystemTray() {
807  return GetPrimaryRootWindowController()->GetSystemTray();
808}
809
810LauncherDelegate* Shell::GetLauncherDelegate() {
811  if (!launcher_delegate_) {
812    // Creates LauncherItemDelegateManager before LauncherDelegate.
813    launcher_item_delegate_manager_.reset(new LauncherItemDelegateManager);
814    launcher_model_.reset(new LauncherModel);
815    launcher_delegate_.reset(
816        delegate_->CreateLauncherDelegate(launcher_model_.get()));
817    app_list_shelf_item_delegate_.reset(
818        new internal::AppListShelfItemDelegate);
819  }
820  return launcher_delegate_.get();
821}
822
823void Shell::SetTouchHudProjectionEnabled(bool enabled) {
824  if (is_touch_hud_projection_enabled_ == enabled)
825    return;
826
827  is_touch_hud_projection_enabled_ = enabled;
828  FOR_EACH_OBSERVER(ShellObserver, observers_,
829                    OnTouchHudProjectionToggled(enabled));
830}
831
832void Shell::InitRootWindowForSecondaryDisplay(aura::RootWindow* root) {
833  internal::RootWindowController* controller =
834      new internal::RootWindowController(root);
835  // Pass false for the |is_first_run_after_boot| parameter so we'll show a
836  // black background on this display instead of trying to mimic the boot splash
837  // screen.
838  InitRootWindowController(controller, false);
839
840  controller->root_window_layout()->OnWindowResized();
841  desktop_background_controller_->OnRootWindowAdded(root);
842  high_contrast_controller_->OnRootWindowAdded(root);
843  root->ShowRootWindow();
844  // Activate new root for testing.
845  // TODO(oshima): remove this.
846  target_root_window_ = root;
847
848  // Create a launcher if a user is already logged.
849  if (Shell::GetInstance()->session_state_delegate()->NumberOfLoggedInUsers())
850    controller->shelf()->CreateLauncher();
851}
852
853void Shell::DoInitialWorkspaceAnimation() {
854  return GetPrimaryRootWindowController()->workspace_controller()->
855      DoInitialAnimation();
856}
857
858void Shell::InitRootWindowController(
859    internal::RootWindowController* controller,
860    bool first_run_after_boot) {
861
862  aura::RootWindow* root_window = controller->root_window();
863  DCHECK(activation_client_);
864  DCHECK(visibility_controller_.get());
865  DCHECK(drag_drop_controller_.get());
866  DCHECK(window_cycle_controller_.get());
867
868  aura::client::SetFocusClient(root_window, focus_client_.get());
869  input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
870  aura::client::SetActivationClient(root_window, activation_client_);
871  views::corewm::FocusController* focus_controller =
872      static_cast<views::corewm::FocusController*>(activation_client_);
873  root_window->AddPreTargetHandler(focus_controller);
874  aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
875  aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
876  aura::client::SetScreenPositionClient(root_window,
877                                        screen_position_controller_.get());
878  aura::client::SetCursorClient(root_window, &cursor_manager_);
879  aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
880  aura::client::SetEventClient(root_window, event_client_.get());
881
882  if (nested_dispatcher_controller_) {
883    aura::client::SetDispatcherClient(root_window,
884                                      nested_dispatcher_controller_.get());
885  }
886  if (user_action_client_)
887    aura::client::SetUserActionClient(root_window, user_action_client_.get());
888
889  controller->Init(first_run_after_boot);
890}
891
892////////////////////////////////////////////////////////////////////////////////
893// Shell, private:
894
895bool Shell::CanWindowReceiveEvents(aura::Window* window) {
896  RootWindowControllerList controllers = GetAllRootWindowControllers();
897  for (RootWindowControllerList::iterator iter = controllers.begin();
898       iter != controllers.end(); ++iter) {
899    internal::SystemModalContainerLayoutManager* layout_manager =
900        (*iter)->GetSystemModalLayoutManager(window);
901    if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
902      return true;
903  }
904  return false;
905}
906
907////////////////////////////////////////////////////////////////////////////////
908// Shell, ui::EventTarget overrides:
909
910bool Shell::CanAcceptEvent(const ui::Event& event) {
911  return true;
912}
913
914ui::EventTarget* Shell::GetParentTarget() {
915  return NULL;
916}
917
918void Shell::OnEvent(ui::Event* event) {
919}
920
921////////////////////////////////////////////////////////////////////////////////
922// Shell, aura::client::ActivationChangeObserver implementation:
923
924void Shell::OnWindowActivated(aura::Window* gained_active,
925                              aura::Window* lost_active) {
926  if (gained_active)
927    target_root_window_ = gained_active->GetRootWindow();
928}
929
930}  // namespace ash
931