ash/root_window_controller.cc

   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/root_window_controller.h"
   6
   7 #include <queue>
   8 #include <vector>
   9
  10 #include "ash/ash_constants.h"
  11 #include "ash/ash_switches.h"
  12 #include "ash/desktop_background/desktop_background_controller.h"
  13 #include "ash/desktop_background/desktop_background_widget_controller.h"
  14 #include "ash/desktop_background/user_wallpaper_delegate.h"
  15 #include "ash/display/display_manager.h"
  16 #include "ash/focus_cycler.h"
  17 #include "ash/high_contrast/high_contrast_controller.h"
  18 #include "ash/host/ash_window_tree_host.h"
  19 #include "ash/root_window_settings.h"
  20 #include "ash/session/session_state_delegate.h"
  21 #include "ash/shelf/shelf_layout_manager.h"
  22 #include "ash/shelf/shelf_types.h"
  23 #include "ash/shelf/shelf_widget.h"
  24 #include "ash/shell.h"
  25 #include "ash/shell_delegate.h"
  26 #include "ash/shell_factory.h"
  27 #include "ash/shell_window_ids.h"
  28 #include "ash/switchable_windows.h"
  29 #include "ash/system/status_area_widget.h"
  30 #include "ash/system/tray/system_tray_delegate.h"
  31 #include "ash/system/tray/system_tray_notifier.h"
  32 #include "ash/touch/touch_hud_debug.h"
  33 #include "ash/touch/touch_hud_projection.h"
  34 #include "ash/touch/touch_observer_hud.h"
  35 #include "ash/wm/always_on_top_controller.h"
  36 #include "ash/wm/dock/docked_window_layout_manager.h"
  37 #include "ash/wm/lock_layout_manager.h"
  38 #include "ash/wm/panels/attached_panel_window_targeter.h"
  39 #include "ash/wm/panels/panel_layout_manager.h"
  40 #include "ash/wm/panels/panel_window_event_handler.h"
  41 #include "ash/wm/root_window_layout_manager.h"
  42 #include "ash/wm/screen_dimmer.h"
  43 #include "ash/wm/stacking_controller.h"
  44 #include "ash/wm/status_area_layout_manager.h"
  45 #include "ash/wm/system_background_controller.h"
  46 #include "ash/wm/system_modal_container_layout_manager.h"
  47 #include "ash/wm/window_properties.h"
  48 #include "ash/wm/window_state.h"
  49 #include "ash/wm/window_util.h"
  50 #include "ash/wm/workspace/workspace_layout_manager.h"
  51 #include "ash/wm/workspace_controller.h"
  52 #include "base/command_line.h"
  53 #include "base/time/time.h"
  54 #include "ui/aura/client/aura_constants.h"
  55 #include "ui/aura/client/screen_position_client.h"
  56 #include "ui/aura/window.h"
  57 #include "ui/aura/window_delegate.h"
  58 #include "ui/aura/window_event_dispatcher.h"
  59 #include "ui/aura/window_observer.h"
  60 #include "ui/aura/window_tracker.h"
  61 #include "ui/base/hit_test.h"
  62 #include "ui/base/models/menu_model.h"
  63 #include "ui/gfx/display.h"
  64 #include "ui/gfx/screen.h"
  65 #include "ui/keyboard/keyboard_controller.h"
  66 #include "ui/keyboard/keyboard_util.h"
  67 #include "ui/views/controls/menu/menu_runner.h"
  68 #include "ui/views/view_model.h"
  69 #include "ui/views/view_model_utils.h"
  70 #include "ui/wm/core/capture_controller.h"
  71 #include "ui/wm/core/easy_resize_window_targeter.h"
  72 #include "ui/wm/core/visibility_controller.h"
  73 #include "ui/wm/core/window_util.h"
  74 #include "ui/wm/public/drag_drop_client.h"
  75 #include "ui/wm/public/tooltip_client.h"
  76 #include "ui/wm/public/window_types.h"
  77
  78 #if defined(OS_CHROMEOS)
  79 #include "ash/ash_touch_exploration_manager_chromeos.h"
  80 #include "ash/wm/boot_splash_screen_chromeos.h"
  81 #include "ui/chromeos/touch_exploration_controller.h"
  82 #endif
  83
  84 namespace ash {
  85 namespace {
  86
  87 #if defined(OS_CHROMEOS)
  88 // Duration for the animation that hides the boot splash screen, in
  89 // milliseconds.  This should be short enough in relation to
  90 // wm/window_animation.cc's brightness/grayscale fade animation that the login
  91 // background image animation isn't hidden by the splash screen animation.
  92 const int kBootSplashScreenHideDurationMs = 500;
  93 #endif
  94
  95 // Creates a new window for use as a container.
  96 aura::Window* CreateContainer(int window_id,
  97                               const char* name,
  98                               aura::Window* parent) {
  99   aura::Window* container = new aura::Window(NULL);
 100   container->set_id(window_id);
 101   container->SetName(name);
 102   container->Init(aura::WINDOW_LAYER_NOT_DRAWN);
 103   parent->AddChild(container);
 104   if (window_id != kShellWindowId_UnparentedControlContainer)
 105     container->Show();
 106   return container;
 107 }
 108
 109 float ToRelativeValue(int value, int src, int dst) {
 110   return static_cast<float>(value) / static_cast<float>(src) * dst;
 111 }
 112
 113 void MoveOriginRelativeToSize(const gfx::Size& src_size,
 114                                 const gfx::Size& dst_size,
 115                                 gfx::Rect* bounds_in_out) {
 116   gfx::Point origin = bounds_in_out->origin();
 117   bounds_in_out->set_origin(gfx::Point(
 118       ToRelativeValue(origin.x(), src_size.width(), dst_size.width()),
 119       ToRelativeValue(origin.y(), src_size.height(), dst_size.height())));
 120 }
 121
 122 // Reparents |window| to |new_parent|.
 123 void ReparentWindow(aura::Window* window, aura::Window* new_parent) {
 124   const gfx::Size src_size = window->parent()->bounds().size();
 125   const gfx::Size dst_size = new_parent->bounds().size();
 126   // Update the restore bounds to make it relative to the display.
 127   wm::WindowState* state = wm::GetWindowState(window);
 128   gfx::Rect restore_bounds;
 129   bool has_restore_bounds = state->HasRestoreBounds();
 130
 131   bool update_bounds = (state->IsNormalOrSnapped() || state->IsMinimized()) &&
 132                        new_parent->id() != kShellWindowId_DockedContainer;
 133   gfx::Rect local_bounds;
 134   if (update_bounds) {
 135     local_bounds = state->window()->bounds();
 136     MoveOriginRelativeToSize(src_size, dst_size, &local_bounds);
 137   }
 138
 139   if (has_restore_bounds) {
 140     restore_bounds = state->GetRestoreBoundsInParent();
 141     MoveOriginRelativeToSize(src_size, dst_size, &restore_bounds);
 142   }
 143
 144   new_parent->AddChild(window);
 145
 146   // Docked windows have bounds handled by the layout manager in AddChild().
 147   if (update_bounds)
 148     window->SetBounds(local_bounds);
 149
 150   if (has_restore_bounds)
 151     state->SetRestoreBoundsInParent(restore_bounds);
 152 }
 153
 154 // Reparents the appropriate set of windows from |src| to |dst|.
 155 void ReparentAllWindows(aura::Window* src, aura::Window* dst) {
 156   // Set of windows to move.
 157   const int kContainerIdsToMove[] = {
 158       kShellWindowId_DefaultContainer,
 159       kShellWindowId_DockedContainer,
 160       kShellWindowId_PanelContainer,
 161       kShellWindowId_AlwaysOnTopContainer,
 162       kShellWindowId_SystemModalContainer,
 163       kShellWindowId_LockSystemModalContainer,
 164       kShellWindowId_UnparentedControlContainer, };
 165   for (size_t i = 0; i < arraysize(kContainerIdsToMove); i++) {
 166     int id = kContainerIdsToMove[i];
 167     aura::Window* src_container = Shell::GetContainer(src, id);
 168     aura::Window* dst_container = Shell::GetContainer(dst, id);
 169     while (!src_container->children().empty()) {
 170       // Restart iteration from the source container windows each time as they
 171       // may change as a result of moving other windows.
 172       aura::Window::Windows::const_iterator iter =
 173           src_container->children().begin();
 174       while (iter != src_container->children().end() &&
 175              SystemModalContainerLayoutManager::IsModalBackground(*iter)) {
 176         ++iter;
 177       }
 178       // If the entire window list is modal background windows then stop.
 179       if (iter == src_container->children().end())
 180         break;
 181       ReparentWindow(*iter, dst_container);
 182     }
 183   }
 184 }
 185
 186 // Mark the container window so that a widget added to this container will
 187 // use the virtual screeen coordinates instead of parent.
 188 void SetUsesScreenCoordinates(aura::Window* container) {
 189   container->SetProperty(kUsesScreenCoordinatesKey, true);
 190 }
 191
 192 // Mark the container window so that a widget added to this container will
 193 // say in the same root window regardless of the bounds specified.
 194 void DescendantShouldStayInSameRootWindow(aura::Window* container) {
 195   container->SetProperty(kStayInSameRootWindowKey, true);
 196 }
 197
 198 void SetUsesEasyResizeTargeter(aura::Window* container) {
 199   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 200                            -kResizeOutsideBoundsSize,
 201                            -kResizeOutsideBoundsSize,
 202                            -kResizeOutsideBoundsSize);
 203   gfx::Insets touch_extend = mouse_extend.Scale(
 204       kResizeOutsideBoundsScaleForTouch);
 205   container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 206       new ::wm::EasyResizeWindowTargeter(container, mouse_extend,
 207                                          touch_extend)));
 208 }
 209
 210 // A window delegate which does nothing. Used to create a window that
 211 // is a event target, but do nothing.
 212 class EmptyWindowDelegate : public aura::WindowDelegate {
 213  public:
 214   EmptyWindowDelegate() {}
 215   virtual ~EmptyWindowDelegate() {}
 216
 217   // aura::WindowDelegate overrides:
 218   virtual gfx::Size GetMinimumSize() const OVERRIDE {
 219     return gfx::Size();
 220   }
 221   virtual gfx::Size GetMaximumSize() const OVERRIDE {
 222     return gfx::Size();
 223   }
 224   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
 225                                const gfx::Rect& new_bounds) OVERRIDE {
 226   }
 227   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE {
 228     return gfx::kNullCursor;
 229   }
 230   virtual int GetNonClientComponent(
 231       const gfx::Point& point) const OVERRIDE {
 232     return HTNOWHERE;
 233   }
 234   virtual bool ShouldDescendIntoChildForEventHandling(
 235       aura::Window* child,
 236       const gfx::Point& location) OVERRIDE {
 237     return false;
 238   }
 239   virtual bool CanFocus() OVERRIDE {
 240     return false;
 241   }
 242   virtual void OnCaptureLost() OVERRIDE {
 243   }
 244   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
 245   }
 246   virtual void OnDeviceScaleFactorChanged(
 247       float device_scale_factor) OVERRIDE {
 248   }
 249   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE {}
 250   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE {
 251     delete this;
 252   }
 253   virtual void OnWindowTargetVisibilityChanged(bool visible) OVERRIDE {
 254   }
 255   virtual bool HasHitTestMask() const OVERRIDE {
 256     return false;
 257   }
 258   virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE {}
 259
 260  private:
 261   DISALLOW_COPY_AND_ASSIGN(EmptyWindowDelegate);
 262 };
 263
 264 }  // namespace
 265
 266 void RootWindowController::CreateForPrimaryDisplay(AshWindowTreeHost* host) {
 267   RootWindowController* controller = new RootWindowController(host);
 268   controller->Init(RootWindowController::PRIMARY,
 269                    Shell::GetInstance()->delegate()->IsFirstRunAfterBoot());
 270 }
 271
 272 void RootWindowController::CreateForSecondaryDisplay(AshWindowTreeHost* host) {
 273   RootWindowController* controller = new RootWindowController(host);
 274   controller->Init(RootWindowController::SECONDARY, false /* first run */);
 275 }
 276
 277 void RootWindowController::CreateForVirtualKeyboardDisplay(
 278     AshWindowTreeHost* host) {
 279   RootWindowController* controller = new RootWindowController(host);
 280   controller->Init(RootWindowController::VIRTUAL_KEYBOARD,
 281                    false /* first run */);
 282 }
 283
 284 // static
 285 RootWindowController* RootWindowController::ForShelf(
 286     const aura::Window* window) {
 287   CHECK(Shell::HasInstance());
 288   return GetRootWindowController(window->GetRootWindow());
 289 }
 290
 291 // static
 292 RootWindowController* RootWindowController::ForWindow(
 293     const aura::Window* window) {
 294   CHECK(Shell::HasInstance());
 295   return GetRootWindowController(window->GetRootWindow());
 296 }
 297
 298 // static
 299 RootWindowController* RootWindowController::ForTargetRootWindow() {
 300   CHECK(Shell::HasInstance());
 301   return GetRootWindowController(Shell::GetTargetRootWindow());
 302 }
 303
 304 // static
 305 aura::Window* RootWindowController::GetContainerForWindow(
 306     aura::Window* window) {
 307   aura::Window* container = window->parent();
 308   while (container && container->type() != ui::wm::WINDOW_TYPE_UNKNOWN)
 309     container = container->parent();
 310   return container;
 311 }
 312
 313 RootWindowController::~RootWindowController() {
 314   Shutdown();
 315   ash_host_.reset();
 316   // The CaptureClient needs to be around for as long as the RootWindow is
 317   // valid.
 318   capture_client_.reset();
 319 }
 320
 321 aura::WindowTreeHost* RootWindowController::GetHost() {
 322   return ash_host_->AsWindowTreeHost();
 323 }
 324
 325 const aura::WindowTreeHost* RootWindowController::GetHost() const {
 326   return ash_host_->AsWindowTreeHost();
 327 }
 328
 329 aura::Window* RootWindowController::GetRootWindow() {
 330   return GetHost()->window();
 331 }
 332
 333 const aura::Window* RootWindowController::GetRootWindow() const {
 334   return GetHost()->window();
 335 }
 336
 337 void RootWindowController::SetWallpaperController(
 338     DesktopBackgroundWidgetController* controller) {
 339   wallpaper_controller_.reset(controller);
 340 }
 341
 342 void RootWindowController::SetAnimatingWallpaperController(
 343     AnimatingDesktopController* controller) {
 344   if (animating_wallpaper_controller_.get())
 345     animating_wallpaper_controller_->StopAnimating();
 346   animating_wallpaper_controller_.reset(controller);
 347 }
 348
 349 void RootWindowController::Shutdown() {
 350   Shell* shell = Shell::GetInstance();
 351   shell->RemoveShellObserver(this);
 352
 353 #if defined(OS_CHROMEOS)
 354   if (touch_exploration_manager_) {
 355     touch_exploration_manager_.reset();
 356   }
 357 #endif
 358
 359   if (animating_wallpaper_controller_.get())
 360     animating_wallpaper_controller_->StopAnimating();
 361   wallpaper_controller_.reset();
 362   animating_wallpaper_controller_.reset();
 363   aura::Window* root_window = GetRootWindow();
 364   // Change the target root window before closing child windows. If any child
 365   // being removed triggers a relayout of the shelf it will try to build a
 366   // window list adding windows from the target root window's containers which
 367   // may have already gone away.
 368   if (Shell::GetTargetRootWindow() == root_window) {
 369     shell->set_target_root_window(
 370         Shell::GetPrimaryRootWindow() == root_window
 371             ? NULL
 372             : Shell::GetPrimaryRootWindow());
 373   }
 374
 375   CloseChildWindows();
 376   GetRootWindowSettings(root_window)->controller = NULL;
 377   screen_dimmer_.reset();
 378   workspace_controller_.reset();
 379   // Forget with the display ID so that display lookup
 380   // ends up with invalid display.
 381   GetRootWindowSettings(root_window)->display_id =
 382       gfx::Display::kInvalidDisplayID;
 383   ash_host_->PrepareForShutdown();
 384
 385   system_background_.reset();
 386   aura::client::SetScreenPositionClient(root_window, NULL);
 387 }
 388
 389 SystemModalContainerLayoutManager*
 390 RootWindowController::GetSystemModalLayoutManager(aura::Window* window) {
 391   aura::Window* modal_container = NULL;
 392   if (window) {
 393     aura::Window* window_container = GetContainerForWindow(window);
 394     if (window_container &&
 395         window_container->id() >= kShellWindowId_LockScreenContainer) {
 396       modal_container = GetContainer(kShellWindowId_LockSystemModalContainer);
 397     } else {
 398       modal_container = GetContainer(kShellWindowId_SystemModalContainer);
 399     }
 400   } else {
 401     int modal_window_id = Shell::GetInstance()->session_state_delegate()
 402         ->IsUserSessionBlocked() ? kShellWindowId_LockSystemModalContainer :
 403                                    kShellWindowId_SystemModalContainer;
 404     modal_container = GetContainer(modal_window_id);
 405   }
 406   return modal_container ? static_cast<SystemModalContainerLayoutManager*>(
 407       modal_container->layout_manager()) : NULL;
 408 }
 409
 410 aura::Window* RootWindowController::GetContainer(int container_id) {
 411   return GetRootWindow()->GetChildById(container_id);
 412 }
 413
 414 const aura::Window* RootWindowController::GetContainer(int container_id) const {
 415   return ash_host_->AsWindowTreeHost()->window()->GetChildById(container_id);
 416 }
 417
 418 void RootWindowController::ShowShelf() {
 419   if (!shelf_->shelf())
 420     return;
 421   shelf_->shelf()->SetVisible(true);
 422   shelf_->status_area_widget()->Show();
 423 }
 424
 425 void RootWindowController::OnShelfCreated() {
 426   if (panel_layout_manager_)
 427     panel_layout_manager_->SetShelf(shelf_->shelf());
 428   if (docked_layout_manager_) {
 429     docked_layout_manager_->SetShelf(shelf_->shelf());
 430     if (shelf_->shelf_layout_manager())
 431       docked_layout_manager_->AddObserver(shelf_->shelf_layout_manager());
 432   }
 433
 434   // Notify shell observers that the shelf has been created.
 435   Shell::GetInstance()->OnShelfCreatedForRootWindow(GetRootWindow());
 436 }
 437
 438 void RootWindowController::UpdateAfterLoginStatusChange(
 439     user::LoginStatus status) {
 440   if (status != user::LOGGED_IN_NONE)
 441     mouse_event_target_.reset();
 442   if (shelf_->status_area_widget())
 443     shelf_->status_area_widget()->UpdateAfterLoginStatusChange(status);
 444 }
 445
 446 void RootWindowController::HandleInitialDesktopBackgroundAnimationStarted() {
 447 #if defined(OS_CHROMEOS)
 448   if (CommandLine::ForCurrentProcess()->HasSwitch(
 449           switches::kAshAnimateFromBootSplashScreen) &&
 450       boot_splash_screen_.get()) {
 451     // Make the splash screen fade out so it doesn't obscure the desktop
 452     // wallpaper's brightness/grayscale animation.
 453     boot_splash_screen_->StartHideAnimation(
 454         base::TimeDelta::FromMilliseconds(kBootSplashScreenHideDurationMs));
 455   }
 456 #endif
 457 }
 458
 459 void RootWindowController::OnWallpaperAnimationFinished(views::Widget* widget) {
 460   // Make sure the wallpaper is visible.
 461   system_background_->SetColor(SK_ColorBLACK);
 462 #if defined(OS_CHROMEOS)
 463   boot_splash_screen_.reset();
 464 #endif
 465
 466   Shell::GetInstance()->user_wallpaper_delegate()->
 467       OnWallpaperAnimationFinished();
 468   // Only removes old component when wallpaper animation finished. If we
 469   // remove the old one before the new wallpaper is done fading in there will
 470   // be a white flash during the animation.
 471   if (animating_wallpaper_controller()) {
 472     DesktopBackgroundWidgetController* controller =
 473         animating_wallpaper_controller()->GetController(true);
 474     // |desktop_widget_| should be the same animating widget we try to move
 475     // to |kDesktopController|. Otherwise, we may close |desktop_widget_|
 476     // before move it to |kDesktopController|.
 477     DCHECK_EQ(controller->widget(), widget);
 478     // Release the old controller and close its background widget.
 479     SetWallpaperController(controller);
 480   }
 481 }
 482
 483 void RootWindowController::CloseChildWindows() {
 484   mouse_event_target_.reset();
 485
 486   // Remove observer as deactivating keyboard causes |docked_layout_manager_|
 487   // to fire notifications.
 488   if (docked_layout_manager_ && shelf_ && shelf_->shelf_layout_manager())
 489     docked_layout_manager_->RemoveObserver(shelf_->shelf_layout_manager());
 490
 491   // Deactivate keyboard container before closing child windows and shutting
 492   // down associated layout managers.
 493   DeactivateKeyboard(keyboard::KeyboardController::GetInstance());
 494
 495   // panel_layout_manager_ needs to be shut down before windows are destroyed.
 496   if (panel_layout_manager_) {
 497     panel_layout_manager_->Shutdown();
 498     panel_layout_manager_ = NULL;
 499   }
 500   // docked_layout_manager_ needs to be shut down before windows are destroyed.
 501   if (docked_layout_manager_) {
 502     docked_layout_manager_->Shutdown();
 503     docked_layout_manager_ = NULL;
 504   }
 505   aura::Window* root_window = GetRootWindow();
 506   aura::client::SetDragDropClient(root_window, NULL);
 507
 508   // TODO(harrym): Remove when Status Area Widget is a child view.
 509   if (shelf_) {
 510     shelf_->ShutdownStatusAreaWidget();
 511
 512     if (shelf_->shelf_layout_manager())
 513       shelf_->shelf_layout_manager()->PrepareForShutdown();
 514   }
 515
 516   // Close background widget first as it depends on tooltip.
 517   wallpaper_controller_.reset();
 518   animating_wallpaper_controller_.reset();
 519
 520   workspace_controller_.reset();
 521   aura::client::SetTooltipClient(root_window, NULL);
 522
 523   // Explicitly destroy top level windows. We do this as during part of
 524   // destruction such windows may query the RootWindow for state.
 525   std::queue<aura::Window*> non_toplevel_windows;
 526   non_toplevel_windows.push(root_window);
 527   while (!non_toplevel_windows.empty()) {
 528     aura::Window* non_toplevel_window = non_toplevel_windows.front();
 529     non_toplevel_windows.pop();
 530     aura::WindowTracker toplevel_windows;
 531     for (size_t i = 0; i < non_toplevel_window->children().size(); ++i) {
 532       aura::Window* child = non_toplevel_window->children()[i];
 533       if (!child->owned_by_parent())
 534         continue;
 535       if (child->delegate())
 536         toplevel_windows.Add(child);
 537       else
 538         non_toplevel_windows.push(child);
 539     }
 540     while (!toplevel_windows.windows().empty())
 541       delete *toplevel_windows.windows().begin();
 542   }
 543   // And then remove the containers.
 544   while (!root_window->children().empty()) {
 545     aura::Window* window = root_window->children()[0];
 546     if (window->owned_by_parent()) {
 547       delete window;
 548     } else {
 549       root_window->RemoveChild(window);
 550     }
 551   }
 552
 553   shelf_.reset();
 554 }
 555
 556 void RootWindowController::MoveWindowsTo(aura::Window* dst) {
 557   // Forget the shelf early so that shelf don't update itself using wrong
 558   // display info.
 559   workspace_controller_->SetShelf(NULL);
 560   ReparentAllWindows(GetRootWindow(), dst);
 561 }
 562
 563 ShelfLayoutManager* RootWindowController::GetShelfLayoutManager() {
 564   return shelf_->shelf_layout_manager();
 565 }
 566
 567 SystemTray* RootWindowController::GetSystemTray() {
 568   // We assume in throughout the code that this will not return NULL. If code
 569   // triggers this for valid reasons, it should test status_area_widget first.
 570   CHECK(shelf_->status_area_widget());
 571   return shelf_->status_area_widget()->system_tray();
 572 }
 573
 574 void RootWindowController::ShowContextMenu(const gfx::Point& location_in_screen,
 575                                            ui::MenuSourceType source_type) {
 576   DCHECK(Shell::GetInstance()->delegate());
 577   scoped_ptr<ui::MenuModel> menu_model(
 578       Shell::GetInstance()->delegate()->CreateContextMenu(
 579           GetRootWindow(), NULL, NULL));
 580   if (!menu_model)
 581     return;
 582
 583   // Background controller may not be set yet if user clicked on status are
 584   // before initial animation completion. See crbug.com/222218
 585   if (!wallpaper_controller_.get())
 586     return;
 587
 588   views::MenuRunner menu_runner(menu_model.get(),
 589                                 views::MenuRunner::CONTEXT_MENU);
 590   if (menu_runner.RunMenuAt(wallpaper_controller_->widget(),
 591                             NULL,
 592                             gfx::Rect(location_in_screen, gfx::Size()),
 593                             views::MENU_ANCHOR_TOPLEFT,
 594                             source_type) == views::MenuRunner::MENU_DELETED) {
 595     return;
 596   }
 597
 598   Shell::GetInstance()->UpdateShelfVisibility();
 599 }
 600
 601 void RootWindowController::UpdateShelfVisibility() {
 602   shelf_->shelf_layout_manager()->UpdateVisibilityState();
 603 }
 604
 605 const aura::Window* RootWindowController::GetWindowForFullscreenMode() const {
 606   const aura::Window* topmost_window = NULL;
 607   const aura::Window* active_window = wm::GetActiveWindow();
 608   if (active_window && active_window->GetRootWindow() == GetRootWindow() &&
 609       IsSwitchableContainer(active_window->parent())) {
 610     // Use the active window when it is on the current root window to determine
 611     // the fullscreen state to allow temporarily using a panel or docked window
 612     // (which are always above the default container) while a fullscreen
 613     // window is open. We only use the active window when in a switchable
 614     // container as the launcher should not exit fullscreen mode.
 615     topmost_window = active_window;
 616   } else {
 617     // Otherwise, use the topmost window on the root window's default container
 618     // when there is no active window on this root window.
 619     const aura::Window::Windows& windows =
 620         GetContainer(kShellWindowId_DefaultContainer)->children();
 621     for (aura::Window::Windows::const_reverse_iterator iter = windows.rbegin();
 622          iter != windows.rend(); ++iter) {
 623       if (((*iter)->type() == ui::wm::WINDOW_TYPE_NORMAL ||
 624            (*iter)->type() == ui::wm::WINDOW_TYPE_PANEL) &&
 625           (*iter)->layer()->GetTargetVisibility()) {
 626         topmost_window = *iter;
 627         break;
 628       }
 629     }
 630   }
 631   while (topmost_window) {
 632     if (wm::GetWindowState(topmost_window)->IsFullscreen())
 633       return topmost_window;
 634     topmost_window = ::wm::GetTransientParent(topmost_window);
 635   }
 636   return NULL;
 637 }
 638
 639 void RootWindowController::ActivateKeyboard(
 640     keyboard::KeyboardController* keyboard_controller) {
 641   if (!keyboard::IsKeyboardEnabled() ||
 642       GetContainer(kShellWindowId_VirtualKeyboardContainer)) {
 643     return;
 644   }
 645   DCHECK(keyboard_controller);
 646   if (!keyboard::IsKeyboardUsabilityExperimentEnabled()) {
 647     keyboard_controller->AddObserver(shelf()->shelf_layout_manager());
 648     keyboard_controller->AddObserver(panel_layout_manager_);
 649     keyboard_controller->AddObserver(docked_layout_manager_);
 650     keyboard_controller->AddObserver(workspace_controller_->layout_manager());
 651     Shell::GetInstance()->delegate()->VirtualKeyboardActivated(true);
 652   }
 653   aura::Window* parent = GetContainer(
 654       kShellWindowId_VirtualKeyboardParentContainer);
 655   DCHECK(parent);
 656   aura::Window* keyboard_container =
 657       keyboard_controller->GetContainerWindow();
 658   keyboard_container->set_id(kShellWindowId_VirtualKeyboardContainer);
 659   parent->AddChild(keyboard_container);
 660   // TODO(oshima): Bounds of keyboard container should be handled by
 661   // RootWindowLayoutManager. Remove this after fixed RootWindowLayoutManager.
 662   keyboard_container->SetBounds(parent->bounds());
 663 }
 664
 665 void RootWindowController::DeactivateKeyboard(
 666     keyboard::KeyboardController* keyboard_controller) {
 667   if (!keyboard_controller ||
 668       !keyboard_controller->keyboard_container_initialized()) {
 669     return;
 670   }
 671   aura::Window* keyboard_container =
 672       keyboard_controller->GetContainerWindow();
 673   if (keyboard_container->GetRootWindow() == GetRootWindow()) {
 674     aura::Window* parent = GetContainer(
 675         kShellWindowId_VirtualKeyboardParentContainer);
 676     DCHECK(parent);
 677     parent->RemoveChild(keyboard_container);
 678     if (!keyboard::IsKeyboardUsabilityExperimentEnabled()) {
 679       // Virtual keyboard may be deactivated while still showing, notify all
 680       // observers that keyboard bounds changed to 0 before remove them.
 681       keyboard_controller->NotifyKeyboardBoundsChanging(gfx::Rect());
 682       keyboard_controller->RemoveObserver(shelf()->shelf_layout_manager());
 683       keyboard_controller->RemoveObserver(panel_layout_manager_);
 684       keyboard_controller->RemoveObserver(docked_layout_manager_);
 685       keyboard_controller->RemoveObserver(
 686           workspace_controller_->layout_manager());
 687       Shell::GetInstance()->delegate()->VirtualKeyboardActivated(false);
 688     }
 689   }
 690 }
 691
 692 bool RootWindowController::IsVirtualKeyboardWindow(aura::Window* window) {
 693   aura::Window* parent = GetContainer(
 694       kShellWindowId_VirtualKeyboardParentContainer);
 695   return parent ? parent->Contains(window) : false;
 696 }
 697
 698 ////////////////////////////////////////////////////////////////////////////////
 699 // RootWindowController, private:
 700
 701 RootWindowController::RootWindowController(AshWindowTreeHost* ash_host)
 702     : ash_host_(ash_host),
 703       root_window_layout_(NULL),
 704       docked_layout_manager_(NULL),
 705       panel_layout_manager_(NULL),
 706       touch_hud_debug_(NULL),
 707       touch_hud_projection_(NULL) {
 708   aura::Window* root_window = GetRootWindow();
 709   GetRootWindowSettings(root_window)->controller = this;
 710   screen_dimmer_.reset(new ScreenDimmer(root_window));
 711
 712   stacking_controller_.reset(new StackingController);
 713   aura::client::SetWindowTreeClient(root_window, stacking_controller_.get());
 714   capture_client_.reset(new ::wm::ScopedCaptureClient(root_window));
 715 }
 716
 717 void RootWindowController::Init(RootWindowType root_window_type,
 718                                 bool first_run_after_boot) {
 719   aura::Window* root_window = GetRootWindow();
 720   Shell* shell = Shell::GetInstance();
 721   shell->InitRootWindow(root_window);
 722
 723   ash_host_->AsWindowTreeHost()->SetCursor(ui::kCursorPointer);
 724   CreateContainersInRootWindow(root_window);
 725
 726   if (root_window_type == VIRTUAL_KEYBOARD) {
 727     aura::Window* virtual_keyboard_parent_container = GetContainer(
 728         kShellWindowId_VirtualKeyboardParentContainer);
 729     virtual_keyboard_parent_container->SetBounds(root_window->bounds());
 730     shell->InitKeyboard();
 731     return;
 732   }
 733
 734   CreateSystemBackground(first_run_after_boot);
 735
 736   InitLayoutManagers();
 737   InitTouchHuds();
 738
 739   if (Shell::GetPrimaryRootWindowController()->
 740       GetSystemModalLayoutManager(NULL)->has_modal_background()) {
 741     GetSystemModalLayoutManager(NULL)->CreateModalBackground();
 742   }
 743
 744   shell->AddShellObserver(this);
 745
 746   if (root_window_type == PRIMARY) {
 747     root_window_layout()->OnWindowResized();
 748     if (!keyboard::IsKeyboardUsabilityExperimentEnabled())
 749       shell->InitKeyboard();
 750   } else {
 751     root_window_layout()->OnWindowResized();
 752     ash_host_->AsWindowTreeHost()->Show();
 753
 754     // Create a shelf if a user is already logged in.
 755     if (shell->session_state_delegate()->NumberOfLoggedInUsers())
 756       shelf()->CreateShelf();
 757
 758     // Notify shell observers about new root window.
 759     shell->OnRootWindowAdded(root_window);
 760   }
 761
 762 #if defined(OS_CHROMEOS)
 763   if (!CommandLine::ForCurrentProcess()->HasSwitch(
 764           switches::kAshDisableTouchExplorationMode)) {
 765     touch_exploration_manager_.reset(new AshTouchExplorationManager(this));
 766   }
 767 #endif
 768 }
 769
 770 void RootWindowController::InitLayoutManagers() {
 771   aura::Window* root_window = GetRootWindow();
 772   root_window_layout_ = new RootWindowLayoutManager(root_window);
 773   root_window->SetLayoutManager(root_window_layout_);
 774
 775   aura::Window* default_container =
 776       GetContainer(kShellWindowId_DefaultContainer);
 777   // Workspace manager has its own layout managers.
 778   workspace_controller_.reset(
 779       new WorkspaceController(default_container));
 780
 781   aura::Window* always_on_top_container =
 782       GetContainer(kShellWindowId_AlwaysOnTopContainer);
 783   always_on_top_container->SetLayoutManager(
 784       new WorkspaceLayoutManager(always_on_top_container));
 785   always_on_top_controller_.reset(new AlwaysOnTopController);
 786   always_on_top_controller_->SetAlwaysOnTopContainer(always_on_top_container);
 787
 788   DCHECK(!shelf_.get());
 789   aura::Window* shelf_container = GetContainer(kShellWindowId_ShelfContainer);
 790   // TODO(harrym): Remove when status area is view.
 791   aura::Window* status_container = GetContainer(kShellWindowId_StatusContainer);
 792   shelf_.reset(new ShelfWidget(
 793       shelf_container, status_container, workspace_controller()));
 794
 795   if (!Shell::GetInstance()->session_state_delegate()->
 796       IsActiveUserSessionStarted()) {
 797     // This window exists only to be a event target on login screen.
 798     // It does not have to handle events, nor be visible.
 799     mouse_event_target_.reset(new aura::Window(new EmptyWindowDelegate));
 800     mouse_event_target_->Init(aura::WINDOW_LAYER_NOT_DRAWN);
 801
 802     aura::Window* lock_background_container =
 803         GetContainer(kShellWindowId_LockScreenBackgroundContainer);
 804     lock_background_container->AddChild(mouse_event_target_.get());
 805     mouse_event_target_->Show();
 806   }
 807
 808   // Create Docked windows layout manager
 809   aura::Window* docked_container = GetContainer(kShellWindowId_DockedContainer);
 810   docked_layout_manager_ =
 811       new DockedWindowLayoutManager(docked_container, workspace_controller());
 812   docked_container->SetLayoutManager(docked_layout_manager_);
 813
 814   // Installs SnapLayoutManager to containers who set the
 815   // |kSnapsChildrenToPhysicalPixelBoundary| property.
 816   wm::InstallSnapLayoutManagerToContainers(root_window);
 817
 818   // Create Panel layout manager
 819   aura::Window* panel_container = GetContainer(kShellWindowId_PanelContainer);
 820   panel_layout_manager_ = new PanelLayoutManager(panel_container);
 821   panel_container->SetLayoutManager(panel_layout_manager_);
 822   panel_container_handler_.reset(new PanelWindowEventHandler);
 823   panel_container->AddPreTargetHandler(panel_container_handler_.get());
 824
 825   // Install an AttachedPanelWindowTargeter on the panel container to make it
 826   // easier to correctly target shelf buttons with touch.
 827   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 828                            -kResizeOutsideBoundsSize,
 829                            -kResizeOutsideBoundsSize,
 830                            -kResizeOutsideBoundsSize);
 831   gfx::Insets touch_extend = mouse_extend.Scale(
 832       kResizeOutsideBoundsScaleForTouch);
 833   panel_container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 834       new AttachedPanelWindowTargeter(panel_container,
 835                                       mouse_extend,
 836                                       touch_extend,
 837                                       panel_layout_manager_)));
 838 }
 839
 840 void RootWindowController::InitTouchHuds() {
 841   CommandLine* command_line = CommandLine::ForCurrentProcess();
 842   if (command_line->HasSwitch(switches::kAshTouchHud))
 843     set_touch_hud_debug(new TouchHudDebug(GetRootWindow()));
 844   if (Shell::GetInstance()->is_touch_hud_projection_enabled())
 845     EnableTouchHudProjection();
 846 }
 847
 848 void RootWindowController::CreateSystemBackground(
 849     bool is_first_run_after_boot) {
 850   SkColor color = SK_ColorBLACK;
 851 #if defined(OS_CHROMEOS)
 852   if (is_first_run_after_boot)
 853     color = kChromeOsBootColor;
 854 #endif
 855   system_background_.reset(
 856       new SystemBackgroundController(GetRootWindow(), color));
 857
 858 #if defined(OS_CHROMEOS)
 859   // Make a copy of the system's boot splash screen so we can composite it
 860   // onscreen until the desktop background is ready.
 861   if (is_first_run_after_boot &&
 862       (CommandLine::ForCurrentProcess()->HasSwitch(
 863            switches::kAshCopyHostBackgroundAtBoot) ||
 864        CommandLine::ForCurrentProcess()->HasSwitch(
 865            switches::kAshAnimateFromBootSplashScreen)))
 866     boot_splash_screen_.reset(new BootSplashScreen(GetHost()));
 867 #endif
 868 }
 869
 870 void RootWindowController::CreateContainersInRootWindow(
 871     aura::Window* root_window) {
 872   // These containers are just used by PowerButtonController to animate groups
 873   // of containers simultaneously without messing up the current transformations
 874   // on those containers. These are direct children of the root window; all of
 875   // the other containers are their children.
 876
 877   // The desktop background container is not part of the lock animation, so it
 878   // is not included in those animate groups.
 879   // When screen is locked desktop background is moved to lock screen background
 880   // container (moved back on unlock). We want to make sure that there's an
 881   // opaque layer occluding the non-lock-screen layers.
 882   aura::Window* desktop_background_container = CreateContainer(
 883       kShellWindowId_DesktopBackgroundContainer,
 884       "DesktopBackgroundContainer",
 885       root_window);
 886   ::wm::SetChildWindowVisibilityChangesAnimated(desktop_background_container);
 887
 888   aura::Window* non_lock_screen_containers = CreateContainer(
 889       kShellWindowId_NonLockScreenContainersContainer,
 890       "NonLockScreenContainersContainer",
 891       root_window);
 892
 893   aura::Window* lock_background_containers = CreateContainer(
 894       kShellWindowId_LockScreenBackgroundContainer,
 895       "LockScreenBackgroundContainer",
 896       root_window);
 897   ::wm::SetChildWindowVisibilityChangesAnimated(lock_background_containers);
 898
 899   aura::Window* lock_screen_containers = CreateContainer(
 900       kShellWindowId_LockScreenContainersContainer,
 901       "LockScreenContainersContainer",
 902       root_window);
 903   aura::Window* lock_screen_related_containers = CreateContainer(
 904       kShellWindowId_LockScreenRelatedContainersContainer,
 905       "LockScreenRelatedContainersContainer",
 906       root_window);
 907
 908   CreateContainer(kShellWindowId_UnparentedControlContainer,
 909                   "UnparentedControlContainer",
 910                   non_lock_screen_containers);
 911
 912   aura::Window* default_container = CreateContainer(
 913       kShellWindowId_DefaultContainer,
 914       "DefaultContainer",
 915       non_lock_screen_containers);
 916   ::wm::SetChildWindowVisibilityChangesAnimated(default_container);
 917   wm::SetSnapsChildrenToPhysicalPixelBoundary(default_container);
 918   SetUsesScreenCoordinates(default_container);
 919   SetUsesEasyResizeTargeter(default_container);
 920
 921   aura::Window* always_on_top_container = CreateContainer(
 922       kShellWindowId_AlwaysOnTopContainer,
 923       "AlwaysOnTopContainer",
 924       non_lock_screen_containers);
 925   ::wm::SetChildWindowVisibilityChangesAnimated(always_on_top_container);
 926   wm::SetSnapsChildrenToPhysicalPixelBoundary(always_on_top_container);
 927   SetUsesScreenCoordinates(always_on_top_container);
 928
 929   aura::Window* docked_container = CreateContainer(
 930       kShellWindowId_DockedContainer,
 931       "DockedContainer",
 932       non_lock_screen_containers);
 933   ::wm::SetChildWindowVisibilityChangesAnimated(docked_container);
 934   wm::SetSnapsChildrenToPhysicalPixelBoundary(docked_container);
 935   SetUsesScreenCoordinates(docked_container);
 936   SetUsesEasyResizeTargeter(docked_container);
 937
 938   aura::Window* shelf_container =
 939       CreateContainer(kShellWindowId_ShelfContainer,
 940                       "ShelfContainer",
 941                       non_lock_screen_containers);
 942   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_container);
 943   SetUsesScreenCoordinates(shelf_container);
 944   DescendantShouldStayInSameRootWindow(shelf_container);
 945
 946   aura::Window* panel_container = CreateContainer(
 947       kShellWindowId_PanelContainer,
 948       "PanelContainer",
 949       non_lock_screen_containers);
 950   wm::SetSnapsChildrenToPhysicalPixelBoundary(panel_container);
 951   SetUsesScreenCoordinates(panel_container);
 952
 953   aura::Window* shelf_bubble_container =
 954       CreateContainer(kShellWindowId_ShelfBubbleContainer,
 955                       "ShelfBubbleContainer",
 956                       non_lock_screen_containers);
 957   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_bubble_container);
 958   SetUsesScreenCoordinates(shelf_bubble_container);
 959   DescendantShouldStayInSameRootWindow(shelf_bubble_container);
 960
 961   aura::Window* app_list_container =
 962       CreateContainer(kShellWindowId_AppListContainer,
 963                       "AppListContainer",
 964                       non_lock_screen_containers);
 965   wm::SetSnapsChildrenToPhysicalPixelBoundary(app_list_container);
 966   SetUsesScreenCoordinates(app_list_container);
 967
 968   aura::Window* modal_container = CreateContainer(
 969       kShellWindowId_SystemModalContainer,
 970       "SystemModalContainer",
 971       non_lock_screen_containers);
 972   wm::SetSnapsChildrenToPhysicalPixelBoundary(modal_container);
 973   modal_container->SetLayoutManager(
 974       new SystemModalContainerLayoutManager(modal_container));
 975   ::wm::SetChildWindowVisibilityChangesAnimated(modal_container);
 976   SetUsesScreenCoordinates(modal_container);
 977   SetUsesEasyResizeTargeter(modal_container);
 978
 979   // TODO(beng): Figure out if we can make this use
 980   // SystemModalContainerEventFilter instead of stops_event_propagation.
 981   aura::Window* lock_container = CreateContainer(
 982       kShellWindowId_LockScreenContainer,
 983       "LockScreenContainer",
 984       lock_screen_containers);
 985   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_container);
 986   if (CommandLine::ForCurrentProcess()->HasSwitch(
 987           switches::kAshDisableLockLayoutManager)) {
 988     lock_container->SetLayoutManager(
 989             new WorkspaceLayoutManager(lock_container));
 990   } else {
 991     lock_container->SetLayoutManager(new LockLayoutManager(lock_container));
 992   }
 993   SetUsesScreenCoordinates(lock_container);
 994   // TODO(beng): stopsevents
 995
 996   aura::Window* lock_modal_container = CreateContainer(
 997       kShellWindowId_LockSystemModalContainer,
 998       "LockSystemModalContainer",
 999       lock_screen_containers);
1000   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_modal_container);
1001   lock_modal_container->SetLayoutManager(
1002       new SystemModalContainerLayoutManager(lock_modal_container));
1003   ::wm::SetChildWindowVisibilityChangesAnimated(lock_modal_container);
1004   SetUsesScreenCoordinates(lock_modal_container);
1005   SetUsesEasyResizeTargeter(lock_modal_container);
1006
1007   aura::Window* status_container =
1008       CreateContainer(kShellWindowId_StatusContainer,
1009                       "StatusContainer",
1010                       lock_screen_related_containers);
1011   wm::SetSnapsChildrenToPhysicalPixelBoundary(status_container);
1012   SetUsesScreenCoordinates(status_container);
1013   DescendantShouldStayInSameRootWindow(status_container);
1014
1015   aura::Window* settings_bubble_container = CreateContainer(
1016       kShellWindowId_SettingBubbleContainer,
1017       "SettingBubbleContainer",
1018       lock_screen_related_containers);
1019   ::wm::SetChildWindowVisibilityChangesAnimated(settings_bubble_container);
1020   wm::SetSnapsChildrenToPhysicalPixelBoundary(settings_bubble_container);
1021   SetUsesScreenCoordinates(settings_bubble_container);
1022   DescendantShouldStayInSameRootWindow(settings_bubble_container);
1023
1024   aura::Window* menu_container = CreateContainer(
1025       kShellWindowId_MenuContainer,
1026       "MenuContainer",
1027       lock_screen_related_containers);
1028   ::wm::SetChildWindowVisibilityChangesAnimated(menu_container);
1029   wm::SetSnapsChildrenToPhysicalPixelBoundary(menu_container);
1030   SetUsesScreenCoordinates(menu_container);
1031
1032   aura::Window* drag_drop_container = CreateContainer(
1033       kShellWindowId_DragImageAndTooltipContainer,
1034       "DragImageAndTooltipContainer",
1035       lock_screen_related_containers);
1036   ::wm::SetChildWindowVisibilityChangesAnimated(drag_drop_container);
1037   wm::SetSnapsChildrenToPhysicalPixelBoundary(drag_drop_container);
1038   SetUsesScreenCoordinates(drag_drop_container);
1039
1040   aura::Window* overlay_container = CreateContainer(
1041       kShellWindowId_OverlayContainer,
1042       "OverlayContainer",
1043       lock_screen_related_containers);
1044   wm::SetSnapsChildrenToPhysicalPixelBoundary(overlay_container);
1045   SetUsesScreenCoordinates(overlay_container);
1046
1047   aura::Window* virtual_keyboard_parent_container = CreateContainer(
1048       kShellWindowId_VirtualKeyboardParentContainer,
1049       "VirtualKeyboardParentContainer",
1050       root_window);
1051   wm::SetSnapsChildrenToPhysicalPixelBoundary(
1052       virtual_keyboard_parent_container);
1053   SetUsesScreenCoordinates(virtual_keyboard_parent_container);
1054
1055 #if defined(OS_CHROMEOS)
1056   aura::Window* mouse_cursor_container = CreateContainer(
1057       kShellWindowId_MouseCursorContainer,
1058       "MouseCursorContainer",
1059       root_window);
1060   SetUsesScreenCoordinates(mouse_cursor_container);
1061 #endif
1062
1063   CreateContainer(kShellWindowId_PowerButtonAnimationContainer,
1064                   "PowerButtonAnimationContainer", root_window);
1065 }
1066
1067 void RootWindowController::EnableTouchHudProjection() {
1068   if (touch_hud_projection_)
1069     return;
1070   set_touch_hud_projection(new TouchHudProjection(GetRootWindow()));
1071 }
1072
1073 void RootWindowController::DisableTouchHudProjection() {
1074   if (!touch_hud_projection_)
1075     return;
1076   touch_hud_projection_->Remove();
1077 }
1078
1079 void RootWindowController::OnLoginStateChanged(user::LoginStatus status) {
1080   shelf_->shelf_layout_manager()->UpdateVisibilityState();
1081 }
1082
1083 void RootWindowController::OnTouchHudProjectionToggled(bool enabled) {
1084   if (enabled)
1085     EnableTouchHudProjection();
1086   else
1087     DisableTouchHudProjection();
1088 }
1089
1090 RootWindowController* GetRootWindowController(
1091     const aura::Window* root_window) {
1092   return root_window ? GetRootWindowSettings(root_window)->controller : NULL;
1093 }
1094
1095 }  // namespace ash