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