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(ui::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       kShellWindowId_OverlayContainer,
 166   };
 167   const int kExtraContainerIdsToMoveInUnifiedMode[] = {
 168       kShellWindowId_LockScreenContainer,
 169       kShellWindowId_LockScreenBackgroundContainer,
 170   };
 171   std::vector<int> container_ids(
 172       kContainerIdsToMove,
 173       kContainerIdsToMove + arraysize(kContainerIdsToMove));
 174   // Check the default_multi_display_mode because this is also necessary
 175   // in trasition between mirror <-> unified mode.
 176   if (Shell::GetInstance()->display_manager()->default_multi_display_mode() ==
 177       DisplayManager::UNIFIED) {
 178     for (int id : kExtraContainerIdsToMoveInUnifiedMode)
 179       container_ids.push_back(id);
 180   }
 181
 182   for (int id : container_ids) {
 183     aura::Window* src_container = Shell::GetContainer(src, id);
 184     aura::Window* dst_container = Shell::GetContainer(dst, id);
 185     while (!src_container->children().empty()) {
 186       // Restart iteration from the source container windows each time as they
 187       // may change as a result of moving other windows.
 188       aura::Window::Windows::const_iterator iter =
 189           src_container->children().begin();
 190       while (iter != src_container->children().end() &&
 191              SystemModalContainerLayoutManager::IsModalBackground(*iter)) {
 192         ++iter;
 193       }
 194       // If the entire window list is modal background windows then stop.
 195       if (iter == src_container->children().end())
 196         break;
 197       ReparentWindow(*iter, dst_container);
 198     }
 199   }
 200 }
 201
 202 // Mark the container window so that a widget added to this container will
 203 // use the virtual screeen coordinates instead of parent.
 204 void SetUsesScreenCoordinates(aura::Window* container) {
 205   container->SetProperty(kUsesScreenCoordinatesKey, true);
 206 }
 207
 208 // Mark the container window so that a widget added to this container will
 209 // say in the same root window regardless of the bounds specified.
 210 void DescendantShouldStayInSameRootWindow(aura::Window* container) {
 211   container->SetProperty(kStayInSameRootWindowKey, true);
 212 }
 213
 214 void SetUsesEasyResizeTargeter(aura::Window* container) {
 215   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 216                            -kResizeOutsideBoundsSize,
 217                            -kResizeOutsideBoundsSize,
 218                            -kResizeOutsideBoundsSize);
 219   gfx::Insets touch_extend = mouse_extend.Scale(
 220       kResizeOutsideBoundsScaleForTouch);
 221   container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 222       new ::wm::EasyResizeWindowTargeter(container, mouse_extend,
 223                                          touch_extend)));
 224 }
 225
 226 // A window delegate which does nothing. Used to create a window that
 227 // is a event target, but do nothing.
 228 class EmptyWindowDelegate : public aura::WindowDelegate {
 229  public:
 230   EmptyWindowDelegate() {}
 231   ~EmptyWindowDelegate() override {}
 232
 233   // aura::WindowDelegate overrides:
 234   gfx::Size GetMinimumSize() const override { return gfx::Size(); }
 235   gfx::Size GetMaximumSize() const override { return gfx::Size(); }
 236   void OnBoundsChanged(const gfx::Rect& old_bounds,
 237                        const gfx::Rect& new_bounds) override {}
 238   gfx::NativeCursor GetCursor(const gfx::Point& point) override {
 239     return gfx::kNullCursor;
 240   }
 241   int GetNonClientComponent(const gfx::Point& point) const override {
 242     return HTNOWHERE;
 243   }
 244   bool ShouldDescendIntoChildForEventHandling(
 245       aura::Window* child,
 246       const gfx::Point& location) override {
 247     return false;
 248   }
 249   bool CanFocus() override { return false; }
 250   void OnCaptureLost() override {}
 251   void OnPaint(const ui::PaintContext& context) override {}
 252   void OnDeviceScaleFactorChanged(float device_scale_factor) override {}
 253   void OnWindowDestroying(aura::Window* window) override {}
 254   void OnWindowDestroyed(aura::Window* window) override { delete this; }
 255   void OnWindowTargetVisibilityChanged(bool visible) override {}
 256   bool HasHitTestMask() const override { return false; }
 257   void GetHitTestMask(gfx::Path* mask) const override {}
 258
 259  private:
 260   DISALLOW_COPY_AND_ASSIGN(EmptyWindowDelegate);
 261 };
 262
 263 }  // namespace
 264
 265 void RootWindowController::CreateForPrimaryDisplay(AshWindowTreeHost* host) {
 266   RootWindowController* controller = new RootWindowController(host);
 267   controller->Init(RootWindowController::PRIMARY,
 268                    Shell::GetInstance()->delegate()->IsFirstRunAfterBoot());
 269 }
 270
 271 void RootWindowController::CreateForSecondaryDisplay(AshWindowTreeHost* host) {
 272   RootWindowController* controller = new RootWindowController(host);
 273   controller->Init(RootWindowController::SECONDARY, false /* first run */);
 274 }
 275
 276 // static
 277 RootWindowController* RootWindowController::ForShelf(
 278     const aura::Window* window) {
 279   CHECK(Shell::HasInstance());
 280   return GetRootWindowController(window->GetRootWindow());
 281 }
 282
 283 // static
 284 RootWindowController* RootWindowController::ForWindow(
 285     const aura::Window* window) {
 286   CHECK(Shell::HasInstance());
 287   return GetRootWindowController(window->GetRootWindow());
 288 }
 289
 290 // static
 291 RootWindowController* RootWindowController::ForTargetRootWindow() {
 292   CHECK(Shell::HasInstance());
 293   return GetRootWindowController(Shell::GetTargetRootWindow());
 294 }
 295
 296 // static
 297 aura::Window* RootWindowController::GetContainerForWindow(
 298     aura::Window* window) {
 299   aura::Window* container = window->parent();
 300   while (container && container->type() != ui::wm::WINDOW_TYPE_UNKNOWN)
 301     container = container->parent();
 302   return container;
 303 }
 304
 305 RootWindowController::~RootWindowController() {
 306   Shutdown();
 307   ash_host_.reset();
 308   // The CaptureClient needs to be around for as long as the RootWindow is
 309   // valid.
 310   capture_client_.reset();
 311 }
 312
 313 aura::WindowTreeHost* RootWindowController::GetHost() {
 314   return ash_host_->AsWindowTreeHost();
 315 }
 316
 317 const aura::WindowTreeHost* RootWindowController::GetHost() const {
 318   return ash_host_->AsWindowTreeHost();
 319 }
 320
 321 aura::Window* RootWindowController::GetRootWindow() {
 322   return GetHost()->window();
 323 }
 324
 325 const aura::Window* RootWindowController::GetRootWindow() const {
 326   return GetHost()->window();
 327 }
 328
 329 void RootWindowController::SetWallpaperController(
 330     DesktopBackgroundWidgetController* controller) {
 331   wallpaper_controller_.reset(controller);
 332 }
 333
 334 void RootWindowController::SetAnimatingWallpaperController(
 335     AnimatingDesktopController* controller) {
 336   if (animating_wallpaper_controller_.get())
 337     animating_wallpaper_controller_->StopAnimating();
 338   animating_wallpaper_controller_.reset(controller);
 339 }
 340
 341 void RootWindowController::Shutdown() {
 342   Shell* shell = Shell::GetInstance();
 343   shell->RemoveShellObserver(this);
 344
 345 #if defined(OS_CHROMEOS)
 346   if (touch_exploration_manager_) {
 347     touch_exploration_manager_.reset();
 348   }
 349 #endif
 350
 351   if (animating_wallpaper_controller_.get())
 352     animating_wallpaper_controller_->StopAnimating();
 353   wallpaper_controller_.reset();
 354   animating_wallpaper_controller_.reset();
 355   aura::Window* root_window = GetRootWindow();
 356   // Change the target root window before closing child windows. If any child
 357   // being removed triggers a relayout of the shelf it will try to build a
 358   // window list adding windows from the target root window's containers which
 359   // may have already gone away.
 360   if (Shell::GetTargetRootWindow() == root_window) {
 361     shell->set_target_root_window(
 362         Shell::GetPrimaryRootWindow() == root_window
 363             ? NULL
 364             : Shell::GetPrimaryRootWindow());
 365   }
 366
 367   CloseChildWindows();
 368   GetRootWindowSettings(root_window)->controller = NULL;
 369   screen_dimmer_.reset();
 370   workspace_controller_.reset();
 371   // Forget with the display ID so that display lookup
 372   // ends up with invalid display.
 373   GetRootWindowSettings(root_window)->display_id =
 374       gfx::Display::kInvalidDisplayID;
 375   ash_host_->PrepareForShutdown();
 376
 377   system_background_.reset();
 378   aura::client::SetScreenPositionClient(root_window, NULL);
 379 }
 380
 381 SystemModalContainerLayoutManager*
 382 RootWindowController::GetSystemModalLayoutManager(aura::Window* window) {
 383   aura::Window* modal_container = NULL;
 384   if (window) {
 385     aura::Window* window_container = GetContainerForWindow(window);
 386     if (window_container &&
 387         window_container->id() >= kShellWindowId_LockScreenContainer) {
 388       modal_container = GetContainer(kShellWindowId_LockSystemModalContainer);
 389     } else {
 390       modal_container = GetContainer(kShellWindowId_SystemModalContainer);
 391     }
 392   } else {
 393     int modal_window_id = Shell::GetInstance()->session_state_delegate()
 394         ->IsUserSessionBlocked() ? kShellWindowId_LockSystemModalContainer :
 395                                    kShellWindowId_SystemModalContainer;
 396     modal_container = GetContainer(modal_window_id);
 397   }
 398   return modal_container ? static_cast<SystemModalContainerLayoutManager*>(
 399       modal_container->layout_manager()) : NULL;
 400 }
 401
 402 aura::Window* RootWindowController::GetContainer(int container_id) {
 403   return GetRootWindow()->GetChildById(container_id);
 404 }
 405
 406 const aura::Window* RootWindowController::GetContainer(int container_id) const {
 407   return ash_host_->AsWindowTreeHost()->window()->GetChildById(container_id);
 408 }
 409
 410 void RootWindowController::ShowShelf() {
 411   if (!shelf_->shelf())
 412     return;
 413   shelf_->shelf()->SetVisible(true);
 414   shelf_->status_area_widget()->Show();
 415 }
 416
 417 void RootWindowController::OnShelfCreated() {
 418   if (panel_layout_manager_)
 419     panel_layout_manager_->SetShelf(shelf_->shelf());
 420   if (docked_layout_manager_) {
 421     docked_layout_manager_->SetShelf(shelf_->shelf());
 422     if (shelf_->shelf_layout_manager())
 423       docked_layout_manager_->AddObserver(shelf_->shelf_layout_manager());
 424   }
 425
 426   // Notify shell observers that the shelf has been created.
 427   Shell::GetInstance()->OnShelfCreatedForRootWindow(GetRootWindow());
 428 }
 429
 430 void RootWindowController::UpdateAfterLoginStatusChange(
 431     user::LoginStatus status) {
 432   if (status != user::LOGGED_IN_NONE)
 433     mouse_event_target_.reset();
 434   if (shelf_->status_area_widget())
 435     shelf_->status_area_widget()->UpdateAfterLoginStatusChange(status);
 436 }
 437
 438 void RootWindowController::HandleInitialDesktopBackgroundAnimationStarted() {
 439 #if defined(OS_CHROMEOS)
 440   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 441           switches::kAshAnimateFromBootSplashScreen) &&
 442       boot_splash_screen_.get()) {
 443     // Make the splash screen fade out so it doesn't obscure the desktop
 444     // wallpaper's brightness/grayscale animation.
 445     boot_splash_screen_->StartHideAnimation(
 446         base::TimeDelta::FromMilliseconds(kBootSplashScreenHideDurationMs));
 447   }
 448 #endif
 449 }
 450
 451 void RootWindowController::OnWallpaperAnimationFinished(views::Widget* widget) {
 452   // Make sure the wallpaper is visible.
 453   system_background_->SetColor(SK_ColorBLACK);
 454 #if defined(OS_CHROMEOS)
 455   boot_splash_screen_.reset();
 456 #endif
 457
 458   Shell::GetInstance()->user_wallpaper_delegate()->
 459       OnWallpaperAnimationFinished();
 460   // Only removes old component when wallpaper animation finished. If we
 461   // remove the old one before the new wallpaper is done fading in there will
 462   // be a white flash during the animation.
 463   if (animating_wallpaper_controller()) {
 464     DesktopBackgroundWidgetController* controller =
 465         animating_wallpaper_controller()->GetController(true);
 466     // |desktop_widget_| should be the same animating widget we try to move
 467     // to |kDesktopController|. Otherwise, we may close |desktop_widget_|
 468     // before move it to |kDesktopController|.
 469     DCHECK_EQ(controller->widget(), widget);
 470     // Release the old controller and close its background widget.
 471     SetWallpaperController(controller);
 472   }
 473 }
 474
 475 void RootWindowController::CloseChildWindows() {
 476   mouse_event_target_.reset();
 477
 478   // Remove observer as deactivating keyboard causes |docked_layout_manager_|
 479   // to fire notifications.
 480   if (docked_layout_manager_ && shelf_ && shelf_->shelf_layout_manager())
 481     docked_layout_manager_->RemoveObserver(shelf_->shelf_layout_manager());
 482
 483   // Deactivate keyboard container before closing child windows and shutting
 484   // down associated layout managers.
 485   DeactivateKeyboard(keyboard::KeyboardController::GetInstance());
 486
 487   // panel_layout_manager_ needs to be shut down before windows are destroyed.
 488   if (panel_layout_manager_) {
 489     panel_layout_manager_->Shutdown();
 490     panel_layout_manager_ = NULL;
 491   }
 492   // docked_layout_manager_ needs to be shut down before windows are destroyed.
 493   if (docked_layout_manager_) {
 494     docked_layout_manager_->Shutdown();
 495     docked_layout_manager_ = NULL;
 496   }
 497   aura::Window* root_window = GetRootWindow();
 498   aura::client::SetDragDropClient(root_window, NULL);
 499
 500   // TODO(harrym): Remove when Status Area Widget is a child view.
 501   if (shelf_) {
 502     shelf_->ShutdownStatusAreaWidget();
 503
 504     if (shelf_->shelf_layout_manager())
 505       shelf_->shelf_layout_manager()->PrepareForShutdown();
 506   }
 507
 508   // Close background widget first as it depends on tooltip.
 509   wallpaper_controller_.reset();
 510   animating_wallpaper_controller_.reset();
 511
 512   workspace_controller_.reset();
 513   aura::client::SetTooltipClient(root_window, NULL);
 514
 515   // Explicitly destroy top level windows. We do this as during part of
 516   // destruction such windows may query the RootWindow for state.
 517   std::queue<aura::Window*> non_toplevel_windows;
 518   non_toplevel_windows.push(root_window);
 519   while (!non_toplevel_windows.empty()) {
 520     aura::Window* non_toplevel_window = non_toplevel_windows.front();
 521     non_toplevel_windows.pop();
 522     aura::WindowTracker toplevel_windows;
 523     for (size_t i = 0; i < non_toplevel_window->children().size(); ++i) {
 524       aura::Window* child = non_toplevel_window->children()[i];
 525       if (!child->owned_by_parent())
 526         continue;
 527       if (child->delegate())
 528         toplevel_windows.Add(child);
 529       else
 530         non_toplevel_windows.push(child);
 531     }
 532     while (!toplevel_windows.windows().empty())
 533       delete *toplevel_windows.windows().begin();
 534   }
 535   // And then remove the containers.
 536   while (!root_window->children().empty()) {
 537     aura::Window* window = root_window->children()[0];
 538     if (window->owned_by_parent()) {
 539       delete window;
 540     } else {
 541       root_window->RemoveChild(window);
 542     }
 543   }
 544
 545   shelf_.reset();
 546 }
 547
 548 void RootWindowController::MoveWindowsTo(aura::Window* dst) {
 549   // Forget the shelf early so that shelf don't update itself using wrong
 550   // display info.
 551   workspace_controller_->SetShelf(NULL);
 552   ReparentAllWindows(GetRootWindow(), dst);
 553 }
 554
 555 ShelfLayoutManager* RootWindowController::GetShelfLayoutManager() {
 556   return shelf_->shelf_layout_manager();
 557 }
 558
 559 SystemTray* RootWindowController::GetSystemTray() {
 560   // We assume in throughout the code that this will not return NULL. If code
 561   // triggers this for valid reasons, it should test status_area_widget first.
 562   CHECK(shelf_->status_area_widget());
 563   return shelf_->status_area_widget()->system_tray();
 564 }
 565
 566 void RootWindowController::ShowContextMenu(const gfx::Point& location_in_screen,
 567                                            ui::MenuSourceType source_type) {
 568   DCHECK(Shell::GetInstance()->delegate());
 569   scoped_ptr<ui::MenuModel> menu_model(
 570       Shell::GetInstance()->delegate()->CreateContextMenu(
 571           GetRootWindow(), NULL, NULL));
 572   if (!menu_model)
 573     return;
 574
 575   // Background controller may not be set yet if user clicked on status are
 576   // before initial animation completion. See crbug.com/222218
 577   if (!wallpaper_controller_.get())
 578     return;
 579
 580   views::MenuRunner menu_runner(menu_model.get(),
 581                                 views::MenuRunner::CONTEXT_MENU);
 582   if (menu_runner.RunMenuAt(wallpaper_controller_->widget(),
 583                             NULL,
 584                             gfx::Rect(location_in_screen, gfx::Size()),
 585                             views::MENU_ANCHOR_TOPLEFT,
 586                             source_type) == views::MenuRunner::MENU_DELETED) {
 587     return;
 588   }
 589
 590   Shell::GetInstance()->UpdateShelfVisibility();
 591 }
 592
 593 void RootWindowController::UpdateShelfVisibility() {
 594   shelf_->shelf_layout_manager()->UpdateVisibilityState();
 595 }
 596
 597 aura::Window* RootWindowController::GetWindowForFullscreenMode() {
 598   aura::Window* topmost_window = NULL;
 599   aura::Window* active_window = wm::GetActiveWindow();
 600   if (active_window && active_window->GetRootWindow() == GetRootWindow() &&
 601       IsSwitchableContainer(active_window->parent())) {
 602     // Use the active window when it is on the current root window to determine
 603     // the fullscreen state to allow temporarily using a panel or docked window
 604     // (which are always above the default container) while a fullscreen
 605     // window is open. We only use the active window when in a switchable
 606     // container as the launcher should not exit fullscreen mode.
 607     topmost_window = active_window;
 608   } else {
 609     // Otherwise, use the topmost window on the root window's default container
 610     // when there is no active window on this root window.
 611     const aura::Window::Windows& windows =
 612         GetContainer(kShellWindowId_DefaultContainer)->children();
 613     for (aura::Window::Windows::const_reverse_iterator iter = windows.rbegin();
 614          iter != windows.rend(); ++iter) {
 615       if (wm::IsWindowUserPositionable(*iter) &&
 616           (*iter)->layer()->GetTargetVisibility()) {
 617         topmost_window = *iter;
 618         break;
 619       }
 620     }
 621   }
 622   while (topmost_window) {
 623     if (wm::GetWindowState(topmost_window)->IsFullscreen())
 624       return topmost_window;
 625     topmost_window = ::wm::GetTransientParent(topmost_window);
 626   }
 627   return NULL;
 628 }
 629
 630 void RootWindowController::ActivateKeyboard(
 631     keyboard::KeyboardController* keyboard_controller) {
 632   if (!keyboard::IsKeyboardEnabled() ||
 633       GetContainer(kShellWindowId_VirtualKeyboardContainer)) {
 634     return;
 635   }
 636   DCHECK(keyboard_controller);
 637   keyboard_controller->AddObserver(shelf()->shelf_layout_manager());
 638   keyboard_controller->AddObserver(panel_layout_manager_);
 639   keyboard_controller->AddObserver(docked_layout_manager_);
 640   keyboard_controller->AddObserver(workspace_controller_->layout_manager());
 641   keyboard_controller->AddObserver(
 642       always_on_top_controller_->GetLayoutManager());
 643   Shell::GetInstance()->delegate()->VirtualKeyboardActivated(true);
 644   aura::Window* parent = GetContainer(kShellWindowId_ImeWindowParentContainer);
 645   DCHECK(parent);
 646   aura::Window* keyboard_container =
 647       keyboard_controller->GetContainerWindow();
 648   keyboard_container->set_id(kShellWindowId_VirtualKeyboardContainer);
 649   parent->AddChild(keyboard_container);
 650 }
 651
 652 void RootWindowController::DeactivateKeyboard(
 653     keyboard::KeyboardController* keyboard_controller) {
 654   if (!keyboard_controller ||
 655       !keyboard_controller->keyboard_container_initialized()) {
 656     return;
 657   }
 658   aura::Window* keyboard_container =
 659       keyboard_controller->GetContainerWindow();
 660   if (keyboard_container->GetRootWindow() == GetRootWindow()) {
 661     aura::Window* parent =
 662         GetContainer(kShellWindowId_ImeWindowParentContainer);
 663     DCHECK(parent);
 664     parent->RemoveChild(keyboard_container);
 665     // Virtual keyboard may be deactivated while still showing, notify all
 666     // observers that keyboard bounds changed to 0 before remove them.
 667     keyboard_controller->NotifyKeyboardBoundsChanging(gfx::Rect());
 668     keyboard_controller->RemoveObserver(shelf()->shelf_layout_manager());
 669     keyboard_controller->RemoveObserver(panel_layout_manager_);
 670     keyboard_controller->RemoveObserver(docked_layout_manager_);
 671     keyboard_controller->RemoveObserver(
 672         workspace_controller_->layout_manager());
 673     keyboard_controller->RemoveObserver(
 674         always_on_top_controller_->GetLayoutManager());
 675     Shell::GetInstance()->delegate()->VirtualKeyboardActivated(false);
 676   }
 677 }
 678
 679 bool RootWindowController::IsVirtualKeyboardWindow(aura::Window* window) {
 680   aura::Window* parent = GetContainer(kShellWindowId_ImeWindowParentContainer);
 681   return parent ? parent->Contains(window) : false;
 682 }
 683
 684 ////////////////////////////////////////////////////////////////////////////////
 685 // RootWindowController, private:
 686
 687 RootWindowController::RootWindowController(AshWindowTreeHost* ash_host)
 688     : ash_host_(ash_host),
 689       root_window_layout_(NULL),
 690       docked_layout_manager_(NULL),
 691       panel_layout_manager_(NULL),
 692       touch_hud_debug_(NULL),
 693       touch_hud_projection_(NULL) {
 694   aura::Window* root_window = GetRootWindow();
 695   GetRootWindowSettings(root_window)->controller = this;
 696   screen_dimmer_.reset(new ScreenDimmer(root_window));
 697
 698   stacking_controller_.reset(new StackingController);
 699   aura::client::SetWindowTreeClient(root_window, stacking_controller_.get());
 700   capture_client_.reset(new ::wm::ScopedCaptureClient(root_window));
 701 }
 702
 703 void RootWindowController::Init(RootWindowType root_window_type,
 704                                 bool first_run_after_boot) {
 705   aura::Window* root_window = GetRootWindow();
 706   Shell* shell = Shell::GetInstance();
 707   shell->InitRootWindow(root_window);
 708
 709   ash_host_->AsWindowTreeHost()->SetCursor(ui::kCursorPointer);
 710   CreateContainersInRootWindow(root_window);
 711
 712   CreateSystemBackground(first_run_after_boot);
 713
 714   InitLayoutManagers();
 715   InitTouchHuds();
 716
 717   if (Shell::GetPrimaryRootWindowController()->
 718       GetSystemModalLayoutManager(NULL)->has_modal_background()) {
 719     GetSystemModalLayoutManager(NULL)->CreateModalBackground();
 720   }
 721
 722   shell->AddShellObserver(this);
 723
 724   if (root_window_type == PRIMARY) {
 725     root_window_layout()->OnWindowResized();
 726     shell->InitKeyboard();
 727   } else {
 728     root_window_layout()->OnWindowResized();
 729     ash_host_->AsWindowTreeHost()->Show();
 730
 731     // Create a shelf if a user is already logged in.
 732     if (shell->session_state_delegate()->NumberOfLoggedInUsers())
 733       shelf()->CreateShelf();
 734
 735     // Notify shell observers about new root window.
 736     shell->OnRootWindowAdded(root_window);
 737   }
 738
 739 #if defined(OS_CHROMEOS)
 740   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
 741           switches::kAshDisableTouchExplorationMode)) {
 742     touch_exploration_manager_.reset(new AshTouchExplorationManager(this));
 743   }
 744 #endif
 745 }
 746
 747 void RootWindowController::InitLayoutManagers() {
 748   aura::Window* root_window = GetRootWindow();
 749   root_window_layout_ = new RootWindowLayoutManager(root_window);
 750   root_window->SetLayoutManager(root_window_layout_);
 751
 752   aura::Window* default_container =
 753       GetContainer(kShellWindowId_DefaultContainer);
 754   // Workspace manager has its own layout managers.
 755   workspace_controller_.reset(
 756       new WorkspaceController(default_container));
 757
 758   aura::Window* always_on_top_container =
 759       GetContainer(kShellWindowId_AlwaysOnTopContainer);
 760   always_on_top_controller_.reset(
 761       new AlwaysOnTopController(always_on_top_container));
 762
 763   DCHECK(!shelf_.get());
 764   aura::Window* shelf_container = GetContainer(kShellWindowId_ShelfContainer);
 765   // TODO(harrym): Remove when status area is view.
 766   aura::Window* status_container = GetContainer(kShellWindowId_StatusContainer);
 767   shelf_.reset(new ShelfWidget(
 768       shelf_container, status_container, workspace_controller()));
 769
 770   if (!Shell::GetInstance()->session_state_delegate()->
 771       IsActiveUserSessionStarted()) {
 772     // This window exists only to be a event target on login screen.
 773     // It does not have to handle events, nor be visible.
 774     mouse_event_target_.reset(new aura::Window(new EmptyWindowDelegate));
 775     mouse_event_target_->Init(ui::LAYER_NOT_DRAWN);
 776
 777     aura::Window* lock_background_container =
 778         GetContainer(kShellWindowId_LockScreenBackgroundContainer);
 779     lock_background_container->AddChild(mouse_event_target_.get());
 780     mouse_event_target_->Show();
 781   }
 782
 783   // Create Docked windows layout manager
 784   aura::Window* docked_container = GetContainer(kShellWindowId_DockedContainer);
 785   docked_layout_manager_ =
 786       new DockedWindowLayoutManager(docked_container, workspace_controller());
 787   docked_container->SetLayoutManager(docked_layout_manager_);
 788
 789   // Installs SnapLayoutManager to containers who set the
 790   // |kSnapsChildrenToPhysicalPixelBoundary| property.
 791   wm::InstallSnapLayoutManagerToContainers(root_window);
 792
 793   // Create Panel layout manager
 794   aura::Window* panel_container = GetContainer(kShellWindowId_PanelContainer);
 795   panel_layout_manager_ = new PanelLayoutManager(panel_container);
 796   panel_container->SetLayoutManager(panel_layout_manager_);
 797   panel_container_handler_.reset(new PanelWindowEventHandler);
 798   panel_container->AddPreTargetHandler(panel_container_handler_.get());
 799
 800   // Install an AttachedPanelWindowTargeter on the panel container to make it
 801   // easier to correctly target shelf buttons with touch.
 802   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 803                            -kResizeOutsideBoundsSize,
 804                            -kResizeOutsideBoundsSize,
 805                            -kResizeOutsideBoundsSize);
 806   gfx::Insets touch_extend = mouse_extend.Scale(
 807       kResizeOutsideBoundsScaleForTouch);
 808   panel_container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 809       new AttachedPanelWindowTargeter(panel_container,
 810                                       mouse_extend,
 811                                       touch_extend,
 812                                       panel_layout_manager_)));
 813 }
 814
 815 void RootWindowController::InitTouchHuds() {
 816   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 817   if (command_line->HasSwitch(switches::kAshTouchHud))
 818     set_touch_hud_debug(new TouchHudDebug(GetRootWindow()));
 819   if (Shell::GetInstance()->is_touch_hud_projection_enabled())
 820     EnableTouchHudProjection();
 821 }
 822
 823 void RootWindowController::CreateSystemBackground(
 824     bool is_first_run_after_boot) {
 825   SkColor color = SK_ColorBLACK;
 826 #if defined(OS_CHROMEOS)
 827   if (is_first_run_after_boot)
 828     color = kChromeOsBootColor;
 829 #endif
 830   system_background_.reset(
 831       new SystemBackgroundController(GetRootWindow(), color));
 832
 833 #if defined(OS_CHROMEOS)
 834   // Make a copy of the system's boot splash screen so we can composite it
 835   // onscreen until the desktop background is ready.
 836   if (is_first_run_after_boot &&
 837       (base::CommandLine::ForCurrentProcess()->HasSwitch(
 838            switches::kAshCopyHostBackgroundAtBoot) ||
 839        base::CommandLine::ForCurrentProcess()->HasSwitch(
 840            switches::kAshAnimateFromBootSplashScreen)))
 841     boot_splash_screen_.reset(new BootSplashScreen(GetHost()));
 842 #endif
 843 }
 844
 845 void RootWindowController::CreateContainersInRootWindow(
 846     aura::Window* root_window) {
 847   // These containers are just used by PowerButtonController to animate groups
 848   // of containers simultaneously without messing up the current transformations
 849   // on those containers. These are direct children of the root window; all of
 850   // the other containers are their children.
 851
 852   // The desktop background container is not part of the lock animation, so it
 853   // is not included in those animate groups.
 854   // When screen is locked desktop background is moved to lock screen background
 855   // container (moved back on unlock). We want to make sure that there's an
 856   // opaque layer occluding the non-lock-screen layers.
 857   aura::Window* desktop_background_container = CreateContainer(
 858       kShellWindowId_DesktopBackgroundContainer,
 859       "DesktopBackgroundContainer",
 860       root_window);
 861   ::wm::SetChildWindowVisibilityChangesAnimated(desktop_background_container);
 862
 863   aura::Window* non_lock_screen_containers = CreateContainer(
 864       kShellWindowId_NonLockScreenContainersContainer,
 865       "NonLockScreenContainersContainer",
 866       root_window);
 867   // Clip all windows inside this container, as half pixel of the window's
 868   // texture may become visible when the screen is scaled. crbug.com/368591.
 869   non_lock_screen_containers->layer()->SetMasksToBounds(true);
 870
 871   aura::Window* lock_background_containers = CreateContainer(
 872       kShellWindowId_LockScreenBackgroundContainer,
 873       "LockScreenBackgroundContainer",
 874       root_window);
 875   ::wm::SetChildWindowVisibilityChangesAnimated(lock_background_containers);
 876
 877   aura::Window* lock_screen_containers = CreateContainer(
 878       kShellWindowId_LockScreenContainersContainer,
 879       "LockScreenContainersContainer",
 880       root_window);
 881   aura::Window* lock_screen_related_containers = CreateContainer(
 882       kShellWindowId_LockScreenRelatedContainersContainer,
 883       "LockScreenRelatedContainersContainer",
 884       root_window);
 885
 886   CreateContainer(kShellWindowId_UnparentedControlContainer,
 887                   "UnparentedControlContainer",
 888                   non_lock_screen_containers);
 889
 890   aura::Window* default_container = CreateContainer(
 891       kShellWindowId_DefaultContainer,
 892       "DefaultContainer",
 893       non_lock_screen_containers);
 894   ::wm::SetChildWindowVisibilityChangesAnimated(default_container);
 895   wm::SetSnapsChildrenToPhysicalPixelBoundary(default_container);
 896   SetUsesScreenCoordinates(default_container);
 897   SetUsesEasyResizeTargeter(default_container);
 898
 899   aura::Window* always_on_top_container = CreateContainer(
 900       kShellWindowId_AlwaysOnTopContainer,
 901       "AlwaysOnTopContainer",
 902       non_lock_screen_containers);
 903   ::wm::SetChildWindowVisibilityChangesAnimated(always_on_top_container);
 904   wm::SetSnapsChildrenToPhysicalPixelBoundary(always_on_top_container);
 905   SetUsesScreenCoordinates(always_on_top_container);
 906
 907   aura::Window* docked_container = CreateContainer(
 908       kShellWindowId_DockedContainer,
 909       "DockedContainer",
 910       non_lock_screen_containers);
 911   ::wm::SetChildWindowVisibilityChangesAnimated(docked_container);
 912   wm::SetSnapsChildrenToPhysicalPixelBoundary(docked_container);
 913   SetUsesScreenCoordinates(docked_container);
 914   SetUsesEasyResizeTargeter(docked_container);
 915
 916   aura::Window* shelf_container =
 917       CreateContainer(kShellWindowId_ShelfContainer,
 918                       "ShelfContainer",
 919                       non_lock_screen_containers);
 920   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_container);
 921   SetUsesScreenCoordinates(shelf_container);
 922   DescendantShouldStayInSameRootWindow(shelf_container);
 923
 924   aura::Window* panel_container = CreateContainer(
 925       kShellWindowId_PanelContainer,
 926       "PanelContainer",
 927       non_lock_screen_containers);
 928   wm::SetSnapsChildrenToPhysicalPixelBoundary(panel_container);
 929   SetUsesScreenCoordinates(panel_container);
 930
 931   aura::Window* shelf_bubble_container =
 932       CreateContainer(kShellWindowId_ShelfBubbleContainer,
 933                       "ShelfBubbleContainer",
 934                       non_lock_screen_containers);
 935   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_bubble_container);
 936   SetUsesScreenCoordinates(shelf_bubble_container);
 937   DescendantShouldStayInSameRootWindow(shelf_bubble_container);
 938
 939   aura::Window* app_list_container =
 940       CreateContainer(kShellWindowId_AppListContainer,
 941                       "AppListContainer",
 942                       non_lock_screen_containers);
 943   wm::SetSnapsChildrenToPhysicalPixelBoundary(app_list_container);
 944   SetUsesScreenCoordinates(app_list_container);
 945
 946   aura::Window* modal_container = CreateContainer(
 947       kShellWindowId_SystemModalContainer,
 948       "SystemModalContainer",
 949       non_lock_screen_containers);
 950   wm::SetSnapsChildrenToPhysicalPixelBoundary(modal_container);
 951   modal_container->SetLayoutManager(
 952       new SystemModalContainerLayoutManager(modal_container));
 953   ::wm::SetChildWindowVisibilityChangesAnimated(modal_container);
 954   SetUsesScreenCoordinates(modal_container);
 955   SetUsesEasyResizeTargeter(modal_container);
 956
 957   // TODO(beng): Figure out if we can make this use
 958   // SystemModalContainerEventFilter instead of stops_event_propagation.
 959   aura::Window* lock_container = CreateContainer(
 960       kShellWindowId_LockScreenContainer,
 961       "LockScreenContainer",
 962       lock_screen_containers);
 963   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_container);
 964   lock_container->SetLayoutManager(new LockLayoutManager(lock_container));
 965   SetUsesScreenCoordinates(lock_container);
 966   // TODO(beng): stopsevents
 967
 968   aura::Window* lock_modal_container = CreateContainer(
 969       kShellWindowId_LockSystemModalContainer,
 970       "LockSystemModalContainer",
 971       lock_screen_containers);
 972   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_modal_container);
 973   lock_modal_container->SetLayoutManager(
 974       new SystemModalContainerLayoutManager(lock_modal_container));
 975   ::wm::SetChildWindowVisibilityChangesAnimated(lock_modal_container);
 976   SetUsesScreenCoordinates(lock_modal_container);
 977   SetUsesEasyResizeTargeter(lock_modal_container);
 978
 979   aura::Window* status_container =
 980       CreateContainer(kShellWindowId_StatusContainer,
 981                       "StatusContainer",
 982                       lock_screen_related_containers);
 983   wm::SetSnapsChildrenToPhysicalPixelBoundary(status_container);
 984   SetUsesScreenCoordinates(status_container);
 985   DescendantShouldStayInSameRootWindow(status_container);
 986
 987   aura::Window* settings_bubble_container = CreateContainer(
 988       kShellWindowId_SettingBubbleContainer,
 989       "SettingBubbleContainer",
 990       lock_screen_related_containers);
 991   ::wm::SetChildWindowVisibilityChangesAnimated(settings_bubble_container);
 992   wm::SetSnapsChildrenToPhysicalPixelBoundary(settings_bubble_container);
 993   SetUsesScreenCoordinates(settings_bubble_container);
 994   DescendantShouldStayInSameRootWindow(settings_bubble_container);
 995
 996   aura::Window* virtual_keyboard_parent_container =
 997       CreateContainer(kShellWindowId_ImeWindowParentContainer,
 998                       "VirtualKeyboardParentContainer",
 999                       lock_screen_related_containers);
1000   wm::SetSnapsChildrenToPhysicalPixelBoundary(
1001       virtual_keyboard_parent_container);
1002   SetUsesScreenCoordinates(virtual_keyboard_parent_container);
1003
1004   aura::Window* menu_container = CreateContainer(
1005       kShellWindowId_MenuContainer,
1006       "MenuContainer",
1007       lock_screen_related_containers);
1008   ::wm::SetChildWindowVisibilityChangesAnimated(menu_container);
1009   wm::SetSnapsChildrenToPhysicalPixelBoundary(menu_container);
1010   SetUsesScreenCoordinates(menu_container);
1011
1012   aura::Window* drag_drop_container = CreateContainer(
1013       kShellWindowId_DragImageAndTooltipContainer,
1014       "DragImageAndTooltipContainer",
1015       lock_screen_related_containers);
1016   ::wm::SetChildWindowVisibilityChangesAnimated(drag_drop_container);
1017   wm::SetSnapsChildrenToPhysicalPixelBoundary(drag_drop_container);
1018   SetUsesScreenCoordinates(drag_drop_container);
1019
1020   aura::Window* overlay_container = CreateContainer(
1021       kShellWindowId_OverlayContainer,
1022       "OverlayContainer",
1023       lock_screen_related_containers);
1024   wm::SetSnapsChildrenToPhysicalPixelBoundary(overlay_container);
1025   SetUsesScreenCoordinates(overlay_container);
1026
1027 #if defined(OS_CHROMEOS)
1028   aura::Window* mouse_cursor_container = CreateContainer(
1029       kShellWindowId_MouseCursorContainer,
1030       "MouseCursorContainer",
1031       root_window);
1032   SetUsesScreenCoordinates(mouse_cursor_container);
1033 #endif
1034
1035   CreateContainer(kShellWindowId_PowerButtonAnimationContainer,
1036                   "PowerButtonAnimationContainer", root_window);
1037 }
1038
1039 void RootWindowController::EnableTouchHudProjection() {
1040   if (touch_hud_projection_)
1041     return;
1042   set_touch_hud_projection(new TouchHudProjection(GetRootWindow()));
1043 }
1044
1045 void RootWindowController::DisableTouchHudProjection() {
1046   if (!touch_hud_projection_)
1047     return;
1048   touch_hud_projection_->Remove();
1049 }
1050
1051 void RootWindowController::OnLoginStateChanged(user::LoginStatus status) {
1052   shelf_->shelf_layout_manager()->UpdateVisibilityState();
1053 }
1054
1055 void RootWindowController::OnTouchHudProjectionToggled(bool enabled) {
1056   if (enabled)
1057     EnableTouchHudProjection();
1058   else
1059     DisableTouchHudProjection();
1060 }
1061
1062 RootWindowController* GetRootWindowController(
1063     const aura::Window* root_window) {
1064   return root_window ? GetRootWindowSettings(root_window)->controller : NULL;
1065 }
1066
1067 }  // namespace ash