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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <map>
#include <memory>
#include "ash/ash_export.h"
#include "ash/common/shelf/shelf_types.h"
#include "ash/common/shell_observer.h"
#include "base/macros.h"
#include "ui/aura/window.h"
#include "ui/aura/window_tree_host.h"
#include "ui/base/ui_base_types.h"
class SkBitmap;
namespace aura {
class EventFilter;
class Window;
namespace gfx {
class Point;
namespace keyboard {
class KeyboardController;
namespace ui {
class EventHandler;
class MenuModel;
namespace views {
class MenuModelAdapter;
class MenuRunner;
class Widget;
namespace wm {
class InputMethodEventFilter;
class RootWindowEventFilter;
class ScopedCaptureClient;
namespace ash {
class AshWindowTreeHost;
class AlwaysOnTopController;
class DockedWindowLayoutManager;
enum class LoginStatus;
class PanelLayoutManager;
class ShelfLayoutManager;
class StackingController;
class StatusAreaWidget;
class SystemModalContainerLayoutManager;
class SystemTray;
class SystemWallpaperController;
class TouchHudDebug;
class TouchHudProjection;
class WmRootWindowControllerAura;
class WmShelfAura;
class WmWindow;
class WorkspaceController;
#if defined(OS_CHROMEOS)
class BootSplashScreen;
class AshTouchExplorationManager;
// This class maintains the per root window state for ash. This class
// owns the root window and other dependent objects that should be
// deleted upon the deletion of the root window. This object is
// indirectly owned and deleted by |WindowTreeHostManager|.
// The RootWindowController for particular root window is stored in
// its property (RootWindowSettings) and can be obtained using
// |GetRootWindowController(aura::WindowEventDispatcher*)| function.
// NOTE: In classic ash there is one RootWindow per display, so every RootWindow
// has a RootWindowController. In mus/mash there is one RootWindow per top-level
// Widget, so not all RootWindows have a RootWindowController.
class ASH_EXPORT RootWindowController : public ShellObserver {
// Creates and Initialize the RootWindowController for primary display.
static void CreateForPrimaryDisplay(AshWindowTreeHost* host);
// Creates and Initialize the RootWindowController for secondary displays.
static void CreateForSecondaryDisplay(AshWindowTreeHost* host);
// Returns a RootWindowController of the window's root window.
static RootWindowController* ForWindow(const aura::Window* window);
// Returns the RootWindowController of the target root window.
static RootWindowController* ForTargetRootWindow();
~RootWindowController() override;
AshWindowTreeHost* ash_host() { return ash_host_.get(); }
const AshWindowTreeHost* ash_host() const { return ash_host_.get(); }
aura::WindowTreeHost* GetHost();
const aura::WindowTreeHost* GetHost() const;
aura::Window* GetRootWindow();
const aura::Window* GetRootWindow() const;
WorkspaceController* workspace_controller();
AlwaysOnTopController* always_on_top_controller() {
return always_on_top_controller_.get();
WmShelfAura* wm_shelf_aura() const { return wm_shelf_aura_.get(); }
// Get touch HUDs associated with this root window controller.
TouchHudDebug* touch_hud_debug() const { return touch_hud_debug_; }
TouchHudProjection* touch_hud_projection() const {
return touch_hud_projection_;
// Set touch HUDs for this root window controller. The root window controller
// will not own the HUDs; their lifetimes are managed by themselves. Whenever
// the widget showing a HUD is being destroyed (e.g. because of detaching a
// display), the HUD deletes itself.
void set_touch_hud_debug(TouchHudDebug* hud) { touch_hud_debug_ = hud; }
void set_touch_hud_projection(TouchHudProjection* hud) {
touch_hud_projection_ = hud;
// Access the shelf layout manager associated with this root
// window controller, NULL if no such shelf exists.
ShelfLayoutManager* GetShelfLayoutManager();
// May return null, for example for a secondary monitor at the login screen.
StatusAreaWidget* GetStatusAreaWidget();
// Returns the system tray on this root window. Note that
// calling this on the root window that doesn't have a shelf will
// lead to a crash.
SystemTray* GetSystemTray();
// Shows context menu at the |location_in_screen|. This uses
// |ShellDelegate::CreateContextMenu| to define the content of the menu.
void ShowContextMenu(const gfx::Point& location_in_screen,
ui::MenuSourceType source_type);
// True if the window can receive events on this root window.
bool CanWindowReceiveEvents(aura::Window* window);
// Returns the layout-manager for the appropriate modal-container. If the
// window is inside the lockscreen modal container, then the layout manager
// for that is returned. Otherwise the layout manager for the default modal
// container is returned.
// If no window is specified (i.e. |window| is NULL), then the lockscreen
// modal container is used if the screen is currently locked. Otherwise, the
// default modal container is used.
SystemModalContainerLayoutManager* GetSystemModalLayoutManager(
aura::Window* window);
aura::Window* GetContainer(int container_id);
const aura::Window* GetContainer(int container_id) const;
// Show shelf view if it was created hidden (before session has started).
// TODO(jamescook): Eliminate this and handle show via Shelf.
void ShowShelf();
// Creates the shelf for this root window and notifies observers.
void CreateShelf();
// Called when the login status changes after login (such as lock/unlock).
// TODO(oshima): Investigate if we can merge this and |OnLoginStateChanged|.
void UpdateAfterLoginStatusChange(LoginStatus status);
// Called when the brightness/grayscale animation from white to the login
// wallpaper image has started. Starts |boot_splash_screen_|'s hiding
// animation (if the screen is non-NULL).
void OnInitialWallpaperAnimationStarted();
// Called when the wallpaper animation is finished. Updates
// |system_wallpaper_| to be black and drops |boot_splash_screen_| and moves
// the wallpaper controller into the root window controller. |widget| holds
// the wallpaper image, or NULL if the wallpaper is a solid color.
void OnWallpaperAnimationFinished(views::Widget* widget);
// Deletes associated objects and clears the state, but doesn't delete
// the root window yet. This is used to delete a secondary displays'
// root window safely when the display disconnect signal is received,
// which may come while we're in the nested message loop.
void Shutdown();
// Deletes all child windows and performs necessary cleanup.
void CloseChildWindows();
// Moves child windows to |dest|.
void MoveWindowsTo(aura::Window* dest);
// Force the shelf to query for it's current visibility state.
void UpdateShelfVisibility();
// Initialize touch HUDs if necessary.
void InitTouchHuds();
// Returns the topmost window or one of its transient parents, if any of them
// are in fullscreen mode.
aura::Window* GetWindowForFullscreenMode();
// Activate virtual keyboard on current root window controller.
void ActivateKeyboard(keyboard::KeyboardController* keyboard_controller);
// Deactivate virtual keyboard on current root window controller.
void DeactivateKeyboard(keyboard::KeyboardController* keyboard_controller);
// Tests if a window is associated with the virtual keyboard.
bool IsVirtualKeyboardWindow(aura::Window* window);
// If touch exploration is enabled, update the touch exploration
// controller so that synthesized touch events are anchored at this point.
void SetTouchAccessibilityAnchorPoint(const gfx::Point& anchor_point);
explicit RootWindowController(AshWindowTreeHost* host);
enum RootWindowType { PRIMARY, SECONDARY };
// Initializes the RootWindowController. |is_primary| is true if
// the controller is for primary display. |first_run_after_boot| is
// set to true only for primary root window after boot.
void Init(RootWindowType root_window_type, bool first_run_after_boot);
void InitLayoutManagers();
// Initializes |system_wallpaper_| and possibly also |boot_splash_screen_|.
// |is_first_run_after_boot| determines the wallpaper's initial color.
void CreateSystemWallpaper(bool is_first_run_after_boot);
// Enables projection touch HUD.
void EnableTouchHudProjection();
// Disables projection touch HUD.
void DisableTouchHudProjection();
// Callback for MenuModelAdapter.
void OnMenuClosed();
// Overridden from ShellObserver.
void OnLoginStateChanged(LoginStatus status) override;
void OnTouchHudProjectionToggled(bool enabled) override;
std::unique_ptr<AshWindowTreeHost> ash_host_;
// Owned by the root window.
WmRootWindowControllerAura* wm_root_window_controller_ = nullptr;
std::unique_ptr<StackingController> stacking_controller_;
// The shelf controller for this root window. Exists for the entire lifetime
// of the RootWindowController so that it is safe for observers to be added
// to it during construction of the shelf widget and status tray.
std::unique_ptr<WmShelfAura> wm_shelf_aura_;
// An invisible/empty window used as a event target for
// |MouseCursorEventFilter| before a user logs in.
// (
// Its container is |LockScreenWallpaperContainer| and
// this must be deleted before the container is deleted.
std::unique_ptr<aura::Window> mouse_event_target_;
// Manages layout of docked windows. Owned by DockedContainer.
DockedWindowLayoutManager* docked_layout_manager_;
// Manages layout of panels. Owned by PanelContainer.
PanelLayoutManager* panel_layout_manager_;
std::unique_ptr<SystemWallpaperController> system_wallpaper_;
#if defined(OS_CHROMEOS)
std::unique_ptr<BootSplashScreen> boot_splash_screen_;
// Responsible for initializing TouchExplorationController when spoken
// feedback is on.
std::unique_ptr<AshTouchExplorationManager> touch_exploration_manager_;
std::unique_ptr<AlwaysOnTopController> always_on_top_controller_;
// Heads-up displays for touch events. These HUDs are not owned by the root
// window controller and manage their own lifetimes.
TouchHudDebug* touch_hud_debug_;
TouchHudProjection* touch_hud_projection_;
// Handles double clicks on the panel window header.
std::unique_ptr<ui::EventHandler> panel_container_handler_;
std::unique_ptr<::wm::ScopedCaptureClient> capture_client_;
// Manages the context menu.
std::unique_ptr<ui::MenuModel> menu_model_;
std::unique_ptr<views::MenuModelAdapter> menu_model_adapter_;
std::unique_ptr<views::MenuRunner> menu_runner_;
// On classic ash, returns the RootWindowController for the given |root_window|.
// On mus ash, returns the RootWindowController for the primary display.
// See RootWindowController class comment above.
ASH_EXPORT RootWindowController* GetRootWindowController(
const aura::Window* root_window);
} // namespace ash