It is time.

ui/wm/core/window_modality_controller.h

-// 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.
-
-#ifndef UI_WM_CORE_WINDOW_MODALITY_CONTROLLER_H_
-#define UI_WM_CORE_WINDOW_MODALITY_CONTROLLER_H_
-
-#include <vector>
-
-#include "base/compiler_specific.h"
-#include "ui/aura/env_observer.h"
-#include "ui/aura/window_observer.h"
-#include "ui/events/event_handler.h"
-#include "ui/wm/wm_export.h"
-
-namespace ui {
-class EventTarget;
-class LocatedEvent;
-}
-
-namespace wm {
-
-// Sets the modal parent for the child.
-WM_EXPORT void SetModalParent(aura::Window* child, aura::Window* parent);
-
-// Returns the modal transient child of |window|, or NULL if |window| does not
-// have any modal transient children.
-WM_EXPORT aura::Window* GetModalTransient(aura::Window* window);
-
-// WindowModalityController is an event filter that consumes events sent to
-// windows that are the transient parents of window-modal windows. This filter
-// must be added to the CompoundEventFilter so that activation works properly.
-class WM_EXPORT WindowModalityController : public ui::EventHandler,
-                                           public aura::EnvObserver,
-                                           public aura::WindowObserver {
- public:
-  explicit WindowModalityController(ui::EventTarget* event_target);
-  virtual ~WindowModalityController();
-
-  // Overridden from ui::EventHandler:
-  virtual void OnKeyEvent(ui::KeyEvent* event) override;
-  virtual void OnMouseEvent(ui::MouseEvent* event) override;
-  virtual void OnTouchEvent(ui::TouchEvent* event) override;
-
-  // Overridden from aura::EnvObserver:
-  virtual void OnWindowInitialized(aura::Window* window) override;
-
-  // Overridden from aura::WindowObserver:
-  virtual void OnWindowPropertyChanged(aura::Window* window,
-                                       const void* key,
-                                       intptr_t old) override;
-  virtual void OnWindowVisibilityChanged(aura::Window* window,
-                                         bool visible) override;
-  virtual void OnWindowDestroyed(aura::Window* window) override;
-
- private:
-  // Processes a mouse/touch event, and returns true if the event should be
-  // consumed.
-  bool ProcessLocatedEvent(aura::Window* target,
-                           ui::LocatedEvent* event);
-
-  std::vector<aura::Window*> windows_;
-
-  ui::EventTarget* event_target_;
-
-  DISALLOW_COPY_AND_ASSIGN(WindowModalityController);
-};
-
-}  // namespace wm
-
-#endif  // UI_WM_CORE_WINDOW_MODALITY_CONTROLLER_H_