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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.
#ifndef ASH_WM_TOPLEVEL_WINDOW_EVENT_HANDLER_H_
#define ASH_WM_TOPLEVEL_WINDOW_EVENT_HANDLER_H_
#include <set>
#include "ash/ash_export.h"
#include "ash/display/display_controller.h"
#include "base/callback.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "ui/aura/client/window_move_client.h"
#include "ui/base/events/event_handler.h"
#include "ui/gfx/point.h"
#include "ui/gfx/rect.h"
namespace aura {
class Window;
}
namespace ui {
class LocatedEvent;
}
namespace ash {
class WindowResizer;
class ASH_EXPORT ToplevelWindowEventHandler
: public ui::EventHandler,
public aura::client::WindowMoveClient,
public DisplayController::Observer {
public:
explicit ToplevelWindowEventHandler(aura::Window* owner);
virtual ~ToplevelWindowEventHandler();
// Overridden from ui::EventHandler:
virtual ui::EventResult OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
virtual ui::EventResult OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
virtual ui::EventResult OnScrollEvent(ui::ScrollEvent* event) OVERRIDE;
virtual ui::EventResult OnTouchEvent(ui::TouchEvent* event) OVERRIDE;
virtual ui::EventResult OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
// Overridden form aura::client::WindowMoveClient:
virtual aura::client::WindowMoveResult RunMoveLoop(
aura::Window* source,
const gfx::Vector2d& drag_offset) OVERRIDE;
virtual void EndMoveLoop() OVERRIDE;
// Overridden form ash::DisplayController::Observer:
virtual void OnDisplayConfigurationChanging() OVERRIDE;
private:
class ScopedWindowResizer;
enum DragCompletionStatus {
DRAG_COMPLETE,
DRAG_REVERT
};
void CreateScopedWindowResizer(aura::Window* window,
const gfx::Point& point_in_parent,
int window_component);
// Finishes the drag.
void CompleteDrag(DragCompletionStatus status, int event_flags);
ui::EventResult HandleMousePressed(aura::Window* target,
ui::MouseEvent* event);
ui::EventResult HandleMouseReleased(aura::Window* target,
ui::MouseEvent* event);
// Called during a drag to resize/position the window.
// The return value is returned by OnMouseEvent() above.
ui::EventResult HandleDrag(aura::Window* target, ui::LocatedEvent* event);
// Called during mouse moves to update window resize shadows.
// Return value is returned by OnMouseEvent() above.
ui::EventResult HandleMouseMoved(aura::Window* target,
ui::LocatedEvent* event);
// Called for mouse exits to hide window resize shadows.
// Return value is returned by OnMouseEvent() above.
ui::EventResult HandleMouseExited(aura::Window* target,
ui::LocatedEvent* event);
// Invoked from ScopedWindowResizer if the window is destroyed.
void ResizerWindowDestroyed();
// Are we running a nested message loop from RunMoveLoop().
bool in_move_loop_;
// Was the move operation cancelled? Used only when the nested loop
// is used to move a window.
bool move_cancelled_;
// Is a gesture-resize in progress?
bool in_gesture_resize_;
scoped_ptr<ScopedWindowResizer> window_resizer_;
base::Closure quit_closure_;
// Used to track if this object is deleted while running a nested message
// loop. If non-null the destructor sets this to true.
bool* destroyed_;
DISALLOW_COPY_AND_ASSIGN(ToplevelWindowEventHandler);
};
} // namespace aura
#endif // ASH_WM_TOPLEVEL_WINDOW_EVENT_HANDLER_H_
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