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// Copyright (c) 2013 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_CURSOR_MANAGER_H_
#define UI_WM_CORE_CURSOR_MANAGER_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/observer_list.h"
#include "ui/aura/client/cursor_client.h"
#include "ui/base/cursor/cursor.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/wm/core/native_cursor_manager_delegate.h"
#include "ui/wm/wm_export.h"
namespace gfx {
class Display;
}
namespace ui {
class KeyEvent;
}
namespace wm {
namespace internal {
class CursorState;
}
class NativeCursorManager;
// This class receives requests to change cursor properties, as well as
// requests to queue any further changes until a later time. It sends changes
// to the NativeCursorManager, which communicates back to us when these changes
// were made through the NativeCursorManagerDelegate interface.
class WM_EXPORT CursorManager : public aura::client::CursorClient,
public NativeCursorManagerDelegate {
public:
explicit CursorManager(scoped_ptr<NativeCursorManager> delegate);
~CursorManager() override;
// Overridden from aura::client::CursorClient:
void SetCursor(gfx::NativeCursor) override;
gfx::NativeCursor GetCursor() const override;
void ShowCursor() override;
void HideCursor() override;
bool IsCursorVisible() const override;
void SetCursorSet(ui::CursorSetType cursor_set) override;
ui::CursorSetType GetCursorSet() const override;
void EnableMouseEvents() override;
void DisableMouseEvents() override;
bool IsMouseEventsEnabled() const override;
void SetDisplay(const gfx::Display& display) override;
void LockCursor() override;
void UnlockCursor() override;
bool IsCursorLocked() const override;
void AddObserver(aura::client::CursorClientObserver* observer) override;
void RemoveObserver(aura::client::CursorClientObserver* observer) override;
bool ShouldHideCursorOnKeyEvent(const ui::KeyEvent& event) const override;
private:
// Overridden from NativeCursorManagerDelegate:
void CommitCursor(gfx::NativeCursor cursor) override;
void CommitVisibility(bool visible) override;
void CommitCursorSet(ui::CursorSetType cursor_set) override;
void CommitMouseEventsEnabled(bool enabled) override;
scoped_ptr<NativeCursorManager> delegate_;
// Number of times LockCursor() has been invoked without a corresponding
// UnlockCursor().
int cursor_lock_count_;
// The current state of the cursor.
scoped_ptr<internal::CursorState> current_state_;
// The cursor state to restore when the cursor is unlocked.
scoped_ptr<internal::CursorState> state_on_unlock_;
ObserverList<aura::client::CursorClientObserver> observers_;
DISALLOW_COPY_AND_ASSIGN(CursorManager);
};
} // namespace wm
#endif // UI_WM_CORE_CURSOR_MANAGER_H_
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