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// Copyright (c) 2011 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_VIEWS_CONTROLS_SCROLLBAR_BASE_SCROLL_BAR_BUTTON_H_
#define UI_VIEWS_CONTROLS_SCROLLBAR_BASE_SCROLL_BAR_BUTTON_H_
#include "ui/views/controls/button/button.h"
#include "base/macros.h"
#include "build/build_config.h"
#include "ui/views/repeat_controller.h"
namespace base {
class TickClock;
}
namespace views {
///////////////////////////////////////////////////////////////////////////////
//
// ScrollBarButton
//
// A button that activates on mouse pressed rather than released, and that
// continues to fire the clicked action as the mouse button remains pressed
// down on the button.
//
///////////////////////////////////////////////////////////////////////////////
class VIEWS_EXPORT BaseScrollBarButton : public Button {
public:
METADATA_HEADER(BaseScrollBarButton);
explicit BaseScrollBarButton(PressedCallback callback,
const base::TickClock* tick_clock = nullptr);
~BaseScrollBarButton() override;
protected:
bool OnMousePressed(const ui::MouseEvent& event) override;
void OnMouseReleased(const ui::MouseEvent& event) override;
void OnMouseCaptureLost() override;
private:
void RepeaterNotifyClick();
// The repeat controller that we use to repeatedly click the button when the
// mouse button is down.
RepeatController repeater_;
DISALLOW_COPY_AND_ASSIGN(BaseScrollBarButton);
};
} // namespace views
#endif // UI_VIEWS_CONTROLS_SCROLLBAR_BASE_SCROLL_BAR_BUTTON_H_
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