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// Copyright (c) 2006-2008 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 VIEWS_CONTROLS_BUTTON_BUTTON_DROPDOWN_H_
#define VIEWS_CONTROLS_BUTTON_BUTTON_DROPDOWN_H_
#include "base/task.h"
#include "views/controls/button/image_button.h"
#include "views/controls/menu/menu.h"
namespace views {
////////////////////////////////////////////////////////////////////////////////
//
// ButtonDropDown
//
// A button class that when pressed (and held) or pressed (and drag down) will
// display a menu
//
////////////////////////////////////////////////////////////////////////////////
class ButtonDropDown : public ImageButton {
public:
ButtonDropDown(ButtonListener* listener, Menu::Delegate* menu_delegate);
virtual ~ButtonDropDown();
// Accessibility accessors, overridden from View.
virtual bool GetAccessibleDefaultAction(std::wstring* action);
virtual bool GetAccessibleRole(AccessibilityTypes::Role* role);
virtual bool GetAccessibleState(AccessibilityTypes::State* state);
private:
// Overridden from Button
virtual bool OnMousePressed(const MouseEvent& e);
virtual void OnMouseReleased(const MouseEvent& e, bool canceled);
virtual bool OnMouseDragged(const MouseEvent& e);
// Overridden from View. Used to display the right-click menu, as triggered
// by the keyboard, for instance. Using the member function ShowDropDownMenu
// for the actual display.
virtual void ShowContextMenu(int x,
int y,
bool is_mouse_gesture);
// Internal function to show the dropdown menu
void ShowDropDownMenu(HWND window);
// Specifies who to delegate populating the menu
Menu::Delegate* menu_delegate_;
// Y position of mouse when left mouse button is pressed
int y_position_on_lbuttondown_;
// A factory for tasks that show the dropdown context menu for the button.
ScopedRunnableMethodFactory<ButtonDropDown> show_menu_factory_;
DISALLOW_COPY_AND_ASSIGN(ButtonDropDown);
};
} // namespace views
#endif // VIEWS_CONTROLS_BUTTON_BUTTON_DROPDOWN_H_
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