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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 CHROME_BROWSER_UI_GTK_BACK_FORWARD_BUTTON_GTK_H_
#define CHROME_BROWSER_UI_GTK_BACK_FORWARD_BUTTON_GTK_H_
#pragma once
#include "base/scoped_ptr.h"
#include "base/task.h"
#include "chrome/browser/ui/gtk/custom_button.h"
#include "chrome/browser/ui/gtk/menu_gtk.h"
#include "ui/base/gtk/gtk_signal.h"
class BackForwardMenuModel;
class Browser;
typedef struct _GtkWidget GtkWidget;
// When clicked, these buttons will navigate forward or backward. When
// pressed and held, they show a dropdown menu of recent web sites.
class BackForwardButtonGtk : MenuGtk::Delegate {
public:
BackForwardButtonGtk(Browser* browser, bool is_forward);
virtual ~BackForwardButtonGtk();
// MenuGtk::Delegate implementation.
virtual void StoppedShowing();
virtual bool AlwaysShowIconForCmd(int command_id) const;
GtkWidget* widget() { return button_->widget(); }
private:
// Executes the browser command.
CHROMEGTK_CALLBACK_0(BackForwardButtonGtk, void, OnClick);
// Starts a timer to show the dropdown menu.
CHROMEGTK_CALLBACK_1(BackForwardButtonGtk, gboolean, OnButtonPress,
GdkEventButton*);
// If there is a timer to show the dropdown menu, and the mouse has moved
// sufficiently down the screen, cancel the timer and immediately show the
// menu.
CHROMEGTK_CALLBACK_1(BackForwardButtonGtk, gboolean, OnMouseMove,
GdkEventMotion*);
// Shows the dropdown menu.
void ShowBackForwardMenu(int button, guint32 event_time);
// The menu gets reset every time it is shown.
scoped_ptr<MenuGtk> menu_;
scoped_ptr<CustomDrawButton> button_;
// The browser to which we will send commands.
Browser* browser_;
// Whether this button is a forward button.
bool is_forward_;
// The dropdown menu model.
scoped_ptr<BackForwardMenuModel> menu_model_;
// The y position of the last mouse down event.
int y_position_of_last_press_;
ScopedRunnableMethodFactory<BackForwardButtonGtk> show_menu_factory_;
DISALLOW_COPY_AND_ASSIGN(BackForwardButtonGtk);
};
#endif // CHROME_BROWSER_UI_GTK_BACK_FORWARD_BUTTON_GTK_H_
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