/***************************************************************************
 *   Copyright (c) 2005 Werner Mayer <wmayer[at]users.sourceforge.net>     *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 of the License, or (at your option) any later version.      *
 *                                                                         *
 *   This library  is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/

#ifndef GUI_MENUMANAGER_H
#define GUI_MENUMANAGER_H

#include <string>
#include <QList>
#include <QString>
#include <FCGlobal.h>


class QAction;
class QMenu;

namespace Gui {

class MainWindow;

class GuiExport MenuItem
{
public:
    MenuItem();
    explicit MenuItem(MenuItem*);
    ~MenuItem();

    void setCommand(const std::string&);
    std::string command() const;

    bool hasItems() const;
    MenuItem* findItem(const std::string&);
    MenuItem* findParentOf(const std::string&);
    MenuItem* copy() const;
    uint count() const;

    void appendItem(MenuItem*);
    bool insertItem(MenuItem*, MenuItem*);
    MenuItem* afterItem(MenuItem*) const;
    void removeItem(MenuItem*);
    void clear();

    MenuItem& operator << (MenuItem* item);
    MenuItem& operator << (const std::string& command);
    QList<MenuItem*> getItems() const;

private:
    std::string _name;
    QList<MenuItem*> _items;
};

/**
 * The MenuManager class is responsible for the creation of menus and context menus and appending them
 * to the main window.
 * @see ToolBoxManager
 * @see ToolBarManager
 * @author Werner Mayer
 */
class GuiExport MenuManager
{
public:
    /** Sets up the menus of a given workbench. */
    void setup(MenuItem*) const;
    /// sets up a context menu out of item
    void setupContextMenu(MenuItem* item, QMenu &menu) const;
    void retranslate() const;

    /// The one and only instance.
    static MenuManager* getInstance();
    static void destruct();

protected:
    MenuManager();
    ~MenuManager();

private:
    void setup(MenuItem*, QMenu*) const;
    void retranslate(QMenu*) const;
    QAction* findAction(const QList<QAction*>&, const QString&) const;
    QList<QAction*> findActions(const QList<QAction*>&, const QString&) const;

private:
    static MenuManager* _instance;

    friend class MainWindow;
};

} // namespace Gui


#endif // GUI_MENUMANAGER_H