/*  This file is part of the KDE project
    Copyright (C) 2002 Matthias Hölzer-Klüpfel <mhk@kde.org>

    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 __K_ACCELMANAGER_H__
#define __K_ACCELMANAGER_H__


class QWidget;
class QString;

#include <kdelibs_export.h>

/**
 * KDE Accelerator manager.
 *
 * This class can be used to find a valid and working set of
 * accelerators for any widget.
 *
 * @author Matthias Hölzer-Klüpfel <mhk@kde.org>
 * @since 3.1
*/

class KDECORE_EXPORT KAcceleratorManager
{
public:

    /**
     * Manages the accelerators of a widget.
     *
     * Call this function on the top widget of the hierarchy you
     * want to manage. It will fix the accelerators of the child widgets so
     * there are never duplicate accelerators. It also tries to put
     * accelerators on as many widgets as possible.
     *
     * The algorithm used tries to take the existing accelerators into
     * account, as well as the class of each widget. Hopefully, the result
     * is close to what you would assign manually.
     *
     * QPopupMenu's are managed dynamically, so when you add or remove entries,
     * the accelerators are reassigned. If you add or remove widgets to your
     * toplevel widget, you will have to call manage again to fix the
     * accelerators.
     *
     * @param widget The toplevel widget you want to manage.
     */

    static void manage(QWidget *widget);

    /**
     * Does the same as the above function, but puts hints in the GUI so the
     * programmer can enhance his program.
     *
     * TODO KDE4: merge with the above
     * @param widget The toplevel widget you want to manage.
     * @param programmers_mode if true, KAcceleratorManager adds (&) for removed
     *             accels and & before added accels
     */
    static void manage(QWidget *widget, bool programmers_mode);

    /** \internal returns the result of the last manage operation. */
    static void last_manage(QString &added,  QString &changed,  QString &removed);

    /**
     * Use this method for a widget (and it's children) you want no accels to be set on.
     * @since 3.4
     */
    static void setNoAccel( QWidget *widget );
};


#endif
