WindowOnTopEnforcer.h

/***************************************************************************
 *   Copyright (C) 2010 by Daniel Calviño Sánchez <danxuliu@gmail.com>     *
 *   Copyright (C) 2012 by Daniel Calviño Sánchez <danxuliu@gmail.com>     *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; If not, see <http://www.gnu.org/licenses/>.  *
 ***************************************************************************/

#ifndef KTUTORIAL_VIEW_WINDOWONTOPENFORCER_H
#define KTUTORIAL_VIEW_WINDOWONTOPENFORCER_H

#include <QObject>
#include <QStack>

namespace ktutorial {
namespace common {
class WindowVisibilitySpy;
}
}

namespace ktutorial {
namespace view {

class WindowOnTopEnforcer: public QObject {
Q_OBJECT
public:

    explicit WindowOnTopEnforcer(QWidget* widget);

    void setBaseWindow(QWidget* baseWindow);

private:

    QWidget* mWidgetToKeepOnTop;

    QStack<QWidget*> mParentStack;

    bool isAncestorOf(QObject* object, QObject* childObject) const;

    void reparentWindowTo(QWidget* window, QWidget* parent) const;

private Q_SLOTS:

    void handleWindowShown(QWidget* window);

    void handleWindowHidden(QWidget* window);

};

}
}

#endif