cxReplacableContentWidget.h

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.
                 
Copyright (c) SINTEF Department of Medical Technology.
All rights reserved.
                 
CustusX is released under a BSD 3-Clause license.
                 
See Lisence.txt (https://github.com/SINTEFMedtek/CustusX/blob/master/License.txt) for details.
=========================================================================*/
#ifndef CXREPLACABLECONTENTWIDGET_H
#define CXREPLACABLECONTENTWIDGET_H

#include <QWidget>
#include <QVBoxLayout>
#include <boost/shared_ptr.hpp>
#include <iostream>

namespace cx
{

class ReplacableContentWidget : public QWidget
{
public:
        ReplacableContentWidget(QWidget* parent) : QWidget(parent), mWidget(NULL)
        {
                mLayout = new QVBoxLayout(this);
                mLayout->setMargin(0);
        }
        ~ReplacableContentWidget()
        {
                this->setWidget(boost::shared_ptr<QWidget>()); // Delete objects in correct order
        }

        void setWidget(boost::shared_ptr<QWidget> widget)
        {
                this->setWidgetDontDeleteOld(widget.get());
                mWidgetBoostPointer = widget;
        }
        void setWidgetDeleteOld(QWidget* widget)
        {
                QWidget* oldwidget = mWidget;
                this->setWidgetDontDeleteOld(widget);
                delete oldwidget;
        }

        QWidget* getWidget()
        {
                return mWidget;
        }

private:
        QVBoxLayout* mLayout;
        QWidget* mWidget;
        boost::shared_ptr<QWidget> mWidgetBoostPointer;

        void setWidgetDontDeleteOld(QWidget* widget)
        {
                if (mWidget)
                {
                        mLayout->takeAt(0);
                        mWidget->hide();
                        mWidget->setParent(NULL);
                }
                mWidget = widget;
                if (mWidget)
                {
                        mLayout->addWidget(mWidget);
                        mWidget->show();
                }
        }
};

}//end namespace cx

#endif // CXREPLACABLECONTENTWIDGET_H