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** General Public License version 2.1 as published by the Free Software

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****************************************************************************/

#ifndef QCOLUMNVIEW_P_H

#define QCOLUMNVIEW_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of other Qt classes.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "qcolumnview.h"

#ifndef QT_NO_QCOLUMNVIEW

#include <private/qabstractitemview_p.h>

#include <QtCore/qabstractitemmodel.h>

#include <QtCore/qpropertyanimation.h>

#include <QtGui/qabstractitemdelegate.h>

#include <QtGui/qabstractitemview.h>

#include <QtGui/qitemdelegate.h>

#include <qlistview.h>

#include <qevent.h>

#include <qscrollbar.h>

QT_BEGIN_NAMESPACE

class QColumnViewPreviewColumn : public QAbstractItemView {

public:

    QColumnViewPreviewColumn(QWidget *parent) : QAbstractItemView(parent), previewWidget(0) {

    }

    void setPreviewWidget(QWidget *widget) {

        previewWidget = widget;

        setMinimumWidth(previewWidget->minimumWidth());

    }

    void resizeEvent(QResizeEvent * event){

        if (!previewWidget)

            return;

        previewWidget->resize(

                qMax(previewWidget->minimumWidth(), event->size().width()),

                previewWidget->height());

        QSize p = viewport()->size();

        QSize v = previewWidget->size();

        horizontalScrollBar()->setRange(0, v.width() - p.width());

        horizontalScrollBar()->setPageStep(p.width());

        verticalScrollBar()->setRange(0, v.height() - p.height());

        verticalScrollBar()->setPageStep(p.height());

        QAbstractScrollArea::resizeEvent(event);

    }

    QRect visualRect(const QModelIndex &) const

    {

        return QRect();

    }

    void scrollTo(const QModelIndex &, ScrollHint)

    {

    }

    QModelIndex indexAt(const QPoint &) const

    {

        return QModelIndex();

    }

    QModelIndex moveCursor(CursorAction, Qt::KeyboardModifiers)

    {

        return QModelIndex();

    }

    int horizontalOffset () const {

        return 0;

    }

    int verticalOffset () const {

        return 0;

    }

    QRegion visualRegionForSelection(const QItemSelection &) const

    {

        return QRegion();

    }

    bool isIndexHidden(const QModelIndex &) const

    {

        return false;

    }

    void setSelection(const QRect &, QItemSelectionModel::SelectionFlags)

    {

    }

private:

    QWidget *previewWidget;

};

class Q_AUTOTEST_EXPORT QColumnViewPrivate : public QAbstractItemViewPrivate

{

    Q_DECLARE_PUBLIC(QColumnView)

public:

    QColumnViewPrivate();

    ~QColumnViewPrivate();

    void initialize();

    QAbstractItemView *createColumn(const QModelIndex &index, bool show);

    void updateScrollbars();

    void closeColumns(const QModelIndex &parent = QModelIndex(), bool build = false);

    void doLayout();

    void setPreviewWidget(QWidget *widget);

    void checkColumnCreation(const QModelIndex &parent);

    void _q_gripMoved(int offset);

    void _q_changeCurrentColumn();

    void _q_clicked(const QModelIndex &index);

    void _q_columnsInserted(const QModelIndex &parent, int start, int end);

    QList<QAbstractItemView*> columns;

    QVector<int> columnSizes; // used during init and corner moving

    bool showResizeGrips;

    int offset;

#ifndef QT_NO_ANIMATION

    QPropertyAnimation currentAnimation;

#endif

    QWidget *previewWidget;

    QAbstractItemView *previewColumn;

};

/*!

 * This is a delegate that will paint the triangle

 */

class QColumnViewDelegate : public QItemDelegate

{

public:

    explicit QColumnViewDelegate(QObject *parent = 0) : QItemDelegate(parent) {}

    ~QColumnViewDelegate() {}

    void paint(QPainter *painter,

               const QStyleOptionViewItem &option,

               const QModelIndex &index) const;

};

#endif // QT_NO_QCOLUMNVIEW

QT_END_NAMESPACE

#endif //QCOLUMNVIEW_P_H