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#ifndef QTREEWIDGET_P_H

#define QTREEWIDGET_P_H

//

//  W A R N I N G

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

//

// This file is not part of the Qt API. This header file may change

// from version to version without notice, or even be removed.

//

// We mean it.

//

#include <QtCore/qabstractitemmodel.h>

#include <private/qabstractitemmodel_p.h>

#include <QtCore/qpair.h>

#include <QtCore/qbasictimer.h>

#include <QtGui/qtreewidget.h>

#include <private/qtreeview_p.h>

#include <QtGui/qheaderview.h>

#ifndef QT_NO_TREEWIDGET

QT_BEGIN_NAMESPACE

class QTreeWidgetItem;

class QTreeWidgetItemIterator;

class QTreeModelPrivate;

class QTreeModel : public QAbstractItemModel

{

    Q_OBJECT

    friend class QTreeWidget;

    friend class QTreeWidgetPrivate;

    friend class QTreeWidgetItem;

    friend class QTreeWidgetItemPrivate;

    friend class QTreeWidgetItemIterator;

    friend class QTreeWidgetItemIteratorPrivate;

public:

    explicit QTreeModel(int columns = 0, QTreeWidget *parent = 0);

    ~QTreeModel();

    inline QTreeWidget *view() const

        { return qobject_cast<QTreeWidget*>(QObject::parent()); }

    void clear();

    void setColumnCount(int columns);

    QTreeWidgetItem *item(const QModelIndex &index) const;

    void itemChanged(QTreeWidgetItem *item);

    QModelIndex index(const QTreeWidgetItem *item, int column) const;

    QModelIndex index(int row, int column, const QModelIndex &parent) const;

    QModelIndex parent(const QModelIndex &child) const;

    int rowCount(const QModelIndex &parent) const;

    int columnCount(const QModelIndex &parent = QModelIndex()) const;

    bool hasChildren(const QModelIndex &parent) const;

    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;

    bool setData(const QModelIndex &index, const QVariant &value, int role);

    QMap<int, QVariant> itemData(const QModelIndex &index) const;

    QVariant headerData(int section, Qt::Orientation orientation, int role) const;

    bool setHeaderData(int section, Qt::Orientation orientation, const QVariant &value,

                       int role);

    Qt::ItemFlags flags(const QModelIndex &index) const;

    void sort(int column, Qt::SortOrder order);

    void ensureSorted(int column, Qt::SortOrder order,

                      int start, int end, const QModelIndex &parent);

    static bool itemLessThan(const QPair<QTreeWidgetItem*,int> &left,

                             const QPair<QTreeWidgetItem*,int> &right);

    static bool itemGreaterThan(const QPair<QTreeWidgetItem*,int> &left,

                                const QPair<QTreeWidgetItem*,int> &right);

    static QList<QTreeWidgetItem*>::iterator sortedInsertionIterator(

        const QList<QTreeWidgetItem*>::iterator &begin,

        const QList<QTreeWidgetItem*>::iterator &end,

        Qt::SortOrder order, QTreeWidgetItem *item);

    bool insertRows(int row, int count, const QModelIndex &);

    bool insertColumns(int column, int count, const QModelIndex &);

    bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex());

    // dnd

    QStringList mimeTypes() const;

    QMimeData *mimeData(const QModelIndexList &indexes) const;

    bool dropMimeData(const QMimeData *data, Qt::DropAction action,

                      int row, int column, const QModelIndex &parent);

    Qt::DropActions supportedDropActions() const;

    QMimeData *internalMimeData() const;

    inline QModelIndex createIndexFromItem(int row, int col, QTreeWidgetItem *item) const

    { return createIndex(row, col, item); }

protected:

    QTreeModel(QTreeModelPrivate &, QTreeWidget *parent = 0);

    void emitDataChanged(QTreeWidgetItem *item, int column);

    void beginInsertItems(QTreeWidgetItem *parent, int row, int count);

    void endInsertItems();

    void beginRemoveItems(QTreeWidgetItem *parent, int row, int count);

    void endRemoveItems();

    void sortItems(QList<QTreeWidgetItem*> *items, int column, Qt::SortOrder order);

    void timerEvent(QTimerEvent *);

private:

    QTreeWidgetItem *rootItem;

    QTreeWidgetItem *headerItem;

    mutable QModelIndexList cachedIndexes;

    QList<QTreeWidgetItemIterator*> iterators;

    mutable QBasicTimer sortPendingTimer;

    mutable bool skipPendingSort; //while doing internal operation we don't care about sorting

    bool inline executePendingSort() const;

    bool isChanging() const;

private:

    Q_DECLARE_PRIVATE(QTreeModel)

public:

    struct SkipSorting

    {

        const QTreeModel * const model;

        const bool previous;

        SkipSorting(const QTreeModel *m) : model(m), previous(model->skipPendingSort)

        { model->skipPendingSort = true; }

        ~SkipSorting() { model->skipPendingSort = previous; }

    };

    friend struct SkipSorting;

};

QT_BEGIN_INCLUDE_NAMESPACE

#include "private/qabstractitemmodel_p.h"

QT_END_INCLUDE_NAMESPACE

class QTreeModelPrivate : public QAbstractItemModelPrivate

{

    Q_DECLARE_PUBLIC(QTreeModel)

};

class QTreeWidgetItemPrivate

{

public:

    QTreeWidgetItemPrivate(QTreeWidgetItem *item)

        : q(item), disabled(false), selected(false), rowGuess(-1), policy(QTreeWidgetItem::DontShowIndicatorWhenChildless) {}

    void propagateDisabled(QTreeWidgetItem *item);

    void sortChildren(int column, Qt::SortOrder order, bool climb);

    QTreeWidgetItem *q;

    QVariantList display;

    uint disabled : 1;

    uint selected : 1;

    int rowGuess;

    QTreeWidgetItem::ChildIndicatorPolicy policy;

};

inline bool QTreeModel::executePendingSort() const

{

    if (!skipPendingSort && sortPendingTimer.isActive() && !isChanging()) {

        sortPendingTimer.stop();

        int column = view()->header()->sortIndicatorSection();

        Qt::SortOrder order = view()->header()->sortIndicatorOrder();

        QTreeModel *that = const_cast<QTreeModel*>(this);

        that->sort(column, order);

        return true;

    }

    return false;

}

class QTreeWidgetPrivate : public QTreeViewPrivate

{

    friend class QTreeModel;

    Q_DECLARE_PUBLIC(QTreeWidget)

public:

    QTreeWidgetPrivate() : QTreeViewPrivate(), explicitSortColumn(-1) {}

    inline QTreeModel *treeModel() const { return qobject_cast<QTreeModel*>(model); }

    inline QModelIndex index(const QTreeWidgetItem *item, int column = 0) const

        { return treeModel()->index(item, column); }

    inline QTreeWidgetItem *item(const QModelIndex &index) const

        { return treeModel()->item(index); }

    void _q_emitItemPressed(const QModelIndex &index);

    void _q_emitItemClicked(const QModelIndex &index);

    void _q_emitItemDoubleClicked(const QModelIndex &index);

    void _q_emitItemActivated(const QModelIndex &index);

    void _q_emitItemEntered(const QModelIndex &index);

    void _q_emitItemChanged(const QModelIndex &index);

    void _q_emitItemExpanded(const QModelIndex &index);

    void _q_emitItemCollapsed(const QModelIndex &index);

    void _q_emitCurrentItemChanged(const QModelIndex &previous, const QModelIndex &index);

    void _q_sort();

    void _q_dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);

    void _q_selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);

     // used by QTreeWidgetItem::sortChildren to make sure the column argument is used

    int explicitSortColumn;

};

QT_END_NAMESPACE

#endif // QT_NO_TREEWIDGET

#endif // QTREEWIDGET_P_H