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

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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the QtGui module of the Qt Toolkit.

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** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

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

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

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**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

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

#ifndef QTREEWIDGET_H

#define QTREEWIDGET_H

#include <QtGui/qtreeview.h>

#include <QtGui/qtreewidgetitemiterator.h>

#include <QtCore/qvariant.h>

#include <QtCore/qvector.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

#ifndef QT_NO_TREEWIDGET

class QTreeWidget;

class QTreeModel;

class QWidgetItemData;

class QTreeWidgetItemPrivate;

class Q_GUI_EXPORT QTreeWidgetItem

{

    friend class QTreeModel;

    friend class QTreeWidget;

    friend class QTreeWidgetPrivate;

    friend class QTreeWidgetItemIterator;

    friend class QTreeWidgetItemPrivate;

public:

    enum ItemType { Type = 0, UserType = 1000 };

    explicit QTreeWidgetItem(int type = Type);

    QTreeWidgetItem(const QStringList &strings, int type = Type);

    explicit QTreeWidgetItem(QTreeWidget *view, int type = Type);

    QTreeWidgetItem(QTreeWidget *view, const QStringList &strings, int type = Type);

    QTreeWidgetItem(QTreeWidget *view, QTreeWidgetItem *after, int type = Type);

    explicit QTreeWidgetItem(QTreeWidgetItem *parent, int type = Type);

    QTreeWidgetItem(QTreeWidgetItem *parent, const QStringList &strings, int type = Type);

    QTreeWidgetItem(QTreeWidgetItem *parent, QTreeWidgetItem *after, int type = Type);

    QTreeWidgetItem(const QTreeWidgetItem &other);

    virtual ~QTreeWidgetItem();

    virtual QTreeWidgetItem *clone() const;

    inline QTreeWidget *treeWidget() const { return view; }

    inline void setSelected(bool select);

    inline bool isSelected() const;

    inline void setHidden(bool hide);

    inline bool isHidden() const;

    inline void setExpanded(bool expand);

    inline bool isExpanded() const;

    inline void setFirstColumnSpanned(bool span);

    inline bool isFirstColumnSpanned() const;

    inline void setDisabled(bool disabled);

    inline bool isDisabled() const;

    enum ChildIndicatorPolicy { ShowIndicator, DontShowIndicator, DontShowIndicatorWhenChildless };

    void setChildIndicatorPolicy(QTreeWidgetItem::ChildIndicatorPolicy policy);

    QTreeWidgetItem::ChildIndicatorPolicy childIndicatorPolicy() const;

    Qt::ItemFlags flags() const;

    void setFlags(Qt::ItemFlags flags);

    inline QString text(int column) const

        { return data(column, Qt::DisplayRole).toString(); }

    inline void setText(int column, const QString &text);

    inline QIcon icon(int column) const

        { return qvariant_cast<QIcon>(data(column, Qt::DecorationRole)); }

    inline void setIcon(int column, const QIcon &icon);

    inline QString statusTip(int column) const

        { return data(column, Qt::StatusTipRole).toString(); }

    inline void setStatusTip(int column, const QString &statusTip);

#ifndef QT_NO_TOOLTIP

    inline QString toolTip(int column) const

        { return data(column, Qt::ToolTipRole).toString(); }

    inline void setToolTip(int column, const QString &toolTip);

#endif

#ifndef QT_NO_WHATSTHIS

    inline QString whatsThis(int column) const

        { return data(column, Qt::WhatsThisRole).toString(); }

    inline void setWhatsThis(int column, const QString &whatsThis);

#endif

    inline QFont font(int column) const

        { return qvariant_cast<QFont>(data(column, Qt::FontRole)); }

    inline void setFont(int column, const QFont &font);

    inline int textAlignment(int column) const

        { return data(column, Qt::TextAlignmentRole).toInt(); }

    inline void setTextAlignment(int column, int alignment)

        { setData(column, Qt::TextAlignmentRole, alignment); }

    inline QColor backgroundColor(int column) const

        { return qvariant_cast<QColor>(data(column, Qt::BackgroundColorRole)); }

    inline void setBackgroundColor(int column, const QColor &color)

        { setData(column, Qt::BackgroundColorRole, color); }

    inline QBrush background(int column) const

        { return qvariant_cast<QBrush>(data(column, Qt::BackgroundRole)); }

    inline void setBackground(int column, const QBrush &brush)

        { setData(column, Qt::BackgroundRole, brush); }

    inline QColor textColor(int column) const

        { return qvariant_cast<QColor>(data(column, Qt::TextColorRole)); }

    inline void setTextColor(int column, const QColor &color)

        { setData(column, Qt::TextColorRole, color); }

    inline QBrush foreground(int column) const

        { return qvariant_cast<QBrush>(data(column, Qt::ForegroundRole)); }

    inline void setForeground(int column, const QBrush &brush)

        { setData(column, Qt::ForegroundRole, brush); }

    inline Qt::CheckState checkState(int column) const

        { return static_cast<Qt::CheckState>(data(column, Qt::CheckStateRole).toInt()); }

    inline void setCheckState(int column, Qt::CheckState state)

        { setData(column, Qt::CheckStateRole, state); }

    inline QSize sizeHint(int column) const

        { return qvariant_cast<QSize>(data(column, Qt::SizeHintRole)); }

    inline void setSizeHint(int column, const QSize &size)

        { setData(column, Qt::SizeHintRole, size); }

    virtual QVariant data(int column, int role) const;

    virtual void setData(int column, int role, const QVariant &value);

    virtual bool operator<(const QTreeWidgetItem &other) const;

#ifndef QT_NO_DATASTREAM

    virtual void read(QDataStream &in);

    virtual void write(QDataStream &out) const;

#endif

    QTreeWidgetItem &operator=(const QTreeWidgetItem &other);

    inline QTreeWidgetItem *parent() const { return par; }

    inline QTreeWidgetItem *child(int index) const {

        if (index < 0 || index >= children.size())

            return 0;

        executePendingSort();

        return children.at(index);

    }

    inline int childCount() const { return children.count(); }

    inline int columnCount() const { return values.count(); }

    inline int indexOfChild(QTreeWidgetItem *child) const;

    void addChild(QTreeWidgetItem *child);

    void insertChild(int index, QTreeWidgetItem *child);

    void removeChild(QTreeWidgetItem *child);

    QTreeWidgetItem *takeChild(int index);

    void addChildren(const QList<QTreeWidgetItem*> &children);

    void insertChildren(int index, const QList<QTreeWidgetItem*> &children);

    QList<QTreeWidgetItem*> takeChildren();

    inline int type() const { return rtti; }

    inline void sortChildren(int column, Qt::SortOrder order)

        { sortChildren(column, order, false); }

protected:

    void emitDataChanged();

private:

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

    QVariant childrenCheckState(int column) const;

    void itemChanged();

    void executePendingSort() const;

    int rtti;

    // One item has a vector of column entries. Each column has a vector of (role, value) pairs.

    QVector< QVector<QWidgetItemData> > values;

    QTreeWidget *view;

    QTreeWidgetItemPrivate *d;

    QTreeWidgetItem *par;

    QList<QTreeWidgetItem*> children;

    Qt::ItemFlags itemFlags;

};

inline void QTreeWidgetItem::setText(int column, const QString &atext)

{ setData(column, Qt::DisplayRole, atext); }

inline void QTreeWidgetItem::setIcon(int column, const QIcon &aicon)

{ setData(column, Qt::DecorationRole, aicon); }

#ifndef QT_NO_STATUSTIP

inline void QTreeWidgetItem::setStatusTip(int column, const QString &astatusTip)

{ setData(column, Qt::StatusTipRole, astatusTip); }

#endif

#ifndef QT_NO_TOOLTIP

inline void QTreeWidgetItem::setToolTip(int column, const QString &atoolTip)

{ setData(column, Qt::ToolTipRole, atoolTip); }

#endif

#ifndef QT_NO_WHATSTHIS

inline void QTreeWidgetItem::setWhatsThis(int column, const QString &awhatsThis)

{ setData(column, Qt::WhatsThisRole, awhatsThis); }

#endif

inline void QTreeWidgetItem::setFont(int column, const QFont &afont)

{ setData(column, Qt::FontRole, afont); }

inline int QTreeWidgetItem::indexOfChild(QTreeWidgetItem *achild) const

{ executePendingSort(); return children.indexOf(achild); }

#ifndef QT_NO_DATASTREAM

Q_GUI_EXPORT QDataStream &operator<<(QDataStream &out, const QTreeWidgetItem &item);

Q_GUI_EXPORT QDataStream &operator>>(QDataStream &in, QTreeWidgetItem &item);

#endif

class QTreeWidgetPrivate;

class Q_GUI_EXPORT QTreeWidget : public QTreeView

{

    Q_OBJECT

    Q_PROPERTY(int columnCount READ columnCount WRITE setColumnCount)

    Q_PROPERTY(int topLevelItemCount READ topLevelItemCount)

    friend class QTreeModel;

    friend class QTreeWidgetItem;

public:

    explicit QTreeWidget(QWidget *parent = 0);

    ~QTreeWidget();

    int columnCount() const;

    void setColumnCount(int columns);

    QTreeWidgetItem *invisibleRootItem() const;

    QTreeWidgetItem *topLevelItem(int index) const;

    int topLevelItemCount() const;

    void insertTopLevelItem(int index, QTreeWidgetItem *item);

    void addTopLevelItem(QTreeWidgetItem *item);

    QTreeWidgetItem *takeTopLevelItem(int index);

    int indexOfTopLevelItem(QTreeWidgetItem *item); // ### Qt 5: remove me

    int indexOfTopLevelItem(QTreeWidgetItem *item) const;

    void insertTopLevelItems(int index, const QList<QTreeWidgetItem*> &items);

    void addTopLevelItems(const QList<QTreeWidgetItem*> &items);

    QTreeWidgetItem *headerItem() const;

    void setHeaderItem(QTreeWidgetItem *item);

    void setHeaderLabels(const QStringList &labels);

    inline void setHeaderLabel(const QString &label);

    QTreeWidgetItem *currentItem() const;

    int currentColumn() const;

    void setCurrentItem(QTreeWidgetItem *item);

    void setCurrentItem(QTreeWidgetItem *item, int column);

    void setCurrentItem(QTreeWidgetItem *item, int column, QItemSelectionModel::SelectionFlags command);

    QTreeWidgetItem *itemAt(const QPoint &p) const;

    inline QTreeWidgetItem *itemAt(int x, int y) const;

    QRect visualItemRect(const QTreeWidgetItem *item) const;

    int sortColumn() const;

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

    void setSortingEnabled(bool enable);

    bool isSortingEnabled() const;

    void editItem(QTreeWidgetItem *item, int column = 0);

    void openPersistentEditor(QTreeWidgetItem *item, int column = 0);

    void closePersistentEditor(QTreeWidgetItem *item, int column = 0);

    QWidget *itemWidget(QTreeWidgetItem *item, int column) const;

    void setItemWidget(QTreeWidgetItem *item, int column, QWidget *widget);

    inline void removeItemWidget(QTreeWidgetItem *item, int column);

    bool isItemSelected(const QTreeWidgetItem *item) const;

    void setItemSelected(const QTreeWidgetItem *item, bool select);

    QList<QTreeWidgetItem*> selectedItems() const;

    QList<QTreeWidgetItem*> findItems(const QString &text, Qt::MatchFlags flags,

                                      int column = 0) const;

    bool isItemHidden(const QTreeWidgetItem *item) const;

    void setItemHidden(const QTreeWidgetItem *item, bool hide);

    bool isItemExpanded(const QTreeWidgetItem *item) const;

    void setItemExpanded(const QTreeWidgetItem *item, bool expand);

    bool isFirstItemColumnSpanned(const QTreeWidgetItem *item) const;

    void setFirstItemColumnSpanned(const QTreeWidgetItem *item, bool span);

    QTreeWidgetItem *itemAbove(const QTreeWidgetItem *item) const;

    QTreeWidgetItem *itemBelow(const QTreeWidgetItem *item) const;

    void setSelectionModel(QItemSelectionModel *selectionModel);

public Q_SLOTS:

    void scrollToItem(const QTreeWidgetItem *item,

                      QAbstractItemView::ScrollHint hint = EnsureVisible);

    void expandItem(const QTreeWidgetItem *item);

    void collapseItem(const QTreeWidgetItem *item);

    void clear();

Q_SIGNALS:

    void itemPressed(QTreeWidgetItem *item, int column);

    void itemClicked(QTreeWidgetItem *item, int column);

    void itemDoubleClicked(QTreeWidgetItem *item, int column);

    void itemActivated(QTreeWidgetItem *item, int column);

    void itemEntered(QTreeWidgetItem *item, int column);

    void itemChanged(QTreeWidgetItem *item, int column);

    void itemExpanded(QTreeWidgetItem *item);

    void itemCollapsed(QTreeWidgetItem *item);

    void currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous);

    void itemSelectionChanged();

protected:

    bool event(QEvent *e);

    virtual QStringList mimeTypes() const;

    virtual QMimeData *mimeData(const QList<QTreeWidgetItem*> items) const;

    virtual bool dropMimeData(QTreeWidgetItem *parent, int index,

                              const QMimeData *data, Qt::DropAction action);

    virtual Qt::DropActions supportedDropActions() const;

    QList<QTreeWidgetItem*> items(const QMimeData *data) const;

    QModelIndex indexFromItem(QTreeWidgetItem *item, int column = 0) const;

    QTreeWidgetItem *itemFromIndex(const QModelIndex &index) const;

    void dropEvent(QDropEvent *event);

private:

    void setModel(QAbstractItemModel *model);

    Q_DECLARE_PRIVATE(QTreeWidget)

    Q_DISABLE_COPY(QTreeWidget)

    Q_PRIVATE_SLOT(d_func(), void _q_emitItemPressed(const QModelIndex &index))

    Q_PRIVATE_SLOT(d_func(), void _q_emitItemClicked(const QModelIndex &index))

    Q_PRIVATE_SLOT(d_func(), void _q_emitItemDoubleClicked(const QModelIndex &index))

    Q_PRIVATE_SLOT(d_func(), void _q_emitItemActivated(const QModelIndex &index))

    Q_PRIVATE_SLOT(d_func(), void _q_emitItemEntered(const QModelIndex &index))

    Q_PRIVATE_SLOT(d_func(), void _q_emitItemChanged(const QModelIndex &index))

    Q_PRIVATE_SLOT(d_func(), void _q_emitItemExpanded(const QModelIndex &index))

    Q_PRIVATE_SLOT(d_func(), void _q_emitItemCollapsed(const QModelIndex &index))

    Q_PRIVATE_SLOT(d_func(), void _q_emitCurrentItemChanged(const QModelIndex &previous, const QModelIndex &current))

    Q_PRIVATE_SLOT(d_func(), void _q_sort())

    Q_PRIVATE_SLOT(d_func(), void _q_dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight))

    Q_PRIVATE_SLOT(d_func(), void _q_selectionChanged(const QItemSelection &selected, const QItemSelection &deselected))

};

inline void QTreeWidget::removeItemWidget(QTreeWidgetItem *item, int column)

{ setItemWidget(item, column, 0); }

inline QTreeWidgetItem *QTreeWidget::itemAt(int ax, int ay) const

{ return itemAt(QPoint(ax, ay)); }

inline void QTreeWidget::setHeaderLabel(const QString &alabel)

{ setHeaderLabels(QStringList(alabel)); }

inline void QTreeWidgetItem::setSelected(bool aselect)

{ if (view) view->setItemSelected(this, aselect); }

inline bool QTreeWidgetItem::isSelected() const

{ return (view ? view->isItemSelected(this) : false); }

inline void QTreeWidgetItem::setHidden(bool ahide)

{ if (view) view->setItemHidden(this, ahide); }

inline bool QTreeWidgetItem::isHidden() const

{ return (view ? view->isItemHidden(this) : false); }

inline void QTreeWidgetItem::setExpanded(bool aexpand)

{ if (view) view->setItemExpanded(this, aexpand); }

inline bool QTreeWidgetItem::isExpanded() const

{ return (view ? view->isItemExpanded(this) : false); }

inline void QTreeWidgetItem::setFirstColumnSpanned(bool aspan)

{ if (view) view->setFirstItemColumnSpanned(this, aspan); }

inline bool QTreeWidgetItem::isFirstColumnSpanned() const

{ return (view ? view->isFirstItemColumnSpanned(this) : false); }

inline void QTreeWidgetItem::setDisabled(bool disabled)

{ setFlags(disabled ? (flags() & ~Qt::ItemIsEnabled) : flags() | Qt::ItemIsEnabled); }

inline bool QTreeWidgetItem::isDisabled() const

{ return !(flags() & Qt::ItemIsEnabled); }

#endif // QT_NO_TREEWIDGET

QT_END_NAMESPACE

QT_END_HEADER

#endif // QTREEWIDGET_H