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

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** contained in the Technology Preview License Agreement accompanying

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

#ifndef COMPLEXWIDGETS_H

#define COMPLEXWIDGETS_H

#include <QtCore/qpointer.h>

#include <QtGui/qaccessiblewidget.h>

#include <QtGui/qabstractitemview.h>

#include <QtGui/qaccessible2.h>

QT_BEGIN_NAMESPACE

#ifndef QT_NO_ACCESSIBILITY

class QAbstractButton;

class QHeaderView;

class QTabBar;

class QComboBox;

class QTitleBar;

class QAbstractScrollArea;

class QScrollArea;

#ifndef QT_NO_SCROLLAREA

class QAccessibleAbstractScrollArea : public QAccessibleWidgetEx

{

public:

    explicit QAccessibleAbstractScrollArea(QWidget *widget);

    enum AbstractScrollAreaElement {

        Self = 0,

        Viewport,

        HorizontalContainer,

        VerticalContainer,

        CornerWidget,

        Undefined

    };

    QString text(Text textType, int child) const;

    void setText(Text textType, int child, const QString &text);

    State state(int child) const;

    QVariant invokeMethodEx(QAccessible::Method method, int child, const QVariantList &params);

    int childCount() const;

    int indexOfChild(const QAccessibleInterface *child) const;

    bool isValid() const;

    int navigate(RelationFlag relation, int entry, QAccessibleInterface **target) const;

    QRect rect(int child) const;

    int childAt(int x, int y) const;

//protected:

    QAbstractScrollArea *abstractScrollArea() const;

private:

    QWidgetList accessibleChildren() const;

    AbstractScrollAreaElement elementType(QWidget *widget) const;

    bool isLeftToRight() const;

};

class QAccessibleScrollArea : public QAccessibleAbstractScrollArea

{

public:

    explicit QAccessibleScrollArea(QWidget *widget);

};

#endif // QT_NO_SCROLLAREA

#ifndef QT_NO_ITEMVIEWS

class QAccessibleHeader : public QAccessibleWidgetEx

{

    Q_ACCESSIBLE_OBJECT

public:

    explicit QAccessibleHeader(QWidget *w);

    int childCount() const;

    QRect rect(int child) const;

    QString text(Text t, int child) const;

    Role role(int child) const;

    State state(int child) const;

protected:

    QHeaderView *header() const;

};

class QAccessibleItemRow: public QAccessibleInterface

{

    friend class QAccessibleItemView;

public:

    QAccessibleItemRow(QAbstractItemView *view, const QModelIndex &index = QModelIndex(), bool isHeader = false);

    QRect rect(int child) const;

    QString text(Text t, int child) const;

    void setText(Text t, int child, const QString &text);

    bool isValid() const;

    QObject *object() const;

    Role role(int child) const;

    State state(int child) const;

    int childCount() const;

    int indexOfChild(const QAccessibleInterface *) const;

    QList<QModelIndex> children() const;

    Relation relationTo(int child, const QAccessibleInterface *other, int otherChild) const;

    int childAt(int x, int y) const;

    int navigate(RelationFlag relation, int index, QAccessibleInterface **iface) const;

    int userActionCount(int child) const;

    QString actionText(int action, Text t, int child) const;

    bool doAction(int action, int child, const QVariantList &params = QVariantList());

    QModelIndex childIndex(int child) const;

    QHeaderView *horizontalHeader() const;  //used by QAccessibleItemView

private:

    static QAbstractItemView::CursorAction toCursorAction(Relation rel);

    int logicalFromChild(QHeaderView *header, int child) const;

    int treeLevel() const;

    QHeaderView *verticalHeader() const;

    QString text_helper(int child) const;

    QPersistentModelIndex row;

    QPointer<QAbstractItemView> view;

    bool m_header;

};

class QAccessibleItemView: public QAccessibleAbstractScrollArea, public QAccessibleTableInterface

{

    Q_ACCESSIBLE_OBJECT

public:

    explicit QAccessibleItemView(QWidget *w);

    QObject *object() const;

    Role role(int child) const;

    State state(int child) const;

    QRect rect(int child) const;

    int childAt(int x, int y) const;

    int childCount() const;

    QString text(Text t, int child) const;

    void setText(Text t, int child, const QString &text);

    int indexOfChild(const QAccessibleInterface *iface) const;

    QModelIndex childIndex(int child) const;

    int entryFromIndex(const QModelIndex &index) const;

    bool isValid() const;

    int navigate(RelationFlag relation, int index, QAccessibleInterface **iface) const;

    QAccessibleInterface *accessibleAt(int row, int column);

    QAccessibleInterface *caption();

    int childIndex(int rowIndex, int columnIndex);

    QString columnDescription(int column);

    int columnSpan(int row, int column);

    QAccessibleInterface *columnHeader();

    int columnIndex(int childIndex);

    int columnCount();

    int rowCount();

    int selectedColumnCount();

    int selectedRowCount();

    QString rowDescription(int row);

    int rowSpan(int row, int column);

    QAccessibleInterface *rowHeader();

    int rowIndex(int childIndex);

    int selectedRows(int maxRows, QList<int> *rows);

    int selectedColumns(int maxColumns, QList<int> *columns);

    QAccessibleInterface *summary();

    bool isColumnSelected(int column);

    bool isRowSelected(int row);

    bool isSelected(int row, int column);

    void selectRow(int row);

    void selectColumn(int column);

    void unselectRow(int row);

    void unselectColumn(int column);

    void cellAtIndex(int index, int *row, int *column, int *rowSpan,

                     int *columnSpan, bool *isSelected);

    QHeaderView *horizontalHeader() const;

    QHeaderView *verticalHeader() const;

    bool isValidChildRole(QAccessible::Role role) const;

protected:

    QAbstractItemView *itemView() const;

    QModelIndex index(int row, int column) const;

private:

    inline bool atViewport() const {

        return atVP;

    };

    QAccessible::Role expectedRoleOfChildren() const;

    bool atVP;

};

#endif

#ifndef QT_NO_TABBAR

class QAccessibleTabBar : public QAccessibleWidgetEx

{

    Q_ACCESSIBLE_OBJECT

public:

    explicit QAccessibleTabBar(QWidget *w);

    int childCount() const;

    QRect rect(int child) const;

    QString text(Text t, int child) const;

    Role role(int child) const;

    State state(int child) const;

    bool doAction(int action, int child, const QVariantList &params);

    bool setSelected(int child, bool on, bool extend);

    QVector<int> selection() const;

protected:

    QTabBar *tabBar() const;

private:

    QAbstractButton *button(int child) const;

};

#endif // QT_NO_TABBAR

#ifndef QT_NO_COMBOBOX

class QAccessibleComboBox : public QAccessibleWidgetEx

{

    Q_ACCESSIBLE_OBJECT

public:

    explicit QAccessibleComboBox(QWidget *w);

    enum ComboBoxElements {

        ComboBoxSelf        = 0,

        CurrentText,

        OpenList,

        PopupList

    };

    int childCount() const;

    int childAt(int x, int y) const;

    int indexOfChild(const QAccessibleInterface *child) const;

    int navigate(RelationFlag rel, int entry, QAccessibleInterface **target) const;

    QString text(Text t, int child) const;

    QRect rect(int child) const;

    Role role(int child) const;

    State state(int child) const;

    bool doAction(int action, int child, const QVariantList &params);

    QString actionText(int action, Text t, int child) const;

protected:

    QComboBox *comboBox() const;

};

#endif // QT_NO_COMBOBOX

#endif // QT_NO_ACCESSIBILITY

QT_END_NAMESPACE

#endif // COMPLEXWIDGETS_H