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

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** Copyright (C) 2010 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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** GNU Lesser General Public License Usage

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

#ifndef QACCESSIBLE2_H

#define QACCESSIBLE2_H

#include <QtGui/qaccessible.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

#ifndef QT_NO_ACCESSIBILITY

namespace QAccessible2

{

    enum CoordinateType

    {

        RelativeToScreen = 0,

        RelativeToParent = 1

    };

    enum BoundaryType {

        CharBoundary,

        WordBoundary,

        SentenceBoundary,

        ParagraphBoundary,

        LineBoundary,

        NoBoundary

    };

}

class Q_GUI_EXPORT QAccessible2Interface

{

public:

    virtual ~QAccessible2Interface() {}

};

// catch-all functions. If an accessible class doesn't implement interface T, return 0

inline QAccessible2Interface *qAccessibleValueCastHelper() { return 0; }

inline QAccessible2Interface *qAccessibleTextCastHelper() { return 0; }

inline QAccessible2Interface *qAccessibleEditableTextCastHelper() { return 0; }

inline QAccessible2Interface *qAccessibleTableCastHelper() { return 0; }

inline QAccessible2Interface *qAccessibleActionCastHelper() { return 0; }

inline QAccessible2Interface *qAccessibleImageCastHelper() { return 0; }

#define Q_ACCESSIBLE_OBJECT \

    public: \

    QAccessible2Interface *interface_cast(QAccessible2::InterfaceType t) \

    { \

        switch (t) { \

        case QAccessible2::TextInterface: \

            return qAccessibleTextCastHelper(); \

        case QAccessible2::EditableTextInterface: \

            return qAccessibleEditableTextCastHelper(); \

        case QAccessible2::ValueInterface: \

            return qAccessibleValueCastHelper(); \

        case QAccessible2::TableInterface: \

            return qAccessibleTableCastHelper(); \

        case QAccessible2::ActionInterface: \

            return qAccessibleActionCastHelper(); \

        case QAccessible2::ImageInterface: \

            return qAccessibleImageCastHelper(); \

        } \

        return 0; \

    } \

    private:

class Q_GUI_EXPORT QAccessibleTextInterface: public QAccessible2Interface

{

public:

    inline QAccessible2Interface *qAccessibleTextCastHelper() { return this; }

    virtual ~QAccessibleTextInterface() {}

    virtual void addSelection(int startOffset, int endOffset) = 0;

    virtual QString attributes(int offset, int *startOffset, int *endOffset) = 0;

    virtual int cursorPosition() = 0;

    virtual QRect characterRect(int offset, QAccessible2::CoordinateType coordType) = 0;

    virtual int selectionCount() = 0;

    virtual int offsetAtPoint(const QPoint &point, QAccessible2::CoordinateType coordType) = 0;

    virtual void selection(int selectionIndex, int *startOffset, int *endOffset) = 0;

    virtual QString text(int startOffset, int endOffset) = 0;

    virtual QString textBeforeOffset (int offset, QAccessible2::BoundaryType boundaryType,

                              int *startOffset, int *endOffset) = 0;

    virtual QString textAfterOffset(int offset, QAccessible2::BoundaryType boundaryType,

                            int *startOffset, int *endOffset) = 0;

    virtual QString textAtOffset(int offset, QAccessible2::BoundaryType boundaryType,

                         int *startOffset, int *endOffset) = 0;

    virtual void removeSelection(int selectionIndex) = 0;

    virtual void setCursorPosition(int position) = 0;

    virtual void setSelection(int selectionIndex, int startOffset, int endOffset) = 0;

    virtual int characterCount() = 0;

    virtual void scrollToSubstring(int startIndex, int endIndex) = 0;

};

class Q_GUI_EXPORT QAccessibleEditableTextInterface: public QAccessible2Interface

{

public:

    inline QAccessible2Interface *qAccessibleEditableTextCastHelper() { return this; }

    virtual ~QAccessibleEditableTextInterface() {}

    virtual void copyText(int startOffset, int endOffset) = 0;

    virtual void deleteText(int startOffset, int endOffset) = 0;

    virtual void insertText(int offset, const QString &text) = 0;

    virtual void cutText(int startOffset, int endOffset) = 0;

    virtual void pasteText(int offset) = 0;

    virtual void replaceText(int startOffset, int endOffset, const QString &text) = 0;

    virtual void setAttributes(int startOffset, int endOffset, const QString &attributes) = 0;

};

class Q_GUI_EXPORT QAccessibleSimpleEditableTextInterface: public QAccessibleEditableTextInterface

{

public:

    QAccessibleSimpleEditableTextInterface(QAccessibleInterface *accessibleInterface);

    void copyText(int startOffset, int endOffset);

    void deleteText(int startOffset, int endOffset);

    void insertText(int offset, const QString &text);

    void cutText(int startOffset, int endOffset);

    void pasteText(int offset);

    void replaceText(int startOffset, int endOffset, const QString &text);

    inline void setAttributes(int, int, const QString &) {}

private:

    QAccessibleInterface *iface;

};

class Q_GUI_EXPORT QAccessibleValueInterface: public QAccessible2Interface

{

public:

    inline QAccessible2Interface *qAccessibleValueCastHelper() { return this; }

    virtual ~QAccessibleValueInterface() {}

    virtual QVariant currentValue() = 0;

    virtual void setCurrentValue(const QVariant &value) = 0;

    virtual QVariant maximumValue() = 0;

    virtual QVariant minimumValue() = 0;

};

class Q_GUI_EXPORT QAccessibleTableInterface: public QAccessible2Interface

{

public:

    inline QAccessible2Interface *qAccessibleTableCastHelper() { return this; }

    virtual QAccessibleInterface *accessibleAt(int row, int column) = 0;

    virtual QAccessibleInterface *caption() = 0;

    virtual int childIndex(int rowIndex, int columnIndex) = 0;

    virtual QString columnDescription(int column) = 0;

    virtual int columnSpan(int row, int column) = 0;

    virtual QAccessibleInterface *columnHeader() = 0;

    virtual int columnIndex(int childIndex) = 0;

    virtual int columnCount() = 0;

    virtual int rowCount() = 0;

    virtual int selectedColumnCount() = 0;

    virtual int selectedRowCount() = 0;

    virtual QString rowDescription(int row) = 0;

    virtual int rowSpan(int row, int column) = 0;

    virtual QAccessibleInterface *rowHeader() = 0;

    virtual int rowIndex(int childIndex) = 0;

    virtual int selectedRows(int maxRows, QList<int> *rows) = 0;

    virtual int selectedColumns(int maxColumns, QList<int> *columns) = 0;

    virtual QAccessibleInterface *summary() = 0;

    virtual bool isColumnSelected(int column) = 0;

    virtual bool isRowSelected(int row) = 0;

    virtual bool isSelected(int row, int column) = 0;

    virtual void selectRow(int row) = 0;

    virtual void selectColumn(int column) = 0;

    virtual void unselectRow(int row) = 0;

    virtual void unselectColumn(int column) = 0;

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

                             int *columnSpan, bool *isSelected) = 0;

};

class Q_GUI_EXPORT QAccessibleActionInterface : public QAccessible2Interface

{

public:

    inline QAccessible2Interface *qAccessibleActionCastHelper() { return this; }

    virtual int actionCount() = 0;

    virtual void doAction(int actionIndex) = 0;

    virtual QString description(int actionIndex) = 0;

    virtual QString name(int actionIndex) = 0;

    virtual QString localizedName(int actionIndex) = 0;

    virtual QStringList keyBindings(int actionIndex) = 0;

};

class Q_GUI_EXPORT QAccessibleImageInterface : public QAccessible2Interface

{

public:

    inline QAccessible2Interface *qAccessibleImageCastHelper() { return this; }

    virtual QString imageDescription() = 0;

    virtual QSize imageSize() = 0;

    virtual QRect imagePosition(QAccessible2::CoordinateType coordType) = 0;

};

#endif // QT_NO_ACCESSIBILITY

QT_END_NAMESPACE

QT_END_HEADER

#endif