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

**

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

** All rights reserved.

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

**

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

**

** $QT_BEGIN_LICENSE:LGPL$

** 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.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** 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

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

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

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

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

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

#ifndef QTEXTOBJECT_H

#define QTEXTOBJECT_H

#include <QtCore/qobject.h>

#include <QtGui/qtextformat.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QTextObjectPrivate;

class QTextDocument;

class QTextDocumentPrivate;

class QTextCursor;

class QTextBlock;

class QTextFragment;

class QTextLayout;

class QTextList;

class Q_GUI_EXPORT QTextObject : public QObject

{

    Q_OBJECT

protected:

    explicit QTextObject(QTextDocument *doc);

    ~QTextObject();

    void setFormat(const QTextFormat &format);

public:

    QTextFormat format() const;

    int formatIndex() const;

    QTextDocument *document() const;

    int objectIndex() const;

    QTextDocumentPrivate *docHandle() const;

protected:

    QTextObject(QTextObjectPrivate &p, QTextDocument *doc);

private:

    Q_DECLARE_PRIVATE(QTextObject)

    Q_DISABLE_COPY(QTextObject)

    friend class QTextDocumentPrivate;

};

class QTextBlockGroupPrivate;

class Q_GUI_EXPORT QTextBlockGroup : public QTextObject

{

    Q_OBJECT

protected:

    explicit QTextBlockGroup(QTextDocument *doc);

    ~QTextBlockGroup();

    virtual void blockInserted(const QTextBlock &block);

    virtual void blockRemoved(const QTextBlock &block);

    virtual void blockFormatChanged(const QTextBlock &block);

    QList<QTextBlock> blockList() const;

protected:

    QTextBlockGroup(QTextBlockGroupPrivate &p, QTextDocument *doc);

private:

    Q_DECLARE_PRIVATE(QTextBlockGroup)

    Q_DISABLE_COPY(QTextBlockGroup)

    friend class QTextDocumentPrivate;

};

class Q_GUI_EXPORT QTextFrameLayoutData {

public:

    virtual ~QTextFrameLayoutData();

};

class QTextFramePrivate;

class Q_GUI_EXPORT QTextFrame : public QTextObject

{

    Q_OBJECT

public:

    explicit QTextFrame(QTextDocument *doc);

    ~QTextFrame();

    inline void setFrameFormat(const QTextFrameFormat &format);

    QTextFrameFormat frameFormat() const { return QTextObject::format().toFrameFormat(); }

    QTextCursor firstCursorPosition() const;

    QTextCursor lastCursorPosition() const;

    int firstPosition() const;

    int lastPosition() const;

    QTextFrameLayoutData *layoutData() const;

    void setLayoutData(QTextFrameLayoutData *data);

    QList<QTextFrame *> childFrames() const;

    QTextFrame *parentFrame() const;

    class Q_GUI_EXPORT iterator {

        QTextFrame *f;

        int b;

        int e;

        QTextFrame *cf;

        int cb;

        friend class QTextFrame;

        friend class QTextTableCell;

        friend class QTextDocumentLayoutPrivate;

        iterator(QTextFrame *frame, int block, int begin, int end);

    public:

        iterator();

        iterator(const iterator &o);

        iterator &operator=(const iterator &o);

        QTextFrame *parentFrame() const { return f; }

        QTextFrame *currentFrame() const;

        QTextBlock currentBlock() const;

        bool atEnd() const { return !cf && cb == e; }

        inline bool operator==(const iterator &o) const { return f == o.f && cf == o.cf && cb == o.cb; }

        inline bool operator!=(const iterator &o) const { return f != o.f || cf != o.cf || cb != o.cb; }

        iterator &operator++();

        inline iterator operator++(int) { iterator tmp = *this; operator++(); return tmp; }

        iterator &operator--();

        inline iterator operator--(int) { iterator tmp = *this; operator--(); return tmp; }

    };

    friend class iterator;

    // more Qt

    typedef iterator Iterator;

    iterator begin() const;

    iterator end() const;

protected:

    QTextFrame(QTextFramePrivate &p, QTextDocument *doc);

private:

    friend class QTextDocumentPrivate;

    Q_DECLARE_PRIVATE(QTextFrame)

    Q_DISABLE_COPY(QTextFrame)

};

Q_DECLARE_TYPEINFO(QTextFrame::iterator, Q_MOVABLE_TYPE);

inline void QTextFrame::setFrameFormat(const QTextFrameFormat &aformat)

{ QTextObject::setFormat(aformat); }

class Q_GUI_EXPORT QTextBlockUserData {

public:

    virtual ~QTextBlockUserData();

};

class Q_GUI_EXPORT QTextBlock

{

    friend class QSyntaxHighlighter;

public:

    inline QTextBlock(QTextDocumentPrivate *priv, int b) : p(priv), n(b) {}

    inline QTextBlock() : p(0), n(0) {}

    inline QTextBlock(const QTextBlock &o) : p(o.p), n(o.n) {}

    inline QTextBlock &operator=(const QTextBlock &o) { p = o.p; n = o.n; return *this; }

    inline bool isValid() const { return p != 0 && n != 0; }

    inline bool operator==(const QTextBlock &o) const { return p == o.p && n == o.n; }

    inline bool operator!=(const QTextBlock &o) const { return p != o.p || n != o.n; }

    inline bool operator<(const QTextBlock &o) const { return position() < o.position(); }

    int position() const;

    int length() const;

    bool contains(int position) const;

    QTextLayout *layout() const;

    void clearLayout();

    QTextBlockFormat blockFormat() const;

    int blockFormatIndex() const;

    QTextCharFormat charFormat() const;

    int charFormatIndex() const;

    QString text() const;

    const QTextDocument *document() const;

    QTextList *textList() const;

    QTextBlockUserData *userData() const;

    void setUserData(QTextBlockUserData *data);

    int userState() const;

    void setUserState(int state);

    int revision() const;

    void setRevision(int rev);

    bool isVisible() const;

    void setVisible(bool visible);

    int blockNumber() const;

    int firstLineNumber() const;

    void setLineCount(int count);

    int lineCount() const;

    class Q_GUI_EXPORT iterator {

        const QTextDocumentPrivate *p;

        int b;

        int e;

        int n;

        friend class QTextBlock;

        iterator(const QTextDocumentPrivate *priv, int begin, int end, int f) : p(priv), b(begin), e(end), n(f) {}

    public:

        iterator() : p(0), b(0), e(0), n(0) {}

        iterator(const iterator &o) : p(o.p), b(o.b), e(o.e), n(o.n) {}

        QTextFragment fragment() const;

        bool atEnd() const { return n == e; }

        inline bool operator==(const iterator &o) const { return p == o.p && n == o.n; }

        inline bool operator!=(const iterator &o) const { return p != o.p || n != o.n; }

        iterator &operator++();

        inline iterator operator++(int) { iterator tmp = *this; operator++(); return tmp; }

        iterator &operator--();

        inline iterator operator--(int) { iterator tmp = *this; operator--(); return tmp; }

    };

    // more Qt

    typedef iterator Iterator;

    iterator begin() const;

    iterator end() const;

    QTextBlock next() const;

    QTextBlock previous() const;

    inline QTextDocumentPrivate *docHandle() const { return p; }

    inline int fragmentIndex() const { return n; }

private:

    QTextDocumentPrivate *p;

    int n;

    friend class QTextDocumentPrivate;

    friend class QTextLayout;

};

Q_DECLARE_TYPEINFO(QTextBlock, Q_MOVABLE_TYPE);

Q_DECLARE_TYPEINFO(QTextBlock::iterator, Q_MOVABLE_TYPE);

class Q_GUI_EXPORT QTextFragment

{

public:

    inline QTextFragment(const QTextDocumentPrivate *priv, int f, int fe) : p(priv), n(f), ne(fe) {}

    inline QTextFragment() : p(0), n(0), ne(0) {}

    inline QTextFragment(const QTextFragment &o) : p(o.p), n(o.n), ne(o.ne) {}

    inline QTextFragment &operator=(const QTextFragment &o) { p = o.p; n = o.n; ne = o.ne; return *this; }

    inline bool isValid() const { return p && n; }

    inline bool operator==(const QTextFragment &o) const { return p == o.p && n == o.n; }

    inline bool operator!=(const QTextFragment &o) const { return p != o.p || n != o.n; }

    inline bool operator<(const QTextFragment &o) const { return position() < o.position(); }

    int position() const;

    int length() const;

    bool contains(int position) const;

    QTextCharFormat charFormat() const;

    int charFormatIndex() const;

    QString text() const;

private:

    const QTextDocumentPrivate *p;

    int n;

    int ne;

};

Q_DECLARE_TYPEINFO(QTextFragment, Q_MOVABLE_TYPE);

QT_END_NAMESPACE

QT_END_HEADER

#endif // QTEXTOBJECT_H