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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
** This file is part of the QtGui module of the Qt Toolkit.
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE


//  W A R N I N G
//  -------------
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
// We mean it.

#include <QtGui/qtextdocument.h>
#include <QtGui/qtextoption.h>
#include <QtGui/qtextcursor.h>
#include <QtGui/qtextformat.h>
#include <QtGui/qtextedit.h>
#include <QtCore/qrect.h>

#ifdef QT3_SUPPORT
#include <QtGui/qtextobject.h>
#include <QtGui/qtextlayout.h>



class QStyleSheet;
class QTextDocument;
class QMenu;
class QTextControlPrivate;
class QMimeData;
class QAbstractScrollArea;
class QEvent;
class QTimerEvent;

class Q_GUI_EXPORT QTextControl : public QObject
    QDOC_PROPERTY(QTextOption::WrapMode wordWrapMode READ wordWrapMode WRITE setWordWrapMode)
    Q_PROPERTY(QString html READ toHtml WRITE setHtml NOTIFY textChanged USER true)
    Q_PROPERTY(bool overwriteMode READ overwriteMode WRITE setOverwriteMode)
    Q_PROPERTY(int tabStopWidth READ tabStopWidth WRITE setTabStopWidth)
    Q_PROPERTY(bool acceptRichText READ acceptRichText WRITE setAcceptRichText)
    Q_PROPERTY(int cursorWidth READ cursorWidth WRITE setCursorWidth)
    Q_PROPERTY(Qt::TextInteractionFlags textInteractionFlags READ textInteractionFlags WRITE setTextInteractionFlags)
    Q_PROPERTY(bool openExternalLinks READ openExternalLinks WRITE setOpenExternalLinks)
    explicit QTextControl(QObject *parent = 0);
    explicit QTextControl(const QString &text, QObject *parent = 0);
    explicit QTextControl(QTextDocument *doc, QObject *parent = 0);
    virtual ~QTextControl();

    void setDocument(QTextDocument *document);
    QTextDocument *document() const;

    void setTextCursor(const QTextCursor &cursor);
    QTextCursor textCursor() const;

    void setTextInteractionFlags(Qt::TextInteractionFlags flags);
    Qt::TextInteractionFlags textInteractionFlags() const;

    void mergeCurrentCharFormat(const QTextCharFormat &modifier);

    void setCurrentCharFormat(const QTextCharFormat &format);
    QTextCharFormat currentCharFormat() const;

    QTextOption::WrapMode wordWrapMode() const;
    void setWordWrapMode(QTextOption::WrapMode policy);

    bool find(const QString &exp, QTextDocument::FindFlags options = 0);

    inline QString toPlainText() const
    { return document()->toPlainText(); }
    inline QString toHtml() const
    { return document()->toHtml(); }

    void ensureCursorVisible();

    virtual QVariant loadResource(int type, const QUrl &name);
    QMenu *createStandardContextMenu(const QPointF &pos, QWidget *parent);

    QTextCursor cursorForPosition(const QPointF &pos) const;
    QRectF cursorRect(const QTextCursor &cursor) const;
    QRectF cursorRect() const;
    QRectF selectionRect(const QTextCursor &cursor) const;
    QRectF selectionRect() const;

    QString anchorAt(const QPointF &pos) const;
    QPointF anchorPosition(const QString &name) const;

    QString anchorAtCursor() const;

    bool overwriteMode() const;
    void setOverwriteMode(bool overwrite);

    int tabStopWidth() const;
    void setTabStopWidth(int width);

    int cursorWidth() const;
    void setCursorWidth(int width);

    bool acceptRichText() const;
    void setAcceptRichText(bool accept);

    void setExtraSelections(const QList<QTextEdit::ExtraSelection> &selections);
    QList<QTextEdit::ExtraSelection> extraSelections() const;

    void setTextWidth(qreal width);
    qreal textWidth() const;
    QSizeF size() const;

    void setOpenExternalLinks(bool open);
    bool openExternalLinks() const;

    void moveCursor(QTextCursor::MoveOperation op, QTextCursor::MoveMode mode = QTextCursor::MoveAnchor);

    bool canPaste() const;

public Q_SLOTS:
    void setPlainText(const QString &text);
    void setHtml(const QString &text);

    void cut();
    void copy();
    void paste();

    void undo();
    void redo();

    void clear();
    void selectAll();

    void insertPlainText(const QString &text);
    void insertHtml(const QString &text);

    void append(const QString &text);

    void adjustSize();

    void textChanged();
    void undoAvailable(bool b);
    void redoAvailable(bool b);
    void currentCharFormatChanged(const QTextCharFormat &format);
    void copyAvailable(bool b);
    void selectionChanged();
    void cursorPositionChanged();

    // control signals
    void updateRequest(const QRectF &rect = QRectF());
    void documentSizeChanged(const QSizeF &);
    void visibilityRequest(const QRectF &rect);
    void microFocusChanged();
    void linkActivated(const QString &link);
    void linkHovered(const QString &);

    // control properties
    QPalette palette() const;
    void setPalette(const QPalette &pal);

    virtual void processEvent(QEvent *e, const QMatrix &matrix, QWidget *contextWidget = 0);
    void processEvent(QEvent *e, const QPointF &coordinateOffset = QPointF(), QWidget *contextWidget = 0);

    // control methods
    void drawContents(QPainter *painter, const QRectF &rect = QRectF());

    void setFocus(bool focus, Qt::FocusReason = Qt::OtherFocusReason);

    virtual QVariant inputMethodQuery(Qt::InputMethodQuery property) const;

    virtual QMimeData *createMimeDataFromSelection() const;
    virtual bool canInsertFromMimeData(const QMimeData *source) const;
    virtual void insertFromMimeData(const QMimeData *source);

    bool setFocusToAnchor(const QTextCursor &newCursor);
    bool setFocusToNextOrPreviousAnchor(bool next);
    bool findNextPrevAnchor(const QTextCursor& from, bool next, QTextCursor& newAnchor);

    virtual void timerEvent(QTimerEvent *e);

    virtual bool event(QEvent *e);

    Q_PRIVATE_SLOT(d_func(), void _q_updateCurrentCharFormatAndSelection())
    Q_PRIVATE_SLOT(d_func(), void _q_emitCursorPosChanged(const QTextCursor &))
    Q_PRIVATE_SLOT(d_func(), void _q_deleteSelected())
    Q_PRIVATE_SLOT(d_func(), void _q_copyLink())



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