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

**

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

** All rights reserved.

** 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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** $QT_BEGIN_LICENSE:LGPL$

** 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.

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** $QT_END_LICENSE$

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

#ifndef QTEXTEDIT_H

#define QTEXTEDIT_H

#include <QtGui/qabstractscrollarea.h>

#include <QtGui/qtextdocument.h>

#include <QtGui/qtextoption.h>

#include <QtGui/qtextcursor.h>

#include <QtGui/qtextformat.h>

#ifndef QT_NO_TEXTEDIT

#ifdef QT3_SUPPORT

#include <QtGui/qtextobject.h>

#include <QtGui/qtextlayout.h>

#endif

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QStyleSheet;

class QTextDocument;

class QMenu;

class QTextEditPrivate;

class QMimeData;

class Q_GUI_EXPORT QTextEdit : public QAbstractScrollArea

{

    Q_OBJECT

    Q_DECLARE_PRIVATE(QTextEdit)

    Q_FLAGS(AutoFormatting)

    Q_ENUMS(LineWrapMode)

    Q_PROPERTY(AutoFormatting autoFormatting READ autoFormatting WRITE setAutoFormatting)

    Q_PROPERTY(bool tabChangesFocus READ tabChangesFocus WRITE setTabChangesFocus)

    Q_PROPERTY(QString documentTitle READ documentTitle WRITE setDocumentTitle)

    Q_PROPERTY(bool undoRedoEnabled READ isUndoRedoEnabled WRITE setUndoRedoEnabled)

    Q_PROPERTY(LineWrapMode lineWrapMode READ lineWrapMode WRITE setLineWrapMode)

    QDOC_PROPERTY(QTextOption::WrapMode wordWrapMode READ wordWrapMode WRITE setWordWrapMode)

    Q_PROPERTY(int lineWrapColumnOrWidth READ lineWrapColumnOrWidth WRITE setLineWrapColumnOrWidth)

    Q_PROPERTY(bool readOnly READ isReadOnly WRITE setReadOnly)

#ifndef QT_NO_TEXTHTMLPARSER

    Q_PROPERTY(QString html READ toHtml WRITE setHtml NOTIFY textChanged USER true)

#endif

    Q_PROPERTY(QString plainText READ toPlainText WRITE setPlainText DESIGNABLE false)

    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)

public:

    enum LineWrapMode {

        NoWrap,

        WidgetWidth,

        FixedPixelWidth,

        FixedColumnWidth

    };

    enum AutoFormattingFlag {

        AutoNone = 0,

        AutoBulletList = 0x00000001,

        AutoAll = 0xffffffff

    };

    Q_DECLARE_FLAGS(AutoFormatting, AutoFormattingFlag)

#if defined(QT3_SUPPORT)

    enum CursorAction {

        MoveBackward,

        MoveForward,

        MoveWordBackward,

        MoveWordForward,

        MoveUp,

        MoveDown,

        MoveLineStart,

        MoveLineEnd,

        MoveHome,

        MoveEnd,

        MovePageUp,

        MovePageDown

#if !defined(Q_MOC_RUN)

        ,

        MovePgUp = MovePageUp,

        MovePgDown = MovePageDown

#endif

    };

#endif

    explicit QTextEdit(QWidget *parent = 0);

    explicit QTextEdit(const QString &text, QWidget *parent = 0);

    virtual ~QTextEdit();

    void setDocument(QTextDocument *document);

    QTextDocument *document() const;

    void setTextCursor(const QTextCursor &cursor);

    QTextCursor textCursor() const;

    bool isReadOnly() const;

    void setReadOnly(bool ro);

    void setTextInteractionFlags(Qt::TextInteractionFlags flags);

    Qt::TextInteractionFlags textInteractionFlags() const;

    qreal fontPointSize() const;

    QString fontFamily() const;

    int fontWeight() const;

    bool fontUnderline() const;

    bool fontItalic() const;

    QColor textColor() const;

    QColor textBackgroundColor() const;

    QFont currentFont() const;

    Qt::Alignment alignment() const;

    void mergeCurrentCharFormat(const QTextCharFormat &modifier);

    void setCurrentCharFormat(const QTextCharFormat &format);

    QTextCharFormat currentCharFormat() const;

    AutoFormatting autoFormatting() const;

    void setAutoFormatting(AutoFormatting features);

    bool tabChangesFocus() const;

    void setTabChangesFocus(bool b);

    inline void setDocumentTitle(const QString &title)

    { document()->setMetaInformation(QTextDocument::DocumentTitle, title); }

    inline QString documentTitle() const

    { return document()->metaInformation(QTextDocument::DocumentTitle); }

    inline bool isUndoRedoEnabled() const

    { return document()->isUndoRedoEnabled(); }

    inline void setUndoRedoEnabled(bool enable)

    { document()->setUndoRedoEnabled(enable); }

    LineWrapMode lineWrapMode() const;

    void setLineWrapMode(LineWrapMode mode);

    int lineWrapColumnOrWidth() const;

    void setLineWrapColumnOrWidth(int w);

    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(); }

#ifndef QT_NO_TEXTHTMLPARSER

    inline QString toHtml() const

    { return document()->toHtml(); }

#endif

    void ensureCursorVisible();

    virtual QVariant loadResource(int type, const QUrl &name);

#ifndef QT_NO_CONTEXTMENU

    QMenu *createStandardContextMenu();

    QMenu *createStandardContextMenu(const QPoint &position);

#endif

    QTextCursor cursorForPosition(const QPoint &pos) const;

    QRect cursorRect(const QTextCursor &cursor) const;

    QRect cursorRect() const;

    QString anchorAt(const QPoint& pos) 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);

    struct ExtraSelection

    {

        QTextCursor cursor;

        QTextCharFormat format;

    };

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

    QList<ExtraSelection> extraSelections() const;

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

    bool canPaste() const;

#ifndef QT_NO_PRINTER

    void print(QPrinter *printer) const;

#endif

public Q_SLOTS:

    void setFontPointSize(qreal s);

    void setFontFamily(const QString &fontFamily);

    void setFontWeight(int w);

    void setFontUnderline(bool b);

    void setFontItalic(bool b);

    void setTextColor(const QColor &c);

    void setTextBackgroundColor(const QColor &c);

    void setCurrentFont(const QFont &f);

    void setAlignment(Qt::Alignment a);

    void setPlainText(const QString &text);

#ifndef QT_NO_TEXTHTMLPARSER

    void setHtml(const QString &text);

#endif

    void setText(const QString &text);

#ifndef QT_NO_CLIPBOARD

    void cut();

    void copy();

    void paste();

#endif

    void undo();

    void redo();

    void clear();

    void selectAll();

    void insertPlainText(const QString &text);

#ifndef QT_NO_TEXTHTMLPARSER

    void insertHtml(const QString &text);

#endif // QT_NO_TEXTHTMLPARSER

    void append(const QString &text);

    void scrollToAnchor(const QString &name);

    void zoomIn(int range = 1);

    void zoomOut(int range = 1);

Q_SIGNALS:

    void textChanged();

    void undoAvailable(bool b);

    void redoAvailable(bool b);

    void currentCharFormatChanged(const QTextCharFormat &format);

    void copyAvailable(bool b);

    void selectionChanged();

    void cursorPositionChanged();

protected:

    virtual bool event(QEvent *e);

    virtual void timerEvent(QTimerEvent *e);

    virtual void keyPressEvent(QKeyEvent *e);

    virtual void keyReleaseEvent(QKeyEvent *e);

    virtual void resizeEvent(QResizeEvent *e);

    virtual void paintEvent(QPaintEvent *e);

    virtual void mousePressEvent(QMouseEvent *e);

    virtual void mouseMoveEvent(QMouseEvent *e);

    virtual void mouseReleaseEvent(QMouseEvent *e);

    virtual void mouseDoubleClickEvent(QMouseEvent *e);

    virtual bool focusNextPrevChild(bool next);

#ifndef QT_NO_CONTEXTMENU

    virtual void contextMenuEvent(QContextMenuEvent *e);

#endif

#ifndef QT_NO_DRAGANDDROP

    virtual void dragEnterEvent(QDragEnterEvent *e);

    virtual void dragLeaveEvent(QDragLeaveEvent *e);

    virtual void dragMoveEvent(QDragMoveEvent *e);

    virtual void dropEvent(QDropEvent *e);

#endif

    virtual void focusInEvent(QFocusEvent *e);

    virtual void focusOutEvent(QFocusEvent *e);

    virtual void showEvent(QShowEvent *);

    virtual void changeEvent(QEvent *e);

#ifndef QT_NO_WHEELEVENT

    virtual void wheelEvent(QWheelEvent *e);

#endif

    virtual QMimeData *createMimeDataFromSelection() const;

    virtual bool canInsertFromMimeData(const QMimeData *source) const;

    virtual void insertFromMimeData(const QMimeData *source);

    virtual void inputMethodEvent(QInputMethodEvent *);

    QVariant inputMethodQuery(Qt::InputMethodQuery property) const;

    QTextEdit(QTextEditPrivate &dd, QWidget *parent);

    virtual void scrollContentsBy(int dx, int dy);

#ifdef QT3_SUPPORT

Q_SIGNALS:

    QT_MOC_COMPAT void currentFontChanged(const QFont &f);

    QT_MOC_COMPAT void currentColorChanged(const QColor &c);

public:

    QT3_SUPPORT_CONSTRUCTOR QTextEdit(QWidget *parent, const char *name);

    inline QT3_SUPPORT bool find(const QString &exp, bool cs, bool wo)

    {

        QTextDocument::FindFlags flags = 0;

        if (cs)

            flags |= QTextDocument::FindCaseSensitively;

        if (wo)

            flags |= QTextDocument::FindWholeWords;

        return find(exp, flags);

    }

    inline QT3_SUPPORT void sync() {}

    QT3_SUPPORT void moveCursor(CursorAction action, QTextCursor::MoveMode mode = QTextCursor::MoveAnchor);

    QT3_SUPPORT void moveCursor(CursorAction action, bool select);

    enum KeyboardAction {

        ActionBackspace,

        ActionDelete,

        ActionReturn,

        ActionKill,

        ActionWordBackspace,

        ActionWordDelete

    };

    QT3_SUPPORT void doKeyboardAction(KeyboardAction action);

    QT3_SUPPORT QString text() const;

    QT3_SUPPORT void setTextFormat(Qt::TextFormat);

    QT3_SUPPORT Qt::TextFormat textFormat() const;

    inline QT3_SUPPORT void setBold(bool b) { setFontWeight(b ? QFont::Bold : QFont::Normal); }

    inline QT3_SUPPORT void setUnderline(bool b) { setFontUnderline(b); }

    inline QT3_SUPPORT void setItalic(bool i) { setFontItalic(i); }

    inline QT3_SUPPORT void setFamily(const QString &family) { setFontFamily(family); }

    inline QT3_SUPPORT void setPointSize(int size) { setFontPointSize(size); }

    inline QT3_SUPPORT bool italic() const { return fontItalic(); }

    inline QT3_SUPPORT bool bold() const { return fontWeight() >= QFont::Bold; }

    inline QT3_SUPPORT bool underline() const { return fontUnderline(); }

    inline QT3_SUPPORT QString family() const { return fontFamily(); }

    inline QT3_SUPPORT int pointSize() const { return (int)(fontPointSize()+0.5); }

    inline QT3_SUPPORT bool hasSelectedText() const

    { return textCursor().hasSelection(); }

    inline QT3_SUPPORT QString selectedText() const

    { return textCursor().selectedText(); }

    inline QT3_SUPPORT bool isUndoAvailable() const

    { return document()->isUndoAvailable(); }

    inline QT3_SUPPORT bool isRedoAvailable() const

    { return document()->isRedoAvailable(); }

    inline QT3_SUPPORT void insert(const QString &text)

    { insertPlainText(text); }

    inline QT3_SUPPORT bool isModified() const

    { return document()->isModified(); }

    inline QT3_SUPPORT QColor color() const

    { return textColor(); }

public Q_SLOTS:

    inline QT_MOC_COMPAT void setModified(bool m = true)

    { document()->setModified(m); }

public:

    inline QT3_SUPPORT void undo() const

    { document()->undo(); }

    inline QT3_SUPPORT void redo() const

    { document()->redo(); }

public Q_SLOTS:

    inline QT_MOC_COMPAT void setColor(const QColor &c)

    { setTextColor(c); }

#endif

private:

    Q_DISABLE_COPY(QTextEdit)

    Q_PRIVATE_SLOT(d_func(), void _q_repaintContents(const QRectF &r))

    Q_PRIVATE_SLOT(d_func(), void _q_currentCharFormatChanged(const QTextCharFormat &))

    Q_PRIVATE_SLOT(d_func(), void _q_adjustScrollbars())

    Q_PRIVATE_SLOT(d_func(), void _q_ensureVisible(const QRectF &))

    friend class QTextEditControl;

    friend class QTextDocument;

    friend class QTextControl;

};

Q_DECLARE_OPERATORS_FOR_FLAGS(QTextEdit::AutoFormatting)

QT_END_NAMESPACE

QT_END_HEADER

#endif // QT_NO_TEXTEDIT

#endif // QTEXTEDIT_H