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qlineedit.h

/**********************************************************************
** $Id: qt/src/widgets/qlineedit.h   2.2.1   edited 2000-08-25 $
**
** Definition of QLineEdit widget class
**
** Created : 941011
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of the widgets module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#ifndef QLINEEDIT_H
#define QLINEEDIT_H

struct QLineEditPrivate;

class QComboBox;
class QValidator;


#ifndef QT_H
#include "qwidget.h"
#include "qstring.h"
#endif // QT_H

#ifndef QT_NO_COMPLEXWIDGETS

class Q_EXPORT QLineEdit : public QWidget
{
    Q_OBJECT
    Q_ENUMS( EchoMode )
    Q_PROPERTY( QString text READ text WRITE setText )
    Q_PROPERTY( int maxLength READ maxLength WRITE setMaxLength )
    Q_PROPERTY( bool frame READ frame WRITE setFrame )
    Q_PROPERTY( EchoMode echoMode READ echoMode WRITE setEchoMode )
    Q_PROPERTY( QString displayText READ displayText )
    Q_PROPERTY( int cursorPosition READ cursorPosition WRITE setCursorPosition )
    Q_PROPERTY( Alignment alignment READ alignment WRITE setAlignment )
    Q_PROPERTY( bool edited READ edited WRITE setEdited )
    Q_PROPERTY( bool hasMarkedText READ hasMarkedText )
    Q_PROPERTY( QString markedText READ markedText )
        
public:
    QLineEdit( QWidget *parent, const char *name=0 );
    QLineEdit( const QString &, QWidget *parent, const char *name=0 );
   ~QLineEdit();

    QString text() const;

    QString displayText() const;

    int         maxLength()     const;
    virtual void setMaxLength( int );

    virtual void setFrame( bool );
    bool        frame() const;

    enum        EchoMode { Normal, NoEcho, Password };
    virtual void setEchoMode( EchoMode );
    EchoMode    echoMode() const;
#if QT_VERSION >= 300
#error "Make setReadOnly virtual"
#endif
    void setReadOnly( bool );
    bool isReadOnly() const;

    virtual void setValidator( const QValidator * );
    const QValidator * validator() const;

    QSize       sizeHint() const;
    QSize       minimumSizeHint() const;
    QSizePolicy sizePolicy() const;

    virtual void setEnabled( bool );
    virtual void setFont( const QFont & );
    virtual void setPalette( const QPalette & );
    virtual void setSelection( int, int );

    virtual void setCursorPosition( int );
    int         cursorPosition() const;

    bool        validateAndSet( const QString &, int, int, int );

#ifndef QT_NO_CLIPBOARD
    void        cut();
    void        copy() const;
    void        paste();
#endif

    void setAlignment( int flag );
    int alignment() const;

    void        cursorLeft( bool mark, int steps = 1 );
    void        cursorRight( bool mark, int steps = 1 );
    void        cursorWordForward( bool mark );
    void        cursorWordBackward( bool mark );
    void        backspace();
    void        del();
    void        home( bool mark );
    void        end( bool mark );

    void        setEdited( bool );
    bool        edited() const;

    bool        hasMarkedText() const;
    QString     markedText() const;

public slots:
    virtual void setText( const QString &);

    void        selectAll();
    void        deselect();

    void        clearValidator();

    void        insert( const QString &);

    void        clear();

signals:
    void        textChanged( const QString &);
    void        returnPressed();

protected:
    bool        event( QEvent * );
    void        mousePressEvent( QMouseEvent * );
    void        mouseMoveEvent( QMouseEvent * );
    void        mouseReleaseEvent( QMouseEvent * );
    void        mouseDoubleClickEvent( QMouseEvent * );
    void        keyPressEvent( QKeyEvent * );
    void        focusInEvent( QFocusEvent * );
    void        focusOutEvent( QFocusEvent * );
    void        paintEvent( QPaintEvent * );
    void        resizeEvent( QResizeEvent * );
    void        leaveEvent( QEvent * );
#ifndef QT_NO_DRAGANDDROP
    void        dragEnterEvent( QDragEnterEvent * );
    void        dropEvent( QDropEvent * );
#endif

    void        repaintArea( int, int );

private slots:
    void        clipboardChanged();
    void        blinkSlot();
    void        dragScrollSlot();
#ifndef QT_NO_DRAGANDDROP
    void        doDrag();
#endif

private:
    // kept
    void        newMark( int pos, bool copy=TRUE );
    void        markWord( int pos );
    int         lastCharVisible() const;
    int         minMark() const;
    int         maxMark() const;

    void        init();

    QString     tbuf;
    QLineEditPrivate * d;
    int         cursorPos;
    int         offset;
    int         maxLen;
    int         markAnchor;
    int         markDrag;
    bool        cursorOn;
    bool        dragScrolling;
    bool        scrollingLeft;
    int         alignmentFlag;
    bool        ed;

    void updateOffset();
    int xPosToCursorPos( int ) const;
    void blinkOn();
    void makePixmap() const;
    void undoInternal();
    void redoInternal();

private:        // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
    QLineEdit( const QLineEdit & );
    QLineEdit &operator=( const QLineEdit & );
#endif
};


#endif // QT_NO_COMPLEXWIDGETS

#endif // QLINEEDIT_H