/* This file is part of the KDE libraries
    Copyright (C) 2005, 2006 Ian Reinhart Geiser <geiseri@kde.org>
    Copyright (C) 2005, 2006 Matt Broadstone <mbroadst@gmail.com>
    Copyright (C) 2005, 2006 Richard J. Moore <rich@kde.org>
    Copyright (C) 2005, 2006 Erik L. Bunce <kde@bunce.us>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/

#ifndef NUMBERED_TEXT_VIEW_H
#define NUMBERED_TEXT_VIEW_H

#include <QtGui/QFrame>
#include <QtGui/QPixmap>
#include <QtGui/QTextCursor>

class QTextEdit;
class QHBoxLayout;

/**
 * @internal Used to display the numbers.
 */
class NumberBar : public QWidget
{
    Q_OBJECT

public:
    NumberBar( QWidget *parent );
    ~NumberBar();

    void setCurrentLine( int lineno );
    void setStopLine( int lineno );
    void setBugLine( int lineno );

    int currentLine() const;
    int stopLine() const;
    int bugLine() const;

    void setTextEdit( QTextEdit *edit );
    void paintEvent( QPaintEvent *ev );



protected:
    bool event( QEvent *ev );

private:
    QTextEdit *edit;
    QPixmap stopMarker;
    QPixmap currentMarker;
    QPixmap bugMarker;
    int m_stopLine;
    int m_currentLine;
    int m_bugLine;
    QRect stopRect;
    QRect currentRect;
    QRect bugRect;
};

/**
 * Displays a QTextEdit with line numbers.
 */
class NumberedTextView : public QFrame
{
    Q_OBJECT
    Q_PROPERTY( QString text READ text WRITE setText )
    Q_PROPERTY( int currentLine READ currentLine WRITE setCurrentLine )
    Q_PROPERTY( int stopLine READ stopLine WRITE setStopLine )
    Q_PROPERTY( int bugLine READ bugLine WRITE setBugLine )
public:
    NumberedTextView( QWidget *parent = 0 );
    ~NumberedTextView();

    /** Returns the QTextEdit of the main view. */
    QTextEdit *textEdit() const { return view; }

    /**
     * Sets the line that should have the current line indicator.
     * A value of -1 indicates no line should show the indicator.
     */
    void setCurrentLine( int lineno );

    /**
     * Sets the line that should have the stop line indicator.
     * A value of -1 indicates no line should show the indicator.
     */
    void setStopLine( int lineno );

    /**
     * Sets the line that should have the bug line indicator.
     * A value of -1 indicates no line should show the indicator.
     */
    void setBugLine( int lineno );

    int currentLine() const;
    int stopLine() const;
    int bugLine() const;

    /** @internal Used to get tooltip events from the view for the hover signal. */
    bool eventFilter( QObject *obj, QEvent *event );

    QString text() const;
    void setText( const QString &text );


Q_SIGNALS:
    /**
     * Emitted when the mouse is hovered over the text edit component.
     * @param word The word under the mouse pointer
     */
    void mouseHover( const QString &word );

    /**
     * Emitted when the mouse is hovered over the text edit component.
     * @param pos The position of the mouse pointer.
     * @param word The word under the mouse pointer
     */
    void mouseHover( const QPoint &pos, const QString &word );

protected Q_SLOTS:
    /** @internal Used to update the highlight on the current line. */
    void textChanged( int pos, int added, int removed );

private:
    QTextEdit *view;
    NumberBar *numbers;
    QHBoxLayout *box;
    //int m_currentLine;
    QTextCursor highlight;
};


#endif // NUMBERED_TEXT_VIEW_H


