/* This file is part of the KDE libraries
    Copyright (C) 2005, 2006 KJSEmbed Authors
    See included AUTHORS file.

    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.
*/
// -*- c++ -*-
#ifndef NUMBERED_TEXT_VIEW_H
#define NUMBERED_TEXT_VIEW_H

#include <QFrame>
#include <QPixmap>
#include <QTextCursor>
#include <QLabel>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include "SimpleEditor.h"

class SimpleEditor;
class QHBoxLayout;

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

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

    void setCurrentLine( int lineno );
    void setBugLine( int lineno );
    void toggleBreakpoint( int lineno );
    QList<int> *getBreakpoints();

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

protected:
    bool event( QEvent *ev );

private:
    SimpleEditor *edit;
    QPixmap stopMarker;
    QPixmap currentMarker;
    QPixmap bugMarker;
    QList<int> breakpoints;
    int currentLine;
    int bugLine;
    QRect stopRect;
    QRect currentRect;
    QRect bugRect;
};

/**
 * Displays a CodeEdit with line numbers.
 */
class NumberedCodeEdit : public QFrame
{
    Q_OBJECT

public:
    NumberedCodeEdit( QWidget *parent = 0 , SimpleEditor *textEdit=new SimpleEditor() );
    ~NumberedCodeEdit();

    QList<int> *getBreakpoints();

    void open(QString path);
    
    /**Saves file to path. @return true if all is OK.*/
    bool save(QString path = QString());

    QString path();
    void setPath(QString path);
    
    bool modified();
    void setModified(bool modify);

    /** Returns the CodeEdit of the main view. */
    SimpleEditor *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 );

    /**
     * Toggle breakpoint
     */
    void toggleBreakpoint( 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 );

    /** @internal Used to get tooltip events from the view for the hover signal. */
    bool eventFilter( QObject *obj, QEvent *event );
    
    /**Indent selected text.*/
    void indent();
    
    /**UnIndent selected text.*/
    void unindent();
    
    /**Comment selected text.*/
    void comment();
    
    /**UnComment selected text.*/
    void uncomment();

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 );
    
    /**
     * Emitted when file is changed.
     */
    void textModified();

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

private:
    QString filePath;
    QLabel *line_column_label;
    SimpleEditor *view;
    NumberBar *numbers;
    QHBoxLayout *hbox;
    QVBoxLayout *vbox;
    int currentLine;
    QTextCursor highlight;
    bool textModifiedOk;
};


#endif // NUMBERED_TEXT_VIEW_H