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#ifndef CODEEDITOR_H
#define CODEEDITOR_H

#include <QPlainTextEdit>
#include <QObject>

class QPaintEvent;
class QResizeEvent;
class QSize;
class QWidget;

class LineNumberArea;

class ScriptEditWidget : public QPlainTextEdit
{
    Q_OBJECT
signals:
    void scriptChanged(const QString &script);
public:
    ScriptEditWidget(QWidget *parent=0);

    void lineNumberAreaPaintEvent(QPaintEvent *event);
    int lineNumberAreaWidth();

protected:
    void resizeEvent(QResizeEvent *event);

private slots:
    void updateLineNumberAreaWidth(int newBlockCount);
    void highlightCurrentLine();
    void updateLineNumberArea(const QRect &, int);

private:
    QWidget *m_lineNumberArea;
};


class LineNumberArea : public QWidget
{
public:
    LineNumberArea(ScriptEditWidget *editor) : QWidget(editor) {
        m_codeEditor = editor;
    }

    QSize sizeHint() const {
        return QSize(m_codeEditor->lineNumberAreaWidth(), 0);
    }

protected:
    void paintEvent(QPaintEvent *event) {
        m_codeEditor->lineNumberAreaPaintEvent(event);
    }

private:
    ScriptEditWidget *m_codeEditor;
};


#endif