LimeReport/limereport/scripteditor/lrcodeeditor.h

#ifndef LRCODEEDITOR_H
#define LRCODEEDITOR_H

#include "lrscripthighlighter.h"

#include <QPlainTextEdit>
#include <QSyntaxHighlighter>

QT_BEGIN_NAMESPACE
class QWidget;
class QCompleter;
class QKeyEvent;
class QScrollBar;
QT_END_NAMESPACE

namespace LimeReport {

class CodeEditor: public QPlainTextEdit {
    Q_OBJECT
public:
    CodeEditor(QWidget* parent = 0);
    void setCompleter(QCompleter* value);
    QCompleter* compleater() const { return m_completer; }
    void lineNumberAreaPaintEvent(QPaintEvent* event);
    int lineNumberAreaWidth();

protected:
    void keyPressEvent(QKeyEvent* e);
    void focusInEvent(QFocusEvent* e);
    void resizeEvent(QResizeEvent* event);

private:
    QString textUnderCursor() const;
    bool matchLeftParenthesis(QTextBlock currentBlock, QChar parenthesisType, int i,
                              int numLeftParentheses);
    bool matchRightParenthesis(QTextBlock currentBlock, QChar parenthesisType, int i,
                               int numRightParentheses);
    void createParenthesisSelection(int pos);
    bool charIsParenthesis(QChar character, ParenthesisType type);
    QChar getParenthesisReverceChar(QChar parenthesisChar);
private slots:
    void insertCompletion(const QString& completion);
    void updateLineNumberAreaWidth(int newBlockCount);
    void highlightCurrentLine();
    void updateLineNumberArea(const QRect& rect, int dy);
    void matchParentheses();

private:
    QCompleter* m_completer;
    QWidget* lineNumberArea;
};

class LineNumberArea: public QWidget {
public:
    LineNumberArea(CodeEditor* editor): QWidget(editor) { codeEditor = editor; }

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

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

private:
    CodeEditor* codeEditor;
};

} // namespace LimeReport

#endif // LRCODEEDITOR_H