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diff --git a/utils/themeeditor/gui/codeeditor.h b/utils/themeeditor/gui/codeeditor.h
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+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * This file has been copied from Nokia's Qt Examples, with minor modifications
+ * made available under the LGPL version 2.1, as the original file was licensed
+ *
+ ****************************************************************************
+ ****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#ifndef CODEEDITOR_H
+#define CODEEDITOR_H
+
+#include <QPlainTextEdit>
+#include <QObject>
+
+QT_BEGIN_NAMESPACE
+class QPaintEvent;
+class QResizeEvent;
+class QSize;
+class QWidget;
+QT_END_NAMESPACE
+
+class LineNumberArea;
+
+//![codeeditordefinition]
+
+class CodeEditor : public QPlainTextEdit
+{
+    Q_OBJECT
+
+public:
+    CodeEditor(QWidget *parent = 0);
+
+    void lineNumberAreaPaintEvent(QPaintEvent *event);
+    int lineNumberAreaWidth();
+    void addError(int line){ errors.append(line); }
+    void clearErrors(){ errors.clear(); }
+    void setErrorColor(QColor color){ errorColor = color; }
+    bool isError(int line){ return errors.contains(line); }
+    bool hasErrors(){ return !errors.isEmpty(); }
+
+protected:
+    void resizeEvent(QResizeEvent *event);
+
+private slots:
+    void updateLineNumberAreaWidth(int newBlockCount);
+    void updateLineNumberArea(const QRect &, int);
+
+private:
+    QWidget *lineNumberArea;
+    QList<int> errors;
+    QColor errorColor;
+};
+
+//![codeeditordefinition]
+//![extraarea]
+
+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;
+};
+
+//![extraarea]
+
+#endif