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diff --git a/examples/quickcontrols/texteditor/documenthandler.h b/examples/quickcontrols/texteditor/documenthandler.h
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+++ b/examples/quickcontrols/texteditor/documenthandler.h
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+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef DOCUMENTHANDLER_H
+#define DOCUMENTHANDLER_H
+
+#include <QFont>
+#include <QObject>
+#include <QTextCursor>
+#include <QUrl>
+
+QT_BEGIN_NAMESPACE
+class QTextDocument;
+class QQuickTextDocument;
+QT_END_NAMESPACE
+
+class DocumentHandler : public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QQuickTextDocument *document READ document WRITE setDocument NOTIFY documentChanged)
+    Q_PROPERTY(int cursorPosition READ cursorPosition WRITE setCursorPosition NOTIFY cursorPositionChanged)
+    Q_PROPERTY(int selectionStart READ selectionStart WRITE setSelectionStart NOTIFY selectionStartChanged)
+    Q_PROPERTY(int selectionEnd READ selectionEnd WRITE setSelectionEnd NOTIFY selectionEndChanged)
+
+    Q_PROPERTY(QColor textColor READ textColor WRITE setTextColor NOTIFY textColorChanged)
+    Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment NOTIFY alignmentChanged)
+
+    Q_PROPERTY(QFont font READ font WRITE setFont NOTIFY fontChanged)
+
+    Q_PROPERTY(bool bold READ bold WRITE setBold NOTIFY boldChanged)
+    Q_PROPERTY(bool underline READ underline WRITE setUnderline NOTIFY underlineChanged)
+    Q_PROPERTY(bool italic READ italic WRITE setItalic NOTIFY italicChanged)
+
+    Q_PROPERTY(QString fileName READ fileName NOTIFY fileUrlChanged)
+    Q_PROPERTY(QString fileType READ fileType NOTIFY fileUrlChanged)
+    Q_PROPERTY(QUrl fileUrl READ fileUrl NOTIFY fileUrlChanged)
+
+    Q_PROPERTY(bool modified READ modified WRITE setModified NOTIFY modifiedChanged)
+
+public:
+    explicit DocumentHandler(QObject *parent = nullptr);
+
+    QQuickTextDocument *document() const;
+    void setDocument(QQuickTextDocument *document);
+
+    int cursorPosition() const;
+    void setCursorPosition(int position);
+
+    int selectionStart() const;
+    void setSelectionStart(int position);
+
+    int selectionEnd() const;
+    void setSelectionEnd(int position);
+
+    QColor textColor() const;
+    void setTextColor(const QColor &color);
+
+    Qt::Alignment alignment() const;
+    void setAlignment(Qt::Alignment alignment);
+
+    QFont font() const;
+    void setFont(const QFont & font);
+
+    bool bold() const;
+    void setBold(bool bold);
+
+    bool underline() const;
+    void setUnderline(bool underline);
+
+    bool italic() const;
+    void setItalic(bool italic);
+
+    QString fileName() const;
+    QString fileType() const;
+    QUrl fileUrl() const;
+
+    bool modified() const;
+    void setModified(bool m);
+
+public Q_SLOTS:
+    void load(const QUrl &fileUrl);
+    void saveAs(const QUrl &fileUrl);
+
+Q_SIGNALS:
+    void documentChanged();
+    void cursorPositionChanged();
+    void selectionStartChanged();
+    void selectionEndChanged();
+
+    void fontChanged();
+    void boldChanged();
+    void underlineChanged();
+    void italicChanged();
+    void textColorChanged();
+    void alignmentChanged();
+
+    void textChanged();
+    void fileUrlChanged();
+
+    void loaded(const QString &text, int format);
+    void error(const QString &message);
+
+    void modifiedChanged();
+
+private:
+    void reset();
+    QTextCursor textCursor() const;
+    QTextDocument *textDocument() const;
+    void mergeFormatOnWordOrSelection(const QTextCharFormat &format);
+
+    QQuickTextDocument *m_document;
+
+    int m_cursorPosition;
+    int m_selectionStart;
+    int m_selectionEnd;
+
+    QUrl m_fileUrl;
+};
+
+#endif // DOCUMENTHANDLER_H