Long live Qt 4.5!

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diff --git a/tools/assistant/compat/helpwindow.h b/tools/assistant/compat/helpwindow.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Qt Assistant of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef HELPWINDOW_H
+#define HELPWINDOW_H
+
+#include <QTextBrowser>
+
+QT_BEGIN_NAMESPACE
+
+class MainWindow;
+class QKeyEvent;
+class QMime;
+class QMouseEvent;
+class QMenu;
+
+class HelpWindow : public QTextBrowser
+{
+    Q_OBJECT
+public:
+    HelpWindow( MainWindow *m, QWidget *parent = 0);
+    void setSource( const QUrl &name );
+    void blockScrolling( bool b );
+    void openLinkInNewWindow( const QString &link );
+    void openLinkInNewPage( const QString &link );
+    void addMimePath( const QString &path );
+
+    void mousePressEvent(QMouseEvent *e);
+    void keyPressEvent(QKeyEvent *);
+
+signals:
+    void chooseWebBrowser();
+    void choosePDFReader();
+
+protected:
+    virtual void contextMenuEvent(QContextMenuEvent *e);
+    virtual void mouseReleaseEvent(QMouseEvent *e);
+
+protected slots:
+    void ensureCursorVisible();
+
+private slots:
+    void openLinkInNewWindow();
+    void openLinkInNewPage();
+
+    bool isKDERunning() const;
+
+private:
+    bool hasAnchorAt(const QPoint& pos);
+
+    MainWindow *mw;
+    QString lastAnchor;
+    bool blockScroll;
+    bool shiftPressed;
+    bool newWindow;
+    bool fwdAvail;
+    bool backAvail;
+};
+
+QT_END_NAMESPACE
+
+#endif // HELPWINDOW_H