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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Assistant of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QHELPSEARCHINDEXREADER_H
+#define QHELPSEARCHINDEXREADER_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API. It exists for the convenience
+// of the help generator tools. This header file may change from version
+// to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qhelpsearchengine.h"
+
+#include <QtCore/QList>
+#include <QtCore/QMutex>
+#include <QtCore/QObject>
+#include <QtCore/QString>
+#include <QtCore/QThread>
+#include <QtCore/QWaitCondition>
+
+QT_BEGIN_NAMESPACE
+
+class QHelpEngineCore;
+
+namespace fulltextsearch {
+
+class QHelpSearchIndexReader : public QThread
+{
+    Q_OBJECT
+
+public:
+    QHelpSearchIndexReader();
+    ~QHelpSearchIndexReader();
+
+    void cancelSearching();
+    void search(const QString &collectionFile,
+        const QString &indexFilesFolder,
+        const QList<QHelpSearchQuery> &queryList);
+    int hitCount() const;
+    QList<QHelpSearchEngine::SearchHit> hits(int start, int end) const;
+
+signals:
+    void searchingStarted();
+    void searchingFinished(int hits);
+
+protected:
+    mutable QMutex mutex;
+    QList<QHelpSearchEngine::SearchHit> hitList;
+    bool m_cancel;
+    QString m_collectionFile;
+    QList<QHelpSearchQuery> m_query;
+    QString m_indexFilesFolder;
+
+private:
+    virtual void run()=0;
+};
+
+}   // namespace fulltextsearch
+
+QT_END_NAMESPACE
+
+#endif  // QHELPSEARCHINDEXREADER_H