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diff --git a/src/plugins/projectexplorer/nodesvisitor.h b/src/plugins/projectexplorer/nodesvisitor.h
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+/***************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (qt-info@nokia.com)
+**
+** 
+** Non-Open Source Usage  
+** 
+** Licensees may use this file in accordance with the Qt Beta Version
+** License Agreement, Agreement version 2.2 provided with the Software or,
+** alternatively, in accordance with the terms contained in a written
+** agreement between you and Nokia.  
+** 
+** GNU General Public License Usage 
+** 
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License versions 2.0 or 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 GNU
+** General Public Licensing requirements will be met:
+**
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt GPL Exception version
+** 1.2, included in the file GPL_EXCEPTION.txt in this package.  
+** 
+***************************************************************************/
+#ifndef NODESVISITOR_H
+#define NODESVISITOR_H
+
+#include "projectexplorer_export.h"
+
+#include <QtCore/QString>
+#include <QtCore/QStringList>
+
+namespace ProjectExplorer {
+
+class Node;
+class FileNode;
+class SessionNode;
+class ProjectNode;
+class FolderNode;
+
+class NodesVisitor {
+public:
+    virtual ~NodesVisitor() {}
+
+    virtual void visitSessionNode(SessionNode *) {}
+    virtual void visitProjectNode(ProjectNode *) {}
+    virtual void visitFolderNode(FolderNode *) {}
+protected:
+     NodesVisitor() {}
+};
+
+/* useful visitors */
+
+class PROJECTEXPLORER_EXPORT FindNodesForFileVisitor : public NodesVisitor {
+public:
+    FindNodesForFileVisitor(const QString &fileToSearch);
+
+    QList<Node*> nodes() const;
+
+    void visitProjectNode(ProjectNode *node);
+    void visitFolderNode(FolderNode *node);
+private:
+    QString m_path;
+    QList<Node*> m_nodes;
+};
+
+class PROJECTEXPLORER_EXPORT FindAllFilesVisitor : public NodesVisitor {
+public:
+    QStringList filePaths() const;
+
+    void visitProjectNode(ProjectNode *projectNode);
+    void visitFolderNode(FolderNode *folderNode);
+private:
+    QStringList m_filePaths;
+};
+
+}
+
+#endif // NODESVISITOR_H