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diff --git a/src/k3bdataprojectinterface.h b/src/k3bdataprojectinterface.h
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+/* 
+ *
+ * $Id: k3bdataprojectinterface.h 619556 2007-01-03 17:38:12Z trueg $
+ * Copyright (C) 2003 Sebastian Trueg <trueg@k3b.org>
+ *
+ * This file is part of the K3b project.
+ * Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * See the file "COPYING" for the exact licensing terms.
+ */
+
+
+#ifndef _K3B_DATA_PROJECT_INTERFACE_H_
+#define _K3B_DATA_PROJECT_INTERFACE_H_
+
+#include "k3bprojectinterface.h"
+
+#include <qstringlist.h>
+
+class K3bDataDoc;
+
+
+class K3bDataProjectInterface : public K3bProjectInterface
+{
+  K_DCOP
+
+ public:
+  K3bDataProjectInterface( K3bDataDoc*, const char* name = 0 );
+  ~K3bDataProjectInterface();
+
+ k_dcop:
+  /**
+   * Create a new folder in the root of the doc.
+   * This is the same as calling createFolder( name, "/" )
+   */
+  bool createFolder( const QString& name );
+
+  /**
+   * Create a new folder with name @p name in the folder with the
+   * absolute path @p parent. 
+   *
+   * \return true if the folder was created successfully, false if 
+   *         an item with the same name already exists or the parent
+   *         directory could not be found.
+   *
+   * Example: createFolder( "test", "/foo/bar" ) will create the
+   *          folder /foo/bar/test.
+   */
+  bool createFolder( const QString& name, const QString& parent );
+
+  /**
+   * Add urls to a specific folder in the project.
+   *
+   * Example: addUrl( "test.txt", "/foo/bar" ) will add the file test.txt
+   *          to folder /foo/bar.
+   */
+  void addUrl( const QString& url, const QString& parent );
+
+  void addUrls( const QStringList& urls, const QString& parent );
+
+  /**
+   * Remove an item
+   * \return true if the item was successfully removed.
+   */
+  bool removeItem( const QString& path );
+
+  /**
+   * Rename an item
+   * \return true if the item was successfully renamed, false if
+   *         no item could be found at \p path, \p newName is empty,
+   *         or the item cannot be renamed for some reason.
+   */
+  bool renameItem( const QString& path, const QString& newName );
+
+  /**
+   * Set the volume ID of the data project. This is the name shown by Windows
+   * when the CD is inserted.
+   */
+  void setVolumeID( const QString& id );
+
+  /**
+   * \return true if the specified path exists in the project and it is a folder.
+   */
+  bool isFolder( const QString& path ) const;
+
+  /**
+   * \return the names of the child elements of the item determined by path.
+   */
+  QStringList children( const QString& path ) const;
+
+  /**
+   * Set the sort weight of an item
+   * \return false if the item at \p could not be found.
+   */
+  bool setSortWeight( const QString& path, long weight ) const;
+
+ private:
+  K3bDataDoc* m_dataDoc;
+};
+
+#endif