diff -r 3d8ab0f89102 -r 450827da2376 src/misc/DocumentPointer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/misc/DocumentPointer.h	Tue Jan 21 02:09:14 2014 +0200
@@ -0,0 +1,58 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013, 2014 Santeri Piippo
+ *
+ *  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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LDFORGE_DOCUMENT_POINTER_H
+#define LDFORGE_DOCUMENT_POINTER_H
+
+#include "../Main.h"
+
+class LDSubfile;
+class LDDocument;
+
+class LDDocumentPointer
+{
+	PROPERTY (private, LDDocument*,			Pointer,	NO_OPS, STOCK_WRITE)
+
+	public:
+		LDDocumentPointer();
+		LDDocumentPointer (LDDocument* ptr);
+		LDDocumentPointer (const LDDocumentPointer& other);
+		~LDDocumentPointer();
+		LDDocumentPointer& operator= (LDDocument* ptr);
+
+		inline LDDocumentPointer& operator= (LDDocumentPointer& other)
+		{
+			return operator= (other.getPointer());
+		}
+
+		inline LDDocument* operator->() const
+		{
+			return getPointer();
+		}
+
+		inline operator LDDocument*() const
+		{
+			return getPointer();
+		}
+
+	private:
+		void addReference();
+		void removeReference();
+};
+
+#endif // LDFORGE_DOCUMENT_POINTER_H
\ No newline at end of file