Mercurial > ldforge / changeset

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/misc/documentPointer.cc	Sun Dec 22 20:45:56 2013 +0200
@@ -0,0 +1,67 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013 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/>.
+ */
+
+#include "documentPointer.h"
+#include "../document.h"
+
+LDDocumentPointer::LDDocumentPointer()  : m_Pointer (null) {}
+
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+LDDocumentPointer::LDDocumentPointer (LDDocument* ptr) :
+	m_Pointer (ptr)
+{	addReference ();
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+LDDocumentPointer::LDDocumentPointer (const LDDocumentPointer& other) :
+	m_Pointer (other.getPointer())
+{	addReference ();
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+LDDocumentPointer::~LDDocumentPointer()
+{	removeReference();
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void LDDocumentPointer::addReference()
+{	if (getPointer() != null)
+		getPointer()->addReference (this);
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void LDDocumentPointer::removeReference()
+{	if (getPointer() != null)
+		getPointer()->removeReference (this);
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+LDDocumentPointer& LDDocumentPointer::operator= (LDDocument* ptr)
+{	if (ptr != getPointer())
+	{	removeReference();
+		setPointer (ptr);
+		addReference();
+	}
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/misc/documentPointer.h	Sun Dec 22 20:45:56 2013 +0200
@@ -0,0 +1,53 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013 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 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);
+
+		LDDocumentPointer& operator= (LDDocumentPointer& other)
+		{	return operator= (other.getPointer());
+		}
+
+		LDDocument* operator->() const
+		{	return getPointer();
+		}
+
+		operator LDDocument*() const
+		{	return getPointer();
+		}
+
+	private:
+		void addReference();
+		void removeReference();
+};
+
+#endif // LDFORGE_DOCUMENT_POINTER_H
\ No newline at end of file