Initial revision

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@1 72102866-910b-0410-8b05-ffd578937521

Source/objects/EltNodeCollector.h

@@ -0,0 +1,67 @@
+/* Interface for Objective-C EltNodeCollector collection object
+   Copyright (C) 1993,1994 Free Software Foundation, Inc.
+
+   Written by:  R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
+   Date: May 1993
+
+   This file is part of the GNU Objective C Class Library.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/ 
+
+/* EltNodeCollector */
+
+#ifndef __EltNodeCollector_h_INCLUDE_GNU
+#define __EltNodeCollector_h_INCLUDE_GNU
+
+#include <objects/stdobjects.h>
+#include <objects/IndexedCollection.h>
+
+/* Protocol for a node that also holds an element */
+@protocol EltHolding
+- initElement: (elt)anElement 
+    encoding: (const char *)eltEncoding;
+- (elt) elementData;
+@end
+
+
+/* It's is a bit unfortunate that we insist that the underlying
+   collector conform to IndexedCollecting. */
+
+@interface EltNodeCollector : IndexedCollection
+{
+  @private
+  id _contents_collector;
+  id _node_class;
+  int (*_comparison_function)(elt,elt);
+}
+
+
+- initWithType: (const char *)contentEncoding
+    nodeCollector: aNodeCollector
+    nodeClass: aNodeClass;
+
+// The class of the autocreated link objects, must conform to <EltHolding>;
+- eltNodeClass;
+
+// Getting the underlying node collector that holds the contents;
+- contentsCollector;
+
+// Finding the node that contains anElement;
+- (id <EltHolding>) eltNodeWithElement: (elt)anElement;
+
+@end
+
+#endif /* __EltNodeCollector_h_INCLUDE_GNU */