Initial revision

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@750 72102866-910b-0410-8b05-ffd578937521

Source/TreeNode.m

@@ -0,0 +1,97 @@
+/* Implementation for Objective-C TreeNode object
+   Copyright (C) 1993,1994, 1995 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.
+*/ 
+
+#include <objects/TreeNode.h>
+#include <objects/Array.h>
+
+@implementation TreeNode
+
++ initialize
+{
+  if (self == [TreeNode class])
+    [self setVersion:0];	/* beta release */
+  return self;
+}
+
++ defaultChildrenCollectionClass
+{
+  return [Array class];
+}
+
+- initWithChildren: (id <Collecting>)kids
+{
+  [super init];
+  _parent = [self nilNode];
+  _children = kids;
+  return self;
+}
+
+- init
+{
+  [self initWithChildren:[[[self defaultChildrenCollectionClass] alloc] init]];
+  return self;
+}
+
+- (void) encodeWithCoder: aCoder
+{
+  [super encodeWithCoder:aCoder];
+  [aCoder encodeObjectReference:_parent withName:"Parent Tree Node"];
+  [aCoder encodeObject:_children withName:"Children of Tree Node"];
+}
+
+- initWithCoder: aCoder
+{
+  [self initWithCoder:aCoder];
+  [aCoder decodeObjectAt:&_parent withName:NULL];
+  [aCoder decodeObjectAt:&_children withName:NULL];
+  return n;
+}
+
+- children
+{
+  return _children;
+}
+
+- parentNode
+{
+  return _parent;
+}
+
+- (void) setChildren: (id <IndexedCollecting>)kids
+{
+  /* xxx
+  [kids retain];
+  [_children release];
+  */
+  _children = kids;
+  return self;
+}
+
+- (void) setParentNode: aNode
+{
+  _parent = aNode;
+  return self;
+}
+
+@end
+