--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ZTUtils/SimpleTree.py	Fri Aug 30 08:25:34 2002 +0000
@@ -0,0 +1,57 @@
+##############################################################################
+#
+# Copyright (c) 2001 Zope Corporation and Contributors. All Rights Reserved.
+# 
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.0 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE
+# 
+##############################################################################
+__doc__='''Simple Tree classes
+
+$Id: SimpleTree.py,v 1.1 2002-08-30 08:25:34 richard Exp $'''
+__version__='$Revision: 1.1 $'[11:-2]
+
+from Tree import TreeMaker, TreeNode, b2a
+
+class SimpleTreeNode(TreeNode):
+    def branch(self):
+        if self.state == 0:
+            return {'link': None, 'img': '  '}
+
+        if self.state < 0:
+            setst = 'expand'
+            exnum = self.aq_parent.expansion_number
+            img = 'pl'
+        else:
+            setst = 'collapse'
+            exnum = self.expansion_number
+            img = 'mi'
+
+        base = self.aq_acquire('baseURL')
+        obid = self.id
+        pre = self.aq_acquire('tree_pre')
+
+        return {'link': '?%s-setstate=%s,%s,%s#%s' % (pre, setst[0],
+                                                      exnum, obid, obid),
+        'img': '<img src="%s/p_/%s" alt="%s" border="0">' % (base, img, setst)}
+        
+
+class SimpleTreeMaker(TreeMaker):
+    '''Generate Simple Trees'''
+
+    def __init__(self, tree_pre="tree"):
+        self.tree_pre = tree_pre
+
+    def node(self, object):
+        node = SimpleTreeNode()
+        node.object = object
+        node.id = b2a(self.getId(object))
+        return node
+
+    def markRoot(self, node):
+        node.tree_pre = self.tree_pre
+        node.baseURL = node.object.REQUEST['BASEPATH1']