Added Zope-specific module that adds functionality if Zope is loaded.

Encapsulated cookie-based tree in a helper method.

lib/python/ZTUtils/Zope.py

+##############################################################################
+# 
+# Zope Public License (ZPL) Version 1.0
+# -------------------------------------
+# 
+# Copyright (c) Digital Creations.  All rights reserved.
+# 
+# This license has been certified as Open Source(tm).
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+# 
+# 1. Redistributions in source code must retain the above copyright
+#    notice, this list of conditions, and the following disclaimer.
+# 
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions, and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 
+# 3. Digital Creations requests that attribution be given to Zope
+#    in any manner possible. Zope includes a "Powered by Zope"
+#    button that is installed by default. While it is not a license
+#    violation to remove this button, it is requested that the
+#    attribution remain. A significant investment has been put
+#    into Zope, and this effort will continue if the Zope community
+#    continues to grow. This is one way to assure that growth.
+# 
+# 4. All advertising materials and documentation mentioning
+#    features derived from or use of this software must display
+#    the following acknowledgement:
+# 
+#      "This product includes software developed by Digital Creations
+#      for use in the Z Object Publishing Environment
+#      (http://www.zope.org/)."
+# 
+#    In the event that the product being advertised includes an
+#    intact Zope distribution (with copyright and license included)
+#    then this clause is waived.
+# 
+# 5. Names associated with Zope or Digital Creations must not be used to
+#    endorse or promote products derived from this software without
+#    prior written permission from Digital Creations.
+# 
+# 6. Modified redistributions of any form whatsoever must retain
+#    the following acknowledgment:
+# 
+#      "This product includes software developed by Digital Creations
+#      for use in the Z Object Publishing Environment
+#      (http://www.zope.org/)."
+# 
+#    Intact (re-)distributions of any official Zope release do not
+#    require an external acknowledgement.
+# 
+# 7. Modifications are encouraged but must be packaged separately as
+#    patches to official Zope releases.  Distributions that do not
+#    clearly separate the patches from the original work must be clearly
+#    labeled as unofficial distributions.  Modifications which do not
+#    carry the name Zope may be packaged in any form, as long as they
+#    conform to all of the clauses above.
+# 
+# 
+# Disclaimer
+# 
+#   THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
+#   EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+#   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+#   PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
+#   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+#   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+#   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+#   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+#   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+#   SUCH DAMAGE.
+# 
+# 
+# This software consists of contributions made by Digital Creations and
+# many individuals on behalf of Digital Creations.  Specific
+# attributions are listed in the accompanying credits file.
+# 
+##############################################################################
+__doc__='''Zope-specific versions of ZTUTils classes
+
+$Id: Zope.py,v 1.1 2001/07/11 19:02:22 evan Exp $'''
+__version__='$Revision: 1.1 $'[11:-2]
+
+from Tree import encodeExpansion, decodeExpansion
+from SimpleTree import SimpleTreeMaker
+from Batch import Batch
+from string import split, join
+
+class SimpleTreeMaker(SimpleTreeMaker):
+    def cookieTree(self, root_object):
+        '''Make a tree with state stored in a cookie.'''
+        tree_pre = self.tree_pre
+        state_name = '%s-state' % tree_pre
+        set_name = '%s-setstate' % tree_pre
+
+        req = root_object.REQUEST
+        state = req.get(state_name)
+        if state:
+            setst = req.form.get(set_name)
+            if setst:
+                st, pn, expid = split(setst, ',')
+                state, (m, obid) = decodeExpansion(state, int(pn))
+                if m is None:
+                    pass
+                elif st == 'e':
+                    if m[obid] is None:
+                        m[obid] = {expid: None}
+                    else:
+                        m[obid][expid] = None
+                elif st == 'c' and m is not state and obid==expid:
+                    del m[obid]
+            else:
+                state = decodeExpansion(state)
+        tree = self.tree(root_object, state)
+        rows = tree.flat()
+        req.RESPONSE.setCookie(state_name, encodeExpansion(rows))
+        return tree, rows

lib/python/ZTUtils/__init__.py

@@ -84,13 +84,18 @@
 ##############################################################################
 __doc__='''Package of template utility classes and functions.
 
-$Id: __init__.py,v 1.2 2001/04/27 20:51:20 evan Exp $'''
-__version__='$Revision: 1.2 $'[11:-2]
-
-__allow_access_to_unprotected_subobjects__ = 1
-__roles__ = None
+$Id: __init__.py,v 1.3 2001/07/11 19:02:22 evan Exp $'''
+__version__='$Revision: 1.3 $'[11:-2]
 
 from Batch import Batch
 from Iterator import Iterator
 from Tree import TreeMaker, encodeExpansion, decodeExpansion, a2b, b2a
 from SimpleTree import SimpleTreeMaker
+
+import sys
+if sys.modules.has_key('Zope'):
+    del sys
+    __allow_access_to_unprotected_subobjects__ = 1
+    __roles__ = None
+
+    from Zope import Batch, SimpleTreeMaker