[Checkins] SVN: z3c.pt/trunk/ Added conditional application security configuration to play nice with zope.security proxies.

[Malthe Borch]

Log message for revision 90656:
  Added conditional application security configuration to play nice with zope.security proxies.

Changed:
  U   z3c.pt/trunk/CHANGES.txt
  U   z3c.pt/trunk/src/z3c/pt/configure.zcml
  U   z3c.pt/trunk/src/z3c/pt/interfaces.py
  U   z3c.pt/trunk/src/z3c/pt/utils.py

-=-
Modified: z3c.pt/trunk/CHANGES.txt
===================================================================
--- z3c.pt/trunk/CHANGES.txt	2008-09-01 15:23:52 UTC (rev 90655)
+++ z3c.pt/trunk/CHANGES.txt	2008-09-01 15:28:16 UTC (rev 90656)
@@ -13,6 +13,10 @@
 
   Features
 
+- Added security configuration for the TALES iterator (repeat
+  dictionary). This is made conditional on the availability of the
+  application security framework. [malthe]
+
 - Dynamic attributes are now ordered as they appear in the
   template. [malthe]
   

Modified: z3c.pt/trunk/src/z3c/pt/configure.zcml
===================================================================
--- z3c.pt/trunk/src/z3c/pt/configure.zcml	2008-09-01 15:23:52 UTC (rev 90655)
+++ z3c.pt/trunk/src/z3c/pt/configure.zcml	2008-09-01 15:28:16 UTC (rev 90656)
@@ -1,4 +1,5 @@
-<configure xmlns="http://namespaces.zope.org/zope">
+<configure xmlns="http://namespaces.zope.org/zope"
+           xmlns:zcml="http://namespaces.zope.org/zcml">
 
   <include package="zope.component" file="meta.zcml" />
   
@@ -13,6 +14,17 @@
   <adapter
      name="string"
      factory=".expressions.StringTranslation" />
+
+  <configure zcml:condition="installed zope.app.component">
+           
+      <include package="zope.app.component" file="meta.zcml" />
+      <include package="zope.app.security" file="meta.zcml" />
+      
+      <class class=".utils.repeatitem">
+        <allow interface=".interfaces.ITALESIterator" />
+      </class>
+    
+  </configure>
   
 </configure>
  

Modified: z3c.pt/trunk/src/z3c/pt/interfaces.py
===================================================================
--- z3c.pt/trunk/src/z3c/pt/interfaces.py	2008-09-01 15:23:52 UTC (rev 90655)
+++ z3c.pt/trunk/src/z3c/pt/interfaces.py	2008-09-01 15:28:16 UTC (rev 90656)
@@ -53,3 +53,86 @@
            define_var ::= Name python_expression
            
         """
+
+class ITALIterator(interface.Interface):
+    """A TAL iterator
+
+    Not to be confused with a Python iterator.
+    """
+
+    def next():
+        """Advance to the next value in the iteration, if possible
+
+        Return a true value if it was possible to advance and return
+        a false value otherwise.
+        """
+
+class ITALESIterator(ITALIterator):
+    """TAL Iterator provided by TALES
+
+    Values of this iterator are assigned to items in the repeat namespace.
+
+    For example, with a TAL statement like: tal:repeat="item items",
+    an iterator will be assigned to "repeat/item".  The iterator
+    provides a number of handy methods useful in writing TAL loops.
+
+    The results are undefined of calling any of the methods except
+    'length' before the first iteration.
+    """
+
+    def index():
+        """Return the position (starting with "0") within the iteration
+        """
+
+    def number():
+        """Return the position (starting with "1") within the iteration
+        """
+
+    def even():
+        """Return whether the current position is even
+        """
+
+    def odd():
+        """Return whether the current position is odd
+        """
+
+    def parity():
+        """Return 'odd' or 'even' depending on the position's parity
+
+        Useful for assigning CSS class names to table rows.
+        """
+
+    def start():
+        """Return whether the current position is the first position
+        """
+
+    def end():
+        """Return whether the current position is the last position
+        """
+
+    def letter():
+        """Return the position (starting with "a") within the iteration
+        """
+
+    def Letter():
+        """Return the position (starting with "A") within the iteration
+        """
+
+    def roman():
+        """Return the position (starting with "i") within the iteration
+        """
+
+    def Roman():
+        """Return the position (starting with "I") within the iteration
+        """
+
+    def item():
+        """Return the item at the current position
+        """
+
+    def length():
+        """Return the length of the sequence
+
+        Note that this may fail if the TAL iterator was created on a Python
+        iterator.
+        """

Modified: z3c.pt/trunk/src/z3c/pt/utils.py
===================================================================
--- z3c.pt/trunk/src/z3c/pt/utils.py	2008-09-01 15:23:52 UTC (rev 90655)
+++ z3c.pt/trunk/src/z3c/pt/utils.py	2008-09-01 15:28:16 UTC (rev 90656)
@@ -1,6 +1,9 @@
+from zope import interface
+
 import sys
+import config
 import logging
-import config
+import interfaces
 
 from UserDict import UserDict
 
@@ -56,6 +59,8 @@
         raise TypeError("Read-only dictionary does not support assignment.")
     
 class repeatitem(object):
+    interface.implements(interfaces.ITALESIterator)
+    
     def __init__(self, iterator, length):
         self.length = length
         self.iterator = iterator