Added Chameleon-support.

CHANGES.txt

@@ -3,6 +3,8 @@ Changes
 
 In next release...
 
+- Added Chameleon-support.
+
 - Reimplemented override logic; the total usage cost is now reduced to
   an insignificant amount. Meanwhile, only templates that are defined
   as class-attributes (e.g. on views, viewlets and portlets) can be

README.txt

@@ -1,8 +1,9 @@
 Overview
 ========
 
-The z3c.jbot (or "Just a bunch of templates") package allows drop-in
-page template overrides. It works on Zope 2 and Zope 3.
+The ``z3c.jbot`` (or "Just a bunch of templates") package allows
+drop-in page template overrides. It works on Zope 2 and Zope 3. The
+Chameleon rendering engine is supported [#]_.
 
 Any template that is defined as a class-attribute can be overriden
 using jbot, e.g. those used in views, viewlets and portlets. The
@@ -32,6 +33,9 @@ use with jbot using a ZCML-directive::
 Use of this package adds a small (2-3 ms per request on Plone) to the
 total application response time.
 
+.. [#] To enable Chameleon on Zope 2, use the ``five.pt`` package
+(CMF-apps like Plone should use ``cmf.pt`` which adds full support).
+
 Author
 ------
 

z3c/jbot/__init__.py

@@ -13,26 +13,43 @@
 except:
     pass
 
-logger.info("Patching page template classes for use with z3c.jbot...")
-
 registry = {}
 
-for pt_class in PT_CLASSES:
-    def get(template, view=None, cls=None):
-        layer = utility.getLayer()
-        key = layer, template
-        inst = registry.get(key)
-        if inst is None:
-            cls = type(template)
-            inst = registry[key] = cls.__new__(cls)
-            inst.__dict__ = template.__dict__.copy()
-
-        for manager in utility.getManagers():
-            # register template; this call returns ``True`` if
-            # template was invalidated
-            if manager.registerTemplate(inst, template):
-                break
-
-        return inst
+def get(template, view=None, cls=None):
+    layer = utility.getLayer()
+    key = layer, template
+    inst = registry.get(key)
+    if inst is None:
+        cls = type(template)
+        inst = registry[key] = cls.__new__(cls)
+        inst.__dict__ = template.__dict__.copy()
+
+    for manager in utility.getManagers():
+        # register template; this call returns ``True`` if the
+        # template was invalidated (changed filename)
+        if manager.registerTemplate(inst, template):
+            break
+
+    return inst
+
+try:
+    import five.pt.pagetemplate
+except ImportError:
+    pass
+else:
+    pt_class = five.pt.pagetemplate.ViewPageTemplateFile
+    bind = pt_class.__get__
+
+    def get_and_bind(template, view=None, cls=None):
+        inst = get(template, view, cls)
+        if inst._v_last_read is False:
+            inst.registry.purge()
+            inst.read()
+        return bind(inst, view, cls)
 
+    pt_class.__get__ = get_and_bind
+    logger.info(repr(pt_class))
+
+for pt_class in PT_CLASSES:
     pt_class.__get__ = get
+    logger.info(repr(pt_class))

z3c/jbot/manager.py

@@ -142,6 +142,7 @@ def registerTemplate(self, template, token):
             self.templates[token] = filename
         else:
             self.templates[token] = IGNORE
+            return False
 
         # force cook
         template._v_last_read = False