[Checkins] SVN: z3c.form/branches/pcardune-tweaks/src/z3c/form/button. Made the ButtonAction adapter lookup function without having a string as a required object and add tests for customized button action implementation. This should be ready to be merged info trunk.

[Paul Carduner]

Log message for revision 76821:
  Made the ButtonAction adapter lookup function without having a string as a required object and add tests for customized button action implementation.  This should be ready to be merged info trunk.

Changed:
  U   z3c.form/branches/pcardune-tweaks/src/z3c/form/button.py
  U   z3c.form/branches/pcardune-tweaks/src/z3c/form/button.txt

-=-
Modified: z3c.form/branches/pcardune-tweaks/src/z3c/form/button.py
===================================================================
--- z3c.form/branches/pcardune-tweaks/src/z3c/form/button.py	2007-06-19 22:58:08 UTC (rev 76820)
+++ z3c.form/branches/pcardune-tweaks/src/z3c/form/button.py	2007-06-20 01:25:11 UTC (rev 76821)
@@ -223,9 +223,11 @@
             fullName = prefix + name
             # Look up a button action factory
             buttonAction = zope.component.queryMultiAdapter(
-                (self.request, button, fullName), interfaces.IFieldWidget)
+                (self.request, button), interfaces.IFieldWidget)
+            if buttonAction is not None:
+                buttonAction.name = fullName
             # if one is not found, use the default
-            if buttonAction is None:
+            else:
                 buttonAction = ButtonAction(self.request, button, fullName)
             # Look up a potential custom title for the action.
             title = zope.component.queryMultiAdapter(

Modified: z3c.form/branches/pcardune-tweaks/src/z3c/form/button.txt
===================================================================
--- z3c.form/branches/pcardune-tweaks/src/z3c/form/button.txt	2007-06-19 22:58:08 UTC (rev 76820)
+++ z3c.form/branches/pcardune-tweaks/src/z3c/form/button.txt	2007-06-20 01:25:11 UTC (rev 76821)
@@ -63,6 +63,31 @@
   >>> actions['apply']
   <ButtonAction 'form.buttons.apply' u'Apply'>
 
+It is possible to customize how a button is transformed into an action
+by registering an adapter for the request and the button that provides
+IFieldWidget.
+
+  >>> import zope.component
+  >>> from zope.publisher.interfaces.browser import IBrowserRequest
+  >>> class CustomButtonAction(button.ButtonAction):
+  ...     """Custom Button Action Class."""
+  ...     zope.interface.implements(interfaces.IFieldWidget)
+  ...     zope.component.adapts(IBrowserRequest, interfaces.IButton)
+  ...
+  ...     def __init__(self, request, field):
+  ...         super(CustomButtonAction, self).__init__(request, field, None)
+
+  >>> zope.component.provideAdapter(CustomButtonAction,
+  ...                    (IBrowserRequest,interfaces.IButton),
+  ...                    interfaces.IFieldWidget)
+
+Now if we rerun update we will get this other ButtonAction
+implementation.
+
+  >>> actions.update()
+  >>> actions['apply']
+  <CustomButtonAction 'form.buttons.apply' u'Apply'>
+
 Button actions are locations:
 
   >>> apply = actions['apply']