Let forms choose *not* to auto-disable their cancel button

tailbone/forms2/core.py

@@ -324,6 +324,8 @@ class Form(object):
     update_label = "Save"
     show_cancel = True
     auto_disable = True
+    auto_disable_save = True
+    auto_disable_cancel = True
 
     def __init__(self, fields=None, schema=None, request=None, readonly=False, readonly_fields=[],
                  model_instance=None, model_class=None, nodes={}, enums={}, labels={}, renderers=None,
@@ -687,7 +689,8 @@ class Form(object):
         context['form'] = self
         context['dform'] = dform
         context['form_kwargs'] = {}
-        if self.auto_disable:
+        # TODO: deprecate / remove the latter option here
+        if self.auto_disable_save or self.auto_disable:
             context['form_kwargs']['class_'] = 'autodisable'
         context['request'] = self.request
         context['readonly_fields'] = self.readonly_fields

tailbone/templates/forms2/deform.mako

@@ -77,7 +77,7 @@ ${h.csrf_token(request)}
 ##             ${h.submit('create_and_continue', form.successive_create_label)}
 ##         % endif
       % if getattr(form, 'show_cancel', True):
-          ${h.link_to("Cancel", form.cancel_url, class_='button autodisable')}
+          ${h.link_to("Cancel", form.cancel_url, class_='cancel button{}'.format(' autodisable' if form.auto_disable_cancel else ''))}
       % endif
     </div>
 % endif