Add delete action support

Partially implements blueprint mistral-dashboard-crud-operations

Change-Id: Iceda724d771df567c82180e44200fe60c4e88153

mistraldashboard/actions/tables.py

@@ -13,10 +13,13 @@
 # limitations under the License.
 
 from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import ungettext_lazy
 
 from horizon import tables
 from horizon.utils import filters
 
+from mistraldashboard import api
+
 
 class CreateAction(tables.LinkAction):
     name = "create"
@@ -34,6 +37,33 @@ class UpdateAction(tables.LinkAction):
     icon = "pencil"
 
 
+class DeleteAction(tables.DeleteAction):
+    @staticmethod
+    def action_present(count):
+        return ungettext_lazy(
+            u"Delete Action",
+            u"Delete Actions",
+            count
+        )
+
+    @staticmethod
+    def action_past(count):
+        return ungettext_lazy(
+            u"Deleted Action",
+            u"Deleted Actions",
+            count
+        )
+
+    def delete(self, request, action_name):
+        api.action_delete(request, action_name)
+
+    def allowed(self, request, action=None):
+        if action:
+            return not action.is_system
+        else:
+            return True
+
+
 def tags_to_string(action):
     return ', '.join(action.tags) if action.tags else None
 
@@ -80,4 +110,5 @@ class ActionsTable(tables.DataTable):
     class Meta(object):
         name = "actions"
         verbose_name = _("Actions")
-        table_actions = (CreateAction, UpdateAction)
+        table_actions = (CreateAction, UpdateAction, DeleteAction)
+        row_actions = (DeleteAction,)

mistraldashboard/api.py

@@ -221,3 +221,12 @@ def action_update(request, action_definition):
     """
 
     return mistralclient(request).actions.update(action_definition)
+
+
+def action_delete(request, action_name):
+    """Delete action.
+
+    :param action_name: Action name
+    """
+
+    return mistralclient(request).actions.delete(action_name)