add delete_own_comment_enabled option in control panel

plone/app/discussion/browser/comments.pt

@@ -2,6 +2,7 @@
                        isDiscussionAllowed view/is_discussion_allowed;
                        isAnonymousDiscussionAllowed view/anonymous_discussion_allowed;
                        isEditCommentAllowed view/edit_comment_allowed;
+                       isDeleteOwnCommentAllowed view/delete_own_comment_allowed;
                        isAnon view/is_anonymous;
                        canReview view/can_review;
                        replies python:view.get_replies(canReview);
@@ -90,7 +91,7 @@
                               action=""
                               method="post"
                               class="commentactionsform"
-		                      tal:condition="python: not canDelete and view.could_delete_own(reply)"
+		                      tal:condition="python:not canDelete and isDeleteOwnCommentAllowed and view.could_delete_own(reply)"
                               tal:attributes="action string:${reply/absolute_url}/@@delete-own-comment;
 			                      style python:view.can_delete_own(reply) and 'display: inline' or 'display: none'">
                             <input name="form.button.DeleteComment"

plone/app/discussion/browser/comments.py

@@ -346,8 +346,8 @@ class CommentsViewlet(ViewletBase):
                                                     aq_inner(reply))
 
     def can_delete(self, reply):
-        """By default requires 'Review comments'.
-        If 'delete own comments' is enabled, requires 'Edit comments'.
+        """Returns true if current user has the 'Delete comments'
+        permission.
         """
         return getSecurityManager().checkPermission('Delete comments',
                                                     aq_inner(reply))
@@ -482,6 +482,12 @@ class CommentsViewlet(ViewletBase):
         settings = registry.forInterface(IDiscussionSettings, check=False)
         return settings.edit_comment_enabled
 
+    def delete_own_comment_allowed(self):
+        # Check if delete own comments is allowed in the registry
+        registry = queryUtility(IRegistry)
+        settings = registry.forInterface(IDiscussionSettings, check=False)
+        return settings.delete_own_comment_enabled
+
     def show_commenter_image(self):
         # Check if showing commenter image is enabled in the registry
         registry = queryUtility(IRegistry)

plone/app/discussion/browser/controlpanel.py

@@ -54,6 +54,8 @@ class DiscussionSettingsEditForm(controlpanel.RegistryEditForm):
             SingleCheckBoxFieldWidget
         self.fields['edit_comment_enabled'].widgetFactory = \
             SingleCheckBoxFieldWidget
+        self.fields['delete_own_comment_enabled'].widgetFactory = \
+            SingleCheckBoxFieldWidget
         self.fields['anonymous_comments'].widgetFactory = \
             SingleCheckBoxFieldWidget
         self.fields['show_commenter_image'].widgetFactory = \
@@ -130,6 +132,9 @@ class DiscussionSettingsControlPanel(controlpanel.ControlPanelFormWrapper):
         if settings.edit_comment_enabled:
             output.append("edit_comment_enabled")
 
+        if settings.delete_own_comment_enabled:
+            output.append("delte_own_comment_enabled")
+
         # Anonymous comments
         if settings.anonymous_comments:
             output.append("anonymous_comments")

plone/app/discussion/browser/javascripts/controlpanel.js

@@ -41,6 +41,7 @@
                 $('#formfield-form-widgets-anonymous_comments'),
                 $('#formfield-form-widgets-moderation_enabled'),
                 $('#formfield-form-widgets-edit_comment_enabled'),
+                $('#formfield-form-widgets-delete_own_comment_enabled'),
                 $('#formfield-form-widgets-text_transform'),
                 $('#formfield-form-widgets-captcha'),
                 $('#formfield-form-widgets-show_commenter_image'),
@@ -54,6 +55,7 @@
                 $('#formfield-form-widgets-anonymous_comments'),
                 $('#formfield-form-widgets-moderation_enabled'),
                 $('#formfield-form-widgets-edit_comment_enabled'),
+                $('#formfield-form-widgets-delete_own_comment_enabled'),
                 $('#formfield-form-widgets-text_transform'),
                 $('#formfield-form-widgets-captcha'),
                 $('#formfield-form-widgets-show_commenter_image'),

plone/app/discussion/browser/moderation.py

@@ -117,8 +117,8 @@ class DeleteComment(BrowserView):
         return self.context.REQUEST.RESPONSE.redirect(came_from)
 
     def can_delete(self, reply):
-        """By default requires 'Review comments'.
-        If 'delete own comments' is enabled, requires 'Edit comments'.
+        """Returns true if current user has the 'Delete comments'
+        permission.
         """
         return getSecurityManager().checkPermission('Delete comments',
                                                     aq_inner(reply))
@@ -133,7 +133,7 @@ class DeleteOwnComment(DeleteComment):
     """
 
     def could_delete(self, comment=None):
-        """returns true if the comment could be deleted if it had no replies."""
+        """Returns true if the comment could be deleted if it had no replies."""
         sm = getSecurityManager()
         comment = comment or aq_inner(self.context)
         userid = sm.getUser().getId()
@@ -150,7 +150,7 @@ class DeleteOwnComment(DeleteComment):
         if self.can_delete():
             super(DeleteOwnComment, self).__call__()
         else:
-            raise Unauthorized("Your not allowed to delete this comment.")
+            raise Unauthorized("You're not allowed to delete this comment.")
 
 
 class PublishComment(BrowserView):