"Enable comment moderation" setting added to the discussion control panel. Just a proof of concept so far. Not fully implemented yet. No tests.

svn path=/plone.app.discussion/trunk/; revision=46249

plone/app/discussion/browser/controlpanel.py

@@ -40,6 +40,8 @@ class DiscussionSettingsEditForm(controlpanel.RegistryEditForm):
         super(DiscussionSettingsEditForm, self).updateFields()
         self.fields['globally_enabled'].widgetFactory = \
             SingleCheckBoxFieldWidget
+        self.fields['moderation_enabled'].widgetFactory = \
+            SingleCheckBoxFieldWidget
         self.fields['anonymous_comments'].widgetFactory = \
             SingleCheckBoxFieldWidget
         self.fields['show_commenter_image'].widgetFactory = \
@@ -97,6 +99,8 @@ class DiscussionSettingsControlPanel(controlpanel.ControlPanelFormWrapper):
         if settings.globally_enabled:
             output.append("globally_enabled")
         
+        # Comment moderation
+        
         # Anonymous comments
         if settings.anonymous_comments:
             output.append("anonymous_comments")
@@ -128,3 +132,30 @@ class DiscussionSettingsControlPanel(controlpanel.ControlPanelFormWrapper):
         if mailhost and email:
             return False
         return True
+
+def notify_configuration_changed(event):
+    """Event subscriber that is called every time the configuration changed.
+    """
+    from zope.app.component.hooks import getSite
+    portal = getSite()
+    wftool = getToolByName(portal, 'portal_workflow', None)
+    from plone.registry.interfaces import IRecordModifiedEvent
+    if IRecordModifiedEvent.providedBy(event):
+        # Discussion control panel setting changed
+        if event.record.fieldName == 'moderation_enabled':
+            # Moderation enabled has changed
+            if event.record.value == True:
+                # Enable moderation workflow
+                wftool.setChainForPortalTypes(('Discussion Item',), 
+                                              'comment_review_workflow')                
+            else:
+                # Disable moderation workflow
+                wftool.setChainForPortalTypes(('Discussion Item',), 
+                                              'one_state_workflow')
+            
+    from plone.app.controlpanel.interfaces import IConfigurationChangedEvent
+    if IConfigurationChangedEvent.providedBy(event):
+        # Types control panel setting changed
+        # XXX: Todo!!!
+        pass
+

plone/app/discussion/interfaces.py

@@ -44,6 +44,22 @@ class IDiscussionSettings(Interface):
         default=False,
         )
     
+    moderation_enabled = schema.Bool(
+        title=_(u"label_moderation_enabled",
+                default="Enable comment moderation"),
+        description=_(u"help_moderation_enabled",
+                default=u"If selected, comments will enter a 'Pending' state "
+                         "in which they are invisible to the public. A user "
+                         "with the 'Review comments' permission ('Reviewer' or "
+                         "'Manager') can approve comments to make them visible "
+                         "to the public. If you want to enable a custom "
+                         "comment workflow, you have to go to the types "
+                         "control panel."),
+        required=False,
+        default=False,
+        )
+
+
     text_transform = schema.Choice(
         title=_(u"label_text_transform",
                 default="Comment text transform"),

plone/app/discussion/subscribers.zcml

@@ -88,4 +88,14 @@
 		  
     </configure>
 
+    <subscriber
+        for="plone.app.controlpanel.interfaces.IConfigurationChangedEvent"
+        handler=".browser.controlpanel.notify_configuration_changed"
+        />
+
+    <subscriber
+        for="plone.registry.interfaces.IRecordModifiedEvent"
+        handler=".browser.controlpanel.notify_configuration_changed"
+        />        
+
 </configure>

plone/app/discussion/tests/test_controlpanel.py

@@ -90,5 +90,21 @@ class RegistryTest(PloneTestCase):
     #    self.assertEquals(self.registry['plone.app.discussion.interfaces.' +
     #        'IDiscussionSettings.user_notification_enabled'], False)
 
+
+class ConfigurationChangedSubscriberTest(PloneTestCase):
+
+    layer = DiscussionLayer
+
+    def afterSetUp(self):
+        self.loginAsPortalOwner()
+        # Set up the registry
+        self.registry = Registry()
+        self.registry.registerInterface(IDiscussionSettings)
+    
+    def todo(self):
+        # XXX: Todo!!!
+        pass
+
+        
 def test_suite():
     return unittest.defaultTestLoader.loadTestsFromName(__name__)