add hooks to the feedlist widget to give fine-grained control over feed links

EVENTS.txt

@@ -1086,3 +1086,19 @@ StartDeleteOwnNotice: when a user starts to delete their own notice
 EndDeleteOwnNotice: when a user has deleted their own notice
 - $user: the user doing the delete
 - $notice: the notice being deleted
+
+StartShowFeedLinkList: before showing the feed list in the sidebar
+- $action: action being executed
+- $feeds: list of feeds to show
+
+EndShowFeedLinkList: after showing the feed list in the sidebar
+- $action: action being executed
+- $feeds: list of feeds shown
+
+StartShowFeedLink: before showing an individual feed item
+- $action: action being executed
+- $feed: feed to show
+
+EndShowFeedLink: after showing an individual feed
+- $action: action being executed
+- $feed: feed to show

lib/feedlist.php

@@ -59,6 +59,8 @@ class FeedList extends Widget
 
     function show($feeds)
     {
+        if (Event::handle('StartShowFeedLinkList', array($this->action, &$feeds))) {
+            if (!empty($feeds)) {
                 $this->out->elementStart('div', array('id' => 'export_data',
                                                       'class' => 'section'));
                 $this->out->element('h2', null, _('Feeds'));
@@ -71,9 +73,13 @@ class FeedList extends Widget
                 $this->out->elementEnd('ul');
                 $this->out->elementEnd('div');
             }
+            Event::handle('EndShowFeedLinkList', array($this->action, &$feeds));
+        }
+    }
 
     function feedItem($feed)
     {
+        if (Event::handle('StartShowFeedLink', array($this->action, &$feed))) {
             $classname = null;
 
             switch ($feed->type) {
@@ -96,5 +102,7 @@ class FeedList extends Widget
                                            'title' => $feed->title),
                                 $feed->typeName());
             $this->out->elementEnd('li');
+            Event::handle('EndShowFeedLink', array($this->action, $feed));
+        }
     }
 }