Delete a source.

sites/all/modules/feeds/includes/FeedsSource.inc

@@ -41,9 +41,14 @@ interface FeedsSourceInterface {
   public function sourceFormValidate(&$source_config);
 
   /**
-   * A source is being saved.
+   * A source is being deleted.
    */
   public function sourceSave(FeedsSource $source);
+
+  /**
+   * A source is being saved.
+   */
+  public function sourceDelete(FeedsSource $source);
 }
 
 /**
@@ -215,6 +220,11 @@ class FeedsSource extends FeedsConfigurable {
    * from database, does not delete configuration itself.
    */
   public function delete() {
+    // Alert implementers of FeedsSourceInterface to the fact that we're
+    // deleting.
+    foreach ($this->importer->plugin_types as $type) {
+      $this->importer->$type->sourceDelete($this);
+    }
     db_query('DELETE FROM {feeds_source} WHERE id = "%s" AND feed_nid = %d', $this->id, $this->feed_nid);
   }