Try to limit wall of text with derivative messages

includes/derivatives.inc

@@ -96,7 +96,19 @@ function islandora_derivative_logging(array $logging_results) {
   foreach ($logging_results as $result) {
     foreach ($result['messages'] as $message) {
       if ($message['type'] === 'dsm') {
-        drupal_set_message(filter_xss(format_string($message['message'], isset($message['message_sub']) ? $message['message_sub'] : array())), isset($message['severity']) ? $message['severity'] : 'status');
+        if (isset($message['severity']) && $message['severity'] != 'status') {
+          drupal_set_message(filter_xss(format_string($message['message'], isset($message['message_sub']) ? $message['message_sub'] : array())), $message['severity']);
+        }
+        else {
+          if (!isset($_SESSION['islandora_derivative_messages'])) {
+            $_SESSION['islandora_derivative_messages'] = array();
+          }
+          $_SESSION['islandora_derivative_messages'][] = array(
+            'message' => filter_xss(format_string($message['message'], isset($message['message_sub']) ? $message['message_sub'] : array())),
+            'severity' => 'status',
+          );
+          drupal_set_message(l(t('Derivatives successfully created.'), 'islandora/event-status'), 'status', FALSE);
+        }
       }
       else {
         // We know what we are doing here. Passing through the translated

includes/utilities.inc

@@ -924,3 +924,22 @@ function islandora_sanitize_input_for_valid_xml($input, $replacement = '') {
   $input = preg_replace('/[^\x9\xA\xD\x20-\x{D7FF}\x{E000}-\x{FFFD}\x{10000}-\x{10FFFF}]/u', $replacement, $input);
   return $input;
 }
+
+/**
+ * Page callback for session status messages to be sent to drupal_set_message().
+ *
+ * @return array
+ *   Render array containing markup.
+ */
+function islandora_event_status() {
+  $results = FALSE;
+  if (isset($_SESSION['islandora_derivative_messages'])) {
+    foreach ($_SESSION['islandora_derivative_messages'] as $message) {
+      drupal_set_message($message['message'], $message['severity']);
+      $results = TRUE;
+    }
+    unset($_SESSION['islandora_derivative_messages']);
+  }
+  $text = ($results) ? t('The status messages above will be deleted after viewing this page.') : t('No messages to display.');
+  return array('#markup' => $text);
+}

islandora.module

@@ -322,6 +322,13 @@ function islandora_menu() {
     'access arguments' => array(ISLANDORA_VIEW_OBJECTS, 2),
     'load arguments' => array(2),
   );
+  $items['islandora/event-status'] = array(
+    'title' => 'Event Status',
+    'page callback' => 'islandora_event_status',
+    'type' => MENU_CALLBACK,
+    'access callback' => TRUE,
+    'file' => 'includes/utilities.inc',
+  );
   $items[ISLANDORA_CONTENT_MODELS_AUTOCOMPLETE] = array(
     'title' => 'Autocomplete callback',
     'description' => 'Autocomplete a Fedora content model PID.',