Add the lti.gradeChangeNotify post message

tsugiproject · Jun 10, 2024 · a2dc131 · a2dc131
1 parent 5851f26
commit a2dc131
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Showing 2 changed files with 22 additions and 5 deletions.
diff --git a/src/Core/Result.php b/src/Core/Result.php
@@ -389,6 +389,9 @@ public function gradeSend($grade, $row=false, &$debug_log=false, $extra=false) {
                 if ( is_array($debug_log) )  $debug_log[] = $msg;
                 error_log($msg);
             }
+
+            // Send notification
+            $this->session_put('lti.gradeChangeNotify', true);
         } else {
             $msg = 'Grade failure '.$grade.' id='.$USER->id.' via '.$GradeSendTransport;
             if ( is_array($debug_log) )  $debug_log[] = $msg;

diff --git a/src/UI/Output.php b/src/UI/Output.php
@@ -616,12 +616,26 @@ public static function handleHeartBeat($cookie)
     }
 
     function footerEnd() {
-        $end = "\n</div></body>\n</html>\n";
-        if ( $this->buffer ) {
-            return $end;
-        } else {
-            echo($end);
+        ob_start();
+
+        if ( $this->session_get('lti.gradeChangeNotify') ) {
+?>
+<script>
+            if ( typeof lti_gradeChangeNotify === 'function' ) {
+                console.debug('Tsugi sending lti.gradeChangeNotify');
+                lti_gradeChangeNotify();
+            }
+</script>
+<?php
+            $this->session_forget('lti.gradeChangeNotify');
         }
+
+        echo("\n</div></body>\n</html>\n");
+
+        $ob_output = ob_get_contents();
+        ob_end_clean();
+        if ( $this->buffer ) return $ob_output;
+        echo($ob_output);
     }
 
     function footer() {