Confirmation output from the previous attempt

classes/combinator_grader_outcome.php

@@ -32,14 +32,15 @@ class qtype_coderunner_combinator_grader_outcome extends qtype_coderunner_testin
     // A list of the allowed attributes in the combinator template grader return value.
     public $allowedfields = array('fraction', 'prologuehtml', 'testresults', 'epiloguehtml',
                     'feedbackhtml', 'columnformats', 'showdifferences',
-                    'showoutputonly'
+                    'showoutputonly', 'attemptconfirmhtml'
         );
 
     public function __construct($isprecheck) {
         parent::__construct(1, 0, $isprecheck);
         $this->actualmark = 0;
         $this->epiloguehtml = null;
         $this->prologuehtml = null;
+	$this->attemptconfirmhtml = null;
         $this->testresults = null;
         $this->columnformats = null;
         $this->outputonly = false;
@@ -200,6 +201,10 @@ public function show_differences() {
                $this->showdifferences &&  isset($this->testresults);
     }
 
+    public function get_attempt_confirm() {
+        return empty($this->attemptconfirmhtml) ?
+	       '' : $this->attemptconfirmhtml;
+    }
 
     // Check that if a columnformats field is supplied
     // the number of entries is correct and that each entry is either '%s'

classes/testing_outcome.php

@@ -416,6 +416,10 @@ public function get_epilogue() {
         return '';
     }
 
+    public function get_attempt_confirm() {
+        return '';
+    }
+
     public function get_sourcecode_list() {
         return $this->sourcecodelist;
     }

renderer.php

@@ -209,6 +209,15 @@ public function formulation_and_controls(question_attempt $qa, question_display_
             $PAGE->requires->js_call_amd('qtype_coderunner/textareas', 'initQuestionTA', array($responsefieldid));
         }
 
+	// with the isoutputonly option, give feedback on the answer status here?
+	$toserialised = $qa->get_last_qt_var('_testoutcome');
+	if ($toserialised) {
+	    $outcome = unserialize($toserialised);
+	    if ($outcome !== false) {
+	         $qtext .= $outcome->get_attempt_confirm();
+            }
+	}
+
         return $qtext;
     }