MDL-47494 ddimageortext: NOBUG added feedback for student when they h…

…ave not dragged an image to each

drop zone.

question/type/ddimageortext/lang/en/qtype_ddimagetoimage.php

@@ -48,6 +48,7 @@
 $string['infinite'] = 'Infinite';
 $string['label'] = 'Label';
 $string['nolabel'] = 'No label text';
+$string['pleasedraganimagetoeachdropregion'] = 'Your answer is not complete, please drag an image to each drop region.';
 $string['previewarea'] = 'Preview area -';
 $string['previewareaheader'] = 'Preview';
 $string['previewareamessage'] = '<ul><li>Select a background image file.</li><li>Select draggable images.</li><li>And define drop zones by selecting an image that the student must drag to the drop zone and drag it to where the student should drag it too.</li></ul>';

question/type/ddimageortext/question.php

@@ -99,6 +99,12 @@ public function check_file_access($qa, $options, $component, $filearea, $args, $
                                                                 $filearea, $args, $forcedownload);
         }
     }
+    public function get_validation_error(array $response) {
+        if ($this->is_complete_response($response)) {
+            return '';
+        }
+        return get_string('pleasedraganimagetoeachdropregion', 'qtype_ddimagetoimage');
+    }
 }
 
 

question/type/ddimageortext/renderer.php

@@ -119,6 +119,11 @@ public function formulation_and_controls(question_attempt $qa,
                                         $sendtojs,
                                         true,
                                         $jsmodule);
+        if ($qa->get_state() == question_state::$invalid) {
+            $output .= html_writer::nonempty_tag('div',
+                                        $question->get_validation_error($qa->get_last_qt_data()),
+                                        array('class' => 'validationerror'));
+        }
         return $output;
     }