Merge branch 'B3995ExtraButtonLockCheckbox' into 'master'

Implements #3995 partly: CheckBox and Radio can now be locked.

See merge request !210

extension/Classes/Core/Helper/HelperFormElement.php

@@ -423,14 +423,27 @@ EOF;
         if (!$skip && HelperFormElement::booleParameter($formElement[FE_INPUT_EXTRA_BUTTON_LOCK] ?? '-')) {
             $formElement[FE_MODE] = FE_MODE_READONLY;
 
-            $extraButton .= <<<EOF
-            <button class="btn btn-info"
-                    onclick="$('#$id').prop('readonly',!$('#$id').prop('readonly'))">
-                <span class="glyphicon glyphicon-lock" aria-hidden="true"></span>
-            </button>
+            switch ($formElement[FE_TYPE]) {
+                case FE_TYPE_CHECKBOX:
+                case FE_TYPE_RADIO:
+                    $extraButton .= <<<EOF
+                    <button class="btn btn-info"
+                            onclick="$('[id^=$id]').parent('label').toggleClass('qfq-disabled')">
+                        <span class="glyphicon glyphicon-lock" aria-hidden="true"></span>
+                    </button>
 EOF;
-        }
+                    break;
+                default:
+                    $extraButton .= <<<EOF
+                    <button class="btn btn-info"
+                            onclick="$('#$id').prop('readonly',!$('#$id').prop('readonly'))">
+                        <span class="glyphicon glyphicon-lock" aria-hidden="true"></span>
+                    </button>
+EOF;
+                    break;
 
+            }
+        }
         // PASSWORD
 //        if (!$skip && isset($formElement[FE_INPUT_EXTRA_BUTTON_PASSWORD])) {
         if (!$skip && HelperFormElement::booleParameter($formElement[FE_INPUT_EXTRA_BUTTON_PASSWORD] ?? '-')) {