Add discrete templates for multicheckbox elements.

This will let people modify the HTML used for checkboxes without
effecting the rest of the FormHelper.

src/View/Helper/FormHelper.php

@@ -111,6 +111,8 @@ class FormHelper extends Helper
             'label' => '<label{{attrs}}>{{text}}</label>',
             'nestingLabel' => '{{hidden}}<label{{attrs}}>{{input}}{{text}}</label>',
             'legend' => '<legend>{{text}}</legend>',
+            'multicheckboxTitle' => '<legend>{{text}}</legend>',
+            'multicheckboxWrapper' => '<fieldset{{attrs}}>{{content}}</fieldset>',
             'option' => '<option value="{{value}}"{{attrs}}>{{text}}</option>',
             'optgroup' => '<optgroup label="{{label}}"{{attrs}}>{{content}}</optgroup>',
             'select' => '<select name="{{name}}"{{attrs}}>{{content}}</select>',

src/View/Widget/MultiCheckboxWidget.php

@@ -50,8 +50,8 @@ class MultiCheckboxWidget implements WidgetInterface
      * - `checkboxWrapper` Renders the containing div/element for
      *   a checkbox and its label. Accepts the `input`, and `label`
      *   variables.
-     * - `fieldset` Renders the fieldset for grouped inputs.
-     * - `legend` Renders the legend element for grouped inputs.
+     * - `multicheckboxWrapper` Renders a wrapper around grouped inputs.
+     * - `multicheckboxTitle` Renders the title element for grouped inputs.
      *
      * @param \Cake\View\StringTemplate $templates Templates list.
      * @param \Cake\View\Widget\LabelWidget $label Label widget instance.
@@ -127,9 +127,9 @@ class MultiCheckboxWidget implements WidgetInterface
             // Grouped inputs in a fieldset.
             if (is_string($key) && is_array($val) && !isset($val['text'], $val['value'])) {
                 $inputs = $this->_renderInputs(['options' => $val] + $data, $context);
-                $legend = $this->_templates->format('legend', ['text' => $key]);
-                $out[] = $this->_templates->format('fieldset', [
-                    'content' => $legend . implode('', $inputs)
+                $title = $this->_templates->format('multicheckboxTitle', ['text' => $key]);
+                $out[] = $this->_templates->format('multicheckboxWrapper', [
+                    'content' => $title . implode('', $inputs)
                 ]);
                 continue;
             }

tests/TestCase/View/Widget/MultiCheckboxWidgetTest.php

@@ -37,8 +37,8 @@ class MultiCheckboxWidgetTest extends TestCase
             'checkbox' => '<input type="checkbox" name="{{name}}" value="{{value}}"{{attrs}}>',
             'label' => '<label{{attrs}}>{{text}}</label>',
             'checkboxWrapper' => '<div class="checkbox">{{input}}{{label}}</div>',
-            'fieldset' => '<fieldset{{attrs}}>{{content}}</fieldset>',
-            'legend' => '<legend>{{text}}</legend>',
+            'multicheckboxWrapper' => '<fieldset{{attrs}}>{{content}}</fieldset>',
+            'multicheckboxTitle' => '<legend>{{text}}</legend>',
         ];
         $this->templates = new StringTemplate($templates);
         $this->context = $this->getMock('Cake\View\Form\ContextInterface');