WPDKUIControlsLayout::html PHP Method

    public function html()
    {
        // Buffering...
        WPDKHTML::startCompress();
        foreach ($this->_cla as $key => $value) {
            ?>

      <?php 
            if (empty($key) || empty($value)) {
                continue;
            }
            ?>

      <?php 
            // Check for collapse fieldset
            $collpase_class = '';
            if ('+' == substr($key, 0, 1)) {
                $collpase_class = 'wpdk-fieldset-collapse wpdk-fieldset-collapse-open';
                $key = ltrim($key, '+');
            } elseif ('-' == substr($key, 0, 1)) {
                $collpase_class = 'wpdk-fieldset-collapse wpdk-fieldset-collapse-close';
                $key = ltrim($key, '-');
            }
            ?>

      <fieldset class="wpdk-form-fieldset wpdk-ui-control <?php 
            echo $collpase_class;
            ?>
">
        <legend><?php 
            echo $key;
            ?>
</legend>
        <div class="wpdk-fieldset-container">
          <?php 
            $this->_processRows($value);
            ?>
        </div>
      </fieldset>

    <?php 
        }
        return WPDKHTML::endCompress();
    }

 /**
  * Display
  *
  * @brief Display
  */
 public function draw()
 {
     // Create a nonce key
     $nonce = md5($this->id);
     $input_hidden_nonce = new WPDKHTMLTagInput('', $nonce, $nonce);
     $input_hidden_nonce->type = WPDKHTMLTagInputType::HIDDEN;
     $input_hidden_nonce->value = wp_create_nonce($this->id);
     $input_hidden_class = new WPDKHTMLTagInput('', 'wpdk_preferences_class');
     $input_hidden_class->type = WPDKHTMLTagInputType::HIDDEN;
     $input_hidden_class->value = get_class($this->preferences);
     $input_hidden_branch = new WPDKHTMLTagInput('', 'wpdk_preferences_branch');
     $input_hidden_branch->type = WPDKHTMLTagInputType::HIDDEN;
     $input_hidden_branch->value = $this->branch_property;
     $layout = new WPDKUIControlsLayout($this->fields($this->branch));
     $form = new WPDKHTMLTagForm($input_hidden_nonce->html() . $input_hidden_class->html() . $input_hidden_branch->html() . $layout->html() . $this->buttonsUpdateReset());
     $form->name = 'wpdk_preferences_view_form-' . $this->branch_property;
     $form->id = $form->name;
     $form->class[] = 'wpdk-form wpdk-preferences-view-' . $this->branch_property;
     $form->method = 'post';
     $form->action = '';
     /**
      * Filter the form object for this branch view.
      *
      * @param WPDKHTMLTagForm $form An instance of WPDKHTMLTagForm class.
      */
     $form = apply_filters('wpdk_preferences_branch_form', $form);
     /**
      * Fires before display the view. You can add your custome feedback message.
      */
     do_action('wpdk_preferences_feedback-' . $this->branch_property);
     $form->display();
 }