/**
     * 設定画面にフィールドを表示(共通項目)
     * 
     * @param int $group_key
     * @param int $field_key
     */
    public function display_options($group_key, $field_key)
    {
        ?>
		<tr>
			<th><?php 
        esc_html_e('Name', 'smart-custom-fields');
        ?>
<span class="<?php 
        echo esc_attr(SCF_Config::PREFIX . 'require');
        ?>
">*</span></th>
			<td>
				<input type="text"
					name="<?php 
        echo esc_attr($this->get_field_name_in_setting($group_key, $field_key, 'name'));
        ?>
"
					size="30"
					class="<?php 
        echo esc_attr(SCF_Config::PREFIX . 'field-name');
        ?>
"
					value="<?php 
        echo esc_attr($this->get('name'));
        ?>
"
				/>
			</td>
		</tr>
		<tr>
			<th><?php 
        esc_html_e('Label', 'smart-custom-fields');
        ?>
</th>
			<td>
				<input type="text"
					name="<?php 
        echo esc_attr($this->get_field_name_in_setting($group_key, $field_key, 'label'));
        ?>
"
					size="30"
					class="<?php 
        echo esc_attr(SCF_Config::PREFIX . 'field-label');
        ?>
"
					value="<?php 
        echo esc_attr($this->get('label'));
        ?>
"
				/>
			</td>
		</tr>
		<?php 
        $fields = SCF::get_form_field_instances();
        foreach ($fields as $Field) {
            if ($Field->get_attribute('type') === $this->get_attribute('type')) {
                foreach ($this->options as $key => $value) {
                    $Field->set($key, $value);
                }
            }
            $Field->_display_field_options($group_key, $field_key);
        }
    }