/**
*
* @throws EE_Error
* @return string of html to display the field
*/
public function display()
{
if (!$this->_input instanceof EE_Form_Input_With_Options_Base) {
throw new EE_Error(sprintf(__('Cannot use Select Multiple Display Strategy with an input that doesn\'t have options', "event_espresso")));
}
$html = EEH_HTML::nl(0, 'select');
$html .= '<select multiple';
$html .= ' id="' . $this->_input->html_id() . '"';
$html .= ' name="' . $this->_input->html_name() . '[]"';
$class = $this->_input->required() ? $this->_input->required_css_class() . ' ' . $this->_input->html_class() : $this->_input->html_class();
$html .= ' class="' . $class . '"';
// add html5 required
$html .= $this->_input->required() ? ' required' : '';
$html .= ' style="' . $this->_input->html_style() . '"';
$html .= '>';
EE_Registry::instance()->load_helper('Array');
EEH_HTML::indent(1, 'select');
if (EEH_Array::is_multi_dimensional_array($this->_input->options())) {
throw new EE_Error(sprintf(__("Select multiple display strategy does not allow for nested arrays of options.", "event_espresso")));
} else {
$html .= $this->_display_options($this->_input->options());
}
$html .= EEH_HTML::nl(-1, 'select') . "</select>";
return $html;
}
/**
* Displays a flat list of options as option tags
* @param array $options
* @return string
*/
protected function _display_options($options)
{
$html = '';
EEH_HTML::indent(1, 'option');
foreach ($options as $value => $display_text) {
$unnormalized_value = $this->_input->get_normalization_strategy()->unnormalize_one($value);
$selected = $this->_check_if_option_selected($unnormalized_value) ? ' selected="selected"' : '';
$html .= EEH_HTML::nl(0, 'option') . '<option value="' . esc_attr($unnormalized_value) . '"' . $selected . '>' . $display_text . '</option>';
}
EEH_HTML::indent(-1, 'option');
return $html;
}
/**
* return a newline and tabs ("nl" stands for "new line")
*
* @param int $indent the number of tabs to ADD to the current indent (can be negative or zero)
* @param string $tag
* @return string - newline character plus # of indents passed (can be + or -)
*/
public static function nl($indent = 0, $tag = 'none')
{
$html = "\n";
EEH_HTML::indent($indent, $tag);
for ($x = 0; $x < EEH_HTML::$_indent[$tag]; $x++) {
$html .= "\t";
}
return $html;
}
