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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\bootstrap;
use yii\base\InvalidConfigException;
/**
* ToggleButtonGroup allows rendering form inputs Checkbox/Radio toggle button groups.
*
* You can use this widget in an [[yii\bootstrap\ActiveForm|ActiveForm]] using the [[yii\widgets\ActiveField::widget()|widget()]]
* method, for example like this:
*
* ```php
* <?= $form->field($model, 'item_id')->widget(\yii\bootstrap\ToggleButtonGroup::classname(), [
* // configure additional widget properties here
* ]) ?>
* ```
*
* @see http://getbootstrap.com/javascript/#buttons-checkbox-radio
*
* @author Paul Klimov <klimov.paul@gmail.com>
* @since 2.0.6
*/
class ToggleButtonGroup extends InputWidget
{
/**
* @var string input type, can be:
* - 'checkbox'
* - 'radio'
*/
public $type;
/**
* @var array the data item used to generate the checkboxes.
* The array values are the labels, while the array keys are the corresponding checkbox or radio values.
*/
public $items = [];
/**
* @var array, the HTML attributes for the label (button) tag.
* @see Html::checkbox()
* @see Html::radio()
*/
public $labelOptions = [];
/**
* @var boolean whether the items labels should be HTML-encoded.
*/
public $encodeLabels = true;
/**
* @inheritdoc
*/
public function init()
{
parent::init();
$this->registerPlugin('button');
Html::addCssClass($this->options, 'btn-group');
$this->options['data-toggle'] = 'buttons';
}
/**
* @inheritdoc
*/
public function run()
{
if (!isset($this->options['item'])) {
$this->options['item'] = [$this, 'renderItem'];
}
switch ($this->type) {
case 'checkbox':
return Html::activeCheckboxList($this->model, $this->attribute, $this->items, $this->options);
case 'radio':
return Html::activeRadioList($this->model, $this->attribute, $this->items, $this->options);
default:
throw new InvalidConfigException("Unsupported type '{$this->type}'");
}
}
/**
* Default callback for checkbox/radio list item rendering.
* @param integer $index item index.
* @param string $label item label.
* @param string $name input name.
* @param boolean $checked whether value is checked or not.
* @param string $value input value.
* @return string generated HTML.
* @see Html::checkbox()
* @see Html::radio()
*/
public function renderItem($index, $label, $name, $checked, $value)
{
$labelOptions = $this->labelOptions;
Html::addCssClass($labelOptions, 'btn');
if ($checked) {
Html::addCssClass($labelOptions, 'active');
}
$type = $this->type;
if ($this->encodeLabels) {
$label = Html::encode($label);
}
return Html::$type($name, $checked, ['label' => $label, 'labelOptions' => $labelOptions, 'value' => $value]);
}
}
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