Yii2 Bootstrap 3
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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;
use yii\helpers\ArrayHelper;
use yii\helpers\Html;
/**
* Collapse renders an accordion bootstrap javascript component.
*
* For example:
*
* ```php
* echo Collapse::widget([
* 'items' => [
* // equivalent to the above
* 'Collapsible Group Item #1' => [
* 'content' => 'Anim pariatur cliche...',
* // open its content by default
* 'contentOptions' => ['class' => 'in']
* ],
* // another group item
* 'Collapsible Group Item #2' => [
* 'content' => 'Anim pariatur cliche...',
* 'contentOptions' => [...],
* 'options' => [...],
* ],
* ]
* ]);
* ```
*
* @see http://twitter.github.io/bootstrap/javascript.html#collapse
* @author Antonio Ramirez <amigo.cobos@gmail.com>
* @since 2.0
*/
class Collapse extends Widget
{
/**
* @var array list of groups in the collapse widget. Each array element represents a single
* group with the following structure:
*
* ```php
* // item key is the actual group header
* 'Collapsible Group Item #1' => [
* // required, the content (HTML) of the group
* 'content' => 'Anim pariatur cliche...',
* // optional the HTML attributes of the content group
* 'contentOptions' => [],
* // optional the HTML attributes of the group
* 'options' => [],
* ]
* ```
*/
public $items = [];
/**
* Initializes the widget.
*/
public function init()
{
parent::init();
Html::addCssClass($this->options, 'panel-group');
}
/**
* Renders the widget.
*/
public function run()
{
echo Html::beginTag('div', $this->options) . "\n";
echo $this->renderItems() . "\n";
echo Html::endTag('div') . "\n";
$this->registerPlugin('collapse');
}
/**
* Renders collapsible items as specified on [[items]].
* @return string the rendering result
*/
public function renderItems()
{
$items = [];
$index = 0;
foreach ($this->items as $header => $item) {
$options = ArrayHelper::getValue($item, 'options', []);
Html::addCssClass($options, 'panel panel-default');
$items[] = Html::tag('div', $this->renderItem($header, $item, ++$index), $options);
}
return implode("\n", $items);
}
/**
* Renders a single collapsible item group
* @param string $header a label of the item group [[items]]
* @param array $item a single item from [[items]]
* @param integer $index the item index as each item group content must have an id
* @return string the rendering result
* @throws InvalidConfigException
*/
public function renderItem($header, $item, $index)
{
if (isset($item['content'])) {
$id = $this->options['id'] . '-collapse' . $index;
$options = ArrayHelper::getValue($item, 'contentOptions', []);
$options['id'] = $id;
Html::addCssClass($options, 'panel-collapse collapse');
$headerToggle = Html::a($header, '#' . $id, [
'class' => 'collapse-toggle',
'data-toggle' => 'collapse',
'data-parent' => '#' . $this->options['id']
]) . "\n";
$header = Html::tag('h4', $headerToggle, ['class' => 'panel-title']);
$content = Html::tag('div', $item['content'], ['class' => 'panel-body']) . "\n";
} else {
throw new InvalidConfigException('The "content" option is required.');
}
$group = [];
$group[] = Html::tag('div', $header, ['class' => 'panel-heading']);
$group[] = Html::tag('div', $content, $options);
return implode("\n", $group);
}
}