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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;
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/**
* Collapse renders an accordion bootstrap javascript component.
*
* For example:
*
* ```php
* echo Collapse::widget([
* 'items' => [
* // equivalent to the above
* [
* 'label' => 'Collapsible Group Item #1',
* 'content' => 'Anim pariatur cliche...',
* // open its content by default
* 'contentOptions' => ['class' => 'in']
* ],
* // another group item
* [
* 'label' => 'Collapsible Group Item #1',
* 'content' => 'Anim pariatur cliche...',
* 'contentOptions' => [...],
* 'options' => [...],
* ],
* // if you want to swap out .panel-body with .list-group, you may use the following
* [
* 'label' => 'Collapsible Group Item #1',
* 'content' => [
* 'Anim pariatur cliche...',
* 'Anim pariatur cliche...'
* ],
* 'contentOptions' => [...],
* 'options' => [...],
* 'footer' => 'Footer' // the footer label in list-group
* ],
* ]
* ]);
* ```
*
* @see http://getbootstrap.com/javascript/#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:
*
* - label: string, required, the group header label.
* - encode: boolean, optional, whether this label should be HTML-encoded. This param will override
* global `$this->encodeLabels` param.
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* - content: array|string|object, required, the content (HTML) of the group
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* - options: array, optional, the HTML attributes of the group
* - contentOptions: optional, the HTML attributes of the group's content
*/
public $items = [];
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/**
* @var boolean whether the labels for header items should be HTML-encoded.
*/
public $encodeLabels = true;
/**
* Initializes the widget.
*/
public function init()
{
parent::init();
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Html::addCssClass($this->options, ['widget' => 'panel-group']);
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}
/**
* Renders the widget.
*/
public function run()
{
$this->registerPlugin('collapse');
return implode("\n", [
Html::beginTag('div', $this->options),
$this->renderItems(),
Html::endTag('div')
]) . "\n";
}
/**
* Renders collapsible items as specified on [[items]].
* @throws InvalidConfigException if label isn't specified
* @return string the rendering result
*/
public function renderItems()
{
$items = [];
$index = 0;
foreach ($this->items as $item) {
if (!array_key_exists('label', $item)) {
throw new InvalidConfigException("The 'label' option is required.");
}
$header = $item['label'];
$options = ArrayHelper::getValue($item, 'options', []);
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Html::addCssClass($options, ['panel' => 'panel', 'widget' => 'panel-default']);
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$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 (array_key_exists('content', $item)) {
$id = $this->options['id'] . '-collapse' . $index;
$options = ArrayHelper::getValue($item, 'contentOptions', []);
$options['id'] = $id;
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Html::addCssClass($options, ['widget' => 'panel-collapse', 'collapse' => 'collapse']);
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$encodeLabel = isset($item['encode']) ? $item['encode'] : $this->encodeLabels;
if ($encodeLabel) {
$header = Html::encode($header);
}
$headerToggle = Html::a($header, '#' . $id, [
'class' => 'collapse-toggle',
'data-toggle' => 'collapse',
'data-parent' => '#' . $this->options['id']
]) . "\n";
$header = Html::tag('h4', $headerToggle, ['class' => 'panel-title']);
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if (is_string($item['content']) || is_object($item['content'])) {
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$content = Html::tag('div', $item['content'], ['class' => 'panel-body']) . "\n";
} elseif (is_array($item['content'])) {
$content = Html::ul($item['content'], [
'class' => 'list-group',
'itemOptions' => [
'class' => 'list-group-item'
],
'encode' => false,
]) . "\n";
if (isset($item['footer'])) {
$content .= Html::tag('div', $item['footer'], ['class' => 'panel-footer']) . "\n";
}
} else {
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throw new InvalidConfigException('The "content" option should be a string, array or object.');
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}
} 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);
}
}
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