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95 lines
2.8 KiB
95 lines
2.8 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\bootstrap; |
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use yii\base\InvalidConfigException; |
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use yii\helpers\ArrayHelper; |
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use yii\helpers\Html; |
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/** |
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* Dropdown renders a Bootstrap dropdown menu component. |
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* |
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* @see http://twitter.github.io/bootstrap/javascript.html#dropdowns |
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* @author Antonio Ramirez <amigo.cobos@gmail.com> |
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* @since 2.0 |
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*/ |
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class Dropdown extends Widget |
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{ |
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/** |
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* @var array list of menu items in the dropdown. Each array element represents a single |
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* menu with the following structure: |
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* - label: string, required, the label of the item link |
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* - url: string, optional, the url of the item link. Defaults to "#". |
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* - linkOptions: array, optional, the HTML attributes of the item link. |
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* - options: array, optional, the HTML attributes of the item. |
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* - items: array, optional, the dropdown items configuration array. if `items` is set, then `url` of the parent |
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* item will be ignored and automatically set to "#" |
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* |
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* @see https://github.com/twitter/bootstrap/issues/5050#issuecomment-11741727 |
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*/ |
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public $items = array(); |
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/** |
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* @var boolean whether the labels for header items should be HTML-encoded. |
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*/ |
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public $encodeLabels = true; |
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/** |
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* Initializes the widget. |
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* If you override this method, make sure you call the parent implementation first. |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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$this->addCssClass($this->options, 'dropdown-menu'); |
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} |
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/** |
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* Renders the widget. |
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*/ |
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public function run() |
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{ |
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echo $this->renderItems($this->items); |
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$this->registerPlugin('dropdown'); |
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} |
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/** |
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* Renders menu items. |
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* @param array $items the menu items to be rendered |
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* @return string the rendering result. |
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* @throws InvalidConfigException if the label option is not specified in one of the items. |
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*/ |
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protected function renderItems($items) |
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{ |
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$lines = array(); |
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foreach ($items as $item) { |
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if (is_string($item)) { |
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$lines[] = $item; |
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continue; |
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} |
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if (!isset($item['label'])) { |
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throw new InvalidConfigException("The 'label' option is required."); |
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} |
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$label = $this->encodeLabels ? Html::encode($item['label']) : $item['label']; |
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$options = ArrayHelper::getValue($item, 'options', array()); |
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$linkOptions = ArrayHelper::getValue($item, 'linkOptions', array()); |
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$linkOptions['tabindex'] = '-1'; |
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if (isset($item['items'])) { |
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$this->addCssClass($options, 'dropdown-submenu'); |
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$content = Html::a($label, '#', $linkOptions) . $this->renderItems($item['items']); |
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} else { |
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$content = Html::a($label, ArrayHelper::getValue($item, 'url', '#'), $linkOptions); |
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} |
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$lines[] = Html::tag('li', $content, $options); |
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} |
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return Html::tag('ul', implode("\n", $lines), $this->options); |
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} |
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}
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