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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;
/**
* Nav renders a nav HTML component.
*
* For example:
*
* ```php
* echo Nav::widget(array(
* 'items' => array(
* array(
* 'label' => 'Home',
* 'url' => '/',
* 'linkOptions' => array(...),
* 'active' => true,
* ),
* array(
* 'label' => 'Dropdown',
* 'items' => array(
* array(
* 'label' => 'Level 1 -DropdownA',
* 'url' => '#',
* 'items' => array(
* array(
* 'label' => 'Level 2 -DropdownA',
* 'url' => '#',
* ),
* ),
* ),
* array(
* 'label' => 'Level 1 -DropdownB',
* 'url' => '#',
* ),
* ),
* ),
* ),
* ));
* ```
*
* @see http://twitter.github.io/bootstrap/components.html#nav
* @author Antonio Ramirez <amigo.cobos@gmail.com>
* @since 2.0
*/
class Nav extends Widget
{
/**
* @var array list of items in the nav widget. Each array element represents a single
* menu item with the following structure:
*
* - label: string, required, the nav item label.
* - url: optional, the item's URL. Defaults to "#".
* - linkOptions: array, optional, the HTML attributes of the item's link.
* - options: array, optional, the HTML attributes of the item container (LI).
* - active: boolean, optional, whether the item should be on active state or not.
* - dropdown: array|string, optional, the configuration array for creating a [[Dropdown]] widget,
* or a string representing the dropdown menu. Note that Bootstrap does not support sub-dropdown menus.
*/
public $items = array();
/**
* @var boolean whether the nav items labels should be HTML-encoded.
*/
public $encodeLabels = true;
/**
* Initializes the widget.
*/
public function init()
{
parent::init();
Html::addCssClass($this->options, 'nav');
}
/**
* Renders the widget.
*/
public function run()
{
echo $this->renderItems();
$this->getView()->registerAssetBundle('yii/bootstrap');
}
/**
* Renders widget items.
*/
public function renderItems()
{
$items = array();
foreach ($this->items as $item) {
$items[] = $this->renderItem($item);
}
return Html::tag('ul', implode("\n", $items), $this->options);
}
/**
* Renders a widget's item.
* @param mixed $item the item to render.
* @return string the rendering result.
* @throws InvalidConfigException
*/
public function renderItem($item)
{
if (is_string($item)) {
return $item;
}
if (!isset($item['label'])) {
throw new InvalidConfigException("The 'label' option is required.");
}
$label = $this->encodeLabels ? Html::encode($item['label']) : $item['label'];
$options = ArrayHelper::getValue($item, 'options', array());
$items = ArrayHelper::getValue($item, 'items');
$url = Html::url(ArrayHelper::getValue($item, 'url', '#'));
$linkOptions = ArrayHelper::getValue($item, 'linkOptions', array());
if (ArrayHelper::getValue($item, 'active')) {
Html::addCssClass($options, 'active');
}
if ($items !== null) {
$linkOptions['data-toggle'] = 'dropdown';
Html::addCssClass($options, 'dropdown');
Html::addCssClass($urlOptions, 'dropdown-toggle');
$label .= ' ' . Html::tag('b', '', array('class' => 'caret'));
if (is_array($items)) {
$items = Dropdown::widget(array(
'items' => $items,
'clientOptions' => false,
));
}
}
return Html::tag('li', Html::a($label, $url, $linkOptions) . $items, $options);
}
}