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242 lines
8.0 KiB
242 lines
8.0 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; |
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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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* Nav renders a nav HTML component. |
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* |
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* For example: |
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* |
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* ```php |
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* echo Nav::widget([ |
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* 'items' => [ |
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* [ |
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* 'label' => 'Home', |
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* 'url' => ['site/index'], |
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* 'linkOptions' => [...], |
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* ], |
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* [ |
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* 'label' => 'Dropdown', |
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* 'items' => [ |
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* ['label' => 'Level 1 - Dropdown A', 'url' => '#'], |
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* '<li class="divider"></li>', |
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* '<li class="dropdown-header">Dropdown Header</li>', |
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* ['label' => 'Level 1 - Dropdown B', 'url' => '#'], |
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* ], |
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* ], |
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* ], |
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* ]); |
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* ``` |
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* |
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* Note: Multilevel dropdowns beyond Level 1 are not supported in Bootstrap 3. |
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* |
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* @see http://getbootstrap.com/components/#dropdowns |
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* @see http://getbootstrap.com/components/#nav |
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* |
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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 Nav extends Widget |
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{ |
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/** |
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* @var array list of items in the nav widget. Each array element represents a single |
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* menu item which can be either a string or an array with the following structure: |
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* |
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* - label: string, required, the nav item label. |
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* - url: optional, the item's URL. Defaults to "#". |
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* - visible: boolean, optional, whether this menu item is visible. Defaults to true. |
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* - linkOptions: array, optional, the HTML attributes of the item's link. |
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* - options: array, optional, the HTML attributes of the item container (LI). |
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* - active: boolean, optional, whether the item should be on active state or not. |
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* - items: array|string, optional, the configuration array for creating a [[Dropdown]] widget, |
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* or a string representing the dropdown menu. Note that Bootstrap does not support sub-dropdown menus. |
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* |
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* If a menu item is a string, it will be rendered directly without HTML encoding. |
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*/ |
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public $items = []; |
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/** |
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* @var boolean whether the nav items labels should be HTML-encoded. |
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*/ |
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public $encodeLabels = true; |
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/** |
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* @var boolean whether to automatically activate items according to whether their route setting |
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* matches the currently requested route. |
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* @see isItemActive |
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*/ |
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public $activateItems = true; |
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/** |
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* @var boolean whether to activate parent menu items when one of the corresponding child menu items is active. |
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*/ |
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public $activateParents = false; |
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/** |
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* @var string the route used to determine if a menu item is active or not. |
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* If not set, it will use the route of the current request. |
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* @see params |
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* @see isItemActive |
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*/ |
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public $route; |
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/** |
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* @var array the parameters used to determine if a menu item is active or not. |
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* If not set, it will use `$_GET`. |
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* @see route |
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* @see isItemActive |
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*/ |
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public $params; |
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/** |
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* Initializes the widget. |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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if ($this->route === null && Yii::$app->controller !== null) { |
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$this->route = Yii::$app->controller->getRoute(); |
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} |
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if ($this->params === null) { |
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$this->params = Yii::$app->request->getQueryParams(); |
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} |
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Html::addCssClass($this->options, 'nav'); |
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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 $this->renderItems(); |
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BootstrapAsset::register($this->getView()); |
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} |
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/** |
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* Renders widget items. |
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*/ |
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public function renderItems() |
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{ |
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$items = []; |
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foreach ($this->items as $i => $item) { |
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if (isset($item['visible']) && !$item['visible']) { |
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unset($items[$i]); |
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continue; |
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} |
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$items[] = $this->renderItem($item); |
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} |
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return Html::tag('ul', implode("\n", $items), $this->options); |
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} |
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/** |
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* Renders a widget's item. |
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* @param string|array $item the item to render. |
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* @return string the rendering result. |
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* @throws InvalidConfigException |
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*/ |
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public function renderItem($item) |
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{ |
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if (is_string($item)) { |
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return $item; |
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} |
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if (!isset($item['label'])) { |
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throw new InvalidConfigException("The 'label' option is required."); |
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} |
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$encodeLabel = isset($item['encode']) ? $item['encode'] : $this->encodeLabels; |
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$label = $encodeLabel ? Html::encode($item['label']) : $item['label']; |
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$options = ArrayHelper::getValue($item, 'options', []); |
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$items = ArrayHelper::getValue($item, 'items'); |
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$url = ArrayHelper::getValue($item, 'url', '#'); |
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$linkOptions = ArrayHelper::getValue($item, 'linkOptions', []); |
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if (isset($item['active'])) { |
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$active = ArrayHelper::remove($item, 'active', false); |
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} else { |
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$active = $this->isItemActive($item); |
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} |
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if ($items !== null) { |
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$linkOptions['data-toggle'] = 'dropdown'; |
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Html::addCssClass($options, 'dropdown'); |
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Html::addCssClass($linkOptions, 'dropdown-toggle'); |
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$label .= ' ' . Html::tag('b', '', ['class' => 'caret']); |
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if (is_array($items)) { |
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if ($this->activateItems) { |
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$items = $this->isChildActive($items, $active); |
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} |
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$items = Dropdown::widget([ |
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'items' => $items, |
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'encodeLabels' => $this->encodeLabels, |
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'clientOptions' => false, |
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'view' => $this->getView(), |
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]); |
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} |
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} |
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if ($this->activateItems && $active) { |
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Html::addCssClass($options, 'active'); |
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} |
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return Html::tag('li', Html::a($label, $url, $linkOptions) . $items, $options); |
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} |
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/** |
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* Check to see if a child item is active optionally activating the parent. |
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* @param array $items @see items |
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* @param boolean $active should the parent be active too |
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* @return array @see items |
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*/ |
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protected function isChildActive($items, &$active) |
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{ |
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foreach ($items as $i => $child) { |
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if (ArrayHelper::remove($items[$i], 'active', false) || $this->isItemActive($child)) { |
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Html::addCssClass($items[$i]['options'], 'active'); |
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if ($this->activateParents) { |
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$active = true; |
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} |
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} |
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} |
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return $items; |
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} |
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/** |
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* Checks whether a menu item is active. |
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* This is done by checking if [[route]] and [[params]] match that specified in the `url` option of the menu item. |
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* When the `url` option of a menu item is specified in terms of an array, its first element is treated |
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* as the route for the item and the rest of the elements are the associated parameters. |
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* Only when its route and parameters match [[route]] and [[params]], respectively, will a menu item |
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* be considered active. |
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* @param array $item the menu item to be checked |
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* @return boolean whether the menu item is active |
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*/ |
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protected function isItemActive($item) |
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{ |
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if (isset($item['url']) && is_array($item['url']) && isset($item['url'][0])) { |
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$route = $item['url'][0]; |
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if ($route[0] !== '/' && Yii::$app->controller) { |
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$route = Yii::$app->controller->module->getUniqueId() . '/' . $route; |
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} |
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if (ltrim($route, '/') !== $this->route) { |
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return false; |
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} |
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unset($item['url']['#']); |
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if (count($item['url']) > 1) { |
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foreach (array_splice($item['url'], 1) as $name => $value) { |
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if ($value !== null && (!isset($this->params[$name]) || $this->params[$name] != $value)) { |
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return false; |
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} |
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} |
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} |
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return true; |
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} |
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return false; |
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} |
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}
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