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<?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\helpers\Html;
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/**
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* NavBar renders a navbar HTML component.
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*
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* Any content enclosed between the [[begin()]] and [[end()]] calls of NavBar
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* is treated as the content of the navbar. You may use widgets such as [[Nav]]
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* or [[\yii\widgets\Menu]] to build up such content. For example,
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*
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* ```php
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* use yii\bootstrap\NavBar;
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* use yii\widgets\Menu;
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*
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* NavBar::begin(['brandLabel' => 'NavBar Test']);
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* echo Nav::widget([
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* 'items' => [
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* ['label' => 'Home', 'url' => ['/site/index']],
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* ['label' => 'About', 'url' => ['/site/about']],
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* ],
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* ]);
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* NavBar::end();
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* ```
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*
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* @see http://twitter.github.io/bootstrap/components.html#navbar
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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 NavBar extends Widget
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{
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/**
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* @var string the text of the brand. Note that this is not HTML-encoded.
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* @see http://twitter.github.io/bootstrap/components.html#navbar
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*/
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public $brandLabel;
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/**
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* @param array|string $url the URL for the brand's hyperlink tag. This parameter will be processed by [[Html::url()]]
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* and will be used for the "href" attribute of the brand link. Defaults to site root.
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*/
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public $brandUrl = '/';
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/**
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* @var array the HTML attributes of the brand link.
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*/
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public $brandOptions = [];
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/**
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* @var string text to show for screen readers for the button to toggle the navbar.
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*/
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public $screenReaderToggleText = 'Toggle navigation';
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/**
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* @var bool whether the navbar content should be included in a `container` div which adds left and right padding.
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* Set this to false for a 100% width navbar.
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*/
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public $padded = true;
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/**
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* Initializes the widget.
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*/
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public function init()
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{
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parent::init();
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$this->clientOptions = false;
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Html::addCssClass($this->options, 'navbar navbar-default');
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Html::addCssClass($this->brandOptions, 'navbar-brand');
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if (empty($this->options['role'])) {
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$this->options['role'] = 'navigation';
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}
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echo Html::beginTag('nav', $this->options);
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if ($this->padded) {
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echo Html::beginTag('div', ['class' => 'container']);
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}
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echo Html::beginTag('div', ['class' => 'navbar-header']);
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echo $this->renderToggleButton();
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if ($this->brandLabel !== null) {
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echo Html::a($this->brandLabel, $this->brandUrl, $this->brandOptions);
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}
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echo Html::endTag('div');
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echo Html::beginTag('div', ['class' => "collapse navbar-collapse navbar-{$this->options['id']}-collapse"]);
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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 Html::endTag('div');
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if ($this->padded) {
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echo Html::endTag('div');
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}
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echo Html::endTag('nav');
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BootstrapPluginAsset::register($this->getView());
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}
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/**
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* Renders collapsible toggle button.
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* @return string the rendering toggle button.
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*/
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protected function renderToggleButton()
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{
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$bar = Html::tag('span', '', ['class' => 'icon-bar']);
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$screenReader = '<span class="sr-only">'.$this->screenReaderToggleText.'</span>';
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return Html::button("{$screenReader}\n{$bar}\n{$bar}\n{$bar}", [
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'class' => 'navbar-toggle',
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'data-toggle' => 'collapse',
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'data-target' => ".navbar-{$this->options['id']}-collapse",
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]);
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}
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}
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