/**
  * Renders tab items as specified on [[items]].
  * @return string the rendering result.
  * @throws InvalidConfigException.
  */
 protected function renderItems()
 {
     $headers = [];
     $panes = [];
     if (!$this->hasActiveTab() && !empty($this->items)) {
         $this->items[0]['active'] = true;
     }
     foreach ($this->items as $n => $item) {
         if (!ArrayHelper::remove($item, 'visible', true)) {
             continue;
         }
         if (!array_key_exists('label', $item)) {
             throw new InvalidConfigException("The 'label' option is required.");
         }
         $encodeLabel = isset($item['encode']) ? $item['encode'] : $this->encodeLabels;
         $label = $encodeLabel ? Html::encode($item['label']) : $item['label'];
         $headerOptions = array_merge($this->headerOptions, ArrayHelper::getValue($item, 'headerOptions', []));
         $linkOptions = array_merge($this->linkOptions, ArrayHelper::getValue($item, 'linkOptions', []));
         if (isset($item['items'])) {
             $label .= ' <b class="caret"></b>';
             Html::addCssClass($headerOptions, ['widget' => 'dropdown']);
             if ($this->renderDropdown($n, $item['items'], $panes)) {
                 Html::addCssClass($headerOptions, 'active');
             }
             Html::addCssClass($linkOptions, ['widget' => 'dropdown-toggle']);
             $linkOptions['data-toggle'] = 'dropdown';
             $header = Html::a($label, "#", $linkOptions) . "\n" . Dropdown::widget(['items' => $item['items'], 'clientOptions' => false, 'view' => $this->getView()]);
         } else {
             $options = array_merge($this->itemOptions, ArrayHelper::getValue($item, 'options', []));
             $options['id'] = ArrayHelper::getValue($options, 'id', $this->options['id'] . '-tab' . $n);
             Html::addCssClass($options, ['widget' => 'tab-pane']);
             if (ArrayHelper::remove($item, 'active')) {
                 Html::addCssClass($options, 'active');
                 Html::addCssClass($headerOptions, 'active');
             }
             if (isset($item['url'])) {
                 $header = Html::a($label, $item['url'], $linkOptions);
             } else {
                 $linkOptions['data-toggle'] = 'tab';
                 $header = Html::a($label, '#' . $options['id'], $linkOptions);
             }
             if ($this->renderTabContent) {
                 $panes[] = Html::tag('div', isset($item['content']) ? $item['content'] : '', $options);
             }
         }
         $headers[] = Html::tag('li', $header, $headerOptions);
     }
     return Html::tag('ul', implode("\n", $headers), $this->options) . ($this->renderTabContent ? "\n" . Html::tag('div', implode("\n", $panes), ['class' => 'tab-content']) : '');
 }
 /**
  * Renders menu items.
  * @param array $items the menu items to be rendered
  * @param array $options the container HTML attributes
  * @return string the rendering result.
  * @throws InvalidConfigException if the label option is not specified in one of the items.
  */
 protected function renderItems($items, $options = [])
 {
     $lines = [];
     foreach ($items as $item) {
         if (isset($item['visible']) && !$item['visible']) {
             continue;
         }
         if (is_string($item)) {
             $lines[] = $item;
             continue;
         }
         if (!array_key_exists('label', $item)) {
             throw new InvalidConfigException("The 'label' option is required.");
         }
         $encodeLabel = isset($item['encode']) ? $item['encode'] : $this->encodeLabels;
         $label = $encodeLabel ? Html::encode($item['label']) : $item['label'];
         $itemOptions = ArrayHelper::getValue($item, 'options', []);
         $linkOptions = ArrayHelper::getValue($item, 'linkOptions', []);
         $linkOptions['tabindex'] = '-1';
         $url = array_key_exists('url', $item) ? $item['url'] : null;
         if (empty($item['items'])) {
             if ($url === null) {
                 $content = $label;
                 Html::addCssClass($itemOptions, ['widget' => 'dropdown-header']);
             } else {
                 $content = Html::a($label, $url, $linkOptions);
             }
         } else {
             $submenuOptions = $this->submenuOptions;
             if (isset($item['submenuOptions'])) {
                 $submenuOptions = array_merge($submenuOptions, $item['submenuOptions']);
             }
             $content = Html::a($label, $url === null ? '#' : $url, $linkOptions) . $this->renderItems($item['items'], $submenuOptions);
             Html::addCssClass($itemOptions, ['widget' => 'dropdown-submenu']);
         }
         $lines[] = Html::tag('li', $content, $itemOptions);
     }
     return Html::tag('ul', implode("\n", $lines), $options);
 }
 /**
  * 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'] = $id;
         Html::addCssClass($options, ['widget' => 'panel-collapse', 'collapse' => 'collapse']);
         $encodeLabel = isset($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', $headerToggle, ['class' => 'panel-title']);
         if (is_string($item['content']) || is_object($item['content'])) {
             $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 {
             throw new InvalidConfigException('The "content" option should be a string, array or object.');
         }
     } 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", $group);
 }
 /**
  * Renders previous and next control buttons.
  * @throws InvalidConfigException if [[controls]] is invalid.
  */
 public function renderControls()
 {
     if (isset($this->controls[0], $this->controls[1])) {
         return Html::a($this->controls[0], '#' . $this->options['id'], ['class' => 'left carousel-control', 'data-slide' => 'prev']) . "\n" . Html::a($this->controls[1], '#' . $this->options['id'], ['class' => 'right carousel-control', 'data-slide' => 'next']);
     } elseif ($this->controls === false) {
         return '';
     } else {
         throw new InvalidConfigException('The "controls" property must be either false or an array of two elements.');
     }
 }
 /**
  * Initializes the widget.
  */
 public function init()
 {
     parent::init();
     $this->clientOptions = false;
     if (empty($this->options['class'])) {
         Html::addCssClass($this->options, ['navbar', 'navbar-default']);
     } else {
         Html::addCssClass($this->options, ['widget' => 'navbar']);
     }
     if (empty($this->options['role'])) {
         $this->options['role'] = 'navigation';
     }
     $options = $this->options;
     $tag = ArrayHelper::remove($options, 'tag', 'nav');
     echo Html::beginTag($tag, $options);
     if ($this->renderInnerContainer) {
         if (!isset($this->innerContainerOptions['class'])) {
             Html::addCssClass($this->innerContainerOptions, 'container');
         }
         echo Html::beginTag('div', $this->innerContainerOptions);
     }
     echo Html::beginTag('div', ['class' => 'navbar-header']);
     if (!isset($this->containerOptions['id'])) {
         $this->containerOptions['id'] = "{$this->options['id']}-collapse";
     }
     echo $this->renderToggleButton();
     if ($this->brandLabel !== false) {
         Html::addCssClass($this->brandOptions, ['widget' => 'navbar-brand']);
         echo Html::a($this->brandLabel, $this->brandUrl === false ? Yii::$app->homeUrl : $this->brandUrl, $this->brandOptions);
     }
     echo Html::endTag('div');
     Html::addCssClass($this->containerOptions, ['collapse' => 'collapse', 'widget' => 'navbar-collapse']);
     $options = $this->containerOptions;
     $tag = ArrayHelper::remove($options, 'tag', 'div');
     echo Html::beginTag($tag, $options);
 }
 /**
  * Renders a widget's item.
  * @param string|array $item the item to render.
  * @return string the rendering result.
  * @throws InvalidConfigException
  */
 public function renderItem($item)
 {
     if (is_string($item)) {
         return $item;
     }
     if (!isset($item['label'])) {
         throw new InvalidConfigException("The 'label' option is required.");
     }
     $encodeLabel = isset($item['encode']) ? $item['encode'] : $this->encodeLabels;
     $label = $encodeLabel ? Html::encode($item['label']) : $item['label'];
     $options = ArrayHelper::getValue($item, 'options', []);
     $items = ArrayHelper::getValue($item, 'items');
     $url = ArrayHelper::getValue($item, 'url', '#');
     $linkOptions = ArrayHelper::getValue($item, 'linkOptions', []);
     if (isset($item['active'])) {
         $active = ArrayHelper::remove($item, 'active', false);
     } else {
         $active = $this->isItemActive($item);
     }
     if ($items !== null) {
         $linkOptions['data-toggle'] = 'dropdown';
         Html::addCssClass($options, ['widget' => 'dropdown']);
         Html::addCssClass($linkOptions, ['widget' => 'dropdown-toggle']);
         if ($this->dropDownCaret !== '') {
             $label .= ' ' . $this->dropDownCaret;
         }
         if (is_array($items)) {
             if ($this->activateItems) {
                 $items = $this->isChildActive($items, $active);
             }
             $items = $this->renderDropdown($items, $item);
         }
     }
     if ($this->activateItems && $active) {
         Html::addCssClass($options, 'active');
     }
     return Html::tag('li', Html::a($label, $url, $linkOptions) . $items, $options);
 }