Class yii\bootstrap4\Tabs

Inheritanceyii\bootstrap4\Tabs » yii\bootstrap4\Widget » yii\base\Widget
Uses Traitsyii\bootstrap4\BootstrapWidgetTrait
Source Code https://github.com/yiisoft/yii2-bootstrap4/blob/master/src/Tabs.php

Tabs renders a Tab bootstrap javascript component.

For example:

echo Tabs::widget([
    'items' => [
        [
            'label' => 'One',
            'content' => 'Anim pariatur cliche...',
            'active' => true
        ],
        [
            'label' => 'Two',
            'content' => 'Anim pariatur cliche...',
            'headerOptions' => [...],
            'options' => ['id' => 'myveryownID'],
        ],
        [
            'label' => 'Example',
            'url' => 'http://www.example.com',
        ],
        [
            'label' => 'Dropdown',
            'items' => [
                 [
                     'label' => 'DropdownA',
                     'content' => 'DropdownA, Anim pariatur cliche...',
                 ],
                 [
                     'label' => 'DropdownB',
                     'content' => 'DropdownB, Anim pariatur cliche...',
                 ],
                 [
                     'label' => 'External Link',
                     'url' => 'http://www.example.com',
                 ],
            ],
        ],
    ],
]);

See also:

Public Properties

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Property Type Description Defined By
$clientEvents array The event handlers for the underlying Bootstrap JS plugin. yii\bootstrap4\BootstrapWidgetTrait
$clientOptions array The options for the underlying Bootstrap JS plugin. yii\bootstrap4\BootstrapWidgetTrait
$dropdownClass string Name of a class to use for rendering dropdowns withing this widget. yii\bootstrap4\Tabs
$encodeLabels boolean Whether the labels for header items should be HTML-encoded. yii\bootstrap4\Tabs
$headerOptions array List of HTML attributes for the header container tags. yii\bootstrap4\Tabs
$itemOptions array List of HTML attributes for the item container tags. yii\bootstrap4\Tabs
$items array List of tabs in the tabs widget. yii\bootstrap4\Tabs
$linkOptions array List of HTML attributes for the tab header link tags. yii\bootstrap4\Tabs
$navType string Specifies the Bootstrap tab styling. yii\bootstrap4\Tabs
$options array The HTML attributes for the widget container tag. yii\bootstrap4\Widget
$panes array Tab panes (contents) yii\bootstrap4\Tabs
$renderTabContent boolean Whether to render the tab-content container and its content. yii\bootstrap4\Tabs
$tabContentOptions array List of HTML attributes for the tab-content container. yii\bootstrap4\Tabs

Protected Properties

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Property Type Description Defined By

Public Methods

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Method Description Defined By
getView() yii\bootstrap4\BootstrapWidgetTrait
init() Initializes the widget. yii\bootstrap4\Tabs
renderPanes() Renders tab panes. yii\bootstrap4\Tabs
run() yii\bootstrap4\Tabs

Protected Methods

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Method Description Defined By
activateFirstVisibleTab() Sets the first visible tab as active. yii\bootstrap4\Tabs
hasActiveTab() yii\bootstrap4\Tabs
prepareItems() Renders tab items as specified on $items. yii\bootstrap4\Tabs
registerClientEvents() Registers JS event handlers that are listed in $clientEvents. yii\bootstrap4\BootstrapWidgetTrait
registerPlugin() Registers a specific Bootstrap plugin and the related events yii\bootstrap4\BootstrapWidgetTrait

Property Details

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$dropdownClass public property

Name of a class to use for rendering dropdowns withing this widget. Defaults to yii\bootstrap4\Dropdown.

public string $dropdownClass 'yii\bootstrap4\Dropdown'
$encodeLabels public property

Whether the labels for header items should be HTML-encoded.

public boolean $encodeLabels true
$headerOptions public property

List of HTML attributes for the header container tags. This will be overwritten by the "headerOptions" set in individual $items.

See also \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.

public array $headerOptions = []
$itemOptions public property

List of HTML attributes for the item container tags. This will be overwritten by the "options" set in individual $items. The following special options are recognized:

  • tag: string, defaults to "div", the tag name of the item container tags.

See also \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.

public array $itemOptions = []
$items public property

List of tabs in the tabs widget. Each array element represents a single tab with the following structure:

  • label: string, required, the tab header label.
  • encode: bool, optional, whether this label should be HTML-encoded. This param will override global $this->encodeLabels param.
  • headerOptions: array, optional, the HTML attributes of the tab header.
  • linkOptions: array, optional, the HTML attributes of the tab header link tags.
  • content: string, optional, the content (HTML) of the tab pane.
  • url: string, optional, an external URL. When this is specified, clicking on this tab will bring the browser to this URL. This option is available since version 2.0.4.
  • options: array, optional, the HTML attributes of the tab pane container.
  • active: bool, optional, whether this item tab header and pane should be active. If no item is marked as 'active' explicitly - the first one will be activated.
  • visible: bool, optional, whether the item tab header and pane should be visible or not. Defaults to true.
  • disabled: bool, optional, whether the item tab header and pane should be disabled or not. Defaults to false.
  • items: array, optional, can be used instead of content to specify a dropdown items configuration array. Each item can hold three extra keys, besides the above ones:
    • active: bool, optional, whether the item tab header and pane should be visible or not.
    • content: string, required if items is not set. The content (HTML) of the tab pane.
    • options: optional, array, the HTML attributes of the tab content container.
public array $items = []
$linkOptions public property

List of HTML attributes for the tab header link tags. This will be overwritten by the "linkOptions" set in individual $items.

See also \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.

public array $linkOptions = []
$navType public property

Specifies the Bootstrap tab styling.

public string $navType 'nav-tabs'
$panes protected property

Tab panes (contents)

protected array $panes = []
$renderTabContent public property

Whether to render the tab-content container and its content. You may set this property to be false so that you can manually render tab-content yourself in case your tab contents are complex.

public boolean $renderTabContent true
$tabContentOptions public property

List of HTML attributes for the tab-content container. This will always contain the CSS class tab-content.

See also \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.

Method Details

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activateFirstVisibleTab() protected method

Sets the first visible tab as active.

This method activates the first tab that is visible and not explicitly set to inactive ('active' => false).

protected void activateFirstVisibleTab ( )

                protected function activateFirstVisibleTab()
{
    foreach ($this->items as $i => $item) {
        $active = ArrayHelper::getValue($item, 'active', null);
        $visible = ArrayHelper::getValue($item, 'visible', true);
        $disabled = ArrayHelper::getValue($item, 'disabled', false);
        if ($visible && $active !== false && $disabled !== true) {
            $this->items[$i]['active'] = true;
            return;
        }
    }
}

            
getView() public abstract method

Defined in: yii\bootstrap4\BootstrapWidgetTrait::getView()

See also \yii\base\Widget::getView().

public abstract \yii\web\View getView ( )
return \yii\web\View

The view object that can be used to render views or view files.

                abstract function getView();

            
hasActiveTab() protected method

protected boolean hasActiveTab ( )
return boolean

If there's active tab defined

                protected function hasActiveTab()
{
    foreach ($this->items as $item) {
        if (isset($item['active']) && $item['active'] === true) {
            return true;
        }
    }
    return false;
}

            
init() public method

Initializes the widget.

This method will register the bootstrap asset bundle. If you override this method, make sure you call the parent implementation first.

public void init ( )

                public function init()
{
    parent::init();
    Html::addCssClass($this->options, ['widget' => 'nav', $this->navType]);
    Html::addCssClass($this->tabContentOptions, ['panel' => 'tab-content']);
}

            
prepareItems() protected method

Renders tab items as specified on $items.

protected void prepareItems ( &$items, $prefix '' )
$items array
$prefix string
throws \yii\base\InvalidConfigException

                protected function prepareItems(&$items, $prefix = '')
{
    if (!$this->hasActiveTab()) {
        $this->activateFirstVisibleTab();
    }
    foreach ($items as $n => $item) {
        $options = array_merge($this->itemOptions, ArrayHelper::getValue($item, 'options', []));
        $options['id'] = ArrayHelper::getValue($options, 'id', $this->options['id'] . $prefix . '-tab' . $n);
        unset($items[$n]['options']['id']); // @see https://github.com/yiisoft/yii2-bootstrap4/issues/108#issuecomment-465219339
        if (!ArrayHelper::remove($item, 'visible', true)) {
            continue;
        }
        if (!array_key_exists('label', $item)) {
            throw new InvalidConfigException("The 'label' option is required.");
        }
        $selected = ArrayHelper::getValue($item, 'active', false);
        $disabled = ArrayHelper::getValue($item, 'disabled', false);
        $headerOptions = ArrayHelper::getValue($item, 'headerOptions', $this->headerOptions);
        if (isset($item['items'])) {
            $this->prepareItems($items[$n]['items'], '-dd' . $n);
            continue;
        } else {
            ArrayHelper::setValue($items[$n], 'options', $headerOptions);
            if (!isset($item['url'])) {
                ArrayHelper::setValue($items[$n], 'url', '#' . $options['id']);
                ArrayHelper::setValue($items[$n], 'linkOptions.data.toggle', 'tab');
                ArrayHelper::setValue($items[$n], 'linkOptions.role', 'tab');
                ArrayHelper::setValue($items[$n], 'linkOptions.aria-controls', $options['id']);
                if (!$disabled) {
                    ArrayHelper::setValue($items[$n], 'linkOptions.aria-selected', $selected ? 'true' : 'false');
                }
            } else {
                continue;
            }
        }
        Html::addCssClass($options, ['widget' => 'tab-pane']);
        if ($selected) {
            Html::addCssClass($options, ['activate' => 'active']);
        }
        if ($this->renderTabContent) {
            $tag = ArrayHelper::remove($options, 'tag', 'div');
            $this->panes[] = Html::tag($tag, isset($item['content']) ? $item['content'] : '', $options);
        }
    }
}

            
registerClientEvents() protected method

Defined in: yii\bootstrap4\BootstrapWidgetTrait::registerClientEvents()

Registers JS event handlers that are listed in $clientEvents.

protected void registerClientEvents ( )

                protected function registerClientEvents()
{
    if (!empty($this->clientEvents)) {
        $id = $this->options['id'];
        $js = [];
        foreach ($this->clientEvents as $event => $handler) {
            $js[] = "jQuery('#$id').on('$event', $handler);";
        }
        $this->getView()->registerJs(implode("\n", $js));
    }
}

            
registerPlugin() protected method

Defined in: yii\bootstrap4\BootstrapWidgetTrait::registerPlugin()

Registers a specific Bootstrap plugin and the related events

protected void registerPlugin ( $name )
$name string

The name of the Bootstrap plugin

                protected function registerPlugin($name)
{
    $view = $this->getView();
    BootstrapPluginAsset::register($view);
    $id = $this->options['id'];
    if ($this->clientOptions !== false) {
        $options = empty($this->clientOptions) ? '' : Json::htmlEncode($this->clientOptions);
        $js = "jQuery('#$id').$name($options);";
        $view->registerJs($js);
    }
    $this->registerClientEvents();
}

            
renderPanes() public method

Renders tab panes.

public string renderPanes ( $panes )
$panes array
return string

The rendering result.

                public function renderPanes($panes)
{
    return $this->renderTabContent ? "\n" . Html::tag('div', implode("\n", $panes), $this->tabContentOptions) : '';
}

            
run() public method

public void run ( )
throws \yii\base\InvalidConfigException
throws Exception

                public function run()
{
    $this->registerPlugin('tab');
    $this->prepareItems($this->items);
    return Nav::widget([
            'dropdownClass' => $this->dropdownClass,
            'options' => ArrayHelper::merge(['role' => 'tablist'], $this->options),
            'items' => $this->items,
            'encodeLabels' => $this->encodeLabels,
        ]) . $this->renderPanes($this->panes);
}