ButtonGroup.php

<?php

/**
 * @link    http://foundationize.com
 * @package shqear/yii2-foundation6
 * @version 1.0.0
 */

namespace shqear\foundation6;

use yii\helpers\Html;
use yii\helpers\ArrayHelper;

/**
 * Description of ButtonGroup
 *
 * @see http://foundation.zurb.com/docs/components/button_groups.html
 */
class ButtonGroup extends Widget
{
    /**
     * @var array list of buttons. Each array element represents a single button
     * which can be specified as a string or an array of the following structure:
     *
     * - label: string, required, the button label.
     * - url: string|array, optional, the url for the button link
     * - options: array, optional, the HTML attributes of the button.
     */
    public $buttons = [];

    /**
     * @var boolean whether to HTML-encode the button labels.
     */
    public $encodeLabels = true;

    /**
     * Initializes the widget.
     * If you override this method, make sure you call the parent implementation first.
     */
    public function init()
    {
        parent::init();
        Html::addCssClass($this->options, 'button-group');
    }

    /**
     * Renders the widget.
     */
    public function run()
    {
        echo Html::tag('ul', $this->renderButtons(), $this->options);
    }

    /**
     * Generates the buttons that compound the group as specified on [[buttons]].
     * @return string the rendering result.
     */
    protected function renderButtons()
    {
        $buttons = [];
        foreach ($this->buttons as $button) {
            if (is_array($button)) {
                $label = ArrayHelper::getValue($button, 'label');
                $url = ArrayHelper::getValue($button, 'url');
                $options = ArrayHelper::getValue($button, 'options');
                $button = Button::widget([
                    'label' => $label,
                    'url' => $url,
                    'options' => $options,
                    'encodeLabel' => $this->encodeLabels
                ]);
                $buttons[] = Html::tag('li', $button);
            } else {
                $buttons[] = Html::tag('li', $button);
            }
        }
        return implode("\n", $buttons);
    }
}