PasswordInput.php

<?php

/**
 * @package   yii2-password
 * @author    Kartik Visweswaran <kartikv2@gmail.com>
 * @copyright Copyright &copy; Kartik Visweswaran, Krajee.com, 2014 - 2016
 * @version   1.5.3
 */

namespace kartik\password;

use kartik\base\InputWidget;
use Yii;
use yii\helpers\Html;
use yii\helpers\ArrayHelper;

/**
 * PasswordInput widget is a wrapper for the JQuery Strength meter plugin by Krajee. The plugin converts a password
 * input into a widget with an advanced strength validation meter and toggle mask to show/hide the password. The
 * password strength is validated as you type.
 *
 * @author Kartik Visweswaran <kartikv2@gmail.com>
 * @since 1.0
 * @see http://plugins.krajee.com/strength-meter
 */
class PasswordInput extends InputWidget
{
    /**
     * @var string the password strength meter language. If not provided or no translation is available, this will
     *     default to `en` (US English).
     */
    public $language;

    /**
     * @var string the password input size. Defaults to medium size ('md'). Can be set 'lg' for large size or 'sm' for
     *     small size.
     */
    public $size = 'md';

    /**
     * @var string the toggle mask placement with respect to the password input. Should be 'left' or 'right'. Defaults
     *     to 'right'.
     */
    public $togglePlacement = 'right';

    /**
     * @inheritdoc
     */
    public $pluginName = 'strength';

    /**
     * @inheritdoc
     */
    public function run()
    {
        $this->initLanguage();
        if ($this->hasModel()) {
            $this->name = ArrayHelper::remove(
                $this->options,
                'name',
                Html::getInputName($this->model, $this->attribute)
            );
            $this->value = $this->model[$this->attribute];
        }
        echo $this->getInput('passwordInput');
        if (empty($this->pluginOptions['inputTemplate']) &&
            ($this->size === 'lg' || $this->size === 'sm' || $this->togglePlacement === 'left')
        ) {
            $this->pluginOptions['inputTemplate'] = $this->renderInputTemplate();
        }
        $this->registerAssets();
        parent::run();
    }

    /**
     * Renders the input template
     *
     * @return string
     */
    protected function renderInputTemplate()
    {
        $class = 'input-group';
        $content = '{input}<span class="input-group-addon">{toggle}</span>';
        if ($this->size === 'lg' || $this->size === 'sm') {
            $class .= ' input-group-' . $this->size;
        }
        if ($this->togglePlacement === 'left') {
            $content = '<span class="input-group-addon">{toggle}</span>{input}';
        }
        return "<div class='{$class}'>{$content}</div>";
    }

    /**
     * Registers the needed assets
     */
    public function registerAssets()
    {
        $view = $this->getView();
        $path = Yii::getAlias("@vendor/kartik-v/strength-meter");
        $this->setLanguage('strength-meter-', $path, 'js/locales');
        if (!empty($this->_langFile)) {
            PasswordInputAsset::register($view)->js[] = $this->_langFile;
        } else {
            PasswordInputAsset::register($view);
        }
        $this->registerPlugin($this->pluginName);
    }
}