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vendor/yiisoft/yii2-jui/DatePickerLanguageAsset.php

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+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\jui;
+
+use Yii;
+use yii\web\AssetBundle;
+
+/**
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @since 2.0
+ */
+class DatePickerLanguageAsset extends AssetBundle
+{
+    public $sourcePath = '@bower/jquery-ui';
+    /**
+     * @var boolean whether to automatically generate the needed language js files.
+     * If this is true, the language js files will be determined based on the actual usage of [[DatePicker]]
+     * and its language settings. If this is false, you should explicitly specify the language js files via [[js]].
+     */
+    public $autoGenerate = true;
+    /**
+     * @var string language to register translation file for
+     */
+    public $language;
+    /**
+     * @inheritdoc
+     */
+    public $depends = [
+        'yii\jui\JuiAsset',
+    ];
+
+
+    /**
+     * @inheritdoc
+     */
+    public function registerAssetFiles($view)
+    {
+        if ($this->autoGenerate) {
+            $language = $this->language;
+            $fallbackLanguage = substr($this->language, 0, 2);
+            if ($fallbackLanguage !== $this->language && !file_exists(Yii::getAlias($this->sourcePath . "/ui/i18n/datepicker-{$language}.js"))) {
+                $language = $fallbackLanguage;
+            }
+            $this->js[] = "ui/i18n/datepicker-$language.js";
+        }
+        parent::registerAssetFiles($view);
+    }
+}