refactored javascript to ES6 classes (#759)

assets/js/plugins/KimaiThemeInitializer.js

@@ -0,0 +1,48 @@
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/*!
+ * [KIMAI] KimaiThemeInitializer: initialize theme functionality
+ */
+
+import jQuery from 'jquery';
+import KimaiPlugin from '../KimaiPlugin';
+
+export default class KimaiThemeInitializer extends KimaiPlugin {
+
+    init() {
+        this.registerAutomaticAlertRemove('div.alert-success', 5000);
+    }
+
+    /**
+     * auto hide success messages, as they are just meant as user feedback and not as a permanent information
+     *
+     * @param {string} selector
+     * @param {integer} interval
+     */
+    registerAutomaticAlertRemove(selector, interval) {
+        const self = this;
+        this._alertRemoveHandler = setInterval(
+            function() {
+                self.hideAlert(selector);
+            },
+            interval
+        );
+    }
+
+    unregisterAutomaticAlertRemove() {
+        clearInterval(this._alertRemoveHandler);
+    }
+
+    /**
+     * @param {string} selector
+     */
+    hideAlert(selector) {
+        jQuery(selector).alert('close');
+    }
+
+}