removing angular from render_complete (#20478)

src/ui/public/render_complete/directive.js

@@ -18,42 +18,15 @@
  */
 
 import { uiModules } from '../modules';
-
-const attributeName = 'data-render-complete';
+import { RenderCompleteHelper } from './render_complete_helper';
 
 uiModules
   .get('kibana')
   .directive('renderComplete', () => ({
     controller($scope, $element) {
       const el = $element[0];
+      const renderCompleteHelper = new RenderCompleteHelper(el);
 
-      const start = () => {
-        $element.attr(attributeName, false);
-        return true;
-      };
-
-      const complete = () => {
-        $element.attr(attributeName, true);
-        return true;
-      };
-
-      const teardown = () => {
-        el.removeEventListener('renderStart', start);
-        el.removeEventListener('renderComplete', complete);
-      };
-
-      const setup = () => {
-        $element.attr(attributeName, false);
-        el.addEventListener('renderStart', start);
-        el.addEventListener('renderComplete', complete);
-        $scope.$on('$destroy', teardown);
-      };
-
-      this.disable = () => {
-        $element.attr(attributeName, 'disabled');
-        teardown();
-      };
-
-      setup();
+      $scope.$on('$destroy', renderCompleteHelper.destroy);
     }
   }));

src/ui/public/render_complete/index.js

@@ -33,3 +33,5 @@ export function dispatchRenderComplete(el) {
 export function dispatchRenderStart(el) {
   dispatchCustomEvent(el, 'renderStart');
 }
+
+export * from './render_complete_helper';

src/ui/public/render_complete/render_complete_helper.js

@@ -0,0 +1,53 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+const attributeName = 'data-render-complete';
+
+export class RenderCompleteHelper {
+  constructor(element) {
+    this._element = element;
+    this.setup();
+  }
+
+  _start = () => {
+    this._element.setAttribute(attributeName, false);
+    return true;
+  };
+
+  _complete = () => {
+    this._element.setAttribute(attributeName, true);
+    return true;
+  };
+
+  destroy = () => {
+    this._element.removeEventListener('renderStart', this._start);
+    this._element.removeEventListener('renderComplete', this._complete);
+  };
+
+  setup = () => {
+    this._element.setAttribute(attributeName, false);
+    this._element.addEventListener('renderStart', this._start);
+    this._element.addEventListener('renderComplete', this._complete);
+  };
+
+  disable = () => {
+    this._element.setAttribute(attributeName, 'disabled');
+    this.destroy();
+  };
+}