refactor(mdTheme): use ngModelAttrsManipulator

Author: Kamil Kisiela

src/runs/md-theme-manipulator.js

@@ -1,40 +1,10 @@
-export default (formlyConfigProvider) => {
-
-    function addIfNotPresent(nodes, attr, val) {
-        angular.forEach(nodes, (node) => {
-            if (!node.getAttribute(attr)) {
-                node.setAttribute(attr, val)
-            }
-        });
-    }
+import {ngModelAttrsManipulator} from './../helpers/index.js';
 
-    function getNgModelNodes(node) {
-        const query = "[ng-model], [data-ng-model]";
-
-        return node.querySelectorAll(query)
+export default (formlyConfigProvider) => {
+  formlyConfigProvider.templateManipulators.preWrapper.push((template, options) => {
+    if (angular.isDefined(options.templateOptions.theme)) {
+      return ngModelAttrsManipulator(template, options, 'md-theme', options.templateOptions.theme);
     }
-
-    formlyConfigProvider.templateManipulators.preWrapper.push((template, options) => {
-        if (angular.isDefined(options.templateOptions.theme)) {
-            const node = document.createElement('div');
-            const skip = options.extras && options.extras.skipNgModelAttrsManipulator;
-
-            if (skip === true) {
-                return template
-            }
-            node.innerHTML = template;
-            const modelNodes = getNgModelNodes(node);
-
-            if (!modelNodes || !modelNodes.length) {
-                return template;
-            }
-
-            addIfNotPresent(modelNodes, 'md-theme', options.templateOptions.theme);
-
-            return node.innerHTML;
-
-        }
-        return template;
-    });
-
-}
+    return template;
+  });
+};