user overlayService for template picker to fix bug with nested position relatve/fixed

src/Umbraco.Web.UI.Client/src/common/directives/components/umbgridselector.directive.js

@@ -1,7 +1,7 @@
 (function() {
     'use strict';
 
-    function GridSelector() {
+    function GridSelector(overlayService) {
 
         function link(scope, el, attr, ctrl) {
 
@@ -33,25 +33,26 @@
             };
 
             scope.openItemPicker = function($event){
-                scope.dialogModel = {
+                var dialogModel = {
                     view: "itempicker",
                     title: "Choose " + scope.itemLabel,
                     availableItems: scope.availableItems,
                     selectedItems: scope.selectedItems,
+                    position: "target",
                     event: $event,
-                    show: true,
                     submit: function(model) {
                         scope.selectedItems.push(model.selectedItem);
-
                         // if no default item - set item as default
                         if(scope.defaultItem === null) {
                             scope.setAsDefaultItem(model.selectedItem);
                         }
-
-                        scope.dialogModel.show = false;
-                        scope.dialogModel = null;
+                        overlayService.close();
+                    },
+                    close: function() {
+                      overlayService.close();
                     }
                 };
+                overlayService.open(dialogModel);
             };
 
             scope.setAsDefaultItem = function(selectedItem) {

src/Umbraco.Web.UI.Client/src/views/components/umb-grid-selector.html

@@ -33,11 +33,4 @@
         <small><localize key="general_all">Akk</localize> {{itemLabel}}s <localize key="grid_areAdded">are added</localize></small>
     </div>
 
-    <umb-overlay
-        ng-if="dialogModel.show"
-        model="dialogModel"
-        position="target"
-        view="dialogModel.view">
-    </umb-overlay>
-
 </div>