feat(gallery-web): add refresh indicator property to gallery

Author: samuelreichert

packages/pluggableWidgets/gallery-web/src/Gallery.xml

@@ -94,6 +94,10 @@
                         <translation lang="en_US">Load More</translation>
                     </translations>
                 </property>
+                <property key="refreshIndicator" type="boolean" defaultValue="false">
+                    <caption>Show refresh indicator</caption>
+                    <description>Show a refresh indicator when the data is being loaded.</description>
+                </property>
             </propertyGroup>
             <propertyGroup caption="Items">
                 <property key="showEmptyPlaceholder" type="enumeration" defaultValue="none">

packages/pluggableWidgets/gallery-web/typings/GalleryProps.d.ts

@@ -39,6 +39,7 @@ export interface GalleryContainerProps {
     showPagingButtons: ShowPagingButtonsEnum;
     pagingPosition: PagingPositionEnum;
     loadMoreButtonCaption?: DynamicValue<string>;
+    refreshIndicator: boolean;
     showEmptyPlaceholder: ShowEmptyPlaceholderEnum;
     emptyPlaceholder?: ReactNode;
     itemClass?: ListExpressionValue<string>;
@@ -80,6 +81,7 @@ export interface GalleryPreviewProps {
     showPagingButtons: ShowPagingButtonsEnum;
     pagingPosition: PagingPositionEnum;
     loadMoreButtonCaption: string;
+    refreshIndicator: boolean;
     showEmptyPlaceholder: ShowEmptyPlaceholderEnum;
     emptyPlaceholder: { widgetCount: number; renderer: ComponentType<{ children: ReactNode; caption?: string }> };
     itemClass: string;