Refactor Movie index to use react-window

frontend/src/AddMovie/ImportMovie/Import/ImportMovie.js

@@ -18,6 +18,8 @@ class ImportMovie extends Component {
   constructor(props, context) {
     super(props, context);
 
+    this.scrollerRef = React.createRef();
+
     this.state = {
       allSelected: false,
       allUnselected: false,
@@ -27,13 +29,6 @@ class ImportMovie extends Component {
     };
   }
 
-  //
-  // Control
-
-  setScrollerRef = (ref) => {
-    this.setState({ scroller: ref });
-  };
-
   //
   // Listeners
 
@@ -88,16 +83,12 @@ class ImportMovie extends Component {
     const {
       allSelected,
       allUnselected,
-      selectedState,
-      scroller
+      selectedState
     } = this.state;
 
     return (
       <PageContent title={translate('ImportMovies')}>
-        <PageContentBody
-          registerScroller={this.setScrollerRef}
-          onScroll={this.onScroll}
-        >
+        <PageContentBody ref={this.scrollerRef} >
           {
             rootFoldersFetching ? <LoadingIndicator /> : null
           }
@@ -126,14 +117,14 @@ class ImportMovie extends Component {
             !rootFoldersFetching &&
             rootFoldersPopulated &&
             !!unmappedFolders.length &&
-            scroller ?
+            this.scrollerRef.current ?
               <ImportMovieTableConnector
                 rootFolderId={rootFolderId}
                 unmappedFolders={unmappedFolders}
                 allSelected={allSelected}
                 allUnselected={allUnselected}
                 selectedState={selectedState}
-                scroller={scroller}
+                scroller={this.scrollerRef.current}
                 onSelectAllChange={this.onSelectAllChange}
                 onSelectedChange={this.onSelectedChange}
                 onRemoveSelectedStateItem={this.onRemoveSelectedStateItem}