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[arvados-workbench2.git] / src / components / tree / tree.tsx

diff --git a/src/components/tree/tree.tsx b/src/components/tree/tree.tsx
index 3a6447341024f53115559a9cbab9a9f11fb8c619..d8397d6673a7a9f2c30a95ee7e7f1c090f1a24d1 100644 (file)
--- a/src/components/tree/tree.tsx
+++ b/src/components/tree/tree.tsx
@@ -44,8 +44,8 @@ interface TreeProps<T> {
 }
 
 class Tree<T> extends React.Component<TreeProps<T> & WithStyles<CssRules>, {}> {
-    renderArrow (items: Array<TreeItem<T>> | undefined, arrowClass: string, isOpen: boolean){
-        return items && items.length > 0 ? <i className={`${arrowClass} ${isOpen ? "fas fa-caret-down" : `fas fa-caret-down ${this.props.classes.arrowRotate}`}`} /> : ''
+    renderArrow (items: boolean, arrowClass: string, open: boolean){
+        return <i className={`${arrowClass} ${open ? "fas fa-caret-down" : `fas fa-caret-down ${this.props.classes.arrowRotate}`}`} />
     }
     render(): ReactElement<any> {
         const level = this.props.level ? this.props.level : 0;
@@ -55,7 +55,7 @@ class Tree<T> extends React.Component<TreeProps<T> & WithStyles<CssRules>, {}> {
             {items && items.map((it: TreeItem<T>, idx: number) =>
              <div key={`item/${level}/${idx}`}>
                 <ListItem button onClick={() => toggleItem(it.id)} className={list} style={{paddingLeft: (level + 1) * 20}}>
-                    {this.renderArrow(it.items, it.active ? activeArrow : arrow, it.open)}
+                    {this.renderArrow(true, it.active ? activeArrow : arrow, it.open)}
                     {render(it, level)}
                 </ListItem>
                 {it.items && it.items.length > 0 &&