Added central action for navigation

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

diff --git a/src/components/tree/tree.tsx b/src/components/tree/tree.tsx
index d8397d6673a7a9f2c30a95ee7e7f1c090f1a24d1..0e69554a6225bb7181b006c71db0186b583de6e2 100644 (file)
--- a/src/components/tree/tree.tsx
+++ b/src/components/tree/tree.tsx
@@ -8,8 +8,10 @@ import ListItem from "@material-ui/core/ListItem/ListItem";
 import { StyleRulesCallback, Theme, withStyles, WithStyles } from '@material-ui/core/styles';
 import { ReactElement } from "react";
 import Collapse from "@material-ui/core/Collapse/Collapse";
+import CircularProgress from '@material-ui/core/CircularProgress';
+import { inherits } from 'util';
 
-type CssRules = 'list' | 'activeArrow' | 'arrow' | 'arrowRotate';
+type CssRules = 'list' | 'activeArrow' | 'inactiveArrow' | 'arrowRotate' | 'arrowTransition' | 'loader' | 'arrowVisibility';
 
 const styles: StyleRulesCallback<CssRules> = (theme: Theme) => ({
     list: {
@@ -20,56 +22,82 @@ const styles: StyleRulesCallback<CssRules> = (theme: Theme) => ({
         color: '#4285F6',
         position: 'absolute',
     },
-    arrow: {
+    inactiveArrow: {
         position: 'absolute',
     },
+    arrowTransition: {
+        transition: 'all 0.1s ease',
+    },
     arrowRotate: {
+        transition: 'all 0.1s ease',
         transform: 'rotate(-90deg)',
+    },
+    arrowVisibility: {
+        opacity: 0,
+    },
+    loader: {
+        position: 'absolute',
+        transform: 'translate(0px)',
+        top: '3px'
     }
 });
 
+export enum TreeItemStatus {
+    Initial,
+    Pending,
+    Loaded
+}
+
 export interface TreeItem<T> {
     data: T;
     id: string;
     open: boolean;
     active: boolean;
+    status: TreeItemStatus;
+    toggled?: boolean;
     items?: Array<TreeItem<T>>;
 }
 
 interface TreeProps<T> {
     items?: Array<TreeItem<T>>;
     render: (item: TreeItem<T>, level?: number) => ReactElement<{}>;
-    toggleItem: (id: string) => any;
+    toggleItem: (itemId: string) => any;
     level?: number;
 }
 
 class Tree<T> extends React.Component<TreeProps<T> & WithStyles<CssRules>, {}> {
-    renderArrow (items: boolean, arrowClass: string, open: boolean){
-        return <i className={`${arrowClass} ${open ? "fas fa-caret-down" : `fas fa-caret-down ${this.props.classes.arrowRotate}`}`} />
+    renderArrow(status: TreeItemStatus, arrowClass: string, open: boolean, id: string) {
+        return <i
+            onClick={() => this.props.toggleItem(id)}
+            className={`
+                ${arrowClass}
+                ${status === TreeItemStatus.Pending ? this.props.classes.arrowVisibility : ''}
+                ${open ? `fas fa-caret-down ${this.props.classes.arrowTransition}` : `fas fa-caret-down ${this.props.classes.arrowRotate}`}`} />;
     }
     render(): ReactElement<any> {
         const level = this.props.level ? this.props.level : 0;
-        const {classes, render, toggleItem, items} = this.props;
-        const {list, arrow, activeArrow} = classes;
+        const { classes, render, toggleItem, items } = this.props;
+        const { list, inactiveArrow, activeArrow, loader } = classes;
         return <List component="div" className={list}>
             {items && items.map((it: TreeItem<T>, idx: number) =>
-             <div key={`item/${level}/${idx}`}>
-                <ListItem button onClick={() => toggleItem(it.id)} className={list} style={{paddingLeft: (level + 1) * 20}}>
-                    {this.renderArrow(true, it.active ? activeArrow : arrow, it.open)}
-                    {render(it, level)}
-                </ListItem>
-                {it.items && it.items.length > 0 &&
-                <Collapse in={it.open} timeout="auto" unmountOnExit>
-                    <StyledTree
-                        items={it.items}
-                        render={render}
-                        toggleItem={toggleItem}
-                        level={level + 1}/>
-                </Collapse>}
-             </div>)}
-        </List>
+                <div key={`item/${level}/${idx}`}>
+                    <ListItem button className={list} style={{ paddingLeft: (level + 1) * 20 }}>
+                        {it.status === TreeItemStatus.Pending ? <CircularProgress size={10} className={loader} /> : null}
+                        {it.toggled && it.items && it.items.length === 0 ? null : this.renderArrow(it.status, it.active ? activeArrow : inactiveArrow, it.open, it.id)}
+                        {render(it, level)}
+                    </ListItem>
+                    {it.items && it.items.length > 0 &&
+                        <Collapse in={it.open} timeout="auto" unmountOnExit>
+                            <StyledTree
+                                items={it.items}
+                                render={render}
+                                toggleItem={toggleItem}
+                                level={level + 1} />
+                        </Collapse>}
+                </div>)}
+        </List>;
     }
 }
 
 const StyledTree = withStyles(styles)(Tree);
-export default StyledTree
+export default StyledTree;