services/workbench2/src/components/tree/virtual-tree.tsx

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 import React from 'react';
   6 import classnames from "classnames";
   7 import { StyleRulesCallback, withStyles, WithStyles } from '@material-ui/core/styles';
   8 import { ReactElement } from "react";
   9 import { FixedSizeList, ListChildComponentProps } from "react-window";
  10 import AutoSizer from "react-virtualized-auto-sizer";
  11
  12 import { ArvadosTheme } from 'common/custom-theme';
  13 import { TreeItem, TreeProps, TreeItemStatus } from './tree';
  14 import { ListItem, Radio, Checkbox, CircularProgress, ListItemIcon } from '@material-ui/core';
  15 import { SidePanelRightArrowIcon } from '../icon/icon';
  16
  17 type CssRules = 'list'
  18     | 'listItem'
  19     | 'active'
  20     | 'loader'
  21     | 'toggableIconContainer'
  22     | 'iconClose'
  23     | 'renderContainer'
  24     | 'iconOpen'
  25     | 'toggableIcon'
  26     | 'checkbox'
  27     | 'virtualFileTree'
  28     | 'virtualizedList';
  29
  30 const styles: StyleRulesCallback<CssRules> = (theme: ArvadosTheme) => ({
  31     list: {
  32         padding: '3px 0px',
  33     },
  34     virtualFileTree: {
  35         "&:last-child": {
  36             paddingBottom: 20
  37           }
  38     },
  39     virtualizedList: {
  40         height: '200px',
  41     },
  42     listItem: {
  43         padding: '3px 0px',
  44     },
  45     loader: {
  46         position: 'absolute',
  47         transform: 'translate(0px)',
  48         top: '3px'
  49     },
  50     toggableIconContainer: {
  51         color: theme.palette.grey["700"],
  52         height: '14px',
  53         width: '14px',
  54     },
  55     toggableIcon: {
  56         fontSize: '14px'
  57     },
  58     renderContainer: {
  59         flex: 1
  60     },
  61     active: {
  62         color: theme.palette.primary.main,
  63     },
  64     iconClose: {
  65         transition: 'all 0.1s ease',
  66     },
  67     iconOpen: {
  68         transition: 'all 0.1s ease',
  69         transform: 'rotate(90deg)',
  70     },
  71     checkbox: {
  72         width: theme.spacing.unit * 3,
  73         height: theme.spacing.unit * 3,
  74         margin: `0 ${theme.spacing.unit}px`,
  75         padding: 0,
  76         color: theme.palette.grey["500"],
  77     }
  78 });
  79
  80 export interface VirtualTreeItem<T> extends TreeItem<T> {
  81     itemCount?: number;
  82     level?: number;
  83 }
  84
  85 // For some reason, on TSX files it isn't accepted just one generic param, so
  86 // I'm using <T, _> as a workaround.
  87 // eslint-disable-next-line
  88 export const Row =  <T, _>(itemList: VirtualTreeItem<T>[], render: any, treeProps: TreeProps<T>) => withStyles(styles)(
  89     (props: React.PropsWithChildren<ListChildComponentProps> & WithStyles<CssRules>) => {
  90         const { index, style, classes } = props;
  91         const it = itemList[index];
  92         const level = it.level || 0;
  93         const { toggleItemActive, disableRipple, currentItemUuid, useRadioButtons } = treeProps;
  94         const { listItem, loader, toggableIconContainer, renderContainer, virtualFileTree } = classes;
  95         const { levelIndentation = 20, itemRightPadding = 20 } = treeProps;
  96
  97         const showSelection = typeof treeProps.showSelection === 'function'
  98             ? treeProps.showSelection
  99             : () => treeProps.showSelection ? true : false;
 100
 101         const handleRowContextMenu = (item: VirtualTreeItem<T>) =>
 102             (event: React.MouseEvent<HTMLElement>) => {
 103                 treeProps.onContextMenu(event, item);
 104             };
 105
 106         const handleToggleItemOpen = (item: VirtualTreeItem<T>) =>
 107             (event: React.MouseEvent<HTMLElement>) => {
 108                 event.stopPropagation();
 109                 treeProps.toggleItemOpen(event, item);
 110             };
 111
 112         const getToggableIconClassNames = (isOpen?: boolean, isActive?: boolean) => {
 113             const { iconOpen, iconClose, active, toggableIcon } = props.classes;
 114             return classnames(toggableIcon, {
 115                 [iconOpen]: isOpen,
 116                 [iconClose]: !isOpen,
 117                 [active]: isActive
 118             });
 119         };
 120
 121         const isSidePanelIconNotNeeded = (status: string, itemCount: number) => {
 122             return status === TreeItemStatus.PENDING ||
 123                 (status === TreeItemStatus.LOADED && itemCount === 0);
 124         };
 125
 126         const getProperArrowAnimation = (status: string, itemCount: number) => {
 127             return isSidePanelIconNotNeeded(status, itemCount) ? <span /> : <SidePanelRightArrowIcon style={{ fontSize: '14px' }} />;
 128         };
 129
 130         const handleCheckboxChange = (item: VirtualTreeItem<T>) => {
 131             const { toggleItemSelection } = treeProps;
 132             return toggleItemSelection
 133                 ? (event: React.MouseEvent<HTMLElement>) => {
 134                     event.stopPropagation();
 135                     toggleItemSelection(event, item);
 136                 }
 137                 : undefined;
 138         };
 139
 140         return <div className={virtualFileTree} data-cy='virtual-file-tree' style={style}>
 141             <ListItem button className={listItem}
 142                 style={{
 143                     paddingLeft: (level + 1) * levelIndentation,
 144                     paddingRight: itemRightPadding,
 145                 }}
 146                 disableRipple={disableRipple}
 147                 onClick={event => toggleItemActive(event, it)}
 148                 selected={showSelection(it) && it.id === currentItemUuid}
 149                 onContextMenu={handleRowContextMenu(it)}>
 150                 {it.status === TreeItemStatus.PENDING ?
 151                     <CircularProgress size={10} className={loader} /> : null}
 152                 <i onClick={handleToggleItemOpen(it)}
 153                     className={toggableIconContainer}>
 154                     <ListItemIcon className={getToggableIconClassNames(it.open, it.active)}>
 155                         {getProperArrowAnimation(it.status, it.itemCount!)}
 156                     </ListItemIcon>
 157                 </i>
 158                 {showSelection(it) && !useRadioButtons &&
 159                     <Checkbox
 160                         checked={it.selected}
 161                         className={classes.checkbox}
 162                         color="primary"
 163                         onClick={handleCheckboxChange(it)} />}
 164                 {showSelection(it) && useRadioButtons &&
 165                     <Radio
 166                         checked={it.selected}
 167                         className={classes.checkbox}
 168                         color="primary" />}
 169                 <div className={renderContainer}>
 170                     {render(it, level)}
 171                 </div>
 172             </ListItem>
 173         </div>;
 174     });
 175
 176 const itemSize = 30;
 177
 178 // eslint-disable-next-line
 179 export const VirtualList = <T, _>(height: number, width: number, items: VirtualTreeItem<T>[], render: any, treeProps: TreeProps<T>) =>
 180     <FixedSizeList
 181         height={height}
 182         itemCount={items.length}
 183         itemSize={itemSize}
 184         width={width}
 185     >
 186         {Row(items, render, treeProps)}
 187     </FixedSizeList>;
 188
 189 export const VirtualTree = withStyles(styles)(
 190     class Component<T> extends React.Component<TreeProps<T> & WithStyles<CssRules>, {}> {
 191         render(): ReactElement<any> {
 192             const { items, render } = this.props;
 193             return <AutoSizer>
 194                 {({ height, width }) => {
 195                     return VirtualList(height, width, items || [], render, this.props);
 196                 }}
 197             </AutoSizer>;
 198         }
 199     }
 200 );