| 1 | // This file is part of HFS - Copyright 2021-2023, Massimo Melina <a@rejetto.com> - License https://www.gnu.org/licenses/gpl-3.0.txt |
| 2 | |
| 3 | import { markVfsModified, prepareVfsUndo, state, useSnapState } from './state' |
| 4 | import { createElement as h, ReactElement, useCallback, useEffect, useRef, MouseEvent } from 'react' |
| 5 | import { TreeItem, SimpleTreeView } from '@mui/x-tree-view' |
| 6 | import { |
| 7 | ChevronRight, ExpandMore, TheaterComedy, Folder, Home, Link, InsertDriveFileOutlined, Lock, |
| 8 | RemoveRedEye, Web, Upload, Cloud, Delete, HighlightOff, UnfoldMore, UnfoldLess |
| 9 | } from '@mui/icons-material' |
| 10 | import { Box, Typography } from '@mui/material' |
| 11 | import { deleteVfs, id2vfsNode, isDescendantUri, reindexVfs, VfsNodeAdmin } from './VfsPage' |
| 12 | import { onlyTruthy, pathDecode, pathEncode, prefix, toMutable, wantArray, WhoVfs, with_ } from './misc' |
| 13 | import { Flex, iconTooltip, useToggleButton } from './mui' |
| 14 | import VfsMenuBar from './VfsMenuBar' |
| 15 | import { ApiObject } from './api' |
| 16 | import { alertDialog, toast } from './dialog' |
| 17 | import _ from 'lodash' |
| 18 | |
| 19 | export const FolderIcon = Folder |
| 20 | export const FileIcon = InsertDriveFileOutlined |
| 21 | |
| 22 | let once = true |
| 23 | |
| 24 | const SPECIAL_TREE_ITEM = '?' |
| 25 | |
| 26 | export default function VfsTree({ statusApi }:{ statusApi: ApiObject }) { |
| 27 | const { vfs, selectedFiles, expanded } = useSnapState() |
| 28 | const dragging = useRef<string>() |
| 29 | const Branch = useCallback(function({ node }: { node: Readonly<VfsNodeAdmin> }): ReactElement { |
| 30 | let { id, name, isRoot } = node |
| 31 | const isFolder = node.type === 'folder' |
| 32 | const ref = useRef<HTMLLIElement | null>() |
| 33 | if (isRoot && ref.current) |
| 34 | ref.current.firstElementChild?.classList.toggle('Mui-selected', !(selectedFiles.length && !_.find(selectedFiles, { id: '/' }))) |
| 35 | const rootValue = pathDecode(id.slice(1)) |
| 36 | const rootFor = _.findKey(statusApi.data?.roots, v => v === rootValue) |
| 37 | return h(TreeItem, { |
| 38 | ref(el) { |
| 39 | ref.current = el |
| 40 | }, |
| 41 | onKeyUp(ev) { |
| 42 | if (ev.key === 'Delete') { |
| 43 | deleteVfs([id]) |
| 44 | ev.stopPropagation() |
| 45 | } |
| 46 | }, |
| 47 | onDoubleClick: toggle, |
| 48 | label: h(Box, { |
| 49 | draggable: !isRoot, |
| 50 | onDragStart() { |
| 51 | dragging.current = id |
| 52 | }, |
| 53 | onDragOver(ev) { |
| 54 | if (!isFolder) return |
| 55 | const src = dragging.current |
| 56 | if (src?.startsWith(id) && !src.slice(id.length + 1, -1).includes('/')) return // dragging node (src) must not be direct child of destination (id) |
| 57 | ev.preventDefault() |
| 58 | }, |
| 59 | async onDrop() { |
| 60 | const from = dragging.current |
| 61 | if (!from) return |
| 62 | const fromName = id2vfsNode.get(from)?.name // won't work after moving |
| 63 | if (moveVfs(from, id)) |
| 64 | toast(`Moved "${fromName}" under "${id2vfsNode.get(id)?.name}"`, 'success') |
| 65 | }, |
| 66 | sx: { |
| 67 | display: 'flex', |
| 68 | gap: '.5em', |
| 69 | minHeight: '1.8em', pt: '.2em', // comfy, make single-line ones taller |
| 70 | } |
| 71 | }, |
| 72 | h(Box, { sx: { display: 'flex', flex: 0 } }, |
| 73 | vfsNodeIcon(node), |
| 74 | // attributes, as icons |
| 75 | h(Box, { |
| 76 | sx: { |
| 77 | flex: 0, ml: '2px', my: '2px', '&>*': { fontSize: '87%', opacity: .6, mt: '-2px' }, |
| 78 | display: 'grid', gridAutoFlow: 'column', gridTemplateRows: 'auto auto', height: '1em', |
| 79 | } |
| 80 | }, |
| 81 | node.can_delete != null && iconTooltip(Delete, "Delete permission"), |
| 82 | node.can_upload != null && iconTooltip(Upload, "Upload permission"), |
| 83 | !isRoot && !node.source && !node.url && iconTooltip(Cloud, "Virtual (no source)"), |
| 84 | isRestricted(node.can_see) && iconTooltip(RemoveRedEye, "Restrictions on who can see"), |
| 85 | isRestricted(node.can_read) && iconTooltip(Lock, "Restrictions on who can download"), |
| 86 | node.default && iconTooltip(Web, "Show as web-page"), |
| 87 | node.masks && iconTooltip(TheaterComedy, "Masks"), |
| 88 | node.size === -1 && iconTooltip(HighlightOff, "Source not found"), |
| 89 | rootFor && iconTooltip(Home, `home for ${rootFor}`) |
| 90 | ), |
| 91 | ), |
| 92 | isRoot ? "Home folder" : name |
| 93 | ), |
| 94 | itemId: id |
| 95 | }, with_(node.source && isFolder ? "files from " + node.source : !node.children?.length && isRoot && "nothing here", x => |
| 96 | x && h(TreeItem, { itemId: SPECIAL_TREE_ITEM + id, label: h('i', {}, x) })), |
| 97 | ...node.children?.map(x => h(Branch, { key: x.id, node: x })) || [] |
| 98 | ) |
| 99 | |
| 100 | function isRestricted(who: WhoVfs | undefined) { |
| 101 | return who != null && who !== true |
| 102 | } |
| 103 | |
| 104 | function toggle(ev: MouseEvent<any>){ |
| 105 | const was = state.expanded |
| 106 | state.expanded = was.includes(id) ? was.filter(x => x !== id) : [...was, id] |
| 107 | ev.preventDefault() |
| 108 | ev.stopPropagation() |
| 109 | } |
| 110 | }, [statusApi.data]) |
| 111 | const ref = useRef<HTMLUListElement>(null) |
| 112 | const allExpanded = id2vfsNode.size > 0 && expanded.length === id2vfsNode.size |
| 113 | const initialExpansion = ['/', ...vfs?.children?.length === 1 ? [vfs.children[0].id] : []] // in case there's only one child, expand that too |
| 114 | if (once) { |
| 115 | once = false |
| 116 | state.expanded = initialExpansion |
| 117 | } |
| 118 | const [_expandAll, toggleBtn] = useToggleButton("Collapse all", "Expand all", exp => ({ |
| 119 | icon: exp ? UnfoldLess : UnfoldMore, |
| 120 | sx: { rotate: exp ? 0 : '180deg' }, |
| 121 | onClick() { |
| 122 | state.expanded = allExpanded ? initialExpansion : Array.from(id2vfsNode.keys()) |
| 123 | } |
| 124 | }), allExpanded) |
| 125 | useEffect(() => { |
| 126 | state.expanded = _.uniq(state.expanded.concat(state.selectedFiles.map(x => x.parent?.id || ''))) |
| 127 | }, [state.vfs]) |
| 128 | // be sure the selected element is visible |
| 129 | const treeId = 'vfs' |
| 130 | const first = selectedFiles[0] |
| 131 | useEffect(() => { // scrollIntoView in modern browsers is returning a Promise |
| 132 | document.getElementById(`${treeId}-${first?.id}`)?.scrollIntoView({ block: 'nearest', behavior: 'instant' }) |
| 133 | }, [first]) |
| 134 | return h(Flex, { flexDirection: 'column', alignItems: 'stretch', flex: 1 }, |
| 135 | h(Flex, { mb: 1, flexWrap: 'wrap', gap: [1, 2], mt: '2px' /*account for the save button's outline*/ }, |
| 136 | h(Typography, { variant: 'h6' }, "Virtual File System"), |
| 137 | h(VfsMenuBar, { statusApi, add: toggleBtn }), |
| 138 | ), |
| 139 | vfs && h(SimpleTreeView, { |
| 140 | ref, |
| 141 | expandedItems: toMutable(expanded), |
| 142 | expansionTrigger: 'iconContainer', |
| 143 | onExpandedItemsChange(_ev, ids) { |
| 144 | // keep placeholder helper rows out of expansion state to avoid persisting fake ids |
| 145 | state.expanded = wantArray(ids).filter((x): x is string => typeof x === 'string' && !x.startsWith(SPECIAL_TREE_ITEM)) |
| 146 | }, |
| 147 | selectedItems: selectedFiles.map(x => x.id), |
| 148 | multiSelect: true, |
| 149 | id: treeId, |
| 150 | sx: { |
| 151 | height: 0, flex: '1 1 auto', |
| 152 | overflowX: 'auto', |
| 153 | maxWidth: ref.current && `calc(100vw - ${16 + ref.current.offsetLeft}px)`, // limit possible horizontal scrolling to this element |
| 154 | '& ul': { borderLeft: '1px dashed #444', marginLeft: '15px', paddingLeft: '15px' }, |
| 155 | }, |
| 156 | slots: { |
| 157 | collapseIcon: ExpandMore, |
| 158 | expandIcon: ChevronRight, |
| 159 | }, |
| 160 | onSelectedItemsChange(_ev, ids) { |
| 161 | const selectedIds = wantArray(ids) as string[] |
| 162 | state.selectedFiles = onlyTruthy(selectedIds.map(id => id2vfsNode.get(id))) |
| 163 | // this is the only point where we have special node ids that don't fit selectedFiles |
| 164 | state.vfsShowDiskContentFor = selectedIds.length === 1 |
| 165 | && selectedIds[0][0] === SPECIAL_TREE_ITEM |
| 166 | && id2vfsNode.get(selectedIds[0].slice(1))?.source || '' |
| 167 | } |
| 168 | }, h(Branch, { node: vfs as Readonly<VfsNodeAdmin> })) |
| 169 | ) |
| 170 | } |
| 171 | |
| 172 | export function moveVfs(from: string, to: string) { |
| 173 | const fromNode = id2vfsNode.get(from) |
| 174 | if (!fromNode) |
| 175 | return !alertDialog("Item to move not found", 'error') |
| 176 | if (fromNode.isRoot) |
| 177 | return !alertDialog("Cannot move root", 'error') |
| 178 | const toNode = id2vfsNode.get(to) |
| 179 | if (!toNode || toNode.type !== 'folder') |
| 180 | return !alertDialog("Destination folder not found", 'error') |
| 181 | if (isDescendantUri(to, from)) |
| 182 | return !alertDialog("Cannot move inside itself", 'error') |
| 183 | if (toNode.children?.find(x => x.name === fromNode.name)) |
| 184 | return !alertDialog("Item with same name already present in destination", 'error') |
| 185 | const oldSiblings = fromNode.parent?.children |
| 186 | if (!oldSiblings) |
| 187 | return !alertDialog("Source parent not found", 'error') |
| 188 | const fromParent = fromNode.parent |
| 189 | const movedName = fromNode.name |
| 190 | const movedIsFolder = fromNode.type === 'folder' |
| 191 | const destinationAncestors = getAncestorIds(toNode) |
| 192 | prepareVfsUndo() |
| 193 | _.remove(oldSiblings, { id: fromNode.id }) |
| 194 | if (!oldSiblings.length && fromParent) |
| 195 | fromParent.children = undefined |
| 196 | addToChildrenOf(toNode, [fromNode]) |
| 197 | const movedId = prefix(to, pathEncode(movedName), movedIsFolder ? '/' : '') |
| 198 | reindexVfs({ select: [movedId] }) |
| 199 | state.expanded = _.uniq([...state.expanded, ...destinationAncestors]) |
| 200 | return true |
| 201 | |
| 202 | function getAncestorIds(node: VfsNodeAdmin) { |
| 203 | const ret: string[] = [] |
| 204 | let cur: typeof node | undefined = node |
| 205 | while (cur) { |
| 206 | ret.push(cur.id) |
| 207 | cur = cur.parent |
| 208 | } |
| 209 | return ret |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | export function vfsNodeIcon(node: VfsNodeAdmin) { |
| 214 | return node.isRoot ? iconTooltip(Home, "home, or root if you like") |
| 215 | : node.type === 'folder' ? iconTooltip(FolderIcon, "Folder") |
| 216 | : node.url ? iconTooltip(Link, "Web-link") |
| 217 | : iconTooltip(FileIcon, "File") |
| 218 | } |
| 219 | |
| 220 | export function addToChildrenOf(parent: VfsNodeAdmin, moreChildren: VfsNodeAdmin[]) { |
| 221 | if (!parent.children) |
| 222 | parent.children = [] |
| 223 | // keep the assignment above and push separated: on proxied nodes, combining them will push to a stale array reference. |
| 224 | parent.children.push(...moreChildren) |
| 225 | |
| 226 | markVfsModified() |
| 227 | } |