quartz-research-note/quartz/components/ExplorerNode.tsx
Tomoya Matsuura(MacBookPro) 312a2330c3
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TypeScript

// @ts-ignore
import { QuartzPluginData } from "../plugins/vfile"
import {
joinSegments,
resolveRelative,
clone,
simplifySlug,
SimpleSlug,
FilePath,
} from "../util/path"
type OrderEntries = "sort" | "filter" | "map"
export interface Options {
title?: string
folderDefaultState: "collapsed" | "open"
folderClickBehavior: "collapse" | "link"
useSavedState: boolean
sortFn: (a: FileNode, b: FileNode) => number
filterFn: (node: FileNode) => boolean
mapFn: (node: FileNode) => void
order: OrderEntries[]
}
type DataWrapper = {
file: QuartzPluginData
path: string[]
}
export type FolderState = {
path: string
collapsed: boolean
}
function getPathSegment(fp: FilePath | undefined, idx: number): string | undefined {
if (!fp) {
return undefined
}
return fp.split("/").at(idx)
}
// Structure to add all files into a tree
export class FileNode {
children: Array<FileNode>
name: string // this is the slug segment
displayName: string
file: QuartzPluginData | null
depth: number
constructor(slugSegment: string, displayName?: string, file?: QuartzPluginData, depth?: number) {
this.children = []
this.name = slugSegment
this.displayName = displayName ?? file?.frontmatter?.title ?? slugSegment
this.file = file ? clone(file) : null
this.depth = depth ?? 0
}
private insert(fileData: DataWrapper) {
if (fileData.path.length === 0) {
return
}
const nextSegment = fileData.path[0]
// base case, insert here
if (fileData.path.length === 1) {
if (nextSegment === "") {
// index case (we are the root and we just found index.md), set our data appropriately
const title = fileData.file.frontmatter?.title
if (title && title !== "index") {
this.displayName = title
}
} else {
// direct child
this.children.push(new FileNode(nextSegment, undefined, fileData.file, this.depth + 1))
}
return
}
// find the right child to insert into
fileData.path = fileData.path.splice(1)
const child = this.children.find((c) => c.name === nextSegment)
if (child) {
child.insert(fileData)
return
}
const newChild = new FileNode(
nextSegment,
getPathSegment(fileData.file.relativePath, this.depth),
undefined,
this.depth + 1,
)
newChild.insert(fileData)
this.children.push(newChild)
}
// Add new file to tree
add(file: QuartzPluginData) {
this.insert({ file: file, path: simplifySlug(file.slug!).split("/") })
}
/**
* Filter FileNode tree. Behaves similar to `Array.prototype.filter()`, but modifies tree in place
* @param filterFn function to filter tree with
*/
filter(filterFn: (node: FileNode) => boolean) {
this.children = this.children.filter(filterFn)
this.children.forEach((child) => child.filter(filterFn))
}
/**
* Filter FileNode tree. Behaves similar to `Array.prototype.map()`, but modifies tree in place
* @param mapFn function to use for mapping over tree
*/
map(mapFn: (node: FileNode) => void) {
mapFn(this)
this.children.forEach((child) => child.map(mapFn))
}
/**
* Get folder representation with state of tree.
* Intended to only be called on root node before changes to the tree are made
* @param collapsed default state of folders (collapsed by default or not)
* @returns array containing folder state for tree
*/
getFolderPaths(collapsed: boolean): FolderState[] {
const folderPaths: FolderState[] = []
const traverse = (node: FileNode, currentPath: string) => {
if (!node.file) {
const folderPath = joinSegments(currentPath, node.name)
if (folderPath !== "") {
folderPaths.push({ path: folderPath, collapsed })
}
node.children.forEach((child) => traverse(child, folderPath))
}
}
traverse(this, "")
return folderPaths
}
// Sort order: folders first, then files. Sort folders and files alphabetically
/**
* Sorts tree according to sort/compare function
* @param sortFn compare function used for `.sort()`, also used recursively for children
*/
sort(sortFn: (a: FileNode, b: FileNode) => number) {
this.children = this.children.sort(sortFn)
this.children.forEach((e) => e.sort(sortFn))
}
}
type ExplorerNodeProps = {
node: FileNode
opts: Options
fileData: QuartzPluginData
fullPath?: string
}
export function ExplorerNode({ node, opts, fullPath, fileData }: ExplorerNodeProps) {
// Get options
const folderBehavior = opts.folderClickBehavior
const isDefaultOpen = opts.folderDefaultState === "open"
// Calculate current folderPath
let folderPath = ""
if (node.name !== "") {
folderPath = joinSegments(fullPath ?? "", node.name)
}
return (
<>
{node.file ? (
// Single file node
<li key={node.file.slug}>
<a href={resolveRelative(fileData.slug!, node.file.slug!)} data-for={node.file.slug}>
{node.displayName}
</a>
</li>
) : (
<li>
{node.name !== "" && (
// Node with entire folder
// Render svg button + folder name, then children
<div class="folder-container">
<svg
xmlns="http://www.w3.org/2000/svg"
width="12"
height="12"
viewBox="5 8 14 8"
fill="none"
stroke="currentColor"
stroke-width="2"
stroke-linecap="round"
stroke-linejoin="round"
class="folder-icon"
>
<polyline points="6 9 12 15 18 9"></polyline>
</svg>
{/* render <a> tag if folderBehavior is "link", otherwise render <button> with collapse click event */}
<div key={node.name} data-folderpath={folderPath}>
{folderBehavior === "link" ? (
<a
href={resolveRelative(fileData.slug!, folderPath as SimpleSlug)}
data-for={node.name}
class="folder-title"
>
{node.displayName}
</a>
) : (
<button class="folder-button">
<span class="folder-title">{node.displayName}</span>
</button>
)}
</div>
</div>
)}
{/* Recursively render children of folder */}
<div class={`folder-outer ${node.depth === 0 || isDefaultOpen ? "open" : ""}`}>
<ul
// Inline style for left folder paddings
style={{
paddingLeft: node.name !== "" ? "1.4rem" : "0",
}}
class="content"
data-folderul={folderPath}
>
{node.children.map((childNode, i) => (
<ExplorerNode
node={childNode}
key={i}
opts={opts}
fullPath={folderPath}
fileData={fileData}
/>
))}
</ul>
</div>
</li>
)}
</>
)
}