329 lines
9.5 KiB
TypeScript
329 lines
9.5 KiB
TypeScript
|
import type { ContentDetails } from "../../plugins/emitters/contentIndex"
|
||
|
|
import * as d3 from "d3"
|
||
|
|
import { registerEscapeHandler, removeAllChildren } from "./util"
|
||
|
|
import { FullSlug, SimpleSlug, getFullSlug, resolveRelative, simplifySlug } from "../../util/path"
|
||
|
|
|
||
|
|
type NodeData = {
|
||
|
|
id: SimpleSlug
|
||
|
|
text: string
|
||
|
|
tags: string[]
|
||
|
|
} & d3.SimulationNodeDatum
|
||
|
|
|
||
|
|
type LinkData = {
|
||
|
|
source: SimpleSlug
|
||
|
|
target: SimpleSlug
|
||
|
|
}
|
||
|
|
|
||
|
|
const localStorageKey = "graph-visited"
|
||
|
|
function getVisited(): Set<SimpleSlug> {
|
||
|
|
return new Set(JSON.parse(localStorage.getItem(localStorageKey) ?? "[]"))
|
||
|
|
}
|
||
|
|
|
||
|
|
function addToVisited(slug: SimpleSlug) {
|
||
|
|
const visited = getVisited()
|
||
|
|
visited.add(slug)
|
||
|
|
localStorage.setItem(localStorageKey, JSON.stringify([...visited]))
|
||
|
|
}
|
||
|
|
|
||
|
|
async function renderGraph(container: string, fullSlug: FullSlug) {
|
||
|
|
const slug = simplifySlug(fullSlug)
|
||
|
|
const visited = getVisited()
|
||
|
|
const graph = document.getElementById(container)
|
||
|
|
if (!graph) return
|
||
|
|
removeAllChildren(graph)
|
||
|
|
|
||
|
|
let {
|
||
|
|
drag: enableDrag,
|
||
|
|
zoom: enableZoom,
|
||
|
|
depth,
|
||
|
|
scale,
|
||
|
|
repelForce,
|
||
|
|
centerForce,
|
||
|
|
linkDistance,
|
||
|
|
fontSize,
|
||
|
|
opacityScale,
|
||
|
|
removeTags,
|
||
|
|
showTags,
|
||
|
|
} = JSON.parse(graph.dataset["cfg"]!)
|
||
|
|
|
||
|
|
const data = await fetchData
|
||
|
|
|
||
|
|
const links: LinkData[] = []
|
||
|
|
const tags: SimpleSlug[] = []
|
||
|
|
|
||
|
|
const validLinks = new Set(Object.keys(data).map((slug) => simplifySlug(slug as FullSlug)))
|
||
|
|
|
||
|
|
for (const [src, details] of Object.entries<ContentDetails>(data)) {
|
||
|
|
const source = simplifySlug(src as FullSlug)
|
||
|
|
const outgoing = details.links ?? []
|
||
|
|
|
||
|
|
for (const dest of outgoing) {
|
||
|
|
if (validLinks.has(dest)) {
|
||
|
|
links.push({ source, target: dest })
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (showTags) {
|
||
|
|
const localTags = details.tags
|
||
|
|
.filter((tag) => !removeTags.includes(tag))
|
||
|
|
.map((tag) => simplifySlug(("tags/" + tag) as FullSlug))
|
||
|
|
|
||
|
|
tags.push(...localTags.filter((tag) => !tags.includes(tag)))
|
||
|
|
|
||
|
|
for (const tag of localTags) {
|
||
|
|
links.push({ source, target: tag })
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const neighbourhood = new Set<SimpleSlug>()
|
||
|
|
const wl: (SimpleSlug | "__SENTINEL")[] = [slug, "__SENTINEL"]
|
||
|
|
if (depth >= 0) {
|
||
|
|
while (depth >= 0 && wl.length > 0) {
|
||
|
|
// compute neighbours
|
||
|
|
const cur = wl.shift()!
|
||
|
|
if (cur === "__SENTINEL") {
|
||
|
|
depth--
|
||
|
|
wl.push("__SENTINEL")
|
||
|
|
} else {
|
||
|
|
neighbourhood.add(cur)
|
||
|
|
const outgoing = links.filter((l) => l.source === cur)
|
||
|
|
const incoming = links.filter((l) => l.target === cur)
|
||
|
|
wl.push(...outgoing.map((l) => l.target), ...incoming.map((l) => l.source))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
Object.keys(data).forEach((id) => neighbourhood.add(simplifySlug(id as FullSlug)))
|
||
|
|
if (showTags) tags.forEach((tag) => neighbourhood.add(tag))
|
||
|
|
}
|
||
|
|
|
||
|
|
const graphData: { nodes: NodeData[]; links: LinkData[] } = {
|
||
|
|
nodes: [...neighbourhood].map((url) => {
|
||
|
|
const text = url.startsWith("tags/") ? "#" + url.substring(5) : data[url]?.title ?? url
|
||
|
|
return {
|
||
|
|
id: url,
|
||
|
|
text: text,
|
||
|
|
tags: data[url]?.tags ?? [],
|
||
|
|
}
|
||
|
|
}),
|
||
|
|
links: links.filter((l) => neighbourhood.has(l.source) && neighbourhood.has(l.target)),
|
||
|
|
}
|
||
|
|
|
||
|
|
const simulation: d3.Simulation<NodeData, LinkData> = d3
|
||
|
|
.forceSimulation(graphData.nodes)
|
||
|
|
.force("charge", d3.forceManyBody().strength(-100 * repelForce))
|
||
|
|
.force(
|
||
|
|
"link",
|
||
|
|
d3
|
||
|
|
.forceLink(graphData.links)
|
||
|
|
.id((d: any) => d.id)
|
||
|
|
.distance(linkDistance),
|
||
|
|
)
|
||
|
|
.force("center", d3.forceCenter().strength(centerForce))
|
||
|
|
|
||
|
|
const height = Math.max(graph.offsetHeight, 250)
|
||
|
|
const width = graph.offsetWidth
|
||
|
|
|
||
|
|
const svg = d3
|
||
|
|
.select<HTMLElement, NodeData>("#" + container)
|
||
|
|
.append("svg")
|
||
|
|
.attr("width", width)
|
||
|
|
.attr("height", height)
|
||
|
|
.attr("viewBox", [-width / 2 / scale, -height / 2 / scale, width / scale, height / scale])
|
||
|
|
|
||
|
|
// draw links between nodes
|
||
|
|
const link = svg
|
||
|
|
.append("g")
|
||
|
|
.selectAll("line")
|
||
|
|
.data(graphData.links)
|
||
|
|
.join("line")
|
||
|
|
.attr("class", "link")
|
||
|
|
.attr("stroke", "var(--lightgray)")
|
||
|
|
.attr("stroke-width", 1)
|
||
|
|
|
||
|
|
// svg groups
|
||
|
|
const graphNode = svg.append("g").selectAll("g").data(graphData.nodes).enter().append("g")
|
||
|
|
|
||
|
|
// calculate color
|
||
|
|
const color = (d: NodeData) => {
|
||
|
|
const isCurrent = d.id === slug
|
||
|
|
if (isCurrent) {
|
||
|
|
return "var(--secondary)"
|
||
|
|
} else if (visited.has(d.id) || d.id.startsWith("tags/")) {
|
||
|
|
return "var(--tertiary)"
|
||
|
|
} else {
|
||
|
|
return "var(--gray)"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const drag = (simulation: d3.Simulation<NodeData, LinkData>) => {
|
||
|
|
function dragstarted(event: any, d: NodeData) {
|
||
|
|
if (!event.active) simulation.alphaTarget(1).restart()
|
||
|
|
d.fx = d.x
|
||
|
|
d.fy = d.y
|
||
|
|
}
|
||
|
|
|
||
|
|
function dragged(event: any, d: NodeData) {
|
||
|
|
d.fx = event.x
|
||
|
|
d.fy = event.y
|
||
|
|
}
|
||
|
|
|
||
|
|
function dragended(event: any, d: NodeData) {
|
||
|
|
if (!event.active) simulation.alphaTarget(0)
|
||
|
|
d.fx = null
|
||
|
|
d.fy = null
|
||
|
|
}
|
||
|
|
|
||
|
|
const noop = () => {}
|
||
|
|
return d3
|
||
|
|
.drag<Element, NodeData>()
|
||
|
|
.on("start", enableDrag ? dragstarted : noop)
|
||
|
|
.on("drag", enableDrag ? dragged : noop)
|
||
|
|
.on("end", enableDrag ? dragended : noop)
|
||
|
|
}
|
||
|
|
|
||
|
|
function nodeRadius(d: NodeData) {
|
||
|
|
const numLinks = links.filter((l: any) => l.source.id === d.id || l.target.id === d.id).length
|
||
|
|
return 2 + Math.sqrt(numLinks)
|
||
|
|
}
|
||
|
|
|
||
|
|
// draw individual nodes
|
||
|
|
const node = graphNode
|
||
|
|
.append("circle")
|
||
|
|
.attr("class", "node")
|
||
|
|
.attr("id", (d) => d.id)
|
||
|
|
.attr("r", nodeRadius)
|
||
|
|
.attr("fill", color)
|
||
|
|
.style("cursor", "pointer")
|
||
|
|
.on("click", (_, d) => {
|
||
|
|
const targ = resolveRelative(fullSlug, d.id)
|
||
|
|
window.spaNavigate(new URL(targ, window.location.toString()))
|
||
|
|
})
|
||
|
|
.on("mouseover", function (_, d) {
|
||
|
|
const neighbours: SimpleSlug[] = data[fullSlug].links ?? []
|
||
|
|
const neighbourNodes = d3
|
||
|
|
.selectAll<HTMLElement, NodeData>(".node")
|
||
|
|
.filter((d) => neighbours.includes(d.id))
|
||
|
|
const currentId = d.id
|
||
|
|
const linkNodes = d3
|
||
|
|
.selectAll(".link")
|
||
|
|
.filter((d: any) => d.source.id === currentId || d.target.id === currentId)
|
||
|
|
|
||
|
|
// highlight neighbour nodes
|
||
|
|
neighbourNodes.transition().duration(200).attr("fill", color)
|
||
|
|
|
||
|
|
// highlight links
|
||
|
|
linkNodes.transition().duration(200).attr("stroke", "var(--gray)").attr("stroke-width", 1)
|
||
|
|
|
||
|
|
const bigFont = fontSize * 1.5
|
||
|
|
|
||
|
|
// show text for self
|
||
|
|
const parent = this.parentNode as HTMLElement
|
||
|
|
d3.select<HTMLElement, NodeData>(parent)
|
||
|
|
.raise()
|
||
|
|
.select("text")
|
||
|
|
.transition()
|
||
|
|
.duration(200)
|
||
|
|
.attr("opacityOld", d3.select(parent).select("text").style("opacity"))
|
||
|
|
.style("opacity", 1)
|
||
|
|
.style("font-size", bigFont + "em")
|
||
|
|
})
|
||
|
|
.on("mouseleave", function (_, d) {
|
||
|
|
const currentId = d.id
|
||
|
|
const linkNodes = d3
|
||
|
|
.selectAll(".link")
|
||
|
|
.filter((d: any) => d.source.id === currentId || d.target.id === currentId)
|
||
|
|
|
||
|
|
linkNodes.transition().duration(200).attr("stroke", "var(--lightgray)")
|
||
|
|
|
||
|
|
const parent = this.parentNode as HTMLElement
|
||
|
|
d3.select<HTMLElement, NodeData>(parent)
|
||
|
|
.select("text")
|
||
|
|
.transition()
|
||
|
|
.duration(200)
|
||
|
|
.style("opacity", d3.select(parent).select("text").attr("opacityOld"))
|
||
|
|
.style("font-size", fontSize + "em")
|
||
|
|
})
|
||
|
|
// @ts-ignore
|
||
|
|
.call(drag(simulation))
|
||
|
|
|
||
|
|
// draw labels
|
||
|
|
const labels = graphNode
|
||
|
|
.append("text")
|
||
|
|
.attr("dx", 0)
|
||
|
|
.attr("dy", (d) => -nodeRadius(d) + "px")
|
||
|
|
.attr("text-anchor", "middle")
|
||
|
|
.text((d) => d.text)
|
||
|
|
.style("opacity", (opacityScale - 1) / 3.75)
|
||
|
|
.style("pointer-events", "none")
|
||
|
|
.style("font-size", fontSize + "em")
|
||
|
|
.raise()
|
||
|
|
// @ts-ignore
|
||
|
|
.call(drag(simulation))
|
||
|
|
|
||
|
|
// set panning
|
||
|
|
if (enableZoom) {
|
||
|
|
svg.call(
|
||
|
|
d3
|
||
|
|
.zoom<SVGSVGElement, NodeData>()
|
||
|
|
.extent([
|
||
|
|
[0, 0],
|
||
|
|
[width, height],
|
||
|
|
])
|
||
|
|
.scaleExtent([0.25, 4])
|
||
|
|
.on("zoom", ({ transform }) => {
|
||
|
|
link.attr("transform", transform)
|
||
|
|
node.attr("transform", transform)
|
||
|
|
const scale = transform.k * opacityScale
|
||
|
|
const scaledOpacity = Math.max((scale - 1) / 3.75, 0)
|
||
|
|
labels.attr("transform", transform).style("opacity", scaledOpacity)
|
||
|
|
}),
|
||
|
|
)
|
||
|
|
}
|
||
|
|
|
||
|
|
// progress the simulation
|
||
|
|
simulation.on("tick", () => {
|
||
|
|
link
|
||
|
|
.attr("x1", (d: any) => d.source.x)
|
||
|
|
.attr("y1", (d: any) => d.source.y)
|
||
|
|
.attr("x2", (d: any) => d.target.x)
|
||
|
|
.attr("y2", (d: any) => d.target.y)
|
||
|
|
node.attr("cx", (d: any) => d.x).attr("cy", (d: any) => d.y)
|
||
|
|
labels.attr("x", (d: any) => d.x).attr("y", (d: any) => d.y)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
function renderGlobalGraph() {
|
||
|
|
const slug = getFullSlug(window)
|
||
|
|
const container = document.getElementById("global-graph-outer")
|
||
|
|
const sidebar = container?.closest(".sidebar") as HTMLElement
|
||
|
|
container?.classList.add("active")
|
||
|
|
if (sidebar) {
|
||
|
|
sidebar.style.zIndex = "1"
|
||
|
|
}
|
||
|
|
|
||
|
|
renderGraph("global-graph-container", slug)
|
||
|
|
|
||
|
|
function hideGlobalGraph() {
|
||
|
|
container?.classList.remove("active")
|
||
|
|
const graph = document.getElementById("global-graph-container")
|
||
|
|
if (sidebar) {
|
||
|
|
sidebar.style.zIndex = "unset"
|
||
|
|
}
|
||
|
|
if (!graph) return
|
||
|
|
removeAllChildren(graph)
|
||
|
|
}
|
||
|
|
|
||
|
|
registerEscapeHandler(container, hideGlobalGraph)
|
||
|
|
}
|
||
|
|
|
||
|
|
document.addEventListener("nav", async (e: unknown) => {
|
||
|
|
const slug = (e as CustomEventMap["nav"]).detail.url
|
||
|
|
addToVisited(slug)
|
||
|
|
await renderGraph("graph-container", slug)
|
||
|
|
|
||
|
|
const containerIcon = document.getElementById("global-graph-icon")
|
||
|
|
containerIcon?.removeEventListener("click", renderGlobalGraph)
|
||
|
|
containerIcon?.addEventListener("click", renderGlobalGraph)
|
||
|
|
})
|