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import h337 from "heatmap.js"
type ClickEvent = {
x: number
y: number
tag: string
}
type UrlEvent = {
url: string
}
type ClicksBaseEvent = ClickEvent | UrlEvent
interface Format {
format: string
version: string
width: number
height: number
brands: string
events: ClicksBaseEvent[]
}
class PageData {
readonly url: string
readonly width: number
readonly data: h337.HeatmapData<h337.DataPoint>
constructor(url: string, width: number, data: h337.DataPoint[]) {
this.url = url
this.width = width
let maxValue = 0
for (const d of data) {
if (d.value > maxValue) maxValue = d.value
}
this.data = {
data: data,
min: 0,
max: maxValue,
}
}
}
class Display {
private status: HTMLElement
private frame_container: HTMLElement
private frame: HTMLIFrameElement
private url: HTMLSelectElement
private heatmap: HTMLElement
private data: PageData[] | undefined
private map: h337.Heatmap<"value", "x", "y">
private current: PageData | undefined
constructor() {
this.status = document.getElementById("status")!
this.frame_container = document.getElementById("frame_container")!
this.frame = document.getElementById("frame")! as HTMLIFrameElement
this.heatmap = document.getElementById("heatmap")!
this.url = document.getElementById("url")! as HTMLSelectElement
this.map = h337.create({
container: this.heatmap,
})
this.url.addEventListener("change", () => {
if (this.data === undefined) return
this.show(this.data[this.url.selectedIndex])
})
}
loadFile(file: File) {
this.setStatus("Loading...")
const reader = new FileReader()
reader.addEventListener("load", () => {
const data = JSON.parse(reader.result as string) as Format
if (data.format !== "clicks" || data.version !== "1.0") {
this.setStatus("Unknown format")
return
}
this.data = []
const scaleX = data.width
const scaleY = data.width
type TempPage = {
url: string
added: boolean
map: Map<string, number>
clicks: h337.DataPoint[]
}
let current: TempPage | undefined
const pages: TempPage[] = []
for (const event of data.events) {
if ("url" in event) {
if (current !== undefined && !current.added) {
current.added = true
pages.push(current)
}
current = undefined
for (const page of pages) {
if (page.url === event.url) {
current = page
break
}
}
if (current === undefined) {
current = {
url: event.url,
added: false,
map: new Map<string, number>(),
clicks: [],
}
}
} else if (current !== undefined) {
const x = Math.round(event.x * scaleX)
const y = Math.round(event.y * scaleY)
const pos = `${x}x${y}`
const index = current.map.get(pos)
if (index === undefined) {
current.map.set(pos, current.clicks.length)
current.clicks.push({ x: x, y: y, value: 1 })
} else {
current.clicks[index].value++
}
}
}
if (current !== undefined && !current.added) {
current.added = true
pages.push(current)
}
for (const page of pages) {
this.data.push(new PageData(page.url, data.width, page.clicks))
}
while (this.url.options.length > 0) this.url.options.remove(0)
for (let i = 0; i < this.data.length; i++) {
const option = document.createElement("option")
option.value = `${i}`
option.innerText = this.data[i].url
this.url.options.add(option)
}
this.setStatus("Loaded")
if (this.data.length > 0) {
this.url.selectedIndex = 0
this.show(this.data[0])
}
})
reader.readAsText(file)
}
private setStatus(newStatus: string) {
this.status.innerText = newStatus
}
private show(data: PageData) {
if (this.current === data) return
this.current = data
this.frame_container.style.width = `${data.width}px`
this.frame.src = data.url
this.heatmap.style.transform = "translateY(0px)"
this.frame.addEventListener("load", () => {
this.frame.contentDocument?.addEventListener("scroll", () => {
const y = this.frame.contentDocument!.documentElement.scrollTop
this.heatmap.style.transform = `translateY(${-y}px)`
})
})
this.map.setData(data.data)
}
}
document.addEventListener("DOMContentLoaded", () => {
const file = document.getElementById("file")
const display = new Display()
file?.addEventListener("change", (event: Event) => {
const files = (event.target as HTMLInputElement | null)!.files
if (files === null) return
if (files.length > 0) {
display.loadFile(files[0])
}
})
})
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