Files
writebook/app/javascript/controllers/autosave_controller.js

60 lines
1.1 KiB
JavaScript

import { Controller } from "@hotwired/stimulus"
import { submitForm } from "helpers/form_helpers"
const AUTOSAVE_INTERVAL = 3000
export default class extends Controller {
static classes = [ "clean", "dirty", "saving" ]
#timer
// Lifecycle
disconnect() {
this.submit()
}
// Actions
async submit() {
if (this.#dirty) {
await this.#save()
}
}
change(event) {
if (event.target.form === this.element && !this.#dirty) {
this.#scheduleSave()
this.#updateAppearance()
}
}
// Private
async #save() {
this.#updateAppearance(true)
this.#resetTimer()
await submitForm(this.element)
this.#updateAppearance()
}
#updateAppearance(saving = false) {
this.element.classList.toggle(this.cleanClass, !this.#dirty)
this.element.classList.toggle(this.dirtyClass, this.#dirty)
this.element.classList.toggle(this.savingClass, saving)
}
#scheduleSave() {
this.#timer = setTimeout(() => this.#save(), AUTOSAVE_INTERVAL)
}
#resetTimer() {
clearTimeout(this.#timer)
this.#timer = null
}
get #dirty() {
return !!this.#timer
}
}