MapComplete/UI/CenterMessageBox.ts

import Translations from "./i18n/Translations"
import { VariableUiElement } from "./Base/VariableUIElement"
import FeaturePipelineState from "../Logic/State/FeaturePipelineState"
import Loading from "./Base/Loading"

export default class CenterMessageBox extends VariableUiElement {
    constructor(state: FeaturePipelineState) {
        const updater = state.featurePipeline
        const t = Translations.t.centerMessage
        const message = updater.runningQuery.map(
            (isRunning) => {
                if (isRunning) {
                    return { el: new Loading(t.loadingData) }
                }
                if (!updater.sufficientlyZoomed.data) {
                    return { el: t.zoomIn }
                }
                if (updater.timeout.data > 0) {
                    return { el: t.retrying.Subs({ count: "" + updater.timeout.data }) }
                }
                return { el: t.ready, isDone: true }
            },
            [updater.timeout, updater.sufficientlyZoomed, state.locationControl]
        )

        super(message.map((toShow) => toShow.el))

        this.SetClass(
            "flex justify-center " +
                "rounded-3xl bg-white text-xl font-bold pointer-events-none p-4"
        )
        this.SetStyle("transition: opacity 750ms linear")

        message.addCallbackAndRun((toShow) => {
            const isDone = toShow.isDone ?? false
            if (isDone) {
                this.SetStyle("transition: opacity 750ms linear; opacity: 0")
            } else {
                this.SetStyle("transition: opacity 750ms linear; opacity: 0.75")
            }
        })
    }
}