MapComplete/UI/BigComponents/BackgroundSelector.ts

import { DropDown } from "../Input/DropDown"
import Translations from "../i18n/Translations"
import State from "../../State"
import BaseLayer from "../../Models/BaseLayer"
import { VariableUiElement } from "../Base/VariableUIElement"
import { Store } from "../../Logic/UIEventSource"

export default class BackgroundSelector extends VariableUiElement {
    constructor(state: { availableBackgroundLayers?: Store<BaseLayer[]> }) {
        const available = state.availableBackgroundLayers?.map((available) => {
            if (available === undefined) {
                return undefined
            }
            const baseLayers: { value: BaseLayer; shown: string }[] = []
            for (const i in available) {
                if (!available.hasOwnProperty(i)) {
                    continue
                }
                const layer: BaseLayer = available[i]
                baseLayers.push({ value: layer, shown: layer.name ?? "id:" + layer.id })
            }
            return baseLayers
        })

        super(
            available?.map((baseLayers) => {
                if (baseLayers === undefined || baseLayers.length <= 1) {
                    return undefined
                }
                return new DropDown(
                    Translations.t.general.backgroundMap.Clone(),
                    baseLayers,
                    State.state.backgroundLayer,
                    {
                        select_class: "bg-indigo-100 p-1 rounded hover:bg-indigo-200 w-full",
                    }
                )
            })
        )
    }
}