import dom = require("dojo/dom-construct");
import { argumentNotEmptyString } from "@implab/core-amd/safe";
import { RenditionBase } from "./RenditionBase";
import { placeAt } from "./traits";
import { IScope } from "./Scope";
import { getItemDom } from "./render";

export class HtmlRendition extends RenditionBase<HTMLElement> {
    elementType: string;

    _element: HTMLElement | undefined;

    constructor(elementType: string) {
        argumentNotEmptyString(elementType, "elementType");
        super();

        this.elementType = elementType;
    }

    _addChild(child: unknown, scope: IScope): void {
        if (!this._element)
            throw new Error("The HTML element isn't created");
        placeAt(getItemDom(child, scope), this._element);
    }

    _create(attrs: object, children: unknown[], scope: IScope) {
        this._element = dom.create(this.elementType, attrs);

        children.forEach(v => this._addChild(v, scope));
    }

    _getDomNode() {
        if (!this._element)
            throw new Error("The HTML element isn't created");

        return this._element;
    }

}