import { argumentNotNull } from "@implab/core-amd/safe";
import { RenditionBase } from "./RenditionBase";

export class FunctionRendition extends RenditionBase<Node> {
    private _component: (props: any) => any;

    private _node: Node | undefined;

    constructor(component: (props: any) => any) {
        super();
        argumentNotNull(component, "component");

        this._component = component;
    }

    _create(attrs: object, children: any[]) {
        const _attrs: any = attrs || {};
        _attrs.children = children.map(x => this.getItemDom(x));

        this._node = this.getItemDom(this._component.call(null, _attrs));
    }

    _getDomNode() {
        if (!this._node)
            throw new Error("The instance of the widget isn't created");
        return this._node;
    }

}