/*
 * Copyright © 2020 Luciano Iam <lucianito@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

export class BaseWidget {

    get element () {
        // empty
    }

    appendTo (container) {
        container.appendChild(this);
    }

    get id () {
        return this.element.id;
    }

    set id (id) {
        this.element.id = id;
    }

    get classList () {
        return this.element.classList;
    }

    set classList (classList) {
        this.element.classList = classList;
    }

}

export class BaseContainer extends BaseWidget {

    constructor (context) {
        super(context);
        this.children = [];
    }

    appendChild (child) {
        this.children.push(child);
    }

}

export class BaseControl extends BaseWidget {

    get value () {
        // empty
    }

    set value (val) {
        // empty
    }

    callback (val) {
        // empty
    }

    bindTo (component, property) {
        // ardour → ui
        this.value = component[property];
        component.on(property, (value) => this.value = value);
        // ui → ardour
        this.callback = (value) => component[property] = value;
    }

}

// Currently unused

export function createElement (html) {
    const t = document.createElement('template');
    t.innerHTML = html;
    const elem = t.content.firstChild;
    return elem;
}