/**
 * @fileoverview Implements the PC6502 Keyboard component.
 * @author <a href="mailto:Jeff@pcjs.org">Jeff Parsons</a>
 * @copyright © Jeff Parsons 2012-2016
 *
 * This file is part of PCjs, a computer emulation software project at <http://pcjs.org/>.
 *
 * PCjs 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 3
 * of the License, or (at your option) any later version.
 *
 * PCjs 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 PCjs.  If not,
 * see <http://www.gnu.org/licenses/gpl.html>.
 *
 * You are required to include the above copyright notice in every modified copy of this work
 * and to display that copyright notice when the software starts running; see COPYRIGHT in
 * <http://pcjs.org/modules/shared/lib/defines.js>.
 *
 * Some PCjs files also attempt to load external resource files, such as character-image files,
 * ROM files, and disk image files. Those external resource files are not considered part of PCjs
 * for purposes of the GNU General Public License, and the author does not claim any copyright
 * as to their contents.
 */

"use strict";

if (NODE) {
    var str         = require("../../shared/lib/strlib");
    var web         = require("../../shared/lib/weblib");
    var Component   = require("../../shared/lib/component");
    var Keys        = require("../../shared/lib/keys");
    var Messages    = require("./messages");
    var State       = require("./state");
    var CPU         = require("./cpu");
}

/**
 * Keyboard(parmsKbd)
 *
 * @constructor
 * @extends Component
 * @param {Object} parmsKbd
 */
function Keyboard(parmsKbd)
{
    Component.call(this, "Keyboard", parmsKbd, Keyboard, Messages.KEYBOARD);

    this.setReady();
}

Component.subclass(Keyboard);

/**
 * Keyboard.init()
 *
 * This function operates on every HTML element of class "keyboard", extracting the
 * JSON-encoded parameters for the Keyboard constructor from the element's "data-value"
 * attribute, invoking the constructor to create a Keyboard component, and then binding
 * any associated HTML controls to the new component.
 */
Keyboard.init = function()
{
    var aeKbd = Component.getElementsByClass(document, APPCLASS, "keyboard");
    for (var iKbd = 0; iKbd < aeKbd.length; iKbd++) {
        var eKbd = aeKbd[iKbd];
        var parmsKbd = Component.getComponentParms(eKbd);
        var kbd = new Keyboard(parmsKbd);
        Component.bindComponentControls(kbd, eKbd, APPCLASS);
    }
};

/*
 * Initialize every Keyboard module on the page.
 */
web.onInit(Keyboard.init);

if (NODE) module.exports = Keyboard;