JavaScript questions that don't deserve their own thread

/*
* clockoutLockPickWindow.js
* 2017-06-01
* Copyright (c) 2017 Dominic Herrera
* License: Do anything you want.
* Disclaimer: NO WARRANTY.
*/

/*:
 * @plugindesc Show lock pick count window via plugin command.
 * @author Clock Out
 *
 * @help
 * SYNOPSIS
 *     Toggle the lock pick count window.
 *
 * SYNTAX
 *     LP <ON|OFF>
 *
 * EXAMPLE
 *     LP ON
 */

var clockout = clockout || {};

clockout.window = clockout.window || {};

/**
 * Create a window to track a $gameVariable value.
 * @returns {object} The new window.
 */
clockout.window.lockPickWindow = function () {
    "use strict";

    var config = {
        name: "Lock Pick",
        numLines: 1,
        variableId: 94,
        width: 220,
        x: 530,
        y: 0
    };
    var window = Object.create(Window_Base.prototype);

    window.refresh = function () {
        var x;

        window.contents.clear();

        x = window.drawTextEx(
            config.name,
            0,
            0,
            window.windowWidth(),
            "left"
        );

        window.drawText(
            ":" + $gameVariables.value(config.variableId),
            x + 15,
            0,
            window.textWidth("000"),
            "right"
        );
    };

    window.initialize = (function (alias) {
        return function () {
            alias.apply(this, arguments);

            this.openness = 0;
        };
    }(window.initialize));

    window.update = (function (alias) {
        return function () {
            alias.call(this);
        
            if (this.isOpen()) {
                window.refresh();
            }
        };
    }(window.update));

    window.windowHeight = function () {
        return window.fittingHeight(config.numLines);
    };

    window.windowWidth = function () {
        return config.width;
    };

// Setup the window.

    window.initialize(
            config.x,
            config.y,
            window.windowWidth(),
            window.windowHeight()
        );

    window.refresh();

    return window;
};

// Alias pluginCommand.

(function (alias) {
    "use strict";

    function pluginCommand(command, args) {
        var isLoaded = SceneManager._scene.hasOwnProperty("lockPickWindow");
        var window;

        alias.call(this, command, args);

        if (command !== "LP") {
            return;
        }

        if (isLoaded === false) {
            window = clockout.window.lockPickWindow();

            SceneManager._scene.addWindow(window);
            SceneManager._scene.lockPickWindow = window;
        }

        switch (args[0]) {
        case "ON":
            SceneManager._scene.lockPickWindow.open();
            break;
        case "OFF":
            SceneManager._scene.lockPickWindow.close();
            break;
        }
    }

    Game_Interpreter.prototype.pluginCommand = pluginCommand;
}(Game_Interpreter.prototype.pluginCommand));