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/**
 * The Panda JavaScript Components Core Library
 * 
 * For more information, visit our website at www.panda-js.org
 * 
 * @package panda
 * @namespace window
 */
window.panda = window.panda || (function () {
    var app, util, service;
    
    /** Application settings and helpers */
    app = {        
        /**
         * Namespace Initializer
         *
         * Looks at a string and prepares a namespace from it's components. If
         * a sub-package already exists, it will leave it as is.
         * 
         * Inspired by YUI's YAHOO.namespace() utility.
         * 
         * @param {String} namespace
         */
        namespace : function (namespace) {
            var components = namespace.split(/[^a-z0-9]+/ig);
            var context = window;
            
            for (var i = 0, l = components.length; i < l; i += 1) {
                var component = components[i];
                
                if (!context[component]) {
                    context[component] = {};
                }
                
                context = context[component];
            }
            
            return context;
        },
        
        /**
         * Module Factory
         * 
         * Creates a new module from an object of arbitrary components. 
         * 
         * @param {Object} components
         */
        module : function (components) {
            if (typeof components === 'function') {
                components = components();
            }
            
            components.extend = components.extend || function () {
                if (arguments.length === 1) return util.extend(arguments[0], components);
            };
            
            return components;
        }
    };
    
    /** Utility methods */
    util = {
        /** 
         * Generic object extender
         */
        extend : function (sub, super) {
            if (super) {
                for (var name in super) {
                    if (!sub[name]) sub[name] = super[name];
                }
            }
            
            return sub;
        }
    };
    
    /** The exposed service */
    window.panda = service = {
        namespace : app.namespace,
        module    : app.module
    };
})();