ResourceRegistry.js

(function () {
    'use strict';

    /**
     * @author <a href="mailto:[email protected]">Konstantin Kitmanov</a>
     * May be freely distributed under the MIT license.
     */


    function ResourceRegistry () {
        /** @private */
        this._storage = {};

        /** @private */
        this._fabric = {};
    }

    ResourceRegistry.prototype = {
        register: function (key, value, options) {
            if (arguments.length == 3) {
                return this._fabric[key] = [value, options]
            } else {
                return this._storage[key] = value;
            }
        },

        unregister: function (key, isFabric) {
            if (isFabric) {
                delete this._fabric[key]
            }
            else {
                delete this._storage[key];
            }
        },

        acquire: function (key, options) {
            if (arguments.length == 2) {
                if (this._fabric[key]) {
                    var fabric = this._fabric[key],
                        create = fabric[0],
                        params = _.extend({}, fabric[1], options);

                    return create(params)
                } else {
                    return this._storage[key] || options;
                }
            } else {
                return this._storage[key]
            }
        }
    };

        // conflict management — save link to previous content of ResourceRegistry, whatever it was.
    var root = this,
        prevName = root.ResourceRegistry;

    /**
     * Cleans global namespace, restoring previous value of window.ResourceRegistry, and returns ResourceRegistry itself.
     * @return {ResourceRegistry}
     */
    ResourceRegistry.noConflict = function () {
        root.ResourceRegistry = prevName;
        return this;
    };

    // Expose our precious function to outer world.
    if (typeof define === 'function' && define.amd) { // requirejs/amd env
        define(
            [],
            function () {
                return ResourceRegistry;
            }
        );
    } else { // plain browser environment
        root.ResourceRegistry = ResourceRegistry;
    }


}).call(this);