/*
 * Copyright (c) 2014 Gwennael Buchet
 *
 * License/Terms of Use
 *
 * Permission is hereby granted, free of charge and for the term of intellectual property rights on the Software, to any
 * person obtaining a copy of this software and associated documentation files (the "Software"), to use, copy, modify
 * and propagate free of charge, anywhere in the world, all or part of the Software subject to the following mandatory
 * conditions:
 *
 *   •    The above copyright notice and this permission notice shall be included in all copies or substantial portions
 *   of the Software.
 *
 *  Any failure to comply with the above shall automatically terminate the license and be construed as a breach of these
 *  Terms of Use causing significant harm to Gwennael Buchet.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 *  WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 *  OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 *  TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *  SOFTWARE.
 *
 *  Except as contained in this notice, the name of Gwennael Buchet shall not be used in advertising or otherwise to promote
 *  the use or other dealings in this Software without prior written authorization from Gwennael Buchet.
 *
 *  These Terms of Use are subject to French law.
 */

/**
 * An Image manager.
 * The target is to load only once an image which is used for several nodes
 *
 * @class CGSGImgManager
 * @module Util
 * @constructor
 * @author Gwennael Buchet (gwennael.buchet@gmail.com)
 */
var CGSGImgManager = CGSGObject.extend(
    {
        initialize : function() {
            /**
             * @property _mapURL
             * @type {CGSGMap} [URL; Image]
             */
            this._mapURL = new CGSGMap();
        },

        /**
         * @method get
         * @param url {String}
         * @return {Image} or null if doesn't exist yet
         */
        get : function(url) {
            return this._mapURL.getValue(url);
        },

        /**
         * @method set
         * @param url {String}
         * @param img {Image}
         */
        set : function(url, img) {
            this._mapURL.addOrReplace(url, img);
        }

    }
);

var cgsgImgManager = new CGSGImgManager();