/**
 * uiUtil.js : Utility functions for the User Interface
 * 
 * Copyright 2013-2014 Mossroy and contributors
 * License GPL v3:
 * 
 * This file is part of Kiwix.
 * 
 * Kiwix 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.
 * 
 * Kiwix 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 Kiwix (file LICENSE-GPLv3.txt).  If not, see <http://www.gnu.org/licenses/>
 */
'use strict';
define([], function() {

    
    /**
     * Creates a Blob from the given content, then a URL from this Blob
     * And put this URL in the attribute of the DOM node
     * 
     * This is useful to inject images (and other dependencies) inside an article
     * 
     * @param {Object} jQueryNode
     * @param {String} nodeAttribute
     * @param {Uint8Array} content
     * @param {String} mimeType
     */
    function feedNodeWithBlob(jQueryNode, nodeAttribute, content, mimeType) {
        var blob = new Blob([content], { type: mimeType }, {oneTimeOnly: true});
        var url = URL.createObjectURL(blob);
        /*jQueryNode.on('load', function () {
            URL.revokeObjectURL(url);
        });*/
        jQueryNode.attr(nodeAttribute, url);
    }
        
    var regexpRemoveUrlParameters = new RegExp(/([^\?]+)\?.*$/);
    
    function removeUrlParameters(url) {
        if (regexpRemoveUrlParameters.test(url)) {
            return regexpRemoveUrlParameters.exec(url)[1];
        } else {
            return url;
        }
    }

    /**
     * Functions and classes exposed by this module
     */
    return {
        feedNodeWithBlob: feedNodeWithBlob,
        removeUrlParameters: removeUrlParameters
    };
});