/*global jsPDF */
/**
 * @license
 * ==================================================================== 
 * Copyright (c) 2013 Youssef Beddad, youssef.beddad@gmail.com
 * 
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * 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
 * NONINFRINGEMENT. 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.
 * ====================================================================
 */

/**
 * jsPDF JavaScript plugin
 *
 * @name javascript
 * @module
*/
(function (jsPDFAPI) {
    'use strict';
    var jsNamesObj, jsJsObj, text;
	/**
	* @name addJS
	* @function
	* @param {string} javascript The javascript to be embedded into the PDF-file.
	* @returns {jsPDF}
	*/
    jsPDFAPI.addJS = function (javascript) {
        text = javascript;
        this.internal.events.subscribe(
            'postPutResources',
            function () {
                jsNamesObj = this.internal.newObject();
                this.internal.out('<<');
                this.internal.out('/Names [(EmbeddedJS) ' + (jsNamesObj + 1) + ' 0 R]');
                this.internal.out('>>');
                this.internal.out('endobj');

                jsJsObj = this.internal.newObject();
                this.internal.out('<<');
                this.internal.out('/S /JavaScript');
                this.internal.out('/JS (' + text + ')');
                this.internal.out('>>');
                this.internal.out('endobj');
            }
        );
        this.internal.events.subscribe(
            'putCatalog',
            function () {
                if (jsNamesObj !== undefined && jsJsObj !== undefined) {
                    this.internal.out('/Names <</JavaScript ' + jsNamesObj + ' 0 R>>');
                }
            }
        );
        return this;
    };
}(jsPDF.API));
