/* This Source Code Form is subject to the terms of the Mozilla Public
                         * License, v. 2.0. If a copy of the MPL was not distributed with this
                         * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
                        
                        /*globals define*/
                        
                        define([
                        ], function () {
                          'use strict';
                        
                          function createElement(window, type, attributes) {
                            var el = window.document.createElement(type);
                        
                            for (var attribute in attributes) {
                              el.setAttribute(attribute, attributes[attribute]);
                            }
                        
                            return el;
                          }
                        
                          function cssPropsToString(props) {
                            var str = '';
                        
                            for (var key in props) {
                              str += key + ':' + props[key] + ';';
                            }
                        
                            return str;
                          }
                        
                        
                          /**
                           * Create a lightbox.
                           *
                           * @class Lightbox
                           * @constructor
                           * @param {options={}} options
                           * @param {String} options.window
                           * The window object
                           */
                          function Lightbox(options) {
                            options = options || {};
                        
                            this._window = options.window;
                          }
                        
                          Lightbox.prototype = {
                            /**
                             * Load content into the lightbox
                             * @method load
                             * @param {String} src
                             * URL to load.
                             * @param {options={}} options
                             * @param {Number} [options.zIndex]
                             * z-index to set on the background.
                             * @default 100
                             * @param {String} [options.background]
                             * Lightbox background CSS.
                             * @default rgba(0,0,0,0.5)
                             */
                            load: function (src, options) {
                              options = options || {};
                        
                              var backgroundStyle = options.background || 'rgba(0,0,0,0.5)';
                              var zIndexStyle = options.zIndex || 100;
                        
                              var background = this._backgroundEl = createElement(this._window, 'div', {
                                id: 'fxa-background',
                                style: cssPropsToString({
                                  background: backgroundStyle,
                                  bottom: 0,
                                  left: 0,
                                  position: 'fixed',
                                  right: 0,
                                  top: 0,
                                  'z-index': zIndexStyle
                                })
                              });
                        
                              var iframe = createElement(this._window, 'iframe', {
                                id: 'fxa',
                                src: src,
                                width: '600',
                                height: '400',
                                allowtransparency: 'true',
                                border: '0',
                                style: cssPropsToString({
                                  background: 'transparent',
                                  border: 'none',
                                  display: 'block',
                                  height: '600px',
                                  margin: '0 auto 0 auto',
                                  position: 'relative',
                                  top: '10%',
                                  width: '400px'
                                })
                              });
                        
                              background.appendChild(iframe);
                              this._window.document.body.appendChild(background);
                        
                              this._iframe = iframe;
                              this._contentWindow = iframe.contentWindow;
                            },
                        
                            /**
                             * Get the content iframe element.
                             * @method getContentElement
                             * @returns {DOM Element}
                             */
                            getContentElement: function () {
                              return this._iframe;
                            },
                        
                            /**
                             * Get the content window in the iframe.
                             * @method getContentWindow
                             * @returns {DOM Element}
                             */
                            getContentWindow: function () {
                              return this._contentWindow;
                            },
                        
                            /**
                             * Check if the lightbox is loaded
                             * @method isLoaded
                             * @returns {Boolean}
                             */
                            isLoaded: function () {
                              return !! this._backgroundEl;
                            },
                        
                            /**
                             * Unload the lightbox
                             * @method unload
                             */
                            unload: function () {
                              if (this._backgroundEl) {
                                this._window.document.body.removeChild(this._backgroundEl);
                                delete this._backgroundEl;
                                delete this._iframe;
                              }
                            }
                          };
                        
                          return Lightbox;
                        });