/**
 * User: Julia.Radzhabova
 * Date: 09.02.15
 */

define([
    'common/main/lib/component/Window',
    'common/main/lib/component/LoadMask'
], function () { 'use strict';

    DE.Views.MailMergeRecepients = Common.UI.Window.extend(_.extend({
        initialize : function(options) {
            var _options = {};
            _.extend(_options,  {
                title: this.textTitle,
                width: 1024,
                height: 621,
                header: true
            }, options);

            this.template = [
                '<div id="id-mail-recepients-placeholder"></div>'
            ].join('');

            _options.tpl = _.template(this.template, _options);

            this.fileChoiceUrl = options.fileChoiceUrl || '';
            Common.UI.Window.prototype.initialize.call(this, _options);
        },

        render: function() {
            Common.UI.Window.prototype.render.call(this);
            this.$window.find('> .body').css({height: 'auto', overflow: 'hidden'});

            var iframe = document.createElement("iframe");
            iframe.width        = '100%';
            iframe.height       = 585;
            iframe.align        = "top";
            iframe.frameBorder  = 0;
            iframe.scrolling    = "no";
            iframe.onload       = _.bind(this._onLoad,this);
            $('#id-mail-recepients-placeholder').append(iframe);

            this.loadMask = new Common.UI.LoadMask({owner: $('#id-mail-recepients-placeholder')});
            this.loadMask.setTitle(this.textLoading);
            this.loadMask.show();

            iframe.src = this.fileChoiceUrl;

            var me = this;
            this._eventfunc = function(msg) {
                me._onWindowMessage(msg);
            };
            this._bindWindowEvents.call(this);

            this.on('close', function(obj){
                me._unbindWindowEvents();
            });
        },

        _bindWindowEvents: function() {
            if (window.addEventListener) {
                window.addEventListener("message", this._eventfunc, false)
            } else if (window.attachEvent) {
                window.attachEvent("onmessage", this._eventfunc);
            }
        },

        _unbindWindowEvents: function() {
            if (window.removeEventListener) {
                window.removeEventListener("message", this._eventfunc)
            } else if (window.detachEvent) {
                window.detachEvent("onmessage", this._eventfunc);
            }
        },

        _onWindowMessage: function(msg) {
            // TODO: check message origin
            if (msg && window.JSON) {
                try {
                    this._onMessage.call(this, window.JSON.parse(msg.data));
                } catch(e) {}
            }
        },

        _onMessage: function(msg) {
            if (msg && msg.file !== undefined) {
                Common.NotificationCenter.trigger('window:close', this);
                var me = this;
                setTimeout(function() {
                    if ( !_.isEmpty(msg.file) ) {
                        me.trigger('mailmergerecepients', me, msg.file);
                    }
                }, 50);
            }
        },

        _onLoad: function() {
            if (this.loadMask)
                this.loadMask.hide();
        },

        textTitle   : 'Select Data Source',
        textLoading : 'Loading'
    }, DE.Views.MailMergeRecepients || {}));
});