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(function ($, undef) { var global = this; // Namespace. global.FS = global.FS || {}; global.FS.PostMessage = function () { var _is_child = false, _postman = new NoJQueryPostMessageMixin('postMessage', 'receiveMessage'), _callbacks = {}, _base_url, _parent_url = decodeURIComponent(document.location.hash.replace(/^#/, '')), _parent_subdomain = _parent_url.substring(0, _parent_url.indexOf('/', ('https://' === _parent_url.substring(0, ('https://').length)) ? 8 : 7)), _init = function () { _postman.receiveMessage(function (e) { var data = JSON.parse(e.data); if (_callbacks[data.type]) { for (var i = 0; i < _callbacks[data.type].length; i++) { // Execute type callbacks. _callbacks[data.type][i](data.data); } } }, _base_url); }, _hasParent = ('' !== _parent_url), $window = $(window), $html = $('html'); return { init : function (url, iframes) { _base_url = url; _init(); // Automatically receive forward messages. FS.PostMessage.receiveOnce('forward', function (data){ window.location = data.url; }); iframes = iframes || []; if (iframes.length > 0) { $window.on('scroll', function () { for (var i = 0; i < iframes.length; i++) { FS.PostMessage.postScroll(iframes[i]); } }); } }, init_child : function () { this.init(_parent_subdomain); _is_child = true; // Post height of a child right after window is loaded. $(window).bind('load', function () { FS.PostMessage.postHeight(); // Post message that window was loaded. FS.PostMessage.post('loaded'); }); }, hasParent : function () { return _hasParent; }, postHeight : function (diff, wrapper) { diff = diff || 0; wrapper = wrapper || '#wrap_section'; this.post('height', { height: diff + $(wrapper).outerHeight(true) }); }, postScroll : function (iframe) { this.post('scroll', { top: $window.scrollTop(), height: ($window.height() - parseFloat($html.css('paddingTop')) - parseFloat($html.css('marginTop'))) }, iframe); }, post : function (type, data, iframe) { console.debug('PostMessage.post', type); if (iframe) { // Post to iframe. _postman.postMessage(JSON.stringify({ type: type, data: data }), iframe.src, iframe.contentWindow); } else { // Post to parent. _postman.postMessage(JSON.stringify({ type: type, data: data }), _parent_url, window.parent); } }, receive: function (type, callback) { console.debug('PostMessage.receive', type); if (undef === _callbacks[type]) _callbacks[type] = []; _callbacks[type].push(callback); }, receiveOnce: function (type, callback) { if (this.is_set(type)) return; this.receive(type, callback); }, // Check if any callbacks assigned to a specified message type. is_set: function (type) { return (undef != _callbacks[type]); }, parent_url: function () { return _parent_url; }, parent_subdomain: function () { return _parent_subdomain; } }; }(); })(jQuery);