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