window.MessageBus = (function() { var callbacks, clientId, failCount, interval, isHidden, queue, responseCallbacks, uniqueId; uniqueId = function() { return 'xxxxxxxxxxxx4xxxyxxxxxxxxxxxxxxx'.replace(/[xy]/g, function(c) { var r, v; r = Math.random() * 16 | 0; v = c === 'x' ? r : r & 0x3 | 0x8; return v.toString(16); }); }; clientId = uniqueId(); responseCallbacks = {}; callbacks = []; queue = []; interval = null; failCount = 0; isHidden = function() { if (document.hidden !== void 0) { return document.hidden; } else if (document.webkitHidden !== void 0) { return document.webkitHidden; } else if (document.msHidden !== void 0) { return document.msHidden; } else if (document.mozHidden !== void 0) { return document.mozHidden; } else { return !document.hasFocus; } }; return { enableLongPolling: true, callbackInterval: 60000, maxPollInterval: 3 * 60 * 1000, callbacks: callbacks, clientId: clientId, stop: false, start: function(opts) { var poll, _this = this; if (opts == null) { opts = {}; } poll = function() { var data, gotData; if (callbacks.length === 0) { setTimeout(poll, 500); return; } data = {}; callbacks.each(function(c) { return data[c.channel] = c.last_id === void 0 ? -1 : c.last_id; }); gotData = false; return _this.longPoll = $.ajax("/message-bus/" + clientId + "/poll?" + (isHidden() || !_this.enableLongPolling ? "dlp=t" : ""), { data: data, cache: false, dataType: 'json', type: 'POST', headers: { 'X-SILENCE-LOGGER': 'true' }, success: function(messages) { failCount = 0; return messages.each(function(message) { gotData = true; return callbacks.each(function(callback) { if (callback.channel === message.channel) { callback.last_id = message.message_id; callback.func(message.data); } if (message["channel"] === "/__status") { if (message.data[callback.channel] !== void 0) { callback.last_id = message.data[callback.channel]; } } }); }); }, error: failCount += 1, complete: function() { if (gotData) { setTimeout(poll, 100); } else { interval = _this.callbackInterval; if (failCount > 2) { interval = interval * failCount; } else if (isHidden()) { interval = interval * 4; } if (interval > _this.maxPollInterval) { interval = _this.maxPollInterval; } setTimeout(poll, interval); } _this.longPoll = null; } }); }; poll(); }, subscribe: function(channel, func, lastId) { callbacks.push({ channel: channel, func: func, last_id: lastId }); if (this.longPoll) { return this.longPoll.abort(); } }, unsubscribe: function(channel) { var glob; if (channel.endsWith("*")) { channel = channel.substr(0, channel.length - 1); glob = true; } callbacks = callbacks.filter(function(callback) { if (glob) { return callback.channel.substr(0, channel.length) !== channel; } else { return callback.channel !== channel; } }); if (this.longPoll) { return this.longPoll.abort(); } } }; })();