var callbacks = {} var callbacks_ids = 1; var sendMessage = function(method, params) { return new Promise(function(resolve, reject) { var id = callbacks_ids++; callbacks[id] = {'resolve': resolve, 'reject': reject}; common.naclModule.postMessage({ 'callbackId': id, 'method': method, 'params': params }); }); } function handleMessage(msg) { if (msg.data.callbackId && callbacks[msg.data.callbackId]) { // if it's a callback, treat it as such callbacks[msg.data.callbackId][msg.data.type](msg.data.ret); delete callbacks[msg.data.callbackId] } else { // else, it's just info, or an event console.log(msg.data); if(msg.data === 'streamTerminated') { // if it's a recognized event, notify the appropriate function showAppsMode(); } } }