var H5P = H5P || {}; importScripts('h5p-version.js', 'h5p-content-upgrade-process.js'); var libraryLoadedCallback; /** * Register message handlers */ var messageHandlers = { newJob: function (job) { // Start new job new H5P.ContentUpgradeProcess(job.name, new H5P.Version(job.oldVersion), new H5P.Version(job.newVersion), job.params, job.id, function loadLibrary(name, version, next) { // TODO: Cache? postMessage({ action: 'loadLibrary', name: name, version: version.toString() }); libraryLoadedCallback = next; }, function done(err, result) { if (err) { // Return error postMessage({ action: 'error', id: job.id, err: err.message ? err.message : err }); return; } // Return upgraded content postMessage({ action: 'done', id: job.id, params: result }); }); }, libraryLoaded: function (data) { var library = data.library; if (library.upgradesScript) { try { importScripts(library.upgradesScript); } catch (err) { libraryLoadedCallback(err); return; } } libraryLoadedCallback(null, data.library); } }; /** * Handle messages from our master */ onmessage = function (event) { if (event.data.action !== undefined && messageHandlers[event.data.action]) { messageHandlers[event.data.action].call(this, event.data); } };