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mirror of https://github.com/Jermolene/TiddlyWiki5 synced 2024-11-16 06:44:50 +00:00
TiddlyWiki5/plugins/tiddlywiki/tiddlyweb/sse-client.js
2021-05-04 17:31:37 +01:00

57 lines
1.3 KiB
JavaScript

/*\
title: $:/plugins/tiddlywiki/tiddlyweb/sse-client.js
type: application/javascript
module-type: startup
GET /recipes/default/tiddlers/:title
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
exports.name = "/events/plugins/tiddlywiki/tiddlyweb";
exports.after = ["startup"];
exports.synchronous = true;
exports.platforms = ["browser"];
exports.startup = function() {
// Make sure we're actually being used
if($tw.syncadaptor.name !== "tiddlyweb") {
return;
}
// Get the mount point in case a path prefix is used
var host = $tw.syncadaptor.getHost();
// Make sure it ends with a slash (it usually does)
if(host[host.length - 1] !== "/") {
host += "/";
}
// Setup the event listener
setupEvents(host);
};
function debounce(callback) {
var timeout = null;
return function() {
clearTimeout(timeout);
timeout = setTimeout(callback,$tw.syncer.throttleInterval);
};
}
function setupEvents(host) {
if(window.EventSource) {
var events = new EventSource(host + "events/plugins/tiddlywiki/tiddlyweb");
var debouncedSync = debounce($tw.syncer.syncFromServer.bind($tw.syncer));
events.addEventListener("change",debouncedSync);
events.onerror = function() {
events.close();
setTimeout(function() {
setupEvents(host);
},$tw.syncer.errorRetryInterval);
};
}
}
})();