39 lines
957 B
JavaScript
39 lines
957 B
JavaScript
/*
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Event stream handling.
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See https://developer.mozilla.org/en-US/docs/Web/API/EventSource for a more
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comprehensive explanation.
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*/
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events = {};
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(function($, exports) {
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var e = new EventSource('/events');
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exports.connect = function(name, elements) {
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// wrap to allow selector, jQuery object and DOM nodes
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var $elements = $(elements);
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// add listener that triggers events in DOM
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this.listen(name, function(message) {
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$elements.trigger('server-event', [message]);
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});
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};
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exports.listen = function(name, callback) {
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// add event listener to event stream
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e.addEventListener(name, function(m) {
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try {
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var message = JSON.parse(m.data);
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} catch(err) {
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console.exception("Received malformed message: ",err);
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return;
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}
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callback(message);
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});
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};
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})(jQuery, events);
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