open-consul/ui/packages/consul-ui/app/utils/dom/event-source/openable.js

35 lines
911 B
JavaScript

/**
* Wraps an EventSource so that you can `close` and `reopen`
*
* @param {Class} eventSource - EventSource class to extend from
*/
export default function(eventSource = EventSource) {
const OpenableEventSource = function(source, configuration = {}) {
eventSource.apply(this, arguments);
this.configuration = configuration;
};
OpenableEventSource.prototype = Object.assign(
Object.create(eventSource.prototype, {
constructor: {
value: OpenableEventSource,
configurable: true,
writable: true,
},
}),
{
open: function() {
switch (this.readyState) {
case 3: // CLOSING
this.readyState = 1;
break;
case 2: // CLOSED
eventSource.apply(this, [this.source, this.configuration]);
break;
}
return this;
},
}
);
return OpenableEventSource;
}