Joffrey JAFFEUX
67 lines
1.7 KiB
JavaScript
67 lines
1.7 KiB
JavaScript
import deprecated from "discourse-common/lib/deprecated";
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import Evented from "@ember/object/evented";
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import Service from "@ember/service";
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let _events = {};
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export function clearAppEventsCache(container) {
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if (container) {
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const appEvents = container.lookup("service:app-events");
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Object.keys(_events).forEach(eventKey => {
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const event = _events[eventKey];
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event.forEach(listener => {
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if (appEvents.has(eventKey)) {
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appEvents.off(eventKey, listener.target, listener.fn);
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}
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});
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});
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}
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_events = {};
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}
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export default Service.extend(Evented, {
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on() {
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if (arguments.length === 2) {
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let [name, fn] = arguments;
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let target = {};
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_events[name] = _events[name] || [];
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_events[name].push({ target, fn });
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this._super(name, target, fn);
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} else if (arguments.length === 3) {
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let [name, target, fn] = arguments;
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_events[name] = _events[name] || [];
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_events[name].push({ target, fn });
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this._super(...arguments);
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}
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return this;
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},
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off() {
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let name = arguments[0];
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let fn = arguments[2];
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if (_events[name]) {
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if (arguments.length === 1) {
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deprecated(
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"Removing all event listeners at once is deprecated, please remove each listener individually."
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);
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_events[name].forEach(ref => {
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this._super(name, ref.target, ref.fn);
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});
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delete _events[name];
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} else if (arguments.length === 3) {
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this._super(...arguments);
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_events[name] = _events[name].filter(e => e.fn !== fn);
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if (_events[name].length === 0) delete _events[name];
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}
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}
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return this;
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}
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});
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