2024-01-06 12:14:49 +01:00
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class Events {
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2024-01-06 11:47:09 +01:00
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on(event, callback) {
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2024-01-06 17:02:39 +01:00
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if (event.includes(" ")) {
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2024-01-06 15:56:40 +01:00
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for (var name of event.split(" ")) {
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2024-01-06 11:51:57 +01:00
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this.on(name, callback);
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}
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2024-01-06 11:47:09 +01:00
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} else {
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2024-01-06 15:56:40 +01:00
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this._callbacks ||= {};
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this._callbacks[event] ||= [];
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this._callbacks[event].push(callback);
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2024-01-06 11:47:09 +01:00
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}
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return this;
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2024-01-06 12:14:49 +01:00
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}
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2013-10-24 20:25:52 +02:00
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2024-01-06 11:47:09 +01:00
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off(event, callback) {
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let callbacks, index;
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2024-01-06 17:02:39 +01:00
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if (event.includes(" ")) {
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2024-01-06 15:56:40 +01:00
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for (var name of event.split(" ")) {
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2024-01-06 11:51:57 +01:00
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this.off(name, callback);
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}
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} else if (
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(callbacks = this._callbacks?.[event]) &&
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2024-01-06 11:51:57 +01:00
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(index = callbacks.indexOf(callback)) >= 0
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) {
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2024-01-06 11:47:09 +01:00
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callbacks.splice(index, 1);
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2024-01-06 11:51:57 +01:00
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if (!callbacks.length) {
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delete this._callbacks[event];
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}
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2024-01-06 11:47:09 +01:00
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}
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return this;
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2024-01-06 12:14:49 +01:00
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}
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2013-10-24 20:25:52 +02:00
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2024-01-06 11:47:09 +01:00
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trigger(event, ...args) {
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this.eventInProgress = { name: event, args };
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2024-01-06 12:54:13 +01:00
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const callbacks = this._callbacks?.[event];
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if (callbacks) {
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2024-01-06 17:23:46 +01:00
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for (const callback of callbacks.slice(0)) {
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2024-01-06 11:51:57 +01:00
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if (typeof callback === "function") {
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2024-01-06 12:54:13 +01:00
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callback(...args);
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2024-01-06 11:51:57 +01:00
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}
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}
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2024-01-06 11:47:09 +01:00
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}
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this.eventInProgress = null;
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if (event !== "all") {
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this.trigger("all", event, ...args);
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2024-01-06 11:51:57 +01:00
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}
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2024-01-06 11:47:09 +01:00
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return this;
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2024-01-06 12:14:49 +01:00
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}
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2013-10-24 20:25:52 +02:00
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2024-01-06 11:47:09 +01:00
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removeEvent(event) {
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if (this._callbacks != null) {
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2024-01-06 15:56:40 +01:00
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for (var name of event.split(" ")) {
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2024-01-06 11:51:57 +01:00
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delete this._callbacks[name];
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}
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2024-01-06 11:47:09 +01:00
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}
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return this;
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2024-01-06 12:14:49 +01:00
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}
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}
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