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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,64 +1,75 @@ | ||
| export default class EventEmitter { | ||
| constructor() { | ||
| this.events = {}; | ||
| } | ||
| constructor() { | ||
| this.events = {}; | ||
| } | ||
|
|
||
| // Register an event handler | ||
| on(event, listener) { | ||
| /////console.log('Subscriber', event); | ||
| if (!this.events[event]) { | ||
| this.events[event] = []; | ||
| } | ||
| this.events[event].push(listener); | ||
| return ()=>this.removeListener(event, listener); | ||
| } | ||
| stats() { | ||
| return Object.fromEntries(Object.entries(this.events).map(([name, listeners])=>[name,listeners.length])) | ||
| } | ||
|
|
||
| // Register a one-time event handler | ||
| once(event, listener) { | ||
| const onceWrapper = (...args) => { | ||
| listener(...args); | ||
| this.removeListener(event, onceWrapper); | ||
| }; | ||
| this.on(event, onceWrapper); | ||
| // Register an event handler | ||
| on(event, listener) { | ||
| if (!this.events[event]) { | ||
| this.events[event] = []; | ||
| } | ||
| this.events[event].push(listener); | ||
| return () => this.removeListener(event, listener); | ||
| } | ||
|
|
||
| // Trigger an event | ||
| emit(event, ...args) { | ||
| //console.log('Emitting...', event, ...args); | ||
| if (this.events[event]) { | ||
| this.events[event].forEach(listener => { | ||
| listener(...args); | ||
| }); | ||
| } | ||
| } | ||
| // Register a one-time event handler | ||
| once(event, listener) { | ||
| const onceWrapper = (...args) => { | ||
| listener(...args); | ||
| this.removeListener(event, onceWrapper); | ||
| }; | ||
| this.on(event, onceWrapper); | ||
| } | ||
|
|
||
| // Remove a specific listener | ||
| removeListener(event, handlerToRemove) { | ||
| if (this.events[event]) { | ||
| this.events[event] = this.events[event].filter(handler => handler !== handlerToRemove); | ||
| } | ||
| // Trigger an event | ||
| emit(event, ...args) { | ||
| if (this.events[event]) { | ||
| this.events[event].forEach((listener) => { | ||
| listener(...args); | ||
| }); | ||
| } | ||
|
|
||
|
|
||
| // Remove all listeners for a specific event | ||
| removeAllListeners(event = null) { | ||
| if (event) { | ||
| if (this.events[event]) { | ||
| delete this.events[event]; | ||
| } | ||
| } else { | ||
| // Remove all listeners for all events | ||
| this.events = {}; | ||
| } | ||
| if (this.events["*"]) { | ||
| this.events["*"].forEach((listener) => { | ||
| listener(event, ...args); | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| send(...a){ | ||
| this.emit(...a) | ||
| } | ||
| off(...a){ | ||
| this.removeListener(...a) | ||
| // Remove a specific listener | ||
| removeListener(event, handlerToRemove) { | ||
| console.log(`removeListener`, event) | ||
| if (this.events[event]) { | ||
| this.events[event] = this.events[event].filter( | ||
| (handler) => handler !== handlerToRemove, | ||
| ); | ||
| } | ||
| destroy(){ | ||
| this.removeAllListeners(); | ||
| } | ||
|
|
||
| // Remove all listeners for a specific event | ||
| removeAllListeners(event = null) { | ||
| if (event) { | ||
| if (this.events[event]) { | ||
| console.log(`removeAllListener`, event) | ||
| delete this.events[event]; | ||
| } | ||
| } else { | ||
| // Remove all listeners for all events | ||
| Object.keys(this.events).map(o=>console.log(`removeAllListener`, o)) | ||
| this.events = {}; | ||
| } | ||
| } | ||
|
|
||
| send(...a) { | ||
| this.emit(...a); | ||
| } | ||
| off(...a) { | ||
| this.removeListener(...a); | ||
| } | ||
| destroy() { | ||
| this.removeAllListeners(); | ||
| } | ||
| } |
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