57 lines
1.1 KiB
Go
57 lines
1.1 KiB
Go
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package events
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import (
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"sync"
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"github.com/google/uuid"
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)
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type syncEventListener struct {
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id string
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cb func(event string, data any)
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}
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type SyncEmitter struct {
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sync.Mutex
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listeners map[string][]syncEventListener
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}
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func NewSyncEventListener(cb func(event string, data any)) *syncEventListener {
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return &syncEventListener{
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id: uuid.NewString(),
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cb: cb,
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}
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}
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func NewSyncEmitter() *SyncEmitter {
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return &SyncEmitter{
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listeners: make(map[string][]syncEventListener),
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}
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}
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func (e *SyncEmitter) Emit(event string, data any) {
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e.Lock()
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defer e.Unlock()
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targets := e.listeners[event]
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for _, listener := range targets {
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listener.cb(event, data)
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}
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}
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func (e *SyncEmitter) AddListener(event string, listener syncEventListener) {
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e.Lock()
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defer e.Unlock()
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e.listeners[event] = append(e.listeners[event], listener)
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}
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func (e *SyncEmitter) RemoveListener(event string, listener syncEventListener) {
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e.Lock()
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defer e.Unlock()
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for i, l := range e.listeners[event] {
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if l.id == listener.id {
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e.listeners[event] = append(e.listeners[event][:i], e.listeners[event][i+1:]...)
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}
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}
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}
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