49 lines
1.3 KiB
Go
49 lines
1.3 KiB
Go
package server
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type EventListeners map[string][]EventListenerFunction
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type EventListenerFunction *func(string)
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// Defines all of the possible output events for a server.
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// noinspection GoNameStartsWithPackageName
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const (
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ConsoleOutputEvent = "console output"
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StatusEvent = "status"
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StatsEvent = "stats"
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)
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// Adds an event listener for the server instance.
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func (s *Server) AddListener(event string, f EventListenerFunction) {
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if s.listeners == nil {
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s.listeners = make(map[string][]EventListenerFunction)
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}
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if _, ok := s.listeners[event]; ok {
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s.listeners[event] = append(s.listeners[event], f)
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} else {
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s.listeners[event] = []EventListenerFunction{f}
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}
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}
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// Removes the event listener for the server instance.
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func (s *Server) RemoveListener(event string, f EventListenerFunction) {
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if _, ok := s.listeners[event]; ok {
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for i := range s.listeners[event] {
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if s.listeners[event][i] == f {
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s.listeners[event] = append(s.listeners[event][:i], s.listeners[event][i+1:]...)
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break
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}
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}
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}
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}
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// Emits an event to all of the active listeners for a server.
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func (s *Server) Emit(event string, data string) {
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if _, ok := s.listeners[event]; ok {
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for _, handler := range s.listeners[event] {
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go func (f EventListenerFunction, d string) {
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(*f)(d)
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}(handler, data)
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}
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}
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} |