/
table.go
71 lines (57 loc) · 1.19 KB
/
table.go
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package goevent
import "sync"
// Table is an event table.
type Table interface {
Trigger(name string, args ...interface{}) error
// f is a function
On(name string, f interface{}) error
Off(name string, f interface{}) error
// Destroy a event
Destroy(name string) error
}
type table struct {
events map[string]Event
mu sync.RWMutex
}
// NewTable creates a new event table.
func NewTable() Table {
return &table{
events: map[string]Event{},
}
}
func (t *table) Trigger(name string, args ...interface{}) error {
t.mu.RLock()
defer t.mu.RUnlock()
ev, ok := t.events[name]
if !ok {
return newEventNotDefined(name)
}
return ev.Trigger(args...)
}
func (t *table) On(name string, f interface{}) error {
t.mu.Lock()
defer t.mu.Unlock()
ev, ok := t.events[name]
if !ok {
ev = New()
t.events[name] = ev
}
return ev.On(f)
}
func (t *table) Off(name string, f interface{}) error {
t.mu.Lock()
defer t.mu.Unlock()
e, ok := t.events[name]
if !ok {
return newEventNotDefined(name)
}
return e.Off(f)
}
func (t *table) Destroy(name string) error {
if _, ok := t.events[name]; !ok {
return newEventNotDefined(name)
}
delete(t.events, name)
return nil
}
var _ Table = &table{}