blob: 95126cca5d6587d93a8a67d1a027f808c8e2cda3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
package fzf
import "sync"
type EventType int
type Events map[EventType]interface{}
type EventBox struct {
events Events
cond *sync.Cond
ignore map[EventType]bool
}
func NewEventBox() *EventBox {
return &EventBox{
events: make(Events),
cond: sync.NewCond(&sync.Mutex{}),
ignore: make(map[EventType]bool)}
}
func (b *EventBox) Wait(callback func(*Events)) {
b.cond.L.Lock()
defer b.cond.L.Unlock()
if len(b.events) == 0 {
b.cond.Wait()
}
callback(&b.events)
}
func (b *EventBox) Set(event EventType, value interface{}) {
b.cond.L.Lock()
defer b.cond.L.Unlock()
b.events[event] = value
if _, found := b.ignore[event]; !found {
b.cond.Broadcast()
}
}
// Unsynchronized; should be called within Wait routine
func (events *Events) Clear() {
for event := range *events {
delete(*events, event)
}
}
func (b *EventBox) Peak(event EventType) bool {
b.cond.L.Lock()
defer b.cond.L.Unlock()
_, ok := b.events[event]
return ok
}
func (b *EventBox) Watch(events ...EventType) {
b.cond.L.Lock()
defer b.cond.L.Unlock()
for _, event := range events {
delete(b.ignore, event)
}
}
func (b *EventBox) Unwatch(events ...EventType) {
b.cond.L.Lock()
defer b.cond.L.Unlock()
for _, event := range events {
b.ignore[event] = true
}
}
|
