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all: [API] deliver events one at a time to allow fine-grained event processing

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Processing one event at a time allows a widget to execute commands after
the event that triggered it, instead of after all matching events.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2023-11-24 16:46:39 -06:00
parent bce1dbd654
commit 88f5ac9cb9
14 changed files with 233 additions and 187 deletions
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io/input/router.go
+5 -17
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@@ -176,28 +176,16 @@ func (s Source) Enabled() bool {
return s.r != nil
}
// Events returns the events for the handler tag that matches one
// Event returns the next event for the handler tag that matches one
// or more of filters.
func (s Source) Events(k event.Tag, filters ...event.Filter) []event.Event {
func (s Source) Event(k event.Tag, filters ...event.Filter) (event.Event, bool) {
if !s.Enabled() {
return nil
return nil, false
}
return s.r.Events(k, filters...)
return s.r.Event(k, filters...)
}
func (q *Router) Events(k event.Tag, filters ...event.Filter) []event.Event {
var events []event.Event
for {
e, ok := q.nextEvent(k, filters...)
if !ok {
break
}
events = append(events, e)
}
return events
}
func (q *Router) nextEvent(k event.Tag, filters ...event.Filter) (event.Event, bool) {
func (q *Router) Event(k event.Tag, filters ...event.Filter) (event.Event, bool) {
h := q.stateFor(k)
q.scratchFilter.Reset()
// Record handler filters and add reset events.