ui/input: change Events to return all events at once

Single stepping events only makes sense for widgets with complex
state, e.g. the text.Editor. For the input.Events source, returning
all events in a single Events call is sufficient and more natural
for clients.

Signed-off-by: Elias Naur <mail@eliasnaur.com>

ui/text/editor.go

@@ -119,11 +119,7 @@ func (e *Editor) Next() (EditorEvent, bool) {
 	if (sdist > 0 && soff >= smax) || (sdist < 0 && soff <= smin) {
 		e.scroller.Stop()
 	}
-	for {
-		ke, ok := e.Inputs.Next(e)
-		if !ok {
-			break
-		}
+	for _, ke := range e.Inputs.Events(e) {
 		e.blinkStart = e.Config.Now()
 		switch ke := ke.(type) {
 		case key.FocusEvent: