ui/input: move Router and input queues to internal package

Now that only app.Window needs the Router, make it unavailable for
clients.

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

ui/app/internal/input/key.go

@@ -4,13 +4,14 @@ package input
 
 import (
 	"gioui.org/ui"
+	"gioui.org/ui/input"
 	"gioui.org/ui/internal/ops"
 	"gioui.org/ui/key"
 )
 
 type keyQueue struct {
-	focus    Key
-	handlers map[Key]*keyHandler
+	focus    input.Key
+	handlers map[input.Key]*keyHandler
 	reader   ui.OpsReader
 	state    key.TextInputState
 }
@@ -36,7 +37,7 @@ func (q *keyQueue) InputState() key.TextInputState {
 
 func (q *keyQueue) Frame(root *ui.Ops, events handlerEvents) {
 	if q.handlers == nil {
-		q.handlers = make(map[Key]*keyHandler)
+		q.handlers = make(map[input.Key]*keyHandler)
 	}
 	for _, h := range q.handlers {
 		h.active = false
@@ -76,15 +77,15 @@ func (q *keyQueue) Frame(root *ui.Ops, events handlerEvents) {
 	}
 }
 
-func (q *keyQueue) Push(e Event, events handlerEvents) {
+func (q *keyQueue) Push(e input.Event, events handlerEvents) {
 	if q.focus == nil {
 		return
 	}
 	events[q.focus] = append(events[q.focus], e)
 }
 
-func (q *keyQueue) resolveFocus(events handlerEvents) (Key, listenerPriority, bool) {
-	var k Key
+func (q *keyQueue) resolveFocus(events handlerEvents) (input.Key, listenerPriority, bool) {
+	var k input.Key
 	var pri listenerPriority
 	var hide bool
 loop:
@@ -111,7 +112,7 @@ loop:
 				h = new(keyHandler)
 				q.handlers[op.Key] = h
 				// Reset the handler on (each) first appearance.
-				events[op.Key] = []Event{key.FocusEvent{Focus: false}}
+				events[op.Key] = []input.Event{key.FocusEvent{Focus: false}}
 			}
 			h.active = true
 		case ops.TypeHideInput:

ui/app/internal/input/pointer.go

@@ -8,6 +8,7 @@ import (
 
 	"gioui.org/ui"
 	"gioui.org/ui/f32"
+	"gioui.org/ui/input"
 	"gioui.org/ui/internal/ops"
 	"gioui.org/ui/pointer"
 )
@@ -15,10 +16,10 @@ import (
 type pointerQueue struct {
 	hitTree  []hitNode
 	areas    []areaNode
-	handlers map[Key]*pointerHandler
+	handlers map[input.Key]*pointerHandler
 	pointers []pointerInfo
 	reader   ui.OpsReader
-	scratch  []Key
+	scratch  []input.Key
 }
 
 type hitNode struct {
@@ -28,13 +29,13 @@ type hitNode struct {
 	pass bool
 
 	// For handler nodes.
-	key Key
+	key input.Key
 }
 
 type pointerInfo struct {
 	id       pointer.ID
 	pressed  bool
-	handlers []Key
+	handlers []input.Key
 }
 
 type pointerHandler struct {
@@ -102,7 +103,7 @@ func (q *pointerQueue) collectHandlers(r *ui.OpsReader, events handlerEvents, t
 			if !ok {
 				h = new(pointerHandler)
 				q.handlers[op.Key] = h
-				events[op.Key] = []Event{pointer.Event{Type: pointer.Cancel}}
+				events[op.Key] = []input.Event{pointer.Event{Type: pointer.Cancel}}
 			}
 			h.active = true
 			h.area = area
@@ -112,7 +113,7 @@ func (q *pointerQueue) collectHandlers(r *ui.OpsReader, events handlerEvents, t
 	}
 }
 
-func (q *pointerQueue) opHit(handlers *[]Key, pos f32.Point) {
+func (q *pointerQueue) opHit(handlers *[]input.Key, pos f32.Point) {
 	// Track whether we're passing through hits.
 	pass := true
 	idx := len(q.hitTree) - 1
@@ -155,7 +156,7 @@ func (a *areaNode) hit(p f32.Point) bool {
 
 func (q *pointerQueue) init() {
 	if q.handlers == nil {
-		q.handlers = make(map[Key]*pointerHandler)
+		q.handlers = make(map[input.Key]*pointerHandler)
 	}
 }
 
@@ -176,7 +177,7 @@ func (q *pointerQueue) Frame(root *ui.Ops, events handlerEvents) {
 	}
 }
 
-func (q *pointerQueue) dropHandler(k Key) {
+func (q *pointerQueue) dropHandler(k input.Key) {
 	delete(q.handlers, k)
 	for i := range q.pointers {
 		p := &q.pointers[i]

ui/app/internal/input/router.go

@@ -4,6 +4,7 @@ package input
 
 import (
 	"gioui.org/ui"
+	"gioui.org/ui/input"
 	"gioui.org/ui/key"
 	"gioui.org/ui/pointer"
 )
@@ -17,9 +18,9 @@ type Router struct {
 	handlers handlerEvents
 }
 
-type handlerEvents map[Key][]Event
+type handlerEvents map[input.Key][]input.Event
 
-func (q *Router) Events(k Key) []Event {
+func (q *Router) Events(k input.Key) []input.Event {
 	events := q.handlers[k]
 	delete(q.handlers, k)
 	return events
@@ -34,7 +35,7 @@ func (q *Router) Frame(ops *ui.Ops) {
 	q.kqueue.Frame(ops, q.handlers)
 }
 
-func (q *Router) Add(e Event) {
+func (q *Router) Add(e input.Event) {
 	q.init()
 	switch e := e.(type) {
 	case pointer.Event:

ui/app/window.go

@@ -12,6 +12,7 @@ import (
 	"gioui.org/ui"
 	"gioui.org/ui/app/internal/gpu"
 	"gioui.org/ui/input"
+	iinput "gioui.org/ui/app/internal/input"
 	"gioui.org/ui/internal/ops"
 	"gioui.org/ui/key"
 )
@@ -46,7 +47,7 @@ type Window struct {
 	nextFrame    time.Time
 	delayedDraw  *time.Timer
 
-	router input.Router
+	router iinput.Router
 	reader ui.OpsReader
 }