io/input,io/key: [API] replace SnippetOp with command

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

internal/ops/ops.go

@@ -82,7 +82,6 @@ const (
 	TypeSemanticClass
 	TypeSemanticSelected
 	TypeSemanticEnabled
-	TypeSnippet
 	TypeActionInput
 )
 
@@ -164,7 +163,6 @@ const (
 	TypeSemanticClassLen    = 2
 	TypeSemanticSelectedLen = 2
 	TypeSemanticEnabledLen  = 2
-	TypeSnippetLen          = 1 + 4 + 4
 	TypeActionInputLen      = 1 + 1
 )
 
@@ -444,7 +442,6 @@ var opProps = [0x100]opProp{
 	TypeSemanticClass:    {Size: TypeSemanticClassLen, NumRefs: 0},
 	TypeSemanticSelected: {Size: TypeSemanticSelectedLen, NumRefs: 0},
 	TypeSemanticEnabled:  {Size: TypeSemanticEnabledLen, NumRefs: 0},
-	TypeSnippet:          {Size: TypeSnippetLen, NumRefs: 2},
 	TypeActionInput:      {Size: TypeActionInputLen, NumRefs: 0},
 }
 

io/input/key.go

@@ -315,9 +315,9 @@ func (q *keyQueue) editorState() EditorState {
 	return s
 }
 
-func (q *keyQueue) snippetOp(op key.SnippetOp) {
-	if op.Tag == q.focus {
-		q.content.Snippet = op.Snippet
+func (q *keyQueue) setSnippet(req key.SnippetCmd) {
+	if req.Tag == q.focus {
+		q.content.Snippet = req.Snippet
 	}
 }
 

io/input/router.go

@@ -219,6 +219,8 @@ func (q *Router) executeCommands() {
 			q.key.queue.Focus(req.Tag, &q.handlers)
 		case key.SoftKeyboardCmd:
 			q.key.queue.softKeyboard(req.Show)
+		case key.SnippetCmd:
+			q.key.queue.setSnippet(req)
 		}
 	}
 	q.commands = nil
@@ -518,18 +520,6 @@ func (q *Router) collect() {
 			b := pc.currentAreaBounds()
 			pc.keyInputOp(op)
 			kq.inputOp(op, t, a, b)
-		case ops.TypeSnippet:
-			op := key.SnippetOp{
-				Tag: encOp.Refs[0].(event.Tag),
-				Snippet: key.Snippet{
-					Range: key.Range{
-						Start: int(int32(bo.Uint32(encOp.Data[1:]))),
-						End:   int(int32(bo.Uint32(encOp.Data[5:]))),
-					},
-					Text: *(encOp.Refs[1].(*string)),
-				},
-			}
-			kq.snippetOp(op)
 
 		// Semantic ops.
 		case ops.TypeSemanticLabel:

io/key/key.go

@@ -10,7 +10,6 @@ events.
 package key
 
 import (
-	"encoding/binary"
 	"strings"
 
 	"gioui.org/f32"
@@ -45,6 +44,12 @@ type SelectionCmd struct {
 	Caret
 }
 
+// SnippetCmd updates the content snippet for an input handler.
+type SnippetCmd struct {
+	Tag event.Tag
+	Snippet
+}
+
 // Set is an expression that describes a set of key combinations, in the form
 // "<modifiers>-<keyset>|...".  Modifiers are separated by dashes, optional
 // modifiers are enclosed by parentheses.  A key set is either a literal key
@@ -61,12 +66,6 @@ type SelectionCmd struct {
 //   - Shift-(Ctrl)-A matches A if shift is pressed, and optionally ctrl.
 type Set string
 
-// SnippetOp updates the content snippet for an input handler.
-type SnippetOp struct {
-	Tag event.Tag
-	Snippet
-}
-
 // Range represents a range of text, such as an editor's selection.
 // Start and End are in runes.
 type Range struct {
@@ -335,14 +334,6 @@ func (h InputOp) Add(o *op.Ops) {
 	data[1] = byte(h.Hint)
 }
 
-func (s SnippetOp) Add(o *op.Ops) {
-	data := ops.Write2String(&o.Internal, ops.TypeSnippetLen, s.Tag, s.Text)
-	data[0] = byte(ops.TypeSnippet)
-	bo := binary.LittleEndian
-	bo.PutUint32(data[1:], uint32(s.Range.Start))
-	bo.PutUint32(data[5:], uint32(s.Range.End))
-}
-
 func (EditEvent) ImplementsEvent()      {}
 func (Event) ImplementsEvent()          {}
 func (FocusEvent) ImplementsEvent()     {}
@@ -352,6 +343,7 @@ func (SelectionEvent) ImplementsEvent() {}
 func (FocusCmd) ImplementsCommand()        {}
 func (SoftKeyboardCmd) ImplementsCommand() {}
 func (SelectionCmd) ImplementsCommand()    {}
+func (SnippetCmd) ImplementsCommand()      {}
 
 func (m Modifiers) String() string {
 	var strs []string

widget/editor.go

@@ -554,7 +554,7 @@ func (e *Editor) Layout(gtx layout.Context, lt *text.Shaper, font font.Font, siz
 	return e.layout(gtx, textMaterial, selectMaterial)
 }
 
-// updateSnippet adds a key.SnippetOp if the snippet content or position
+// updateSnippet queues a key.SnippetCmd if the snippet content or position
 // have changed. off and len are in runes.
 func (e *Editor) updateSnippet(gtx layout.Context, start, end int) {
 	if start > end {
@@ -594,10 +594,7 @@ func (e *Editor) updateSnippet(gtx layout.Context, start, end int) {
 		return
 	}
 	e.ime.snippet = newSnip
-	key.SnippetOp{
-		Tag:     &e.eventKey,
-		Snippet: newSnip,
-	}.Add(gtx.Ops)
+	gtx.Queue(key.SnippetCmd{Tag: &e.eventKey, Snippet: newSnip})
 }
 
 func (e *Editor) layout(gtx layout.Context, textMaterial, selectMaterial op.CallOp) layout.Dimensions {