feat: enter replay mode on mouse up

pkg/cy/cmd/module.go

@@ -5,7 +5,6 @@ import (
 
 	"github.com/cfoust/cy/pkg/bind"
 	"github.com/cfoust/cy/pkg/geom"
-	"github.com/cfoust/cy/pkg/mux/screen"
 	"github.com/cfoust/cy/pkg/mux/screen/replayable"
 	"github.com/cfoust/cy/pkg/mux/stream"
 	"github.com/cfoust/cy/pkg/sessions"
@@ -39,10 +38,8 @@ func New(
 		return nil, err
 	}
 
-	terminal := screen.NewTerminal(ctx, recorder, geom.DEFAULT_SIZE)
 	replayable := replayable.New(
 		ctx,
-		terminal,
 		cmd,
 		recorder,
 		replayBinds,

pkg/emu/state.go

@@ -293,7 +293,7 @@ func (t *State) resize(cols, rows int) bool {
 		t.clear(0, 0, cols-1, rows-1)
 	}
 
-	if isAltMode(t.mode) {
+	if IsAltMode(t.mode) {
 		history, lines, _, _ := reflow(
 			altHistory,
 			altLines,
@@ -453,7 +453,7 @@ func between(val, min, max int) bool {
 	return true
 }
 
-func isAltMode(mode ModeFlag) bool {
+func IsAltMode(mode ModeFlag) bool {
 	return (mode & ModeAltScreen) != 0
 }
 
@@ -480,7 +480,7 @@ func (t *State) scrollDown(orig, n int) {
 	}
 
 	// don't save history lines on alt screen
-	if orig != 0 || isAltMode(t.mode) {
+	if orig != 0 || IsAltMode(t.mode) {
 		return
 	}
 
@@ -502,7 +502,7 @@ func (t *State) scrollDown(orig, n int) {
 func (t *State) scrollUp(orig, n int) {
 	n = clamp(n, 0, t.bottom-orig+1)
 
-	if orig == 0 && !isAltMode(t.mode) && !t.disableHistory {
+	if orig == 0 && !IsAltMode(t.mode) && !t.disableHistory {
 		for i := 0; i < n; i++ {
 			t.history = append(t.history, copyLine(t.lines[i]))
 		}

pkg/mux/screen/replayable/module.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/cfoust/cy/pkg/bind"
+	"github.com/cfoust/cy/pkg/geom"
 	"github.com/cfoust/cy/pkg/mux"
 	S "github.com/cfoust/cy/pkg/mux/screen"
 	"github.com/cfoust/cy/pkg/mux/screen/replay"
@@ -19,7 +20,7 @@ type Replayable struct {
 	util.Lifetime
 	*S.Layers
 
-	screen   mux.Screen
+	terminal *S.Terminal
 	stream   mux.Stream
 	recorder *sessions.Recorder
 	replay   *taro.Program
@@ -33,14 +34,28 @@ func (r *Replayable) Stream() mux.Stream {
 }
 
 func (r *Replayable) Screen() mux.Screen {
-	return r.screen
+	return r.terminal
+}
+
+func (r *Replayable) Send(msg mux.Msg) {
+	// We want to automatically trigger replay mode when the user scrolls
+	// up with the mouse
+	if mouse, ok := msg.(taro.MouseMsg); ok {
+		isMouseUp := mouse.Type == taro.MousePress && mouse.Button == taro.MouseWheelUp
+		if isMouseUp && !r.terminal.IsAltMode() && r.Layers.NumLayers() == 1 {
+			r.EnterReplay()
+			return
+		}
+	}
+
+	r.Layers.Send(msg)
 }
 
 func (r *Replayable) EnterReplay() {
 	r.Lock()
 	defer r.Unlock()
 
-	if r.NumLayers() > 1 {
+	if r.Layers.NumLayers() > 1 {
 		return
 	}
 
@@ -51,7 +66,7 @@ func (r *Replayable) EnterReplay() {
 		r.binds,
 	)
 
-	r.NewLayer(
+	r.Layers.NewLayer(
 		replay.Ctx(),
 		replay,
 		S.PositionTop,
@@ -64,7 +79,7 @@ func (r *Replayable) EnterReplay() {
 		for {
 			select {
 			case event := <-events:
-				r.Publish(event)
+				r.Layers.Publish(event)
 			case <-replay.Ctx().Done():
 				return
 			}
@@ -81,16 +96,16 @@ func (r *Replayable) EnterReplay() {
 
 func New(
 	ctx context.Context,
-	screen mux.Screen,
 	stream mux.Stream,
 	recorder *sessions.Recorder,
 	binds *bind.BindScope,
 ) *Replayable {
 	lifetime := util.NewLifetime(ctx)
+	terminal := S.NewTerminal(lifetime.Ctx(), recorder, geom.DEFAULT_SIZE)
 	layers := S.NewLayers()
 	layers.NewLayer(
 		lifetime.Ctx(),
-		screen,
+		terminal,
 		S.PositionTop,
 		S.WithInteractive,
 		S.WithOpaque,
@@ -99,7 +114,7 @@ func New(
 	return &Replayable{
 		Lifetime: lifetime,
 		binds:    binds,
-		screen:   screen,
+		terminal: terminal,
 		stream:   stream,
 		recorder: recorder,
 		Layers:   layers,

pkg/mux/screen/terminal.go

@@ -34,6 +34,10 @@ func (t *Terminal) Resize(size Size) error {
 	return nil
 }
 
+func (t *Terminal) IsAltMode() bool {
+	return emu.IsAltMode(t.terminal.Mode())
+}
+
 func (t *Terminal) Send(msg mux.Msg) {
 	input := make([]byte, 0)
 	mode := t.terminal.Mode()