Upgrade MyGo to v0.5.5

Elements are now pass-scoped value handles: tests that read bounds
after a frame bind a ui.Handle. pixel tells frames apart by the build
pass's root, since the Tester clock no longer moves on its own.

Fix the regressions the upgrade brought:
- Clipboard reads in input handlers go through c.Services().
- MyGo notes an overlay's opener after building it, so AutoFocus
  inside lost it; pixel.AutoFocus focuses through a Handle, and
  archtest bans the raw call. Dialogs hand the focus back again.
- Elements around a press stay hovered: Tooltip tells a press-given
  focus by focus arriving under the pointer.
- The web host moves the Tester clock with real time, at most 500 ms
  a call, and gives components the real clock.

The gallery's source index also accepts CRLF checkouts.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

desk/appwindow.go

@@ -20,7 +20,7 @@ type AppWindowOptions struct {
 }
 
 type AppWindowResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Closed is the close box; Moved, a drag or arrow.
 	Closed, Moved bool
 }
@@ -64,7 +64,7 @@ func AppWindow(c *ui.Context, title string, x, y *int, o AppWindowOptions, conte
 		g.Frame(0, 0, g.W, g.H, pixel.Raised, pixel.Face)
 	}).Children(func() {
 		ui.Row(c).FillWidth().Gap(k.D(2)).AlignItems(ui.Center).Children(func() {
-			shell, base, st := pixel.Shell(c, func() *ui.Element {
+			shell, base, st := pixel.Shell(c, func() ui.Element {
 				return ui.Box(c).Focusable().Role(ui.RoleGroup).Label(title).Description(k.Msg("arrows_move")).Disabled(o.Disabled)
 			})
 			if !base.IsDisabled() {

desk/bootscreen.go

@@ -19,7 +19,7 @@ type BootScreenOptions struct {
 }
 
 type BootScreenResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Done is the frame the last line shows.
 	Done bool
 }

desk/calculator.go

@@ -16,7 +16,7 @@ type CalculatorOptions struct {
 }
 
 type CalculatorResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Changed is a key pressed this frame.
 	Changed bool
 }

desk/clipboardpanel.go

@@ -18,7 +18,7 @@ type ClipboardPanelOptions struct {
 }
 
 type ClipboardPanelResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Copied is the clip copied this frame, else -1.
 	Copied int
 }
@@ -58,7 +58,7 @@ func ClipboardPanel(c *ui.Context, text string, clips []string, o ClipboardPanel
 		for i, clip := range clips {
 			// Keyed by the clip: new ones come in on top.
 			ui.Box(c).Key(clip).FillWidth().Children(func() {
-				shell, base, st := pixel.Shell(c, func() *ui.Element {
+				shell, base, st := pixel.Shell(c, func() ui.Element {
 					return ui.Box(c).Focusable().Role(ui.RoleButton).Label(clip).Description(k.Msg("copy")).Disabled(o.Disabled)
 				})
 				if !base.IsDisabled() && base.Clicked() {

desk/controlpanel.go

@@ -20,7 +20,7 @@ type ControlPanelOptions struct {
 }
 
 type ControlPanelResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Opened is the applet opened this frame, else -1.
 	Opened int
 }

desk/desktop.go

@@ -13,7 +13,7 @@ type DesktopOptions struct {
 }
 
 // Desktop lays icons down a dithered wallpaper, column by column.
-func Desktop(c *ui.Context, text string, o DesktopOptions, icons func()) *ui.Element {
+func Desktop(c *ui.Context, text string, o DesktopOptions, icons func()) ui.Element {
 	k := pixel.K(c)
 	o.Wallpaper.name(k)
 	w, h := pixel.Or("Desktop Width", o.Width, 320), pixel.Or("Desktop Height", o.Height, 200)

desk/desktopicon.go

@@ -15,7 +15,7 @@ type DesktopIconOptions struct {
 }
 
 type DesktopIconResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Clicked chooses it; Opened is a double click or Enter.
 	Clicked, Opened bool
 }
@@ -29,7 +29,7 @@ func DesktopIcon(c *ui.Context, label string, icon *pixel.Sprite, o DesktopIconO
 	if label == "" {
 		panic("desk: DesktopIcon has no label")
 	}
-	shell, base, st := pixel.Shell(c, func() *ui.Element {
+	shell, base, st := pixel.Shell(c, func() ui.Element {
 		return ui.Box(c).Focusable().Role(ui.RoleButton).Label(label).Disabled(o.Disabled)
 	})
 	res := DesktopIconResult{Element: shell}

desk/diskdefrag.go

@@ -19,7 +19,7 @@ type DiskDefragOptions struct {
 }
 
 type DiskDefragResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Done is the frame the last block falls in place.
 	Done bool
 }

desk/dock.go

@@ -20,7 +20,7 @@ type DockOptions struct {
 }
 
 type DockResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Launched is the app pressed this frame, else -1.
 	Launched int
 }
@@ -68,7 +68,7 @@ func Dock(c *ui.Context, text string, apps []DockApp, o DockOptions) DockResult
 			for i, a := range apps {
 				// Keyed by name: apps come and go.
 				ui.Box(c).Key(a.Name).Children(func() {
-					shell, base, st := pixel.Shell(c, func() *ui.Element {
+					shell, base, st := pixel.Shell(c, func() ui.Element {
 						return ui.Box(c).Focusable().Role(ui.RoleButton).Label(a.Name).Disabled(o.Disabled)
 					})
 					up := st.Hover || st.Focus

desk/lockscreen.go

@@ -14,7 +14,7 @@ import (
 type LockScreenOptions struct{}
 
 type LockScreenResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Unlocked is a key or click opening it this frame.
 	Unlocked bool
 }
@@ -40,7 +40,7 @@ func LockScreen(c *ui.Context, text string, open *bool, o LockScreenOptions) Loc
 			g.Text((g.W-pixel.Measure(press))/2, g.H-3*pixel.LineHeight, press, pixel.Accent, 1)
 		}
 	})
-	if panel != nil {
+	if panel.Valid() {
 		panel.Description(clock + ", " + date + ", " + press)
 	}
 	if woke {

desk/minesweeper.go

@@ -23,7 +23,7 @@ type MinesweeperOptions struct {
 }
 
 type MinesweeperResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Won or Lost is the game ending this frame.
 	Won, Lost bool
 	// Flagged is a flag set or lifted; Restarted, the face.

desk/notepad.go

@@ -18,7 +18,7 @@ type NotepadOptions struct {
 }
 
 type NotepadResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Saved is FILE, SAVE chosen this frame.
 	Changed, Saved bool
 }

desk/rundialog.go

@@ -19,7 +19,7 @@ type RunDialogOptions struct {
 }
 
 type RunDialogResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Canceled is CANCEL, the close box or Escape.
 	Changed, Submitted, Canceled bool
 }

desk/screensaver.go

@@ -13,7 +13,7 @@ import (
 type ScreensaverOptions struct{}
 
 type ScreensaverResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Woke is the input that ended it this frame.
 	Woke bool
 }

desk/shutdownscreen.go

@@ -14,7 +14,7 @@ type ShutdownScreenOptions struct {
 }
 
 // ShutdownScreen says it is safe to turn off the computer.
-func ShutdownScreen(c *ui.Context, o ShutdownScreenOptions) *ui.Element {
+func ShutdownScreen(c *ui.Context, o ShutdownScreenOptions) ui.Element {
 	k := pixel.K(c)
 	w, h := pixel.Or("ShutdownScreen Width", o.Width, 320), pixel.Or("ShutdownScreen Height", o.Height, 200)
 	s := k.Msg("safe_to_turn_off")

desk/snake.go

@@ -20,7 +20,7 @@ type SnakeOptions struct {
 }
 
 type SnakeResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Score is food eaten; Started and Over are this frame's.
 	Score         int
 	Started, Over bool
@@ -47,7 +47,7 @@ func Snake(c *ui.Context, text string, o SnakeOptions) SnakeResult {
 	if cols < 6 || rows < 4 {
 		panic(fmt.Sprintf("desk: Snake %d×%d is too small", cols, rows))
 	}
-	shell, base, st := pixel.Shell(c, func() *ui.Element {
+	shell, base, st := pixel.Shell(c, func() ui.Element {
 		return ui.Box(c).Focusable().Role(ui.RoleGroup).Label(text).Disabled(o.Disabled)
 	})
 	s := ui.Local(shell, snakeKey{}, func() pit { return pit{} })

desk/startmenu.go

@@ -25,7 +25,7 @@ type StartMenuOptions struct {
 }
 
 type StartMenuResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Launched is the program run this frame, as "GAMES/SNAKE".
 	Launched string
 }
@@ -148,9 +148,9 @@ func (m *start) keys(short func(ui.Modifiers, ui.Key) bool, ps []Program) string
 }
 
 // list shows each open level beside its parent row.
-func (m *start) list(c *ui.Context, k pixel.Kit, anchor *ui.Element, ps []Program) string {
+func (m *start) list(c *ui.Context, k pixel.Kit, anchor ui.Element, ps []Program) string {
 	run := ""
-	ui.PopoverBase(c, anchor, &m.open, func(panel *ui.Element) {
+	ui.PopoverBase(c, anchor, &m.open, func(panel ui.Element) {
 		// Only a pointer that moves lights the row under it.
 		px, py, over := panel.PointerPosition()
 		moved := over && [2]float32{px, py} != m.ptr

desk/taskbar.go

@@ -21,7 +21,7 @@ type TaskbarOptions struct {
 }
 
 type TaskbarResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Changed is a window button pressed; Launched a program.
 	Changed  bool
 	Launched string

desk/trayicons.go

@@ -21,7 +21,7 @@ type TrayIconsOptions struct {
 }
 
 type TrayIconsResult struct {
-	Element *ui.Element
+	Element ui.Element
 	// Clicked is the icon pressed this frame, else -1.
 	Clicked int
 }
@@ -43,7 +43,7 @@ func TrayIcons(c *ui.Context, text string, icons []TrayIcon, o TrayIconsOptions)
 			// Keyed by tip: icons come and go.
 			ui.Box(c).Key(t.Tip).Children(func() {
 				overlay.Tooltip(c, t.Tip, overlay.TooltipOptions{}, func() {
-					shell, base, st := pixel.Shell(c, func() *ui.Element {
+					shell, base, st := pixel.Shell(c, func() ui.Element {
 						return ui.Box(c).Focusable().Role(ui.RoleButton).Label(t.Tip).Disabled(o.Disabled)
 					})
 					if !base.IsDisabled() && base.Clicked() {

desk/veil.go

@@ -15,7 +15,7 @@ type wake struct {
 }
 
 // cover fills the window; keys, clicks, long moves end it.
-func cover(c *ui.Context, k pixel.Kit, text string, open *bool, moves bool, draw func(g pixel.Canvas)) (anchor, panel *ui.Element, woke bool) {
+func cover(c *ui.Context, k pixel.Kit, text string, open *bool, moves bool, draw func(g pixel.Canvas)) (anchor, panel ui.Element, woke bool) {
 	anchor = ui.Box(c).Role(ui.RoleNone)
 	st := ui.Local(anchor, wakeKey{}, func() wake { return wake{} })
 	was := *open
@@ -25,7 +25,7 @@ func cover(c *ui.Context, k pixel.Kit, text string, open *bool, moves bool, draw
 	if !*open {
 		*st = wake{}
 	}
-	panel = ui.DialogBase(c, open, func(back, panel *ui.Element) {
+	panel = ui.DialogBase(c, open, func(back, panel ui.Element) {
 		back.Draw(func(p *ui.Painter, r ui.Rect) { draw(k.Canvas(p, r)) })
 		back.HandleInput(func(ev ui.InputEvent) bool {
 			// Any button and the wheel end it, as keys do.

desk/wallpaperpicker.go

@@ -13,7 +13,7 @@ type WallpaperPickerOptions struct {
 }
 
 type WallpaperPickerResult struct {
-	Element *ui.Element
+	Element ui.Element
 	Changed bool
 }