Files
MujicaUI/feedback/loading_overlay.go
ZacharyZhang-NYandClaude Opus 5.5 bcce34cda1 Upgrade MyGo to v0.5.5
MyGo v0.5.5 returns ui.Element as a checked value handle instead of a
pointer. Migrated with `mygo migrate-ui`, then fixed what the codemod
leaves to review:

- Element nil checks become .Valid(); absent elements are ui.Element{}.
- Input handlers and paint callbacks run outside the build pass, where
  elements expire and Context methods are inert: read IsDisabled into a
  local during the build, keep a ui.Handle for Focus, use c.Services()
  for clipboard access, create ui.Local state during the build.
- Add core.AutoFocus: v0.5.5 records an overlay's opener after its
  content builds, so same-frame autofocus lost focus restore on close.
  It focuses one frame later; cascader rows defer their focus likewise.
- core.OverlayLayer identifies build passes by the root element, not
  c.Now(), which repeats across passes and under the Tester clock.
- Context menus survive the opening press counted as PressedOutside;
  split button tooltip no longer reorders its open menu; disabled
  menubar rows pass presses to the panel; Form defers blur-started
  async checks so the growing message no longer moves Submit away
  from the release; Combobox drops its disabled copy now that MyGo
  blocks typing under a disabled wrapper (canary flipped to a guard).
- The Tester clock is virtual: tests use Advance/Now instead of
  time.Sleep/time.Now and read element state inside the view. The web
  mirror advances the clock to wall time before each frame and input.
- AGENTS.md and docs describe the value Element API and the new pin.

Snapshot goldens are darwin-only and were not re-verified here.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-17 01:37:54 -04:00

95 lines
2.8 KiB
Go

package feedback
import (
"cmp"
"log/slog"
"github.com/egoist/mygo/ui"
"git.zacharyzhang.com/ZacharyZhang-NY/MujicaUI/core"
"git.zacharyzhang.com/ZacharyZhang-NY/MujicaUI/input"
"git.zacharyzhang.com/ZacharyZhang-NY/MujicaUI/internal"
"git.zacharyzhang.com/ZacharyZhang-NY/MujicaUI/theme"
)
// LoadingOverlayOptions configure a LoadingOverlay.
type LoadingOverlayOptions struct {
// Label explains the wait; empty uses "Loading…".
Label string
// Cancel labels a button that reports Canceled; empty shows none.
Cancel string
}
// LoadingOverlayResult is what a LoadingOverlay built and reported this frame.
type LoadingOverlayResult struct {
Element ui.Element
// Canceled reports the cancel button or Escape while loading.
Canceled bool
}
// LoadingOverlay covers content while loading, blocking input to that region only.
func LoadingOverlay(c *ui.Context, loading bool, opts LoadingOverlayOptions, content func()) LoadingOverlayResult {
if content == nil {
panic("mujica: LoadingOverlay needs content")
}
k := core.Tokens(c)
u := core.Density(c).Unit()
label := cmp.Or(opts.Label, core.Msg(c, "loading_overlay.label"))
var res LoadingOverlayResult
box := ui.Box(c)
was := ui.Local(box, "loading_overlay.loading", func() bool { return false })
if loading != *was {
slog.Debug("mujica: loading_overlay changed", "loading", loading)
if loading {
c.Announce(label)
}
*was = loading
}
box.Children(func() {
inner := ui.Column(c).FillWidth().Disabled(loading)
inner.Children(content)
if !loading {
return
}
held := inner.FocusWithin()
scrim := ui.Column(c).Absolute().Left(0).Top(0).Right(0).Bottom(0).Center().Padding(u * 4).
Background(k.Background.Alpha(0.5)).Radius(theme.CardRadius)
scrim.Transition(ui.ElementTransition{Duration: theme.StateDuration, Enter: &ui.Motion{}, Exit: &ui.Motion{}})
scrim.Children(func() {
panel := ui.Column(c).AlignItems(ui.Center).Gap(u*3).Padding(u*4, u*6).Radius(theme.PopupRadius).
Background(k.Surface).Border(theme.BorderWidth, k.Border).Role(ui.RoleStatus).Label(label)
if opts.Cancel == "" {
// Without a button the panel keeps the focus in the region.
internal.Ring(panel.Focusable(), k.Focus, theme.PopupRadius)
if held {
panel.Focus()
}
}
panel.Children(func() {
ui.Row(c).Gap(u * 2).AlignItems(ui.Center).Children(func() {
core.Spinner(c, core.SpinnerOptions{Size: 20, Label: label})
ui.Text(c, label).TextColor(k.Text)
})
if opts.Cancel == "" {
return
}
b := input.Button(c, opts.Cancel, input.ButtonOptions{Variant: input.Secondary})
if held {
b.Focus()
}
if b.Clicked() {
res.Canceled = true
}
})
if opts.Cancel != "" && panel.Shortcut(0, ui.KeyEscape) {
res.Canceled = true
}
})
})
if res.Canceled {
slog.Debug("mujica: loading_overlay canceled")
}
res.Element = box
return res
}