Files
8bitMyGoUI/data/list.go
T
ZacharyZhang-NY 455f5f2a05 Add chat components 321-345; named List rows, inert scroll views
Speech bubbles, a chat log that follows its end, a composer that sends
on Enter, typing dots, chat and channel lists, read receipts,
reactions, emoji and sticker pickers, mentions, date and unread rules,
system lines, member lists, user cards, a mailbox, mail reader and
letter, a notification bell, call controls, a voice meter, attachment
chips, link previews and polls.

pixel's editor takes EnterSends; display's Bubble takes a Fill and
exports EmojiSprite. data.List names its rows, which also lets typing
choose one. layout.ScrollArea and input.TextArea hold still under
Inert, and an inert scroll view leaves the Tab order until it wakes.
2026-10-12 05:02:36 -04:00

62 lines
1.7 KiB
Go

package data
import (
"log/slog"
"github.com/egoist/mygo/ui"
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
)
type ListOptions struct {
// Height is in dots; zero means 120.
Height int
Disabled bool
}
type ListResult struct {
Element *ui.Element
// Submitted is Enter or a double click on a row.
Changed, Submitted bool
}
type listKey struct{}
// List is a virtual list; ▶ marks the chosen row.
func List(c *ui.Context, text string, n int, selected *int, o ListOptions, name func(i int) string, row func(i int)) ListResult {
k := pixel.K(c)
off := o.Disabled || pixel.Current(c).Inert
box := ui.Box(c)
st := ui.Local(box, listKey{}, func() ui.ListState { return ui.ListState{} })
// Names read aloud and let typing choose a row.
st.Selected, st.Label = selected, name
if off {
st.Selected = nil
}
var e *ui.Element
box.Children(func() {
e = ui.List(c, st, n, pixel.Lazy(c, func(i int) {
on := i == *selected
// The chosen row is Face: Ink reads on it always.
ui.Row(c).FillWidth().Padding(k.D(1), k.D(2), k.D(1), k.D(12)).Draw(func(p *ui.Painter, r ui.Rect) {
if on {
g := k.Canvas(p, r)
g.Rect(0, 0, g.W, g.H, pixel.Face)
g.Sprite(3, (g.H-pointer.H)/2, pointer, 0, pixel.Accent, 1)
}
}).Children(func() { row(i) })
})).Height(k.D(pixel.Or("List Height", o.Height, 120))).Label(text)
veil(c, off)
})
pixel.Park(c, e, off)
if off {
e.Description(k.Msg("disabled"))
}
well(c, box, pixel.State{Focus: e.FocusRing(false).FocusVisible(), Disabled: o.Disabled})
res := ListResult{Element: box, Changed: e.Changed(), Submitted: e.Submitted()}
if res.Changed {
slog.Debug("8bit: list", "label", text, "selected", *selected)
}
return res
}