Files
8bitMyGoUI/data/infinitelist.go
T
ZacharyZhang-NY 03680980da Add data components 151-175; clear MyGo row highlights
Lists, tables, trees, grids, inventories and records in data/.
Outline and GridView build on ui.List: ui.Outline strokes its arrows
and ui.GridView spaces and tints items. The pixel theme keeps MyGo's
row highlights clear so scrolled rows stay on whole dots; off lists
take a veil against the wheel. Adds Canvas.Silhouette, SwitchOptions
Label and exports Rarity.Slot.
2026-10-11 22:29:07 -04:00

70 lines
1.7 KiB
Go

package data
import (
"log/slog"
"github.com/egoist/mygo/ui"
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/feedback"
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
)
type InfiniteListOptions struct {
// Height is in dots; zero means 120.
Height int
// Done hides the LOADING row: there is no more.
Done bool
}
type InfiniteListResult struct {
Element *ui.Element
// More asks for rows past the n there are.
More bool
}
type moreKey struct{}
// asking remembers the length last asked past.
type asking struct {
at int
more bool
list ui.ListState
}
// InfiniteList asks for more when its LOADING row shows.
func InfiniteList(c *ui.Context, text string, n int, o InfiniteListOptions, row func(i int)) InfiniteListResult {
k := pixel.K(c)
box := ui.Box(c)
s := ui.Local(box, moreKey{}, func() asking { return asking{at: -1} })
res := InfiniteListResult{Element: box, More: s.more}
s.more = false
rows := n + 1
if o.Done {
rows = n
}
var e *ui.Element
box.Children(func() {
e = ui.List(c, &s.list, rows, pixel.Lazy(c, func(i int) {
if i < n {
row(i)
return
}
// Built as it nears the view: ask once per length.
if s.at != n {
s.at, s.more = n, true
c.Invalidate()
}
ui.Row(c).Gap(k.D(4)).Padding(k.D(2), k.D(6)).AlignItems(ui.Center).Children(func() {
feedback.DotsLoader(c, k.Msg("loading"), feedback.DotsLoaderOptions{})
pixel.Text(c, k.Msg("loading"), pixel.TextOptions{Slot: pixel.Faint})
})
})).Padding(0, k.D(3)).Height(k.D(pixel.Or("InfiniteList Height", o.Height, 120))).Label(text)
veil(c, pixel.Current(c).Inert)
})
well(c, box, pixel.State{Focus: e.FocusRing(false).FocusVisible()})
if res.More {
slog.Debug("8bit: list wants more", "label", text, "rows", n)
}
return res
}