ZacharyZhang-NY
dd1e9597af
They returned InputResult with an Input nobody read (nil for RadioGroup).
106 lines
3.0 KiB
Go
106 lines
3.0 KiB
Go
package mujica
|
|
|
|
import (
|
|
"log/slog"
|
|
"slices"
|
|
|
|
"github.com/egoist/mygo/ui"
|
|
|
|
"mujicaui/internal"
|
|
"mujicaui/theme"
|
|
)
|
|
|
|
// RadioItem is one choice of a RadioGroup; Value is its stable identity.
|
|
type RadioItem[T comparable] struct {
|
|
Value T
|
|
Label string
|
|
Disabled bool
|
|
}
|
|
|
|
// RadioGroupOptions configure a RadioGroup.
|
|
type RadioGroupOptions struct {
|
|
// Horizontal lays the choices in a row; the default is a column.
|
|
Horizontal bool
|
|
// Label names the group for assistive technology.
|
|
Label string
|
|
Disabled bool
|
|
}
|
|
|
|
// RadioGroup chooses one item's Value into *value; arrows move the choice.
|
|
func RadioGroup[T comparable](c *ui.Context, value *T, items []RadioItem[T], opts RadioGroupOptions) ChoiceResult {
|
|
if value == nil {
|
|
panic("mujica: RadioGroup needs a value")
|
|
}
|
|
if len(items) == 0 {
|
|
panic("mujica: RadioGroup needs items")
|
|
}
|
|
seen := make(map[T]bool, len(items))
|
|
for _, it := range items {
|
|
if seen[it.Value] {
|
|
panic("mujica: RadioGroup has a duplicate value")
|
|
}
|
|
seen[it.Value] = true
|
|
}
|
|
k := Tokens(c)
|
|
d := Density(c)
|
|
var r ChoiceResult
|
|
// Disabled on a wrapper blocks the bases' clicks before they choose.
|
|
wrap := ui.Box(c).Shrink(0).Disabled(opts.Disabled)
|
|
// Keys by first appearance of each value: fmt keys would merge equal-looking values.
|
|
known := ui.Local(wrap, "values", func() []T { return nil })
|
|
wrap.Children(func() {
|
|
r.Element = ui.RadioGroup(c, func() {
|
|
for _, it := range items {
|
|
key := slices.Index(*known, it.Value)
|
|
if key < 0 {
|
|
key = len(*known)
|
|
*known = append(*known, it.Value)
|
|
}
|
|
if radioGroupItem(c, k, d, value, it, key) {
|
|
r.changed = true
|
|
slog.Debug("mujica: radio_group choose", "label", it.Label)
|
|
}
|
|
}
|
|
}).Label(opts.Label).Gap(0)
|
|
})
|
|
if opts.Horizontal {
|
|
r.Element.Row().Gap(d.Unit() * 6)
|
|
}
|
|
if wrap.IsDisabled() && wrap.FocusWithin() {
|
|
wrap.FocusRing(false).Focus()
|
|
}
|
|
return r
|
|
}
|
|
|
|
// radioGroupItem builds one radio and reports whether it was chosen.
|
|
func radioGroupItem[T comparable](c *ui.Context, k theme.Tokens, d theme.Density, value *T, it RadioItem[T], key int) bool {
|
|
// Keyed by value so focus follows the item, not its position.
|
|
var row *ui.Element
|
|
item := ui.Box(c).Key(key).Disabled(it.Disabled)
|
|
item.Children(func() {
|
|
row = ui.RadioBase(c, value, it.Value).Gap(d.Unit() * 2).MinHeight(d.ControlHeight()).FocusRing(false)
|
|
})
|
|
if item.IsDisabled() && item.FocusWithin() {
|
|
item.FocusRing(false).Focus()
|
|
}
|
|
on := *value == it.Value
|
|
hover, pressed := row.Hovered(), row.Pressed()
|
|
row.Children(func() {
|
|
bg, border := checkboxColors(k, on, hover, pressed)
|
|
dot := ui.Box(c).Size(checkboxSize, checkboxSize).Shrink(0).Radius(checkboxSize/2).
|
|
Background(bg).Border(theme.BorderWidth, border)
|
|
dot.Transition(textInputFade)
|
|
dot.DrawOver(func(p *ui.Painter, r ui.Rect) {
|
|
if on {
|
|
s := r.W * 0.375
|
|
p.Fill(ui.Rect{X: r.X + (r.W-s)/2, Y: r.Y + (r.H-s)/2, W: s, H: s}, k.OnAccent, s/2)
|
|
}
|
|
if row.FocusVisible() {
|
|
internal.FocusRing(p, r, checkboxSize/2, k.Focus)
|
|
}
|
|
})
|
|
ui.Text(c, it.Label)
|
|
})
|
|
return row.Changed()
|
|
}
|