73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
package input
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import (
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"fmt"
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"log/slog"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type CheckboxGroupOptions struct {
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Disabled bool
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}
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type CheckboxGroupResult struct {
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Element *ui.Element
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Changed bool
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}
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// count is how many boxes are checked.
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func count(checked []bool) int {
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n := 0
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for _, v := range checked {
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if v {
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n++
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}
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}
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return n
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}
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// CheckboxGroup puts a parent box over children; partial shows mixed.
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func CheckboxGroup(c *ui.Context, text string, items []string, checked []bool, o CheckboxGroupOptions) CheckboxGroupResult {
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if len(items) != len(checked) {
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panic(fmt.Sprintf("input: CheckboxGroup has %d items and %d states", len(items), len(checked)))
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}
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k := pixel.K(c)
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all := count(checked) == len(checked) && len(checked) > 0
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res := CheckboxGroupResult{}
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res.Element = ui.Column(c).Gap(k.D(2)).Role(ui.RoleGroup).Children(func() {
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shell, base, st := pixel.Shell(c, func() *ui.Element {
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return ui.CheckboxBase(c, &all).Label(text).Disabled(o.Disabled)
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})
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shell.Size(k.D(12+pixel.Measure(text)), k.D(pixel.LineHeight)).Draw(func(p *ui.Painter, r ui.Rect) {
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var mark *pixel.Sprite
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switch n := count(checked); {
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case n == len(checked) && n > 0:
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mark = check
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case n > 0:
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mark = dash
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}
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box(k.Canvas(p, r), text, mark, st)
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})
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if base.Changed() {
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for i := range checked {
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checked[i] = all
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}
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res.Changed = true
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}
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ui.Column(c).Gap(k.D(2)).Padding(0, 0, 0, k.D(12)).Children(func() {
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for i, it := range items {
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if Checkbox(c, it, &checked[i], CheckboxOptions{Disabled: o.Disabled}).Changed {
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res.Changed = true
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}
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}
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})
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})
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if res.Changed {
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slog.Debug("8bit: checkbox group", "label", text, "checked", checked)
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}
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return res
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}
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