80 lines
2.3 KiB
Go
80 lines
2.3 KiB
Go
package input
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import (
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"log/slog"
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"slices"
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"strings"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/display"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type TokenFieldOptions struct {
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Placeholder string
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// Width is in dots; zero means 200.
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Width int
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Disabled bool
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}
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type TokenFieldResult struct {
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Element *ui.Element
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Changed bool
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}
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type tokenKey struct{}
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// editorSlot keys the editor so added tags keep its focus.
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type editorSlot struct{}
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// TokenField shows tokens as tags; Enter or comma adds.
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func TokenField(c *ui.Context, text string, tokens *[]string, o TokenFieldOptions) TokenFieldResult {
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k := pixel.K(c)
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e := ui.Row(c).Wrap().Width(k.D(orDef("TokenField Width", o.Width, 200))).Padding(k.D(3), k.D(4)).Gap(k.D(3)).AlignItems(ui.Center)
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e.Role(ui.RoleGroup).Label(text).Description(strings.Join(*tokens, ", "))
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draft := ui.Local(e, tokenKey{}, func() string { return "" })
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res := TokenFieldResult{Element: e}
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add := func(s string) {
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if s = strings.TrimSpace(s); s != "" && !slices.Contains(*tokens, s) {
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*tokens, res.Changed = append(*tokens, s), true
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}
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}
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// A comma typed since the last frame cuts the draft.
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if parts := strings.Split(*draft, ","); len(parts) > 1 {
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for _, p := range parts[:len(parts)-1] {
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add(p)
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}
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*draft = parts[len(parts)-1]
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}
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if e.Shortcut(0, ui.KeyEnter) {
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add(*draft)
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*draft = ""
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}
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if *draft == "" && len(*tokens) > 0 && e.Shortcut(0, ui.KeyBackspace) {
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*tokens, res.Changed = (*tokens)[:len(*tokens)-1], true
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}
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var ed pixel.Edit
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e.Children(func() {
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for i := 0; i < len(*tokens); i++ {
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tok, removed := (*tokens)[i], false
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ui.Box(c).Key(tok).Children(func() {
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removed = display.Tag(c, tok, display.TagOptions{Removable: true, Disabled: o.Disabled}).Removed
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})
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if removed {
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*tokens, res.Changed = slices.Delete(*tokens, i, i+1), true
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i--
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}
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}
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ui.Box(c).Key(editorSlot{}).Grow(1).MinWidth(k.D(40)).Children(func() {
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ed = pixel.Editor(c, draft, pixel.EditorOptions{Label: text, Placeholder: o.Placeholder, Disabled: o.Disabled})
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})
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})
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focus := ed.Focused
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e.Draw(func(p *ui.Painter, r ui.Rect) { well(k.Canvas(p, r), pixel.Edge, focus) })
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if res.Changed {
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slog.Debug("8bit: tokens", "label", text, "tokens", *tokens)
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}
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return res
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}
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