68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
package git
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import (
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"github.com/egoist/mygo/ui"
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"github.com/ZacharyZhang-NY/MujicaUI/core"
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"github.com/ZacharyZhang-NY/MujicaUI/internal"
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"github.com/ZacharyZhang-NY/MujicaUI/theme"
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)
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// InlineDiffOptions configure an InlineDiff.
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type InlineDiffOptions struct {
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// Mono sets the lines in the code font.
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Mono bool
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}
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type inlineDiffCache struct {
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from, to string
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a, b []internal.WordSpan
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done bool
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}
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// InlineDiff shows old and new lines with changed words marked.
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func InlineDiff(c *ui.Context, from, to string, opts InlineDiffOptions) *ui.Element {
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k := core.Tokens(c)
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col := ui.Column(c).AlignItems(ui.Stretch).Shrink(0).Radius(theme.ControlRadius).Clip()
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cache := ui.Local(col, "words", func() *inlineDiffCache { return &inlineDiffCache{} })
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w := *cache
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if !w.done || w.from != from || w.to != to {
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w.a, w.b = internal.WordDiff(from, to)
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w.from, w.to, w.done = from, to, true
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}
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if opts.Mono {
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col.Font(theme.MonoFont)
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}
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col.Children(func() {
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inlineDiffLine(c, "−", core.Msg(c, "inline_diff.removed"), w.a, k.Danger, k)
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inlineDiffLine(c, "+", core.Msg(c, "inline_diff.added"), w.b, k.Success, k)
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})
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return col
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}
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// inlineDiffLine shows one side with its changed words marked.
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func inlineDiffLine(c *ui.Context, sign, name string, spans []internal.WordSpan, col ui.Color, k theme.Tokens) {
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u := core.Density(c).Unit()
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out := make([]ui.Span, 0, len(spans))
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plain := ""
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for _, s := range spans {
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plain += s.Text
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sp := ui.Span{Text: s.Text}
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switch s.Op {
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case internal.DiffDelete:
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sp.Background, sp.Strikethrough, sp.DecorationColor = col.Mix(k.Surface, 0.7), true, col
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case internal.DiffInsert:
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sp.Background, sp.Underline, sp.DecorationColor = col.Mix(k.Surface, 0.7), true, col
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}
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out = append(out, sp)
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}
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if len(out) == 0 {
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out = append(out, ui.Span{Text: " "})
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}
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ui.Row(c).AlignItems(ui.Start).Gap(u*2).Padding(u, u*3).Background(col.Mix(k.Surface, 0.9)).Label(name + ": " + plain).
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Children(func() {
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ui.Text(c, sign).Font(theme.MonoFont).FontWeight(700).TextColor(col).Shrink(0)
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ui.RichText(c, out...).TextColor(k.Text).MinWidth(0)
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})
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}
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