Git: components 301-320

commit_input.go

@@ -0,0 +1,106 @@
+package mujica
+
+import (
+	"fmt"
+	"log/slog"
+	"strings"
+	"unicode/utf8"
+
+	"github.com/egoist/mygo/ui"
+
+	"mujicaui/icons"
+	"mujicaui/theme"
+)
+
+// CommitMessage is a commit's title and body.
+type CommitMessage struct {
+	Title string
+	Body  string
+}
+
+// CommitInputOptions configure a CommitInput.
+type CommitInputOptions struct {
+	// TitleLimit warns past this many title characters; zero means 50.
+	TitleLimit int
+	// Busy shows a commit in progress and blocks another.
+	Busy     bool
+	Disabled bool
+}
+
+// CommitInputResult is a built CommitInput and its events.
+type CommitInputResult struct {
+	Element          *ui.Element
+	committed, amend bool
+}
+
+// Committed reports Commit, or Cmd+Enter, this frame.
+func (r CommitInputResult) Committed() bool { return r.committed }
+
+// Amended reports Amend this frame.
+func (r CommitInputResult) Amended() bool { return r.amend }
+
+type commitInputState struct {
+	// pending blocks commits until Busy comes and goes.
+	pending, sawBusy bool
+}
+
+// CommitInput edits a commit message and commits or amends once.
+func CommitInput(c *ui.Context, m *CommitMessage, opts CommitInputOptions) CommitInputResult {
+	limit := opts.TitleLimit
+	if limit == 0 {
+		limit = 50
+	}
+	if limit < 0 {
+		panic("mujica: CommitInput TitleLimit is negative")
+	}
+	k := Tokens(c)
+	u := Density(c).Unit()
+	col := ui.Column(c).AlignItems(ui.Stretch).Gap(u * 2).Disabled(opts.Disabled)
+	res := CommitInputResult{Element: col}
+	st := ui.Local(col, "state", func() *commitInputState { return &commitInputState{} })
+	s := *st
+	if opts.Busy {
+		s.sawBusy = true
+	} else if s.sawBusy {
+		s.pending, s.sawBusy = false, false
+	}
+	blocked := opts.Busy || s.pending
+	n := utf8.RuneCountInString(m.Title)
+	col.Children(func() {
+		title := TextInput(c, &m.Title, TextInputOptions{Placeholder: msg(c, "commit_input.title"), Label: msg(c, "commit_input.title"),
+			Disabled: opts.Disabled, ReadOnly: blocked,
+			Trailing: func() {
+				col := k.TextMuted
+				if n > limit {
+					col = k.Warning
+				}
+				name := fmt.Sprintf(msg(c, "commit_input.count"), n, limit)
+				if n > limit {
+					name = fmt.Sprintf(msg(c, "commit_input.long"), n-limit)
+				}
+				ui.Text(c, fmt.Sprintf("%d/%d", n, limit)).FontSize(FontSize(c, theme.CaptionSize)).FontFeatures("tnum").TextColor(col).Shrink(0).
+					Label(name).Tooltip(name)
+			}})
+		body := TextArea(c, &m.Body, TextAreaOptions{Placeholder: msg(c, "commit_input.body"), Label: msg(c, "commit_input.body"),
+			MinHeight: 72, MaxHeight: 200, Disabled: opts.Disabled, ReadOnly: blocked})
+		empty := strings.TrimSpace(m.Title) == ""
+		send := (title.Submitted() || body.Submitted()) && !empty
+		ui.Row(c).Gap(u * 2).Justify(ui.End).Children(func() {
+			if Button(c, msg(c, "commit_input.amend"), ButtonOptions{Variant: Secondary, Icon: icons.Must("rotate-ccw"), Disabled: blocked || empty}).Clicked() {
+				res.amend = true
+			}
+			if Button(c, msg(c, "commit_input.commit"), ButtonOptions{Icon: icons.Must("check"), Loading: opts.Busy, Disabled: s.pending || empty}).Clicked() {
+				send = true
+			}
+		})
+		res.committed = send && !res.amend
+	})
+	if blocked || col.IsDisabled() {
+		res.committed, res.amend = false, false
+	}
+	if res.committed || res.amend {
+		s.pending = true
+		slog.Debug("mujica: commit input submit", "amend", res.amend)
+	}
+	return res
+}