tui: migrate Bubble Tea v1 → v2 (charm.land), enable Shift+Enter

Move the Go TUI from github.com/charmbracelet/{bubbletea,lipgloss} to the v2 ecosystem at charm.land/{bubbletea,lipgloss}/v2 (Go 1.25). v2's kitty keyboard disambiguation is on by default, so Shift+Enter now reliably inserts a newline in the composer (Ctrl+J / Alt+Enter kept as fallbacks for non-kitty terminals). Approach: rather than rewrite ~190 key-match sites to v2's (Code, Mod) idiom, a small shim (internal/app/key.go) converts a v2 KeyPressMsg into the v1-shaped keyMsg the handlers already expect, at the single Update boundary. The rest is mechanical: - key constants tea.Key* → shim consts; tea.KeyMsg → keyMsg. - lipgloss.Color is now a func returning color.Color, not a type → fields/params retyped to image/color.Color (theme/diff/overlays/view). - v2 View() returns tea.View: render() builds the string, View() wraps it and carries AltScreen (alt-screen is a per-frame View field now, not a program opt). - WithWhitespaceBackground/Foreground → WithWhitespaceStyle(Style). - preview: drop lipgloss.SetColorProfile (v2 renders truecolor by default). Build, vet, gofmt, and the full test suite are green; preview renders truecolor across kinds. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-22 15:59:55 +00:00
parent 6c792b83e2
commit d247b19608
27 changed files with 432 additions and 300 deletions
@@ -0,0 +1,123 @@
+package app
+
+import tea "charm.land/bubbletea/v2"
+
+// bubbletea v2 collapsed key events into a single (Code rune, Mod KeyMod) form
+// and dropped the v1 KeyType enum the handlers were written against. Rather than
+// rewrite ~190 key-match sites, this shim adapts a v2 key press into the same
+// v1-shaped struct (Type + Runes + modifier flags), so all the matching logic
+// downstream stays untouched. The only place that ever touches the raw v2 key
+// is toKeyMsg below, called once at the Update boundary.
+
+type keyType int
+
+const (
+	keyRunes keyType = iota
+	keyEnter
+	keyUp
+	keyDown
+	keyLeft
+	keyRight
+	keySpace
+	keyEsc
+	keyBackspace
+	keyTab
+	keyPgUp
+	keyPgDown
+	keyCtrlA
+	keyCtrlC
+	keyCtrlD
+	keyCtrlJ
+	keyCtrlR
+	keyCtrlU
+	keyCtrlX
+	keyCtrlUp
+	keyCtrlDown
+	keyOther
+)
+
+// keyMsg is the v1-shaped key event the handlers consume: a Type plus the typed
+// Runes and modifier flags. Shift is newly meaningful under v2's kitty key
+// disambiguation — it powers Shift+Enter newlines (see handleInsertKey).
+type keyMsg struct {
+	Type  keyType
+	Runes []rune
+	Alt   bool
+	Shift bool
+	str   string
+}
+
+func (k keyMsg) String() string { return k.str }
+
+// toKeyMsg converts a bubbletea v2 key press into the shim's v1-shaped form.
+func toKeyMsg(p tea.KeyPressMsg) keyMsg {
+	k := p.Key()
+	out := keyMsg{
+		Alt:   k.Mod.Contains(tea.ModAlt),
+		Shift: k.Mod.Contains(tea.ModShift),
+		str:   k.Keystroke(),
+	}
+	ctrl := k.Mod.Contains(tea.ModCtrl)
+	switch k.Code {
+	case tea.KeyEnter:
+		out.Type = keyEnter
+	case tea.KeyEscape:
+		out.Type = keyEsc
+	case tea.KeyTab:
+		out.Type = keyTab
+	case tea.KeyBackspace:
+		out.Type = keyBackspace
+	case tea.KeySpace:
+		out.Type = keySpace
+		out.Runes = []rune{' '}
+	case tea.KeyUp:
+		if ctrl {
+			out.Type = keyCtrlUp
+		} else {
+			out.Type = keyUp
+		}
+	case tea.KeyDown:
+		if ctrl {
+			out.Type = keyCtrlDown
+		} else {
+			out.Type = keyDown
+		}
+	case tea.KeyLeft:
+		out.Type = keyLeft
+	case tea.KeyRight:
+		out.Type = keyRight
+	case tea.KeyPgUp:
+		out.Type = keyPgUp
+	case tea.KeyPgDown:
+		out.Type = keyPgDown
+	default:
+		if ctrl {
+			switch k.Code {
+			case 'a':
+				out.Type = keyCtrlA
+			case 'c':
+				out.Type = keyCtrlC
+			case 'd':
+				out.Type = keyCtrlD
+			case 'j':
+				out.Type = keyCtrlJ
+			case 'r':
+				out.Type = keyCtrlR
+			case 'u':
+				out.Type = keyCtrlU
+			case 'x':
+				out.Type = keyCtrlX
+			default:
+				out.Type = keyOther
+			}
+			return out
+		}
+		if k.Text != "" {
+			out.Type = keyRunes
+			out.Runes = []rune(k.Text)
+		} else {
+			out.Type = keyOther
+		}
+	}
+	return out
+}