Hello world

internal/ui/panes/box.go

@@ -0,0 +1,71 @@
+// Package panes contains the lazygit-style bordered panes.
+package panes
+
+import (
+	"strings"
+
+	"charm.land/lipgloss/v2"
+	"github.com/charmbracelet/x/ansi"
+
+	"git.kebcloud.no/keb/lazysecrets/internal/ui/styles"
+)
+
+// Box draws a rounded border of exactly w×h cells with the title embedded in
+// the top edge and an optional footer in the bottom edge. The title is
+// rendered as given, so callers style it (see TitleStyle). Body lines are
+// truncated or padded to fit; extra lines are dropped.
+func Box(st styles.Styles, title, footer string, body []string, w, h int, focused bool) string {
+	return BoxCounted(st, title, footer, "", body, w, h, focused)
+}
+
+// BoxCounted is Box with a counter like "3 of 12" at the right end of the
+// bottom edge, where lazygit puts it.
+func BoxCounted(st styles.Styles, title, footer, counter string, body []string, w, h int, focused bool) string {
+	if w < 4 || h < 2 {
+		return ""
+	}
+	border := st.BorderBlurred
+	if focused {
+		border = st.BorderFocused
+	}
+	plain := func(s ...string) string { return strings.Join(s, "") }
+	inner := w - 2
+
+	edge := func(left, right, label string, styled func(...string) string) string {
+		if label == "" {
+			return border.Render(left + strings.Repeat("─", inner) + right)
+		}
+		label = ansi.Truncate(" "+label+" ", inner-1, "…")
+		fill := inner - 1 - ansi.StringWidth(label)
+		return border.Render(left+"─") + styled(label) + border.Render(strings.Repeat("─", fill)+right)
+	}
+
+	var b strings.Builder
+	b.WriteString(edge("╭", "╮", title, plain))
+	side := border.Render("│")
+	for i := range h - 2 {
+		line := ""
+		if i < len(body) {
+			line = ansi.Truncate(body[i], inner, "…")
+		}
+		b.WriteString("\n" + side + line + strings.Repeat(" ", inner-ansi.StringWidth(line)) + side)
+	}
+	bottom := edge("╰", "╯", footer, border.Render)
+	if counter != "" {
+		// Overwrite the end of the bottom edge: "… 3 of 12 ─╯".
+		label := " " + counter + " "
+		if keep := w - 2 - ansi.StringWidth(label); keep > 2 {
+			bottom = ansi.Truncate(bottom, keep, "") + border.Render(label+"─╯")
+		}
+	}
+	b.WriteString("\n" + bottom)
+	return b.String()
+}
+
+// TitleStyle returns the style for a pane title.
+func TitleStyle(st styles.Styles, focused bool) lipgloss.Style {
+	if focused {
+		return st.TitleFocused
+	}
+	return st.TitleBlurred
+}