init layout, notifications, tabs & more

Signed-off-by: Hadi <112569860+anotherhadi@users.noreply.github.com>

style/border.go

@@ -0,0 +1,72 @@
+package style
+
+import (
+	"strings"
+
+	"charm.land/lipgloss/v2"
+)
+
+// borderTypes maps the `border:` config value to a lipgloss.Border. Only the
+// symmetric, general-purpose border kinds are exposed here; MarkdownBorder,
+// BlockBorder and the half-block variants are content-specific rather than a
+// theming choice.
+var borderTypes = map[string]lipgloss.Border{
+	"rounded": lipgloss.RoundedBorder(),
+	"normal":  lipgloss.NormalBorder(),
+	"thick":   lipgloss.ThickBorder(),
+	"double":  lipgloss.DoubleBorder(),
+	"hidden":  lipgloss.HiddenBorder(),
+	"ascii":   lipgloss.ASCIIBorder(),
+}
+
+// resolveBorderType maps a `border:` config value to a lipgloss.Border,
+// falling back to RoundedBorder for an empty or unrecognized name.
+func resolveBorderType(name string) lipgloss.Border {
+	if b, ok := borderTypes[strings.ToLower(strings.TrimSpace(name))]; ok {
+		return b
+	}
+	return lipgloss.RoundedBorder()
+}
+
+// ContentHeight returns the usable inner height for a bordered panel of totalH rows.
+func ContentHeight(totalH int) int {
+	h := totalH - 2
+	if h < 0 {
+		return 0
+	}
+	return h
+}
+
+// RenderWithTitle renders a bordered box with a title embedded in the top border.
+// title may contain ANSI color codes. width and height are the total outer dimensions.
+//
+// Example:
+//
+//	box := style.RenderWithTitle(style.S.PanelFocused, "Header", content, w, h)
+func RenderWithTitle(border lipgloss.Style, title, content string, width, height int) string {
+	boxH := height - 1
+	if contentH := boxH - 1; contentH > 0 {
+		lines := strings.Split(content, "\n")
+		if len(lines) > contentH {
+			content = strings.Join(lines[:contentH], "\n")
+		}
+	}
+	box := border.BorderTop(false).Width(width).Height(boxH).Render(content)
+
+	boxWidth := lipgloss.Width(strings.SplitN(box, "\n", 2)[0])
+	titleW := lipgloss.Width(title)
+
+	// Pull the corner/fill glyphs from the style's own border spec instead of
+	// hardcoding rounded-border characters, so this respects style.S.BorderType.
+	b, _, _, _, _ := border.GetBorder()
+	topLeft, top, topRight := b.TopLeft, b.Top, b.TopRight
+
+	fillW := boxWidth - titleW - lipgloss.Width(topLeft) - lipgloss.Width(topRight) - 2 // 2 = the spaces around the title
+	if fillW < 0 {
+		fillW = 0
+	}
+	bc := lipgloss.NewStyle().Foreground(border.GetBorderTopForeground())
+	topLine := bc.Render(topLeft+" ") + bc.Render(title) + bc.Render(" "+strings.Repeat(top, fillW)+topRight)
+
+	return lipgloss.JoinVertical(lipgloss.Left, topLine, box)
+}