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package layout
import (
"fmt"
"strings"
"github.com/charmbracelet/lipgloss"
"github.com/kujtimiihoxha/termai/internal/tui/styles"
)
type BorderPosition int
const (
TopLeftBorder BorderPosition = iota
TopMiddleBorder
TopRightBorder
BottomLeftBorder
BottomMiddleBorder
BottomRightBorder
)
var (
ActiveBorder = styles.Blue
InactivePreviewBorder = styles.Grey
)
type BorderOptions struct {
Active bool
EmbeddedText map[BorderPosition]string
ActiveColor lipgloss.TerminalColor
InactiveColor lipgloss.TerminalColor
ActiveBorder lipgloss.Border
InactiveBorder lipgloss.Border
}
func Borderize(content string, opts BorderOptions) string {
if opts.EmbeddedText == nil {
opts.EmbeddedText = make(map[BorderPosition]string)
}
if opts.ActiveColor == nil {
opts.ActiveColor = ActiveBorder
}
if opts.InactiveColor == nil {
opts.InactiveColor = InactivePreviewBorder
}
if opts.ActiveBorder == (lipgloss.Border{}) {
opts.ActiveBorder = lipgloss.ThickBorder()
}
if opts.InactiveBorder == (lipgloss.Border{}) {
opts.InactiveBorder = lipgloss.NormalBorder()
}
var (
thickness = map[bool]lipgloss.Border{
true: opts.ActiveBorder,
false: opts.InactiveBorder,
}
color = map[bool]lipgloss.TerminalColor{
true: opts.ActiveColor,
false: opts.InactiveColor,
}
border = thickness[opts.Active]
style = lipgloss.NewStyle().Foreground(color[opts.Active])
width = lipgloss.Width(content)
)
encloseInSquareBrackets := func(text string) string {
if text != "" {
return fmt.Sprintf("%s%s%s",
style.Render(border.TopRight),
text,
style.Render(border.TopLeft),
)
}
return text
}
buildHorizontalBorder := func(leftText, middleText, rightText, leftCorner, inbetween, rightCorner string) string {
leftText = encloseInSquareBrackets(leftText)
middleText = encloseInSquareBrackets(middleText)
rightText = encloseInSquareBrackets(rightText)
// Calculate length of border between embedded texts
remaining := max(0, width-lipgloss.Width(leftText)-lipgloss.Width(middleText)-lipgloss.Width(rightText))
leftBorderLen := max(0, (width/2)-lipgloss.Width(leftText)-(lipgloss.Width(middleText)/2))
rightBorderLen := max(0, remaining-leftBorderLen)
// Then construct border string
s := leftText +
style.Render(strings.Repeat(inbetween, leftBorderLen)) +
middleText +
style.Render(strings.Repeat(inbetween, rightBorderLen)) +
rightText
// Make it fit in the space available between the two corners.
s = lipgloss.NewStyle().
Inline(true).
MaxWidth(width).
Render(s)
// Add the corners
return style.Render(leftCorner) + s + style.Render(rightCorner)
}
// Stack top border, content and horizontal borders, and bottom border.
return strings.Join([]string{
buildHorizontalBorder(
opts.EmbeddedText[TopLeftBorder],
opts.EmbeddedText[TopMiddleBorder],
opts.EmbeddedText[TopRightBorder],
border.TopLeft,
border.Top,
border.TopRight,
),
lipgloss.NewStyle().
BorderForeground(color[opts.Active]).
Border(border, false, true, false, true).Render(content),
buildHorizontalBorder(
opts.EmbeddedText[BottomLeftBorder],
opts.EmbeddedText[BottomMiddleBorder],
opts.EmbeddedText[BottomRightBorder],
border.BottomLeft,
border.Bottom,
border.BottomRight,
),
}, "\n")
}
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