Initial addition of support for worktrees

pkg/gui/presentation/worktrees.go

@@ -0,0 +1,35 @@
+package presentation
+
+import (
+	"github.com/jesseduffield/generics/slices"
+	"github.com/jesseduffield/lazygit/pkg/commands/models"
+	"github.com/jesseduffield/lazygit/pkg/gui/presentation/icons"
+	"github.com/jesseduffield/lazygit/pkg/gui/style"
+	"github.com/jesseduffield/lazygit/pkg/theme"
+)
+
+func GetWorktreeListDisplayStrings(worktrees []*models.Worktree) [][]string {
+	return slices.Map(worktrees, func(worktree *models.Worktree) []string {
+		return getWorktreeDisplayStrings(worktree)
+	})
+}
+
+// getWorktreeDisplayStrings returns the display string of branch
+func getWorktreeDisplayStrings(w *models.Worktree) []string {
+	textStyle := theme.DefaultTextColor
+
+	current := ""
+	currentColor := style.FgCyan
+	if w.Current {
+		current = "  *"
+		currentColor = style.FgGreen
+	}
+
+	res := make([]string, 0, 3)
+	res = append(res, currentColor.Sprint(current))
+	if icons.IsIconEnabled() {
+		res = append(res, textStyle.Sprint(icons.IconForWorktree(w)))
+	}
+	res = append(res, textStyle.Sprint(w.Name))
+	return res
+}