refactor the way we render lists

pkg/gui/presentation/commit_files.go

@@ -0,0 +1,35 @@
+package presentation
+
+import (
+	"github.com/fatih/color"
+	"github.com/jesseduffield/lazygit/pkg/commands"
+	"github.com/jesseduffield/lazygit/pkg/theme"
+)
+
+func GetCommitFileListDisplayStrings(branches []*commands.CommitFile) [][]string {
+	lines := make([][]string, len(branches))
+
+	for i := range branches {
+		lines[i] = getCommitFileDisplayStrings(branches[i])
+	}
+
+	return lines
+}
+
+// getCommitFileDisplayStrings returns the display string of branch
+func getCommitFileDisplayStrings(f *commands.CommitFile) []string {
+	yellow := color.New(color.FgYellow)
+	green := color.New(color.FgGreen)
+	defaultColor := color.New(theme.DefaultTextColor)
+
+	var colour *color.Color
+	switch f.Status {
+	case commands.UNSELECTED:
+		colour = defaultColor
+	case commands.WHOLE:
+		colour = green
+	case commands.PART:
+		colour = yellow
+	}
+	return []string{colour.Sprint(f.DisplayString)}
+}