Modifying tasks works

app_state.go

@@ -11,6 +11,13 @@ import (
 	termbox "github.com/nsf/termbox-go"
 )
 
+const (
+	ScreenIdMain = iota
+	ScreenIdTask
+	ScreenIdAbout
+	ScreenIdExit
+)
+
 type AppState struct {
 	Name            string
 	Version         int
@@ -42,8 +49,6 @@ const (
 	TitleBg   = termbox.ColorBlue
 	CursorFg  = termbox.ColorBlack
 	CursorBg  = termbox.ColorGreen
-
-	ExitScreenId = -1
 )
 
 func NewApp() *AppState {
@@ -70,7 +75,7 @@ func (a *AppState) run(parms []string) int {
 		mainBundle := termboxScreen.Bundle{}
 		mainBundle.SetValue(MainBundleListKey, MainBundleListTodo)
 
-		if err := a.uiManager.InitializeScreen(MainScreenId, mainBundle); err != nil {
+		if err := a.uiManager.InitializeScreen(ScreenIdMain, mainBundle); err != nil {
 			return 1
 		}
 		if err := a.uiManager.Loop(); err != nil {