Update Debug component

components/debug.go

@@ -2,6 +2,8 @@ package components
 
 import "github.com/erroneousboat/termui"
 
+// Debug can be used to relay debugging information in the Debug component,
+// see event.go on how to use it
 type Debug struct {
 	Par  *termui.Par
 	List *termui.List
@@ -46,5 +48,11 @@ func (d *Debug) SetY(y int) {
 // Println will add the text to the Debug component
 func (d *Debug) Println(text string) {
 	d.List.Items = append(d.List.Items, text)
+
+	// When at the end remove first item
+	if len(d.List.Items) > d.List.InnerBounds().Max.Y-1 {
+		d.List.Items = d.List.Items[1:]
+	}
+
 	termui.Render(d)
 }

handlers/event.go

@@ -56,6 +56,11 @@ func eventHandler(ctx *context.AppContext) {
 			ev := <-ctx.EventQueue
 			handleTermboxEvents(ctx, ev)
 			handleMoreTermboxEvents(ctx, ev)
+
+			// Place your debugging statements here
+			if ctx.Debug {
+				ctx.View.Debug.Println("hello world")
+			}
 		}
 	}()
 }