Some work

wdgt_simple_list.go

@@ -22,6 +22,7 @@ THE SOFTWARE.
 package widgets
 
 import (
+	h "git.bullercodeworks.com/brian/tcell-widgets/helpers"
 	wh "git.bullercodeworks.com/brian/tcell-widgets/helpers"
 	"github.com/gdamore/tcell"
 )
@@ -235,9 +236,7 @@ func (w *SimpleList) WantH() int {
 
 func (w *SimpleList) MinW() int {
 	lng := wh.Longest(w.list)
-	if lng > 80 {
-		lng = 80
-	}
+	lng = h.Min(lng, 80)
 	return 2 + lng
 }
 
@@ -252,6 +251,9 @@ func (w *SimpleList) MoveUp() bool {
 		}
 		return true
 	} else if w.cursorWrap {
+		if w.cursor <= 0 {
+			return false
+		}
 		w.cursor = len(w.list) - 1
 		if w.onChange != nil {
 			w.onChange(w.cursor, w.list[w.cursor])
@@ -270,7 +272,7 @@ func (w *SimpleList) MoveDown() bool {
 		return true
 	} else if w.cursorWrap {
 		w.cursor = 0
-		if w.onChange != nil {
+		if len(w.list) > w.cursor && w.onChange != nil {
 			w.onChange(w.cursor, w.list[w.cursor])
 		}
 		return true