Added Datepicker

Some other work too

wdgt_linear_layout.go

@@ -88,14 +88,15 @@ func (w *LinearLayout) Init(id string, s tcell.Style) {
 	w.keyMap.Add(tcell.KeyTab, func(ev *tcell.EventKey) bool {
 		active := w.findActive()
 		if active == nil && len(w.widgets) > 0 {
-			// No widget is active
+			// No widget is active, but we do have some
+
 			if w.widgets[0].Focusable() {
 				w.widgets[0].SetActive(true)
 				return true
 			}
 			return false
 		}
-		return w.activateNext()
+		return w.ActivateNext()
 	})
 }
 
@@ -122,13 +123,16 @@ func (w *LinearLayout) HandleKey(ev *tcell.EventKey) bool {
 	}
 	active := w.findActive()
 	if active != nil {
+		w.Log("LL(%s) Active(%s) Handlekey", w.Id(), active.Id())
 		if active.HandleKey(ev) {
 			return true
 		}
 	}
 	return w.keyMap.Handle(ev)
 }
-func (w *LinearLayout) GetActive() Widget { return w.findActive() }
+
+func (w *LinearLayout) GetActiveWidgetIdx() int { return w.findActiveIdx() }
+func (w *LinearLayout) GetActiveWidget() Widget { return w.findActive() }
 
 func (w *LinearLayout) HandleTime(ev *tcell.EventTime) {
 	for _, wi := range w.widgets {
@@ -242,6 +246,15 @@ func (w *LinearLayout) MinH() int {
 }
 
 // Find the currently active widget, there should be only one.
+func (w *LinearLayout) findActiveIdx() int {
+	for i := range w.widgets {
+		if w.widgets[i].Active() {
+			return i
+		}
+	}
+	return -1
+}
+
 func (w *LinearLayout) findActive() Widget {
 	for i := range w.widgets {
 		if w.widgets[i].Active() {
@@ -262,7 +275,7 @@ func (w *LinearLayout) findActiveOrFirst() Widget {
 	return nil
 }
 
-func (w *LinearLayout) activateNext() bool {
+func (w *LinearLayout) ActivateNext() bool {
 	var found bool
 	for i := range w.widgets {
 		if found && w.widgets[i].Focusable() {
@@ -276,6 +289,20 @@ func (w *LinearLayout) activateNext() bool {
 	return false
 }
 
+func (w *LinearLayout) ActivatePrev() bool {
+	var found bool
+	for i := len(w.widgets) - 1; i >= 0; i-- {
+		if found && w.widgets[i].Focusable() {
+			w.widgets[i].SetActive(true)
+			return true
+		} else if w.widgets[i].Active() {
+			found = true
+			w.widgets[i].SetActive(false)
+		}
+	}
+	return false
+}
+
 func (w *LinearLayout) SetOrientation(o LinearLayoutOrient) { w.orientation = o }
 func (w *LinearLayout) IndexOf(n Widget) int {
 	for i := range w.widgets {