[view] fix change in FrameSwitcher

src/main/haxework/view/frame/FrameSwitcher.hx

@@ -57,11 +57,6 @@ class FrameSwitcher extends GroupView {
         if (current == null) {
             throw 'frame "$id" not found';
         }
-        addView(current);
-        toUpdate();
-        update();
-        focus(current);
-        current.onShow(data);
         if (animate != null) {
             animate.cancel();
         }
@@ -71,6 +66,11 @@ class FrameSwitcher extends GroupView {
         } else {
             removePrev(prev);
         }
+        addView(current);
+        toUpdate();
+        update();
+        focus(current);
+        current.onShow(data);
         history.push({id:current.frameId, data:data});
         onSwitch.emit(current);
         return cast current;