public override Widget buildPage(BuildContext context, Animation <float> animation,
Animation <float> secondaryAnimation)
{
int?selectedItemIndex = null;
if (initialValue != null)
{
for (int index = 0; selectedItemIndex == null && index < items.Count; index += 1)
{
if (items[index].represents(initialValue))
{
selectedItemIndex = index;
}
}
}
Widget menu = new _PopupMenu <T>(route: this);
if (captureInheritedThemes ?? false)
{
menu = InheritedTheme.captureAll(showMenuContext, menu);
}
else
{
if (theme != null)
{
menu = new Theme(data: theme, child: menu);
}
}
return(MediaQuery.removePadding(
context: context,
removeTop: true,
removeBottom: true,
removeLeft: true,
removeRight: true,
child: new Builder(
builder: _ => new CustomSingleChildLayout(
layoutDelegate: new _PopupMenuRouteLayout(
position,
itemSizes,
selectedItemIndex ?? 0,
Directionality.of(context)
),
child: menu
))
));
}
public override Widget buildPage(BuildContext context, Animation <float> animation,
Animation <float> secondaryAnimation)
{
float?selectedItemOffset = null;
if (this.initialValue != null)
{
float y = PopupMenuUtils._kMenuVerticalPadding;
foreach (PopupMenuEntry <T> entry in this.items)
{
if (entry.represents((T)this.initialValue))
{
selectedItemOffset = y + entry.height / 2.0f;
break;
}
y += entry.height;
}
}
Widget menu = new _PopupMenu <T>(route: this);
if (this.theme != null)
{
menu = new Theme(data: this.theme, child: menu);
}
return(MediaQuery.removePadding(
context: context,
removeTop: true,
removeBottom: true,
removeLeft: true,
removeRight: true,
child: new Builder(
builder: _ => new CustomSingleChildLayout(
layoutDelegate: new _PopupMenuRouteLayout(
this.position,
selectedItemOffset
),
child: menu
))
));
}