public void autofocus(FocusNode node)
{
D.assert(FocusManagerUtils._focusDebug($"Node autofocusing: {node}"));
if (focusedChild == null)
{
if (node._parent == null)
{
_reparent(node);
}
D.assert(node.ancestors.Contains(this), () => "Autofocus was requested for a node that is not a descendant of the scope from which it was requested.");
node._doRequestFocus(findFirstFocus: true);
}
}
public override void _doRequestFocus(bool findFirstFocus = false)
{
D.assert(findFirstFocus != null);
// It is possible that a previously focused child is no longer focusable.
while (focusedChild != null && !focusedChild.canRequestFocus)
{
_focusedChildren.removeLast();
}
if (!findFirstFocus)
{
if (canRequestFocus)
{
_setAsFocusedChildForScope();
_markNextFocus(this);
}
return;
}
FocusNode primaryFocus = focusedChild ?? this;
while (primaryFocus is FocusScopeNode && (( FocusScopeNode)primaryFocus).focusedChild != null)
{
FocusScopeNode scope = primaryFocus as FocusScopeNode;
primaryFocus = scope.focusedChild;
}
if (primaryFocus == this)
{
if (primaryFocus.canRequestFocus)
{
_setAsFocusedChildForScope();
_markNextFocus(this);
}
}
else
{
primaryFocus._doRequestFocus(findFirstFocus: findFirstFocus);
}
}
