public static bool GoToState(/*VisualElement*/ BaseHandle visualElement, string name)
{
if (!visualElement.IsSet(VisualStateGroupsProperty))
{
return(false);
}
var groups = (IList <VisualStateGroup>)visualElement.GetValue(VisualStateGroupsProperty);
foreach (VisualStateGroup group in groups)
{
if (group.CurrentState?.Name == name)
{
// We're already in the target state; nothing else to do
return(true);
}
// See if this group contains the new state
var target = group.GetState(name);
if (target == null)
{
continue;
}
// If we've got a new state to transition to, unapply the setters from the current state
if (group.CurrentState != null)
{
foreach (Setter setter in group.CurrentState.Setters)
{
setter.UnApply(visualElement);
}
}
// Update the current state
group.CurrentState = target;
// Apply the setters from the new state
foreach (Setter setter in target.Setters)
{
setter.Apply(visualElement);
}
return(true);
}
return(false);
}
public static bool HasVisualStateGroups(this /*VisualElement*/ BaseHandle element)
{
return(element.IsSet(VisualStateGroupsProperty));
}
