public override VisualElement CreatePropertyGUI(SerializedProperty property)
{
var assetProperty = property.serializedObject
.FindProperty(((InputActionDropdownAttribute)attribute).inputActionAssetProperty);
InputActionAsset asset = assetProperty.objectReferenceValue as InputActionAsset;
var result = new VisualElement();
UpdateChoices(property, asset, result);
result.schedule.Execute(() =>
{
if (!SerializedPropertyDelegates.IsPropertyValid(property))
{
return;
}
var newAsset = assetProperty.objectReferenceValue as InputActionAsset;
if (asset != newAsset)
{
asset = newAsset;
UpdateChoices(property, asset, result);
}
}).Every(100);
return(result);
}
private void UpdateChoices(SerializedProperty property, InputActionAsset inputActionAsset, VisualElement result)
{
result.Clear();
if (inputActionAsset == null)
{
var propertyField = new ObjectField(property.displayName);
propertyField.SetEnabled(false);
result.Add(propertyField);
return;
}
var assetReferences = AssetDatabase
.LoadAllAssetsAtPath(AssetDatabase.GetAssetPath(inputActionAsset))
.OfType <InputActionReference>()
.ToList();
// Ugly hack: GenericMenu interprets "/" as a submenu path. But luckily, "/" is not the only slash we have in Unicode.
var choices = inputActionAsset.Select(a => a.actionMap.name + "\uFF0F" + a.name).ToList();
choices.Insert(0, "None");
var references = inputActionAsset.Select(a => assetReferences.Find(r => a == r.action)).ToList();
references.Insert(0, null);
var field = new PopupField <string>(property.displayName, choices, 0);
{
var selectedAction = ((InputActionReference)property.objectReferenceValue)?.action;
field.value = choices[Mathf.Max(0, references.FindIndex(a => (a == null ? null : a.action) == selectedAction))];
}
field.RegisterCallback <ChangeEvent <string> >(ev =>
{
property.objectReferenceValue = references[Mathf.Clamp(field.index, 0, references.Count - 1)];
property.serializedObject.ApplyModifiedProperties();
});
field.schedule.Execute(() =>
{
if (!SerializedPropertyDelegates.IsPropertyValid(property))
{
return;
}
var selectedAction = ((InputActionReference)property.objectReferenceValue)?.action;
field.value = choices[Mathf.Max(0, references.FindIndex(a => (a == null ? null : a.action) == selectedAction))];
}).Every(100);
result.Add(field);
}
