private float DrawObjectDropDown(object obj, Rect valuePosition, SerializedProperty sourceTypeProperty, SerializedProperty sourceObjectMemberNameProp, SerializedProperty sourceObjectMemberIndexProp)
{
List <GUIContent> memberLabels = new List <GUIContent>();
List <MemeberData> memeberInfo = new List <MemeberData>();
int index = 0;
//If the object itself is an IValueSource<T> then it can be selected
if (SystemUtils.IsTypeOf(typeof(IValueSource <T>), obj.GetType()))
{
memberLabels.Add(new GUIContent(".this"));
memeberInfo.Add(new MemeberData(DynamicValue <T> .eSourceType.SourceObject, null, -1));
if (sourceObjectMemberIndexProp.intValue == -1 && string.IsNullOrEmpty(sourceObjectMemberNameProp.stringValue))
{
index = 0;
}
}
//If the object is a dynamic value source container then add its value sources to the list
if (SystemUtils.IsTypeOf(typeof(IValueSourceContainer), obj.GetType()))
{
IValueSourceContainer valueSourceContainer = (IValueSourceContainer)obj;
for (int i = 0; i < valueSourceContainer.GetNumberOfValueSource(); i++)
{
if (SystemUtils.IsTypeOf(typeof(IValueSource <T>), valueSourceContainer.GetValueSource(i).GetType()))
{
//Ideally be able to get value source name as well? just for editor?
memberLabels.Add(new GUIContent(valueSourceContainer.GetValueSourceName(i).ToString()));
memeberInfo.Add(new MemeberData(DynamicValue <T> .eSourceType.SourceDynamicMember, null, i));
if (sourceObjectMemberIndexProp.intValue == i)
{
index = memeberInfo.Count - 1;
}
}
}
}
//Finally add all public fields that are of type IValueSource<T>
FieldInfo[] fields = DynamicValue <T> .GetDynamicValueFields(obj);
foreach (FieldInfo field in fields)
{
memberLabels.Add(new GUIContent("." + field.Name));
memeberInfo.Add(new MemeberData(DynamicValue <T> .eSourceType.SourceMember, field, -1));
if (sourceObjectMemberNameProp.stringValue == field.Name)
{
index = memeberInfo.Count - 1;
}
}
//Warn if there are no valid options for the object
if (memeberInfo.Count == 0)
{
EditorGUI.LabelField(valuePosition, new GUIContent("Component Property"), new GUIContent("No public IValueSource<" + SystemUtils.GetTypeName(typeof(T)) + ">" + " members!"));
}
else
{
bool valueChanged = index != sourceTypeProperty.intValue;
EditorGUI.BeginChangeCheck();
index = EditorGUI.Popup(valuePosition, new GUIContent("Component Property"), index, memberLabels.ToArray());
valueChanged |= EditorGUI.EndChangeCheck();
if (valueChanged)
{
sourceTypeProperty.intValue = Convert.ToInt32(memeberInfo[index]._sourceType);
sourceObjectMemberNameProp.stringValue = memeberInfo[index]._fieldInfo != null ? memeberInfo[index]._fieldInfo.Name : null;
sourceObjectMemberIndexProp.intValue = memeberInfo[index]._index;
}
}
return(EditorGUIUtility.singleLineHeight);
}