protected override void OnGUI_Internal(Rect rect, SerializedProperty property, GUIContent label)
{
EditorGUI.BeginProperty(rect, label, property);
DropdownAttribute dropdownAttribute = (DropdownAttribute)attribute;
object target = PropertyUtility.GetTargetObjectWithProperty(property);
object valuesObject = GetValues(property, dropdownAttribute.ValuesName);
FieldInfo dropdownField = ReflectionUtility.GetField(target, property.name);
if (AreValuesValid(valuesObject, dropdownField))
{
if (valuesObject is IList && dropdownField.FieldType == GetElementType(valuesObject))
{
// Selected value
object selectedValue = dropdownField.GetValue(target);
// Values and display options
IList valuesList = (IList)valuesObject;
object[] values = new object[valuesList.Count];
string[] displayOptions = new string[valuesList.Count];
for (int i = 0; i < values.Length; i++)
{
object value = valuesList[i];
values[i] = value;
displayOptions[i] = value == null ? "<null>" : value.ToString();
}
// Selected value index
int selectedValueIndex = Array.IndexOf(values, selectedValue);
if (selectedValueIndex < 0)
{
selectedValueIndex = 0;
}
NaughtyEditorGUI.Dropdown(
rect, property.serializedObject, target, dropdownField, label.text, selectedValueIndex, values, displayOptions);
}
else if (valuesObject is IDropdownList)
{
// Current value
object selectedValue = dropdownField.GetValue(target);
// Current value index, values and display options
int index = -1;
int selectedValueIndex = -1;
List <object> values = new List <object>();
List <string> displayOptions = new List <string>();
IDropdownList dropdown = (IDropdownList)valuesObject;
using (IEnumerator <KeyValuePair <string, object> > dropdownEnumerator = dropdown.GetEnumerator())
{
while (dropdownEnumerator.MoveNext())
{
index++;
KeyValuePair <string, object> current = dropdownEnumerator.Current;
if (current.Value?.Equals(selectedValue) == true)
{
selectedValueIndex = index;
}
values.Add(current.Value);
if (current.Key == null)
{
displayOptions.Add("<null>");
}
else if (string.IsNullOrWhiteSpace(current.Key))
{
displayOptions.Add("<empty>");
}
else
{
displayOptions.Add(current.Key);
}
}
}
if (selectedValueIndex < 0)
{
selectedValueIndex = 0;
}
NaughtyEditorGUI.Dropdown(
rect, property.serializedObject, target, dropdownField, label.text, selectedValueIndex, values.ToArray(), displayOptions.ToArray());
}
}
else
{
string message = string.Format("Invalid values with name '{0}' provided to '{1}'. Either the values name is incorrect or the types of the target field and the values field/property/method don't match",
dropdownAttribute.ValuesName, dropdownAttribute.GetType().Name);
DrawDefaultPropertyAndHelpBox(rect, property, message, MessageType.Warning);
}
EditorGUI.EndProperty();
}
public override void ValidateProperty(SerializedProperty property)
{
ValidateInputAttribute validateInputAttribute = PropertyUtility.GetAttribute <ValidateInputAttribute>(property);
object target = PropertyUtility.GetTargetObjectWithProperty(property);
MethodInfo validationCallback = ReflectionUtility.GetMethod(target, validateInputAttribute.CallbackName);
if (validationCallback != null &&
validationCallback.ReturnType == typeof(bool))
{
ParameterInfo[] callbackParameters = validationCallback.GetParameters();
if (callbackParameters.Length == 0)
{
if (!(bool)validationCallback.Invoke(target, null))
{
if (string.IsNullOrEmpty(validateInputAttribute.Message))
{
NaughtyEditorGUI.HelpBox_Layout(
property.name + " is not valid", MessageType.Error, context: property.serializedObject.targetObject);
}
else
{
NaughtyEditorGUI.HelpBox_Layout(
validateInputAttribute.Message, MessageType.Error, context: property.serializedObject.targetObject);
}
}
}
else if (callbackParameters.Length == 1)
{
FieldInfo fieldInfo = ReflectionUtility.GetField(target, property.name);
Type fieldType = fieldInfo.FieldType;
Type parameterType = callbackParameters[0].ParameterType;
if (fieldType == parameterType)
{
if (!(bool)validationCallback.Invoke(target, new object[] { fieldInfo.GetValue(target) }))
{
if (string.IsNullOrEmpty(validateInputAttribute.Message))
{
NaughtyEditorGUI.HelpBox_Layout(
property.name + " is not valid", MessageType.Error, context: property.serializedObject.targetObject);
}
else
{
NaughtyEditorGUI.HelpBox_Layout(
validateInputAttribute.Message, MessageType.Error, context: property.serializedObject.targetObject);
}
}
}
else
{
string warning = "The field type is not the same as the callback's parameter type";
NaughtyEditorGUI.HelpBox_Layout(warning, MessageType.Warning, context: property.serializedObject.targetObject);
}
}
else
{
string warning =
validateInputAttribute.GetType().Name +
" needs a callback with boolean return type and an optional single parameter of the same type as the field";
NaughtyEditorGUI.HelpBox_Layout(warning, MessageType.Warning, context: property.serializedObject.targetObject);
}
}
}
