public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
{
SerializedProperty typeNameProp = property.FindPropertyRelative("typeName");
string dropDownMenuName = typeNameProp.stringValue;
bool selected = !string.IsNullOrEmpty(dropDownMenuName);
if (!selected)
{
return(EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing);
}
var parameterTypes = SerializableClassConstructor.GetArgumentTypes(property);
int count = 1;
Type classType = SerializableClassConstructor.GetConstructorType(property);
if (classType != null)
{
var constructor = classType.GetConstructor(parameterTypes);
if (constructor != null)
{
var parameters = constructor.GetParameters();
count += (parameterTypes == null ? 0 : parameterTypes.Length);
}
}
return(EditorGUIUtility.standardVerticalSpacing * (count + 1) + EditorGUIUtility.singleLineHeight * count);
}
private void SetConstructor(SerializedProperty property, ConstructorInfo constructorInfo)
{
SerializedProperty typeNameProp = property.FindPropertyRelative("typeName");
typeNameProp.stringValue = SerializableClassConstructor.GetClassSerializedName(constructorInfo.DeclaringType);
SerializedProperty argProp = property.FindPropertyRelative("serializedArguments");
ParameterInfo[] parameters = constructorInfo.GetParameters();
argProp.arraySize = parameters.Length;
for (int i = 0; i < parameters.Length; i++)
{
argProp.GetArrayElementAtIndex(i).FindPropertyRelative("argType").enumValueIndex = (int)SerializableArgument.FromRealType(parameters[i].ParameterType);
}
property.serializedObject.ApplyModifiedProperties();
property.serializedObject.Update();
}
protected void ShowConstructorSelector(SerializedProperty property)
{
// base type constraint
Type baseType = SerializableClassConstructor.GetTypeFromName(
property.FindPropertyRelative("baseTypeString").stringValue);
var subclassTypes = ReflectionUtilities.GetAllSubTypes(baseType);
List <MenuItem> menuItems = new List <MenuItem>();
for (int i = 0; i < subclassTypes.Count; i++)
{
Type t = subclassTypes[i];
ConstructorInfo[] constructors = t.GetConstructors();
foreach (var constructor in constructors)
{
Type[] parms = constructor.GetParameters().Select(x => x.ParameterType).ToArray();
// Skip methods with unsupported args
if (parms.Any(x => !SerializableArgument.IsSupported(x)))
{
continue;
}
string constructorPrettyName = GetConstructorShowString(constructor);
menuItems.Add(new MenuItem(t.Name, constructorPrettyName, () => SetConstructor(property, constructor)));
}
}
// Construct and display context menu
GenericMenu menu = new GenericMenu();
for (int i = 0; i < menuItems.Count; i++)
{
menu.AddItem(menuItems[i].label, false, menuItems[i].action);
}
if (menu.GetItemCount() == 0)
{
menu.AddDisabledItem(new GUIContent("No supported constructor."));
}
menu.ShowAsContext();
}
public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
// Using BeginProperty / EndProperty on the parent property means that
// prefab override logic works on the entire property.
EditorGUI.BeginProperty(position, label, property);
GUI.Box(position, "");
//show the dropdown list for selecting constructors
SerializedProperty typeNameProp = property.FindPropertyRelative("typeName");
string dropDownMenuName = typeNameProp.stringValue;
if (typeNameProp.stringValue.LastIndexOf(',') >= 0)
{
dropDownMenuName = dropDownMenuName.Substring(0, typeNameProp.stringValue.LastIndexOf(','));
}
dropDownMenuName = dropDownMenuName.Substring(dropDownMenuName.LastIndexOf('.') + 1);
bool selected = !string.IsNullOrEmpty(dropDownMenuName);
if (!selected)
{
dropDownMenuName = "Select a constructor";
}
position.height = EditorGUIUtility.singleLineHeight;
position.y += EditorGUIUtility.standardVerticalSpacing;
Rect pos = EditorGUI.PrefixLabel(position, label);
var tempPos = position;
tempPos.x += pos.x;
// Method select button
if (EditorGUI.DropdownButton(pos, new GUIContent(dropDownMenuName), FocusType.Keyboard))
{
ShowConstructorSelector(property);
}
if (selected)
{
//show the constructor argments
var parameterTypes = SerializableClassConstructor.GetArgumentTypes(property);
Type classType = SerializableClassConstructor.GetConstructorType(property);
var constructor = classType.GetConstructor(parameterTypes);
if (constructor != null)
{
var parameters = constructor.GetParameters();
SerializedProperty argProps = property.FindPropertyRelative("serializedArguments");
EditorGUI.indentLevel++;
for (int i = 0; i < parameterTypes.Length; i++)
{
position.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
SerializedProperty argProp = argProps.GetArrayElementAtIndex(i);
var drawPos = position;
//drawPos.height -= EditorGUIUtility.standardVerticalSpacing;
ShowSerializedArg(drawPos, argProp, parameters[i].Name);
}
EditorGUI.indentLevel--;
}
}
// Set indent back to what it was
EditorGUI.EndProperty();
}