public override void OnGUI(Rect position, SerializedProperty property, GUIContent label) { DataBindInfoDrawer.InitErrorStyle(); EditorGUI.BeginProperty(position, label, property); EventBindInfo bindingInfo = property.GetSerializedValue <EventBindInfo>(); if (bindingInfo == null) { return; } string title = bindingInfo.component == null ? "NULL" : bindingInfo.component.ToString(); bool error = bindingInfo.component == null || string.IsNullOrEmpty(bindingInfo.invokeFunctionName); GUIStyle style = error ? DataBindInfoDrawer.errorStyle : EditorStyles.foldout; GUIContent titleContent = new GUIContent(title); property.isExpanded = EditorGUI.Foldout(new Rect(position.position, new Vector2(position.width, 20)), property.isExpanded, titleContent, true, style); if (property.isExpanded) { var amountRect = new Rect(position.x, position.y + 20, position.width, 20); var unitRect = new Rect(position.x, position.y + 40, position.width, 20); EditorGUI.PropertyField(amountRect, property.FindPropertyRelative("component"), GUIContent.none); if (bindingInfo.component != null) { SerializedObject o = property.serializedObject; Type tO = o.targetObject.GetType(); FieldInfo viewModelProperty = tO.GetField("ViewModel", BindingFlags.NonPublic | BindingFlags.Instance); Type vmType = viewModelProperty.FieldType; SerializedProperty propertyProperty = property.FindPropertyRelative("invokeFunctionName"); GetArgumentByComponentEvent(bindingInfo.component.GetType(), out Type argType); lstTemp.Clear(); ReflectionTool.GetVmMethodByParameter1Type(vmType, argType, lstTemp); ReflectionTool.GetVmPropertyByType(vmType, argType, lstTemp); if (lstTemp.Count > 0) { int index = lstTemp.IndexOf(propertyProperty.stringValue); index = Mathf.Max(0, index); index = EditorGUI.Popup(unitRect, index, lstTemp.ToArray()); propertyProperty.stringValue = lstTemp[index]; } else { propertyProperty.stringValue = ""; } o.ApplyModifiedProperties(); } } EditorGUI.EndProperty(); }