Editor extension for OnConfirmCancel

OnConfirmCancelEditor

using System;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEditor;

[CustomEditor (typeof(OnConfirmCancel), true)]
public class OnConfirmCancelEditor : Editor
{
	//
	// Fields
	//
	private GUIContent[] m_EventTypes;
	
	private GUIContent m_AddButonContent;
	
	private GUIContent m_EventIDName;
	
	private SerializedProperty m_DelegatesProperty;
	
	private GUIContent m_IconToolbarMinus;
	
	//
	// Methods
	//
	private void OnAddNewSelected (object index)
	{
		int enumValueIndex = (int)index;
		this.m_DelegatesProperty.arraySize++;
		SerializedProperty arrayElementAtIndex = this.m_DelegatesProperty.GetArrayElementAtIndex (this.m_DelegatesProperty.arraySize - 1);
		SerializedProperty serializedProperty = arrayElementAtIndex.FindPropertyRelative ("eventID");
		serializedProperty.enumValueIndex = enumValueIndex;
		base.serializedObject.ApplyModifiedProperties ();
	}
	
	protected virtual void OnEnable ()
	{
		this.m_DelegatesProperty = base.serializedObject.FindProperty ("delegates");
		this.m_AddButonContent = new GUIContent ("Add New");
		this.m_EventIDName = new GUIContent (string.Empty);
		this.m_IconToolbarMinus = new GUIContent ("-");
		this.m_IconToolbarMinus.image = null;
		this.m_IconToolbarMinus.tooltip = "Remove selection from list";
		string[] names = Enum.GetNames (typeof(ConfirmCancelTriggerType));
		this.m_EventTypes = new GUIContent[names.Length];
		for (int i = 0; i < names.Length; i++)
		{
			this.m_EventTypes [i] = new GUIContent (names [i]);
		}
	}
	
	public override void OnInspectorGUI ()
	{
		base.serializedObject.Update ();
		int num = -1;
		EditorGUILayout.Space ();
		Vector2 vector = EditorStyles.miniButton.CalcSize (this.m_IconToolbarMinus);
		for (int i = 0; i < this.m_DelegatesProperty.arraySize; i++)
		{
			SerializedProperty arrayElementAtIndex = this.m_DelegatesProperty.GetArrayElementAtIndex (i);
			SerializedProperty serializedProperty = arrayElementAtIndex.FindPropertyRelative ("eventID");
			SerializedProperty property = arrayElementAtIndex.FindPropertyRelative ("callback");
			this.m_EventIDName.text = serializedProperty.enumNames [serializedProperty.enumValueIndex];
			EditorGUILayout.PropertyField (property, this.m_EventIDName, new GUILayoutOption[0]);
			Rect lastRect = GUILayoutUtility.GetLastRect ();
			Rect position = new Rect (lastRect.xMax - vector.x - 2f, lastRect.y + 1f, vector.x, vector.y);
			if (GUI.Button (position, this.m_IconToolbarMinus, EditorStyles.miniButton))
			{
				num = i;
			}
			EditorGUILayout.Space ();
		}
		if (num > -1)
		{
			this.RemoveEntry (num);
		}
		Rect rect = GUILayoutUtility.GetRect (this.m_AddButonContent, GUI.skin.button);
		rect.x += (rect.width - 200f) / 2f;
		rect.width = 200f;
		if (GUI.Button (rect, this.m_AddButonContent))
		{
			this.ShowAddTriggermenu ();
		}
		base.serializedObject.ApplyModifiedProperties ();
	}
	
	private void RemoveEntry (int toBeRemovedEntry)
	{
		this.m_DelegatesProperty.DeleteArrayElementAtIndex (toBeRemovedEntry);
	}
	
	private void ShowAddTriggermenu ()
	{
		GenericMenu genericMenu = new GenericMenu ();
		for (int i = 0; i < this.m_EventTypes.Length; i++)
		{
			bool flag = true;
			for (int j = 0; j < this.m_DelegatesProperty.arraySize; j++)
			{
				SerializedProperty arrayElementAtIndex = this.m_DelegatesProperty.GetArrayElementAtIndex (j);
				SerializedProperty serializedProperty = arrayElementAtIndex.FindPropertyRelative ("eventID");
				if (serializedProperty.enumValueIndex == i)
				{
					flag = false;
				}
			}
			if (flag)
			{
				genericMenu.AddItem (this.m_EventTypes [i], false, new GenericMenu.MenuFunction2 (this.OnAddNewSelected), i);
			}
			else
			{
				genericMenu.AddDisabledItem (this.m_EventTypes [i]);
			}
		}
		genericMenu.ShowAsContext ();
		Event.current.Use ();
	}
}