112 lines
2.6 KiB
C#
112 lines
2.6 KiB
C#
using System;
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using UnityEngine;
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namespace UnityEditor.U2D.Sprites
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{
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[Serializable]
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abstract class UndoObject : ScriptableObject
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{
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static bool s_Undoing = false;
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IUndoSystem m_UndoSystem;
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public static void BeginUndo()
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{
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s_Undoing = true;
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}
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public static void EndUndo()
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{
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s_Undoing = false;
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}
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public static bool undoing => s_Undoing;
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public static T Create<T, T1>(T1 data, IUndoSystem undoSystem) where T : UndoObject<T1> where T1:struct, IEquatable<T1>
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{
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var undoObject = CreateInstance<T>();
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undoObject.hideFlags = HideFlags.HideAndDontSave;
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undoObject.Init(data);
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undoObject.m_UndoSystem = undoSystem;
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return undoObject;
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}
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public static void Dispose(UndoObject undoObject)
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{
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if (undoObject != null)
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{
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undoObject?.Dispose();
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if(!EditorUtility.IsPersistent(undoObject))
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DestroyImmediate(undoObject);
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}
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}
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protected IUndoSystem undoSystem => m_UndoSystem;
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public abstract void Dispose();
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}
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[Serializable]
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class UndoObject<T> : UndoObject, ISerializationCallbackReceiver where T: IEquatable<T>
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{
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[SerializeField]
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int m_Version = 0;
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int m_CurrentVersion = 0;
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[SerializeField]
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T m_Data;
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public void Init(T data)
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{
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m_Data = data;
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}
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public void SetData(T data, string actionName)
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{
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if (!data.Equals(m_Data))
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{
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if (!undoing)
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{
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undoSystem.RegisterCompleteObjectUndo(this, actionName);
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m_Data = data;
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m_CurrentVersion++;
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m_Version = m_CurrentVersion;
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}
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else
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{
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SetData(data);
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}
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}
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}
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public T data => m_Data;
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public void SetData(T data)
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{
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m_Data = data;
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}
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public bool VersionChanged(bool resetVersion)
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{
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bool returnValue = m_CurrentVersion != m_Version;
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if (resetVersion)
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m_CurrentVersion = m_Version;
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return returnValue;
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}
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public override void Dispose()
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{
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undoSystem.ClearUndo(this);
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}
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public void OnBeforeSerialize()
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{
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}
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public void OnAfterDeserialize()
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{
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}
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}
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}
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