88 lines
2.4 KiB
C#
88 lines
2.4 KiB
C#
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using System.Linq;
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namespace ES3Internal
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{
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[System.Serializable]
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public abstract class ES3SerializableDictionary<TKey,TVal> : Dictionary<TKey,TVal>, ISerializationCallbackReceiver
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{
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[SerializeField]
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private List<TKey> _Keys;
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[SerializeField]
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private List<TVal> _Values;
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protected abstract bool KeysAreEqual(TKey a, TKey b);
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protected abstract bool ValuesAreEqual(TVal a, TVal b);
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public void OnBeforeSerialize()
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{
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_Keys = new List<TKey>();
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_Values = new List<TVal>();
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foreach(KeyValuePair<TKey, TVal> pair in this)
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{
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try
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{
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_Keys.Add(pair.Key);
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_Values.Add(pair.Value);
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}
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catch { }
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}
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}
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// load dictionary from lists
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public void OnAfterDeserialize()
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{
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// There are some situations where Unity will not get the serialized data correctly, returning null.
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// In this case we don't want to change anything, otherwise we'll lose the data entirely.
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if (_Keys == null || _Values == null)
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return;
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if(_Keys.Count != _Values.Count)
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throw new System.Exception(string.Format("Key count is different to value count after deserialising dictionary."));
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this.Clear();
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for (int i = 0; i < _Keys.Count; i++)
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{
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if (_Keys[i] != null)
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{
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try
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{
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this.Add(_Keys[i], _Values[i]);
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}
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catch { }
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}
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}
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_Keys = null;
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_Values = null;
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}
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public int RemoveNullValues()
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{
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var nullKeys = this.Where(pair => pair.Value == null)
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.Select(pair => pair.Key)
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.ToList();
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foreach (var nullKey in nullKeys)
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Remove(nullKey);
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return nullKeys.Count;
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}
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// Changes the key of a value without changing it's position in the underlying Lists.
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// Mainly used in the Editor where position might otherwise change while the user is editing it.
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// Returns true if a change was made.
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public bool ChangeKey(TKey oldKey, TKey newKey)
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{
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if(KeysAreEqual(oldKey, newKey))
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return false;
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var val = this [oldKey];
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Remove(oldKey);
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this [newKey] = val;
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return true;
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}
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}
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}
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