112 lines
2.9 KiB
C#
112 lines
2.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Xml.Serialization;
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namespace Torch
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{
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/// <summary>
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/// Simple class that manages saving <see cref="Persistent{T}.Data"/> to disk using XML serialization.
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/// Can automatically save on changes by implementing <see cref="INotifyPropertyChanged"/> in the data class.
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/// </summary>
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/// <typeparam name="T">Data class type</typeparam>
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public sealed class Persistent<T> : IDisposable where T : new()
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{
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public string Path { get; set; }
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private T _data;
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public T Data
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{
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get => _data;
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private set
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{
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if (_data is INotifyPropertyChanged npc1)
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npc1.PropertyChanged -= OnPropertyChanged;
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_data = value;
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if (_data is INotifyPropertyChanged npc2)
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npc2.PropertyChanged += OnPropertyChanged;
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}
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}
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~Persistent()
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{
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Dispose();
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}
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public Persistent(string path, T data = default(T))
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{
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Path = path;
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Data = data;
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}
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private Timer _saveConfigTimer;
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private void SaveAsync()
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{
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if (_saveConfigTimer == null)
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{
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_saveConfigTimer = new Timer((x) => Save());
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}
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_saveConfigTimer.Change(1000, -1);
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}
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private void OnPropertyChanged(object sender, PropertyChangedEventArgs e)
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{
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SaveAsync();
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}
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public void Save(string path = null)
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{
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if (path == null)
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path = Path;
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var ser = new XmlSerializer(typeof(T));
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using (var f = File.CreateText(path))
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{
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ser.Serialize(f, Data);
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}
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}
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public static Persistent<T> Load(string path, bool saveIfNew = true)
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{
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Persistent<T> config = null;
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if (File.Exists(path))
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{
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var ser = new XmlSerializer(typeof(T));
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using (var f = File.OpenText(path))
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{
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config = new Persistent<T>(path, (T)ser.Deserialize(f));
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}
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}
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if (config == null)
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config = new Persistent<T>(path, new T());
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if (!File.Exists(path) && saveIfNew)
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config.Save();
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return config;
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}
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public void Dispose()
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{
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try
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{
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if (Data is INotifyPropertyChanged npc)
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npc.PropertyChanged -= OnPropertyChanged;
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_saveConfigTimer?.Dispose();
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Save();
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}
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catch
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{
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// ignored
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}
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}
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}
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}
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