PowerToys/Wox.Infrastructure/Storage/BaseStorage.cs

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using System;
using System.IO;
namespace Wox.Infrastructure.Storage
{
[Serializable]
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public abstract class BaseStorage<T> : IStorage where T : class,IStorage, new()
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{
protected abstract string ConfigFolder { get; }
protected string ConfigPath
{
get
{
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return Path.Combine(ConfigFolder, ConfigName + FileSuffix);
}
}
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protected abstract string FileSuffix { get; }
protected abstract string ConfigName { get; }
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private static object locker = new object();
protected static T serializedObject;
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public event Action<T> AfterLoad;
protected virtual void OnAfterLoad(T obj)
{
Action<T> handler = AfterLoad;
if (handler != null) handler(obj);
}
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public static T Instance
{
get
{
if (serializedObject == null)
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{
lock (locker)
{
if (serializedObject == null)
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{
serializedObject = new T();
serializedObject.Load();
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}
}
}
return serializedObject;
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}
}
/// <summary>
/// if loading storage failed, we will try to load default
/// </summary>
/// <returns></returns>
protected virtual T LoadDefault()
{
return new T();
}
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protected abstract void LoadInternal();
protected abstract void SaveInternal();
public void Load()
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{
if (!File.Exists(ConfigPath))
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{
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if (!Directory.Exists(ConfigFolder))
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{
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Directory.CreateDirectory(ConfigFolder);
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}
File.Create(ConfigPath).Close();
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}
LoadInternal();
OnAfterLoad(serializedObject);
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}
public void Save()
{
lock (locker)
{
SaveInternal();
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}
}
}
}