52 lines
1.4 KiB
C#
52 lines
1.4 KiB
C#
using System;
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namespace FlowScope.Resources
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{
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public sealed class ResourceHandle<T> : IResourceHandle<T> where T : class
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{
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private readonly ResourceEntry _entry;
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private readonly Action<string, object> _release;
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private T _asset;
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internal ResourceHandle(ResourceEntry entry)
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{
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_entry = entry ?? throw new ArgumentNullException(nameof(entry));
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Key = entry.Key;
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_asset = (T)entry.Asset;
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}
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public ResourceHandle(string key, T asset, Action<string, object> release)
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{
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Key = string.IsNullOrWhiteSpace(key)
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? throw new ArgumentException("Resource key is required.", nameof(key))
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: key;
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_asset = asset ?? throw new ArgumentNullException(nameof(asset));
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_release = release ?? throw new ArgumentNullException(nameof(release));
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}
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public string Key { get; }
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public T Asset => IsDisposed ? null : _asset;
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public bool IsDisposed { get; private set; }
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public void Dispose()
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{
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if (IsDisposed)
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{
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return;
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}
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IsDisposed = true;
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var asset = _asset;
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_asset = null;
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if (_entry != null)
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{
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_entry.ReleaseHandle();
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return;
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}
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_release(Key, asset);
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}
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}
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}
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