85 lines
2.8 KiB
C#
85 lines
2.8 KiB
C#
|
|
using System.Diagnostics.CodeAnalysis;
|
|
|
|
namespace Voile.Resources
|
|
{
|
|
/// <summary>
|
|
/// Loads resources from various sources and prepares them to be used for Voile.
|
|
/// </summary>
|
|
/// <typeparam name="T"></typeparam>
|
|
public abstract class ResourceLoader<T> where T : Resource
|
|
{
|
|
/// <summary>
|
|
/// File extensions that are supported by this loader.
|
|
/// </summary>
|
|
public abstract IEnumerable<string> SupportedExtensions { get; }
|
|
|
|
/// <summary>
|
|
/// Loads a resource to <see cref="ResourceManager"/>'s resource list.
|
|
/// </summary>
|
|
/// <param name="path">File system path to the resource to load.</param>
|
|
/// <returns>A <see cref="Guid"/> of the loaded resource that can be later retrieved with <see cref="TryGet"/>.</returns>
|
|
public Guid Load(string path)
|
|
{
|
|
var resource = LoadResource(path);
|
|
var guid = Guid.NewGuid();
|
|
|
|
var loadedResources = ResourceManager.LoadedResources;
|
|
var oldResourceGuid = loadedResources.FirstOrDefault(loadedResource => loadedResource.Value.Path == path).Key;
|
|
|
|
if (loadedResources.ContainsKey(oldResourceGuid))
|
|
{
|
|
ResourceManager.ReplaceResource(oldResourceGuid, resource);
|
|
return oldResourceGuid;
|
|
}
|
|
|
|
ResourceManager.AddResource(guid, resource);
|
|
|
|
return guid;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reloads resources loaded by this resource loader.
|
|
/// </summary>
|
|
public void Reload()
|
|
{
|
|
foreach (var loadedResource in ResourceManager.LoadedResources)
|
|
{
|
|
if (loadedResource.Value is not T) continue;
|
|
Load(loadedResource.Value.Path);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Unloads a resource.
|
|
/// </summary>
|
|
/// <param name="resourceGuid">GUID of a resource to unload.</param>
|
|
/// <returns>True if unloading was successful, otherwise false.</returns>
|
|
public bool TryUnload(Guid resourceGuid)
|
|
{
|
|
if (!ResourceManager.LoadedResources.ContainsKey(resourceGuid))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
var resource = ResourceManager.LoadedResources[resourceGuid];
|
|
|
|
ResourceManager.RemoveResource(resourceGuid);
|
|
|
|
if (resource is IDisposable disposable)
|
|
{
|
|
disposable.Dispose();
|
|
}
|
|
|
|
|
|
return true;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Load steps specific to this resource loader.
|
|
/// </summary>
|
|
/// <param name="path">File system path to the resource to load.</param>
|
|
/// <returns>Loaded resource.</returns>
|
|
protected abstract T LoadResource(string path);
|
|
}
|
|
} |