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using System;
using System.Collections.Generic;
using StardewModdingAPI.Framework;
namespace StardewModdingAPI.Events
{
/// <summary>Events raised when the game loads content.</summary>
[Obsolete("This is an undocumented experimental API and may change without warning.")]
public static class ContentEvents
{
/*********
** Properties
*********/
/// <summary>Tracks the installed mods.</summary>
private static ModRegistry ModRegistry;
/// <summary>Encapsulates monitoring and logging.</summary>
private static IMonitor Monitor;
/// <summary>The mods using the experimental API for which a warning has been raised.</summary>
private static readonly HashSet<string> WarnedMods = new HashSet<string>();
/*********
** Events
*********/
/// <summary>Raised when an XNB file is being read into the cache. Mods can change the data here before it's cached.</summary>
public static event EventHandler<IContentEventHelper> AssetLoading;
/*********
** Internal methods
*********/
/// <summary>Injects types required for backwards compatibility.</summary>
/// <param name="modRegistry">Tracks the installed mods.</param>
/// <param name="monitor">Encapsulates monitoring and logging.</param>
internal static void Shim(ModRegistry modRegistry, IMonitor monitor)
{
ContentEvents.ModRegistry = modRegistry;
ContentEvents.Monitor = monitor;
}
/// <summary>Raise an <see cref="AssetLoading"/> event.</summary>
/// <param name="monitor">Encapsulates monitoring and logging.</param>
/// <param name="contentHelper">Encapsulates access and changes to content being read from a data file.</param>
internal static void InvokeAssetLoading(IMonitor monitor, IContentEventHelper contentHelper)
{
// raise warning about experimental API
foreach (Delegate handler in ContentEvents.AssetLoading.GetInvocationList())
{
string modName = ContentEvents.ModRegistry.GetModFrom(handler) ?? "An unknown mod";
if (!ContentEvents.WarnedMods.Contains(modName))
{
ContentEvents.WarnedMods.Add(modName);
ContentEvents.Monitor.Log($"{modName} used the undocumented and experimental content API, which may change or be removed without warning.", LogLevel.Warn);
}
}
// raise event
monitor.SafelyRaiseGenericEvent($"{nameof(ContentEvents)}.{nameof(ContentEvents.AssetLoading)}", ContentEvents.AssetLoading?.GetInvocationList(), null, contentHelper);
}
/// <summary>Get whether there are any <see cref="AssetLoading"/> listeners.</summary>
internal static bool HasAssetLoadingListeners()
{
return ContentEvents.AssetLoading != null;
}
}
}
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