spine-runtimes/spine-unity/Modules/com.esotericsoftware.spine.addressables/Editor/AddressablesTextureLoaderInspector.cs

/******************************************************************************
 * Spine Runtimes License Agreement
 * Last updated July 28, 2023. Replaces all prior versions.
 *
 * Copyright (c) 2013-2023, Esoteric Software LLC
 *
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#define SPINE_OPTIONAL_ON_DEMAND_LOADING

#if SPINE_OPTIONAL_ON_DEMAND_LOADING

using System;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;
using UnityEngine.AddressableAssets;
using UnityEngine.ResourceManagement.AsyncOperations;

namespace Spine.Unity.Editor {

	using GenericTextureLoader = GenericOnDemandTextureLoader<AddressableTextureReference, AddressableRequest>;
	using GenericTextureLoaderInspector = GenericOnDemandTextureLoaderInspector<AddressableTextureReference, AddressableRequest>;
	using PlaceholderMaterialMapping = AddressablesTextureLoader.PlaceholderMaterialMapping;
	using PlaceholderTextureMapping = AddressablesTextureLoader.PlaceholderTextureMapping;

	[InitializeOnLoad]
	[CustomEditor(typeof(AddressablesTextureLoader)), CanEditMultipleObjects]
	public class AddressablesTextureLoaderInspector : GenericTextureLoaderInspector {

		// Note: This static ctor ensures the generic base class method RegisterPlayModeChangedCallbacks is
		// definitely called via InitializeOnLoad. Otherwise problems arose where the base class static ctor code
		// is not executed (related to being a generic class).
		static AddressablesTextureLoaderInspector () {
			// The call below is necessary, otherwise the static GenericTextureLoaderInspector ctor is not called.
			GenericTextureLoaderInspector.RegisterPlayModeChangedCallbacks();
		}

		public class AddressablesMethodImplementations : StaticMethodImplementations {
			public override string LoaderSuffix { get { return "_Addressable"; } }

			public override GenericTextureLoader GetOrCreateLoader (string loaderPath) {
				AddressablesTextureLoader loader = AssetDatabase.LoadAssetAtPath<AddressablesTextureLoader>(loaderPath);
				if (loader == null) {
					loader = AddressablesTextureLoader.CreateInstance<AddressablesTextureLoader>();
					AssetDatabase.CreateAsset(loader, loaderPath);
					loader = AssetDatabase.LoadAssetAtPath<AddressablesTextureLoader>(loaderPath);
				} else {
					loader.Clear(clearAtlasAsset: false);
				}
				return loader;
			}

			public override bool SetupOnDemandLoadingReference (
				ref AddressableTextureReference targetTextureReference, Texture targetTexture) {

				string targetTextureGUID = AssetDatabase.AssetPathToGUID(AssetDatabase.GetAssetPath(targetTexture));
				if (string.IsNullOrEmpty(targetTextureGUID))
					return false;
				targetTextureReference.assetReference = new AssetReferenceTexture(targetTextureGUID);
				return targetTextureReference.assetReference.IsValid();
			}
		}

		#region Context Menu Item
		[MenuItem("CONTEXT/AtlasAssetBase/Add Addressables Loader")]
		static void AddAddressablesLoader (MenuCommand cmd) {
			if (staticMethods == null)
				staticMethods = new AddressablesMethodImplementations();
			staticMethods.AddOnDemandLoader(cmd);
		}
		#endregion

		protected override StaticMethodImplementations CreateStaticMethodImplementations () {
			return new AddressablesMethodImplementations();
		}

		protected override void DrawSingleLineTargetTextureProperty (SerializedProperty property) {
			EditorGUILayout.PropertyField(property.FindPropertyRelative("assetReference"), GUIContent.none, true);
		}
	}
}
#endif