更新demo

更新demo

UnityProject/Packages/YooAsset/Runtime/ResourceManager/Handle/HandleBase.cs

@@ -0,0 +1,161 @@
+using System;
+using System.Collections;
+
+namespace YooAsset
+{
+    public abstract class HandleBase : IEnumerator
+    {
+        private readonly AssetInfo _assetInfo;
+        internal ProviderBase Provider { private set; get; }
+
+        internal HandleBase(ProviderBase provider)
+        {
+            Provider = provider;
+            _assetInfo = provider.MainAssetInfo;
+        }
+        internal abstract void InvokeCallback();
+
+        /// <summary>
+        /// 获取资源信息
+        /// </summary>
+        public AssetInfo GetAssetInfo()
+        {
+            return _assetInfo;
+        }
+
+        /// <summary>
+        /// 获取下载报告
+        /// </summary>
+        public DownloadStatus GetDownloadStatus()
+        {
+            if (IsValidWithWarning == false)
+            {
+                return DownloadStatus.CreateDefaultStatus();
+            }
+            return Provider.GetDownloadStatus();
+        }
+
+        /// <summary>
+        /// 当前状态
+        /// </summary>
+        public EOperationStatus Status
+        {
+            get
+            {
+                if (IsValidWithWarning == false)
+                    return EOperationStatus.None;
+
+                return Provider.Status;
+            }
+        }
+
+        /// <summary>
+        /// 最近的错误信息
+        /// </summary>
+        public string LastError
+        {
+            get
+            {
+                if (IsValidWithWarning == false)
+                    return string.Empty;
+                return Provider.Error;
+            }
+        }
+
+        /// <summary>
+        /// 加载进度
+        /// </summary>
+        public float Progress
+        {
+            get
+            {
+                if (IsValidWithWarning == false)
+                    return 0;
+                return Provider.Progress;
+            }
+        }
+
+        /// <summary>
+        /// 是否加载完毕
+        /// </summary>
+        public bool IsDone
+        {
+            get
+            {
+                if (IsValidWithWarning == false)
+                    return false;
+                return Provider.IsDone;
+            }
+        }
+
+        /// <summary>
+        /// 句柄是否有效
+        /// </summary>
+        public bool IsValid
+        {
+            get
+            {
+                if (Provider != null && Provider.IsDestroyed == false)
+                    return true;
+                else
+                    return false;
+            }
+        }
+
+        /// <summary>
+        /// 句柄是否有效
+        /// </summary>
+        internal bool IsValidWithWarning
+        {
+            get
+            {
+                if (Provider != null && Provider.IsDestroyed == false)
+                {
+                    return true;
+                }
+                else
+                {
+                    if (Provider == null)
+                        YooLogger.Warning($"Operation handle is released : {_assetInfo.AssetPath}");
+                    else if (Provider.IsDestroyed)
+                        YooLogger.Warning($"Provider is destroyed : {_assetInfo.AssetPath}");
+                    return false;
+                }
+            }
+        }
+
+        /// <summary>
+        /// 释放句柄
+        /// </summary>
+        internal void ReleaseInternal()
+        {
+            if (IsValidWithWarning == false)
+                return;
+            Provider.ReleaseHandle(this);
+            Provider = null;
+        }
+
+        #region 异步操作相关
+        /// <summary>
+        /// 异步操作任务
+        /// </summary>
+        public System.Threading.Tasks.Task Task
+        {
+            get { return Provider.Task; }
+        }
+
+        // 协程相关
+        bool IEnumerator.MoveNext()
+        {
+            return !IsDone;
+        }
+        void IEnumerator.Reset()
+        {
+        }
+        object IEnumerator.Current
+        {
+            get { return Provider; }
+        }
+        #endregion
+    }
+}