113 lines
2.8 KiB
C#
113 lines
2.8 KiB
C#
//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.Activities
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{
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using System;
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using System.Runtime;
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using System.Runtime.Serialization;
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[DataContract]
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public abstract class Handle
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{
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ActivityInstance owner;
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// We check uninitialized because it should be false more often
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bool isUninitialized;
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protected Handle()
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{
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this.isUninitialized = true;
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}
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public ActivityInstance Owner
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{
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get
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{
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return this.owner;
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}
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}
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public string ExecutionPropertyName
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{
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get
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{
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return this.GetType().FullName;
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}
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}
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[DataMember(EmitDefaultValue = false, Name = "owner")]
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internal ActivityInstance SerializedOwner
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{
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get { return this.owner; }
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set { this.owner = value; }
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}
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[DataMember(EmitDefaultValue = false, Name = "isUninitialized")]
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internal bool SerializedIsUninitialized
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{
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get { return this.isUninitialized; }
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set { this.isUninitialized = value; }
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}
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[DataMember(EmitDefaultValue = false)]
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internal bool CanBeRemovedWithExecutingChildren
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{
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get;
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set;
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}
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internal bool IsInitialized
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{
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get
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{
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return !this.isUninitialized;
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}
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}
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internal static string GetPropertyName(Type handleType)
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{
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Fx.Assert(TypeHelper.AreTypesCompatible(handleType, typeof(Handle)), "must pass in a Handle-based type here");
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return handleType.FullName;
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}
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internal void Initialize(HandleInitializationContext context)
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{
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this.owner = context.OwningActivityInstance;
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this.isUninitialized = false;
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OnInitialize(context);
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}
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internal void Reinitialize(ActivityInstance owner)
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{
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this.owner = owner;
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}
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internal void Uninitialize(HandleInitializationContext context)
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{
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OnUninitialize(context);
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this.isUninitialized = true;
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}
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protected virtual void OnInitialize(HandleInitializationContext context)
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{
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}
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protected virtual void OnUninitialize(HandleInitializationContext context)
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{
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}
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protected void ThrowIfUninitialized()
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{
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if (this.isUninitialized)
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{
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throw FxTrace.Exception.AsError(new InvalidOperationException(SR.HandleNotInitialized));
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}
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}
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}
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}
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