70 lines
2.0 KiB
C#
70 lines
2.0 KiB
C#
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//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.Activities.Expressions
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{
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using System.Collections.Generic;
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using System.Linq.Expressions;
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using System.Runtime;
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using System.Windows.Markup;
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public sealed class ArgumentReference<T> : EnvironmentLocationReference<T>
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{
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RuntimeArgument targetArgument;
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public ArgumentReference()
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{
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}
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public ArgumentReference(string argumentName)
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{
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this.ArgumentName = argumentName;
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}
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public string ArgumentName
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{
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get;
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set;
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}
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public override LocationReference LocationReference
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{
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get { return this.targetArgument; }
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}
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protected override void CacheMetadata(CodeActivityMetadata metadata)
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{
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this.targetArgument = null;
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if (string.IsNullOrEmpty(this.ArgumentName))
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{
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metadata.AddValidationError(SR.ArgumentNameRequired);
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}
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else
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{
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this.targetArgument = ActivityUtilities.FindArgument(this.ArgumentName, this);
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if (this.targetArgument == null)
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{
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metadata.AddValidationError(SR.ArgumentNotFound(this.ArgumentName));
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}
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else if (this.targetArgument.Type != typeof(T))
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{
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metadata.AddValidationError(SR.ArgumentTypeMustBeCompatible(this.ArgumentName, this.targetArgument.Type, typeof(T)));
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}
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}
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}
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public override string ToString()
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{
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if (!string.IsNullOrEmpty(this.ArgumentName))
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{
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return this.ArgumentName;
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}
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return base.ToString();
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}
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}
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}
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