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