70 lines
1.9 KiB
C#
70 lines
1.9 KiB
C#
//-----------------------------------------------------------------------------
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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.Linq.Expressions;
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using System.Runtime;
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public sealed class VariableValue<T> : EnvironmentLocationValue<T>
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{
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public VariableValue()
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: base()
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{
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}
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public VariableValue(Variable variable)
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: base()
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{
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this.Variable = variable;
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}
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public Variable Variable
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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.Variable; }
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}
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protected override void CacheMetadata(CodeActivityMetadata metadata)
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{
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if (this.Variable == null)
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{
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metadata.AddValidationError(SR.VariableMustBeSet);
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}
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else
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{
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if (!(this.Variable is Variable<T>) && !TypeHelper.AreTypesCompatible(this.Variable.Type, typeof(T)))
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{
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metadata.AddValidationError(SR.VariableTypeInvalid(this.Variable, typeof(T), this.Variable.Type));
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}
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if (!this.Variable.IsInTree)
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{
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metadata.AddValidationError(SR.VariableShouldBeOpen(this.Variable.Name));
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}
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if (!metadata.Environment.IsVisible(this.Variable))
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{
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metadata.AddValidationError(SR.VariableNotVisible(this.Variable.Name));
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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 (Variable != null && !string.IsNullOrEmpty(Variable.Name))
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{
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return Variable.Name;
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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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