49 lines
2.6 KiB
C#
49 lines
2.6 KiB
C#
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namespace System.Workflow.ComponentModel.Serialization
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{
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using System;
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using System.CodeDom;
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using System.ComponentModel;
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using System.ComponentModel.Design.Serialization;
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using System.Workflow.ComponentModel.Compiler;
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using System.Collections;
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using System.Collections.Specialized;
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using System.Collections.Generic;
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// This serializer will serialize any ICollection<String> object into code statements that constructs the collection.
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// The default serializer serializes the collection as resource because ICollection<String> is serializable.
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// We originally add this serializer to deal with the SynchronizationHandles property on SynchronizationScopeActivity.
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// It was a problem because this serializer will be invoked for any property of ICollection<String> type. Now I've
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// made this generic enough to be used by any such properties.
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internal sealed class SynchronizationHandlesCodeDomSerializer : CodeDomSerializer
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{
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public override object Serialize(IDesignerSerializationManager manager, object obj)
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{
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if (manager == null)
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throw new ArgumentNullException("manager");
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if (obj == null)
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throw new ArgumentNullException("obj");
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CodeExpression retVal = null;
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CodeStatementCollection statements = manager.Context[typeof(CodeStatementCollection)] as CodeStatementCollection;
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System.Diagnostics.Debug.Assert(statements != null);
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if (statements != null)
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{
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Activity activity = (Activity)manager.Context[typeof(Activity)];
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CodeExpression objectExpression = SerializeToExpression(manager, activity);
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ICollection<String> handles = obj as ICollection<String>;
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if (handles == null)
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throw new ArgumentException(SR.GetString(SR.Error_UnexpectedArgumentType, typeof(StringCollection).FullName), "obj");
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string variableName = GetUniqueName(manager, new StringCollection());
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statements.Add(new CodeVariableDeclarationStatement(obj.GetType(), variableName, new CodeObjectCreateExpression(obj.GetType())));
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foreach (string handle in handles)
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statements.Add(new CodeMethodInvokeExpression(new CodeMethodReferenceExpression(new CodeVariableReferenceExpression(variableName), "Add"), new CodeExpression[] { new CodePrimitiveExpression(handle) }));
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retVal = new CodeVariableReferenceExpression(variableName);
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}
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return retVal;
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}
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}
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}
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