89 lines
3.1 KiB
C#
89 lines
3.1 KiB
C#
namespace System.Workflow.Activities
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{
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using System;
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using System.Text;
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using System.Reflection;
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using System.Collections;
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using System.CodeDom;
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using System.ComponentModel;
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using System.ComponentModel.Design;
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using System.Drawing;
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using System.Workflow.ComponentModel;
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using System.Workflow.ComponentModel.Design;
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using System.Workflow.ComponentModel.Serialization;
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using System.Collections.Generic;
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using System.Workflow.ComponentModel.Compiler;
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[SRDescription(SR.CodeActivityDescription)]
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[ToolboxItem(typeof(ActivityToolboxItem))]
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[Designer(typeof(CodeDesigner), typeof(IDesigner))]
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[ToolboxBitmap(typeof(CodeActivity), "Resources.code.png")]
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[DefaultEvent("ExecuteCode")]
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[SRCategory(SR.Standard)]
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[ActivityValidator(typeof(CodeActivityValidator))]
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[Obsolete("The System.Workflow.* types are deprecated. Instead, please use the new types from System.Activities.*")]
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public sealed class CodeActivity : Activity
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{
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#region Constructors
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public CodeActivity()
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{
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}
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public CodeActivity(string name)
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: base(name)
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{
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}
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#endregion
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public static readonly DependencyProperty ExecuteCodeEvent = DependencyProperty.Register("ExecuteCode", typeof(EventHandler), typeof(CodeActivity));
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protected override sealed ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)
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{
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base.RaiseEvent(CodeActivity.ExecuteCodeEvent, this, EventArgs.Empty);
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return ActivityExecutionStatus.Closed;
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}
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[SRCategory(SR.Handlers)]
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[SRDescription(SR.UserCodeHandlerDescr)]
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[MergableProperty(false)]
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public event EventHandler ExecuteCode
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{
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add
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{
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base.AddHandler(ExecuteCodeEvent, value);
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}
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remove
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{
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base.RemoveHandler(ExecuteCodeEvent, value);
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}
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}
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private class CodeActivityValidator : ActivityValidator
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{
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public override ValidationErrorCollection Validate(ValidationManager manager, object obj)
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{
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ValidationErrorCollection errors = new ValidationErrorCollection();
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CodeActivity code = obj as CodeActivity;
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if (code == null)
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throw new InvalidOperationException();
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// This violates the P || C validation condition, but we are compiling with csc.exe here!
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if (code.GetInvocationList<EventHandler>(CodeActivity.ExecuteCodeEvent).Length == 0 &&
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code.GetBinding(CodeActivity.ExecuteCodeEvent) == null)
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{
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Hashtable hashtable = code.GetValue(WorkflowMarkupSerializer.EventsProperty) as Hashtable;
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if (hashtable == null || hashtable["ExecuteCode"] == null)
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errors.Add(ValidationError.GetNotSetValidationError("ExecuteCode"));
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}
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errors.AddRange(base.Validate(manager, obj));
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return errors;
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}
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}
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}
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}
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