EventSinkActivityDesigner.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / Designers / EventSinkActivityDesigner.cs / 1305376 / EventSinkActivityDesigner.cs
                        

                        
                            namespace System.Workflow.Activities 
{
    using System;
    using System.Text;
    using System.Reflection; 
    using System.Collections;
    using System.CodeDom; 
    using System.ComponentModel; 
    using System.ComponentModel.Design;
    using System.Drawing; 
    using System.Drawing.Drawing2D;
    using System.Workflow.ComponentModel;
    using System.Workflow.ComponentModel.Design;
    using System.Workflow.ComponentModel.Compiler; 
    using System.Workflow.Activities.Common;
 
    #region Class HandleExternalEventActivityDesigner 
    [ActivityDesignerTheme(typeof(EventSinkDesignerTheme))]
    internal class HandleExternalEventActivityDesigner : ActivityDesigner 
    {
        protected override void PreFilterProperties(IDictionary properties)
        {
            base.PreFilterProperties(properties); 

            object corrRefProperty = properties["CorrelationToken"]; 
 
            HandleExternalEventActivity eventSink = Activity as HandleExternalEventActivity;
 
            AddRemoveCorrelationToken(eventSink.InterfaceType, properties, corrRefProperty);

            Type type = eventSink.InterfaceType;
            if (type == null) 
                return;
 
            AddRemoveCorrelationToken(type, properties, corrRefProperty); 

            eventSink.GetParameterPropertyDescriptors(properties); 
        }

        private void AddRemoveCorrelationToken(Type interfaceType, IDictionary properties, object corrRefProperty)
        { 
            if (interfaceType != null)
            { 
                object[] corrProvAttribs = interfaceType.GetCustomAttributes(typeof(CorrelationProviderAttribute), false); 
                object[] corrParamAttribs = interfaceType.GetCustomAttributes(typeof(CorrelationParameterAttribute), false);
                if (corrProvAttribs.Length != 0 || corrParamAttribs.Length != 0) 
                {
                    if (!properties.Contains("CorrelationToken"))
                        properties.Add("CorrelationToken", corrRefProperty);
                    return; 
                }
            } 
            if (properties.Contains("CorrelationToken")) 
                properties.Remove("CorrelationToken");
        } 

        protected override void OnActivityChanged(ActivityChangedEventArgs e)
        {
            base.OnActivityChanged(e); 

            if (e.Member != null) 
            { 
                if (e.Member.Name == "InterfaceType")
                { 
                    if (Activity.Site != null)
                    {
                        Type interfaceType = e.NewValue as Type;
                        if (interfaceType != null) 
                            new ExternalDataExchangeInterfaceTypeFilterProvider(Activity.Site).CanFilterType(interfaceType, true);
 
                        HandleExternalEventActivity eventSinkActivity = e.Activity as HandleExternalEventActivity; 
                        PropertyDescriptorUtils.SetPropertyValue(Activity.Site, TypeDescriptor.GetProperties(Activity)["EventName"], Activity, String.Empty);
 
                        IExtendedUIService extUIService = (IExtendedUIService)Activity.Site.GetService(typeof(IExtendedUIService));
                        if (extUIService == null)
                            throw new Exception(SR.GetString(SR.General_MissingService, typeof(IExtendedUIService).FullName));
                    } 
                }
                else if ((e.Member.Name == "EventName") 
                    && e.Activity is HandleExternalEventActivity) 
                {
                    (e.Activity as HandleExternalEventActivity).ParameterBindings.Clear(); 
                }

                if (e.Member.Name == "InterfaceType" || e.Member.Name == "EventName"  || e.Member.Name == "CorrelationToken")
                    TypeDescriptor.Refresh(e.Activity); 
            }
        } 
    } 
    #endregion
 
    #region EventSinkDesignerTheme
    internal sealed class EventSinkDesignerTheme : ActivityDesignerTheme
    {
        public EventSinkDesignerTheme(WorkflowTheme theme) 
            : base(theme)
        { 
            this.ForeColor = Color.FromArgb(0xFF, 0x00, 0x00, 0x00); 
            this.BorderColor = Color.FromArgb(0xFF, 0x9C, 0xAE, 0x73);
            this.BorderStyle = DashStyle.Solid; 
            this.BackColorStart = Color.FromArgb(0xFF, 0xF5, 0xFB, 0xE1);
            this.BackColorEnd = Color.FromArgb(0xFF, 0xD6, 0xEB, 0x84);
            this.BackgroundStyle = LinearGradientMode.Horizontal;
        } 
    }
    #endregion 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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