InvokeMethodActivityDesigner.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 / InvokeMethodActivityDesigner.cs / 1305376 / InvokeMethodActivityDesigner.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 CallExternalMethodActivityDesigner 
    [ActivityDesignerTheme(typeof(InvokeMethodDesignerTheme))]
    internal class CallExternalMethodActivityDesigner : ActivityDesigner 
    {
        protected override void PreFilterProperties(IDictionary properties)
        {
            base.PreFilterProperties(properties); 

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

            Type type = invokeMethod.InterfaceType;
            if (type == null)
                return; 

            AddRemoveCorrelationToken(type, properties, corrRefProperty); 
 
            invokeMethod.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); 

                        CallExternalMethodActivity invokeActivity = e.Activity as CallExternalMethodActivity; 
                        PropertyDescriptorUtils.SetPropertyValue(Activity.Site, TypeDescriptor.GetProperties(Activity)["MethodName"], 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));
                    }
                } 

                if ((e.Member.Name == "MethodName") 
                    && e.Activity is CallExternalMethodActivity) 
                    (e.Activity as CallExternalMethodActivity).ParameterBindings.Clear();
 
                if (e.Member.Name == "InterfaceType" || e.Member.Name == "MethodName" || e.Member.Name == "CorrelationToken")
                    TypeDescriptor.Refresh(e.Activity);
            }
        } 

    } 
    #endregion 

    #region InvokeMethodDesignerTheme 
    internal sealed class InvokeMethodDesignerTheme : ActivityDesignerTheme
    {
        public InvokeMethodDesignerTheme(WorkflowTheme theme)
            : base(theme) 
        {
            this.ForeColor = Color.FromArgb(0xFF, 0x00, 0x00, 0x00); 
            this.BorderColor = Color.FromArgb(0xFF, 0x73, 0x79, 0xA5); 
            this.BorderStyle = DashStyle.Solid;
            this.BackColorStart = Color.FromArgb(0xFF, 0xDF, 0xE8, 0xFF); 
            this.BackColorEnd = Color.FromArgb(0xFF, 0x95, 0xB3, 0xFF);
            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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