WF4 Custom activities for message mediation

//*****************************************************************************
//    Description.....WF4 Message Mediation Library
//                                
//    Author..........Roman Kiss, rkiss@pathcom.com
//    Copyright © 2009 ATZ Consulting Inc. (see included license.rtf file)         
//                        
//    Date Created:    07/07/09
//
//    Date        Modified By     Description
//-----------------------------------------------------------------------------
//    07/07/09    Roman Kiss     Initial Revision
//
//*****************************************************************************
//
#region namespaces
using System;
using System.Linq;
using System.Activities;
using System.Activities.Presentation;
using System.Activities.Presentation.Model;
using System.Activities.Presentation.Converters;
using System.Activities.Presentation.PropertyEditing;
using System.Windows;
using System.Reflection;
using System.Xml.Linq;
using Microsoft.VisualBasic.Activities;
#endregion

namespace RKiss.MessageMediationActivityLibrary.Editors
{
    /// <summary>
    /// Editor for IDictionary<string, Argument> property
    /// </summary>
    public class DynamicArgumentDictionaryEditor : DialogPropertyValueEditor
    {
        public DynamicArgumentDictionaryEditor()
        {
            Type type = Type.GetType("System.Activities.Core.Presentation.Themes.EditorCategoryTemplateDictionary, System.Activities.Core.Presentation, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35");
            Uri resourceLocator = new Uri(type.Assembly.GetName().Name + ";component/System/Activities/Core/Presentation/Themes/EditorCategoryTemplateDictionary.xaml", UriKind.RelativeOrAbsolute);
            ResourceDictionary resources = (ResourceDictionary)Application.LoadComponent(resourceLocator);
            base.InlineEditorTemplate = resources["ArgumentCollection_InlineTemplate"] as DataTemplate;
        }

        public override void ShowDialog(PropertyValue propertyValue, IInputElement commandSource)
        {
            ModelPropertyEntryToOwnerActivityConverter converter = new ModelPropertyEntryToOwnerActivityConverter();
            ModelItem activity = (ModelItem)converter.Convert(propertyValue.ParentProperty, typeof(ModelItem), false, null);
            ModelItem item2 = (ModelItem)converter.Convert(propertyValue.ParentProperty, typeof(ModelItem), true, null);

            //workaround: EditingContext context = ((IModelTreeItem)activity).ModelTreeManager.Context;
            Type type = Type.GetType("System.Activities.Presentation.Model.IModelTreeItem, System.Activities.Presentation, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35");
            ModelTreeManager manager = (ModelTreeManager)type.GetProperties().FirstOrDefault(e => e.Name == "ModelTreeManager").GetValue(activity, null);
            EditingContext context = (EditingContext)typeof(ModelTreeManager).GetProperties(BindingFlags.Instance | BindingFlags.NonPublic).FirstOrDefault(e => e.Name == "Context").GetValue(manager, null);

            ModelItemDictionary dictionary = item2.Properties[propertyValue.ParentProperty.PropertyName].Dictionary;
            DynamicArgumentDesignerOptions options = new DynamicArgumentDesignerOptions()
            {
                Title = propertyValue.ParentProperty.DisplayName
            };
            if (DynamicArgumentDialog.ShowDialog(activity, dictionary, context, activity.View, options))
            {

            }
        }

    }





    public class DynamicArgumentDictionaryEditor2 : DialogPropertyValueEditor
    {
        public DynamicArgumentDictionaryEditor2()
        {
            Type type = Type.GetType("System.Activities.Presentation.View.EditorResources, System.Activities.Presentation, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35");
            Uri resourceLocator = new Uri(type.Assembly.GetName().Name + ";component/System/WorkflowModel/Design/View/EditorResources.xaml", UriKind.RelativeOrAbsolute);
            ResourceDictionary resources = (ResourceDictionary)Application.LoadComponent(resourceLocator);
            base.InlineEditorTemplate = resources["DynamicArgumentDictionaryInlineTemplate"] as DataTemplate;

            //System.Windows.Resources.StreamResourceInfo xamlResourceInfo = Application.GetResourceStream(resourceLocator);

            //using (System.IO.StreamReader sr1 = new System.IO.StreamReader(xamlResourceInfo.Stream))
            //{
            //    string xamstring = sr1.ReadToEnd();
            //    var xamlObject = System.Windows.Markup.XamlReader.LoadBaml(xamlResourceInfo.Stream, new System.Windows.Markup.ParserContext(), null, true);
            //}

        }
    }


    public class ExpressionValueEditor : DialogPropertyValueEditor
    {

        public ExpressionValueEditor()
        {
            Type type = Type.GetType("System.Activities.Presentation.View.EditorResources, System.Activities.Presentation, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35");
            Uri resourceLocator = new Uri(type.Assembly.GetName().Name + ";component/System/WorkflowModel/Design/View/EditorResources.xaml", UriKind.RelativeOrAbsolute);
            ResourceDictionary resources = (ResourceDictionary)Application.LoadComponent(resourceLocator);
            base.InlineEditorTemplate = resources["inlineExpressionEditorTemplate"] as DataTemplate;

        }

        public override void ShowDialog(PropertyValue propertyValue, IInputElement commandSource)
        {
            string xmltext = ((propertyValue.Value as InArgument<XElement>).Expression as VisualBasicValue<XElement>).ExpressionText;
            MessageBox.Show(xmltext);

            (propertyValue.Value as InArgument<XElement>).Expression = new VisualBasicValue<XElement>("<abc>Hello world</abc>");
        }

    }
}