TypeCollectionDesigner.xaml.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / Tools / System.Activities.Core.Presentation / System / Activities / Presentation / TypeCollectionDesigner.xaml.cs / 1586724 / TypeCollectionDesigner.xaml.cs
                        
                        
                            //---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------

namespace System.Activities.Presentation 
{
    using System; 
    using System.Activities.Presentation.Model; 
    using System.Activities.Presentation.View;
    using System.Collections.Generic; 
    using System.Collections.ObjectModel;
    using System.Collections.Specialized;
    using System.Diagnostics.CodeAnalysis;
    using System.Globalization; 
    using System.Linq;
    using System.Runtime; 
    using System.Windows; 
    using System.Windows.Controls;
    using System.Windows.Input; 
    using System.ComponentModel;
    using System.Windows.Threading;
    using System.Windows.Data;
 
    [Fx.Tag.XamlVisible(false)]
    partial class TypeCollectionDesigner 
    { 
        public static readonly DependencyProperty ContextProperty = DependencyProperty.Register(
            "Context", 
            typeof(EditingContext),
            typeof(TypeCollectionDesigner),
            new UIPropertyMetadata(null));
 
        [SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes",
            Justification = "Type RoutedCommand is immutable.")] 
        public static readonly ICommand AddNewTypeCommand = new RoutedCommand("AddNewType", typeof(TypeCollectionDesigner)); 

        DataGridHelper dgHelper; 
        ObservableCollection wrapperCollection;

        public TypeCollectionDesigner()
        { 
            InitializeComponent();
        } 
 
        // The collection of Type objects to display when type collection designer is opened.
        internal IEnumerable InitialTypeCollection 
        {
            set
            {
                this.wrapperCollection = new ObservableCollection(value.Select(type => new TypeWrapper(type))); 
                this.typesDataGrid.ItemsSource = this.wrapperCollection;
            } 
        } 

        // The collction of Type objects in the type collection designer when user clicks OK. 
        public IEnumerable UpdatedTypeCollection
        {
            get
            { 
                return wrapperCollection.Select(wrapper => wrapper.Type);
            } 
        } 

        public EditingContext Context 
        {
            get { return (EditingContext)GetValue(ContextProperty); }
            set { SetValue(ContextProperty, value); }
        } 

        public bool AllowDuplicate 
        { 
            get;
            set; 
        }

        internal WorkflowElementDialog ParentDialog
        { 
            get;
            set; 
        } 

        internal bool OnOK() 
        {
            if (!this.AllowDuplicate)
            {
                List list = new List(); 
                foreach (TypeWrapper tw in this.wrapperCollection)
                { 
                    if (list.Any(entry => Type.Equals(entry.Type, tw.Type))) 
                    {
                        ErrorReporting.ShowErrorMessage(string.Format(CultureInfo.CurrentCulture, (string)this.FindResource("duplicateEntryErrorMessage"), TypeNameHelper.GetDisplayName(tw.Type, true))); 
                        return false;
                    }
                    list.Add(tw);
                } 
            }
            return true; 
        } 

        // The DataGrid does not bubble up KeyDown event and we expect the upper window to be closed when ESC key is down. 
        // Thus we added an event handler in DataGrid to handle ESC key and closes the uppper window.
        void OnTypesDataGridRowKeyDown(object sender, KeyEventArgs args)
        {
            DataGridRow row = (DataGridRow)sender; 
            if (args.Key == Key.Escape && !row.IsEditing && this.ParentDialog != null)
            { 
                this.ParentDialog.CloseDialog(false); 
            }
        } 

        protected override void OnInitialized(EventArgs e)
        {
            this.dgHelper = new DataGridHelper(this.typesDataGrid, this); 
            this.dgHelper.AddNewRowContent = this.FindResource("addNewRowLabel");
            this.dgHelper.AddNewRowCommand = AddNewTypeCommand; 
 
            base.OnInitialized(e);
        } 

        void OnAddTypeExecuted(object sender, ExecutedRoutedEventArgs e)
        {
            var newEntry = new TypeWrapper(typeof(Object)); 
            this.wrapperCollection.Add(newEntry);
            this.dgHelper.BeginRowEdit(newEntry); 
            e.Handled = true; 
        }
 
        sealed class TypeWrapper : DependencyObject
        {
            public static readonly DependencyProperty TypeProperty =
                DependencyProperty.Register("Type", typeof(Type), typeof(TypeWrapper)); 

            //Default constructor is required by DataGrid to load NewItemPlaceHolder row and this constructor will never be called. 
            //Since we've already customized the new row template and hooked over creating new object event. 
            public TypeWrapper()
            { 
                throw FxTrace.Exception.AsError(new NotSupportedException());
            }

            public TypeWrapper(Type type) 
            {
                this.Type = type; 
            } 

            public Type Type 
            {
                get { return (Type)GetValue(TypeProperty); }
                set { SetValue(TypeProperty, value); }
            } 

            // For screen reader to read the DataGrid row. 
            public override string ToString() 
            {
                if (this.Type != null && !string.IsNullOrEmpty(this.Type.Name)) 
                {
                    return this.Type.Name;
                }
                return "null"; 
            }
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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TypeCollectionDesigner.xaml.cs source code in C# .NET

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