public interface IWpfControl
{
    string Name { get; set; }
    double ActualHeight { get; }
    double ActualWidth { get; }
    double Height { get; set; }
    double Width { get; set; }
    Size InitialSize { get; set; }
}

public interface IWpfControlWithItems : IWpfControl
{
    ItemCollection Items { get; }
}

public class WpfControlFactory
{
    public static IWpfControl CreateWpfControl(WpfControl wpfControl)
    {
        object[] controlItems = null;
        IWpfControl control = null;
        switch (wpfControl)
        {
            case WpfControl.Button:
                control = new WpfButton { InitialSize = new Size(85, 20) };
                break;
            case WpfControl.CheckBox:
                control = new WpfCheckBox { InitialSize = new Size(85, 20) };
                break;
            case WpfControl.TextBox:
                control = new WpfTextBox { InitialSize = new Size(75, 20) };
                break;
            case WpfControl.ComboBox:
                break;
            case WpfControl.ListBox:
                control = new WpfListBox { InitialSize = new Size(100, 110) };
                controlItems = CreateListItems();
                break;
            case WpfControl.GroupBox:
                control = new WpfGroupBox { InitialSize = new Size(120, 100) };
                break;
            case WpfControl.RadioButton:
                control = new WpfRadioButton { InitialSize = new Size(85, 20) };
                break;
            case WpfControl.TextBlock:
                control = new WpfTextBlock { InitialSize = new Size(75, 20) };
                break;
            case WpfControl.Image:
                control = new WpfImage { InitialSize = new Size(100, 100) };
                break;
            case WpfControl.HScrollBar:
                control = new WpfHScrollBar { InitialSize = new Size(130, 20), Orientation = Orientation.Horizontal };
                break;
            case WpfControl.VScrollBar:
                control = new WpfVScrollBar { InitialSize = new Size(20, 130), Orientation = Orientation.Horizontal };
                break;
            case WpfControl.Slider:
                control = new WpfSlider { InitialSize = new Size(130, 20) };
                break;
            case WpfControl.ProgressBar:
                control = new WpfProgressBar { InitialSize = new Size(130, 15), Value = 75};
                break;
            case WpfControl.ListView:
                var gridView = new GridView();
                gridView.Columns.Add(new GridViewColumn
                {
                    Header = "Items",
                });
                control = new WpfListView { InitialSize = new Size(100, 110), View = gridView };
                controlItems = CreateListItems();
                break;
            case WpfControl.TreeView:
                control = new WpfTreeView { InitialSize = new Size(150, 100) };
                controlItems = CreateTreeViewItems();
                break;
            case WpfControl.TabControl:
                control = new WpfTabControl { InitialSize = new Size(120, 80) };
                controlItems = CreateTabControlItems();
                break;
            case WpfControl.RichTextBox:
                control = new WpfRichTextBox { InitialSize = new Size(80, 80) };
                break;
            case WpfControl.DatePicker:
                control = new WpfDatePicker { InitialSize = new Size(130, 25) };
                break;
        }

        if (control != null)
        {
            control.Name = Consts.DefaultEaControlName;
        }

        var controlWithItems = control as IWpfControlWithItems;
        if (controlWithItems != null)
        {
            AddElementToItem(controlWithItems, controlItems);
        }

        return control;
    }

    private static void AddElementToItem(IWpfControlWithItems wpfControl, params object[] items)
    {
        foreach (var item in items)
        {
            wpfControl.Items.Add(item);
        }
    }

    private static object[] CreateTreeViewItems()
    {
        var rootExpandedNode = new TreeViewItem { Header = "Expanded Node", IsExpanded = true };
        var expandedNode = new TreeViewItem { Header = "Expanded Node", IsExpanded = true };
        var collapsedNode = new TreeViewItem { Header = "Collapsed Node", IsExpanded = false };
        var leaf1 = new TreeViewItem { Header = "Leaf" };
        var leaf2 = new TreeViewItem { Header = "Leaf" };
        var leaf3 = new TreeViewItem { Header = "Leaf" };

        expandedNode.Items.Add(leaf1);
        expandedNode.Items.Add(leaf2);
        rootExpandedNode.Items.Add(expandedNode);
        rootExpandedNode.Items.Add(collapsedNode);

        return new object[] { rootExpandedNode, leaf3};
    }

    private static object[] CreateTabControlItems()
    {
        return new object[]
                {
                    new TabItem { Header = "Tab1"} ,
                    new TabItem { Header = "Tab2" },
                    new TabItem { Header = "Tab3" }
                };
    }

    private static object[] CreateListItems()
    {
        return new object[] { "item1", "item2", "item3", "item4", "item5" };
    }
}