DesignerItem.cs
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using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
namespace RoboforkApp
{
public class DesignerItem : ContentControl
{
public bool IsSelected
{
get { return (bool)GetValue(IsSelectedProperty); }
set { SetValue(IsSelectedProperty, value); }
}
public static readonly DependencyProperty IsSelectedProperty =
DependencyProperty.Register("IsSelected", typeof(bool),
typeof(DesignerItem),
new FrameworkPropertyMetadata(false));
public static readonly DependencyProperty MoveThumbTemplateProperty =
DependencyProperty.RegisterAttached("MoveThumbTemplate", typeof(ControlTemplate), typeof(DesignerItem));
public static ControlTemplate GetMoveThumbTemplate(UIElement element)
{
return (ControlTemplate)element.GetValue(MoveThumbTemplateProperty);
}
public static void SetMoveThumbTemplate(UIElement element, ControlTemplate value)
{
element.SetValue(MoveThumbTemplateProperty, value);
}
static DesignerItem()
{
FrameworkElement.DefaultStyleKeyProperty.OverrideMetadata(typeof(DesignerItem), new FrameworkPropertyMetadata(typeof(DesignerItem)));
}
public DesignerItem()
{
this.Loaded += new RoutedEventHandler(this.DesignerItem_Loaded);
}
protected override void OnPreviewMouseDown(MouseButtonEventArgs e)
{
base.OnPreviewMouseDown(e);
DesignerCanvas designer = VisualTreeHelper.GetParent(this) as DesignerCanvas;
if (designer != null)
{
if ((Keyboard.Modifiers & (ModifierKeys.Shift | ModifierKeys.Control)) != ModifierKeys.None)
{
this.IsSelected = !this.IsSelected;
}
else
{
if (!this.IsSelected)
{
designer.DeselectAll();
this.IsSelected = true;
}
}
}
e.Handled = false;
}
private void DesignerItem_Loaded(object sender, RoutedEventArgs e)
{
if (this.Template != null)
{
ContentPresenter contentPresenter =
this.Template.FindName("PART_ContentPresenter", this) as ContentPresenter;
MoveThumb thumb =
this.Template.FindName("PART_MoveThumb", this) as MoveThumb;
if (contentPresenter != null && thumb != null)
{
UIElement contentVisual =
VisualTreeHelper.GetChild(contentPresenter, 0) as UIElement;
if (contentVisual != null)
{
ControlTemplate template =
DesignerItem.GetMoveThumbTemplate(contentVisual) as ControlTemplate;
if (template != null)
{
thumb.Template = template;
}
}
}
}
}
}
}