private void OnPropertyValueChanged(object sender, EventArgs e)
{
var value = AssociatedObject.GetValue(descriptor.DependencyProperty);
if (PropertyChangedCommand == null ||
!PropertyChangedCommand.CanExecute(value))
{
return;
}
PropertyChangedCommand.Execute(value);
}
protected override void OnMouseDown(MouseButtonEventArgs e)
{
base.OnMouseDown(e);
_propertyChangeCommands = new List <PropertyChangedCommand>();
if (this.DataContext is DesignerItem dataContextDesignerItem &&
dataContextDesignerItem.Parent is DesignerCanvas designer)
{
var designerItems = designer.SelectionService.CurrentSelection.OfType <DesignerItem>();
foreach (DesignerItem item in designerItems)
{
if (item.DataContext is ElementVM elementvm)
{
Element element = elementvm.Element;
PropertyChangedCommand newPropertyChangedCommand = new PropertyChangedCommand(element.Position, element.Position, nameof(element.Position), element, false);
_propertyChangeCommands.Add(newPropertyChangedCommand);
}
else
{
throw new Exception("DataContext of DesignerItem should be type of ElementVM");
}
}
}