static void Fe_PreviewMouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
SelectableDesignerItemViewModelBase selectableDesignerItemViewModelBase =
(SelectableDesignerItemViewModelBase)((FrameworkElement)sender).DataContext;
if (selectableDesignerItemViewModelBase != null)
{
if ((Keyboard.Modifiers & (ModifierKeys.Shift | ModifierKeys.Control)) != ModifierKeys.None)
{
if ((Keyboard.Modifiers & (ModifierKeys.Shift)) != ModifierKeys.None)
{
selectableDesignerItemViewModelBase.IsSelected = !selectableDesignerItemViewModelBase.IsSelected;
}
if ((Keyboard.Modifiers & (ModifierKeys.Control)) != ModifierKeys.None)
{
selectableDesignerItemViewModelBase.IsSelected = !selectableDesignerItemViewModelBase.IsSelected;
}
}
else if (!selectableDesignerItemViewModelBase.IsSelected)
{
foreach (SelectableDesignerItemViewModelBase item in selectableDesignerItemViewModelBase.Parent.SelectedItems)
{
selectableDesignerItemViewModelBase.IsSelected = false;
}
selectableDesignerItemViewModelBase.Parent.SelectedItems.Clear();
selectableDesignerItemViewModelBase.IsSelected = true;
}
}
}
private void ExecuteRemoveItemCommand(object parameter)
{
if (parameter is SelectableDesignerItemViewModelBase)
{
SelectableDesignerItemViewModelBase item = (SelectableDesignerItemViewModelBase)parameter;
items.Remove(item);
}
}
private void ExecuteAddItemCommand(object parameter)
{
if (parameter is SelectableDesignerItemViewModelBase)
{
SelectableDesignerItemViewModelBase item = (SelectableDesignerItemViewModelBase)parameter;
item.Parent = this;
items.Add(item);
}
}