private void MainNodeDragOver(object sender, DragEventArgs e)
{
e.Handled = true;
var dragingItemViewModel = (StyleItemViewModel)e.Data.GetData(typeof(StyleItemViewModel));
var currentItemViewModel = ((StyleBuilderViewModel)(((Grid)sender)).DataContext);
var dragingItem = dragingItemViewModel.StyleItem;
var currentItem = currentItemViewModel.RootStyleItem.StyleItem;
var dragingItemParent = dragingItem.Parent;
var currentItemParent = currentItem.Parent;
if (dragingItem != null && currentItem != null && dragingItem != currentItem && !IsParent(currentItem, dragingItem))
{
if (currentItem.CanContainStyleItem(dragingItem))
{
dragingItemParent.Children.Remove(dragingItem);
currentItem.Children.Insert(0, dragingItem);
dragingItemViewModel = StyleItemViewModel.FindStyleItemViewModel(currentItemViewModel.RootStyleItem.StyleItemViewModels, dragingItem);
}
}
if (dragingItemViewModel != null)
{
dragingItemViewModel.IsSelected = true;
}
}
private void TreeViewItemDragOver(object sender, DragEventArgs e)
{
e.Handled = true;
var dragingItemViewModel = (StyleItemViewModel)e.Data.GetData(typeof(StyleItemViewModel));
var currentItemViewModel = ((StyleItemViewModel)(((Grid)sender)).DataContext);
var dragingItem = dragingItemViewModel.StyleItem;
var currentItem = currentItemViewModel.StyleItem;
var dragingItemParent = dragingItem.Parent;
var currentItemParent = currentItem.Parent;
if (dragingItem != null && currentItem != null && dragingItem != currentItem && !IsParent(currentItem, dragingItem))
{
if (currentItem.CanContainStyleItem(dragingItem))
{
dragingItemParent.Children.Remove(dragingItem);
currentItem.Children.Insert(0, dragingItem);
dragingItemViewModel = StyleItemViewModel.FindStyleItemViewModel(currentItemViewModel.ParentViewModel.StyleItemViewModels, dragingItem);
}
else if (dragingItemParent == currentItemParent)
{
var dragingIndex = dragingItemParent.Children.IndexOf(dragingItem);
var currentIndex = dragingItemParent.Children.IndexOf(currentItem);
dragingItemParent.Children.Move(dragingIndex, currentIndex);
}
else
{
if (currentItemParent is StyleLayerListItem && ((StyleLayerListItem)currentItemParent).CanContainStyleItem(dragingItem))
{
dragingItemParent.Children.Remove(dragingItem);
var currentIndex = currentItemParent.Children.IndexOf(currentItem);
currentItemParent.Children.Insert(currentIndex, dragingItem);
dragingItemViewModel = StyleItemViewModel.FindStyleItemViewModel(currentItemViewModel.ParentViewModel.StyleItemViewModels, dragingItem);
}
else
{
e.Effects = DragDropEffects.None;
}
}
if (dragingItemViewModel != null)
{
dragingItemViewModel.IsSelected = true;
}
}
}
