//-----------------------------------------------------------------------
public void DragStart(object sender, DragStartedEventArgs e)
{
if (DataItem is CollectionChildItem)
{
CollectionChildItem itemBase = (CollectionChildItem)DataItem;
DataItem collection = itemBase.ParentCollection;
if (collection != null)
{
draggedImage = InsertionAdorner.ConvertElementToImage(this);
DataObject dragData = new DataObject("CollectionChildItem", DataItem);
dragData.SetData("Element", this);
DragDrop.DoDragDrop(this, dragData, DragDropEffects.Move);
}
}
else if (DataItem is TreeItem)
{
TreeItem itemBase = (TreeItem)DataItem;
TreeItem collection = (TreeItem)itemBase.Parent;
if (collection != null)
{
draggedImage = InsertionAdorner.ConvertElementToImage(this);
DataObject dragData = new DataObject("TreeItem", DataItem);
dragData.SetData("Element", this);
DragDrop.DoDragDrop(this, dragData, DragDropEffects.Move);
}
}
else if (DataItem is CommentItem)
{
CommentItem itemBase = (CommentItem)DataItem;
DataItem collection = itemBase.Parent;
if (collection != null && itemBase.CanReorder)
{
draggedImage = InsertionAdorner.ConvertElementToImage(this);
DataObject dragData = new DataObject("CommentItem", DataItem);
dragData.SetData("Element", this);
DragDrop.DoDragDrop(this, dragData, DragDropEffects.Move);
}
}
}
//#############################################################################################
#region Mouse Events
//-----------------------------------------------------------------------
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
if (Data.Parent is CollectionChildItem && Data.Parent.Parent is GraphCollectionItem)
{
draggedImage = InsertionAdorner.ConvertElementToImage(this);
DataObject dragData = new DataObject("GraphNodeData", Data.Parent);
dragData.SetData("Element", this);
DragDrop.DoDragDrop(this, dragData, DragDropEffects.Move);
e.Handled = true;
}
else if (Data is CommentItem && Data.Parent is GraphCollectionItem)
{
draggedImage = InsertionAdorner.ConvertElementToImage(this);
DataObject dragData = new DataObject("GraphNodeData", Data);
dragData.SetData("Element", this);
DragDrop.DoDragDrop(this, dragData, DragDropEffects.Move);
e.Handled = true;
}
}