//respond to an item dropped in my treeview
protected override void OnDragDrop(DragEventArgs e)
{
base.OnDragDrop(e);
TmTreeNode destinationTreeNode = NodeAtEvent(e);
TmNode destinationNode = null;
if (destinationTreeNode != null)
destinationNode = destinationTreeNode.TmNode;
// TmNodeList drop
if (e.Data.GetDataPresent("TmNodeList", false))
{
List<TmNode> nodes = e.Data.GetData("TmNodeList") as List<TmNode>;
if (nodes != null && nodes.Count() > 0)
{
foreach (TmNode node in nodes)
{
if (e.Effect == DragDropEffects.Move)
MoveNode(destinationNode, node);
if (e.Effect == DragDropEffects.Copy)
CopyNode(destinationNode, node);
}
if (e.Effect != DragDropEffects.None)
{
//SelectNode(destinationTreeNode);
destinationTreeNode.Expand();
return;
}
}
}
// TmNode drop
if (e.Data.GetDataPresent("TmNode", false))
{
// e.Effect == none for illeagal drops.
TmNode oldNode = e.Data.GetData("TmNode") as TmNode;
Debug.Assert(oldNode != null, "Could not reserialize node from clipboard");
if (oldNode != null)
{
if (e.Effect == DragDropEffects.Move)
MoveNode(destinationNode, oldNode);
if (e.Effect == DragDropEffects.Copy)
CopyNode(destinationNode, oldNode);
if (e.Effect != DragDropEffects.None)
{
//SelectNode(destinationTreeNode);
destinationTreeNode.Expand();
return;
}
}
}
// FileDrop
if (e.Data.GetDataPresent(DataFormats.FileDrop))
{
string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
TmTreeNode newTreeNode = null;
foreach (string file in files)
{
//FIXME - determine if this is a Theme or a ThemeList
//currently assuming it is a theme.
TmNode newNode = new TmNode(TmNodeType.Theme, Path.GetFileNameWithoutExtension(file), null, new ThemeData(file), null, null, null);
try
{
// May need to load to query arc objects which could throw any number of exceptions.
newNode.ReloadTheme(false);
}
catch (Exception ex)
{
MessageBox.Show("Unable to load the theme properties" + ex);
}
if (destinationNode == null)
newTreeNode = Add(newNode);
else
destinationNode.Add(newNode);
}
if (newTreeNode != null)
SelectNode(newTreeNode);
else
{
SelectNode(destinationTreeNode);
destinationTreeNode.Expand();
}
return;
}
// Text Drop
if (e.Data.GetDataPresent(DataFormats.Text))
{
string txt = (string)e.Data.GetData(DataFormats.Text);
TmNode newNode = new TmNode(TmNodeType.Category, txt);
if (destinationNode == null)
SelectNode(Add(newNode));
else
{
destinationNode.Add(newNode);
SelectNode(destinationTreeNode);
destinationTreeNode.Expand();
}
}
}
private void PasteAsFiles()
{
TmNode currentNode = GetCurrentTmNode();
StringCollection files = Clipboard.GetFileDropList();
foreach (string file in files)
{
string basename = Path.GetFileNameWithoutExtension(file);
//assume this file is a valid theme
//FIXME - determine valid theme or themelist; reject otherwise.
TmNode newNode = new TmNode(TmNodeType.Theme, basename, null, new ThemeData(file), null, null, null);
try
{
// May need to load to query arc objects which could throw any number of exceptions.
newNode.ReloadTheme(false);
}
catch (Exception ex)
{
MessageBox.Show("Unable to load the theme properties" + ex);
}
if (currentNode == null)
Add(newNode);
else
currentNode.Add(newNode);
}
}
