public TreeNodeDragDropEventArgs(TreeNodeDragDropDataObject data, DragEventArgs dragData, TreeNode draggedOn, TreeNode copy)
{
TreeNodeDraggedData = data;
DragData = dragData;
DraggedOnNode = draggedOn;
CopiedNode = copy;
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (e.LeftButton == MouseButtonState.Pressed)
{
if (_data == null)
{
_data = new TreeNodeDragDropDataObject(this);
}
DragDrop.DoDragDrop(this, _data, DragDropEffects.Copy | DragDropEffects.Move | DragDropEffects.None);
if (TreeNodeDragStarted != null)
{
TreeNodeDragStarted(this, new TreeNodeDragDropEventArgs(_data, e));
}
}
}
public TreeNodeDragDropEventArgs(TreeNodeDragDropDataObject data, DragEventArgs dragData, TreeNode draggedOn)
{
TreeNodeDraggedData = data;
DragData = dragData;
DraggedOnNode = draggedOn;
}
public TreeNodeDragDropEventArgs(TreeNodeDragDropDataObject data, GiveFeedbackEventArgs feedback, TreeNode draggedOn)
{
TreeNodeDraggedData = data;
FeedbackData = feedback;
DraggedOnNode = draggedOn;
}
public TreeNodeDragDropEventArgs(TreeNodeDragDropDataObject data, GiveFeedbackEventArgs feedback)
{
TreeNodeDraggedData = data;
FeedbackData = feedback;
}
public TreeNodeDragDropEventArgs(TreeNodeDragDropDataObject data, MouseEventArgs mouseData)
{
TreeNodeDraggedData = data;
MouseData = mouseData;
}
public TreeNodeDragDropEventArgs(TreeNodeDragDropDataObject data)
{
TreeNodeDraggedData = data;
}
protected override void OnDrop(DragEventArgs e)
{
base.OnDrop(e);
if (e.AllowedEffects.HasFlag(DragDropEffects.Move) || e.AllowedEffects.HasFlag(DragDropEffects.Copy))
{
if (e.Data.GetDataPresent("ICSharpCode.SharpDevelop.Services.Gui.DragDropDataObjects.TreeNodeDragDropDataObject") ||
e.Data.GetDataPresent(DataFormats.FileDrop))
{
TreeNodeDragDropDataObject draggedNodeData = (TreeNodeDragDropDataObject)e.Data.GetData("ICSharpCode.SharpDevelop.Services.Gui.DragDropDataObjects.TreeNodeDragDropDataObject");
if (e.KeyStates == DragDropKeyStates.ControlKey)
{
e.Effects = DragDropEffects.Copy;
//Make copy of the dragged node
TreeNode copiedNode = (TreeNode)draggedNodeData.DraggedNode.Clone();
//Add copied node as child of the current node
this.AddChild(copiedNode);
if (TreeNodeDropCompleted != null)
{
TreeNodeDropCompleted(this, new TreeNodeDragDropEventArgs(_data, e, this, copiedNode));
}
e.Handled = true;
}
else
{
TreeNode draggedNode = draggedNodeData.DraggedNode;
if (draggedNode != this)
{
//If item being dragged has parent then unlink it from that parent
if (draggedNode.Parent != null)
{
//Parent is an TreeNode or TreeViewItem
if (draggedNode.Parent is TreeNode)
{
TreeNode parent = draggedNode.Parent as TreeNode;
parent.Items.Remove(draggedNode);
}
//Parent is the TreeView itself
if (draggedNode.Parent is System.Windows.Controls.TreeView)
{
//Need to get TreeView instance and remove node from it
}
}
//Add dragged node as child of the current node
this.Items.Add(draggedNode);
e.Effects = DragDropEffects.Move;
if (TreeNodeDropCompleted != null)
{
TreeNodeDropCompleted(this, new TreeNodeDragDropEventArgs(_data, e, this));
}
e.Handled = true;
}
else
{
e.Effects = DragDropEffects.None;
}
}
}
else
{
e.Effects = DragDropEffects.None;
}
}
else
{
e.Effects = DragDropEffects.None;
}
}
