private void BeginDrag(MouseEventArgs e)
{
this.initialMousePosition = new Point(e.X, e.Y);
RadElement elementAtPoint = sourceComponentElementTree.GetElementAtPoint(this.initialMousePosition);
if (elementAtPoint == null)
{
return;
}
else
{
if ((elementAtPoint.Visibility != ElementVisibility.Visible))
{
return;
}
}
if (elementAtPoint is RadListElement)
{
return;
}
if (elementAtPoint is RadListVisualItem)
{
sourceListBox.SelectedItem = (elementAtPoint as RadListVisualItem).Data;
}
this.draggedItem = (elementAtPoint as RadListVisualItem).Data;
DragCancelEventArgs args = new DragCancelEventArgs(this.draggedItem, null);
if (args.Cancel)
{
this.draggedItem = null;
return;
}
RadDragEventArgs dragArgs = new RadDragEventArgs(this.draggedItem, null);
this.isRealDrag = false;
this.dragging = true;
if (this.feedBackForm == null)
{
feedBackForm = new FeedBackForm();
}
this.colorToSet = this.FeedbackFormLineColor();
this.feedBackForm.LineColor = this.colorToSet;
if (this.draggedItem != null)
{
PrepareDragging(e);
}
}
private void EndDrag(MouseEventArgs e)
{
this.dragging = false;
if (this.draggedItem != null)
{
if (targetListBox != null)
{
if (targetListBox == sourceListBox && sourceListBox.Items.Count == 1)
{
return;
}
Point p2 = new Point();
p2 = sourceListBox.PointToScreen(new Point(e.X, e.Y));
p2 = targetListBox.PointToClient(p2);
RadElement elementAtPoint = targetComponentElementTree.GetElementAtPoint(p2);
if (elementAtPoint != null)
{
if ((elementAtPoint.Visibility != ElementVisibility.Visible))
{
return;
}
//RadListVisualItem visualItem = elementAtPoint as RadListVisualItem;
//if (visualItem != null)
{
//replacedItem = visualItem.Data;
if (draggedItem == replacedItem)
{
return;
}
RefreshItemsAfterDragDrop(e);
}
}
if (this.outlineForm != null)
{
this.outlineForm.Dispose();
this.outlineForm = null;
}
if (this.feedBackForm != null)
{
this.feedBackForm.Dispose();
this.feedBackForm = null;
}
this.isRealDrag = false;
}
}
}
private void Control_MouseUp(object sender, MouseEventArgs e)
{
if (!this.dragging)
{
return;
}
if (targetListBox != null)
{
targetComponentElementTree = targetListBox.ElementTree;
if (targetComponentElementTree.RootElement.ElementTree != null && this.AllowDragDrop)
{
targetComponentElementTree.RootElement.ElementTree.Control.Capture = false;
if (e.Button == MouseButtons.Left)
{
if (this.outlineForm != null)
{
this.outlineForm.Hide();
}
if (this.feedBackForm != null)
{
this.feedBackForm.Hide();
}
EndDrag(e);
}
}
}
if (this.outlineForm != null)
{
this.outlineForm.Hide();
this.outlineForm.Dispose();
this.outlineForm = null;
this.draggedItem = null;
this.replacedItem = null;
this.dragging = false;
this.isRealDrag = false;
}
if (this.feedBackForm != null)
{
this.feedBackForm.Hide();
this.feedBackForm.Dispose();
this.feedBackForm = null;
this.dragging = false;
this.isRealDrag = false;
}
sourceListBox.FindForm().Cursor = Cursors.Arrow;
}
