/// <summary>
/// Perform the drop action associated with the target.
/// </summary>
/// <param name="screenPt">Position in screen coordinates.</param>
/// <param name="data">Data to pass to the target to process drop.</param>
/// <returns>Drop was performed and the source can perform any removal of pages as required.</returns>
public override bool PerformDrop(Point screenPt, PageDragEndData data)
{
// Find our docking edge
KryptonDockingEdge dockingEdge = null;
switch (Edge)
{
case VisualOrientation.Left:
dockingEdge = ControlElement["Left"] as KryptonDockingEdge;
break;
case VisualOrientation.Right:
dockingEdge = ControlElement["Right"] as KryptonDockingEdge;
break;
case VisualOrientation.Top:
dockingEdge = ControlElement["Top"] as KryptonDockingEdge;
break;
case VisualOrientation.Bottom:
dockingEdge = ControlElement["Bottom"] as KryptonDockingEdge;
break;
}
// Find the docked edge
KryptonDockingEdgeDocked dockedEdge = dockingEdge?["Docked"] as KryptonDockingEdgeDocked;
KryptonDockingManager manager = dockedEdge?.DockingManager;
if (manager != null)
{
// Create a list of pages that are allowed to be transferred into the dockspace
List <KryptonPage> transferPages = new List <KryptonPage>();
List <string> transferUniqueNames = new List <string>();
foreach (KryptonPage page in data.Pages)
{
if (page.AreFlagsSet(KryptonPageFlags.DockingAllowDocked))
{
// Use event to indicate the page is becoming docked and allow it to be cancelled
CancelUniqueNameEventArgs args = new CancelUniqueNameEventArgs(page.UniqueName, false);
manager?.RaisePageDockedRequest(args);
if (!args.Cancel)
{
transferPages.Add(page);
transferUniqueNames.Add(page.UniqueName);
}
}
}
// Transfer valid pages into the new dockspace
if (transferPages.Count > 0)
{
// Convert the incoming pages into store pages for restoring later
manager.PropogateAction(DockingPropogateAction.StorePages, transferUniqueNames.ToArray());
// Create a new dockspace at the start of the list so it is closest to the control edge
KryptonDockingDockspace dockspace = (_outsideEdge ? dockedEdge.InsertDockspace(0) : dockedEdge.AppendDockspace());
// Add pages into the target
dockspace.Append(transferPages.ToArray());
return(true);
}
}
return(false);
}