internal bool DoDragDrop(Gdk.DragContext context, int x, int y, uint time)
{
DragDropInfo.LastDragPosition = new Point (x, y);
var cda = ConvertDragAction (context.GetSelectedAction());
DragDropResult res;
if ((enabledEvents & WidgetEvent.DragDropCheck) == 0) {
if ((enabledEvents & WidgetEvent.DragDrop) != 0)
res = DragDropResult.None;
else
res = DragDropResult.Canceled;
}
else {
DragCheckEventArgs da = new DragCheckEventArgs (new Point (x, y), Util.GetDragTypes (context.ListTargets ()), cda);
ApplicationContext.InvokeUserCode (delegate {
EventSink.OnDragDropCheck (da);
});
res = da.Result;
if ((enabledEvents & WidgetEvent.DragDrop) == 0 && res == DragDropResult.None)
res = DragDropResult.Canceled;
}
if (res == DragDropResult.Canceled) {
Gtk.Drag.Finish (context, false, false, time);
return true;
}
else if (res == DragDropResult.Success) {
Gtk.Drag.Finish (context, true, cda == DragDropAction.Move, time);
return true;
}
else {
// Undefined, we need more data
QueryDragData (context, time, false);
return true;
}
}
internal bool DoDragDataReceived(Gdk.DragContext context, int x, int y, Gtk.SelectionData selectionData, uint info, uint time)
{
if (DragDropInfo.DragDataRequests == 0) {
// Got the data without requesting it. Create the datastore here
DragDropInfo.DragData = new TransferDataStore ();
DragDropInfo.LastDragPosition = new Point (x, y);
DragDropInfo.DragDataRequests = 1;
}
DragDropInfo.DragDataRequests--;
// If multiple drag/drop data types are supported, we need to iterate through them all and
// append the data. If one of the supported data types is not found, there's no need to
// bail out. We must raise the event
Util.GetSelectionData (ApplicationContext, selectionData, DragDropInfo.DragData);
if (DragDropInfo.DragDataRequests == 0) {
if (DragDropInfo.DragDataForMotion) {
// If no specific action is set, it means that no key has been pressed.
// In that case, use Move or Copy or Link as default (when allowed, in this order).
var cact = ConvertDragAction (context.Actions);
if (cact != DragDropAction.Copy && cact != DragDropAction.Move && cact != DragDropAction.Link) {
if (cact.HasFlag (DragDropAction.Move))
cact = DragDropAction.Move;
else if (cact.HasFlag (DragDropAction.Copy))
cact = DragDropAction.Copy;
else if (cact.HasFlag (DragDropAction.Link))
cact = DragDropAction.Link;
else
cact = DragDropAction.None;
}
DragOverEventArgs da = new DragOverEventArgs (DragDropInfo.LastDragPosition, DragDropInfo.DragData, cact);
ApplicationContext.InvokeUserCode (delegate {
EventSink.OnDragOver (da);
});
OnSetDragStatus (context, (int)DragDropInfo.LastDragPosition.X, (int)DragDropInfo.LastDragPosition.Y, time, ConvertDragAction (da.AllowedAction));
return true;
}
else {
// Use Context.Action here since that's the action selected in DragOver
var cda = ConvertDragAction (context.GetSelectedAction());
DragEventArgs da = new DragEventArgs (DragDropInfo.LastDragPosition, DragDropInfo.DragData, cda);
ApplicationContext.InvokeUserCode (delegate {
EventSink.OnDragDrop (da);
});
Gtk.Drag.Finish (context, da.Success, cda == DragDropAction.Move, time);
return true;
}
} else
return false;
}
