public override bool WriteRows(NSTableView tableView, NSIndexSet rowIndexes, NSPasteboard pboard)
{
var h = Handler;
if (h == null)
{
return(false);
}
if (h.IsMouseDragging)
{
h.DragInfo = null;
// give MouseMove event a chance to start the drag
h.DragPasteboard = pboard;
// check if the dragged rows are different than the selection so we can fire a changed event
var dragRows = rowIndexes.Select(r => (int)r).ToList();
bool isDifferentSelection = (nint)dragRows.Count != h.Control.SelectedRowCount;
if (!isDifferentSelection)
{
// same count, ensure they're not different rows
// typically only tests one entry here, as there's no way to drag more than a single non-selected item.
var selectedRows = h.Control.SelectedRows.ToArray();
for (var i = 0; i < selectedRows.Length; i++)
{
if (!dragRows.Contains((int)selectedRows[i]))
{
isDifferentSelection = true;
break;
}
}
}
if (isDifferentSelection)
{
h.CustomSelectedRows = dragRows;
h.Callback.OnSelectionChanged(h.Widget, EventArgs.Empty);
}
var args = MacConversions.GetMouseEvent(h, NSApplication.SharedApplication.CurrentEvent, false);
h.Callback.OnMouseMove(h.Widget, args);
h.DragPasteboard = null;
return(h.DragInfo != null);
}
return(false);
}
public override NSIndexSet GetSelectionIndexes(NSTableView tableView, NSIndexSet proposedSelectionIndexes)
{
if (updating)
{
return(proposedSelectionIndexes);
}
Notify(() =>
{
owner.OnSelect?.Invoke(
proposedSelectionIndexes
.Select(row => dataSource.items[(int)row])
.ToArray()
);
});
return(proposedSelectionIndexes);
}
public override NSIndexSet GetSelectionIndexes(NSOutlineView outlineView, NSIndexSet proposedSelectionIndexes)
{
if (updating)
{
return(proposedSelectionIndexes);
}
Notify(() =>
{
owner.OnSelect?.Invoke(
proposedSelectionIndexes
.Select(row => outlineView.ItemAtRow((nint)row))
.OfType <NSNodeItem>()
.Select(n => n.ModelNode)
.ToArray()
);
});
return(proposedSelectionIndexes);
}
public override bool WriteRows(NSTableView tableView, NSIndexSet rowIndexes, NSPasteboard pboard)
{
var h = Handler;
if (h == null)
{
return(false);
}
if (h.IsMouseDragging)
{
h.Control.AllowedOperation = null;
// give MouseMove event a chance to start the drag
h.DragPasteboard = pboard;
h.CustomSelectedRows = rowIndexes.Select(r => (int)r).ToList();
var args = MacConversions.GetMouseEvent(h.ContainerControl, NSApplication.SharedApplication.CurrentEvent, false);
h.Callback.OnMouseMove(h.Widget, args);
h.DragPasteboard = null;
h.CustomSelectedRows = null;
return(h.Control.AllowedOperation != null);
}
return(false);
}