public override nfloat GetPreferredWidth(object value, CGSize cellSize, int row, object dataItem)
{
var column = -1; // TODO: lookup!
var args = new MutableCellEventArgs(ColumnHandler?.DataViewHandler as Grid, Widget, row, column, dataItem, CellStates.None, null);
var identifier = Callback.OnGetIdentifier(Widget, args) ?? string.Empty;
Control widthCell;
if (!widthCells.TryGetValue(identifier, out widthCell))
{
widthCell = Callback.OnCreateCell(Widget, args);
if (widthCell == null)
{
return(Callback.OnGetPreferredWidth(Widget, args));
}
widthCell.AttachNative();
widthCells.Add(identifier, widthCell);
}
args.SetControl(widthCell);
Callback.OnConfigureCell(Widget, args, widthCell);
widthCell.GetMacControl()?.InvalidateMeasure();
var result = widthCell.GetPreferredSize(SizeF.PositiveInfinity).Width;
widthCell.DataContext = null;
return(result);
//return Callback.OnGetPreferredWidth(Widget, new CellEventArgs(row, dataItem, CellStates.None));
}
public override NSView GetViewForItem(NSTableView tableView, NSTableColumn tableColumn, int row, NSObject obj, Func <NSObject, int, object> getItem)
{
var item = getItem(obj, row);
var state = CellStates.None;
if (tableView.IsRowSelected(row))
{
state |= CellStates.Selected;
}
if (tableColumn.Editable)
{
state |= CellStates.Editing;
}
var column = -1; // TODO: get index or lookup when needed.
var args = new MutableCellEventArgs(ColumnHandler.DataViewHandler as Grid, Widget, row, column, item, state, null);
var identifier = tableColumn.Identifier;
var id = Callback.OnGetIdentifier(Widget, args);
if (!string.IsNullOrEmpty(id))
{
identifier += "_" + id;
}
var view = tableView.MakeView(identifier, tableView) as EtoCustomCellView;
if (view == null)
{
var control = Callback.OnCreateCell(Widget, args);
args.SetControl(control);
view = new EtoCustomCellView
{
Handler = this,
Args = args,
EtoControl = control,
Identifier = identifier,
AutoresizingMask = NSViewResizingMask.HeightSizable | NSViewResizingMask.WidthSizable
};
if (control != null)
{
var childView = control.ToNative(true);
view.AddSubview(childView);
view.Setup();
}
}
else
{
view.Args.SetEditable(args.IsEditing);
view.Args.SetSelected(args.IsSelected);
view.Args.SetItem(args.Item);
}
var formatArgs = new MacCellFormatArgs(ColumnHandler.Widget, item, row, view);
ColumnHandler.DataViewHandler.OnCellFormatting(formatArgs);
Callback.OnConfigureCell(Widget, view.Args, view.EtoControl);
return(view);
}
