partial void btnCreateCar(Foundation.NSObject sender)
{
NSWindow w = tableView.Window;
// try to end any editing that is taking place
bool editingEnded = w.MakeFirstResponder(w);
if (!editingEnded) {
Console.WriteLine("Unable to end editing");
return;
}
NSUndoManager undo = this.UndoManager;
// Has an edit occurred already in this event?
if (undo.GroupingLevel > 0) {
// Close the last group
undo.EndUndoGrouping();
// Open a new group
undo.BeginUndoGrouping();
}
// Create the object
// Should be able to do arrayController.NewObject, but it returns an NSObjectController
// not an NSObject and also causes an InvalidCastException
// BUG: https://bugzilla.xamarin.com/show_bug.cgi?id=25620
// var c = arrayController.NewObject;
// Workaround - not available in Unified API... due to protection level.
// Car c = (Car)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSend(arrayController.Handle, Selector.GetHandle ("newObject")));
// Plus I can't figure out how to get the Car object from NSObjectController. Ah, this is due to above bug.
// Creating my own Person object instead
Car c = new Car();
// Add it to the content array of arrayController
arrayController.AddObject(c);
// Re-sort (in case the user has sorted a column)
arrayController.RearrangeObjects();
// Get the sorted array
NSArray a = NSArray.FromNSObjects(arrayController.ArrangedObjects());
// Find the object just added
nint row = -1;
for (nuint i = 0; i < a.Count; i++) {
if (c == a.GetItem<Car>(i)) {
row = (nint)i;
break;
}
}
Console.WriteLine("Starting edit of {0} in row {1}", c, row);
// Begin the edit of the first column
tableView.EditColumn(0, row, null, true);
}
public void StartObservingCar(Car car)
{
car.AddObserver(this, new NSString("makeModel"), NSKeyValueObservingOptions.Old, this.Handle);
car.AddObserver(this, new NSString("datePurchased"), NSKeyValueObservingOptions.Old, this.Handle);
car.AddObserver(this, new NSString("condition"), NSKeyValueObservingOptions.Old, this.Handle);
car.AddObserver(this, new NSString("onSpecial"), NSKeyValueObservingOptions.Old, this.Handle);
car.AddObserver(this, new NSString("price"), NSKeyValueObservingOptions.Old, this.Handle);
car.AddObserver(this, new NSString("photo"), NSKeyValueObservingOptions.Old, this.Handle);
}
public void StopObservingCar(Car car)
{
car.RemoveObserver(this, new NSString("makeModel"));
car.RemoveObserver(this, new NSString("datePurchased"));
car.RemoveObserver(this, new NSString("condition"));
car.RemoveObserver(this, new NSString("onSpecial"));
car.RemoveObserver(this, new NSString("price"));
car.RemoveObserver(this, new NSString("photo"));
}
public void InsertObjectInCarsAtIndex(Car c, int index)
{
NSUndoManager undo = this.UndoManager;
Console.WriteLine("Adding {0} to {1}", c, Cars);
// Add the inverse of this operation to the undo stack
NSArray args = NSArray.FromObjects(new object[]{c, new NSNumber(index)});
undo.RegisterUndoWithTarget(this, new Selector("undoAdd:"), args);
if (!undo.IsUndoing) {
undo.SetActionname("Add Car");
}
// Add the car to the array
this.StartObservingCar(c);
Cars.Insert(c, index);
}