public static void Subscribe(NSObject obj, string selector, EventHandler callback)
{
var methods = GetMethods(obj, selector);
methods.EventHandler += callback;
if (!_delegates.ContainsKey(selector))
{
IntPtrHandler3 del = OnCallback;
if (!ObjC.AddMethod(obj.ClassHandle, Selector.GetHandle(selector), del, "v@:@"))
{
throw new InvalidOperationException("AddMethod failed for selector " + selector);
}
else
{
_delegates[selector] = del;
}
}
}
public static void Unsubscribe(NSObject obj, string selector, IntPtrHandler3 callback)
{
Methods methods = GetMethods(obj, selector);
methods.ActionIntPtrIntPtrIntPtr = (IntPtrHandler3)Delegate.Remove(methods.ActionIntPtrIntPtrIntPtr, callback);
}
public static void Unsubscribe(NSObject obj, string selector, IntPtrHandler3 callback)
{
var methods = GetMethods(obj, selector);
methods.ActionIntPtrIntPtrIntPtr -= callback;
}
public static void Subscribe(NSObject obj, string selector, IntPtrHandler3 callback)
{
var methods = GetMethods(obj, selector);
methods.ActionIntPtrIntPtrIntPtr += callback;
if (!_delegates.ContainsKey(selector))
{
IntPtrHandler5 del = OnCallbackIntPtrIntPtrIntPtr;
if (!ObjC.AddMethod(obj.ClassHandle, Selector.GetHandle(selector), del, "v@:@@@"))
{
throw new InvalidOperationException("AddMethod failed for selector " + selector);
}
else
{
_delegates[selector] = del;
}
}
}
public static void Unsubscribe(NSObject obj, string selector, IntPtrHandler3 callback)
{
var methods = GetMethods(obj, selector);
methods.ActionIntPtrIntPtrIntPtr -= callback;
}
