public new static NSMutableDictionary FromObjectAndKey(NSObject obj, string key)
{
IntPtr handle = ObjC.ToNSString(key);
var dictionary = Runtime.GetNSObject<NSMutableDictionary>(ObjC.MessageSendIntPtr(_classHandle, Selector.GetHandle("dictionaryWithObject:forKey:"), obj.Handle, handle));
ObjC.MessageSend(handle, Selector.ReleaseHandle);
return dictionary;
}
public NSObject AddObserver(string name, Action<NSNotification> action, NSObject fromObject = null)
{
var handler = new Observer(action);
Callbacks.Subscribe(handler, SelectorName, n => action(Runtime.GetNSObject<NSNotification>(n)));
ObjC.MessageSend(Handle, Selector.GetHandle("addObserver:selector:name:object:"), handler.Handle, Selector.GetHandle(SelectorName), name, fromObject == null ? IntPtr.Zero : fromObject.Handle);
return handler;
}
public new static NSMutableDictionary FromObjectsAndKeys(NSObject[] objects, string[] keys)
{
var objectsHandle = ObjC.ToNSArray(objects);
var keysHandle = ObjC.ToNSArray(keys);
var dictionary = Runtime.GetNSObject<NSMutableDictionary>(ObjC.MessageSendIntPtr(_classHandle, Selector.GetHandle("dictionaryWithObjects:forKeys:"), objectsHandle, keysHandle));
ObjC.ReleaseNSArrayItems(keysHandle);
return dictionary;
}
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;
}
}
}
private static Methods GetMethods(NSObject obj, string selector)
{
Dictionary<IntPtr, Methods> dictionary;
if (!_callbacks.TryGetValue(obj.Handle, out dictionary))
{
_callbacks[obj.Handle] = dictionary = new Dictionary<IntPtr, Methods>();
}
IntPtr selectorHandle = ObjC.GetSelector(selector);
Methods methods;
if (!dictionary.TryGetValue(selectorHandle, out methods))
{
dictionary[selectorHandle] = methods = new Methods(obj);
}
return methods;
}
public void RemoveObserver(NSObject observer)
{
ObjC.MessageSend(Handle, Selector.GetHandle("removeObserver:"), observer.Handle);
}
public void PostNotificationName(string name, NSObject obj = null)
{
ObjC.MessageSend(Handle, Selector.GetHandle("postNotificationName:object:"), name, obj == null ? IntPtr.Zero : obj.Handle);
}
public void SetObjectForKey(NSObject obj, string key)
{
IntPtr handle = ObjC.ToNSString(key);
ObjC.MessageSendIntPtr(Handle, Selector.GetHandle("setObject:forKey:"), obj.Handle, handle);
ObjC.MessageSend(handle, Selector.ReleaseHandle);
}
public static NSNotification FromName(string name, NSObject obj = null)
{
return Runtime.GetNSObject<NSNotification>(ObjC.MessageSendIntPtr(_classHandle, Selector.GetHandle("notificationWithName:object:"), name, obj == null ? IntPtr.Zero : obj.Handle));
}
public static void UnsubscribeAll(NSObject obj)
{
_callbacks.Remove(obj.Handle);
}
public static void Unsubscribe(NSObject obj, string selector, EventHandler<ButtonEventArgs> callback)
{
var methods = GetMethods(obj, selector);
methods.EventHandlerInt -= callback;
}
public static void Unsubscribe(NSObject obj, string selector, IntPtrHandler3 callback)
{
var methods = GetMethods(obj, selector);
methods.ActionIntPtrIntPtrIntPtr -= callback;
}
public static void Unsubscribe(NSObject obj, string selector, Action callback)
{
var methods = GetMethods(obj, selector);
methods.Action -= callback;
}
public string[] KeysForObject(NSObject obj)
{
var array = Runtime.GetNSObject<NSObject>(ObjC.MessageSendIntPtr(Handle, Selector.GetHandle("allKeysForObject:"), obj.Handle));
return ObjC.FromNSArray(array.Handle);
}
public string[] KeysForObject(NSObject obj)
{
return(ObjC.FromNSArray(Runtime.GetNSObject <NSObject>(ObjC.MessageSendIntPtr(Handle, Selector.GetHandle("allKeysForObject:"), obj.Handle)).Handle));
}