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//-------------------------------------------------------------------------------------------------------------------------------------------------------------
//
// Foundation/NSNotification.hpp
//
// Copyright 2020-2023 Apple Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
#pragma once
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
#include "NSDefines.hpp"
#include "NSDictionary.hpp"
#include "NSObject.hpp"
#include "NSString.hpp"
#include "NSTypes.hpp"
#include <functional>
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
namespace NS
{
using NotificationName = class String*;
class Notification : public NS::Referencing<Notification>
{
public:
NS::String* name() const;
NS::Object* object() const;
NS::Dictionary* userInfo() const;
};
using ObserverBlock = void(^)(Notification*);
using ObserverFunction = std::function<void(Notification*)>;
class NotificationCenter : public NS::Referencing<NotificationCenter>
{
public:
static class NotificationCenter* defaultCenter();
Object* addObserver(NotificationName name, Object* pObj, void* pQueue, ObserverBlock block);
Object* addObserver(NotificationName name, Object* pObj, void* pQueue, ObserverFunction &handler);
void removeObserver(Object* pObserver);
};
}
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
_NS_INLINE NS::String* NS::Notification::name() const
{
return Object::sendMessage<NS::String*>(this, _NS_PRIVATE_SEL(name));
}
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
_NS_INLINE NS::Object* NS::Notification::object() const
{
return Object::sendMessage<NS::Object*>(this, _NS_PRIVATE_SEL(object));
}
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
_NS_INLINE NS::Dictionary* NS::Notification::userInfo() const
{
return Object::sendMessage<NS::Dictionary*>(this, _NS_PRIVATE_SEL(userInfo));
}
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
_NS_INLINE NS::NotificationCenter* NS::NotificationCenter::defaultCenter()
{
return NS::Object::sendMessage<NS::NotificationCenter*>(_NS_PRIVATE_CLS(NSNotificationCenter), _NS_PRIVATE_SEL(defaultCenter));
}
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
_NS_INLINE NS::Object* NS::NotificationCenter::addObserver(NS::NotificationName name, Object* pObj, void* pQueue, NS::ObserverBlock block)
{
return NS::Object::sendMessage<Object*>(this, _NS_PRIVATE_SEL(addObserverName_object_queue_block_), name, pObj, pQueue, block);
}
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
_NS_INLINE NS::Object* NS::NotificationCenter::addObserver(NS::NotificationName name, Object* pObj, void* pQueue, NS::ObserverFunction &handler)
{
__block ObserverFunction blockFunction = handler;
return addObserver(name, pObj, pQueue, ^(NS::Notification* pNotif) {blockFunction(pNotif);});
}
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
_NS_INLINE void NS::NotificationCenter::removeObserver(Object* pObserver)
{
return NS::Object::sendMessage<void>(this, _NS_PRIVATE_SEL(removeObserver_), pObserver);
}
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