52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
////////////////////////////////////////////////////////////////////////////
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//
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// Copyright 2017 Realm Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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////////////////////////////////////////////////////////////////////////////
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#ifndef REALM_OS_NOTIFICATION_WRAPPER_HPP
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#define REALM_OS_NOTIFICATION_WRAPPER_HPP
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#include "collection_notifications.hpp"
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namespace realm {
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namespace _impl {
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// A wrapper that stores a value and an associated notification token.
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// The point of this type is to keep the notification token alive
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// until the value can be properly processed or handled.
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template<typename T>
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struct NotificationWrapper : public T {
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using T::T;
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NotificationWrapper(T&& object)
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: T(object)
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{ }
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template <typename F>
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void add_notification_callback(F&& callback)
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{
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m_token = T::add_notification_callback(std::forward<F>(callback));
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}
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private:
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NotificationToken m_token;
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};
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} // namespace _impl
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} // namespace realm
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#endif // REALM_OS_NOTIFICATION_WRAPPER_HPP
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