Mercurial > hg > orthanc-stone
diff Framework/Messages/ICallable.h @ 299:3897f9f28cfa am-callable-and-promise
backup work in progress: updated messaging framework with ICallable
author | am@osimis.io |
---|---|
date | Fri, 14 Sep 2018 16:44:01 +0200 |
parents | |
children | b70e9be013e4 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Messages/ICallable.h Fri Sep 14 16:44:01 2018 +0200 @@ -0,0 +1,92 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2018 Osimis S.A., Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero General Public License + * as published by the Free Software Foundation, either version 3 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#pragma once + +#include "IMessage.h" + +#include <boost/noncopyable.hpp> + +namespace OrthancStone { + + class IObserver; + + // This is referencing an object and member function that can be notified + // by an IObservable. The object must derive from IO + // The member functions must be of type "void Function(const IMessage& message)" or reference a derived class of IMessage + class ICallable : public boost::noncopyable + { + public: + virtual ~ICallable() + { + } + + virtual void Apply(const IMessage& message) = 0; + + virtual MessageType GetMessageType() const = 0; + virtual IObserver* GetObserver() const = 0; + }; + + template <typename TMessage> + class MessageHandler: public ICallable + { + }; + + + template <typename TObserver, + typename TMessage> + class Callable : public MessageHandler<TMessage> + { + private: + typedef void (TObserver::* MemberFunction) (const TMessage&); + + TObserver& observer_; + MemberFunction function_; + + public: + Callable(TObserver& observer, + MemberFunction function) : + observer_(observer), + function_(function) + { + } + + void ApplyInternal(const TMessage& message) + { + (observer_.*function_) (message); + } + + virtual void Apply(const IMessage& message) + { + ApplyInternal(dynamic_cast<const TMessage&>(message)); + } + + virtual MessageType GetMessageType() const + { + return static_cast<MessageType>(TMessage::Type); + } + + virtual IObserver* GetObserver() const + { + return &observer_; + } + }; +}