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annotate Framework/Messages/MessageForwarder.h @ 300:b4abaeb783b1 am-callable-and-promise

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messaging refactoring almost complete: works fine in native
author am@osimis.io
date Tue, 18 Sep 2018 15:23:21 +0200
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children 4a79193ffb58
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300
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #pragma once
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23
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24 #include "ICallable.h"
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25 #include "IObservable.h"
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26 #include "IObserver.h"
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27
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28 #include <boost/noncopyable.hpp>
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29
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30 namespace OrthancStone {
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31
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32
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33 template<typename TMessage>
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34 class MessageForwarder : public IObserver, public Callable<MessageForwarder<TMessage>, TMessage>
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35 {
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36 IObservable& observable_;
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37 public:
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38 MessageForwarder(MessageBroker& broker,
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39 IObservable& observable // the object that will emit the forwarded message
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40 )
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41 : IObserver(broker),
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42 Callable<MessageForwarder<TMessage>, TMessage>(*this, &MessageForwarder::ForwardMessage),
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43 observable_(observable)
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44 {
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45 }
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46
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47 protected:
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48 void ForwardMessage(const TMessage& message)
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49 {
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50 observable_.EmitMessage(message);
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51 }
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52 };
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53 }