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annotate Framework/Messages/IObservable.h @ 393:e7a494bdd956

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removed Messages/MessageType.h
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 09 Nov 2018 18:30:30 +0100
parents b66d13708f40
children 99e31898910e
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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 "../StoneEnumerations.h"
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25 #include "ICallable.h"
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26 #include "IObserver.h"
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27 #include "MessageBroker.h"
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28 #include "MessageForwarder.h"
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30 #include <set>
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31 #include <map>
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32
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33 namespace OrthancStone
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34 {
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35 class IObservable : public boost::noncopyable
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36 {
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37 private:
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38 typedef std::map<int, std::set<ICallable*> > Callables;
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39 typedef std::set<IMessageForwarder*> Forwarders;
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40
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41 MessageBroker& broker_;
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42 Callables callables_;
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43 Forwarders forwarders_;
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44
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45 public:
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46 IObservable(MessageBroker& broker) :
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47 broker_(broker)
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48 {
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49 }
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50
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51 virtual ~IObservable()
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52 {
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53 // delete all callables (this will also unregister them from the broker)
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54 for (Callables::const_iterator it = callables_.begin();
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55 it != callables_.end(); ++it)
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56 {
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57 for (std::set<ICallable*>::const_iterator
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58 it2 = it->second.begin(); it2 != it->second.end(); ++it2)
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59 {
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60 delete *it2;
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61 }
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62 }
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63
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64 // unregister the forwarders but don't delete them (they'll be deleted by the observable they are observing as any other callable)
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65 for (Forwarders::iterator it = forwarders_.begin();
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66 it != forwarders_.end(); ++it)
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67 {
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68 IMessageForwarder* fw = *it;
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69 broker_.Unregister(dynamic_cast<IObserver&>(*fw));
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70 }
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71 }
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72
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73 void RegisterObserverCallback(ICallable* callable)
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74 {
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75 MessageType messageType = callable->GetMessageType();
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76
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77 callables_[messageType].insert(callable);
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78 }
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79
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80 void EmitMessage(const IMessage& message)
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81 {
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82 Callables::const_iterator found = callables_.find(message.GetType());
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83
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84 if (found != callables_.end())
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85 {
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86 for (std::set<ICallable*>::const_iterator
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87 it = found->second.begin(); it != found->second.end(); ++it)
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88 {
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89 if (broker_.IsActive((*it)->GetObserver()))
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90 {
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91 (*it)->Apply(message);
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92 }
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93 }
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94 }
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95 }
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96
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97 void RegisterForwarder(IMessageForwarder* forwarder)
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98 {
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99 forwarders_.insert(forwarder);
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100 }
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101
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102 MessageBroker& GetBroker() const
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103 {
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104 return broker_;
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105 }
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106 };
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107 }