Mercurial > hg > orthanc-stone

annotate Framework/Messages/IObservable.h @ 302:4a79193ffb58 am-callable-and-promise

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support for custom messages + no leaks in unit-tests
author am@osimis.io
date Tue, 18 Sep 2018 18:04:53 +0200
parents b4abaeb783b1
children b66d13708f40
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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 <set>
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25 #include <assert.h>
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26 #include <algorithm>
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27 #include <iostream>
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28 #include <map>
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31 #include "MessageBroker.h"
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32 #include "MessageType.h"
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33 #include "ICallable.h"
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34 #include "IObserver.h"
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35 #include "MessageForwarder.h"
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36
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37 namespace OrthancStone {
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38
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39
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40 class IObservable : public boost::noncopyable
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41 {
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42 protected:
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43 MessageBroker& broker_;
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44
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45 typedef std::map<int, std::set<ICallable*> > Callables;
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46 Callables callables_;
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47
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48 typedef std::set<IMessageForwarder*> Forwarders;
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49 Forwarders forwarders_;
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50
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51 public:
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52
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53 IObservable(MessageBroker& broker)
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54 : broker_(broker)
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55 {
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56 }
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57 virtual ~IObservable()
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58 {
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59 // delete all callables (this will also unregister them from the broker)
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60 for (Callables::const_iterator it = callables_.begin();
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61 it != callables_.end(); ++it)
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62 {
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63 for (std::set<ICallable*>::const_iterator
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64 it2 = it->second.begin(); it2 != it->second.end(); ++it2)
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65 {
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66 delete *it2;
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67 }
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68 }
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70 // 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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71 for (Forwarders::iterator it = forwarders_.begin();
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72 it != forwarders_.end(); ++it)
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73 {
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74 broker_.Unregister(dynamic_cast<IObserver&>(**it));
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75 }
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76 }
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77
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78 void RegisterObserverCallback(ICallable* callable)
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79 {
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80 MessageType messageType = callable->GetMessageType();
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81
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82 callables_[messageType].insert(callable);
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83 }
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84
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85 void EmitMessage(const IMessage& message)
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86 {
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87 Callables::const_iterator found = callables_.find(message.GetType());
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88
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89 if (found != callables_.end())
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90 {
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91 for (std::set<ICallable*>::const_iterator
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92 it = found->second.begin(); it != found->second.end(); ++it)
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93 {
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94 if (broker_.IsActive((*it)->GetObserver()))
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95 {
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96 (*it)->Apply(message);
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97 }
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98 }
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99 }
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100 }
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102 void RegisterForwarder(IMessageForwarder* forwarder)
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103 {
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104 forwarders_.insert(forwarder);
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105 }
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107 };
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108
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109 }