Mercurial > hg > orthanc-stone
annotate Framework/Messages/IObservable.cpp @ 1059:e713f1a99861 broker
replacing MessageBroker by weak_ptr
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 11 Oct 2019 17:08:34 +0200 |
| parents | 262a0244e9b2 |
| children | af4b9cba905f |
| rev | line source |
|---|---|
| 403 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 439 | 5 * Copyright (C) 2017-2019 Osimis S.A., Belgium |
| 403 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "IObservable.h" | |
| 23 | |
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24 #include <Core/Logging.h> |
| 403 | 25 #include <Core/OrthancException.h> |
| 26 | |
| 27 #include <cassert> | |
| 28 | |
| 29 namespace OrthancStone | |
| 30 { | |
| 31 IObservable::~IObservable() | |
| 32 { | |
| 33 // delete all callables (this will also unregister them from the broker) | |
| 34 for (Callables::const_iterator it = callables_.begin(); | |
| 35 it != callables_.end(); ++it) | |
| 36 { | |
| 37 for (std::set<ICallable*>::const_iterator | |
| 38 it2 = it->second.begin(); it2 != it->second.end(); ++it2) | |
| 39 { | |
| 40 delete *it2; | |
| 41 } | |
| 42 } | |
| 43 | |
| 44 // unregister the forwarders but don't delete them (they'll be | |
| 45 // deleted by the observable they are observing as any other | |
| 46 // callable) | |
| 47 for (Forwarders::iterator it = forwarders_.begin(); | |
| 48 it != forwarders_.end(); ++it) | |
| 49 { | |
| 50 IMessageForwarder* fw = *it; | |
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51 |
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52 // TODO - What to do with forwarders? |
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53 |
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54 //broker_.Unregister(dynamic_cast<IObserver&>(*fw)); |
| 403 | 55 } |
| 56 } | |
| 57 | |
| 58 | |
| 59 void IObservable::RegisterObserverCallback(ICallable* callable) | |
| 60 { | |
| 61 if (callable == NULL) | |
| 62 { | |
| 63 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 64 } | |
| 65 | |
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66 const MessageIdentifier& id = callable->GetMessageIdentifier(); |
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67 callables_[id].insert(callable); |
| 403 | 68 } |
| 69 | |
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70 void IObservable::Unregister(IObserver *observer) |
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71 { |
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72 LOG(TRACE) << "IObservable::Unregister for IObserver at addr: " |
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73 << std::hex << observer << std::dec; |
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74 // delete all callables from this observer |
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75 for (Callables::iterator itCallableSet = callables_.begin(); |
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76 itCallableSet != callables_.end(); ++itCallableSet) |
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77 { |
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78 for (std::set<ICallable*>::const_iterator |
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79 itCallable = itCallableSet->second.begin(); itCallable != itCallableSet->second.end(); ) |
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80 { |
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81 boost::shared_ptr<IObserver> shared((*itCallable)->GetObserver()); |
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82 |
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83 if (shared && |
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84 shared.get() == observer) |
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85 { |
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86 LOG(TRACE) << " ** IObservable::Unregister : deleting callable: " |
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87 << std::hex << (*itCallable) << std::dec; |
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88 delete *itCallable; |
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89 itCallableSet->second.erase(itCallable++); |
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90 } |
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91 else |
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92 ++itCallable; |
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93 } |
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94 } |
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95 } |
| 403 | 96 |
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97 void IObservable::EmitMessageInternal(const IObserver* receiver, |
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98 const IMessage& message) |
| 403 | 99 { |
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100 LOG(TRACE) << "IObservable::EmitMessageInternal receiver = " |
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101 << std::hex << receiver << std::dec; |
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102 Callables::const_iterator found = callables_.find(message.GetIdentifier()); |
| 403 | 103 |
| 104 if (found != callables_.end()) | |
| 105 { | |
| 106 for (std::set<ICallable*>::const_iterator | |
| 107 it = found->second.begin(); it != found->second.end(); ++it) | |
| 108 { | |
| 109 assert(*it != NULL); | |
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110 |
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111 boost::shared_ptr<IObserver> observer((*it)->GetObserver()); |
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112 |
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113 if (observer) |
| 403 | 114 { |
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115 if (receiver == NULL || // Are we broadcasting? |
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116 observer.get() == receiver) // Not broadcasting, but this is the receiver |
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117 { |
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118 (*it)->Apply(message); |
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119 } |
| 403 | 120 } |
| 121 } | |
| 122 } | |
| 123 } | |
| 124 | |
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125 |
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126 void IObservable::BroadcastMessage(const IMessage& message) |
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127 { |
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128 EmitMessageInternal(NULL, message); |
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129 } |
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130 |
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131 |
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132 void IObservable::EmitMessage(const IObserver& observer, |
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133 const IMessage& message) |
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134 { |
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135 LOG(TRACE) << "IObservable::EmitMessage observer = " |
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136 << std::hex << &observer << std::dec; |
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137 EmitMessageInternal(&observer, message); |
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138 } |
| 403 | 139 |
| 140 void IObservable::RegisterForwarder(IMessageForwarder* forwarder) | |
| 141 { | |
| 142 if (forwarder == NULL) | |
| 143 { | |
| 144 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 145 } | |
| 146 | |
| 147 forwarders_.insert(forwarder); | |
| 148 } | |
| 149 } |