Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Messages/ICallable.h @ 1812:db341679dc9f
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 25 May 2021 12:32:11 +0200 |
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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) 2017-2021 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 Lesser 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 * Lesser 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 Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
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20 **/ |
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21 |
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22 |
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23 #pragma once |
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24 |
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25 #include "IMessage.h" |
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26 #include "IObserver.h" |
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27 |
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28 #include <Logging.h> |
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29 |
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30 #include <boost/noncopyable.hpp> |
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31 #include <boost/weak_ptr.hpp> |
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32 |
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33 #include <string> |
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35 |
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36 namespace OrthancStone |
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37 { |
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38 // This is referencing an object and member function that can be notified |
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39 // by an IObservable. The object must derive from IO |
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40 // The member functions must be of type "void Method(const IMessage& message)" or reference a derived class of IMessage |
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41 class ICallable : public boost::noncopyable |
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42 { |
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43 public: |
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44 virtual ~ICallable() |
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45 { |
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46 } |
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47 |
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48 virtual void Apply(const IMessage& message) = 0; |
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49 |
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50 virtual const MessageIdentifier& GetMessageIdentifier() = 0; |
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51 |
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52 // TODO - Is this needed? |
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53 virtual boost::weak_ptr<IObserver> GetObserver() const = 0; |
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54 }; |
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55 |
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56 |
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57 template <typename TObserver, |
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58 typename TMessage> |
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59 class Callable : public ICallable |
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60 { |
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61 private: |
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62 typedef void (TObserver::* MemberMethod) (const TMessage&); |
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63 |
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64 boost::weak_ptr<IObserver> observer_; |
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65 MemberMethod function_; |
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66 |
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67 public: |
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68 Callable(boost::shared_ptr<TObserver> observer, |
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69 MemberMethod function) : |
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70 observer_(observer), |
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71 function_(function) |
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72 { |
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73 } |
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74 |
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75 virtual void Apply(const IMessage& message) |
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76 { |
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77 boost::shared_ptr<IObserver> lock(observer_); |
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78 if (lock) |
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79 { |
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80 TObserver& observer = dynamic_cast<TObserver&>(*lock); |
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81 const TMessage& typedMessage = dynamic_cast<const TMessage&>(message); |
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82 (observer.*function_) (typedMessage); |
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83 } |
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84 } |
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85 |
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86 virtual const MessageIdentifier& GetMessageIdentifier() |
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87 { |
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88 return TMessage::GetStaticIdentifier(); |
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89 } |
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90 |
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91 virtual boost::weak_ptr<IObserver> GetObserver() const |
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92 { |
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93 return observer_; |
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94 } |
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95 }; |
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96 } |