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comparison OrthancStone/Sources/Messages/ObserverBase.h @ 1512:244ad1e4e76a

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reorganization of folders
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 07 Jul 2020 16:21:02 +0200
parents Framework/Messages/ObserverBase.h@30deba7bc8e2
children 8563ea5d8ae4
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1511:9dfeee74c1e6 1512:244ad1e4e76a
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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 #pragma once
23
24 #include "ICallable.h"
25 #include "IObserver.h"
26 #include "IObservable.h"
27
28 #include <OrthancException.h>
29
30 #include <boost/enable_shared_from_this.hpp>
31
32 namespace OrthancStone
33 {
34 template <typename TObserver>
35 class ObserverBase :
36 public IObserver,
37 public boost::enable_shared_from_this<TObserver>
38 {
39 public:
40 boost::shared_ptr<TObserver> GetSharedObserver()
41 {
42 try
43 {
44 return this->shared_from_this();
45 }
46 catch (boost::bad_weak_ptr&)
47 {
48 throw Orthanc::OrthancException(
49 Orthanc::ErrorCode_InternalError,
50 "Cannot get a shared pointer to an observer from its constructor, "
51 "or the observer is not created as a shared pointer");
52 }
53 }
54
55 template <typename TMessage>
56 ICallable* CreateCallable(void (TObserver::* MemberMethod) (const TMessage&))
57 {
58 return new Callable<TObserver, TMessage>(GetSharedObserver(), MemberMethod);
59 }
60
61 template <typename TMessage>
62 void Register(IObservable& observable,
63 void (TObserver::* MemberMethod) (const TMessage&))
64 {
65 observable.RegisterCallable(CreateCallable(MemberMethod));
66 }
67 };
68 }