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Diffstat (limited to 'common/facadefactory.h')
-rw-r--r-- | common/facadefactory.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/common/facadefactory.h b/common/facadefactory.h new file mode 100644 index 0000000..4a6a698 --- /dev/null +++ b/common/facadefactory.h | |||
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1 | /* | ||
2 | * Copyright (C) 2014 Christian Mollekopf <chrigi_1@fastmail.fm> | ||
3 | * | ||
4 | * This library is free software; you can redistribute it and/or | ||
5 | * modify it under the terms of the GNU Lesser General Public | ||
6 | * License as published by the Free Software Foundation; either | ||
7 | * version 2.1 of the License, or (at your option) version 3, or any | ||
8 | * later version accepted by the membership of KDE e.V. (or its | ||
9 | * successor approved by the membership of KDE e.V.), which shall | ||
10 | * act as a proxy defined in Section 6 of version 3 of the license. | ||
11 | * | ||
12 | * This library is distributed in the hope that it will be useful, | ||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
15 | * Lesser General Public License for more details. | ||
16 | * | ||
17 | * You should have received a copy of the GNU Lesser General Public | ||
18 | * License along with this library. If not, see <http://www.gnu.org/licenses/>. | ||
19 | */ | ||
20 | |||
21 | #pragma once | ||
22 | |||
23 | #include <QByteArray> | ||
24 | #include <QDebug> | ||
25 | #include <QMutex> | ||
26 | #include <functional> | ||
27 | #include <memory> | ||
28 | |||
29 | #include "facadeinterface.h" | ||
30 | #include "domain/applicationdomaintype.h" | ||
31 | #include "log.h" | ||
32 | |||
33 | namespace Akonadi2 { | ||
34 | |||
35 | /** | ||
36 | * Facade factory that returns a store facade implementation, by loading a plugin and providing the relevant implementation. | ||
37 | * | ||
38 | * If we were to provide default implementations for certain capabilities. Here would be the place to do so. | ||
39 | */ | ||
40 | class FacadeFactory { | ||
41 | public: | ||
42 | typedef std::function<std::shared_ptr<void>(const QByteArray &)> FactoryFunction; | ||
43 | |||
44 | void registerStaticFacades(); | ||
45 | |||
46 | static FacadeFactory &instance(); | ||
47 | |||
48 | static QByteArray key(const QByteArray &resource, const QByteArray &type); | ||
49 | |||
50 | template<class DomainType, class Facade> | ||
51 | void registerFacade(const QByteArray &resource) | ||
52 | { | ||
53 | registerFacade(resource, [](const QByteArray &instanceIdentifier){ return std::make_shared<Facade>(instanceIdentifier); }, ApplicationDomain::getTypeName<DomainType>()); | ||
54 | } | ||
55 | |||
56 | /* | ||
57 | * Allows the registrar to register a specific instance. | ||
58 | * | ||
59 | * Primarily for testing. | ||
60 | */ | ||
61 | template<class DomainType, class Facade> | ||
62 | void registerFacade(const QByteArray &resource, const FactoryFunction &customFactoryFunction) | ||
63 | { | ||
64 | registerFacade(resource, customFactoryFunction, ApplicationDomain::getTypeName<DomainType>()); | ||
65 | } | ||
66 | |||
67 | /* | ||
68 | * Can be used to clear the factory. | ||
69 | * | ||
70 | * Primarily for testing. | ||
71 | */ | ||
72 | void resetFactory(); | ||
73 | |||
74 | template<class DomainType> | ||
75 | std::shared_ptr<StoreFacade<DomainType> > getFacade(const QByteArray &resource, const QByteArray &instanceIdentifier) | ||
76 | { | ||
77 | const QByteArray typeName = ApplicationDomain::getTypeName<DomainType>(); | ||
78 | return std::static_pointer_cast<StoreFacade<DomainType> >(getFacade(resource, instanceIdentifier, typeName)); | ||
79 | } | ||
80 | |||
81 | private: | ||
82 | FacadeFactory(); | ||
83 | std::shared_ptr<void> getFacade(const QByteArray &resource, const QByteArray &instanceIdentifier, const QByteArray &typeName); | ||
84 | void registerFacade(const QByteArray &resource, const FactoryFunction &customFactoryFunction, const QByteArray typeName); | ||
85 | |||
86 | QHash<QByteArray, FactoryFunction> mFacadeRegistry; | ||
87 | static QMutex sMutex; | ||
88 | }; | ||
89 | |||
90 | } | ||
91 | |||