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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 : #ifndef COMPHELPER_INC_COMPHELPER_COMPONENTMODULE_HXX
20 : #define COMPHELPER_INC_COMPHELPER_COMPONENTMODULE_HXX
21 :
22 : #include <comphelper/comphelperdllapi.h>
23 :
24 : #include <com/sun/star/lang/XSingleServiceFactory.hpp>
25 : #include <com/sun/star/uno/Sequence.hxx>
26 :
27 : #include <cppuhelper/factory.hxx>
28 :
29 : #include <osl/mutex.hxx>
30 :
31 : #include <rtl/string.hxx>
32 : #include <rtl/instance.hxx>
33 :
34 : //........................................................................
35 : namespace comphelper
36 : {
37 : //........................................................................
38 :
39 : /** factory factory declaration
40 : */
41 : typedef ::com::sun::star::uno::Reference< ::com::sun::star::lang::XSingleComponentFactory > (SAL_CALL *FactoryInstantiation)
42 : (
43 : ::cppu::ComponentFactoryFunc _pFactoryFunc,
44 : ::rtl::OUString const& _rComponentName,
45 : ::com::sun::star::uno::Sequence< ::rtl::OUString > const & _rServiceNames,
46 : rtl_ModuleCount* _pModuleCounter
47 : ) SAL_THROW(());
48 :
49 : //=========================================================================
50 : //= ComponentDescription
51 : //=========================================================================
52 1149 : struct COMPHELPER_DLLPUBLIC ComponentDescription
53 : {
54 : /// the implementation name of the component
55 : ::rtl::OUString sImplementationName;
56 : /// the services supported by the component implementation
57 : ::com::sun::star::uno::Sequence< ::rtl::OUString > aSupportedServices;
58 : /** the name under which the component implementation should be registered as singleton,
59 : or empty if the component does not implement a singleton.
60 : */
61 : ::rtl::OUString sSingletonName;
62 : /// the function to create an instance of the component
63 : ::cppu::ComponentFactoryFunc pComponentCreationFunc;
64 : /// the function to create a factory for the component (usually <code>::cppu::createSingleComponentFactory</code>)
65 : FactoryInstantiation pFactoryCreationFunc;
66 :
67 : ComponentDescription()
68 : :sImplementationName()
69 : ,aSupportedServices()
70 : ,sSingletonName()
71 : ,pComponentCreationFunc( NULL )
72 : ,pFactoryCreationFunc( NULL )
73 : {
74 : }
75 :
76 231 : ComponentDescription(
77 : const ::rtl::OUString& _rImplementationName,
78 : const ::com::sun::star::uno::Sequence< ::rtl::OUString >& _rSupportedServices,
79 : const ::rtl::OUString& _rSingletonName,
80 : ::cppu::ComponentFactoryFunc _pComponentCreationFunc,
81 : FactoryInstantiation _pFactoryCreationFunc
82 : )
83 : :sImplementationName( _rImplementationName )
84 : ,aSupportedServices( _rSupportedServices )
85 : ,sSingletonName( _rSingletonName )
86 : ,pComponentCreationFunc( _pComponentCreationFunc )
87 231 : ,pFactoryCreationFunc( _pFactoryCreationFunc )
88 : {
89 231 : }
90 : };
91 :
92 : //=========================================================================
93 : //= OModule
94 : //=========================================================================
95 : class OModuleImpl;
96 : class COMPHELPER_DLLPUBLIC OModule
97 : {
98 : private:
99 : oslInterlockedCount m_nClients; /// number of registered clients
100 : OModuleImpl* m_pImpl; /// impl class. lives as long as at least one client for the module is registered
101 :
102 : protected:
103 : mutable ::osl::Mutex m_aMutex; /// access safety
104 :
105 : public:
106 : OModule();
107 :
108 : virtual ~OModule();
109 :
110 : /** register a component implementing a service with the given data.
111 : @param _rImplementationName
112 : the implementation name of the component
113 : @param _rServiceNames
114 : the services the component supports
115 : @param _pCreateFunction
116 : a function for creating an instance of the component
117 : @param _pFactoryFunction
118 : a function for creating a factory for that component
119 : */
120 : void registerImplementation(
121 : const ::rtl::OUString& _rImplementationName,
122 : const ::com::sun::star::uno::Sequence< ::rtl::OUString >& _rServiceNames,
123 : ::cppu::ComponentFactoryFunc _pCreateFunction,
124 : FactoryInstantiation _pFactoryFunction = ::cppu::createSingleComponentFactory );
125 :
126 : /** registers a component given by <type>ComponentDescription</type>
127 : */
128 : void registerImplementation( const ComponentDescription& _rComp );
129 :
130 : /** creates a Factory for the component with the given implementation name.
131 : <p>Usually used from within component_getFactory.<p/>
132 : @param _pImplementationName
133 : the implementation name of the component
134 : @return
135 : the XInterface access to a factory for the component
136 : */
137 : ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > getComponentFactory(
138 : const ::rtl::OUString& _rImplementationName );
139 :
140 : /** version of getComponentFactory which directly takes the char argument you got in your component_getFactory call
141 : */
142 : void* getComponentFactory( const sal_Char* _pImplementationName );
143 :
144 : public:
145 0 : class ClientAccess { friend class OModuleClient; private: ClientAccess() { } };
146 : /// register a client for the module
147 : void registerClient( ClientAccess );
148 : /// revoke a client for the module
149 : void revokeClient( ClientAccess );
150 :
151 : protected:
152 : /** called when the first client has been registered
153 : @precond
154 : <member>m_aMutex</member> is locked
155 : */
156 : virtual void onFirstClient();
157 :
158 : /** called when the last client has been revoked
159 : @precond
160 : <member>m_aMutex</member> is locked
161 : */
162 : virtual void onLastClient();
163 :
164 : private:
165 : OModule( const OModule& ); // never implemented
166 : OModule& operator=( const OModule& ); // never implemented
167 : };
168 :
169 : //=========================================================================
170 : //= OModuleClient
171 : //=========================================================================
172 : /** base class for objects which uses any global module-specific resources
173 : */
174 : class COMPHELPER_DLLPUBLIC OModuleClient
175 : {
176 : protected:
177 : OModule& m_rModule;
178 :
179 : public:
180 0 : OModuleClient( OModule& _rModule ) :m_rModule( _rModule ) { m_rModule.registerClient( OModule::ClientAccess() ); }
181 0 : ~OModuleClient() { m_rModule.revokeClient( OModule::ClientAccess() ); }
182 : };
183 :
184 : //==========================================================================
185 : //= OAutoRegistration
186 : //==========================================================================
187 : template <class TYPE>
188 : class OAutoRegistration
189 : {
190 : public:
191 : /** automatically provides all component information to an OModule instance
192 : <p>Assumed that the template argument has the three methods
193 : <ul>
194 : <li><code>static ::rtl::OUString getImplementationName_static()</code><li/>
195 : <li><code>static ::com::sun::star::uno::Sequence< ::rtl::OUString > getSupportedServiceNames_static()</code><li/>
196 : <li><code>static ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >
197 : Create(const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >&)</code>
198 : </li>
199 : <ul/>
200 : the instantiation of this object will automatically register the class via <member>OModule::registerImplementation</member>.
201 : <p/>
202 : The factory creation function used is <code>::cppu::createSingleComponentFactory</code>.
203 : */
204 : OAutoRegistration( OModule& _rModule );
205 : };
206 :
207 : template <class TYPE>
208 193 : OAutoRegistration<TYPE>::OAutoRegistration( OModule& _rModule )
209 : {
210 193 : _rModule.registerImplementation(
211 : TYPE::getImplementationName_static(),
212 : TYPE::getSupportedServiceNames_static(),
213 : TYPE::Create
214 : );
215 193 : }
216 :
217 : //==========================================================================
218 : //= OSingletonRegistration
219 : //==========================================================================
220 : template <class TYPE>
221 : class OSingletonRegistration
222 : {
223 : public:
224 : /** automatically provides all component information to an OModule instance,
225 : for a singleton component
226 :
227 : <p>Assumed that the template argument has the three methods
228 : <ul>
229 : <li><code>static ::rtl::OUString getImplementationName_static()</code><li/>
230 : <li><code>static ::com::sun::star::uno::Sequence< ::rtl::OUString > getSupportedServiceNames_static()</code><li/>
231 : <li><code>static ::rtl::OUString getSingletonName_static()</code></li>
232 : <li><code>static ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >
233 : Create(const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >&)</code>
234 : </li>
235 : <ul/>
236 : the instantiation of this object will automatically register the class via <member>OModule::registerImplementation</member>.
237 : </p>
238 : */
239 : OSingletonRegistration( OModule& _rModule );
240 : };
241 :
242 : template <class TYPE>
243 : //--------------------------------------------------------------------------
244 45 : OSingletonRegistration<TYPE>::OSingletonRegistration( OModule& _rModule )
245 : {
246 45 : _rModule.registerImplementation( ComponentDescription(
247 : TYPE::getImplementationName_static(),
248 : TYPE::getSupportedServiceNames_static(),
249 : TYPE::getSingletonName_static(),
250 : &TYPE::Create,
251 : &::cppu::createSingleComponentFactory
252 : ) );
253 45 : }
254 :
255 : //........................................................................
256 : } // namespace comphelper
257 : //........................................................................
258 :
259 : #endif // COMPHELPER_INC_COMPHELPER_COMPONENTMODULE_HXX
260 :
261 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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