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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 :
20 : #ifndef INCLUDED_UCBHELPER_PROVIDERHELPER_HXX
21 : #define INCLUDED_UCBHELPER_PROVIDERHELPER_HXX
22 :
23 : #include <list>
24 : #include <com/sun/star/ucb/XContentProvider.hpp>
25 : #include <com/sun/star/lang/XServiceInfo.hpp>
26 : #include <com/sun/star/lang/XMultiServiceFactory.hpp>
27 : #include <com/sun/star/lang/XTypeProvider.hpp>
28 : #include <cppuhelper/weak.hxx>
29 :
30 : #include <osl/mutex.hxx>
31 : #include <rtl/ref.hxx>
32 : #include <ucbhelper/macros.hxx>
33 : #include <ucbhelper/ucbhelperdllapi.h>
34 :
35 :
36 :
37 : namespace com { namespace sun { namespace star { namespace ucb {
38 : class XPropertySetRegistry;
39 : class XPersistentPropertySet;
40 : } } } }
41 :
42 : namespace ucbhelper_impl { struct ContentProviderImplHelper_Impl; }
43 :
44 : namespace ucbhelper {
45 :
46 :
47 :
48 : class ContentImplHelper;
49 : typedef rtl::Reference< ContentImplHelper > ContentImplHelperRef;
50 : typedef std::list< ContentImplHelperRef > ContentRefList;
51 :
52 : /**
53 : * This is an abstract base class for implementations of the service
54 : * com.sun.star.ucb.ContentProvider. It provides contents derived from
55 : * class ucb::ContentImplHelper.
56 : *
57 : * Features of the base class implementation:
58 : * - standard interfaces ( XInterface, XTypeProvider, XServiceInfo )
59 : * - maintains a set of ContentImplHelper objects, which were created by
60 : * the provider implementation. So there will be exactly one object for
61 : * one Content Identifier.
62 : * - Provides access to the Additional Core PropertySet of a content.
63 : * ( These set contains the properties added to a content using its
64 : * XPropertyContainer interface )
65 : */
66 : class UCBHELPER_DLLPUBLIC ContentProviderImplHelper : public cppu::OWeakObject,
67 : public com::sun::star::lang::XTypeProvider,
68 : public com::sun::star::lang::XServiceInfo,
69 : public com::sun::star::ucb::XContentProvider
70 : {
71 : friend class ContentImplHelper;
72 :
73 : ucbhelper_impl::ContentProviderImplHelper_Impl* m_pImpl;
74 :
75 : protected:
76 : osl::Mutex m_aMutex;
77 : ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext > m_xContext;
78 :
79 : private:
80 : UCBHELPER_DLLPRIVATE void removeContent( ContentImplHelper* pContent );
81 :
82 : UCBHELPER_DLLPRIVATE ::com::sun::star::uno::Reference<
83 : ::com::sun::star::ucb::XPropertySetRegistry >
84 : getAdditionalPropertySetRegistry();
85 :
86 : UCBHELPER_DLLPRIVATE void cleanupRegisteredContents();
87 :
88 : protected:
89 : /**
90 : * This method returns a content with the given id, if it already exists.
91 : * Use this method in your "queryContent" implementation to ensure unique
92 : * objects.
93 : *
94 : * @param Identifier is the content identifier, for that an existing
95 : * content object is requested.
96 : * @return the content with the given identifier, if it exists or 0, if it
97 : * does not exist.
98 : */
99 : rtl::Reference< ContentImplHelper >
100 : queryExistingContent( const ::com::sun::star::uno::Reference<
101 : ::com::sun::star::ucb::XContentIdentifier >& Identifier );
102 :
103 : /**
104 : * This method returns a content with the given URL, if it already exists.
105 : *
106 : * @param rURL is the URL ( content identifier string ), for that an
107 : * existing content object is requested.
108 : * @return the content with the given URL, if it exists or 0, if it
109 : * does not exist.
110 : */
111 : rtl::Reference< ContentImplHelper >
112 : queryExistingContent( const OUString& rURL );
113 :
114 : /**
115 : * This method registers a newly created content instance with the
116 : * content provider. It should be called directly after creating a new
117 : * content instance. The provider can reuse a registered instance upon
118 : * subsedent requests for content instances with an idententifier
119 : * of a registered instance.
120 : * Note that the provider does not hold a hard reference on the
121 : * registered instance. If last external reference is gone, the provider
122 : * will remove the instance from its inventory of known instances.
123 : * Nothing will happen in case an already registered instance shall
124 : * be registered more than once.
125 : *
126 : * @param the content instance that is to be registered.
127 : */
128 : void registerNewContent(
129 : const com::sun::star::uno::Reference<
130 : ::com::sun::star::ucb::XContent > & xContent );
131 :
132 : public:
133 :
134 :
135 : // Contsruction/Destruction
136 :
137 :
138 : ContentProviderImplHelper(
139 : const ::com::sun::star::uno::Reference<
140 : ::com::sun::star::uno::XComponentContext >& rxContext );
141 : virtual ~ContentProviderImplHelper();
142 :
143 :
144 : // XInterface
145 : virtual css::uno::Any SAL_CALL queryInterface( const css::uno::Type & rType )
146 : throw( css::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
147 : virtual void SAL_CALL acquire()
148 : throw() SAL_OVERRIDE;
149 : virtual void SAL_CALL release()
150 : throw() SAL_OVERRIDE;
151 :
152 : // XTypeProvider
153 :
154 :
155 : virtual com::sun::star::uno::Sequence< sal_Int8 > SAL_CALL
156 : getImplementationId()
157 : throw( com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
158 : virtual com::sun::star::uno::Sequence< com::sun::star::uno::Type > SAL_CALL
159 : getTypes()
160 : throw( com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
161 :
162 : // XServiceInfo
163 :
164 :
165 : virtual OUString SAL_CALL
166 : getImplementationName()
167 : throw( ::com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE = 0;
168 : virtual sal_Bool SAL_CALL
169 : supportsService( const OUString& ServiceName )
170 : throw( ::com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
171 : virtual ::com::sun::star::uno::Sequence< OUString > SAL_CALL
172 : getSupportedServiceNames()
173 : throw( ::com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE = 0;
174 :
175 :
176 : // XContentProvider
177 :
178 :
179 : /**
180 : * This method returns a content with the requested id.
181 : *
182 : * The implementation should:
183 : *
184 : * - Check, whether the Identifier is valid ( URL syntax ).
185 : * - Use queryExistingContent(...) to determine, whether there exists
186 : * already a content with the given id.
187 : * - Return the possibly existing content.Create and return a new
188 : * content, otherwise
189 : */
190 : virtual ::com::sun::star::uno::Reference<
191 : ::com::sun::star::ucb::XContent > SAL_CALL
192 : queryContent( const ::com::sun::star::uno::Reference<
193 : ::com::sun::star::ucb::XContentIdentifier >& Identifier )
194 : throw( ::com::sun::star::ucb::IllegalIdentifierException,
195 : ::com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE = 0;
196 : virtual sal_Int32 SAL_CALL
197 : compareContentIds( const ::com::sun::star::uno::Reference<
198 : ::com::sun::star::ucb::XContentIdentifier >& Id1,
199 : const ::com::sun::star::uno::Reference<
200 : ::com::sun::star::ucb::XContentIdentifier >& Id2 )
201 : throw( ::com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
202 :
203 :
204 : // Non-interface methods.
205 :
206 :
207 : /**
208 : * This method returns a mutex, which protects the content list of the
209 : * provider. So you can prevent modifications of that list easily.
210 : *
211 : * @return the mutex.
212 : */
213 2812 : osl::Mutex& getContentListMutex() { return m_aMutex; }
214 :
215 : /**
216 : * This method fills a list with all contents existing at calling time.
217 : * Note: You may prevent modifications of the content list at any time
218 : * by acquiring the content list mutex of the provider.
219 : *
220 : * @param rContents is the list to fill with the children.
221 : */
222 : void queryExistingContents( ContentRefList& rContents );
223 :
224 : /**
225 : * This method returns the propertyset containing the Additional Core
226 : * Properties of a content.
227 : *
228 : * @param rKey is the key for the propertyset.
229 : * @param bCreate is a flag indicating whether the propertyset shall
230 : * be created in case it does not exist.
231 : * @return the propertyset containing the Additional Core Properties.
232 : */
233 : ::com::sun::star::uno::Reference<
234 : com::sun::star::ucb::XPersistentPropertySet >
235 : getAdditionalPropertySet( const OUString& rKey, bool bCreate );
236 :
237 : /**
238 : * This method renames the propertyset containing the Additional Core
239 : * Properties of a content.
240 : *
241 : * @param rOldKey is the old key of the propertyset.
242 : * @param rNewKey is the new key for the propertyset.
243 : * @param bRecursive is a flag indicating whether propertysets for
244 : * children described by rOldKey shall be renamed, too.
245 : * @return True, if the operation succeeded - False, otherwise.
246 : */
247 : bool renameAdditionalPropertySet( const OUString& rOldKey,
248 : const OUString& rNewKey,
249 : bool bRecursive );
250 :
251 : /**
252 : * This method copies the propertyset containing the Additional Core
253 : * Properties of a content.
254 : *
255 : * @param rSourceKey is the key of the source propertyset.
256 : * @param rTargetKey is the key of the target propertyset.
257 : * @param bRecursive is a flag indicating whether propertysets for
258 : * children described by rSourceKey shall be copied, too.
259 : * @return True, if the operation succeeded - False, otherwise.
260 : */
261 : bool copyAdditionalPropertySet( const OUString& rSourceKey,
262 : const OUString& rTargetKey,
263 : bool bRecursive );
264 :
265 : /**
266 : * This method removes the propertyset containing the Additional Core
267 : * Properties of a content.
268 : *
269 : * @param rKey is the key of the propertyset.
270 : * @param bRecursive is a flag indicating whether propertysets for
271 : * children described by rOldKey shall be removed, too.
272 : * @return True, if the operation succeeded - False, otherwise.
273 : */
274 : bool removeAdditionalPropertySet( const OUString& rKey,
275 : bool bRecursive );
276 : };
277 :
278 : } // namespace ucbhelper
279 :
280 : #endif /* ! INCLUDED_UCBHELPER_PROVIDERHELPER_HXX */
281 :
282 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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