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