ucb/source/core/provprox.cxx

   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 #include <osl/diagnose.h>
  21 #include <osl/thread.h>
  22 #include <rtl/strbuf.hxx>
  23 #include <tools/diagnose_ex.h>
  24 #include "provprox.hxx"
  25 #include <com/sun/star/lang/XInitialization.hpp>
  26 #include <com/sun/star/ucb/IllegalIdentifierException.hpp>
  27 #include <cppuhelper/queryinterface.hxx>
  28 #include <ucbhelper/macros.hxx>
  29
  30 using namespace com::sun::star::lang;
  31 using namespace com::sun::star::ucb;
  32 using namespace com::sun::star::uno;
  33
  34
  35 // UcbContentProviderProxyFactory Implementation.
  36
  37
  38 UcbContentProviderProxyFactory::UcbContentProviderProxyFactory(
  39                         const Reference< XMultiServiceFactory >& rxSMgr )
  40 : m_xSMgr( rxSMgr )
  41 {
  42 }
  43
  44
  45 // virtual
  46 UcbContentProviderProxyFactory::~UcbContentProviderProxyFactory()
  47 {
  48 }
  49
  50 // XServiceInfo methods.
  51
  52 XSERVICEINFO_COMMOM_IMPL( UcbContentProviderProxyFactory,
  53                           "com.sun.star.comp.ucb.UcbContentProviderProxyFactory" )
  54 /// @throws css::uno::Exception
  55 static css::uno::Reference< css::uno::XInterface >
  56 UcbContentProviderProxyFactory_CreateInstance( const css::uno::Reference< css::lang::XMultiServiceFactory> & rSMgr )
  57 {
  58     return static_cast<css::lang::XServiceInfo*>(new UcbContentProviderProxyFactory(rSMgr));
  59 }
  60 css::uno::Sequence< OUString >
  61 UcbContentProviderProxyFactory::getSupportedServiceNames_Static()
  62 {
  63     return { "com.sun.star.ucb.ContentProviderProxyFactory" };
  64 }
  65
  66 // Service factory implementation.
  67
  68
  69 ONE_INSTANCE_SERVICE_FACTORY_IMPL( UcbContentProviderProxyFactory );
  70
  71
  72 // XContentProviderFactory methods.
  73
  74
  75 // virtual
  76 Reference< XContentProvider > SAL_CALL
  77 UcbContentProviderProxyFactory::createContentProvider(
  78                                                 const OUString& Service )
  79 {
  80     return Reference< XContentProvider >(
  81                         new UcbContentProviderProxy( m_xSMgr, Service ) );
  82 }
  83
  84
  85 // UcbContentProviderProxy Implementation.
  86
  87
  88 UcbContentProviderProxy::UcbContentProviderProxy(
  89                         const Reference< XMultiServiceFactory >& rxSMgr,
  90                         const OUString& Service )
  91 : m_aService( Service ),
  92   m_bReplace( false ),
  93   m_bRegister( false ),
  94   m_xSMgr( rxSMgr )
  95 {
  96 }
  97
  98
  99 // virtual
 100 UcbContentProviderProxy::~UcbContentProviderProxy()
 101 {
 102 }
 103
 104
 105 // XInterface methods.
 106 void SAL_CALL UcbContentProviderProxy::acquire()
 107     throw()
 108 {
 109     OWeakObject::acquire();
 110 }
 111
 112 void SAL_CALL UcbContentProviderProxy::release()
 113     throw()
 114 {
 115     OWeakObject::release();
 116 }
 117
 118 // virtual
 119 Any SAL_CALL
 120 UcbContentProviderProxy::queryInterface( const Type & rType )
 121 {
 122     Any aRet = cppu::queryInterface( rType,
 123                 static_cast< XTypeProvider * >( this ),
 124                 static_cast< XServiceInfo * >( this ),
 125                 static_cast< XContentProvider * >( this ),
 126                 static_cast< XParameterizedContentProvider * >( this ),
 127                 static_cast< XContentProviderSupplier * >( this ) );
 128
 129     if ( !aRet.hasValue() )
 130         aRet = OWeakObject::queryInterface( rType );
 131
 132     if ( !aRet.hasValue() )
 133     {
 134         // Get original provider and forward the call...
 135         osl::Guard< osl::Mutex > aGuard( m_aMutex );
 136         Reference< XContentProvider > xProvider = getContentProvider();
 137         if ( xProvider.is() )
 138             aRet = xProvider->queryInterface( rType );
 139     }
 140
 141     return aRet;
 142 }
 143
 144
 145 // XTypeProvider methods.
 146
 147
 148 XTYPEPROVIDER_COMMON_IMPL( UcbContentProviderProxy );
 149
 150
 151 Sequence< Type > SAL_CALL UcbContentProviderProxy::getTypes()
 152 {
 153     // Get original provider and forward the call...
 154     osl::Guard< osl::Mutex > aGuard( m_aMutex );
 155     Reference< XTypeProvider > xProvider( getContentProvider(), UNO_QUERY );
 156     if ( xProvider.is() )
 157     {
 158         return xProvider->getTypes();
 159     }
 160     else
 161     {
 162         static cppu::OTypeCollection s_aCollection(
 163             CPPU_TYPE_REF( XTypeProvider ),
 164             CPPU_TYPE_REF( XServiceInfo ),
 165             CPPU_TYPE_REF( XContentProvider ),
 166             CPPU_TYPE_REF( XParameterizedContentProvider ),
 167             CPPU_TYPE_REF( XContentProviderSupplier ) );
 168         return s_aCollection.getTypes();
 169     }
 170 }
 171
 172
 173 // XServiceInfo methods.
 174
 175 OUString SAL_CALL UcbContentProviderProxy::getImplementationName()
 176 {
 177     return "com.sun.star.comp.ucb.UcbContentProviderProxy";
 178 }
 179
 180 sal_Bool SAL_CALL UcbContentProviderProxy::supportsService( const OUString& ServiceName )
 181 {
 182     return cppu::supportsService( this, ServiceName );
 183 }
 184
 185 css::uno::Sequence< OUString > SAL_CALL UcbContentProviderProxy::getSupportedServiceNames()
 186 {
 187     return { "com.sun.star.ucb.ContentProviderProxy" };
 188 }
 189
 190
 191 // XContentProvider methods.
 192
 193
 194 // virtual
 195 Reference< XContent > SAL_CALL UcbContentProviderProxy::queryContent(
 196                         const Reference< XContentIdentifier >& Identifier )
 197 {
 198     // Get original provider and forward the call...
 199
 200     osl::Guard< osl::Mutex > aGuard( m_aMutex );
 201
 202     Reference< XContentProvider > xProvider = getContentProvider();
 203     if ( xProvider.is() )
 204         return xProvider->queryContent( Identifier );
 205
 206     return Reference< XContent >();
 207 }
 208
 209
 210 // virtual
 211 sal_Int32 SAL_CALL UcbContentProviderProxy::compareContentIds(
 212                        const Reference< XContentIdentifier >& Id1,
 213                        const Reference< XContentIdentifier >& Id2 )
 214 {
 215     // Get original provider and forward the call...
 216
 217     osl::Guard< osl::Mutex > aGuard( m_aMutex );
 218     Reference< XContentProvider > xProvider = getContentProvider();
 219     if ( xProvider.is() )
 220         return xProvider->compareContentIds( Id1, Id2 );
 221
 222     // OSL_FAIL( // "UcbContentProviderProxy::compareContentIds - No provider!" );
 223
 224     // @@@ What else?
 225     return 0;
 226 }
 227
 228
 229 // XParameterizedContentProvider methods.
 230
 231
 232 // virtual
 233 Reference< XContentProvider > SAL_CALL
 234 UcbContentProviderProxy::registerInstance( const OUString& Template,
 235                                              const OUString& Arguments,
 236                                              sal_Bool ReplaceExisting )
 237 {
 238     // Just remember that this method was called ( and the params ).
 239
 240     osl::Guard< osl::Mutex > aGuard( m_aMutex );
 241
 242     if ( !m_bRegister )
 243     {
 244 //      m_xTargetProvider = 0;
 245         m_aTemplate  = Template;
 246         m_aArguments = Arguments;
 247         m_bReplace   = ReplaceExisting;
 248
 249         m_bRegister  = true;
 250     }
 251     return this;
 252 }
 253
 254
 255 // virtual
 256 Reference< XContentProvider > SAL_CALL
 257 UcbContentProviderProxy::deregisterInstance( const OUString& Template,
 258                                              const OUString& Arguments )
 259 {
 260     osl::Guard< osl::Mutex > aGuard( m_aMutex );
 261
 262     // registerInstance called at proxy and at original?
 263     if ( m_bRegister && m_xTargetProvider.is() )
 264     {
 265         m_bRegister       = false;
 266         m_xTargetProvider = nullptr;
 267
 268         Reference< XParameterizedContentProvider >
 269                                 xParamProvider( m_xProvider, UNO_QUERY );
 270         if ( xParamProvider.is() )
 271         {
 272             try
 273             {
 274                 xParamProvider->deregisterInstance( Template, Arguments );
 275             }
 276             catch ( IllegalIdentifierException const & )
 277             {
 278                 OSL_FAIL( "UcbContentProviderProxy::deregisterInstance - "
 279                     "Caught IllegalIdentifierException!" );
 280             }
 281         }
 282     }
 283
 284     return this;
 285 }
 286
 287
 288 // XContentProviderSupplier methods.
 289
 290
 291 // virtual
 292 Reference< XContentProvider > SAL_CALL
 293 UcbContentProviderProxy::getContentProvider()
 294 {
 295     osl::Guard< osl::Mutex > aGuard( m_aMutex );
 296     if ( !m_xProvider.is() )
 297     {
 298         try
 299         {
 300             m_xProvider.set( m_xSMgr->createInstance( m_aService ), UNO_QUERY );
 301             if ( m_aArguments == "NoConfig" )
 302             {
 303                 Reference<XInitialization> xInit(m_xProvider,UNO_QUERY);
 304                 if(xInit.is()) {
 305                     Sequence<Any> aArgs(1);
 306                     aArgs[0] <<= m_aArguments;
 307                     xInit->initialize(aArgs);
 308                 }
 309             }
 310         }
 311         catch ( RuntimeException const & )
 312         {
 313             throw;
 314         }
 315         catch ( Exception const & )
 316         {
 317             TOOLS_INFO_EXCEPTION( "ucb.core", "Exception getting content provider");
 318         }
 319
 320         // registerInstance called at proxy, but not yet at original?
 321         if ( m_xProvider.is() && m_bRegister )
 322         {
 323             Reference< XParameterizedContentProvider >
 324                 xParamProvider( m_xProvider, UNO_QUERY );
 325             if ( xParamProvider.is() )
 326             {
 327                 try
 328                 {
 329                     m_xTargetProvider
 330                         = xParamProvider->registerInstance( m_aTemplate,
 331                                                             m_aArguments,
 332                                                             m_bReplace );
 333                 }
 334                 catch ( IllegalIdentifierException const & )
 335                 {
 336                     OSL_FAIL( "UcbContentProviderProxy::getContentProvider - "
 337                         "Caught IllegalIdentifierException!" );
 338                 }
 339
 340                 OSL_ENSURE( m_xTargetProvider.is(),
 341                     "UcbContentProviderProxy::getContentProvider - "
 342                     "No provider!" );
 343             }
 344         }
 345         if ( !m_xTargetProvider.is() )
 346             m_xTargetProvider = m_xProvider;
 347     }
 348
 349     OSL_ENSURE( m_xProvider.is(),
 350         OStringBuffer("UcbContentProviderProxy::getContentProvider - No provider for '").append(OUStringToOString(m_aService, osl_getThreadTextEncoding())).append(".").getStr() );
 351     return m_xTargetProvider;
 352 }
 353
 354 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */