ucbhelper/source/provider/registerucb.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.
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   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 <ucbhelper/registerucb.hxx>
  21 #include <com/sun/star/beans/XPropertySet.hpp>
  22 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
  23 #include <com/sun/star/ucb/XContentProviderManager.hpp>
  24 #include <com/sun/star/ucb/XParameterizedContentProvider.hpp>
  25 #include <com/sun/star/ucb/ContentProviderProxyFactory.hpp>
  26 #include <com/sun/star/ucb/XContentProviderFactory.hpp>
  27 #include <com/sun/star/uno/XComponentContext.hpp>
  28 #include <com/sun/star/uno/RuntimeException.hpp>
  29
  30 #include "osl/diagnose.h"
  31
  32 using namespace com::sun::star;
  33
  34 namespace ucbhelper {
  35
  36 //============================================================================
  37 //
  38 //  registerAtUcb
  39 //
  40 //============================================================================
  41
  42 bool
  43 registerAtUcb(
  44     uno::Reference< ucb::XContentProviderManager > const & rManager,
  45     uno::Reference< lang::XMultiServiceFactory > const & rServiceFactory,
  46     OUString const & rName,
  47     OUString const & rArguments,
  48     OUString const & rTemplate,
  49     ContentProviderRegistrationInfo * pInfo)
  50     throw (uno::RuntimeException)
  51 {
  52     OSL_ENSURE(rServiceFactory.is(),
  53                "ucb::registerAtUcb(): No service factory");
  54
  55     bool bNoProxy = rArguments.startsWith("{noproxy}");
  56     OUString
  57         aProviderArguments(bNoProxy ?
  58                                rArguments.
  59                                    copy(RTL_CONSTASCII_LENGTH("{noproxy}")) :
  60                                rArguments);
  61
  62     // First, try to instantiate proxy for provider:
  63     uno::Reference< ucb::XContentProvider > xProvider;
  64     if (!bNoProxy)
  65     {
  66         uno::Reference< ucb::XContentProviderFactory > xProxyFactory;
  67         try
  68         {
  69             uno::Reference< beans::XPropertySet > xFactoryProperties( rServiceFactory, uno::UNO_QUERY_THROW );
  70             uno::Reference< uno::XComponentContext > xContext = uno::Reference< uno::XComponentContext >(
  71                 xFactoryProperties->getPropertyValue( OUString( "DefaultContext" ) ),
  72                 uno::UNO_QUERY );
  73             xProxyFactory
  74                 = uno::Reference< ucb::XContentProviderFactory >(
  75                       ucb::ContentProviderProxyFactory::create( xContext ) );
  76         }
  77         catch (uno::Exception const &) {}
  78         OSL_ENSURE(xProxyFactory.is(), "No ContentProviderProxyFactory");
  79         if (xProxyFactory.is())
  80             xProvider = xProxyFactory->createContentProvider(rName);
  81     }
  82
  83     // Then, try to instantiate provider directly:
  84     if (!xProvider.is())
  85         try
  86         {
  87             xProvider = uno::Reference< ucb::XContentProvider >(
  88                             rServiceFactory->createInstance(rName),
  89                             uno::UNO_QUERY);
  90         }
  91         catch (uno::RuntimeException const &) { throw; }
  92         catch (uno::Exception const &) {}
  93
  94     uno::Reference< ucb::XContentProvider >
  95         xOriginalProvider(xProvider);
  96     uno::Reference< ucb::XParameterizedContentProvider >
  97         xParameterized(xProvider, uno::UNO_QUERY);
  98     if (xParameterized.is())
  99     {
 100         uno::Reference< ucb::XContentProvider > xInstance;
 101         try
 102         {
 103             xInstance = xParameterized->registerInstance(rTemplate,
 104                                                          aProviderArguments,
 105                                                          true);
 106                 //@@@ if this call replaces an old instance, the commit-or-
 107                 // rollback code below will not work
 108         }
 109         catch (lang::IllegalArgumentException const &) {}
 110
 111         if (xInstance.is())
 112             xProvider = xInstance;
 113     }
 114
 115     bool bSuccess = false;
 116     if (rManager.is() && xProvider.is())
 117     {
 118         try
 119         {
 120             rManager->registerContentProvider(xProvider, rTemplate, true);
 121             bSuccess = true;
 122         }
 123         catch (ucb::DuplicateProviderException const &)
 124         {
 125             if (xParameterized.is())
 126                 try
 127                 {
 128                     xParameterized->deregisterInstance(rTemplate,
 129                                                        aProviderArguments);
 130                 }
 131                 catch (lang::IllegalArgumentException const &) {}
 132         }
 133         catch (...)
 134         {
 135             if (xParameterized.is())
 136                 try
 137                 {
 138                     xParameterized->deregisterInstance(rTemplate,
 139                                                        aProviderArguments);
 140                 }
 141                 catch (lang::IllegalArgumentException const &) {}
 142                 catch (uno::RuntimeException const &) {}
 143             throw;
 144         }
 145     }
 146     if (bSuccess && pInfo)
 147     {
 148         pInfo->m_xProvider = xOriginalProvider;
 149         pInfo->m_aArguments = aProviderArguments;
 150         pInfo->m_aTemplate = rTemplate;
 151     }
 152     return bSuccess;
 153 }
 154
 155 }
 156
 157 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */