comphelper/source/misc/stillreadwriteinteraction.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 <comphelper/stillreadwriteinteraction.hxx>
  21
  22 #include <com/sun/star/ucb/InteractiveIOException.hpp>
  23
  24 #include <com/sun/star/task/XInteractionAbort.hpp>
  25
  26 #include <com/sun/star/ucb/UnsupportedDataSinkException.hpp>
  27
  28 namespace comphelper{
  29
  30 StillReadWriteInteraction::StillReadWriteInteraction(const css::uno::Reference< css::task::XInteractionHandler >& xHandler)
  31              : m_bUsed                    (false)
  32              , m_bHandledByMySelf         (false)
  33              , m_bHandledByInternalHandler(false)
  34 {
  35     ::std::vector< ::ucbhelper::InterceptedInteraction::InterceptedRequest > lInterceptions;
  36     ::ucbhelper::InterceptedInteraction::InterceptedRequest                  aInterceptedRequest;
  37
  38     aInterceptedRequest.Handle = HANDLE_INTERACTIVEIOEXCEPTION;
  39     aInterceptedRequest.Request <<= css::ucb::InteractiveIOException();
  40     aInterceptedRequest.Continuation = cppu::UnoType<css::task::XInteractionAbort>::get();
  41     aInterceptedRequest.MatchExact = false;
  42     lInterceptions.push_back(aInterceptedRequest);
  43
  44     aInterceptedRequest.Handle = HANDLE_UNSUPPORTEDDATASINKEXCEPTION;
  45     aInterceptedRequest.Request <<= css::ucb::UnsupportedDataSinkException();
  46     aInterceptedRequest.Continuation = cppu::UnoType<css::task::XInteractionAbort>::get();
  47     aInterceptedRequest.MatchExact = false;
  48     lInterceptions.push_back(aInterceptedRequest);
  49
  50     setInterceptedHandler(xHandler);
  51     setInterceptions(lInterceptions);
  52 }
  53
  54 void StillReadWriteInteraction::resetInterceptions()
  55 {
  56     setInterceptions(::std::vector< ::ucbhelper::InterceptedInteraction::InterceptedRequest >());
  57 }
  58
  59 void StillReadWriteInteraction::resetErrorStates()
  60 {
  61     m_bUsed                     = false;
  62     m_bHandledByMySelf          = false;
  63     m_bHandledByInternalHandler = false;
  64 }
  65
  66 bool StillReadWriteInteraction::wasWriteError()
  67 {
  68     return (m_bUsed && m_bHandledByMySelf);
  69 }
  70
  71 ucbhelper::InterceptedInteraction::EInterceptionState StillReadWriteInteraction::intercepted(const ::ucbhelper::InterceptedInteraction::InterceptedRequest&                         aRequest,
  72                                                                   const ::com::sun::star::uno::Reference< ::com::sun::star::task::XInteractionRequest >& xRequest)
  73 {
  74     // we are used!
  75     m_bUsed = true;
  76
  77     // check if it's a real interception - might some parameters are not the right ones ...
  78     bool bAbort = false;
  79     switch(aRequest.Handle)
  80     {
  81     case HANDLE_INTERACTIVEIOEXCEPTION:
  82         {
  83             css::ucb::InteractiveIOException exIO;
  84             xRequest->getRequest() >>= exIO;
  85             bAbort = (
  86                 (exIO.Code == css::ucb::IOErrorCode_ACCESS_DENIED     )
  87                 || (exIO.Code == css::ucb::IOErrorCode_LOCKING_VIOLATION )
  88                 || (exIO.Code == css::ucb::IOErrorCode_NOT_EXISTING )
  89 #ifdef MACOSX
  90                 // this is a workaround for MAC, on this platform if the file is locked
  91                 // the returned error code looks to be wrong
  92                 || (exIO.Code == css::ucb::IOErrorCode_GENERAL )
  93 #endif
  94                 );
  95         }
  96         break;
  97
  98     case HANDLE_UNSUPPORTEDDATASINKEXCEPTION:
  99         {
 100             bAbort = true;
 101         }
 102         break;
 103     }
 104
 105     // handle interaction by ourself
 106     if (bAbort)
 107     {
 108         m_bHandledByMySelf = true;
 109         css::uno::Reference< css::task::XInteractionContinuation > xAbort = ::ucbhelper::InterceptedInteraction::extractContinuation(
 110             xRequest->getContinuations(),
 111             cppu::UnoType<css::task::XInteractionAbort>::get() );
 112         if (!xAbort.is())
 113             return ::ucbhelper::InterceptedInteraction::E_NO_CONTINUATION_FOUND;
 114         xAbort->select();
 115         return ::ucbhelper::InterceptedInteraction::E_INTERCEPTED;
 116     }
 117
 118     // Otherwhise use internal handler.
 119     if (m_xInterceptedHandler.is())
 120     {
 121         m_bHandledByInternalHandler = true;
 122         m_xInterceptedHandler->handle(xRequest);
 123     }
 124     return ::ucbhelper::InterceptedInteraction::E_INTERCEPTED;
 125 }
 126 }
 127
 128 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */