embeddedobj/source/msole/olewrapclient.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
  22 #include "olewrapclient.hxx"
  23 #include "olecomponent.hxx"
  24
  25 // TODO: May be a mutex must be introduced
  26
  27 OleWrapperClientSite::OleWrapperClientSite( OleComponent* pOleComp )
  28 : m_nRefCount( 0 )
  29 , m_pOleComp( pOleComp )
  30 {
  31     OSL_ENSURE( m_pOleComp, "No ole component is provided!" );
  32 }
  33
  34 OleWrapperClientSite::~OleWrapperClientSite()
  35 {
  36 }
  37
  38 STDMETHODIMP OleWrapperClientSite::QueryInterface( REFIID riid , void** ppv )
  39 {
  40     *ppv=nullptr;
  41
  42     if ( riid == IID_IUnknown )
  43         *ppv = static_cast<IUnknown*>(this);
  44
  45     if ( riid == IID_IOleClientSite )
  46         *ppv = static_cast<IOleClientSite*>(this);
  47
  48     if ( *ppv != nullptr )
  49     {
  50         static_cast<IUnknown*>(*ppv)->AddRef();
  51         return S_OK;
  52     }
  53
  54     return E_NOINTERFACE;
  55 }
  56
  57 STDMETHODIMP_(ULONG) OleWrapperClientSite::AddRef()
  58 {
  59     return osl_atomic_increment( &m_nRefCount);
  60 }
  61
  62 STDMETHODIMP_(ULONG) OleWrapperClientSite::Release()
  63 {
  64     ULONG nReturn = --m_nRefCount;
  65     if ( m_nRefCount == 0 )
  66         delete this;
  67
  68     return nReturn;
  69 }
  70
  71 void OleWrapperClientSite::disconnectOleComponent()
  72 {
  73     // must not be called from the descructor of OleComponent!!!
  74     osl::MutexGuard aGuard( m_aMutex );
  75     m_pOleComp = nullptr;
  76 }
  77
  78 STDMETHODIMP OleWrapperClientSite::SaveObject()
  79 {
  80     OleComponent* pLockComponent = nullptr;
  81     HRESULT hResult = E_FAIL;
  82
  83     {
  84         osl::MutexGuard aGuard( m_aMutex );
  85         if ( m_pOleComp )
  86         {
  87             pLockComponent = m_pOleComp;
  88             pLockComponent->acquire();
  89         }
  90     }
  91
  92     if ( pLockComponent )
  93     {
  94         if ( pLockComponent->SaveObject_Impl() )
  95             hResult = S_OK;
  96
  97         pLockComponent->release();
  98     }
  99
 100     return hResult;
 101 }
 102
 103 STDMETHODIMP OleWrapperClientSite::GetMoniker( DWORD, DWORD, IMoniker **ppmk )
 104 {
 105     *ppmk = nullptr;
 106     return E_NOTIMPL;
 107 }
 108
 109 STDMETHODIMP OleWrapperClientSite::GetContainer( IOleContainer** ppContainer )
 110 {
 111     *ppContainer = nullptr;
 112     return E_NOTIMPL;
 113 }
 114
 115 STDMETHODIMP OleWrapperClientSite::ShowObject()
 116 {
 117     return S_OK;
 118 }
 119
 120 STDMETHODIMP OleWrapperClientSite::OnShowWindow( BOOL bShow )
 121 {
 122     OleComponent* pLockComponent = nullptr;
 123
 124     // TODO/LATER: redirect the notification to the main thread so that SolarMutex can be locked
 125     {
 126         osl::MutexGuard aGuard( m_aMutex );
 127         if ( m_pOleComp )
 128         {
 129             pLockComponent = m_pOleComp;
 130             pLockComponent->acquire();
 131         }
 132     }
 133
 134     if ( pLockComponent )
 135     {
 136         pLockComponent->OnShowWindow_Impl( bShow ); // the result is not interesting
 137         pLockComponent->release();
 138     }
 139
 140     return S_OK;
 141 }
 142
 143 STDMETHODIMP OleWrapperClientSite::RequestNewObjectLayout()
 144 {
 145     return E_NOTIMPL;
 146 }
 147
 148 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */