embeddedobj/source/msole/advisesink.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 "advisesink.hxx"
  22 #include "olecomponent.hxx"
  23
  24 #include <rtl/ref.hxx>
  25
  26 OleWrapperAdviseSink::OleWrapperAdviseSink( OleComponent* pOleComp )
  27 : m_nRefCount( 0 )
  28 , m_pOleComp( pOleComp )
  29 {
  30     OSL_ENSURE( m_pOleComp, "No ole component is provided!" );
  31 }
  32
  33 OleWrapperAdviseSink::~OleWrapperAdviseSink()
  34 {
  35 }
  36
  37 STDMETHODIMP OleWrapperAdviseSink::QueryInterface( REFIID riid , void** ppv )
  38 {
  39     *ppv=nullptr;
  40
  41     if ( riid == IID_IUnknown )
  42         *ppv = static_cast<IUnknown*>(this);
  43
  44     if ( riid == IID_IAdviseSink )
  45         *ppv = static_cast<IAdviseSink*>(this);
  46
  47     if ( *ppv != nullptr )
  48     {
  49         static_cast<IUnknown*>(*ppv)->AddRef();
  50         return S_OK;
  51     }
  52
  53     return E_NOINTERFACE;
  54 }
  55
  56 STDMETHODIMP_(ULONG) OleWrapperAdviseSink::AddRef()
  57 {
  58     return osl_atomic_increment( &m_nRefCount);
  59 }
  60
  61 STDMETHODIMP_(ULONG) OleWrapperAdviseSink::Release()
  62 {
  63     ULONG nReturn = --m_nRefCount;
  64     if ( m_nRefCount == 0 )
  65         delete this;
  66
  67     return nReturn;
  68 }
  69
  70 void OleWrapperAdviseSink::disconnectOleComponent()
  71 {
  72     // must not be called from the descructor of OleComponent!!!
  73     osl::MutexGuard aGuard( m_aMutex );
  74     m_pOleComp = nullptr;
  75 }
  76
  77 STDMETHODIMP_(void) OleWrapperAdviseSink::OnDataChange(FORMATETC *, STGMEDIUM *)
  78 {
  79     // Unused for now ( no registration for IDataObject events )
  80 }
  81
  82 STDMETHODIMP_(void) OleWrapperAdviseSink::OnViewChange(DWORD dwAspect, LONG)
  83 {
  84     ::rtl::Reference< OleComponent > xLockComponent;
  85
  86     {
  87         osl::MutexGuard aGuard( m_aMutex );
  88         if ( m_pOleComp )
  89             xLockComponent = m_pOleComp;
  90     }
  91
  92     if ( xLockComponent.is() )
  93         xLockComponent->OnViewChange_Impl( dwAspect );
  94 }
  95
  96 STDMETHODIMP_(void) OleWrapperAdviseSink::OnRename(IMoniker *)
  97 {
  98     // handled by default inprocess handler
  99 }
 100
 101 STDMETHODIMP_(void) OleWrapperAdviseSink::OnSave()
 102 {
 103     // TODO: ???
 104     // The object already knows about document saving, since it controls it as ClientSide
 105     // other interested listeners must be registered for the object
 106 }
 107
 108 STDMETHODIMP_(void) OleWrapperAdviseSink::OnClose()
 109 {
 110     ::rtl::Reference< OleComponent > xLockComponent;
 111
 112     {
 113         osl::MutexGuard aGuard( m_aMutex );
 114         if ( m_pOleComp )
 115             xLockComponent = m_pOleComp;
 116     }
 117
 118     if ( xLockComponent.is() )
 119         xLockComponent->OnClose_Impl();
 120
 121     // TODO: sometimes it can be necessary to simulate OnShowWindow( False ) here
 122 }
 123
 124 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */