advisesink.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */
 
#include <osl/diagnose.h>
#include "advisesink.hxx"
#include "olecomponent.hxx"
 
#include <rtl/ref.hxx>
 
OleWrapperAdviseSink::OleWrapperAdviseSink( OleComponent* pOleComp )
: m_nRefCount( 0 )
, m_pOleComp( pOleComp )
{
    OSL_ENSURE( m_pOleComp, "No ole component is provided!" );
}
 
OleWrapperAdviseSink::~OleWrapperAdviseSink()
{
}
 
STDMETHODIMP OleWrapperAdviseSink::QueryInterface( REFIID riid , void** ppv )
{
    *ppv=nullptr;
 
    if ( riid == IID_IUnknown )
        *ppv = static_cast<IUnknown*>(this);
 
    if ( riid == IID_IAdviseSink )
        *ppv = static_cast<IAdviseSink*>(this);
 
    if ( *ppv != nullptr )
    {
        static_cast<IUnknown*>(*ppv)->AddRef();
        return S_OK;
    }
 
    return E_NOINTERFACE;
}
 
STDMETHODIMP_(ULONG) OleWrapperAdviseSink::AddRef()
{
    return osl_atomic_increment( &m_nRefCount);
}
 
STDMETHODIMP_(ULONG) OleWrapperAdviseSink::Release()
{
    ULONG nReturn = --m_nRefCount;
    if ( m_nRefCount == 0 )
        delete this;
 
    return nReturn;
}
 
void OleWrapperAdviseSink::disconnectOleComponent()
{
    // must not be called from the descructor of OleComponent!!!
    osl::MutexGuard aGuard( m_aMutex );
    m_pOleComp = nullptr;
}
 
STDMETHODIMP_(void) OleWrapperAdviseSink::OnDataChange(FORMATETC *, STGMEDIUM *)
{
    // Unused for now ( no registration for IDataObject events )
}
 
STDMETHODIMP_(void) OleWrapperAdviseSink::OnViewChange(DWORD dwAspect, LONG)
{
    ::rtl::Reference< OleComponent > xLockComponent;
 
    {
        osl::MutexGuard aGuard( m_aMutex );
        if ( m_pOleComp )
            xLockComponent = m_pOleComp;
    }
 
    if ( xLockComponent.is() )
        xLockComponent->OnViewChange_Impl( dwAspect );
}
 
STDMETHODIMP_(void) OleWrapperAdviseSink::OnRename(IMoniker *)
{
    // handled by default inprocess handler
}
 
STDMETHODIMP_(void) OleWrapperAdviseSink::OnSave()
{
    // TODO: ???
    // The object already knows about document saving, since it controls it as ClientSide
    // other interested listeners must be registered for the object
}
 
STDMETHODIMP_(void) OleWrapperAdviseSink::OnClose()
{
    ::rtl::Reference< OleComponent > xLockComponent;
 
    {
        osl::MutexGuard aGuard( m_aMutex );
        if ( m_pOleComp )
            xLockComponent = m_pOleComp;
    }
 
    if ( xLockComponent.is() )
        xLockComponent->OnClose_Impl();
 
    // TODO: sometimes it can be necessary to simulate OnShowWindow( False ) here
}
 
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */