/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
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 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_embeddedobj.hxx"

#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!\n" );
}

OleWrapperAdviseSink::~OleWrapperAdviseSink()
{
}

STDMETHODIMP OleWrapperAdviseSink::QueryInterface( REFIID riid , void** ppv )
{
	*ppv=NULL;

	if ( riid == IID_IUnknown )
		*ppv = (IUnknown*)this;

	if ( riid == IID_IAdviseSink )
		*ppv = (IAdviseSink*)this;

	if ( *ppv != NULL )
	{
		((IUnknown*)*ppv)->AddRef();
		return S_OK;
	}

	return E_NOINTERFACE;
}

STDMETHODIMP_(ULONG) OleWrapperAdviseSink::AddRef()
{
	return osl_incrementInterlockedCount( &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 = NULL;
}

STDMETHODIMP_(void) OleWrapperAdviseSink::OnDataChange(LPFORMATETC, LPSTGMEDIUM)
{
	// 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(LPMONIKER)
{
	// handled by default inprocess handler
}

STDMETHODIMP_(void) OleWrapperAdviseSink::OnSave(void)
{
	// TODO: ???
	// The object knows about document saving already since it contolls it as ClienSite
	// other interested listeners must be registered for the object
}

STDMETHODIMP_(void) OleWrapperAdviseSink::OnClose(void)
{
	::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
}