/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/


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


#include <tools/debug.hxx>
#include <sfx2/objsh.hxx>


#include "addinlis.hxx"
#include "miscuno.hxx"		// SC_IMPL_SERVICE_INFO
#include "document.hxx"
#include "brdcst.hxx"
#include "unoguard.hxx"
#include "sc.hrc"

using namespace com::sun::star;

//------------------------------------------------------------------------

//SMART_UNO_IMPLEMENTATION( ScAddInListener, UsrObject );

SC_SIMPLE_SERVICE_INFO( ScAddInListener, "ScAddInListener", "stardiv.one.sheet.AddInListener" )

//------------------------------------------------------------------------

List ScAddInListener::aAllListeners;

//------------------------------------------------------------------------

//	static
ScAddInListener* ScAddInListener::CreateListener(
						uno::Reference<sheet::XVolatileResult> xVR, ScDocument* pDoc )
{
	ScAddInListener* pNew = new ScAddInListener( xVR, pDoc );

	pNew->acquire();								// for aAllListeners
	aAllListeners.Insert( pNew, LIST_APPEND );

	if ( xVR.is() )	
		xVR->addResultListener( pNew );				// after at least 1 ref exists!

	return pNew;
}

ScAddInListener::ScAddInListener( uno::Reference<sheet::XVolatileResult> xVR, ScDocument* pDoc ) :
	xVolRes( xVR )
{
	pDocs = new ScAddInDocs( 1, 1 );
	pDocs->Insert( pDoc );
}

ScAddInListener::~ScAddInListener()
{
	delete pDocs;
}

// static
ScAddInListener* ScAddInListener::Get( uno::Reference<sheet::XVolatileResult> xVR )
{
	sheet::XVolatileResult* pComp = xVR.get();

	sal_uLong nCount = aAllListeners.Count();
	for (sal_uLong nPos=0; nPos<nCount; nPos++)
	{
		ScAddInListener* pLst = (ScAddInListener*)aAllListeners.GetObject(nPos);
		if ( pComp == (sheet::XVolatileResult*)pLst->xVolRes.get() )
			return pLst;
	}
	return NULL;		// not found
}

//!	move to some container object?
// static
void ScAddInListener::RemoveDocument( ScDocument* pDocumentP )
{
	sal_uLong nPos = aAllListeners.Count();
	while (nPos)
	{
		//	loop backwards because elements are removed
		--nPos;
		ScAddInListener* pLst = (ScAddInListener*)aAllListeners.GetObject(nPos);
		ScAddInDocs* p = pLst->pDocs;
		sal_uInt16 nFoundPos;
		if ( p->Seek_Entry( pDocumentP, &nFoundPos ) )
		{
			p->Remove( nFoundPos );
			if ( p->Count() == 0 )
			{
				// this AddIn is no longer used
				//	dont delete, just remove the ref for the list

				aAllListeners.Remove( nPos );

				if ( pLst->xVolRes.is() )	
					pLst->xVolRes->removeResultListener( pLst );

				pLst->release();	// Ref for aAllListeners - pLst may be deleted here
			}
		}
	}
}

//------------------------------------------------------------------------

// XResultListener

void SAL_CALL ScAddInListener::modified( const ::com::sun::star::sheet::ResultEvent& aEvent )
								throw(::com::sun::star::uno::RuntimeException)
{
	ScUnoGuard aGuard;			//! or generate a UserEvent

	aResult = aEvent.Value;		// store result

	if ( !HasListeners() )
	{
		//!	remove from list and removeListener, as in RemoveDocument ???

#if 0
		//!	this will crash if called before first StartListening !!!
		aAllListeners.Remove( this );
		if ( xVolRes.is() )	
			xVolRes->removeResultListener( this );
		release();	// Ref for aAllListeners - this may be deleted here
		return;
#endif
	}

	//	notify document of changes

	Broadcast( ScHint( SC_HINT_DATACHANGED, ScAddress(), NULL ) );

	const ScDocument** ppDoc = (const ScDocument**) pDocs->GetData();
	sal_uInt16 nCount = pDocs->Count();
	for ( sal_uInt16 j=0; j<nCount; j++, ppDoc++ )
	{
		ScDocument* pDoc = (ScDocument*)*ppDoc;
		pDoc->TrackFormulas();
		pDoc->GetDocumentShell()->Broadcast( SfxSimpleHint( FID_DATACHANGED ) );
		pDoc->ResetChanged( ScRange(0,0,0,MAXCOL,MAXROW,MAXTAB) );
	}
}

// XEventListener

void SAL_CALL ScAddInListener::disposing( const ::com::sun::star::lang::EventObject& /* Source */ )
								throw(::com::sun::star::uno::RuntimeException)
{
	// hold a ref so this is not deleted at removeResultListener
	uno::Reference<sheet::XResultListener> xRef( this );

	if ( xVolRes.is() )
	{
		xVolRes->removeResultListener( this );
		xVolRes = NULL;
	}
}


//------------------------------------------------------------------------