xref: /aoo41x/main/svl/source/notify/broadcast.cxx (revision 40df464e)

/**************************************************************
 *
 * 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_svl.hxx"

#ifndef GCC
#endif
#include <tools/debug.hxx>

#include <svl/listener.hxx>
#include <svl/listeneriter.hxx>
#include <svl/broadcast.hxx>
#include <svl/smplhint.hxx>


//====================================================================
TYPEINIT0(SvtBroadcaster);

//====================================================================

// simple ctor of class SvtBroadcaster

SvtBroadcaster::SvtBroadcaster()
	: pRoot( 0 )
{
}

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

// copy ctor of class SvtBroadcaster

SvtBroadcaster::SvtBroadcaster( const SvtBroadcaster &rBC )
	: pRoot( 0 )
{
	SvtListenerIter aIter( (SvtBroadcaster&)rBC );
	SvtListener* pLast = aIter.GoStart();
	if( pLast )
		do {
			pLast->StartListening( *this );
		} while( 0 != ( pLast = aIter.GoNext() ));
}

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

// unregister all listeners

SvtBroadcaster::~SvtBroadcaster()
{
	Broadcast( SfxSimpleHint(SFX_HINT_DYING) );

	SvtListenerIter aIter( *this );
	SvtListener* pLast = aIter.GoStart();
	if( pLast )
		do {
			pLast->EndListening( *this );
			if( !HasListeners() )		// all gone ??
				break;
		} while( 0 != ( pLast = aIter.GoNext() ));
}

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

// broadcast immedeately

void SvtBroadcaster::Broadcast( const SfxHint &rHint )
{
	// is anybody to notify?
	if( HasListeners() /* && !IsModifyLocked()*/ )
	{
//		LockModify();
//		bInModify = sal_True;

		SvtListenerIter aIter( *this );
		SvtListener* pLast = aIter.GoStart();
		if( pLast )
			do {
				pLast->Notify( *this, rHint );
				if( !HasListeners() )		// all gone ??
					break;
			} while( 0 != ( pLast = aIter.GoNext() ));

//		bInModify = sal_False;
//		UnlockModify();
	}
}

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


// called, if no more listeners exists

void SvtBroadcaster::ListenersGone()
{
}

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

// forward a notification to all registered listeners

void SvtBroadcaster::Forward( SvtBroadcaster& rBC, const SfxHint& rHint )
{
	// is anybody to notify?
	if( rBC.HasListeners() /* && !IsModifyLocked()*/ )
	{
//		LockModify();
//		bInModify = sal_True;

		SvtListenerIter aIter( rBC );
		SvtListener* pLast = aIter.GoStart();
		if( pLast )
			do {
				pLast->Notify( rBC, rHint );
				if( !rBC.HasListeners() )		// all gone ??
					break;
			} while( 0 != ( pLast = aIter.GoNext() ));

//		bInModify = sal_False;
//		UnlockModify();
	}
}