AOO410/main/svl/source/notify/broadcast.cxx

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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
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 *   http://www.apache.org/licenses/LICENSE-2.0
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 * specific language governing permissions and limitations
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// 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();
	}
}