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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 .
*/
#ifndef INCLUDED_SVL_LSTNER_HXX
#define INCLUDED_SVL_LSTNER_HXX
#include <svl/svldllapi.h>
#include <map>
#include <memory>
#include <vector>
#ifdef DBG_UTIL
#include <sal/backtrace.hxx>
#endif
class SfxBroadcaster;
class SfxHint;
//StartListening duplicate handling options
//Prevent only adds the listener if it's not already added
//Allow allows duplicate listeners
//Unexpected, the default, is for the usual case where the
//listener should only be added once and duplicates are
//unexpected. In dbgutil mode this tracks where the original
//listener was added from and reports the duplicate addition
//as an error
enum class DuplicateHandling { Unexpected, Prevent, Allow };
class SVL_DLLPUBLIC SfxListener
{
std::vector<SfxBroadcaster*> maBCs;
#ifdef DBG_UTIL
std::map<SfxBroadcaster*, std::unique_ptr<sal::BacktraceState>>
maCallStacks;
#endif
private:
const SfxListener& operator=(const SfxListener &) = delete;
public:
SfxListener() {}
SfxListener( const SfxListener &rCopy );
virtual ~SfxListener() COVERITY_NOEXCEPT_FALSE;
void StartListening(SfxBroadcaster& rBroadcaster, DuplicateHandling eDuplicateHanding = DuplicateHandling::Unexpected);
void EndListening( SfxBroadcaster& rBroadcaster, bool bRemoveAllDuplicates = false );
void EndListeningAll();
bool IsListening( SfxBroadcaster& rBroadcaster ) const;
sal_uInt16 GetBroadcasterCount() const;
SfxBroadcaster* GetBroadcasterJOE( sal_uInt16 nNo ) const;
virtual void Notify( SfxBroadcaster& rBC, const SfxHint& rHint );
void RemoveBroadcaster_Impl( SfxBroadcaster& rBC );
/// Used to avoid cost of dynamic_cast in SdrViewIter::ImpFindView
virtual bool IsSdrView() const { return false; }
/// Used to avoid cost of dynamic_cast in SwXStyleFamily::FindStyle
virtual bool IsSwXStyle() const { return false; }
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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