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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef CONFIGMGR_API_EVENTS_HXX_
#define CONFIGMGR_API_EVENTS_HXX_
#include <hash_set>
#include <map>
#include <set>
#include "osl/mutex.hxx"
#include "rtl/ref.hxx"
#include "salhelper/simplereferenceobject.hxx"
#include "configpath.hxx"
#include "utility.hxx"
namespace rtl { class OUString; }
namespace configmgr
{
class Change;
struct TreeChangeList;
class TreeManager;
namespace configuration { class AbsolutePath; }
struct IConfigListener : public salhelper::SimpleReferenceObject
{
virtual void disposing(TreeManager * pSource) = 0;
};
struct INodeListener : IConfigListener
{
virtual void nodeChanged(Change const& aChange, configuration::AbsolutePath const& aPath, TreeManager * pSource) = 0;
virtual void nodeDeleted(configuration::AbsolutePath const& aPath, TreeManager * pSource) = 0;
};
namespace internal
{
////////////////////////////////////////////////////////////////////////
template <class ListenerRef>
class BroadcastImplHelper
{
public:
osl::Mutex mutex;
public:
BroadcastImplHelper()
{}
~BroadcastImplHelper()
{
OSL_ENSURE(m_aInterfaces.empty(), "Configuration Broadcaster was not disposed properly");
}
public:
typedef std::set<ListenerRef> Interfaces;
public:
typename Interfaces::iterator addListener(ListenerRef aListener)
{
return m_aInterfaces.insert(aListener).first;
}
void removeListener(ListenerRef aListener)
{
m_aInterfaces.erase(aListener);
}
void disposing(TreeManager * pSource);
public:
typename Interfaces::const_iterator begin() const { return m_aInterfaces.begin(); }
typename Interfaces::const_iterator end() const { return m_aInterfaces.end(); }
typename Interfaces::const_iterator find(ListenerRef aListener) const { return m_aInterfaces.find(aListener); }
typename Interfaces::iterator findFull(ListenerRef aListener) { return m_aInterfaces.find(aListener); }
private:
Interfaces m_aInterfaces;
// no implementation - not copyable
BroadcastImplHelper(BroadcastImplHelper&);
void operator=(BroadcastImplHelper&);
};
////////////////////////////////////////////////////////////////////////
template <class Listener>
void BroadcastImplHelper<Listener>::disposing(TreeManager * pSource)
{
osl::ClearableMutexGuard aGuard(this->mutex); // ensure that no notifications are running
Interfaces aTargets;
aTargets.swap(m_aInterfaces);
aGuard.clear();
for(typename Interfaces::iterator it = aTargets.begin(); it != aTargets.end(); )
{
typename Interfaces::iterator cur = it++;
if (*cur)
(*cur)->disposing(pSource);
}
}
/////////////////////////////////////////////////////////////////////////
class NodeListenerInfo
{
public:
typedef std::hash_set<configuration::AbsolutePath, configuration::Path::Hash, configuration::Path::Equiv> Pathes;
public:
NodeListenerInfo(rtl::Reference<INodeListener> const& pListener)
: m_pListener(pListener)
{
}
// path handling
Pathes const& pathList() const { return m_aPathes; }
void addPath(configuration::AbsolutePath const& sPath) const { m_aPathes.insert(sPath); }
void removePath(configuration::AbsolutePath const& sPath) const { m_aPathes.erase(sPath); }
//void removeChildPathes(OUString const& sPath);
// behave as pointer for use as a 'reference' class
rtl::Reference<INodeListener> get() const { return m_pListener; }
rtl::Reference<INodeListener> operator->() const { return get(); }
INodeListener& operator*() const { return *m_pListener; }
// needed to allow if (info) ...
struct HasListener;
operator HasListener const*() const { return reinterpret_cast<HasListener*>(m_pListener.get()); }
bool operator < (NodeListenerInfo const& aInfo) const
{ return std::less<INodeListener*>()(m_pListener.get(), aInfo.m_pListener.get()); }
bool operator == (NodeListenerInfo const& aInfo) const
{ return !!( m_pListener == aInfo.m_pListener); }
bool operator > (NodeListenerInfo const& aInfo) const
{ return aInfo.operator < (*this); }
bool operator >= (NodeListenerInfo const& aInfo) const
{ return !operator<(aInfo); }
bool operator <= (NodeListenerInfo const& aInfo) const
{ return !operator>(aInfo); }
bool operator != (NodeListenerInfo const& aInfo) const
{ return !operator==(aInfo); }
private:
rtl::Reference<INodeListener> m_pListener;
mutable Pathes m_aPathes; // hack to be mutable even as set element
};
} // namespace
/////////////////////////////////////////////////////////////////////////
class ConfigChangeBroadcastHelper // broadcasts changes for a given set of options
{
public:
ConfigChangeBroadcastHelper();
~ConfigChangeBroadcastHelper();
void broadcast(TreeChangeList const& anUpdate, sal_Bool bError, TreeManager * pSource);
void addListener(configuration::AbsolutePath const& aName, rtl::Reference<INodeListener> const& );
void removeListener(rtl::Reference<INodeListener> const&);
void dispose(TreeManager * pSource);
private:
void add(configuration::AbsolutePath const& aPath, rtl::Reference<INodeListener> const& pListener);
void remove(rtl::Reference<INodeListener> const& pListener);
void dispatch(Change const& rBaseChange, configuration::AbsolutePath const& sChangeLocation, sal_Bool _bError, TreeManager * pSource);
void dispatch(TreeChangeList const& rList_, sal_Bool _bError, TreeManager * pSource);
void disposing(TreeManager * pSource);
void dispatchInner(rtl::Reference<INodeListener> const& pTarget, configuration::AbsolutePath const& sTargetPath, Change const& rBaseChange, configuration::AbsolutePath const& sChangeLocation, sal_Bool _bError, TreeManager * pSource);
void dispatchOuter(rtl::Reference<INodeListener> const& pTarget, configuration::AbsolutePath const& sTargetPath, Change const& rBaseChange, configuration::AbsolutePath const& sChangeLocation, sal_Bool _bError, TreeManager * pSource);
typedef std::multimap<configuration::AbsolutePath, internal::BroadcastImplHelper<internal::NodeListenerInfo>::Interfaces::iterator, configuration::Path::Before> PathMap;
internal::BroadcastImplHelper<internal::NodeListenerInfo> m_aListeners;
PathMap m_aPathMap;
};
} // namespace
#endif // CONFIGMGR_API_EVENTS_HXX_
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