/**************************************************************
 * 
 * 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_unotools.hxx"
#ifndef GCC
#endif
#include "rtl/instance.hxx"
#include <com/sun/star/uno/Any.hxx>
#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/io/XActiveDataSource.hpp>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/xml/sax/XParser.hpp>
#include <unotools/configmgr.hxx>
#include <unotools/configitem.hxx>
#include <tools/debug.hxx>

#include <osl/mutex.hxx>
#include <tools/string.hxx>
#include <tools/urlobj.hxx>
#include <unotools/streamwrap.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <comphelper/processfactory.hxx>

#include <unotools/accelcfg.hxx>
#include <unotools/xmlaccelcfg.hxx>
#include <unotools/pathoptions.hxx>
#include "itemholder1.hxx"


using namespace utl;
using namespace rtl;
using namespace com::sun::star::uno;
using namespace com::sun::star::io;
using namespace com::sun::star::xml::sax;


static SvtAcceleratorConfig_Impl* pOptions = NULL;
static sal_Int32           nRefCount = 0;

class SvtAcceleratorConfig_Impl
{
public:

    SvtAcceleratorItemList aList;
	bool			bModified;

                    SvtAcceleratorConfig_Impl()
                        : bModified( sal_False )
                    {}

					SvtAcceleratorConfig_Impl( Reference< XInputStream >& xInputStream );
	bool			Commit( Reference< XOutputStream >& xOutputStream );
};

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

SvtAcceleratorConfig_Impl::SvtAcceleratorConfig_Impl( Reference< XInputStream >& rInputStream )
		: bModified( false )
{
	Reference< XParser > xParser( ::comphelper::getProcessServiceFactory()->createInstance(
									::rtl::OUString::createFromAscii( "com.sun.star.xml.sax.Parser" )),
								  UNO_QUERY);

	// connect stream to input stream to the parser
	InputSource aInputSource;
	aInputSource.aInputStream = rInputStream;

	// get filter
	Reference< XDocumentHandler > xFilter( new OReadAccelatorDocumentHandler( aList ));

	// connect parser and filter
	xParser->setDocumentHandler( xFilter );
    xParser->parseStream( aInputSource );
}

bool SvtAcceleratorConfig_Impl::Commit( Reference< XOutputStream >& rOutputStream )
{
	Reference< XDocumentHandler > xWriter;

	xWriter = Reference< XDocumentHandler >( ::comphelper::getProcessServiceFactory()->createInstance(
			::rtl::OUString::createFromAscii( "com.sun.star.xml.sax.Writer" )), UNO_QUERY) ;

	Reference< ::com::sun::star::io::XActiveDataSource> xDataSource( xWriter , UNO_QUERY );
	xDataSource->setOutputStream( rOutputStream );
	try
	{
		OWriteAccelatorDocumentHandler aWriteHandler( aList, xWriter );
		aWriteHandler.WriteAcceleratorDocument();
		rOutputStream->flush();
		return true;
	}
	catch ( RuntimeException& )
	{
	}
	catch ( SAXException& )
	{
	}
	catch ( ::com::sun::star::io::IOException& )
	{
	}

	return false;
}

namespace
{
    class LocalSingleton : public rtl::Static< osl::Mutex, LocalSingleton >
    {
    };
}

SvtAcceleratorConfiguration::SvtAcceleratorConfiguration()
{
    // Global access, must be guarded (multithreading)
    ::osl::MutexGuard aGuard( LocalSingleton::get() );
    if ( !pOptions )
	{
        SvStream* pStream = GetDefaultStream( STREAM_STD_READ );
    	::utl::OInputStreamWrapper aHelper( *pStream );
		com::sun::star::uno::Reference < ::com::sun::star::io::XInputStream > xOut( &aHelper );

        try
        {
            pOptions = new SvtAcceleratorConfig_Impl( xOut );
        }
        catch ( RuntimeException& )
        {
            pOptions = new SvtAcceleratorConfig_Impl();
        }
        catch( SAXException& )
        {
            pOptions = new SvtAcceleratorConfig_Impl();
        }
        catch( ::com::sun::star::io::IOException& )
        {
            pOptions = new SvtAcceleratorConfig_Impl();
        }

		if (pOptions)
			ItemHolder1::holdConfigItem(E_ACCELCFG);

        delete pStream;
    }

    ++nRefCount;
    pImp = pOptions;
}

SvtAcceleratorConfiguration* SvtAcceleratorConfiguration::CreateFromStream( SvStream& rStream )
{
    SvtAcceleratorConfiguration* pRet = new SvtAcceleratorConfiguration;
    ::utl::OInputStreamWrapper aHelper( rStream );
    com::sun::star::uno::Reference < ::com::sun::star::io::XInputStream > xOut( &aHelper );
    try
    {
        pRet->pImp = new SvtAcceleratorConfig_Impl( xOut );
    }
    catch ( RuntimeException& )
    {
        DELETEZ( pRet );
    }
    catch( SAXException& )
    {
        DELETEZ( pRet );
    }
    catch( ::com::sun::star::io::IOException& )
    {
        DELETEZ( pRet );
    }

    return pRet;
}

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

SvtAcceleratorConfiguration::~SvtAcceleratorConfiguration()
{
    if ( pImp == pOptions )
    {
        // Global access, must be guarded (multithreading)
        ::osl::MutexGuard aGuard( LocalSingleton::get() );
        if ( !--nRefCount )
        {
			if ( pImp->bModified )
			{
    			String aUserConfig = SvtPathOptions().GetUserConfigPath();
    			INetURLObject aObj( aUserConfig );
    			aObj.insertName( String::CreateFromAscii("GlobalKeyBindings.xml") );
    			SvStream* pStream = ::utl::UcbStreamHelper::CreateStream( aObj.GetMainURL( INetURLObject::NO_DECODE ), STREAM_STD_READWRITE|STREAM_TRUNC );
    			::utl::OOutputStreamWrapper aHelper( *pStream );
				com::sun::star::uno::Reference < ::com::sun::star::io::XOutputStream > xOut( &aHelper );
				pImp->Commit( xOut );
				delete pStream;
			}

            DELETEZ( pOptions );
        }
    }
    else
    {
        delete pImp;
    }
}

::rtl::OUString SvtAcceleratorConfiguration::GetCommand( const ::com::sun::star::awt::KeyEvent& rKeyEvent )
{
    sal_Int16 nCode=rKeyEvent.KeyCode, nModifier=rKeyEvent.Modifiers;
    if ( !nCode )
        nCode = rKeyEvent.KeyFunc;

	std::list< SvtAcceleratorConfigItem>::const_iterator p;
	for ( p = pImp->aList.begin(); p != pImp->aList.end(); p++ )
		if ( p->nCode == nCode && p->nModifier == nModifier )
            return p->aCommand;

	return ::rtl::OUString();
}

const SvtAcceleratorItemList& SvtAcceleratorConfiguration::GetItems()
{
	return pImp->aList;
}

void SvtAcceleratorConfiguration::SetCommand( const SvtAcceleratorConfigItem& rItem )
{
	std::list< SvtAcceleratorConfigItem>::iterator p;
	for ( p = pImp->aList.begin(); p != pImp->aList.end(); p++ )
		if ( p->nCode == rItem.nCode && p->nModifier == rItem.nModifier )
		{
            p->aCommand = rItem.aCommand;
			return;
		}

	pImp->aList.push_back( rItem );

}

void SvtAcceleratorConfiguration::SetItems( const SvtAcceleratorItemList& rItems, bool bClear )
{
	if ( bClear )
	{
		pImp->aList = rItems;
	}
	else
	{
		std::list< SvtAcceleratorConfigItem>::const_iterator p;
		for ( p = rItems.begin(); p != rItems.end(); p++ )
            SetCommand( *p );
	}
}

String SvtAcceleratorConfiguration::GetStreamName()
{
    return String::CreateFromAscii("KeyBindings.xml");
}

SvStream* SvtAcceleratorConfiguration::GetDefaultStream( StreamMode nMode )
{
	String aUserConfig = SvtPathOptions().GetUserConfigPath();
    INetURLObject aObj( aUserConfig );
    aObj.insertName( GetStreamName() );
    return ::utl::UcbStreamHelper::CreateStream( aObj.GetMainURL( INetURLObject::NO_DECODE ), nMode );
}