/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: eventcfg.cxx,v $
 * $Revision: 1.8.24.1 $
 *
 * 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.
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svtools.hxx"

#include "eventcfg.hxx"
#include <unotools/configmgr.hxx>
#include <unotools/configitem.hxx>
#include <tools/debug.hxx>
#include <com/sun/star/uno/Any.hxx>
#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/beans/PropertyValue.hpp>
#include <cppuhelper/weakref.hxx>

#ifndef __SGI_STL_HASH_MAP
#include <hash_map>
#endif
#include <tools/urlobj.hxx>
#include <rtl/ustrbuf.hxx>

#include <itemholder1.hxx>

#include <algorithm>

using namespace ::std					;
using namespace ::utl					;
using namespace ::rtl					;
using namespace ::osl					;
using namespace ::com::sun::star::uno	;
using namespace ::com::sun::star;

#define ROOTNODE_EVENTS OUString(RTL_CONSTASCII_USTRINGPARAM("Office.Events/ApplicationEvents" ))
#define PATHDELIMITER OUString(RTL_CONSTASCII_USTRINGPARAM("/"))
#define SETNODE_BINDINGS OUString(RTL_CONSTASCII_USTRINGPARAM("Bindings" ))
#define PROPERTYNAME_BINDINGURL OUString(RTL_CONSTASCII_USTRINGPARAM("BindingURL"))

GlobalEventConfig_Impl::GlobalEventConfig_Impl()
    :   ConfigItem( ROOTNODE_EVENTS, CONFIG_MODE_IMMEDIATE_UPDATE )
{
    // the supported event names
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnStartApp"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnCloseApp"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnNew"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnUnload"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnPrepareUnload"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnLoad"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnSave"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnSaveAs"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnSaveDone"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnSaveAsDone"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnFocus"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnUnfocus"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnPrint"));
    m_supportedEvents.push_back(::rtl::OUString::createFromAscii("OnModifyChanged"));

    initBindingInfo();
    
/*TODO: Not used in the moment! see Notify() ...
	// Enable notification mechanism of our baseclass.
	// We need it to get information about changes outside these class on our used configuration keys! */
    Sequence< OUString > aNotifySeq( 1 );
    aNotifySeq[0] = OUString( RTL_CONSTASCII_USTRINGPARAM( "Events" ));
    EnableNotification( aNotifySeq, sal_True );
}

//*****************************************************************************************************************
//	destructor
//*****************************************************************************************************************
GlobalEventConfig_Impl::~GlobalEventConfig_Impl()
{
	// We must save our current values .. if user forget it!
	if( IsModified() == sal_True )
	{
		Commit();
	}
}

//*****************************************************************************************************************
//	public method
//*****************************************************************************************************************
void GlobalEventConfig_Impl::Notify( const Sequence< OUString >& )
{
    MutexGuard aGuard( GlobalEventConfig::GetOwnStaticMutex() );

    initBindingInfo(); 

    // dont forget to update all existing frames and her might cached dispatch objects!
    // But look for already killed frames. We hold weak references instead of hard ones ...
    for (FrameVector::const_iterator pIt  = m_lFrames.begin();
                                        pIt != m_lFrames.end()  ;
                                      ++pIt                     )
    {
        ::com::sun::star::uno::Reference< ::com::sun::star::frame::XFrame > xFrame(pIt->get(), ::com::sun::star::uno::UNO_QUERY);
        if (xFrame.is())
            xFrame->contextChanged();
    }
}

//*****************************************************************************************************************
//	public method
//*****************************************************************************************************************
void GlobalEventConfig_Impl::Commit()
{
    //DF need to check it this is correct??
    OSL_TRACE("In GlobalEventConfig_Impl::Commit");
    EventBindingHash::const_iterator it = m_eventBindingHash.begin();
    EventBindingHash::const_iterator it_end = m_eventBindingHash.end();
    // clear the existing nodes
    ClearNodeSet( SETNODE_BINDINGS );
    Sequence< beans::PropertyValue > seqValues( 1 );
    OUString sNode;
    static const OUString sPrefix(SETNODE_BINDINGS + PATHDELIMITER + OUString::createFromAscii("BindingType['"));
    static const OUString sPostfix(OUString::createFromAscii("']") + PATHDELIMITER + PROPERTYNAME_BINDINGURL);
    //step through the list of events
    for(int i=0;it!=it_end;++it,++i)
    {
        //no point in writing out empty bindings!
        if(it->second.getLength() == 0 )
            continue;
        sNode = sPrefix + it->first + sPostfix;
        OSL_TRACE("writing binding for: %s",::rtl::OUStringToOString(sNode , RTL_TEXTENCODING_ASCII_US ).pData->buffer);
        seqValues[ 0 ].Name = sNode;
        seqValues[ 0 ].Value <<= it->second;
        //write the data to the registry
        SetSetProperties(SETNODE_BINDINGS,seqValues);
    }
}

//*****************************************************************************************************************
//  public method
//*****************************************************************************************************************
void GlobalEventConfig_Impl::EstablishFrameCallback(const ::com::sun::star::uno::Reference< ::com::sun::star::frame::XFrame >& xFrame)
{
    // check if frame already exists inside list
    // ignore double registrations
    // every frame must be notified one times only!
    ::com::sun::star::uno::WeakReference< ::com::sun::star::frame::XFrame > xWeak(xFrame);
    FrameVector::const_iterator pIt = ::std::find(m_lFrames.begin(), m_lFrames.end(), xWeak);
    if (pIt == m_lFrames.end())
        m_lFrames.push_back(xWeak);
}

//*****************************************************************************************************************
//	private method
//*****************************************************************************************************************
void GlobalEventConfig_Impl::initBindingInfo()
{
	// Get ALL names of current existing list items in configuration!
    Sequence< OUString > lEventNames      = GetNodeNames( SETNODE_BINDINGS, utl::CONFIG_NAME_LOCAL_PATH );

	OUString aSetNode( SETNODE_BINDINGS );
	aSetNode += PATHDELIMITER;

	OUString aCommandKey( PATHDELIMITER );
	aCommandKey += PROPERTYNAME_BINDINGURL;

	// Expand all keys
    Sequence< OUString > lMacros(1);
	for (sal_Int32 i=0; i<lEventNames.getLength(); ++i )
	{
		OUStringBuffer aBuffer( 32 );
		aBuffer.append( aSetNode );
		aBuffer.append( lEventNames[i] );
		aBuffer.append( aCommandKey );
		lMacros[0] = aBuffer.makeStringAndClear();
        OSL_TRACE("reading binding for: %s",::rtl::OUStringToOString(lMacros[0] , RTL_TEXTENCODING_ASCII_US ).pData->buffer);
        Sequence< Any > lValues = GetProperties( lMacros );
        OUString sMacroURL;
        if( lValues.getLength() > 0 )
        {
            lValues[0] >>= sMacroURL;
            sal_Int32 startIndex = lEventNames[i].indexOf('\'');
            sal_Int32 endIndex =  lEventNames[i].lastIndexOf('\'');
            if( startIndex >=0 && endIndex > 0 )
            {
                startIndex++;
                OUString eventName = lEventNames[i].copy(startIndex,endIndex-startIndex);
                m_eventBindingHash[ eventName ] = sMacroURL;
            }
        }
	}
}

Reference< container::XNameReplace > SAL_CALL GlobalEventConfig_Impl::getEvents() throw (::com::sun::star::uno::RuntimeException)
{
    //how to return this object as an XNameReplace?
    Reference< container::XNameReplace > ret;
    return ret;
}

void SAL_CALL GlobalEventConfig_Impl::replaceByName( const OUString& aName, const Any& aElement ) throw (lang::IllegalArgumentException, container::NoSuchElementException, lang::WrappedTargetException, RuntimeException)
{
    Sequence< beans::PropertyValue > props;
    //DF should we prepopulate the hash with a list of valid event Names?
    if( sal_False == ( aElement >>= props ) )
    {
        throw lang::IllegalArgumentException( OUString(),
                Reference< XInterface > (), 2);
    }
    OUString macroURL;
    sal_Int32 nPropCount = props.getLength();
    for( sal_Int32 index = 0 ; index < nPropCount ; ++index )
    {
        if ( props[ index ].Name.compareToAscii( "Script" ) == 0 )
            props[ index ].Value >>= macroURL;
    }
    m_eventBindingHash[ aName ] = macroURL;
    SetModified();
}

Any SAL_CALL GlobalEventConfig_Impl::getByName( const OUString& aName ) throw (container::NoSuchElementException, lang::WrappedTargetException, RuntimeException)
{
    Any aRet;
    Sequence< beans::PropertyValue > props(2);
    props[0].Name = OUString::createFromAscii("EventType");
    props[0].Value <<= OUString::createFromAscii("Script");
    props[1].Name = OUString::createFromAscii("Script");
    EventBindingHash::const_iterator it = m_eventBindingHash.find( aName );
    if( it != m_eventBindingHash.end() )
    {
        props[1].Value <<= it->second;
    }
    else
    {
        // not yet accessed - is it a supported name?
        SupportedEventsVector::const_iterator pos = ::std::find(
            m_supportedEvents.begin(), m_supportedEvents.end(), aName );
        if ( pos == m_supportedEvents.end() )
            throw container::NoSuchElementException( aName, NULL );

        props[1].Value <<= OUString();
    }
    aRet <<= props;
    return aRet;
}

Sequence< OUString > SAL_CALL GlobalEventConfig_Impl::getElementNames(  ) throw (RuntimeException)
{
    const ::rtl::OUString* pRet = m_supportedEvents.empty() ? NULL : &m_supportedEvents[0];
	return uno::Sequence< ::rtl::OUString >(pRet, m_supportedEvents.size()); 
}

sal_Bool SAL_CALL GlobalEventConfig_Impl::hasByName( const OUString& aName ) throw (RuntimeException)
{
    if ( m_eventBindingHash.find( aName ) != m_eventBindingHash.end() )
        return sal_True;

    // never accessed before - is it supported in general?
    SupportedEventsVector::const_iterator pos = ::std::find(
        m_supportedEvents.begin(), m_supportedEvents.end(), aName );
    if ( pos != m_supportedEvents.end() )
        return sal_True;

    return sal_False;
}

Type SAL_CALL GlobalEventConfig_Impl::getElementType(  ) throw (RuntimeException)
{
    //DF definitly not sure about this??
    return ::getCppuType((const Sequence<beans::PropertyValue>*)0);
}

sal_Bool SAL_CALL GlobalEventConfig_Impl::hasElements(  ) throw (RuntimeException)
{
    return ( m_eventBindingHash.empty() );
}

// and now the wrapper


//initialize static member
GlobalEventConfig_Impl*     GlobalEventConfig::m_pImpl = NULL  ;
sal_Int32                   GlobalEventConfig::m_nRefCount      = 0     ;

GlobalEventConfig::GlobalEventConfig()
{
    // Global access, must be guarded (multithreading!).
    MutexGuard aGuard( GetOwnStaticMutex() );
	// Increase our refcount ...
	++m_nRefCount;
	// ... and initialize our data container only if it not already exist!
    if( m_pImpl == NULL )
	{
        m_pImpl = new GlobalEventConfig_Impl;
        ItemHolder1::holdConfigItem(E_EVENTCFG);
	}
}

GlobalEventConfig::~GlobalEventConfig()
{
    // Global access, must be guarded (multithreading!)
    MutexGuard aGuard( GetOwnStaticMutex() );
	// Decrease our refcount.
	--m_nRefCount;
	// If last instance was deleted ...
	// we must destroy our static data container!
    if( m_nRefCount <= 0 )
	{
		delete m_pImpl;
		m_pImpl = NULL;
	}
}

void GlobalEventConfig::EstablishFrameCallback(const ::com::sun::star::uno::Reference< ::com::sun::star::frame::XFrame >& xFrame)
{
    MutexGuard aGuard( GetOwnStaticMutex() );
    m_pImpl->EstablishFrameCallback( xFrame );
}

Reference< container::XNameReplace > SAL_CALL GlobalEventConfig::getEvents() throw (::com::sun::star::uno::RuntimeException)
{
    MutexGuard aGuard( GetOwnStaticMutex() );
    Reference< container::XNameReplace > ret(this);
    return ret;
}

void SAL_CALL GlobalEventConfig::replaceByName( const OUString& aName, const Any& aElement ) throw (lang::IllegalArgumentException, container::NoSuchElementException, lang::WrappedTargetException, RuntimeException)
{
    MutexGuard aGuard( GetOwnStaticMutex() );
    m_pImpl->replaceByName( aName, aElement );
}
Any SAL_CALL GlobalEventConfig::getByName( const OUString& aName ) throw (container::NoSuchElementException, lang::WrappedTargetException, RuntimeException)
{
    MutexGuard aGuard( GetOwnStaticMutex() );
    return m_pImpl->getByName( aName );
}
Sequence< OUString > SAL_CALL GlobalEventConfig::getElementNames(  ) throw (RuntimeException)
{
    MutexGuard aGuard( GetOwnStaticMutex() );
    return m_pImpl->getElementNames( );
}
sal_Bool SAL_CALL GlobalEventConfig::hasByName( const OUString& aName ) throw (RuntimeException)
{
    MutexGuard aGuard( GetOwnStaticMutex() );
    return m_pImpl->hasByName( aName );
}
Type SAL_CALL GlobalEventConfig::getElementType(  ) throw (RuntimeException)
{
    MutexGuard aGuard( GetOwnStaticMutex() );
    return m_pImpl->getElementType( );
}
sal_Bool SAL_CALL GlobalEventConfig::hasElements(  ) throw (RuntimeException)
{
    MutexGuard aGuard( GetOwnStaticMutex() );
    return m_pImpl->hasElements( );
}

Mutex& GlobalEventConfig::GetOwnStaticMutex()
{
	// Initialize static mutex only for one time!
    static Mutex* pMutex = NULL;
	// If these method first called (Mutex not already exist!) ...
    if( pMutex == NULL )
    {
		// ... we must create a new one. Protect following code with 
        // the global mutex -
		// It must be - we create a static variable!
        MutexGuard aGuard( Mutex::getGlobalMutex() );
		// We must check our pointer again - because it can be that 
        // another instance of our class will be faster then these!
        if( pMutex == NULL )
        {
			// Create the new mutex and set it for return on static variable.
            static Mutex aMutex;
            pMutex = &aMutex;
        }
    }
	// Return new created or already existing mutex object.
    return *pMutex;
}
