libreoffice/svtools/source/config/startoptions.cxx

/*************************************************************************
 *
 *  $RCSfile: startoptions.cxx,v $
 *
 *  $Revision: 1.2 $
 *
 *  last change: $Author: as $ $Date: 2000-10-31 11:39:45 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
 *
 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License version 2.1, as published by the Free Software Foundation.
 *
 *  This library 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 for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.1 (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.openoffice.org/license.html.
 *
 *  Software provided under this License is provided on an "AS IS" basis,
 *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
 *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
 *  See the License for the specific provisions governing your rights and
 *  obligations concerning the Software.
 *
 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
 *
 *  Copyright: 2000 by Sun Microsystems, Inc.
 *
 *  All Rights Reserved.
 *
 *  Contributor(s): _______________________________________
 *
 *
 ************************************************************************/

#pragma hdrstop

//_________________________________________________________________________________________________________________
//  includes
//_________________________________________________________________________________________________________________

#include "startoptions.hxx"

#ifndef _UTL_CONFIGMGR_HXX_
#include <unotools/configmgr.hxx>
#endif

#ifndef _UTL_CONFIGITEM_HXX_
#include <unotools/configitem.hxx>
#endif

#ifndef _TOOLS_DEBUG_HXX
#include <tools/debug.hxx>
#endif

#ifndef _COM_SUN_STAR_UNO_ANY_HXX_
#include <com/sun/star/uno/Any.hxx>
#endif

#ifndef _COM_SUN_STAR_UNO_SEQUENCE_HXX_
#include <com/sun/star/uno/Sequence.hxx>
#endif

//_________________________________________________________________________________________________________________
//  namespaces
//_________________________________________________________________________________________________________________

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

//_________________________________________________________________________________________________________________
//  const
//_________________________________________________________________________________________________________________

#define ROOTNODE_START                  OUString(RTL_CONSTASCII_USTRINGPARAM("Office.Common/Start"  ))
#define DEFAULT_SHOWINTRO               sal_True

#define PROPERTYNAME_SHOWINTRO          OUString(RTL_CONSTASCII_USTRINGPARAM("ShowIntro"            ))

#define PROPERTYHANDLE_SHOWINTRO        0

#define PROPERTYCOUNT                   1

//_________________________________________________________________________________________________________________
//  private declarations!
//_________________________________________________________________________________________________________________

class SvtStartOptions_Impl : public ConfigItem
{
    //-------------------------------------------------------------------------------------------------------------
    //  public methods
    //-------------------------------------------------------------------------------------------------------------

    public:

        //---------------------------------------------------------------------------------------------------------
        //  constructor / destructor
        //---------------------------------------------------------------------------------------------------------

         SvtStartOptions_Impl();
        ~SvtStartOptions_Impl();

        //---------------------------------------------------------------------------------------------------------
        //  overloaded methods of baseclass
        //---------------------------------------------------------------------------------------------------------

        /*-****************************************************************************************************//**
            @short      called for notify of configmanager
            @descr      These method is called from the ConfigManager before application ends or from the
                         PropertyChangeListener if the sub tree broadcasts changes. You must update your
                        internal values.

            @ATTENTION  We don't implement these method - because we support readonly values at runtime only!

            @seealso    baseclass ConfigItem

            @param      "seqPropertyNames" is the list of properties which should be updated.
            @return     -

            @onerror    -
        *//*-*****************************************************************************************************/

        virtual void Notify( const Sequence< OUString >& seqPropertyNames )
        {
            DBG_ASSERT( sal_False, "SvtStartOptions_Impl::Notify()\nNot implemented yet - we support readonly values only!\n" );
        }

        /*-****************************************************************************************************//**
            @short      write changes to configuration
            @descr      These method writes the changed values into the sub tree
                        and should always called in our destructor to guarantee consistency of config data.

            @ATTENTION  We don't implement these method - because we support readonly values at runtime only!

            @seealso    baseclass ConfigItem

            @param      -
            @return     -

            @onerror    -
        *//*-*****************************************************************************************************/

        virtual void Commit()
        {
            DBG_ASSERT( sal_False, "SvtStartOptions_Impl::Commit()\nNot implemented yet - we support readonly values only!\n" );
        }

        //---------------------------------------------------------------------------------------------------------
        //  public interface
        //---------------------------------------------------------------------------------------------------------

        /*-****************************************************************************************************//**
            @short      access method to get internal values
            @descr      These method give us a chance to regulate acces to ouer internal values.
                        It's not used in the moment - but it's possible for the feature!

            @seealso    -

            @param      -
            @return     -

            @onerror    -
        *//*-*****************************************************************************************************/

        sal_Bool ShowIntro() const;

    //-------------------------------------------------------------------------------------------------------------
    //  private methods
    //-------------------------------------------------------------------------------------------------------------

    private:

        /*-****************************************************************************************************//**
            @short      return list of fix key names of ouer configuration management which represent oue module tree
            @descr      These methods return a static const list of key names. We need it to get needed values from our
                        configuration management. We return well known key names only - because the "UserData" node
                        is handled in a special way!

            @seealso    -

            @param      -
            @return     A list of needed configuration keys is returned.

            @onerror    -
        *//*-*****************************************************************************************************/

        static Sequence< OUString > impl_GetPropertyNames();

    //-------------------------------------------------------------------------------------------------------------
    //  private member
    //-------------------------------------------------------------------------------------------------------------

    private:

        sal_Bool    m_bShowIntro    ;   /// cache "ShowIntro" of Start section
};

//_________________________________________________________________________________________________________________
//  definitions
//_________________________________________________________________________________________________________________

//*****************************************************************************************************************
//  constructor
//*****************************************************************************************************************
SvtStartOptions_Impl::SvtStartOptions_Impl()
    // Init baseclasses first
    :   ConfigItem          ( ROOTNODE_START    )
    // Init member then.
    ,   m_bShowIntro        ( DEFAULT_SHOWINTRO )
{
    // Use our static list of configuration keys to get his values.
    Sequence< OUString >    seqNames    = impl_GetPropertyNames();
    Sequence< Any >         seqValues   = GetProperties( seqNames ) ;

    // Safe impossible cases.
    // We need values from ALL configuration keys.
    // Follow assignment use order of values in relation to our list of key names!
    DBG_ASSERT( !(seqNames.getLength()!=seqValues.getLength()), "SvtStartOptions_Impl::SvtStartOptions_Impl()\nI miss some values of configuration keys!\n" );

    // Copy values from list in right order to ouer internal member.
    sal_Int32 nPropertyCount    =   seqValues.getLength()   ;
    sal_Int32 nProperty         =   0                       ;
    for( nProperty=0; nProperty<nPropertyCount; ++nProperty )
    {
        // Safe impossible cases.
        // Check any for valid value.
        DBG_ASSERT( !(seqValues[nProperty].hasValue()==sal_False), "SvtStartOptions_Impl::SvtStartOptions_Impl()\nInvalid property value for property detected!\n" );
        switch( nProperty )
        {
            case PROPERTYHANDLE_SHOWINTRO   :   {
                                                     DBG_ASSERT(!(seqValues[nProperty].getValueTypeClass()!=TypeClass_BOOLEAN), "SvtStartOptions_Impl::SvtStartOptions_Impl()\nWho has changed the value type of \"Office.Common\\Start\\ShowIntro\"?" );
                                                    seqValues[nProperty] >>= m_bShowIntro;
                                                }
                                                break;
        }
    }

    // Don't enable notification mechanism of ouer baseclass!
    // We support readonly variables in the moment.
}

//*****************************************************************************************************************
//  destructor
//*****************************************************************************************************************
SvtStartOptions_Impl::~SvtStartOptions_Impl()
{
}

//*****************************************************************************************************************
//  public method
//*****************************************************************************************************************
sal_Bool SvtStartOptions_Impl::ShowIntro() const
{
    return m_bShowIntro;
}

//*****************************************************************************************************************
//  private method
//*****************************************************************************************************************
Sequence< OUString > SvtStartOptions_Impl::impl_GetPropertyNames()
{
    // Build static list of configuration key names.
    static const OUString pProperties[] =
    {
        PROPERTYNAME_SHOWINTRO  ,
    };
    // Initialize return sequence with these list ...
    static const Sequence< OUString > seqPropertyNames( pProperties, PROPERTYCOUNT );
    // ... and return it.
    return seqPropertyNames;
}

//*****************************************************************************************************************
//  initialize static member
//  DON'T DO IT IN YOUR HEADER!
//  see definition for further informations
//*****************************************************************************************************************
SvtStartOptions_Impl*   SvtStartOptions::m_pDataContainer   = NULL  ;
sal_Int32               SvtStartOptions::m_nRefCount        = 0     ;

//*****************************************************************************************************************
//  constructor
//*****************************************************************************************************************
SvtStartOptions::SvtStartOptions()
{
    // Global access, must be guarded (multithreading!).
    MutexGuard aGuard( GetInitMutex() );
    // Increase ouer refcount ...
    ++m_nRefCount;
    // ... and initialize ouer data container only if it not already!
    if( m_pDataContainer == NULL )
    {
        m_pDataContainer = new SvtStartOptions_Impl();
    }
}

//*****************************************************************************************************************
//  destructor
//*****************************************************************************************************************
SvtStartOptions::~SvtStartOptions()
{
    // Global access, must be guarded (multithreading!)
    MutexGuard aGuard( GetInitMutex() );
    // Decrease ouer refcount.
    --m_nRefCount;
    // If last instance was deleted ...
    // we must destroy ouer static data container!
    if( m_nRefCount <= 0 )
    {
        delete m_pDataContainer;
        m_pDataContainer = NULL;
    }
}

//*****************************************************************************************************************
//  public method
//*****************************************************************************************************************
sal_Bool SvtStartOptions::ShowIntro() const
{
    MutexGuard aGuard( GetInitMutex() );
    return m_pDataContainer->ShowIntro();
}

//*****************************************************************************************************************
//  private method
//*****************************************************************************************************************
Mutex& SvtStartOptions::GetInitMutex()
{
    // 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 follow 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 ouer class will be fastr 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;
}