/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: SlsHideSlideFunction.cxx,v $
 *
 *  $Revision: 1.5 $
 *
 *  last change: $Author: vg $ $Date: 2006-04-06 16:19:34 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 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
 *
 ************************************************************************/

#include "SlsHideSlideFunction.hxx"

#include "controller/SlideSorterController.hxx"
#include "model/SlideSorterModel.hxx"
#include "model/SlsPageDescriptor.hxx"
#include "view/SlideSorterView.hxx"

#include "drawdoc.hxx"
#include "sdpage.hxx"

#include <sfx2/viewfrm.hxx>
#include <sfx2/bindings.hxx>
#include <svx/svxids.hrc>

namespace sd { namespace slidesorter { namespace controller {

TYPEINIT1(HideSlideFunction, SlideFunction);

HideSlideFunction::HideSlideFunction( SlideSorterController& rController, SfxRequest& rRequest)
: SlideFunction( rController, rRequest)
, mrController(rController)
{
}

FunctionReference HideSlideFunction::Create( SlideSorterController& rController, SfxRequest& rRequest )
{
    FunctionReference xFunc( new HideSlideFunction( rController, rRequest ) );
    xFunc->DoExecute(rRequest);
    return xFunc;
}

void HideSlideFunction::DoExecute(SfxRequest& rRequest)
{
    SlideFunction::DoExecute(rRequest);

    enum {UNDEFINED, EXCLUDED, INCLUDED, BOTH} eState (UNDEFINED);
    BOOL bState;

    // Get toggle state of the selected pages.
    model::SlideSorterModel::Enumeration aSelectedPages (
        mrController.GetModel().GetSelectedPagesEnumeration());
    while (aSelectedPages.HasMoreElements() && eState!=BOTH)
    {
        bState = aSelectedPages.GetNextElement()->GetPage()->IsExcluded();
        switch (eState)
        {
            case UNDEFINED:
                // Use the first selected page to set the inital value.
                eState = bState ? EXCLUDED : INCLUDED;
                break;

            case EXCLUDED:
                // The pages before where all not part of the show,
                // this one is.
                if ( ! bState)
                    eState = BOTH;
                break;

            case INCLUDED:
                // The pages before where all part of the show,
                // this one is not.
                if (bState)
                    eState = BOTH;
                break;

            case BOTH:
            default:
                // No need to change anything.
                break;
        }
    }

    // Toggle or set the state.
    switch (eState)
    {
        case BOTH:
        case UNDEFINED:
            eState = EXCLUDED;
            break;
        case EXCLUDED:
            eState = INCLUDED;
            break;
        case INCLUDED:
            eState = EXCLUDED;
            break;
    }

    // Set status at the selected pages.
    aSelectedPages.Rewind ();
    while (aSelectedPages.HasMoreElements())
    {
        model::SharedPageDescriptor pDescriptor (aSelectedPages.GetNextElement());
        pDescriptor->GetPage()->SetExcluded (eState==EXCLUDED);
        static_cast<view::SlideSorterView*>(pView)->RequestRepaint(pDescriptor);
    }

    SfxBindings& rBindings = pViewShell->GetViewFrame()->GetBindings();
    rBindings.Invalidate (SID_PRESENTATION);
    rBindings.Invalidate (SID_REHEARSE_TIMINGS);
    pDoc->SetChanged();
}

} } } // end of namespace ::sd::slidesorter::controller