/**************************************************************
 * 
 * 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
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 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sd.hxx"
#include <editeng/unoedhlp.hxx>
#include <svx/svdoutl.hxx>

#ifndef SD_ACCESSIBILITY_ACCESSIBLE_OUTLINE_EDIT_SOURCE_HXX
#include <AccessibleOutlineEditSource.hxx>
#endif
#include "OutlineView.hxx"
#include <svx/sdrpaintwindow.hxx>

namespace accessibility 
{

    AccessibleOutlineEditSource::AccessibleOutlineEditSource(
        SdrOutliner& 	rOutliner, 
        SdrView& 		rView, 
        OutlinerView& rOutlView, 
        const ::Window& rViewWindow ) 
        : mrView( rView ),
          mrWindow( rViewWindow ),
          mpOutliner( &rOutliner ),
          mpOutlinerView( &rOutlView ),
          mTextForwarder( rOutliner, 0 ),
          mViewForwarder( rOutlView )
    {       
        // register as listener - need to broadcast state change messages
        rOutliner.SetNotifyHdl( LINK(this, AccessibleOutlineEditSource, NotifyHdl) );
        StartListening(rOutliner);
    }

    AccessibleOutlineEditSource::~AccessibleOutlineEditSource()
    {
        if( mpOutliner )
            mpOutliner->SetNotifyHdl( Link() );
        Broadcast( TextHint( SFX_HINT_DYING ) );
    }

    SvxEditSource* AccessibleOutlineEditSource::Clone() const
    {
        return NULL;
    }

    SvxTextForwarder* AccessibleOutlineEditSource::GetTextForwarder()
    {
        // TODO: maybe suboptimal
        if( IsValid() )
            return &mTextForwarder;
        else
            return NULL;
    }

    SvxViewForwarder* AccessibleOutlineEditSource::GetViewForwarder()
    {
        // TODO: maybe suboptimal
        if( IsValid() )
            return this;
        else
            return NULL;
    }

    SvxEditViewForwarder* AccessibleOutlineEditSource::GetEditViewForwarder( sal_Bool )
    {
        // TODO: maybe suboptimal
        if( IsValid() )
        {
            // ignore parameter, we're always in edit mode here
            return &mViewForwarder;
        }
        else
            return NULL;
    }

    void AccessibleOutlineEditSource::UpdateData()
    {
        // NOOP, since we're always working on the 'real' outliner, 
        // i.e. changes are immediately reflected on the screen
    }

    SfxBroadcaster& AccessibleOutlineEditSource::GetBroadcaster() const
    {
        return *( const_cast< AccessibleOutlineEditSource* > (this) );
    }

	sal_Bool AccessibleOutlineEditSource::IsValid() const
    {
        if( mpOutliner && mpOutlinerView )
        {
            // Our view still on outliner?
            sal_uLong nCurrView, nViews;

            for( nCurrView=0, nViews=mpOutliner->GetViewCount(); nCurrView<nViews; ++nCurrView )
            {
                if( mpOutliner->GetView(nCurrView) == mpOutlinerView )
                    return sal_True;
            }
        }

        return sal_False;
    }

    Rectangle AccessibleOutlineEditSource::GetVisArea() const
    {
        if( IsValid() )
        {
			SdrPaintWindow* pPaintWindow = mrView.FindPaintWindow(mrWindow);
			Rectangle aVisArea;

			if(pPaintWindow)
			{
				aVisArea = pPaintWindow->GetVisibleArea();
			}

            MapMode aMapMode(mrWindow.GetMapMode());
            aMapMode.SetOrigin(Point());
            return mrWindow.LogicToPixel( aVisArea, aMapMode );
        }

        return Rectangle();        
    }

    Point AccessibleOutlineEditSource::LogicToPixel( const Point& rPoint, const MapMode& rMapMode ) const
    {
        if( IsValid() && mrView.GetModel() )
        {
            Point aPoint( OutputDevice::LogicToLogic( rPoint, rMapMode, 
                                                      MapMode(mrView.GetModel()->GetScaleUnit()) ) );
            MapMode aMapMode(mrWindow.GetMapMode());
            aMapMode.SetOrigin(Point());
            return mrWindow.LogicToPixel( aPoint, aMapMode );
        }
    
        return Point();
    }

    Point AccessibleOutlineEditSource::PixelToLogic( const Point& rPoint, const MapMode& rMapMode ) const
    {
        if( IsValid() && mrView.GetModel() )
        {
            MapMode aMapMode(mrWindow.GetMapMode());
            aMapMode.SetOrigin(Point());
            Point aPoint( mrWindow.PixelToLogic( rPoint, aMapMode ) );
            return OutputDevice::LogicToLogic( aPoint, 
                                               MapMode(mrView.GetModel()->GetScaleUnit()), 
                                               rMapMode );
        }
    
        return Point();
    }

    void AccessibleOutlineEditSource::Notify( SfxBroadcaster& rBroadcaster, const SfxHint& rHint )
    {
        bool bDispose = false;

        if( &rBroadcaster == mpOutliner )
        {
            const SfxSimpleHint* pHint = dynamic_cast< const SfxSimpleHint * >( &rHint );
            if( pHint && (pHint->GetId() == SFX_HINT_DYING) )
            {
                bDispose = true;
                mpOutliner = NULL;
            }
        }
        else
        {
            const SdrHint* pSdrHint = dynamic_cast< const SdrHint* >( &rHint );

            if( pSdrHint && ( pSdrHint->GetKind() == HINT_MODELCLEARED ) )
		    {
			    // model is dying under us, going defunc
                bDispose = true;
            }
        }

        if( bDispose )
        {
		    if( mpOutliner )
    		    mpOutliner->SetNotifyHdl( Link() );
		    mpOutliner = NULL;
		    mpOutlinerView = NULL;
		    Broadcast( TextHint( SFX_HINT_DYING ) );
        }
    }

    IMPL_LINK(AccessibleOutlineEditSource, NotifyHdl, EENotify*, aNotify)
    {
        if( aNotify )
        {
            ::std::auto_ptr< SfxHint > aHint( SvxEditSourceHelper::EENotification2Hint( aNotify) );
            
            if( aHint.get() )
                Broadcast( *aHint.get() );
        }
        
        return 0;
    }

} // end of namespace accessibility