mulwidgets/muldatamodel/src/mulpullmode.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:56:02 +0200
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/*
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* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies). 
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Implementation of Pull Mode
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*
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*/
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//Includes
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#include "mulpullmode.h"
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#include <mul/imulmodelprovider.h>
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#include "mulassert.h"
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#include "mulcachemanager.h"
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#include "muldatawindow.h"
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#include "mulpagedatawindow.h"
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#include "mul/mulmodelutility.h"
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#include "mullog.h"
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#include "mulasyncdataprovider.h"
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namespace Alf
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    { 
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// ---------------------------------------------------------------------------
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// MulPullMode()
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// ---------------------------------------------------------------------------
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//
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MulPullMode::MulPullMode(MulPageDataWindow& aDataWindow,
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						 const IMulModelProvider& aModelProvider)
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			:MulPushMode( aDataWindow )
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	{	
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	//mModelProvider = const_cast<IMulModelProvider*>( &aModelProvider );
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	MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::MulPullModeImpl()");
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	mModelProvider.reset( new (ELeave) MulAsyncDataProvider( const_cast<IMulModelProvider&>(aModelProvider), aDataWindow ));		
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	}
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// ---------------------------------------------------------------------------
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// ~MulPullMode()
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// ---------------------------------------------------------------------------
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//
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MulPullMode::~MulPullMode()
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	{
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	// No implementation is required.
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	MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::~MulPullModeImpl()");
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	}
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// ------------------------ From IMulModel -----------------------------------
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// ---------------------------------------------------------------------------
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// Update
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// ---------------------------------------------------------------------------
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//
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void MulPullMode::Update(int aIndex, int aCount, const MulDataPath& /*aPath*/)
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	{
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	// throw exception if index is out of bound
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	__MUL_ASSERT( aIndex >= 0 && aCount > 0 && aIndex+aCount <= mCacheManager->ExpandedNodeCount(), KLInvalidArgument );
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	int startIndex = aIndex;
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	int range = 0;
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	bool firstTime = true;
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	for(int i = aIndex; i < aCount+aIndex ; ++i)
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		{
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		if( mDataWindow.IsItemInDataWindow(i) )
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			{
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			range++;
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			firstTime = true;
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			}
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		else
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			{
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			if(firstTime)
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				{
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				firstTime = false;
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				if(range>0)
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					{
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					ProvideData(startIndex,range);
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					range = 0;						
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					}
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				}
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			startIndex = i + 1;			
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			}
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		}
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	ProvideData(startIndex,range);	
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	}
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// ---------------------------------------------------------------------------
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// Refresh
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// ---------------------------------------------------------------------------
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//
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void MulPullMode::Refresh( int aCount, const MulDataPath& aPath )
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	{
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	int modelCountBefore  = mCacheManager->ExpandedNodeCount();
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	// remove all old nodes
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    for(int currentIndex = 0; currentIndex < modelCountBefore; currentIndex++)	
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		{
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		mCacheManager->RemoveVisualItem(aPath,0);			
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		}
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    //mCacheManager->RemoveVisalItem(0, aCount, aPath );
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    // insert new nodes	
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	mCacheManager->CreateNodes( 0, aCount, aPath );	
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	int modelCount = mCacheManager->ExpandedNodeCount();		
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	// update alf model accordingly
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	if(mDataWindow.IsWindowEnabled())
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		{
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		if(modelCountBefore == modelCount)
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			{
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			Update(0,aCount,aPath);
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			}
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		else
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			{
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			ModelCountChanged(modelCountBefore,modelCount);	
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			}		
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		}				
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	}
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// ---------------------------------------------------------------------------
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// SetData
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// ---------------------------------------------------------------------------
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//
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void MulPullMode::SetData(int aIndex, auto_ptr<MulVisualItem> aVisualItem,const MulDataPath& aPath)
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	{
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	MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::SetData()");
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	__MUL_ASSERT( aIndex >= 0 && aIndex < Count(aPath),_L("Invalid Argument."));
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	//Set data to model
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	if( mDataWindow.IsItemInDataWindow( aIndex ) )
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		{		
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		MulPushMode::SetData( aIndex, aVisualItem, aPath );
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		}
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	}
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// ---------------------------------------------------------------------------
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// SetTemplate
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// ---------------------------------------------------------------------------
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//
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void MulPullMode::SetTemplate( mulwidget::TLogicalTemplate aTemplateId )
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	{
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	mDefaultTemplate = aTemplateId;
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	MulDataPath path ;
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	if( mDataWindow.IsWindowEnabled() )
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		{
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		int topOffset = mDataWindow.TopOffset();
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		int bottomOffset = mDataWindow.BottomOffset();
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		for( int i = topOffset ; i <= bottomOffset ; i++ )
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			{
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			MulPushMode::SetTemplate( i, mDefaultTemplate, path);			
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			}
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		int rearTopOffset = mDataWindow.RearTopOffset();
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		int rearBottomOffset = mDataWindow.RearBottomOffset();
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        for( int i = rearTopOffset; i <= rearBottomOffset && i >= 0 ; i++ )
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			{	
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			MulPushMode::SetTemplate( i, mDefaultTemplate, path);
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			}
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		}
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	}
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// ---------------------------------------------------------------------------
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// WindowSiftedDown
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// ---------------------------------------------------------------------------
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//
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void MulPullMode::WindowSiftedDown()
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	{
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	MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::WindowSiftedDown"); 	
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	// If the complete datawindow is invalid.   	
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//	if(mDataWindow.TopOffset() - mDataWindow.OldTopOffset() > mDataWindow.ActualBufferSize() 
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//		&& mDataWindow.OldTopOffset() != KNotInitialized)
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	//if(mDataWindow.TopOffset() - mDataWindow.OldTopOffset() > mDataWindow.ActualBufferSize() )
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	int oldTopOffset = mDataWindow.OldTopOffset();
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	int oldBottomOffset = mDataWindow.OldBottomOffset();
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	int topOffset = mDataWindow.TopOffset();
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	int bottomOffset = mDataWindow.BottomOffset();
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	int oldRearTopOffset = mDataWindow.OldRearTopOffset();
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	int oldRearBottomOffset = mDataWindow.OldRearBottomOffset();
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   193
	
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	 if(  ( oldTopOffset == KNotInitialized && oldBottomOffset == KNotInitialized ) ||
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	      ( topOffset - oldTopOffset >= mDataWindow.ActualBufferSize()) ||
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	      ( oldRearTopOffset != KNotInitialized && 
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	      ( topOffset - oldTopOffset >= ( mDataWindow.WindowSize() + mDataWindow.BufferSize() ) ) 
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	    ) ) 
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		{
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		//remove old data from  cache
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        for( int i = oldTopOffset ; i <= oldBottomOffset && i >= 0 ; i++ )
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            {
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            mCacheManager->RemoveVisualItem( i );          
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            }
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        for( int i = oldRearTopOffset; i <= oldRearBottomOffset && i >= 0 ; i++ )
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            {   
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            mCacheManager->RemoveVisualItem( i );
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            }
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		int startIndex = topOffset;
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		int range = bottomOffset - startIndex + 1;
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		MUL_LOG_INFO2("MUL::MulPullModeImpl::WindowSiftedUp ProvideData startIndex:%d,range:%d",startIndex,range);
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    	ProvideData(startIndex,range);
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		} 
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	else
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		{
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		//remove extra items from top and add new items at bottom
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		for( int i = oldTopOffset ; i >= 0 && i < topOffset ; i++ )
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			{       
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			//remove item from top
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			mCacheManager->RemoveVisualItem( i );
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			}
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   225
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		int startIndex = oldBottomOffset +1 ;
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		int range = ( bottomOffset - oldBottomOffset );				
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		MUL_LOG_INFO2("MUL::MulPullModeImpl::DataWindowUpdated ProvideData startIndex:%d,range:%d",startIndex,range); 		       
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    	ProvideData(startIndex,range);				
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		}
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	}
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// ---------------------------------------------------------------------------
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// WindowSiftedUp
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// ---------------------------------------------------------------------------
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//
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void MulPullMode::WindowSiftedUp()
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	{
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	MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::WindowSiftedUp "); 
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	// If the complete datawindow is invalid.  	
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//	if(mDataWindow.OldBottomOffset() - mDataWindow.BottomOffset() > mDataWindow.ActualBufferSize()
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//		&& mDataWindow.OldBottomOffset() != KNotInitialized)
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	  if( mDataWindow.OldBottomOffset() - mDataWindow.BottomOffset() >= mDataWindow.ActualBufferSize() ||
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	    ( mDataWindow.OldRearBottomOffset() != KNotInitialized && 
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	      ( mDataWindow.OldBottomOffset() - mDataWindow.BottomOffset() >= ( mDataWindow.WindowSize() + mDataWindow.BufferSize() ) ) 
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	    ) )	
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		{
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		//remove old data from  cache
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        for( int i = mDataWindow.OldTopOffset() ; i <= mDataWindow.OldBottomOffset() && i >= 0 ; i++ )
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            {
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            mCacheManager->RemoveVisualItem( i );          
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            }
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        for( int i = mDataWindow.OldRearTopOffset( ); i <= mDataWindow.OldRearBottomOffset() && i >= 0 ; i++ )
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            {   
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            mCacheManager->RemoveVisualItem( i );
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            }
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		int startIndex = mDataWindow.TopOffset();
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		int range = mDataWindow.BottomOffset() - startIndex + 1;
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		MUL_LOG_INFO2("MUL::MulPullModeImpl::WindowSiftedUp ProvideData startIndex:%d,range:%d",startIndex,range);
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		ProvideData(startIndex,range);
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		}  
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	else
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		{
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		//remove extra items from bottom and add at top
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		for( int i = mDataWindow.BottomOffset() ; i < mDataWindow.OldBottomOffset() ; i++ )
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			{		
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			mCacheManager->RemoveVisualItem(i+1);
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			}
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		int startIndex = mDataWindow.TopOffset();
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		int range = mDataWindow.OldTopOffset() - mDataWindow.TopOffset();
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		MUL_LOG_INFO2("MUL::MulPullModeImpl::WindowSiftedUp ProvideData startIndex:%d,range:%d",startIndex,range); 		       
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		ProvideData(startIndex,range);			
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		}  			
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	}
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// ---------------------------------------------------------------------------
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// ProvideData
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// ---------------------------------------------------------------------------
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//
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void MulPullMode::ProvideData(int aStartIndex, int aRange)
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	{
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	 //call provide data for visible window first then for buffer
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	if( aRange > 0 )
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	    {
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	    // check if the current higlighted item is there in the data asked for
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	    if( mDataWindow.Highlight() >= aStartIndex &&
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	            mDataWindow.Highlight() < aStartIndex+aRange )
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	        {
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	        mModelProvider->ProvideData( mDataWindow.Highlight(), 1 ,MulDataPath(),true );
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	        }
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	    //__MUL_ASSERT( ( aRange % 18 ) == 0, _L("Invalid Renage") );
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	    //check that visible data is there in provide data call
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	    if( aStartIndex < mDataWindow.TopWindowOffset() && 
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	        aStartIndex+aRange > mDataWindow.BottomWindowOffset() )
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	        {
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	            {
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	            //request visible item
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                int startIndex = mDataWindow.TopWindowOffset();
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                int range = ( mDataWindow.BottomWindowOffset() - mDataWindow.TopWindowOffset() ) + 1 ; 
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                MUL_LOG_INFO2("MUL::MulPullModeImpl::ProvideData visible buffer startIndex:%d,range:%d",startIndex,range);
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                mModelProvider->ProvideData(startIndex, range ,MulDataPath() );
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                }
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    	        {
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    	        //request item from top
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    	        int startIndex = aStartIndex;
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    	        int range = mDataWindow.TopWindowOffset() - startIndex; 
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    	        MUL_LOG_INFO2("MUL::MulPullModeImpl::ProvideData top buffer startIndex:%d,range:%d",startIndex,range);
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    	        mModelProvider->ProvideData(startIndex, range ,MulDataPath() );
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    	        }
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    	        {
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    	        //request item from bottom
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                int startIndex = mDataWindow.BottomWindowOffset() + 1 ;
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                int range = ( aStartIndex + aRange - 1) - mDataWindow.BottomWindowOffset(); 
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                MUL_LOG_INFO2("MUL::MulPullModeImpl::ProvideData bottom buffer startIndex:%d,range:%d",startIndex,range);
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                mModelProvider->ProvideData(startIndex, range ,MulDataPath() );
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                }
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	        }
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	    else
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	        {
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	        //there is not provide data pending for visible window
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	        mModelProvider->ProvideData(aStartIndex, aRange ,MulDataPath() );
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	        }
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	    }
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	}
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// ---------------------------------------------------------------------------
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// ModelCountChanged
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// ---------------------------------------------------------------------------
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//
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void MulPullMode::ModelCountChanged(int aOldCount, int aNewCount)
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    {
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    MUL_LOG_ENTRY_EXIT("MUL::MulPullMode::AdjustOffsetAndData()");
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parents:
diff changeset
   344
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   345
    MUL_LOG_INFO1("MUL::MulPullMode::AdjustAlfModelData() modelCount:%d", aNewCount );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   346
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   347
    MulPushMode::ModelCountChanged( aOldCount, aNewCount );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   348
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   349
    // fetch data for the new buffers
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   350
    if( mDataWindow.RearTopOffset() != KNotInitialized &&
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   351
        mDataWindow.RearBottomOffset() != KNotInitialized )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   352
        {   
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   353
        if(mDataWindow.RearTopOffset() == 0)
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   354
            {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   355
            //updating all buffer
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   356
            ProvideData( mDataWindow.RearTopOffset() , mDataWindow.RearBottomOffset() - 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   357
                mDataWindow.RearTopOffset() + 1);
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   358
            
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   359
            ProvideData( mDataWindow.TopOffset() , mDataWindow.BottomOffset() -
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   360
                mDataWindow.TopOffset() + 1);
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   361
            }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   362
        else
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   363
            {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   364
            ProvideData( mDataWindow.TopOffset() , mDataWindow.BottomOffset() -
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   365
                mDataWindow.TopOffset() + 1);
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   366
                
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   367
            ProvideData( mDataWindow.RearTopOffset() , mDataWindow.RearBottomOffset() - 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   368
                mDataWindow.RearTopOffset() + 1);                               
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   369
            }       
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   370
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   371
    else
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   372
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   373
        ProvideData( mDataWindow.TopOffset() , mDataWindow.BottomOffset() -
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   374
             mDataWindow.TopOffset() + 1);  
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   375
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   376
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   377
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   378
// ---------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   379
// DataWindowUpdated
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   380
// ---------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   381
//    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   382
void MulPullMode::DataWindowUpdated()
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   383
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   384
    //here sequence of Function call are important dont change function call sequences
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   385
    //UpdateLoopBuffer must be called first 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   386
    if( mDataWindow.RearTopOffset() != KNotInitialized &&
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   387
        mDataWindow.OldRearTopOffset() != KNotInitialized ) //there is looping on
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   388
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   389
        UpdateLoopBuffer();
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   390
        //returning from here only dont need to do any thing else
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   391
        return ;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
    //window shifted down
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
    if( mDataWindow.OldBottomOffset() < mDataWindow.BottomOffset() )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
        WindowSiftedDown();     
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
        }       
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
    //window shifted up
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
    else if( mDataWindow.OldTopOffset() > mDataWindow.TopOffset())
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   401
        WindowSiftedUp();       
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   402
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   403
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   404
     //add buffer in looping case
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   405
    if(mDataWindow.RearTopOffset() != KNotInitialized && mDataWindow.RearBottomOffset() != KNotInitialized) //rear offset changed
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   406
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   407
        // here ask data from top to bottom
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   408
        int startIndex = mDataWindow.RearTopOffset()  ;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   409
        int range = mDataWindow.RearBottomOffset() - mDataWindow.RearTopOffset() + 1;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   410
                
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   411
        MUL_LOG_INFO2("MUL::MulPullMode::DataWindowUpdated startIndex:%d,range:%d",startIndex,range);              
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   412
        ProvideData(startIndex,range); 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   413
        }       
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   414
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   415
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   416
// ---------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   417
// UpdateLoopBuffer
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   418
// ---------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   419
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   420
void MulPullMode::UpdateLoopBuffer()
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   421
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   422
    MUL_LOG_ENTRY_EXIT("MUL::MulPushMode::UpdateLoopBuffer");   
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   423
    if( mDataWindow.RearTopOffset() < mDataWindow.OldRearTopOffset() )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   424
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   425
        int startIndex = mDataWindow.TopOffset();
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   426
        int range = mDataWindow.OldRearTopOffset() - startIndex;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   427
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   428
        MUL_LOG_INFO2("MUL::MulPushMode::UpdateLoopBuffer startIndex:%d,range:%d",startIndex,range);               
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   429
        ProvideData(startIndex,range);
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   430
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   431
    else
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   432
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   433
        int startIndex = mDataWindow.OldRearBottomOffset()+1 ;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   434
        int range = mDataWindow.BottomOffset() - startIndex + 1;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   435
         
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   436
        MUL_LOG_INFO2("MUL::MulPushMode::UpdateLoopBuffer startIndex:%d,range:%d",startIndex,range);               
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   437
        ProvideData(startIndex,range);
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   438
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   439
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   440
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   441
// ---------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   442
// Item
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   443
// ---------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   444
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   445
const MulVisualItem& MulPullMode::Item( int aAbsoluteIndex )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   446
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   447
    MulVisualItem* visualItem = mCacheManager->Data( aAbsoluteIndex );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   448
    if( !visualItem )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   449
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   450
        if( mDataWindow.IsItemInDataWindow(aAbsoluteIndex) )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   451
            {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   452
            std::auto_ptr<MulVisualItem> dummyItem = MulModelUtility::CreateVisualItem( Template() );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   453
            visualItem = dummyItem.get();
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   454
            mCacheManager->AddVisualItem(dummyItem, MulDataPath() ,aAbsoluteIndex );  
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   455
            }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   456
        else
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   457
            {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   458
            throw std::invalid_argument(KInvalidArgument);  
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   459
            }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   460
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   461
    return *visualItem; 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   462
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   463
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   464
				
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   465
    } // namespace Alf
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   466
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   467
//End of file