diff -r 4526337fb576 -r 3eca7e70b1b8 mulwidgets/muldatamodel/src/mulpullmode.cpp
--- a/mulwidgets/muldatamodel/src/mulpullmode.cpp	Tue Feb 02 00:28:09 2010 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,467 +0,0 @@
-/*
-* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies). 
-* All rights reserved.
-* This component and the accompanying materials are made available
-* under the terms of "Eclipse Public License v1.0"
-* which accompanies this distribution, and is available
-* at the URL "http://www.eclipse.org/legal/epl-v10.html".
-*
-* Initial Contributors:
-* Nokia Corporation - initial contribution.
-*
-* Contributors:
-*
-* Description:  Implementation of Pull Mode
-*
-*/
-
-
-//Includes
-#include "mulpullmode.h"
-
-#include <mul/imulmodelprovider.h>
-
-
-#include "mulassert.h"
-#include "mulcachemanager.h"
-#include "muldatawindow.h"
-#include "mulpagedatawindow.h"
-#include "mul/mulmodelutility.h"
-#include "mullog.h"
-#include "mulasyncdataprovider.h"
-
-namespace Alf
-    { 
-    
-// ---------------------------------------------------------------------------
-// MulPullMode()
-// ---------------------------------------------------------------------------
-//
-MulPullMode::MulPullMode(MulPageDataWindow& aDataWindow,
-						 const IMulModelProvider& aModelProvider)
-			:MulPushMode( aDataWindow )
-	{	
-	//mModelProvider = const_cast<IMulModelProvider*>( &aModelProvider );
-	MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::MulPullModeImpl()");
-	mModelProvider.reset( new (ELeave) MulAsyncDataProvider( const_cast<IMulModelProvider&>(aModelProvider), aDataWindow ));		
-	}
-
-// ---------------------------------------------------------------------------
-// ~MulPullMode()
-// ---------------------------------------------------------------------------
-//
-MulPullMode::~MulPullMode()
-	{
-	// No implementation is required.
-	MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::~MulPullModeImpl()");
-	}
-
-// ------------------------ From IMulModel -----------------------------------
-
-// ---------------------------------------------------------------------------
-// Update
-// ---------------------------------------------------------------------------
-//
-void MulPullMode::Update(int aIndex, int aCount, const MulDataPath& /*aPath*/)
-	{
-	// throw exception if index is out of bound
-	__MUL_ASSERT( aIndex >= 0 && aCount > 0 && aIndex+aCount <= mCacheManager->ExpandedNodeCount(), KLInvalidArgument );
-	
-	int startIndex = aIndex;
-	int range = 0;
-	bool firstTime = true;
-	for(int i = aIndex; i < aCount+aIndex ; ++i)
-		{
-		if( mDataWindow.IsItemInDataWindow(i) )
-			{
-			range++;
-			firstTime = true;
-			}
-		else
-			{
-			if(firstTime)
-				{
-				firstTime = false;
-				if(range>0)
-					{
-					ProvideData(startIndex,range);
-					range = 0;						
-					}
-				}
-			startIndex = i + 1;			
-			}
-		}
-	ProvideData(startIndex,range);	
-	}
-
-// ---------------------------------------------------------------------------
-// Refresh
-// ---------------------------------------------------------------------------
-//
-void MulPullMode::Refresh( int aCount, const MulDataPath& aPath )
-	{
-	int modelCountBefore  = mCacheManager->ExpandedNodeCount();
-	
-	// remove all old nodes
-    for(int currentIndex = 0; currentIndex < modelCountBefore; currentIndex++)	
-		{
-		mCacheManager->RemoveVisualItem(aPath,0);			
-		}
-    
-    //mCacheManager->RemoveVisalItem(0, aCount, aPath );
-	
-    // insert new nodes	
-	mCacheManager->CreateNodes( 0, aCount, aPath );	
-
-	int modelCount = mCacheManager->ExpandedNodeCount();		
-	// update alf model accordingly
-	if(mDataWindow.IsWindowEnabled())
-		{
-		if(modelCountBefore == modelCount)
-			{
-			Update(0,aCount,aPath);
-			}
-		else
-			{
-			ModelCountChanged(modelCountBefore,modelCount);	
-			}		
-		}				
-	}
-		
-// ---------------------------------------------------------------------------
-// SetData
-// ---------------------------------------------------------------------------
-//
-void MulPullMode::SetData(int aIndex, auto_ptr<MulVisualItem> aVisualItem,const MulDataPath& aPath)
-	{
-	MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::SetData()");
-	
-	__MUL_ASSERT( aIndex >= 0 && aIndex < Count(aPath),_L("Invalid Argument."));
-		
-	//Set data to model
-	if( mDataWindow.IsItemInDataWindow( aIndex ) )
-		{		
-		MulPushMode::SetData( aIndex, aVisualItem, aPath );
-		}
-	}
-
-// ---------------------------------------------------------------------------
-// SetTemplate
-// ---------------------------------------------------------------------------
-//
-void MulPullMode::SetTemplate( mulwidget::TLogicalTemplate aTemplateId )
-	{
-	mDefaultTemplate = aTemplateId;
-
-	MulDataPath path ;
-	if( mDataWindow.IsWindowEnabled() )
-		{
-		int topOffset = mDataWindow.TopOffset();
-		int bottomOffset = mDataWindow.BottomOffset();
-		for( int i = topOffset ; i <= bottomOffset ; i++ )
-			{
-			MulPushMode::SetTemplate( i, mDefaultTemplate, path);			
-			}
-		
-		int rearTopOffset = mDataWindow.RearTopOffset();
-		int rearBottomOffset = mDataWindow.RearBottomOffset();
-        for( int i = rearTopOffset; i <= rearBottomOffset && i >= 0 ; i++ )
-			{	
-			MulPushMode::SetTemplate( i, mDefaultTemplate, path);
-			}
-		}
-	}
-
-// ---------------------------------------------------------------------------
-// WindowSiftedDown
-// ---------------------------------------------------------------------------
-//
-void MulPullMode::WindowSiftedDown()
-	{
-	MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::WindowSiftedDown"); 	
-		
-	// If the complete datawindow is invalid.   	
-//	if(mDataWindow.TopOffset() - mDataWindow.OldTopOffset() > mDataWindow.ActualBufferSize() 
-//		&& mDataWindow.OldTopOffset() != KNotInitialized)
-	//if(mDataWindow.TopOffset() - mDataWindow.OldTopOffset() > mDataWindow.ActualBufferSize() )
-	int oldTopOffset = mDataWindow.OldTopOffset();
-	int oldBottomOffset = mDataWindow.OldBottomOffset();
-	int topOffset = mDataWindow.TopOffset();
-	int bottomOffset = mDataWindow.BottomOffset();
-	int oldRearTopOffset = mDataWindow.OldRearTopOffset();
-	int oldRearBottomOffset = mDataWindow.OldRearBottomOffset();
-	
-	 if(  ( oldTopOffset == KNotInitialized && oldBottomOffset == KNotInitialized ) ||
-	      ( topOffset - oldTopOffset >= mDataWindow.ActualBufferSize()) ||
-	      ( oldRearTopOffset != KNotInitialized && 
-	      ( topOffset - oldTopOffset >= ( mDataWindow.WindowSize() + mDataWindow.BufferSize() ) ) 
-	    ) ) 
-		{
-		//remove old data from  cache
-        for( int i = oldTopOffset ; i <= oldBottomOffset && i >= 0 ; i++ )
-            {
-            mCacheManager->RemoveVisualItem( i );          
-            }
-        
-        for( int i = oldRearTopOffset; i <= oldRearBottomOffset && i >= 0 ; i++ )
-            {   
-            mCacheManager->RemoveVisualItem( i );
-            }
-        
-		int startIndex = topOffset;
-		int range = bottomOffset - startIndex + 1;
-		
-		MUL_LOG_INFO2("MUL::MulPullModeImpl::WindowSiftedUp ProvideData startIndex:%d,range:%d",startIndex,range);
-    	ProvideData(startIndex,range);
-		} 
-	else
-		{
-		//remove extra items from top and add new items at bottom
-		for( int i = oldTopOffset ; i >= 0 && i < topOffset ; i++ )
-			{       
-			//remove item from top
-			mCacheManager->RemoveVisualItem( i );
-			}
-
-		int startIndex = oldBottomOffset +1 ;
-		int range = ( bottomOffset - oldBottomOffset );				
-		MUL_LOG_INFO2("MUL::MulPullModeImpl::DataWindowUpdated ProvideData startIndex:%d,range:%d",startIndex,range); 		       
-    	ProvideData(startIndex,range);				
-		}
-	}
-
-// ---------------------------------------------------------------------------
-// WindowSiftedUp
-// ---------------------------------------------------------------------------
-//
-void MulPullMode::WindowSiftedUp()
-	{
-	MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::WindowSiftedUp "); 
-	// If the complete datawindow is invalid.  	
-//	if(mDataWindow.OldBottomOffset() - mDataWindow.BottomOffset() > mDataWindow.ActualBufferSize()
-//		&& mDataWindow.OldBottomOffset() != KNotInitialized)
-
-	  if( mDataWindow.OldBottomOffset() - mDataWindow.BottomOffset() >= mDataWindow.ActualBufferSize() ||
-	    ( mDataWindow.OldRearBottomOffset() != KNotInitialized && 
-	      ( mDataWindow.OldBottomOffset() - mDataWindow.BottomOffset() >= ( mDataWindow.WindowSize() + mDataWindow.BufferSize() ) ) 
-	    ) )	
-		{
-		//remove old data from  cache
-        for( int i = mDataWindow.OldTopOffset() ; i <= mDataWindow.OldBottomOffset() && i >= 0 ; i++ )
-            {
-            mCacheManager->RemoveVisualItem( i );          
-            }
-        
-        for( int i = mDataWindow.OldRearTopOffset( ); i <= mDataWindow.OldRearBottomOffset() && i >= 0 ; i++ )
-            {   
-            mCacheManager->RemoveVisualItem( i );
-            }
-		        
-		int startIndex = mDataWindow.TopOffset();
-		int range = mDataWindow.BottomOffset() - startIndex + 1;
-		
-		MUL_LOG_INFO2("MUL::MulPullModeImpl::WindowSiftedUp ProvideData startIndex:%d,range:%d",startIndex,range);
-		ProvideData(startIndex,range);
-		}  
-	else
-		{
-		//remove extra items from bottom and add at top
-		for( int i = mDataWindow.BottomOffset() ; i < mDataWindow.OldBottomOffset() ; i++ )
-			{		
-			mCacheManager->RemoveVisualItem(i+1);
-			}
-
-		int startIndex = mDataWindow.TopOffset();
-		int range = mDataWindow.OldTopOffset() - mDataWindow.TopOffset();
-
-		MUL_LOG_INFO2("MUL::MulPullModeImpl::WindowSiftedUp ProvideData startIndex:%d,range:%d",startIndex,range); 		       
-		ProvideData(startIndex,range);			
-		}  			
-	}
-
-// ---------------------------------------------------------------------------
-// ProvideData
-// ---------------------------------------------------------------------------
-//
-void MulPullMode::ProvideData(int aStartIndex, int aRange)
-	{
-	 //call provide data for visible window first then for buffer
-	if( aRange > 0 )
-	    {
-	    // check if the current higlighted item is there in the data asked for
-	    if( mDataWindow.Highlight() >= aStartIndex &&
-	            mDataWindow.Highlight() < aStartIndex+aRange )
-	        {
-	        mModelProvider->ProvideData( mDataWindow.Highlight(), 1 ,MulDataPath(),true );
-	        }
-	    //__MUL_ASSERT( ( aRange % 18 ) == 0, _L("Invalid Renage") );
-	    //check that visible data is there in provide data call
-	    if( aStartIndex < mDataWindow.TopWindowOffset() && 
-	        aStartIndex+aRange > mDataWindow.BottomWindowOffset() )
-	        {
-	            {
-	            //request visible item
-                int startIndex = mDataWindow.TopWindowOffset();
-                int range = ( mDataWindow.BottomWindowOffset() - mDataWindow.TopWindowOffset() ) + 1 ; 
-                
-                MUL_LOG_INFO2("MUL::MulPullModeImpl::ProvideData visible buffer startIndex:%d,range:%d",startIndex,range);
-                mModelProvider->ProvideData(startIndex, range ,MulDataPath() );
-                }
-	        
-    	        {
-    	        //request item from top
-    	        int startIndex = aStartIndex;
-    	        int range = mDataWindow.TopWindowOffset() - startIndex; 
-    	        
-    	        MUL_LOG_INFO2("MUL::MulPullModeImpl::ProvideData top buffer startIndex:%d,range:%d",startIndex,range);
-    	        mModelProvider->ProvideData(startIndex, range ,MulDataPath() );
-    	        }
-    	        
-    	        {
-    	        //request item from bottom
-                int startIndex = mDataWindow.BottomWindowOffset() + 1 ;
-                int range = ( aStartIndex + aRange - 1) - mDataWindow.BottomWindowOffset(); 
-
-                MUL_LOG_INFO2("MUL::MulPullModeImpl::ProvideData bottom buffer startIndex:%d,range:%d",startIndex,range);
-                mModelProvider->ProvideData(startIndex, range ,MulDataPath() );
-                }
-	        }
-	    else
-	        {
-	        //there is not provide data pending for visible window
-	        mModelProvider->ProvideData(aStartIndex, aRange ,MulDataPath() );
-	        }
-	    }
-	}
-
-// ---------------------------------------------------------------------------
-// ModelCountChanged
-// ---------------------------------------------------------------------------
-//
-void MulPullMode::ModelCountChanged(int aOldCount, int aNewCount)
-    {
-    MUL_LOG_ENTRY_EXIT("MUL::MulPullMode::AdjustOffsetAndData()");
-    
-    MUL_LOG_INFO1("MUL::MulPullMode::AdjustAlfModelData() modelCount:%d", aNewCount );
-    
-    MulPushMode::ModelCountChanged( aOldCount, aNewCount );
-    
-    // fetch data for the new buffers
-    if( mDataWindow.RearTopOffset() != KNotInitialized &&
-        mDataWindow.RearBottomOffset() != KNotInitialized )
-        {   
-        if(mDataWindow.RearTopOffset() == 0)
-            {
-            //updating all buffer
-            ProvideData( mDataWindow.RearTopOffset() , mDataWindow.RearBottomOffset() - 
-                mDataWindow.RearTopOffset() + 1);
-            
-            ProvideData( mDataWindow.TopOffset() , mDataWindow.BottomOffset() -
-                mDataWindow.TopOffset() + 1);
-            }
-        else
-            {
-            ProvideData( mDataWindow.TopOffset() , mDataWindow.BottomOffset() -
-                mDataWindow.TopOffset() + 1);
-                
-            ProvideData( mDataWindow.RearTopOffset() , mDataWindow.RearBottomOffset() - 
-                mDataWindow.RearTopOffset() + 1);                               
-            }       
-        }
-    else
-        {
-        ProvideData( mDataWindow.TopOffset() , mDataWindow.BottomOffset() -
-             mDataWindow.TopOffset() + 1);  
-        }
-    }
-
-// ---------------------------------------------------------------------------
-// DataWindowUpdated
-// ---------------------------------------------------------------------------
-//    
-void MulPullMode::DataWindowUpdated()
-    {
-    //here sequence of Function call are important dont change function call sequences
-    //UpdateLoopBuffer must be called first 
-    if( mDataWindow.RearTopOffset() != KNotInitialized &&
-        mDataWindow.OldRearTopOffset() != KNotInitialized ) //there is looping on
-        {
-        UpdateLoopBuffer();
-        //returning from here only dont need to do any thing else
-        return ;
-        }
-    //window shifted down
-    if( mDataWindow.OldBottomOffset() < mDataWindow.BottomOffset() )
-        {
-        WindowSiftedDown();     
-        }       
-    //window shifted up
-    else if( mDataWindow.OldTopOffset() > mDataWindow.TopOffset())
-        {
-        WindowSiftedUp();       
-        }
-
-     //add buffer in looping case
-    if(mDataWindow.RearTopOffset() != KNotInitialized && mDataWindow.RearBottomOffset() != KNotInitialized) //rear offset changed
-        {
-        // here ask data from top to bottom
-        int startIndex = mDataWindow.RearTopOffset()  ;
-        int range = mDataWindow.RearBottomOffset() - mDataWindow.RearTopOffset() + 1;
-                
-        MUL_LOG_INFO2("MUL::MulPullMode::DataWindowUpdated startIndex:%d,range:%d",startIndex,range);              
-        ProvideData(startIndex,range); 
-        }       
-    }
-
-// ---------------------------------------------------------------------------
-// UpdateLoopBuffer
-// ---------------------------------------------------------------------------
-//
-void MulPullMode::UpdateLoopBuffer()
-    {
-    MUL_LOG_ENTRY_EXIT("MUL::MulPushMode::UpdateLoopBuffer");   
-    if( mDataWindow.RearTopOffset() < mDataWindow.OldRearTopOffset() )
-        {
-        int startIndex = mDataWindow.TopOffset();
-        int range = mDataWindow.OldRearTopOffset() - startIndex;
-    
-        MUL_LOG_INFO2("MUL::MulPushMode::UpdateLoopBuffer startIndex:%d,range:%d",startIndex,range);               
-        ProvideData(startIndex,range);
-        }
-    else
-        {
-        int startIndex = mDataWindow.OldRearBottomOffset()+1 ;
-        int range = mDataWindow.BottomOffset() - startIndex + 1;
-         
-        MUL_LOG_INFO2("MUL::MulPushMode::UpdateLoopBuffer startIndex:%d,range:%d",startIndex,range);               
-        ProvideData(startIndex,range);
-        }
-    }
-
-// ---------------------------------------------------------------------------
-// Item
-// ---------------------------------------------------------------------------
-//
-const MulVisualItem& MulPullMode::Item( int aAbsoluteIndex )
-    {
-    MulVisualItem* visualItem = mCacheManager->Data( aAbsoluteIndex );
-    if( !visualItem )
-        {
-        if( mDataWindow.IsItemInDataWindow(aAbsoluteIndex) )
-            {
-            std::auto_ptr<MulVisualItem> dummyItem = MulModelUtility::CreateVisualItem( Template() );
-            visualItem = dummyItem.get();
-            mCacheManager->AddVisualItem(dummyItem, MulDataPath() ,aAbsoluteIndex );  
-            }
-        else
-            {
-            throw std::invalid_argument(KInvalidArgument);  
-            }
-        }
-    return *visualItem; 
-    }
-
-				
-    } // namespace Alf
-
-//End of file