--- 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