profilesapplication/Profiles/ProfileApp/SettingsViewSrc/CProfileIndexHandler.cpp
branchRCL_3
changeset 19 cd54903d48da
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/profilesapplication/Profiles/ProfileApp/SettingsViewSrc/CProfileIndexHandler.cpp	Wed Sep 01 12:30:29 2010 +0100
@@ -0,0 +1,235 @@
+/*
+* Copyright (c) 2002 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:  Profile index handler (for use of Settings Container
+*                if multiple profiles are edited)
+*
+*/
+
+
+//  INCLUDES
+#include "CProfileIndexHandler.h"
+
+#include <MProfilesNamesArray.h>
+#include <eiklbx.h>
+
+#include "CProfileEngineHandler.h"
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CProfileIndexHandler::CProfileIndexHandler
+// C++ constructor can NOT contain any code, that might leave.
+// -----------------------------------------------------------------------------
+//
+CProfileIndexHandler::CProfileIndexHandler(
+    CProfileEngineHandler& aEngineHandler )
+    :   iEngineHandler( aEngineHandler )
+    {
+    }
+
+void CProfileIndexHandler::ConstructL()
+    {
+    }
+
+EXPORT_C CProfileIndexHandler* CProfileIndexHandler::NewL(
+    CProfileEngineHandler& aEngineHandler )
+    {
+    CProfileIndexHandler* self =
+        new( ELeave ) CProfileIndexHandler( aEngineHandler );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+CProfileIndexHandler::~CProfileIndexHandler()
+    {
+    iIndexArray.Close();
+    }
+
+// -----------------------------------------------------------------------------
+// CProfileIndexHandler::CurrentProfileIndex
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TInt CProfileIndexHandler::CurrentProfileIndex() const
+	{
+	return iCurrentProfileIndex;
+	}
+
+// -----------------------------------------------------------------------------
+// CProfileIndexHandler::SetCurrentProfileIndex
+// Note that there is no boundary checking.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CProfileIndexHandler::SetCurrentProfileIndex( TInt aIndex )
+	{
+	iCurrentProfileIndex = aIndex;
+	}
+
+// -----------------------------------------------------------------------------
+// CProfileIndexHandler::CreateIndexArrayL
+// Resets the index array and populates it with zeroes
+// -----------------------------------------------------------------------------
+//
+void CProfileIndexHandler::CreateIndexArrayL()
+    {
+    iIndexArray.Reset();
+    TItem item = { 0, 0 };
+    TInt count( iEngineHandler.IdArray()->MdcaCount() );
+    while( --count >= 0 )
+        {
+        User::LeaveIfError( iIndexArray.Append( item ) );
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CProfileIndexHandler::StoreIndices
+// -----------------------------------------------------------------------------
+//
+void CProfileIndexHandler::StoreIndices()
+    {
+    if( !iListBox )
+        {
+        return;
+        }
+
+    TItem& item = iIndexArray[iCurrentProfileIndex];
+    item.iIndex = iListBox->View()->CurrentItemIndex();
+    item.iTopIndex = iListBox->View()->TopItemIndex() - item.iIndex;
+    }
+
+// -----------------------------------------------------------------------------
+// CProfileIndexHandler::LoadIndices
+// -----------------------------------------------------------------------------
+//
+void CProfileIndexHandler::LoadIndices()
+    {
+    if( !iListBox )
+        {
+        return;
+        }
+
+    const TInt KMaxLastIndex( 2 ); // Three items fit to screen at the same time
+
+    TInt lastIndex( iListBox->Model()->MatchableTextArray()->MdcaCount() - 1 );
+
+    TItem item = iIndexArray[iCurrentProfileIndex];
+    if( item.iIndex > lastIndex )
+        {
+        item.iIndex = lastIndex;
+        }
+    if( item.iIndex < 0 )
+        {
+        item.iIndex = 0;
+        }
+    item.iTopIndex += item.iIndex;
+    if( item.iTopIndex > lastIndex - KMaxLastIndex )
+        {
+        item.iTopIndex = lastIndex - KMaxLastIndex;
+        }
+    if( item.iTopIndex < 0 )
+        {
+        item.iTopIndex = 0;
+        }
+
+    iListBox->View()->SetCurrentItemIndex( item.iIndex );
+    iListBox->View()->SetTopItemIndex( item.iTopIndex );
+    iListBox->DrawDeferred();
+    }
+
+// -----------------------------------------------------------------------------
+// CProfileIndexHandler::IndexAt
+// -----------------------------------------------------------------------------
+//
+TInt CProfileIndexHandler::IndexAt( TInt aIndex ) const
+    {
+    return iIndexArray[aIndex].iIndex;
+    }
+
+// -----------------------------------------------------------------------------
+// CProfileIndexHandler::TopIndexAt
+// -----------------------------------------------------------------------------
+//
+TInt CProfileIndexHandler::TopIndexAt( TInt aIndex ) const
+    {
+    return iIndexArray[aIndex].iTopIndex;
+    }
+
+// -----------------------------------------------------------------------------
+// CProfileIndexHandler::RemoveAndInsert
+// -----------------------------------------------------------------------------
+//
+TInt CProfileIndexHandler::RemoveAndInsert(
+    TInt aOldIndex, TInt aNewIndex, TInt aIndexValue, TInt aTopIndexValue )
+    {
+    TInt count( iIndexArray.Count() );
+    if( aOldIndex < 0 || aOldIndex >= count )
+        {
+        return KErrNotFound;
+        }
+    if( aNewIndex < 0 || aNewIndex > count )
+        {
+        return KErrArgument;
+        }
+    iIndexArray.Remove( aOldIndex );
+    TItem item = { aIndexValue, aTopIndexValue };
+    iIndexArray.Insert( item, aNewIndex );
+    return KErrNone;
+    }
+
+// -----------------------------------------------------------------------------
+// CProfileIndexHandler::SetListBox
+// -----------------------------------------------------------------------------
+//
+void CProfileIndexHandler::SetListBox( CEikListBox* aListBox )
+    {
+    iListBox = aListBox;
+    }
+
+// -----------------------------------------------------------------------------
+// CProfileIndexHandler::ReadIdArrayAndUpdateL
+// -----------------------------------------------------------------------------
+//
+TInt CProfileIndexHandler::ReadIdArrayAndUpdateL()
+    {
+    // Index of the profile before the engine rearranges the profiles.
+    TInt oldProfileIndex( iCurrentProfileIndex );
+    
+    // ID of the profile so that we can find it after the engine
+    // rearranges the profiles.
+    TInt profileId( iEngineHandler.IdForIndex( oldProfileIndex ) );
+    
+    // Store the indices for edited profile.
+    StoreIndices();
+    
+    TInt newItemIndex( IndexAt( oldProfileIndex ) );
+    TInt newTopItemIndex( TopIndexAt( oldProfileIndex ) );
+
+    // Refresh profile names. Order of the profiles may change.
+    iEngineHandler.ReadIdArrayL();
+
+    // Find out which of the profiles is now the edited profile
+    TInt newProfileIndex( iEngineHandler.IdArray()->FindById( profileId ) );
+
+    // Set it to current profile
+    SetCurrentProfileIndex( newProfileIndex );
+    
+    // Update indices
+    User::LeaveIfError( RemoveAndInsert( oldProfileIndex, newProfileIndex,
+        newItemIndex, newTopItemIndex ) );
+
+    return newProfileIndex;
+    }
+
+//  End of File