--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/landmarksui/uicontrols/src/CLmkSelectorCache.cpp	Tue Feb 02 00:16:03 2010 +0200
@@ -0,0 +1,188 @@
+/*
+* 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:    LandmarksUi Content File -
+*
+*/
+
+
+
+
+
+
+
+
+// INCLUDE FILES
+#include "CLmkSelectorCache.h"
+#include "CLmkUiItemBase.h"
+#include "CLmkListProviderBase.h"
+#include <lmkerrors.h>
+
+
+// CONSTANTS
+/// Unnamed namespace for local definitions
+namespace {
+
+const TInt KMaxCacheArraySize( 10 );
+#if defined(_DEBUG)
+_LIT( KPanicMsg, "CLmkSelectorCache" );
+
+void Panic( TPanicCode aReason )
+    {
+    User::Panic( KPanicMsg, aReason );
+    }
+#endif
+}  // namespace
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CLmkSelectorCache::CLmkSelectorCache
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CLmkSelectorCache::CLmkSelectorCache( CLmkListProviderBase& aListProvider )
+    : iListProvider( aListProvider )
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CLmkSelectorCache::ConstructL
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+//
+void CLmkSelectorCache::ConstructL()
+    {
+    iListProvider.AddObserverL( *this );
+    }
+
+// -----------------------------------------------------------------------------
+// CLmkSelectorCache::NewL
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CLmkSelectorCache* CLmkSelectorCache::NewL(
+    CLmkListProviderBase& aListProvider )
+    {
+    CLmkSelectorCache* self = new( ELeave ) CLmkSelectorCache( aListProvider );
+
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop();
+
+    return self;
+    }
+
+// ----------------------------------------------------
+// CLmkSelectorCache::~CLmkSelectorCache
+// ----------------------------------------------------
+//
+CLmkSelectorCache::~CLmkSelectorCache()
+    {
+    iListProvider.RemoveObserver(*this);
+    iItemList.ResetAndDestroy();
+    iItemList.Close();
+    }
+
+// -----------------------------------------------------------------------------
+// CLmkSelectorCache::ItemAtL
+// Cache takes the ownership of item, therefore it receives a pointer,
+// but passes a reference to the lb model
+// -----------------------------------------------------------------------------
+//
+CLmkUiItemBase& CLmkSelectorCache::ItemAtL( TInt aIndex )
+    {
+    __ASSERT_DEBUG( aIndex >= 0, Panic( KLmkPanicInvalidIndex ) );
+    TInt count = iItemList.Count();
+    for ( TInt i( 0 ); i < count; ++i )
+        {
+        if ( aIndex == iItemList[i]->iIndex )
+            {
+            CLinkedItem* tmp = iItemList[i];
+            CleanupStack::PushL( tmp );
+            iItemList.Remove( i );
+            User::LeaveIfError( iItemList.Insert( tmp, 0 ) );
+            CleanupStack::Pop( tmp );
+            return *(iItemList[0]->iPtr);
+            }
+        }
+    __ASSERT_DEBUG( iListProvider.ItemCount() > aIndex ,
+                                Panic(KLmkPanicInvalidIndex) );
+    CLinkedItem* tmp = new(ELeave) CLinkedItem();
+    CleanupStack::PushL( tmp );
+    tmp->iIndex = aIndex;
+    tmp->iPtr = iListProvider.ItemAtL( aIndex );
+    User::LeaveIfError( iItemList.Insert( tmp, 0 ) );
+    CleanupStack::Pop(); // tmp
+
+    if ( iItemList.Count() > KMaxCacheArraySize )
+        {
+        delete iItemList[KMaxCacheArraySize];
+        iItemList.Remove( KMaxCacheArraySize );
+        }
+    return *( iItemList[0]->iPtr );
+    }
+
+// -----------------------------------------------------------------------------
+// CLmkSelectorCache::ItemCount
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+TInt CLmkSelectorCache::ItemCount() const
+    {
+    // dummy implementation:
+    return iListProvider.ItemCount();
+    }
+
+// -----------------------------------------------------------------------------
+// CLmkSelectorCache::HandleListProviderEventL
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CLmkSelectorCache::HandleListProviderEvent(
+    TLmkListProviderEventType /*aEvent*/ )
+    {
+    iItemList.ResetAndDestroy();
+    }
+
+// ----------------------------------------------------
+// CLmkSelectorCache::HandleListProviderError
+// ----------------------------------------------------
+//
+void CLmkSelectorCache::HandleListProviderError( TInt /*aError*/ )
+    {
+    iItemList.ResetAndDestroy();
+    }
+
+// ----------------------------------------------------
+// CLmkSelectorCache::CLinkedItem
+// ----------------------------------------------------
+//
+CLmkSelectorCache::CLinkedItem::CLinkedItem()
+    {
+    }
+
+// ----------------------------------------------------
+// CLmkSelectorCache::~CLinkedItem
+// ----------------------------------------------------
+//
+CLmkSelectorCache::CLinkedItem::~CLinkedItem()
+    {
+    delete this->iPtr;
+    }
+
+
+//  End of File