--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/viewframework/medialists/src/glxerrormanager.cpp Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,291 @@
+/*
+* Copyright (c) 2008-2009 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: Utility class to manage attribute retrieval errors
+*
+*/
+
+
+
+
+#include "glxerrormanager.h"
+
+//#include <glxerrors.h>
+
+#include "glxfetcherrorarray.h"
+#include "glxcachemanager.h"
+#include "glxmedialist.h"
+#include <glxtracer.h> // For Logs
+#include <glxlog.h> // For Logs
+
+/** Error attribute content ID */
+const TInt KGlxErrorContentId = 0x200071AC;
+const TMPXAttributeData KGlxMediaErrorArray = { KGlxErrorContentId, 0x01 }; // CGlxFetchErrorArray
+
+const TInt KGlxErrorTimeOut = -10033;
+
+// -----------------------------------------------------------------------------
+// Return errors
+// -----------------------------------------------------------------------------
+//
+inline CGlxFetchErrorArray* Errors( const CGlxMedia& aMedia )
+ {
+ TRACER("GlxErrorManager::Errors");
+
+ return const_cast<CGlxFetchErrorArray*>(
+ static_cast<const CGlxFetchErrorArray*>( aMedia.ValueCObject(
+ KGlxMediaErrorArray ) ) );
+ }
+
+// -----------------------------------------------------------------------------
+// SetAttributeErrorL
+// -----------------------------------------------------------------------------
+//
+void GlxErrorManager::SetAttributeErrorL(CGlxMedia* aItem, const RArray<TMPXAttribute>& aAttributes, TInt aError)
+ {
+ TRACER("GlxErrorManager::SetAttributeErrorL");
+
+ if ( aItem )
+ {
+ CGlxFetchErrorArray* errorArray = NULL;
+
+ if ( aItem->IsSupported(KGlxMediaErrorArray) )
+ {
+ const CGlxFetchErrorArray* existingArray = static_cast<const CGlxFetchErrorArray*>(aItem->ValueCObject(KGlxMediaErrorArray));
+
+ if ( existingArray )
+ {
+ errorArray = CGlxFetchErrorArray::NewLC(existingArray);
+ }
+ }
+
+ if ( !errorArray )
+ {
+ errorArray = new(ELeave) CGlxFetchErrorArray();
+ CleanupStack::PushL(errorArray);
+ }
+
+ TInt attrCount = aAttributes.Count();
+
+ for ( TInt attrIndex = 0; attrIndex < attrCount; attrIndex++ )
+ {
+ errorArray->AddErrorL(TGlxFetchError(aAttributes[attrIndex], aError));
+ }
+
+ aItem->SetCObjectValueL(KGlxMediaErrorArray, errorArray);
+
+ CleanupStack::Pop(errorArray);
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// HasAttributeErrorL
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TInt GlxErrorManager::HasAttributeErrorL(const CGlxMedia* aMedia,
+ const TMPXAttribute& aAttribute)
+ {
+ TRACER("GlxErrorManager::HasAttributeErrorL");
+
+ TInt retVal = KErrNone;
+
+ if ( aMedia )
+ {
+ const CGlxFetchErrorArray* errors = Errors( *aMedia );
+
+ if ( errors )
+ {
+ TInt index = errors->FindError(aAttribute);
+ if ( KErrNotFound != index )
+ {
+ TGlxFetchError error = errors->Error(index);
+ retVal = error.iError;
+
+ if ( IsExpired( error ) )
+ {
+ retVal = KErrNone;
+ }
+
+ if ( KErrNone != retVal )
+ {
+ if ( IsTemporaryError(retVal) )
+ {
+ // Inform cache manager that at least one temporary error still exists
+ CGlxCacheManager* cacheManager = CGlxCacheManager::InstanceL();
+ cacheManager->SetTemporaryErrorFlag();
+ cacheManager->Close();
+ }
+ }
+ }
+ }
+ }
+
+ return retVal;
+ }
+
+// -----------------------------------------------------------------------------
+// HasAttributeErrorL
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TInt GlxErrorManager::HasAttributeErrorL(const CGlxMedia* aMedia,
+ TInt aContentId)
+ {
+ TRACER("GlxErrorManager::HasAttributeErrorL");
+
+ TInt retVal = KErrNone;
+ if ( aMedia )
+ {
+ const CGlxFetchErrorArray* errors = Errors( *aMedia );
+
+ if ( errors )
+ {
+ TInt index = errors->FindError(aContentId);
+ if ( KErrNotFound != index )
+ {
+ TGlxFetchError error = errors->Error(index);
+ retVal = error.iError;
+
+ if ( IsExpired( error ) )
+ {
+ retVal = KGlxErrorTimeOut;
+ }
+
+ if ( KErrNone != retVal && KGlxErrorTimeOut != retVal)
+ {
+ if ( IsTemporaryError(retVal) )
+ {
+ // Inform cache manager that at least one temporary error still exists
+ CGlxCacheManager* cacheManager = CGlxCacheManager::InstanceL();
+ cacheManager->SetTemporaryErrorFlag();
+ cacheManager->Close();
+ }
+ }
+ }
+
+ }
+ }
+
+ return retVal;
+ }
+
+// -----------------------------------------------------------------------------
+// IsTemporaryError
+// -----------------------------------------------------------------------------
+//
+TBool GlxErrorManager::IsTemporaryError(TInt aErrorCode)
+ {
+ TRACER("GlxErrorManager::IsTemporaryError");
+ GLX_DEBUG2("GlxErrorManager::IsTemporaryError() aErrorCode=%d", aErrorCode);
+
+ /// @todo Implement this when list of temporary and permanent errors are known. Currently assume
+ /// all errors are temporary
+ switch ( aErrorCode )
+ {
+ case KErrArgument: // fallthrough
+ case KErrNotSupported: // fallthrough
+ case KErrNoMemory:
+ case KErrCorrupt:
+ // add other permanent error codes here
+ return EFalse;
+
+ default:
+ return ETrue;
+ };
+ }
+
+// -----------------------------------------------------------------------------
+// IsErrorStillVal
+// -----------------------------------------------------------------------------
+//
+TBool GlxErrorManager::IsExpired( const TGlxFetchError& aError )
+ {
+ TRACER("GlxErrorManager::IsExpired");
+
+ if ( IsTemporaryError(aError.iError) )
+ {
+ TTime now;
+ now.UniversalTime();
+
+ TTime errorTime(aError.iTimestamp);
+
+ if ( now - TTimeIntervalSeconds(KGlxTemporaryErrorValidityPeriodInSeconds) > errorTime )
+ {
+ return ETrue;
+ }
+ }
+
+ return EFalse;
+ }
+
+// -----------------------------------------------------------------------------
+// HasError
+// -----------------------------------------------------------------------------
+//
+TBool GlxErrorManager::HasError(const CGlxMedia* aMedia)
+ {
+ TRACER("GlxErrorManager::HasError");
+
+ if ( aMedia )
+ {
+ return ( Errors( *aMedia ) != NULL );
+ }
+
+ return EFalse;
+ }
+
+// -----------------------------------------------------------------------------
+// ClearExpiredAndUnusedErrorsL
+// -----------------------------------------------------------------------------
+//
+void GlxErrorManager::ClearExpiredAndUnusedErrorsL( CGlxMedia& aMedia,
+ const RArray<TMPXAttribute>& aAttributesInUse )
+ {
+ TRACER("GlxErrorManager::ClearExpiredAndUnusedErrorsL");
+
+ CGlxFetchErrorArray* errors = Errors( aMedia );
+
+ if ( errors )
+ {
+ // Iterate through the list of errors backwards, so that removal is more
+ // efficient, and loop control easier
+ for ( TInt i = errors->ErrorCount() - 1; i >= 0; i-- )
+ {
+ TGlxFetchError error = errors->Error( i );
+ // remove the error if it has expired, or if the attribute
+ // that the error is for is no longer in use
+ if ( IsExpired( error ) ||
+ KErrNotFound == aAttributesInUse.Find( error.iAttr, TMPXAttribute::Match ) )
+ {
+ errors->Remove( i );
+ }
+ }
+
+ // no further errors are remaining, so can remove the error array
+ // attribute from the media object
+ if ( errors->ErrorCount() == 0 )
+ {
+ aMedia.DeleteAttribute( KGlxMediaErrorArray );
+ }
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// Return error attribute's id
+// -----------------------------------------------------------------------------
+//
+TMPXAttribute GlxErrorManager::ErrorAttribute()
+ {
+ TRACER("GlxErrorManager::ErrorAttribute");
+
+ return KGlxMediaErrorArray;
+ }