--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/provider/server/src/ncdnodescreenshotimpl.cpp Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,387 @@
+/*
+* Copyright (c) 2006 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: Implements CNcdNodeScreenshot class
+*
+*/
+
+
+#include "ncdnodescreenshotimpl.h"
+#include "catalogssession.h"
+#include "catalogsbasemessage.h"
+#include "ncdnodemanager.h"
+#include "ncdnodemetadataimpl.h"
+#include "ncdnodeidentifier.h"
+#include "ncdnodefunctionids.h"
+#include "ncdnodeclassids.h"
+#include "catalogsconstants.h"
+#include "ncd_pp_dataentity.h"
+#include "ncd_pp_downloadimpl.h"
+#include "ncd_cp_query.h"
+#include "catalogsutils.h"
+#include "catalogsdebug.h"
+#include "ncderrors.h"
+
+
+CNcdNodeScreenshot::CNcdNodeScreenshot(
+ NcdNodeClassIds::TNcdNodeClassId aClassId,
+ CNcdNodeManager& aNodeManager,
+ const CNcdNodeMetaData& aParentMetaData )
+: CNcdCommunicable(),
+ iClassId( aClassId ),
+ iNodeManager( aNodeManager ),
+ iParentMetaData( aParentMetaData )
+ {
+ }
+
+void CNcdNodeScreenshot::ConstructL()
+ {
+ }
+
+
+CNcdNodeScreenshot* CNcdNodeScreenshot::NewL(
+ CNcdNodeManager& aNodeManager,
+ const CNcdNodeMetaData& aParentMetaData )
+ {
+ CNcdNodeScreenshot* self =
+ CNcdNodeScreenshot::NewLC( aNodeManager, aParentMetaData );
+ CleanupStack::Pop( self );
+ return self;
+ }
+
+CNcdNodeScreenshot* CNcdNodeScreenshot::NewLC(
+ CNcdNodeManager& aNodeManager,
+ const CNcdNodeMetaData& aParentMetaData )
+ {
+ CNcdNodeScreenshot* self =
+ new( ELeave ) CNcdNodeScreenshot(
+ NcdNodeClassIds::ENcdNodeScreenshotClassId,
+ aNodeManager,
+ aParentMetaData );
+ CleanupClosePushL( *self );
+ self->ConstructL();
+ return self;
+ }
+
+
+CNcdNodeScreenshot::~CNcdNodeScreenshot()
+ {
+ DLTRACEIN((""));
+
+ // Delete member variables here
+
+ iScreenshotDownload.ResetAndDestroy();
+
+ DLTRACEOUT((""));
+ }
+
+NcdNodeClassIds::TNcdNodeClassId CNcdNodeScreenshot::ClassId() const
+ {
+ return iClassId;
+ }
+
+TInt CNcdNodeScreenshot::ScreenshotDownloadCount() const
+ {
+ return iScreenshotDownload.Count();
+ }
+
+const TDesC&
+ CNcdNodeScreenshot::ScreenshotDownloadUri( TInt aIndex ) const
+ {
+ return iScreenshotDownload[aIndex]->Key();
+ }
+
+// Internalization from the protocol
+
+void CNcdNodeScreenshot::InternalizeL( MNcdPreminetProtocolDataEntity& aData )
+ {
+ DLTRACEIN((""));
+
+ iScreenshotDownload.ResetAndDestroy();
+
+ for ( TInt i = 0; i < aData.ScreenshotCount(); i++ )
+ {
+ CNcdKeyValuePair* download = CNcdKeyValuePair::NewLC(
+ aData.ScreenshotL( i ).Uri(),
+ aData.ScreenshotL( i ).Mime() );
+
+ DLINFO(( _L("Screenshot URI: %S, mime: %S"),
+ &download->Key(),
+ &download->Value() ));
+
+ iScreenshotDownload.AppendL( download );
+ CleanupStack::Pop( download );
+ }
+
+ DLTRACEOUT((""));
+ }
+
+
+// Internalization from and externalization to the database
+
+void CNcdNodeScreenshot::ExternalizeL( RWriteStream& aStream )
+ {
+ DLTRACEIN((""));
+
+ // Set all the membervariable values to the stream. So,
+ // that the stream may be used later to create a new
+ // object.
+
+ // First insert data that the creator of this class object will use to
+ // create this class object. Class id informs what class object
+ // will be created.
+
+ aStream.WriteInt32L( ClassId() );
+
+
+ // Write the data that will be used when internalize function
+ // is called. catalogsutils.h contains good internalize and
+ // externalize functions.
+ // Make sure that this matches to the order that is used
+ // when this stream is internalized.
+
+ TInt count = iScreenshotDownload.Count();
+ aStream.WriteInt32L( count );
+
+ DLTRACE(("Externalizing %d screenshot URIs and mimes", count ));
+ for ( TInt i = 0; i < count; ++i )
+ {
+ iScreenshotDownload[i]->ExternalizeL( aStream );
+ }
+
+ DLTRACEOUT((""));
+ }
+
+
+void CNcdNodeScreenshot::InternalizeL( RReadStream& aStream )
+ {
+ DLTRACEIN((""));
+
+ // Read the class id first because it is set to the stream in internalize
+ // function and it is not read from the stream anywhere else.
+ TInt classId( aStream.ReadInt32L() );
+ if ( classId != ClassId() )
+ {
+ DLERROR(("Wrong class id"));
+ DASSERT( EFalse );
+ // Leave because the stream does not match this class object
+ User::Leave( KErrCorrupt );
+ }
+
+ TInt count = aStream.ReadInt32L();
+ DLTRACE(("Internalizing %d screenshot URIs and mimes", count ));
+
+ iScreenshotDownload.ResetAndDestroy();
+ iScreenshotDownload.ReserveL( count );
+
+ while ( count-- )
+ {
+ CNcdKeyValuePair* screenshot = CNcdKeyValuePair::NewLC( aStream );
+ iScreenshotDownload.Append( screenshot );
+ CleanupStack::Pop( screenshot );
+ }
+
+ DLTRACEOUT((""));
+ }
+
+
+
+void CNcdNodeScreenshot::ReceiveMessage( MCatalogsBaseMessage* aMessage,
+ TInt aFunctionNumber )
+ {
+ DLTRACEIN((""));
+
+ DASSERT( aMessage );
+
+ // Now, we can be sure that rest of the time iMessage exists.
+ // This member variable is set for the CounterPartLost function.
+ iMessage = aMessage;
+
+ TInt trapError( KErrNone );
+
+ // Check which function is called by the proxy side object.
+ // Function number are located in ncdnodefunctinoids.h file.
+ switch( aFunctionNumber )
+ {
+ case NcdNodeFunctionIds::ENcdInternalize:
+ // Internalize the proxy side according to the data
+ // of this object.
+ TRAP( trapError, InternalizeRequestL( *aMessage ) );
+ break;
+
+ case NcdNodeFunctionIds::ENcdScreenshotData:
+ // Proxy side requested screenshot data.
+ TRAP( trapError, ScreenshotDataRequestL( *aMessage ) );
+ break;
+
+ case NcdNodeFunctionIds::ENcdRelease:
+ // The proxy does not want to use this object anymore.
+ // So, release the handle from the session.
+ ReleaseRequest( *aMessage );
+ break;
+
+ default:
+ DLERROR(("Unidentified function request"));
+ DASSERT( EFalse );
+ break;
+ }
+
+ if ( trapError != KErrNone )
+ {
+ // Because something went wrong, the complete has not been
+ // yet called for the message.
+ // So, inform the client about the error if the
+ // message is still available.
+ aMessage->CompleteAndRelease( trapError );
+ }
+
+ // Because the message should not be used after this, set it NULL.
+ // So, CounterPartLost function will know that no messages are
+ // waiting the response at the moment.
+ iMessage = NULL;
+
+ DLTRACEOUT((""));
+ }
+
+void CNcdNodeScreenshot::CounterPartLost( const MCatalogsSession& aSession )
+ {
+ // This function may be called whenever -- when the message is waiting
+ // response or when the message does not exist.
+ // iMessage may be NULL here, because in the end of the
+ // ReceiveMessage it is set to NULL. The life time of the message
+ // ends shortly after CompleteAndRelease is called.
+ if ( iMessage != NULL )
+ {
+ iMessage->CounterPartLost( aSession );
+ }
+ }
+
+
+void CNcdNodeScreenshot::InternalizeRequestL( MCatalogsBaseMessage& aMessage )
+ {
+ DLTRACEIN((""));
+
+ CBufBase* buf = CBufFlat::NewL( KBufExpandSize );
+ CleanupStack::PushL( buf );
+
+ RBufWriteStream stream( *buf );
+ CleanupClosePushL( stream );
+
+
+ // Include all the necessary node data to the stream
+ ExternalizeDataForRequestL( stream );
+
+
+ // Commits data to the stream when closing.
+ CleanupStack::PopAndDestroy( &stream );
+
+
+ // If this leaves, ReceiveMessage will complete the message.
+ // NOTE: that here we expect that the buffer contains at least
+ // some data. So, make sure that ExternalizeDataForRequestL inserts
+ // something to the buffer.
+ aMessage.CompleteAndReleaseL( buf->Ptr( 0 ), KErrNone );
+
+
+ DLTRACE(("Deleting the buf"));
+ CleanupStack::PopAndDestroy( buf );
+
+ DLTRACEOUT((""));
+ }
+
+
+void CNcdNodeScreenshot::ExternalizeDataForRequestL( RWriteStream& aStream )
+ {
+ DLTRACEIN((""));
+
+ if ( IsObsolete() )
+ {
+ DLINFO(("Set as obsolete. This means that server has removed the object."));
+ User::Leave( KNcdErrorObsolete );
+ }
+
+ // Make sure that the id is internalized correctly in the proxy side.
+ aStream.WriteInt32L( ClassId() );
+
+ // Add additional content to the stream.
+ // Make sure that this matches to the order that is used in the proxy
+ // side when this stream is internalized.
+ // NOTE: Be careful with the 8- and 16-bit descriptors. Remember to check
+ // if the proxy wants the data in 16 or 8 bits?
+
+ TInt count = iScreenshotDownload.Count();
+
+ aStream.WriteInt32L( count );
+
+ for ( TInt i = 0; i < count; i++ )
+ {
+ ExternalizeDesL( iScreenshotDownload[i]->Value(), aStream );
+ }
+
+ DLTRACEOUT((""));
+ }
+
+
+void CNcdNodeScreenshot::ScreenshotDataRequestL( MCatalogsBaseMessage& aMessage )
+ {
+ DLTRACEIN((""));
+
+ // If this leaves, ReceiveMessage will complete the message.
+
+ TInt inputLength = aMessage.InputLength();
+ User::LeaveIfError( inputLength );
+
+ HBufC8* data = HBufC8::NewLC( inputLength );
+ TPtr8 ptr = data->Des();
+ User::LeaveIfError( aMessage.ReadInput( ptr ) );
+
+ TInt index = Des8ToInt( *data );
+
+ CleanupStack::PopAndDestroy( data );
+
+ CNcdNodeIdentifier* shotIdentifier =
+ CNcdNodeIdentifier::NewLC( iParentMetaData.Identifier().NodeNameSpace(),
+ iScreenshotDownload[index]->Key(),
+ iScreenshotDownload[index]->Key(),
+ iParentMetaData.Identifier().ClientUid() );
+ HBufC8* screenshot = iNodeManager.DbScreenshotDataLC( *shotIdentifier );
+
+ aMessage.CompleteAndReleaseL( *screenshot, KErrNone );
+
+ CleanupStack::PopAndDestroy( screenshot );
+ CleanupStack::PopAndDestroy( shotIdentifier );
+
+ DLTRACEOUT((""));
+ }
+
+
+void CNcdNodeScreenshot::ReleaseRequest( MCatalogsBaseMessage& aMessage ) const
+ {
+ DLTRACEIN((""));
+
+ // Decrease the reference count for this object.
+ // When the reference count reaches zero, this object will be destroyed
+ // and removed from the session.
+ MCatalogsSession& requestSession( aMessage.Session() );
+ TInt handle( aMessage.Handle() );
+
+ // Send complete information back to proxy.
+ aMessage.CompleteAndRelease( KErrNone );
+
+ // Remove this object from the session.
+ requestSession.RemoveObject( handle );
+
+ DLTRACEOUT((""));
+ }
+
+