diff -r a3a1ae9acec6 -r da5135c61bad meetingrequest/mrcmailremoteattachmentplugin/src/cmrcmailremoteattachmentplugindownloader.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/meetingrequest/mrcmailremoteattachmentplugin/src/cmrcmailremoteattachmentplugindownloader.cpp	Wed Mar 31 21:08:33 2010 +0300
@@ -0,0 +1,382 @@
+/*
+ * Copyright (c) 2007-2009 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:
+ *
+ */
+
+#include "cmrcmailremoteattachmentplugindownloader.h"
+#include "mcalremoteattachmentoperationobserver.h"
+#include "ccalremoteattachment.h"
+#include "esmrhelper.h"
+#include "cfsmailclient.h"
+#include "cfsmailmessage.h"
+
+#include <coemain.h>
+
+#include "emailtrace.h"
+
+// Unnamed namespace for local definitions
+namespace { // codescanner::namespace
+
+// Preferred byte count definition
+const TInt KPreferredByteCount(0);
+
+// Percentage for progress calculation
+const TInt KPercentage( 100 );
+
+// Literal for temporary path
+_LIT( KTempPath, "temp\\" );
+
+}
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::CMRCmailRemoteAttachmentDownloader
+// ---------------------------------------------------------------------------
+//
+CMRCmailRemoteAttachmentDownloader::CMRCmailRemoteAttachmentDownloader(
+        CFSMailClient& aMailClient,
+        MCalRemoteAttachmentOperationObserver& aObserver )
+:   CActive( EPriorityStandard ),
+    iMailClient( aMailClient ),
+    iObserver( aObserver )
+    {
+    CActiveScheduler::Add( this );
+    FUNC_LOG;
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::CMRCmailRemoteAttachmentDownloader
+// ---------------------------------------------------------------------------
+//
+CMRCmailRemoteAttachmentDownloader::~CMRCmailRemoteAttachmentDownloader()
+    {
+    FUNC_LOG;
+
+    if( IsActive() )
+    	{
+		Cancel();
+    	}
+    else
+    	{
+		DoCancel();
+    	}
+    delete iMailMessage;
+    delete iUri;
+    iAttachmentFile.Close();
+    delete iRemoteAttachment;
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::CMRCmailRemoteAttachmentDownloader
+// ---------------------------------------------------------------------------
+//
+CMRCmailRemoteAttachmentDownloader*
+        CMRCmailRemoteAttachmentDownloader::NewL(
+                CFSMailClient& aMailClient,
+                MCalRemoteAttachmentOperationObserver& aObserver,
+                const TDesC& aUri )
+    {
+    FUNC_LOG;
+    CMRCmailRemoteAttachmentDownloader* self =
+            new (ELeave) CMRCmailRemoteAttachmentDownloader(
+                    aMailClient,
+                    aObserver );
+
+    CleanupStack::PushL( self );
+    self->ConstructL( aUri );
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::CMRCmailRemoteAttachmentDownloader
+// ---------------------------------------------------------------------------
+//
+void CMRCmailRemoteAttachmentDownloader::ConstructL(
+        const TDesC& aUri )
+    {
+    FUNC_LOG;
+    iUri = aUri.AllocL();
+
+    TInt error = iMailIdParser.Parse( *iUri );
+    User::LeaveIfError( error );
+
+    // Fetch message structure and construct attachment information
+    iMailMessage = iMailClient.GetMessageByUidL(
+            iMailIdParser.iMailboxUid,
+            iMailIdParser.iFolderUid,
+            iMailIdParser.iMessageUid,
+            EFSMsgDataStructure );
+
+    CFSMailMessagePart* attachment =
+        iMailMessage->ChildPartL( iMailIdParser.iMessagepartUid );
+    CleanupStack::PushL( attachment );
+
+    TPtrC attachmentName( attachment->AttachmentNameL() );
+    TInt attachmentSize( attachment->ContentSize() );
+
+    MCalRemoteAttachment::TCalRemoteAttachmentState attachmentState(
+            MCalRemoteAttachment::EAttachmentStateNotDownloaded );
+
+    if ( EFSFull == attachment->FetchLoadState() )
+        {
+        attachmentState = MCalRemoteAttachment::EAttachmentStateDownloaded;
+        }
+
+    iRemoteAttachment = CCalRemoteAttachment::NewL(
+                                aUri,
+                                attachmentName,
+                                attachmentSize,
+                                attachmentState );
+
+    CleanupStack::PopAndDestroy( attachment );
+
+    // Trigger asynchronous request
+    IssueRequest();
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::DoCancel
+// ---------------------------------------------------------------------------
+//
+void CMRCmailRemoteAttachmentDownloader::DoCancel()
+    {
+    FUNC_LOG;
+
+    TRAP_IGNORE( DoCancelL() );
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::RunL
+// ---------------------------------------------------------------------------
+//
+void CMRCmailRemoteAttachmentDownloader::RunL()
+    {
+    FUNC_LOG;
+
+    // We first check whether attachment is already downloaded to device or not
+    CFSMailMessagePart* attachment =
+        iMailMessage->ChildPartL( iMailIdParser.iMessagepartUid );
+    CleanupStack::PushL( attachment );
+
+    if ( EFSFull == attachment->FetchLoadState() )
+        {
+        // Attachment is fecthed to device --> Trigger completion
+        NotifyCompletionL( *attachment );
+        }
+    else
+        {
+        // Attachment is not fetched --> Start fetching attachment
+        iFSMailOperationId =
+                attachment->FetchMessagePartL(
+                            iMailIdParser.iMessagepartUid,
+                            *this,
+                            KPreferredByteCount );
+        }
+
+    CleanupStack::PopAndDestroy( attachment );
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::RunError
+// ---------------------------------------------------------------------------
+//
+TInt CMRCmailRemoteAttachmentDownloader::RunError( TInt aError )
+    {
+    FUNC_LOG;
+
+    NotifyError( aError );
+
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::CMRCmailRemoteAttachmentDownloader
+// ---------------------------------------------------------------------------
+//
+TInt CMRCmailRemoteAttachmentDownloader::Progress() const
+    {
+    FUNC_LOG;
+
+    TInt progress( 0 );
+    TRAP_IGNORE( progress = ProgressL() );
+    return progress;
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::CMRCmailRemoteAttachmentDownloader
+// ---------------------------------------------------------------------------
+//
+const MCalRemoteAttachment&
+        CMRCmailRemoteAttachmentDownloader::AttachmentInformation() const
+    {
+    FUNC_LOG;
+    return *iRemoteAttachment;
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::CMRCmailRemoteAttachmentDownloader
+// ---------------------------------------------------------------------------
+//
+void CMRCmailRemoteAttachmentDownloader::RequestResponseL(
+        TFSProgress aEvent,
+        TInt aRequestId )
+    {
+    FUNC_LOG;
+
+    // Make sure that correct notification is received from mail framework
+    ASSERT( aRequestId == iFSMailOperationId );
+
+    if ( aRequestId == iFSMailOperationId )
+        {
+        // Fetching message structure
+        switch ( aEvent.iProgressStatus )
+            {
+            case TFSProgress::EFSStatus_RequestComplete:
+                {
+                // Fetch attachment part and notify completion
+                CFSMailMessagePart* attachment =
+                    iMailMessage->ChildPartL( iMailIdParser.iMessagepartUid );
+                CleanupStack::PushL( attachment );
+
+                NotifyCompletionL( *attachment );
+
+                CleanupStack::PopAndDestroy( attachment );
+                }
+                break;
+
+            case TFSProgress::EFSStatus_Status:
+                {
+                // Notify progress about downloading
+                TInt progress = ( KPercentage * aEvent.iCounter ) / aEvent.iMaxCount;
+                iObserver.Progress( this, progress );
+                }
+                break;
+
+            case TFSProgress::EFSStatus_RequestCancelled:
+                {
+                // Error occured during fetch operation
+                NotifyError( KErrCancel );
+                }
+                break;
+            default:
+                break;
+            }
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::CMRCmailRemoteAttachmentDownloader
+// ---------------------------------------------------------------------------
+//
+void CMRCmailRemoteAttachmentDownloader::IssueRequest()
+    {
+    FUNC_LOG;
+
+    SetActive();
+    TRequestStatus* status = &iStatus;
+    User::RequestComplete( status, KErrNone );
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::CMRCmailRemoteAttachmentDownloader
+// ---------------------------------------------------------------------------
+//
+void CMRCmailRemoteAttachmentDownloader::NotifyCompletionL(
+        CFSMailMessagePart& aAttachment )
+    {
+    FUNC_LOG;
+
+    // Make sure that file server can share files between processes
+    RFs& fs = CCoeEnv::Static()->FsSession();
+    fs.ShareProtected();
+
+    // Construct filename for attachment
+    TFileName fileName( KTempPath );
+    fileName.Append( iRemoteAttachment->AttachmentLabel() );
+    User::LeaveIfError(
+            ESMRHelper::CreateAndAppendOthersDirToFileName( fileName ) );
+
+    // Copy attachment from mail storage to file system
+    aAttachment.CopyContentFileL( fileName );
+
+    // Open file handle to attachment
+    User::LeaveIfError( iAttachmentFile.Open(
+                        fs,
+                        fileName,
+                        EFileRead | EFileShareReadersOnly ) );
+
+    // Notify observer about completion
+    iRemoteAttachment->SetAttachmentState(
+            MCalRemoteAttachment::EAttachmentStateDownloaded );
+
+    iObserver.OperationCompleted( this, iAttachmentFile );
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::NotifyError
+// ---------------------------------------------------------------------------
+//
+void CMRCmailRemoteAttachmentDownloader::NotifyError( TInt aError )
+    {
+    FUNC_LOG;
+    iObserver.OperationError( this, aError );
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::ProgressL
+// ---------------------------------------------------------------------------
+//
+TInt CMRCmailRemoteAttachmentDownloader::ProgressL() const
+    {
+    FUNC_LOG;
+
+    TInt progress( 0 );
+
+    CFSMailMessagePart* attachment =
+        iMailMessage->ChildPartL( iMailIdParser.iMessagepartUid );
+    CleanupStack::PushL( attachment );
+
+    TInt fetchedContent( attachment->FetchedContentSize() );
+    TInt contentSize( attachment->ContentSize() );
+    progress = ( KPercentage * fetchedContent ) / contentSize;
+
+    CleanupStack::PopAndDestroy( attachment );
+
+    return progress;
+    }
+
+// ---------------------------------------------------------------------------
+// CMRCmailRemoteAttachmentDownloader::DoCancelL
+// ---------------------------------------------------------------------------
+//
+void CMRCmailRemoteAttachmentDownloader::DoCancelL()
+    {
+    FUNC_LOG;
+
+    CFSMailMessagePart* attachment =
+        iMailMessage->ChildPartL( iMailIdParser.iMessagepartUid );
+    CleanupStack::PushL( attachment );
+
+    if ( EFSFull != attachment->FetchLoadState() )
+        {
+        iMailClient.CancelL( iFSMailOperationId );
+        }
+
+    CleanupStack::PopAndDestroy( attachment );
+    }
+
+// EOF