--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/serviceproviders/sapi_mediamanagement/mediamanagementservice/src/mgthumbobserver.cpp	Fri Jul 03 15:51:24 2009 +0100
@@ -0,0 +1,297 @@
+/*
+* Copyright (c) 2007-2007 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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:  This Class is observer for thumbnail generation
+*
+*/
+
+
+#include<e32std.h>
+
+#include<ThumbnailData.h>
+#include<FBS.H>
+#include"mgthumbobserver.h"
+#include"mgthumbnailobserver.h"
+
+
+const TInt KNulLen = 20;
+const TInt KZero = 0;
+// -----------------------------------------------------------------------------
+// CThumbnailObserver::NewL
+// Returns the instance of CThumbnailObserver.
+// -----------------------------------------------------------------------------
+CThumbnailObserver* CThumbnailObserver::NewL()
+    {
+    CThumbnailObserver* self = new ( ELeave )CThumbnailObserver();
+    CActiveScheduler::Add(self);
+    return self;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CThumbnailObserver::ThumbnailPreviewReady
+// This method is called when thumbnail generation operation completes
+// -----------------------------------------------------------------------------
+ void CThumbnailObserver::ThumbnailPreviewReady(MThumbnailData& aThumbnail, TThumbnailRequestId aId)
+    {
+    // No implementation
+
+
+
+    }
+
+// -----------------------------------------------------------------------------
+// CThumbnailObserver::ThumbnailPreviewReady
+// This method is called when thumbnail generation operation completes
+// -----------------------------------------------------------------------------
+void CThumbnailObserver::ThumbnailReady(TInt aError, MThumbnailData& aThumbnail, TThumbnailRequestId aId)
+    {
+    	
+   // Findingout the ThumbanilRequestInfo object
+    TInt pos = iThumbnailRequestArray.Count() - 1;
+    
+    TThumbnailRequestInfo obj;
+      for ( ; pos >= 0; pos-- )
+          {
+       
+          obj =  iThumbnailRequestArray[pos];
+          if(obj.iThumbnailRequestId == aId )
+              {
+              iThumbnailRequestArray.Remove(pos);
+              iThumbnailRequestArray.Compress();
+              
+              break;
+              
+              }
+
+          }   
+    
+
+    if( KErrNone == aError )
+        {
+  
+        // Getting Bitmap of thumbnail
+        CFbsBitmap* bitmap = aThumbnail.DetachBitmap();
+        
+           // Saving it to local path
+        bitmap->Save(*(obj.iThumbnailPath));
+        // calling observer with thumbanil path
+        obj.iObserver->ThumbnailReady(aError,*(obj.iThumbnailPath),obj.iTransactionId);
+	
+        delete bitmap;
+        }
+    else if (KErrNotFound == aError ){
+    
+        obj.iObserver->ThumbnailReady(KErrAlreadyExists,*(obj.iThumbnailPath),obj.iTransactionId);
+    
+        }
+    else
+        {
+     	
+        TBuf<KNulLen> buf;
+        buf.Append(KNullDesC);
+        obj.iObserver->ThumbnailReady(aError,buf,obj.iTransactionId);
+    
+        }
+   // Deleting the instance of ThumbanilRequestInfo
+    // We need to delete only iThumbnailPath and need to make iObserver as NULL
+    obj.iObserver = NULL;
+    
+    if(obj.iThumbnailPath)
+    	delete obj.iThumbnailPath;
+   
+}
+
+
+
+// -----------------------------------------------------------------------------
+// CThumbnailObserver::CThumbnailObserver
+// C++ Constructor
+// -----------------------------------------------------------------------------
+CThumbnailObserver::CThumbnailObserver():CActive(EPriorityHigh),iThumbnailManager(NULL)
+    {
+    
+    }
+
+// -----------------------------------------------------------------------------
+// CThumbnailObserver::~CThumbnailObserver
+// Destructor
+// -----------------------------------------------------------------------------
+CThumbnailObserver::~CThumbnailObserver()
+    {
+   
+     // logic for cleaning up the array
+    
+    TInt pos = iThumbnailRequestArray.Count() - 1;
+    TThumbnailRequestInfo obj;
+     for ( ; pos >= 0; pos-- )
+         {
+         obj = iThumbnailRequestArray[pos];
+         
+         //calling Cancel for the request
+         iThumbnailRequestArray.Remove(pos);
+         iThumbnailRequestArray.Compress();
+         if(iThumbnailManager)
+         		{
+         			TInt ret = iThumbnailManager->CancelRequest(obj.iThumbnailRequestId);
+         	
+         // Calling users callback for cancellig request
+		         if(obj.iObserver)
+		         		{
+         	
+		        	 	obj.iObserver->ThumbnailRequestCancel(ret,obj.iTransactionId);
+		       			}
+						
+				}
+         // Deleting the instance of ThumbanilRequestInfo
+           // We need to delete only iThumbnailPath and need to make iObserver as NULL
+         obj.iObserver = NULL;
+         		
+         	if(obj.iThumbnailPath)	
+          		{
+				delete obj.iThumbnailPath;
+				}
+           
+    
+          
+             }
+     iThumbnailRequestArray.Close();
+    
+     iThumbnailManager = NULL;
+    
+    }
+// -----------------------------------------------------------------------------
+// CThumbnailObserver::Cancel
+// Cancels the request of thumbnail generation
+// -----------------------------------------------------------------------------
+TInt CThumbnailObserver::Cancel(TInt32 aTransactionID)
+    {
+    
+    // Search for TThumbnailRequest corresponding to thumbanil request
+    
+    TInt pos = iThumbnailRequestArray.Count() - 1;
+    TThumbnailRequestInfo obj;
+     for ( ; pos >= 0; pos-- )
+         {
+         obj = iThumbnailRequestArray[pos];
+                 
+         if( obj.iTransactionId == aTransactionID )
+             {
+             iThumbnailRequestArray.Remove(pos);
+             iThumbnailRequestArray.Compress();
+             TInt ret = iThumbnailManager->CancelRequest(obj.iThumbnailRequestId);
+             
+              obj.iObserver->ThumbnailRequestCancel(ret,obj.iTransactionId);   
+              
+              // Deleting the instance of ThumbanilRequestInfo
+               // We need to delete only iThumbnailPath and need to make iObserver as NULL
+                  obj.iObserver = NULL;
+
+               if(obj.iThumbnailPath)   	
+               		{
+					delete obj.iThumbnailPath;
+					}
+              
+             return ret;
+             }
+         }
+     return KErrNotFound;
+    }
+
+// -----------------------------------------------------------------------------
+// CThumbnailObserver::AddToObserver
+// Add ThumbnailRequestInfo to observer
+// -----------------------------------------------------------------------------
+void CThumbnailObserver::AddToObserverL(MThumbnailObserver* aObserver,TInt32 aTransactionID ,TDesC& aThumbnailPath , TThumbnailRequestId aThumbnailRequestId)
+    {
+    
+    
+    TThumbnailRequestInfo thumbnailRequestInfo ;
+ 
+    thumbnailRequestInfo.iObserver = aObserver;
+    thumbnailRequestInfo.iThumbnailPath = aThumbnailPath.Alloc();
+    thumbnailRequestInfo.iThumbnailRequestId = aThumbnailRequestId;
+    thumbnailRequestInfo.iTransactionId = aTransactionID;
+
+      iThumbnailRequestArray.Append( thumbnailRequestInfo ) ;
+ 
+    
+    }
+// -----------------------------------------------------------------------------
+// CThumbnailObserver::ThumbnailAlreadyExists
+// 
+// -----------------------------------------------------------------------------
+void CThumbnailObserver::ThumbnailAlreadyExists()
+    {
+ 
+    iStatus = KRequestPending;
+    SetActive();
+    TRequestStatus* temp = &iStatus;
+    User::RequestComplete( temp, KErrNone );
+    }
+
+// -----------------------------------------------------------------------------
+// CThumbnailObserver::SetThumbnailMangager
+// Sets the thumbnail manager instance
+// -----------------------------------------------------------------------------
+
+void CThumbnailObserver:: SetThumbnailMangager(CThumbnailManager* aThumbnailManager)
+{
+iThumbnailManager = aThumbnailManager;
+
+}
+// -----------------------------------------------------------------------------
+// CThumbnailObserver::RunL
+// 
+// -----------------------------------------------------------------------------
+   
+void CThumbnailObserver::RunL()
+    {
+    // calling callback method
+
+    TInt pos = iThumbnailRequestArray.Count() - 1;
+     TThumbnailRequestInfo obj;
+      for ( ; pos >= 0; pos-- )
+          {
+          obj = iThumbnailRequestArray[pos];
+                  
+          if( obj.iThumbnailRequestId == KZero )
+              {
+              iThumbnailRequestArray.Remove(pos);
+              iThumbnailRequestArray.Compress();
+              
+              
+               obj.iObserver->ThumbnailReady(KErrAlreadyExists ,*obj.iThumbnailPath,obj.iTransactionId);   
+               
+               // Deleting the instance of ThumbanilRequestInfo
+                // We need to delete only iThumbnailPath and need to make iObserver as NULL
+                   obj.iObserver = NULL;
+			   if(obj.iThumbnailPath)
+		           {
+				    delete obj.iThumbnailPath;
+					}
+					
+              }
+          }
+      
+              
+  
+    }
+// -----------------------------------------------------------------------------
+// CThumbnailObserver::DoCancel
+// 
+// -----------------------------------------------------------------------------
+void CThumbnailObserver::DoCancel()
+    {
+    
+    }