diff -r 84d9eb65b26f -r 518b245aa84c messagingapp/msgui/msgaudiofetcher/inc/msgaudioselectionengine.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/messagingapp/msgui/msgaudiofetcher/inc/msgaudioselectionengine.h	Fri Jun 25 15:47:40 2010 +0530
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2010 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:
+ *     The header file for mde tone fetcher.
+ *
+ */
+#ifndef MSGAUDIOSELECTIONENGINE_H
+#define MSGAUDIOSELECTIONENGINE_H
+
+// SYSTEM INCLUDES
+#include <mdesession.h>
+#include <mdequery.h>
+#include <mdelogiccondition.h>
+#include <mdeconstants.h>
+#include <mdeobjectquery.h>
+#include <mdccommon.h>
+#include <mdeitem.h>
+#include <mdeobject.h>
+#include <e32base.h>
+#include <QObject>
+#include <QStringList>
+
+// FORWARD DECLARATIONS
+
+/**
+ *  This class is used for quering tones from mde.
+ */
+class MsgAudioSelectionEngine : public QObject,
+        public CBase,
+        public MMdESessionObserver,
+        public MMdEQueryObserver,
+        public MMdEObjectObserver,
+        public MMdEObjectPresentObserver
+{
+Q_OBJECT
+
+public:
+
+    enum TStorageType
+        {
+        EPhoneMemory = 0, ERomStorage, EMassStorage, EMemoryCard
+        };
+
+    enum TQueryAttribute
+        {
+        EAttrMediaType = 20, // integer
+        EAttrFileSize, // integer
+        EAttrStorageType, // integer
+        EAttrMediaFileId, // integer
+        EAttrFileName, // string
+        EAttrFullName, // string
+        EAttrSongName, // string
+        EAttrArtist, // string
+        EAttrAlbum, // string
+        EAttrGenre, // string
+        EAttrComposer
+        // string
+        };
+
+public:
+    MsgAudioSelectionEngine();
+    virtual ~MsgAudioSelectionEngine();
+    void CreateMetaDataSession();
+signals:
+    void mdeSessionOpened();
+    void mdeSessionError(int error);
+    void queryComplete(QStringList nameList, QStringList uriList);
+    void queryError(int error);
+    void notifyObjectChanged();
+
+public:
+    static CMdEPropertyDef& PropertyDefL(CMdESession* aSession, TInt aAttr);
+    void QueryTones();
+    void SetAttr(int attr, int value);
+
+private:
+    void LeaveIfSessionClosedL();
+    CMdEPropertyDef& PropertyDefL(TInt aAttr);
+    void QueryTonesL();
+    void HandleQueryCompletedL(CMdEQuery& aQuery, TInt aError);
+
+private:
+    // from MMdESessionObserver
+    void HandleSessionOpened(CMdESession& aSession, TInt aError);
+    void HandleSessionError(CMdESession& aSession, TInt aError);
+
+private:
+    // from MMdEQueryObserver (mdequery.h)
+    void HandleQueryNewResults(CMdEQuery& aQuery, TInt aFirstNewItemIndex,
+            TInt aNewItemCount);
+    void HandleQueryCompleted(CMdEQuery& aQuery, TInt aError);
+private:
+    // from MMdEObjectObserver
+    void HandleObjectNotification(CMdESession& aSession,
+            TObserverNotificationType aType,
+            const RArray<TItemId>& aObjectIdArray);
+
+private:
+    // from MMdEObjectPresentObserver
+    void HandleObjectPresentNotification(CMdESession& aSession,
+            TBool aPresent, const RArray<TItemId>& aObjectIdArray);
+    void AddObjectObserverL();
+private:
+
+
+    // session to metadata engine
+    CMdESession* iSession;
+
+    // metadata query
+    CMdEObjectQuery* iQuery;
+
+    // used for saving the quering result.
+    //both name and uri.
+    QStringList iNameList;
+    QStringList iUriList;
+
+    // is metadata session open
+    TBool iSessionOpen;
+
+    // max audio file file size
+    TInt iMaxFileSize;
+
+    // query error
+    TInt iQueryError;
+};
+#endif /* MSGAUDIOSELECTIONENGINE_H */
+