menucontentsrv/srvinc/mcschildrenscanner.h
changeset 0 79c6a41cd166
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/menucontentsrv/srvinc/mcschildrenscanner.h	Thu Dec 17 08:54:17 2009 +0200
@@ -0,0 +1,144 @@
+/*
+* Copyright (c) 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:
+*
+*/
+#ifndef MCSCHILDRENSCANNER_H_
+#define MCSCHILDRENSCANNER_H_
+
+
+#include <e32base.h>
+#include "menuengoperation.h"
+#include "mcsmenuitem.h"
+
+class CMenuSrvEng;
+
+/**
+ * Interface for updating Now Playing entry after Publish&Subscribe events.
+ *
+ * @since S60 v3.2
+ */
+class MMcsChildrenScanner
+    {
+    
+public:
+    virtual void HandleChildrenEvent(TInt aId, TUint oldCount, TUint newCount) = 0;
+    };
+
+
+/**
+ *  Children Scanner Active Object.
+ *  @lib mcsmenu.lib
+ *  @since S60 v5.0
+ */
+NONSHARABLE_CLASS( CMcsChildrenScanner ) : 
+    public CActive,
+    public MMenuEngOperation
+    {
+    
+public:
+
+    /**
+     * Creates an instance of CMcsChildrenScanner implementation.
+     *
+     * @since S60 v5.0
+     */
+    static CMcsChildrenScanner* NewL( 
+    	MMcsChildrenScanner& aObserver, 
+        CMenuSrvEng& aSrvEng);
+
+    /**
+     * Destructor.
+     */
+    virtual ~CMcsChildrenScanner();
+    
+    void Scan(TInt aId);
+    
+private:
+   
+   /**
+    * Execute engine operation:
+    */
+    void RunMenuEngOperationL();
+
+    /**
+    * Error handling: ignore error.
+    * @param aErr Error code.
+    */
+    void CompletedMenuEngOperation( TInt aErr );
+    
+    void ScanFolderL();
+    
+
+private:
+    /**
+     * Constructor.
+     *
+     * @since S60 v5.0
+     */
+	CMcsChildrenScanner ( 
+		MMcsChildrenScanner& aObserver, 
+        CMenuSrvEng& aSrvEng);
+
+    /**
+     * Symbian 2nd phase constructor.
+     */
+    void ConstructL();
+
+private: // From CActive.
+    
+    /**
+     * From CActive.
+     */
+    void DoCancel();
+        
+    /**
+     * From CActive.
+     */
+    void RunL();      
+
+    /**
+    * Error handling: ignore error.
+    * @param aErr Error code.
+    */
+    TInt RunError( TInt aError );
+    
+private: 
+    
+    void AddId(TInt aId);
+    
+    void RemoveId(TInt aId);
+        
+private:
+
+	
+    /**
+     * Interface for notifying changes.
+     * Not own.
+     */
+	MMcsChildrenScanner& iObserver;     
+    
+	/**
+	 * Menu engine.
+	 * Not own.
+	 */
+    CMenuSrvEng& iSrvEng;
+    
+    TBool iOpStatus;
+    
+    RArray<TInt> iIdBuff;
+
+    };
+
+#endif /*MCSCHILDRENSCANNER_H_*/