--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/musichomescreen_multiview/musiccontentpublisher/inc/musiccontentmap.h	Wed Mar 31 21:26:33 2010 +0300
@@ -0,0 +1,188 @@
+/*
+* Copyright (c) 2008-2008 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:  Manages MCP plugins, and content publishing.
+*
+*/
+
+#ifndef C_MUSICCONTENTMAP_H
+#define C_MUSICCONTENTMAP_H 
+
+#include <liwvariant.h>
+#include <e32hashtab.h>
+
+// CLASS DECLARATION
+
+/**
+* Data class to construct and hold variant values persistently.
+*/
+class RMusicContentVariant {
+  public:
+
+    /**
+     * Constructor
+     *
+     * Constructs a null variant value.
+     */
+    RMusicContentVariant();
+
+    /**
+     * Reset variant to null value.
+     * Frees content.
+     */
+    void Reset();
+
+    /**
+     * Set variant to integer value.
+     * @param New value.
+     * @return Whether the value was changed.
+     * Frees content of previous value.
+     */
+    TBool SetL( TInt aInt);
+
+    /**
+     * Set variant to string value.
+     * @param New value. An internal copy of the string is made.
+     * @return Whether the value was changed.
+     * Frees content of previous value.
+     */
+    TBool SetL( const TDesC& aDesc );
+
+    /**
+     * Set variant to map value.
+     * @param New value. Reference counter of the map is increased.
+     * @return Whether the value was changed.
+     * Frees content of previous value.
+     */
+    TBool SetL( CLiwMap * aMap );
+    
+    /**
+     * Check whether value has been modified since the last ResetModified.
+     * @return ETrue if value has been modified.
+     */
+    TBool IsModified() const;
+
+    /**
+     * Reset modified flag.
+     * After calling this method IsModified returns EFalse.
+     */
+    void ResetModified();
+    
+    /**
+     * Return whether the value is null.
+     * @return ETrue if value is null.
+     */
+    TBool IsNull() const;
+
+    /**
+     * Return the value as TLiwVariant
+     * @return Value encapsulated in TLiwVariant.
+     */
+    TLiwVariant LiwVariant() const;
+    
+  private:
+  	
+  	enum TType {ETypeNull, ETypeInt, ETypeBufC, ETypeMap};
+  	
+    TType   iType; // type of the value
+    TBool   iModified; // whether value has been modified
+    
+    // Data area
+    union {
+    	TInt      iInt;
+    	HBufC   * iBufC; // owned
+    	CLiwMap * iMap;  // reference counted
+    } iValue;
+    
+};
+
+// CLASS DECLARATION
+
+/**
+ *  Persistent map of variable content
+ *
+ *  @lib musiccontentpublisher.dll
+ *  @since S60 S60 v5.0
+ */
+
+class RMusicContentMap {
+  public:
+
+    /**
+     * Constructs an empty map
+     */
+    RMusicContentMap();
+
+    /**
+     * Resets a single value in the map in case it exists
+     * @param aKey The key of the value to be reset
+     * Does nothing if the value does not exist
+     */
+    void Reset( TPtrC8 aKey );
+
+    /**
+     * Sets a string value in the map
+     * @param aKey The key of the value
+     * @param aValue The value for the key. The string is copied.
+     */
+    void SetL( TPtrC8 aKey, const TDesC& aValue );
+
+    /**
+     * Sets an integer value in the map
+     * @param aKey The key of the value
+     * @param aValue The value for the key.
+     */
+    void SetL( TPtrC8 aKey, const TInt& aValue );
+
+    /**
+     * Sets an map value in the map
+     * @param aKey The key of the value
+     * @param aValue The value for the key. The reference count of the map is increased.
+     */
+    void SetL( TPtrC8 aKey, CLiwMap * aMap ); 
+    
+    /**
+     * Check whether value has been modified since last reading the values.
+     * @return ETrue if value has been modified.
+     */
+    TBool IsModified() const;
+    
+    /**
+     * Reads all those entries from the map that have been modified
+     * since previous reading of values. Null values are not read.
+     *
+     * @return A freshly allocated map with modified values. Null is returned if there are no modifications.
+     */
+    CLiwMap * GetModifiedLC ();
+   
+    /**
+     * Reads all non-null entries from the map.
+     *
+     * @return aMap  A freshly allocated map with entries. Null is returned if map is empty.
+     */
+    CLiwMap * GetAllLC();
+    
+    /**
+     * Closes the map discarding all its content.
+     */
+    void Close();
+  
+  private:
+  	
+  	RMusicContentVariant& AtL (TPtrC8 aKey);
+  	
+  	RHashMap<TPtrC8, RMusicContentVariant> iMap;
+  	TBool                                  iModified;
+};
+
+#endif