diff -r f72a12da539e -r 5315654608de idlehomescreen/widgetmanager/inc/wmpersistentwidgetorder.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/idlehomescreen/widgetmanager/inc/wmpersistentwidgetorder.h	Thu Jan 07 12:39:41 2010 +0200
@@ -0,0 +1,142 @@
+/*
+* 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:
+* Defines an ordered list of widget id's with persistence capability
+*
+*/
+
+#ifndef WMPERSISTENTWIDGETORDER_H
+#define WMPERSISTENTWIDGETORDER_H
+
+// INCLUDES
+#include <e32base.h>
+#include "wmwidgetdata.h"
+
+// FORWARD DECLARATIONS
+class RFs;
+
+// CLASS DECLARATION
+/**
+ *  CWmPersistentWidgetOrder
+ * This class is an ordered list of widget identifiers. The list can be
+ * serialised and extract from stream and persisted. The list can be used
+ * in sorting a pointer array of CWmWidgetData.
+ */
+NONSHARABLE_CLASS( CWmPersistentWidgetOrder ) : public CBase
+    {
+
+public: // Constructors and destructor
+    /** 
+     * static constructor.
+     */
+    static CWmPersistentWidgetOrder* NewL( RFs& aFs );
+
+    /** Destructor. */
+    ~CWmPersistentWidgetOrder();
+
+private: // private construction
+
+    /**
+     * constructor
+     */
+    CWmPersistentWidgetOrder( RFs& aFs );
+
+    /**
+     * 2nd phase constructor
+     */
+    void ConstructL();
+
+
+public: // API
+
+    /**
+     * Loads the persistent widget list from storage.
+     * This is typically done once after construction.
+     * The instance can now be used to sort widget data.
+     */
+    void LoadL();
+  
+    /**
+     * Stores a sorted array of WmWidgetData types. Note that
+     * the order will be directly stored and a copy will not
+     * be kept locally, so this instance can not be used to
+     * sort widget data until LoadL() is called.
+     * 
+     * @param aArray the array of widget daya types
+     */
+    void StoreL( const RWidgetDataValues& aArray );
+
+    /**
+     * Retrieves an index of given widget data object within the list.
+     * This index can be used to sort and organise. Note that LoadL()
+     * must be used prior to calling this method, and before that
+     * there must be something persisted.
+     * 
+     * @param aWidgetData data to seek index of in the sorted order
+     * @return the index found, or KErrNotFound if widget is new
+     */
+    TInt IndexOf( const CWmWidgetData& aWidgetData ) const;
+
+    /**
+     * checks if the persistent widget order is empty. In this case it does
+     * not make any sense to use the object to sort anything.
+     * Note that before loading the object is always empty.
+     */
+    TBool IsEmpty() const;
+
+protected:
+
+    /**
+     * Cleans up the array
+     */
+    void CleanupArray();
+
+    /**
+     * build the storage file path and name. The storage file will be located
+     * in host process private directory.
+     * @param aPathBuf a buffer to receive the complete file path
+     */
+    void GetStoreFileNameL( TDes& aPathBuf );
+
+    /**
+     * Unique tag of a widget
+     */
+    class Tag
+        {
+        public:
+            /** constructs a tag from parameters */
+            Tag( TInt32 aUid, HBufC16* aPublisherId );
+
+            /** compares a tag agains a widget data */
+            TBool Matches( const CWmWidgetData& aWidgetData ) const;
+
+            /** widget uid */
+            TInt32 iUid;
+
+            /** widget publisher id */
+            HBufC16* iPublisherId;
+        };
+
+private: // data members
+
+    /** the file session */
+    RFs& iFs;
+
+    /** array of widget tags for sorting */
+    RArray<Tag> iTagArray;
+
+    };
+
+
+#endif // WMPERSISTENTWIDGETORDER_H