--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/idlefw/plugins/devicestatus/inc/aiprioritizer.h	Thu Dec 17 08:54:17 2009 +0200
@@ -0,0 +1,116 @@
+/*
+* Copyright (c) 2006 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:  Network identity related prioritizer.
+*
+*/
+
+
+
+#ifndef M_AIPUBLISHPRIORITIZER_H
+#define M_AIPUBLISHPRIORITIZER_H
+
+#include "aicontentobserver.h"
+
+class MAiPublisherBroadcaster;
+
+
+/**
+ *  @ingroup group_devicestatusplugin
+ *
+ *  Network identity related prioritizer.
+ *
+ *  This class is used as proxy between publishers which publish data that
+ *  needs to be priorised and content observers. It keeps record of published
+ *  data and decides if new published data has high enough priority to go 
+ *  through to content observer.
+ *
+ *  @since S60 3.2
+ */
+class MAiPublishPrioritizer
+    {
+
+public:
+
+    /**
+     * Invoked by publisher that publishes prioritized data.
+     * Data is published only if aPriority is same or higher than
+     * current priority.
+     *
+     * @param  aBroadcaster - Publisher broadcaster implementation.
+     * @param  aContent - identification of content selector, MUST correspond
+     *         single content selector supported by plug-in. The framework
+     *         utilizes the selector id to match for cid and MIME type.
+     * @param  aResource - identification of content reference, MUST correspond
+     *         single content reference supported by plug-in. The framework
+     *         utilizes the reference if to match for cid and MIME type of the
+     *         content supplied with in UI definition.
+     * @param  aPriority - priority of published data.
+     */
+    virtual void TryToPublishL( MAiPublisherBroadcaster& aBroadcaster, 
+                                TInt aContent, 
+                                TInt aResource, 
+                                TInt aPriority ) = 0;
+
+    /**
+     * Invoked by publisher that publishes prioritized data.
+     * Data is published only if aPriority is same or higher than
+     * current priority.
+     *
+     * @param  aBroadcaster - Publisher broadcaster implementation.
+     * @param  aContent - identification of content selector, MUST correspond
+     *         single content selector supported by plug-in. The framework
+     *         utilizes the selector id to match for cid and MIME type.
+     * @param  aText - Textual content in UNICODE.
+     * @param  aPriority - priority of published data.
+     */
+    virtual void TryToPublishL( MAiPublisherBroadcaster& aBroadcaster, 
+                                TInt aContent, 
+                                const TDesC16& aText, 
+                                TInt aPriority ) = 0;
+
+    /**
+     * Invoked by publisher that publishes prioritized data.
+     * Data is published only if aPriority is same or higher than
+     * current priority.
+     *
+     * @param  aBroadcaster - Publisher broadcaster implementation.
+     * @param  aContent - identification of content selector, MUST correspond
+     *         single content selector supported by plug-in. The framework
+     *         utilizes the selector id to match for cid and MIME type.
+     * @param  aBuf - instance of content.
+     * @param  aPriority - priority of published data.
+     */ 
+    virtual void TryToPublishL( MAiPublisherBroadcaster& aBroadcaster, 
+                                TInt aContent, 
+                                const TDesC8& aBuf, 
+                                TInt aPriority ) = 0;
+                                
+    /**
+     * Invoked by publisher that wants to clean previously published data.
+     * Data is cleaned only if aPriority is same than current priority.
+     *
+     * @param  aBroadcaster - Publisher broadcaster implementation.
+     * @param  aContent - identification of content selector, MUST correspond
+     *         single content selector supported by plug-in. The framework
+     *         utilizes the selector id to match for cid and MIME type.
+     * @param  aPriority - priority of published data.
+     */
+    virtual void TryToCleanL( MAiPublisherBroadcaster& aBroadcaster, 
+                                TInt aContent, 
+                                TInt aPriority ) = 0;
+
+    };
+
+
+#endif // M_AIPUBLISHPRIORITIZER_H