diff -r 666f914201fb -r 2fe1408b6811 epoc32/include/hsdataobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/epoc32/include/hsdataobserver.h	Tue Mar 16 16:12:26 2010 +0000
@@ -0,0 +1,99 @@
+/*
+* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
+* which accompanies this distribution, and is available
+* at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Updates applications and icons in Operator Tile.
+*
+*/
+
+
+#ifndef __HSDATAOBSERVER_H__
+#define __HSDATAOBSERVER_H__
+
+#include <string>
+
+namespace Hs {
+/**
+ * An observer interface. 
+ * Client must implement it to be able to get information
+ * about occuring Execute actions from the Homescreen Publishing API.
+ *
+ * @code
+ * class ObserverClass : public IHsDataObserver
+ * {
+ *      void handleEvent( std::string aWidgetName, 
+ *			IHsDataObserver::EEvent aEvent)
+ *      {
+ *      }
+ * 
+ *      void handleItemEvent( std::string aWidgetName,
+ *        	std::string aWidgetItemName,
+ *       	IHsDataObserver::EItemEvent aEvent)
+ *      {
+ *      }
+ * }
+ * ObserverClass* dataObserver = new ObserverClass();
+ * HsWidgetPublisher* hsPublisher = new HsWidgetPublisher( dataObserver );
+ * @endcode
+ */
+class IHsDataObserver
+    {
+public:
+    
+	/**
+	 * Defines the events that may take place for a homescreen widget.
+	 */
+	enum EEvent
+	    {
+	    EUnknown    = 0, ///< Unknown event: Means that event has not been defined.
+	    EActivate   = 1, ///< Activation event: Means that widget has been added to HS as content.
+	    EDeactivate = 2, ///< Deactivation event: Means that widget has been removed frm.
+	    ESuspend    = 3, ///< Suspension event: Means that HS reading widget data is suspended.
+	    EResume     = 4  ///< Resume event. Means that HS reading widget data is resumed.
+	    };
+    
+	/**
+	 * Defines the events that may take place for a homescreen widget item.
+	 */
+	enum EItemEvent
+	    {
+	    EUnknownItemEvent = 0, ///< Unknown event: Means that event has note been defined.
+	    ESelect           = 1  ///< Selection event: Means that the widget item has been selected.
+	    };
+    
+public:
+
+	/**
+	 * Intended to handle an event that occured on a widget.
+	 * This would include EActivate, EDeactivate, ESuspend, EReusume.
+	 *
+	 * @param aWidgetName Name of the widget that event is envoked for.
+	 * @param aEvent Event type that has taken place.
+	 */
+	virtual void handleEvent( std::string aWidgetName, 
+			IHsDataObserver::EEvent aEvent) = 0;
+	
+	/**
+	 * Intended to handle an event that occured on a widget's item.
+	 * This would include ESelection.
+	 *
+	 * @param aWidgetName Name of the widget that event is envoked for.
+	 * @param awidgetItemName Name of the item that event is envoked for.
+	 * @param aAEvent Event type that has taken place
+	 */    
+	virtual void handleItemEvent( std::string aWidgetName,
+			std::string aWidgetItemName,
+			IHsDataObserver::EItemEvent aEvent) = 0;
+    };
+}
+
+#endif /*__HSDATAOBSERVER_H__*/