--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/dosservices/dosserver/inc/dosevent.h Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,122 @@
+/*
+* Copyright (c) 2002 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:
+* This is the definition for CDosEvent class.
+*
+*/
+
+
+#ifndef __DOSEVENT_H__
+#define __DOSEVENT_H__
+
+#include "doseventrcvservice.h"
+
+class CDosEventRcvService;
+class CDosWaitingEvent;
+
+/**
+* It represents an event type that has at least one listener. It forms part of a list of
+* of events that is checked by the EventManager when an event arrives to the DosServer.
+* It maintains a list of listeners wishing to receive the type of event.
+*/
+NONSHARABLE_CLASS( CDosEvent ) : public CBase
+{
+public:
+ /**
+ * Constructor.
+ */
+ inline CDosEvent();
+
+ /**
+ * Destructor.
+ */
+ ~CDosEvent();
+
+ /**
+ * NewL function that creates the object.
+ * @param aEvent Unique Id of the event.
+ * @return A pinter to the newly created object.
+ */
+ static CDosEvent* NewL(TUint aEvent);
+
+ /**
+ * The function compares two events. It's used to maintain an order in the Event array owned by
+ * CEventManagerBase.
+ * @param aFirst One event.
+ * @param aSecond The other event.
+ * @return -1 if first < second, 1 if first > second or 0 if equal.
+ */
+ static TInt Compare(const CDosEvent& aFirst,const CDosEvent& aSecond);
+
+ /**
+ * Returns the event Id.
+ * @return Event Id.
+ */
+ inline TUint Event() const;
+
+ /**
+ * Returns the number of listeners registered to this event.
+ * @return Number of listeners.
+ */
+ inline TInt ListenerCount() const;
+
+ /**
+ * Adds a listener to the event's list.
+ * @param aListener A pointer to the listener to be added.
+ */
+ void AddListener(CDosEventRcvService* aListener);
+
+ /**
+ * Removes a listener from the event's list.
+ * @param aListener A pointer to the listener to be removed.
+ */
+ void RemoveListener(CDosEventRcvService* aListener);
+
+ /**
+ * It delivers an event to all the listeners in the event's list.
+ * @param aEvent A pointer to the event.
+ */
+ void InformListeners(CDosWaitingEvent* aEvent);
+
+private:
+ /**
+ * Symbian two-phased constructor.
+ * @param aEvent Unique Id of the event type.
+ */
+ void ConstructL(TUint aEvent);
+
+ /**
+ * It tells if a certain listener is registered for this event type.
+ * @param aListener A pointer to the listener to be checked.
+ * @return ETrue if the listener is on the list, EFalse otherwise.
+ */
+ TBool ListenerRegistered(CDosEventRcvService* aListener);
+
+private:
+ //A list of clients listening to this event type.
+ TSglQue<CDosEventRcvService> iListenerList;
+
+ //Use to browser trough the iListenerList.
+ TSglQueIter<CDosEventRcvService> iListenerIter;
+
+ //Id of the event.
+ TUint iEventName;
+
+ //Number of listeners in the list.
+ TInt iListenerCount;
+};
+
+#include "dosevent.inl"
+
+#endif // __DOSEVENT_H__