usbengines/usbwatcher/inc/tusbindicatorhandler.h
changeset 8 7e15987c4500
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbengines/usbwatcher/inc/tusbindicatorhandler.h	Tue Feb 02 00:52:37 2010 +0200
@@ -0,0 +1,82 @@
+/*
+* 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:  Header file for class TUsbIndicatorHandler
+*
+*/
+
+
+#ifndef TUSBINDICATORHANDLER_H
+#define TUSBINDICATORHANDLER_H
+
+#include <bldvariant.hrh>
+#include <usbstates.h>
+
+
+/**
+*  USB indicator handler class for device side.
+*
+*  This class shows USB indicator when device state changes to Configured, 
+*  and hides USB indicator when device leaves Configured state. Suspended 
+ * state does not change the indicator.
+*
+*  @since TB9.2
+*/
+NONSHARABLE_CLASS( TUsbIndicatorHandler )
+    {
+
+public:
+    /**
+     * Constructor
+     */
+    TUsbIndicatorHandler();
+    
+	/**
+     * Set USB indicator (On/Off, maybe more in future) according to 
+     * the change of USB device state
+     *
+     * @param aStateOld previous USB device state
+     * @param aStateNew current USB device state
+     */
+    void HandleDeviceStateChange( TUsbDeviceState aStateOld, 
+            TUsbDeviceState aStateNew );
+            
+private:
+	/**
+     * Show USB indicator (On/Off, maybe more in future)
+     *
+     * @since TB9.2
+     * @param aUsbIndicatorState the state of the indicator, 0: OFF, 1: ON
+     */
+    void ShowUsbIndicator( TInt aUsbIndicatorState );
+	
+private:
+    /**
+     * The device state before suspend.
+     * Used to filter out suspend from others;
+     */
+    TUsbDeviceState iDevStateB4Suspend;
+    
+    /////////////////////////////////////////////////////////////////////////
+    // Test code
+    friend class CtTUsbIndicatorHandler;
+    TBool iUsbIndicator; 
+    // 
+    /////////////////////////////////////////////////////////////////////////
+     
+    };
+    
+
+#endif   // TUSBINDICATORHANDLER_H
+
+// End of File