bluetoothengine/btmac/src/btmonobearer/bmbcmdlistener.cpp
changeset 0 f63038272f30
child 1 6a1fe72036e3
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bluetoothengine/btmac/src/btmonobearer/bmbcmdlistener.cpp	Mon Jan 18 20:28:57 2010 +0200
@@ -0,0 +1,116 @@
+/*
+* Copyright (c) 2005-2009 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: 
+*       This class implements RemCon bearer pulgin interface.
+*
+*/
+
+#include "bmbcmdlistener.h"
+#include <btengprivatepskeys.h>
+#include "debug.h"
+#include "bmbpanic.h"
+
+CBmbCmdListener* CBmbCmdListener::NewL(CBmbPlugin& aParent)
+    {
+    CBmbCmdListener* self = new(ELeave) CBmbCmdListener(aParent);
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(self);
+	return self;
+    }
+
+CBmbCmdListener::~CBmbCmdListener()
+    {
+   	Cancel();
+	iProperty.Close();
+    }
+
+// ---------------------------------------------------------------------------
+// Send the response via PS, and starts listening the next command
+// to be handled by this bearer.
+// ---------------------------------------------------------------------------
+//
+void CBmbCmdListener::HandlingDataCompleted( const TDesC8& aResp )
+    {
+    // No better error handling than ignoring it.
+    (void) iProperty.Set( aResp );
+    // Handling previous received command has completed, this object 
+    // is ready for picking up the next one, regardless of
+    // response sent successfully or not.
+    Subscribe();
+    TRACE_FUNC
+    }
+
+CBmbCmdListener::CBmbCmdListener(CBmbPlugin& aParent) 
+    : CActive(CActive::EPriorityStandard), iParent(aParent)
+    {
+    CActiveScheduler::Add(this);
+    }
+
+void CBmbCmdListener::ConstructL()
+    {
+	TRACE_FUNC
+    LEAVE_IF_ERROR(iProperty.Attach(KPSUidBluetoothEnginePrivateCategory, KBTATCodec));
+	Subscribe();
+    }
+
+void CBmbCmdListener::RunL()
+    {
+    TRACE_FUNC
+	TInt err = iStatus.Int();
+    // Error could be received from Subscribe when the PS
+    // key is deleted due to powering BT off. In
+    // this case, we just re-subscribe.
+	if(err == KErrNone)
+		{
+	    iAtCmdBuf.Zero();
+    	err = iProperty.Get(iAtCmdBuf);
+    	if ( !err && iAtCmdBuf.Length() > 0 )
+    	    {
+    	    // An AT command to be processed by iParent.
+    	    // At command handling completion, iParent will call this object
+    	    // to send out response via HandlingDataCompleted()
+    	    // which will subscribe to PS key update after the response has been 
+    	    // sent.
+    	    iParent.DataFromRemote(iAtCmdBuf);
+    	    }
+    	else
+    	    {
+    	    // No valid command in the PS key, re-subscribe.
+    	    err = KErrArgument;
+    	    }
+	    }
+	TRACE_ERROR((_L8("listener Status %d"), err))
+	// If err is 0, this object shall not immediately listen to new commands via
+    // Subscribe() function while a command is under processing by iParent. 
+    // Btmonocmdhandler ensures not to deliver
+    // the next command to this bearer while a command is being processed.	
+	if(err != KErrNone)
+        {
+        Subscribe();
+        }
+    }
+
+void CBmbCmdListener::DoCancel()
+    {
+    iProperty.Cancel();
+    }
+
+void CBmbCmdListener::Subscribe()
+    {
+    __ASSERT_ALWAYS( !IsActive(), Panic(EBmbPanicCmdListenerBadState) );
+    iProperty.Subscribe(iStatus);
+    SetActive();
+    TRACE_FUNC
+    }