--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/usbengines/usbotgwatcher/src/cusbotgstateobserver.cpp Fri Jun 04 10:27:39 2010 +0100
@@ -0,0 +1,277 @@
+/*
+ * Copyright (c) 2008 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: Implementation
+ *
+ */
+
+#include "cusbotgstateobserver.h"
+
+#include "definitions.h"
+#include "debug.h"
+#include "panic.h"
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CUsbOtgStateObserver::CUsbOtgStateObserver() :
+ CActive(EPriorityStandard)
+ {
+ CActiveScheduler::Add(this);
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CUsbOtgStateObserver::ConstructL()
+ {
+ LOG_FUNC
+
+ LEAVEIFERROR(iOtgState.Attach(KUidUsbManCategory,
+ KUsbOtgStateProperty));
+
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CUsbOtgStateObserver* CUsbOtgStateObserver::NewL()
+ {
+ LOG_FUNC
+
+ CUsbOtgStateObserver* self = new (ELeave) CUsbOtgStateObserver();
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ CleanupStack::Pop(self);
+ return self;
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CUsbOtgStateObserver::~CUsbOtgStateObserver()
+ {
+ LOG_FUNC
+
+ Cancel();
+
+ iOtgState.Close();
+
+ iObservers.Close();
+
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TUsbOtgState CUsbOtgStateObserver::OtgState()
+ {
+ TInt val(0);
+
+ TInt err = iOtgState.Get(val);
+
+ if (KErrNone != err)
+ {
+ LOG("CanNotGetOtgStateProperty" );
+ PANIC( ECanNotGetOtgStateProperty);
+ }
+
+ return (TUsbOtgState) val;
+
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CUsbOtgStateObserver::SubscribeL(MUsbOtgStateObserver& aObserver)
+ {
+ LOG_FUNC
+
+ // check if the same observer already exist in a list
+ if (KErrNotFound != iObservers.Find(&aObserver))
+ {
+ LOG( "Observer already exists" );
+ PANIC( EObserverAlreadyExists);
+ return;
+ }
+ iObservers.AppendL(&aObserver);
+
+ if (KFirst == iObservers.Count()) // first item
+ {
+ iOtgState.Subscribe(iStatus);
+ SetActive();
+
+ }
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CUsbOtgStateObserver::UnsubscribeL(MUsbOtgStateObserver& aObserver)
+ {
+ LOG_FUNC
+
+ TInt i(iObservers.Find(&aObserver));
+ if (KErrNotFound == i)
+ {
+ LOG("Observer not found");
+ PANIC( ECanNotFindOtgStateObserver);
+ return;
+ }
+
+ iObservers.Remove(i);
+
+ if (0 == iObservers.Count()) // no observers anymore
+ {
+ // cancel pending request
+ Cancel();
+ }
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CUsbOtgStateObserver::RunL()
+ {
+ LOG_FUNC
+
+ LOG1( "iStatus = %d" , iStatus.Int());
+
+ // if error occured, tell to Observers
+ if (KErrNone != iStatus.Int())
+ {
+ for (TInt i(0); i < iObservers.Count(); ++i)
+ {
+ iObservers[i]->OtgStateErrorL(iStatus.Int());
+ }
+ return;
+ }
+
+ // re-issue request first
+ iOtgState.Subscribe(iStatus);
+ SetActive();
+
+ // then process property change
+ TUsbOtgState state(OtgState());
+
+ switch (state)
+ {
+ case EUsbOtgStateReset:
+ {
+ LOG("OTGState == RESET" );
+ break;
+ }
+ case EUsbOtgStateAIdle:
+ {
+ LOG("OTGState == AIdle" );
+ for (TInt i(0); i < iObservers.Count(); ++i)
+ {
+ iObservers[i]->AIdleL();
+ }
+ break;
+ }
+ case EUsbOtgStateAHost:
+ {
+ LOG( "OTGState == AHost");
+ for (TInt i(0); i < iObservers.Count(); ++i)
+ {
+ iObservers[i]->AHostL();
+ }
+ break;
+ }
+ case EUsbOtgStateAPeripheral:
+ {
+ LOG("OTGState == APeripheral" );
+ for (TInt i(0); i < iObservers.Count(); ++i)
+ {
+ iObservers[i]->APeripheralL();
+ }
+ break;
+ }
+ case EUsbOtgStateAVbusError:
+ {
+ LOG("OTGState == AVBusError" );
+ for (TInt i(0); i < iObservers.Count(); ++i)
+ {
+ iObservers[i]->AVBusErrorL();
+ }
+ break;
+ }
+ case EUsbOtgStateBIdle:
+ {
+ LOG( "OTGState == BIdle" );
+ for (TInt i(0); i < iObservers.Count(); ++i)
+ {
+ iObservers[i]->BIdleL();
+ }
+ break;
+ }
+ case EUsbOtgStateBPeripheral:
+ {
+ LOG("OTGState == BPeripheral" );
+ for (TInt i(0); i < iObservers.Count(); ++i)
+ {
+ iObservers[i]->BPeripheralL();
+ }
+ break;
+ }
+ case EUsbOtgStateBHost:
+ {
+ LOG("OTGState == BHost" );
+ for (TInt i(0); i < iObservers.Count(); ++i)
+ {
+ iObservers[i]->BHostL();
+ }
+ break;
+ }
+ default:
+ {
+ LOG("WrongOtgState" );
+ PANIC( EWrongOtgState);
+ }
+ }
+
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CUsbOtgStateObserver::DoCancel()
+ {
+ iOtgState.Cancel();
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TInt CUsbOtgStateObserver::RunError(TInt aError)
+ {
+ LOG_FUNC
+
+ LOG1( "aError = %d" , aError);
+
+ // try to continue
+ return KErrNone;
+
+ }
+