--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javaextensions/sensor/src.s60/cpssensorbase.cpp	Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,333 @@
+/*
+* 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:  Base class for Publish & Subscripe -type Sensors
+*
+*/
+
+
+#include "sensorlistener.h"
+#include "cpssensorbase.h"
+#include "logger.h"
+
+const TInt KPSSensorChannel = 0;
+const TInt KPSSensorInvalidValue = 0;
+
+CPSSensorBase::CPSSensorBase(TTimeIntervalMicroSeconds32 aPollInterval)
+        : iPollInterval(aPollInterval)
+{
+    JELOG2(ESensor);
+}
+
+CPSSensorBase::~CPSSensorBase()
+{
+    JELOG2(ESensor);
+    iProperty.Close();
+    if (iAsyncQuery)
+    {
+        iAsyncQuery->Cancel();
+        delete iAsyncQuery;
+    }
+    if (iPollTimer)
+    {
+        iPollTimer->Cancel();
+        delete iPollTimer;
+    }
+}
+
+void CPSSensorBase::ConstructL(TUid aPropertyCategory, TInt aPropertyKey)
+{
+    JELOG2(ESensor);
+    iPropertyCategory = aPropertyCategory;
+    iPropertyKey = aPropertyKey;
+    CSensorBase::ConstructL();
+}
+
+int CPSSensorBase::OpenChannel(SensorListener* aListener)
+{
+    JELOG2(ESensor);
+    TRAPD(err, OpenChannelL(aListener));
+    return err;
+}
+
+void CPSSensorBase::OpenChannelL(SensorListener* aListener)
+{
+    JELOG2(ESensor);
+    iSensorListener = aListener;
+    iPollTimer = CPSSensorDataListenTimer::NewL(*this);
+    CActiveScheduler::Add(iPollTimer);
+
+    iAsyncQuery = CPSSensorBaseAsyncQuery::NewL(*this, iPropertyCategory, iPropertyKey);
+    CActiveScheduler::Add(iAsyncQuery);
+
+    User::LeaveIfError(iProperty.Attach(iPropertyCategory, iPropertyKey));
+}
+
+void CPSSensorBase::StartDataListeningL()
+{
+    JELOG2(ESensor);
+    if (iPollTimer->IsActive())
+    {
+        iPollTimer->Cancel();
+    }
+    ResetAccumulationData();
+    AccumulateDataL();
+}
+
+void CPSSensorBase::CancelDataListeningL()
+{
+    JELOG2(ESensor);
+    iPollTimer->Cancel();
+}
+
+void CPSSensorBase::CloseChannelL()
+{
+    JELOG2(ESensor);
+    iSensorListener = NULL;
+}
+
+void CPSSensorBase::StartConditionListeningL()
+{
+    JELOG2(ESensor);
+    // Evaluate current value right away to check if the current
+    // value already matches
+    PropertyValueChanged();
+
+    // Request notification of property value change
+    iAsyncQuery->NotifyOnChange();
+}
+
+void CPSSensorBase::StopConditionListeningL()
+{
+    JELOG2(ESensor);
+    iAsyncQuery->Cancel();
+}
+
+TBool CPSSensorBase::EvaluateConditions(TInt aValue, TInt aChannelId)
+{
+    JELOG2(ESensor);
+    // Values below zero are error codes; no condition listening callbacks
+    // for invalid values.
+    if (aValue < 0)
+    {
+        return EFalse;
+    }
+    return CSensorBase::EvaluateConditions(aValue, aChannelId);
+}
+
+
+void CPSSensorBase::AddConditionL(void** aHandle, int aChannelId,
+                                  double aLowerLimit, double aUpperLimit, int aLowerOp,
+                                  int aUpperOp)
+{
+    JELOG2(ESensor);
+    CSensorBase::AddConditionL(aHandle, aChannelId, aLowerLimit,
+                               aUpperLimit, aLowerOp, aUpperOp);
+
+    // Check conditions right away for current value
+    PropertyValueChanged();
+}
+
+void CPSSensorBase::ResetAccumulationData()
+{
+    JELOG2(ESensor);
+    iData[ KPSSensorChannel ]->iNumOfValues = 0;
+    iStartTime = KErrNotFound;
+}
+
+void CPSSensorBase::AccumulateDataL()
+{
+    JELOG2(ESensor);
+    __ASSERT_DEBUG(iData != NULL, User::Invariant());
+    SensorData* data = iData[ KPSSensorChannel ];
+
+    // Request new data accumulation event
+    iPollTimer->After(iPollInterval);
+
+    TTime currentTime;
+    if (data->iTimeStampsIncluded || (iBufferingPeriod > 0))
+    {
+        currentTime.UniversalTime();
+        if (iStartTime == KErrNotFound)
+        {
+            iStartTime = currentTime;
+        }
+    }
+
+    TInt currentValue = 0;
+    TInt err = iProperty.Get(currentValue);
+    __ASSERT_DEBUG(err == KErrNone, User::Invariant());
+
+    // P&S sensors are assumed to have one channel only
+    TInt interpretedValue = InterpretValue(currentValue);
+
+    // Negative values are error codes and therefore marked
+    // as invalid. Returned value for invalid values is zero.
+    if (interpretedValue < 0)
+    {
+        data->iIntValues[ data->iNumOfValues ] = KPSSensorInvalidValue;
+        if (data->iValiditiesIncluded)
+        {
+            data->iValidities[ data->iNumOfValues ] = EFalse;
+        }
+    }
+    else
+    {
+        data->iIntValues[ data->iNumOfValues ] = interpretedValue;
+        if (data->iValiditiesIncluded)
+        {
+            data->iValidities[ data->iNumOfValues ] = ETrue;
+        }
+    }
+
+    if (data->iTimeStampsIncluded)
+    {
+        data->iTimeStamps[ data->iNumOfValues ] = TimeStamp(currentTime);
+    }
+    data->iNumOfValues++;
+
+    TInt64 intervalFromStart = -1;
+    if (iBufferingPeriod > 0)
+    {
+        intervalFromStart = currentTime.MicroSecondsFrom(iStartTime).Int64();
+    }
+
+    if ((data->iNumOfValues == iBufferSize) ||
+            (iBufferingPeriod > 0 && intervalFromStart > iBufferingPeriod))
+    {
+        SendData();
+    }
+}
+
+void CPSSensorBase::SendData()
+{
+    JELOG2(ESensor);
+    if (iIsOneShot)
+    {
+        iPollTimer->Cancel();
+    }
+    iSensorListener->DataReceived(iData, EFalse);
+    ResetAccumulationData();
+}
+
+void CPSSensorBase::PropertyValueChanged()
+{
+    JELOG2(ESensor);
+    TInt value;
+    TInt err = iProperty.Get(value);
+    __ASSERT_DEBUG(err == KErrNone, User::Invariant());
+
+    // Negative values are sensor value range
+    if (err == KErrNone && value >= 0)
+    {
+        EvaluateConditions(value, KPSSensorChannel);
+    }
+}
+
+// ***************************************************************************
+// CPSSensorBaseAsyncQuery
+// ***************************************************************************
+
+CPSSensorBase::CPSSensorBaseAsyncQuery*
+CPSSensorBase::CPSSensorBaseAsyncQuery::NewL(CPSSensorBase& aSensorBase,
+        TUid aPropertyCategory, TInt aPropertyKey)
+{
+    JELOG2(ESensor);
+    CPSSensorBaseAsyncQuery* self =
+        new(ELeave)CPSSensorBaseAsyncQuery(aSensorBase);
+    CleanupStack::PushL(self);
+    self->ConstructL(aPropertyCategory, aPropertyKey);
+    CleanupStack::Pop(); // self
+    return self;
+}
+
+CPSSensorBase::CPSSensorBaseAsyncQuery::CPSSensorBaseAsyncQuery(CPSSensorBase& aSensorBase)
+        : CActive(EPriorityStandard), iSensorBase(aSensorBase)
+{
+    JELOG2(ESensor);
+}
+
+void CPSSensorBase::CPSSensorBaseAsyncQuery::ConstructL(TUid aPropertyCategory, TInt aPropertyKey)
+{
+    JELOG2(ESensor);
+    User::LeaveIfError(iProperty.Attach(aPropertyCategory, aPropertyKey));
+}
+
+CPSSensorBase::CPSSensorBaseAsyncQuery::~CPSSensorBaseAsyncQuery()
+{
+    JELOG2(ESensor);
+    iProperty.Close();
+}
+
+void CPSSensorBase::CPSSensorBaseAsyncQuery::NotifyOnChange()
+{
+    JELOG2(ESensor);
+    if (!IsActive())
+    {
+        iProperty.Subscribe(iStatus);
+        SetActive();
+    }
+}
+
+void CPSSensorBase::CPSSensorBaseAsyncQuery::RunL()
+{
+    JELOG2(ESensor);
+    iProperty.Subscribe(iStatus);
+    SetActive();
+    iSensorBase.PropertyValueChanged();
+}
+
+void CPSSensorBase::CPSSensorBaseAsyncQuery::DoCancel()
+{
+    JELOG2(ESensor);
+    iProperty.Cancel();
+}
+
+// ***************************************************************************
+// CPSSensorDataListenTimer
+// ***************************************************************************
+
+CPSSensorBase::CPSSensorDataListenTimer*
+CPSSensorBase::CPSSensorDataListenTimer::NewL(CPSSensorBase& aSensorBase)
+{
+    JELOG2(ESensor);
+    CPSSensorDataListenTimer* self =
+        new(ELeave)CPSSensorDataListenTimer(aSensorBase);
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(); // self
+    return self;
+}
+
+CPSSensorBase::CPSSensorDataListenTimer::CPSSensorDataListenTimer(
+    CPSSensorBase& aSensorBase)
+        : CTimer(EPriorityNormal), iSensorBase(aSensorBase)
+{
+    JELOG2(ESensor);
+}
+
+CPSSensorBase::CPSSensorDataListenTimer::~CPSSensorDataListenTimer()
+{
+    JELOG2(ESensor);
+}
+
+void CPSSensorBase::CPSSensorDataListenTimer::RunL()
+{
+    JELOG2(ESensor);
+    iSensorBase.AccumulateDataL();
+}
+
+void CPSSensorBase::CPSSensorDataListenTimer::DoCancel()
+{
+    JELOG2(ESensor);
+}