diff -r e5618cc85d74 -r 6c158198356e javamanager/javainstaller/installer/src.s60/utils/propertylistener.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javamanager/javainstaller/installer/src.s60/utils/propertylistener.cpp	Thu Aug 19 09:48:13 2010 +0300
@@ -0,0 +1,122 @@
+/*
+* Copyright (c) 2010 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 general wait object for calling
+* a callback function after subscribed P&S key value changes.
+*
+*/
+
+#include "propertylistener.h"
+#include "logger.h"
+
+using namespace java::installer;
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+CPropertyListener* CPropertyListener::NewL(TUid aUid, TUint aKey)
+{
+    CPropertyListener* self = new(ELeave) CPropertyListener(aUid, aKey);
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(self);
+    return self;
+}
+
+CPropertyListener::CPropertyListener(TUid aUid, TUint aKey)
+    : CActive(CActive::EPriorityStandard), iUid(aUid), iKey(aKey)
+{
+}
+
+void CPropertyListener::ConstructL()
+{
+    User::LeaveIfError(iProperty.Attach(iUid, iKey));
+    // PropertyListener is always created from a thread which does
+    // not have ActiveScheduler, so create ActiveScheduler now.
+    iActiveScheduler = new(ELeave) CActiveScheduler;
+    CActiveScheduler::Install(iActiveScheduler);
+    // Add this object to the ActiveScheduler.
+    CActiveScheduler::Add(this);
+}
+
+CPropertyListener::~CPropertyListener()
+{
+    Cancel();
+    iProperty.Close();
+    if (iActiveScheduler)
+    {
+        delete iActiveScheduler;
+        iActiveScheduler = 0;
+    }
+}
+
+void CPropertyListener::ProcessEventsL(JNIEnv *aEnv, jobject aProvider)
+{
+    // Get the java side callback method.
+    jclass clazz = aEnv->GetObjectClass(aProvider);
+    jmethodID method = aEnv->GetMethodID(clazz, "valueChanged", "(I)V");
+
+    iEnv = aEnv;
+    iProvider = aProvider;
+    iMethod = method;
+
+    // Run propertyListener once so that the current property value
+    // gets delivered and property value changes are subscribed.
+    RunL();
+
+    // Start ActiveScheduler.
+    CActiveScheduler::Start();
+}
+
+void CPropertyListener::RunL()
+{
+    if (iCancelled)
+    {
+        CActiveScheduler::Stop();
+        return;
+    }
+
+    // Resubscribe before handling the new value to prevent missing updates.
+    iProperty.Subscribe(iStatus);
+    SetActive();
+
+    TInt value;
+    TInt err = iProperty.Get(value);
+    if (KErrNone == err)
+    {
+        //ILOG3(EJavaInstaller,
+        //      "CPropertyListener::RunL: property value changed"
+        //      ", uid: 0x%x, key: 0x%x, value: %d", iUid.iUid, iKey, value);
+        // Use callback method to deliver the changed property value to
+        // Java side object.
+        iEnv->CallVoidMethod(iProvider, iMethod, value);
+    }
+    else if (KErrNotFound == err)
+    {
+        // Property deleted, no actions needed.
+    }
+    else
+    {
+        // Error while reading property value.
+        ELOG3(EJavaInstaller,
+              "CPropertyListener::RunL: getting property value failed"
+              ", uid: 0x%x, key: 0x%x, err=%d", iUid.iUid, iKey, err);
+    }
+}
+
+void CPropertyListener::DoCancel()
+{
+    iCancelled = ETrue;
+    iProperty.Cancel();
+}