--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javacommons/fileutils/src/driveobserverserver.cpp	Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,254 @@
+/*
+* 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:  DriveObserverServer - platform independent
+*
+*/
+
+
+
+#include "logger.h"
+#include "comms.h"
+#include "commsmessage.h"
+#include "commsendpoint.h"
+
+#include "driveobserverserver.h"
+#include "driveobservermessages.h"
+#include "drivechangedeventgenerator.h"
+
+using java::comms::CommsEndpoint;
+using java::comms::CommsMessage;
+
+namespace java
+{
+namespace fileutils
+{
+
+DriveObserverServer::DriveObserverServer()
+        :iComms(0), iEventGenerator(0)
+{
+    JELOG2(EJavaFile);
+}
+
+DriveObserverServer::~DriveObserverServer()
+{
+    JELOG2(EJavaFile);
+
+    // delete event generator
+    if (iEventGenerator)
+    {
+        iEventGenerator->stopEvents();
+        delete iEventGenerator;
+    }
+
+    // Clear listeners and subscribers collections
+    iListeners.clear();
+    iSubscribers.clear();
+}
+
+void DriveObserverServer::startServer(CommsEndpoint* aComms)
+{
+    JELOG2(EJavaFile);
+
+    iComms = aComms;
+
+    // Register moduleId
+    if (iComms)
+    {
+        iComms->registerListener(java::comms::PLUGIN_ID_DRIVE_OBSERVER_NATIVE_C, this);
+    }
+}
+
+void DriveObserverServer::stopServer()
+{
+    JELOG2(EJavaFile);
+
+    if (iEventGenerator)
+    {
+        iEventGenerator->stopEvents();
+    }
+
+    if (iComms)
+    {
+        // Unregister moduleId
+        iComms->unregisterListener(java::comms::PLUGIN_ID_DRIVE_OBSERVER_NATIVE_C, this);
+    }
+}
+
+
+void DriveObserverServer::registerListener(DriveListenerInterface* aListener)
+{
+    JELOG2(EJavaFile);
+
+    iListeners.push_back(aListener);
+
+    enableEvents();
+}
+
+void DriveObserverServer::unregisterListener(DriveListenerInterface* aListener)
+{
+    JELOG2(EJavaFile);
+
+    for (listenersIter iter = iListeners.begin();
+            iter != iListeners.end() ; /* Empty*/)
+    {
+        if (*iter == aListener)
+        {
+            iter = iListeners.erase(iter);
+        }
+        else
+        {
+            ++iter;
+        }
+    }
+    disableEventsIfNotNeeded();
+}
+
+void DriveObserverServer::driveChanged(const int& aOperation, const driveInfo& aDriveInfo)
+{
+    JELOG2(EJavaFile);
+
+    for (listenersIter iter = iListeners.begin() ;
+            iter != iListeners.end() ; ++iter)
+    {
+        (*iter)->driveChanged(aOperation, aDriveInfo);
+    }
+
+    if (iSubscribers.size() > 0)
+    {
+        CommsMessage msg;
+
+        for (subscribersIter iter = iSubscribers.begin() ;
+                iter != iSubscribers.end() ; ++iter)
+        {
+            setDriveChangedParams(msg, (*iter)->iSubscriberAddress,
+                                  (*iter)->iModuleId, aOperation, aDriveInfo);
+            int rc = 0;
+            LOG2(EJavaFile, EInfo, "Sending driveChanged message to %d/%d",
+                 (*iter)->iSubscriberAddress, (*iter)->iModuleId);
+            if (0 != (rc = iComms->send(msg)))
+            {
+                ELOG1(EJavaFile, "Event message sent failed %d", rc);
+            }
+            msg.reset();
+        }
+    }
+}
+
+void DriveObserverServer::processMessage(CommsMessage& aMessage)
+{
+    JELOG2(EJavaFile);
+
+    switch (aMessage.getMessageId())
+    {
+    case DRIVEOBSERVER_MSG_SUBSCRIBE_EVENTS:
+        registerSubscriber(aMessage);
+        break;
+
+    case DRIVEOBSERVER_MSG_UNSUBSCRIBE_EVENTS:
+        unregisterSubscriber(aMessage);
+        break;
+
+    case DRIVEOBSERVER_MSG_GETDRIVES_REQUEST:
+        getDrives(aMessage);
+        break;
+
+    default:
+        ELOG1(EJavaFile, "Unknown message received %d", aMessage.getMessageId());
+    }
+}
+
+void DriveObserverServer::registerSubscriber(CommsMessage& aMessage)
+{
+    JELOG2(EJavaFile);
+
+    int subsModuleId = 0;
+    getSubscribeParams(aMessage, subsModuleId);
+    iSubscribers.push_back(new subscriberData(subsModuleId,
+                           aMessage.getSender()));
+    enableEvents();
+}
+
+void DriveObserverServer::unregisterSubscriber(CommsMessage& aMessage)
+{
+    JELOG2(EJavaFile);
+
+    for (subscribersIter iter = iSubscribers.begin() ;
+            iter != iSubscribers.end() ; /* empty*/)
+    {
+        if ((*iter)->iSubscriberAddress == aMessage.getSender() &&
+                (*iter)->iModuleId          == aMessage.getModuleId())
+        {
+            iter = iSubscribers.erase(iter);
+        }
+        else
+        {
+            ++iter;
+        }
+    }
+    disableEventsIfNotNeeded();
+}
+
+void DriveObserverServer::getDrives(CommsMessage& aMessage)
+{
+    JELOG2(EJavaFile);
+
+    int driveTypes = 0;
+    getGetDrivesParams(aMessage, driveTypes);
+
+    driveInfos drives;
+    CommsMessage replyMsg;
+    replyMsg.replyTo(aMessage);
+
+    switch (driveTypes)
+    {
+    case DRIVEOBSERER_GET_DRIVES_ALL:
+        DriveUtilities::getAllDrives(drives);
+        break;
+    case DRIVEOBSERER_GET_DRIVES_ACCESIBLE:
+        DriveUtilities::getAccesibleDrives(drives);
+        break;
+    }
+
+    setGetDrivesResultParams(replyMsg, drives);
+    iComms->send(replyMsg);
+}
+
+void DriveObserverServer::enableEvents()
+{
+    JELOG2(EJavaFile);
+
+    if (!iEventGenerator)
+    {
+        // Create platform specific event generator
+        iEventGenerator = new DriveChangedEventGenerator(this);
+        iEventGenerator->startEvents();
+    }
+}
+
+void DriveObserverServer::disableEventsIfNotNeeded()
+{
+    JELOG2(EJavaFile);
+
+    if (0 == iSubscribers.size() &&
+            0 == iListeners.size() &&
+            iEventGenerator)
+    {
+        iEventGenerator->stopEvents();
+        delete iEventGenerator;
+        iEventGenerator = 0;
+    }
+}
+
+} // end of namespace fileutils
+} // end of namespace java