--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contentstorage/caclient/src/canotifier.cpp	Tue Mar 23 23:17:02 2010 +0200
@@ -0,0 +1,304 @@
+/*
+ * Copyright (c) 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: canotifier.cpp
+ *
+ */
+
+#include "canotifier.h"
+#include "canotifier_p.h"
+#include "canotifierfilter.h"
+#include "caclientnotifierproxy.h"
+
+/*!
+ \class CaNotifier.
+ \brief This class describes notifier.
+
+ \example
+ It's example how client can be notified about changes on data specified by client's filter
+
+ \code
+ // example Client class which wants to be notified about changes
+
+ class Client: public QObject
+ {
+ Q_OBJECT
+ ...
+ public slots:
+
+ updateModelForEntryChanged(int,ChangeType);
+ updateModelForEntryChanged(const CaEntry &,ChangeType);
+ updateModelForEntryTouched(int);
+ updateModelForgroupContentChanged(int);
+ ...
+ };
+ \endcode
+
+ \code
+ // example code showed how to register for notifications
+ Client * client;
+ ...
+ QSharedPointer<CaService> service = CaService::instance();
+ CaNotifierFilter notifierFilter();
+ CaNotifier * notifier = service->createNotifier(notifierfilter);
+
+ // Connections cause that notifier is registered to server distributed
+ // notifications while data changes.
+ if( notifier )
+ {
+ connect( notifier, SIGNAL(entryChanged(int,ChangeType)),
+ client, SLOT(updateModelForEntryChanged(int,ChangeType)) );
+ connect( notifier, SIGNAL(entryChanged(CaEntry,ChangeType)),
+ client, SLOT(updateModelForEntryChanged(CaEntry,ChangeType)) );
+ connect( notifier, SIGNAL(entryTouched(int)),
+ client, SLOT(updateModelForEntryTouched(int)) );
+ connect( notifier, SIGNAL(groupContentChanged(int)),
+ client, SLOT(updateModelForgroupContentChanged(int)) );
+ }
+ ...
+ // creation new entry causes sent notification to the client
+ CaEntry entry;
+ entry.setText( "Text" );
+ entry.setTypeName( "TypeName" );
+ CaEntry * newEntry = service->createEntry( entry );
+ ...
+ \endcode
+
+ \code
+ // here client is being get notifications new entry was created
+ ...
+ Client::updateModelForEntryChanged(int entryId ,ChangeType changeType)
+ {
+ ...
+ changeType == AddChangeType;
+ ...
+ }
+
+ \endcode
+
+ */
+
+/*!
+ Constructor.
+ \param entryPrivate pointer to private implementation.
+ */
+CaNotifier::CaNotifier(CaNotifierPrivate * const notifierPrivate) :
+    QObject(0), m_d(notifierPrivate)
+{
+    m_d->m_q = this;
+    m_d->makeConnect();
+}
+
+/*!
+ Destructor.
+ */
+CaNotifier::~CaNotifier()
+{
+    m_d->makeDisconnect();
+    delete m_d;
+}
+
+/*!
+    This method is called when something has been
+    connected to signal in this object.
+    \param signal which is used to register an appropriate notifier.
+*/
+void CaNotifier::connectNotify(const char *signal)
+{
+    qDebug("CaNotifier::connectNotify");
+    qDebug("\tsignal: %s", signal);
+    if (QLatin1String(signal)
+        == SIGNAL(entryChanged(int,ChangeType))) {
+         // signal is entryChanged(int, ChangeType)
+        if (receivers(SIGNAL(entryChanged(int,ChangeType))) == 1) {
+            m_d->registerNotifier(
+                CaNotifierPrivate::EntryChangedWithIdNotifierType);
+        }
+     }
+    else if (QLatin1String(signal)
+        == SIGNAL(entryChanged(CaEntry,ChangeType))) {
+        // signal is entryChanged(const CaEntry &, ChangeType)
+        if (receivers(SIGNAL(entryChanged(const CaEntry &,ChangeType))) == 1) {
+            m_d->registerNotifier(
+                CaNotifierPrivate::EntryChangedWithEntryNotifierType);
+        }
+    }
+    else if (QLatin1String(signal)
+        == SIGNAL(entryTouched(int))) {
+        // signal is entryTouched(int)
+        if (receivers(SIGNAL(entryTouched(int)))) {
+            m_d->registerNotifier(
+                CaNotifierPrivate::EntryTouchedNotifierType);
+        }
+    }
+    else if (QLatin1String(signal)
+        == SIGNAL(groupContentChanged(int))) {
+        // signal is groupContentChanged(int)
+        if (receivers(SIGNAL(groupContentChanged(int)))) {
+            m_d->registerNotifier(
+                CaNotifierPrivate::GroupContentChangedNotifierType);
+        }
+    }
+}
+
+/*!
+    This method is called when something has been
+    disconnected from signal in this object.
+    \param signal which is used to unregister an appropriate notifier.
+*/
+void CaNotifier::disconnectNotify(const char *signal)
+{
+    qDebug("CaNotifier::disconnectNotify");
+    qDebug("\tsignal: %s", signal);
+    if (QLatin1String(signal)
+        == SIGNAL(entryChanged(int,ChangeType))) {
+         // signal is entryChanged(int, ChangeType)
+        if(receivers(SIGNAL(entryChanged(int,ChangeType)))==0) {
+            m_d->unregisterNotifier(
+                CaNotifierPrivate::EntryChangedWithIdNotifierType);
+        }
+     }
+    else if (QLatin1String(signal)
+        == SIGNAL(entryChanged(CaEntry,ChangeType))) {
+        // signal is entryChanged(const CaEntry &, ChangeType)
+        if (receivers(SIGNAL(entryChanged(const CaEntry &,ChangeType)))==0) {
+            m_d->unregisterNotifier(
+                CaNotifierPrivate::EntryChangedWithEntryNotifierType);
+        }
+    }
+    else if (QLatin1String(signal)
+        == SIGNAL(entryTouched(int))) {
+        // signal is entryTouched(int)
+        if (receivers(SIGNAL(entryTouched(int))) == 0) {
+            m_d->unregisterNotifier(
+                CaNotifierPrivate::EntryTouchedNotifierType);
+        }
+    }
+    else if (QLatin1String(signal)
+        == SIGNAL(groupContentChanged(int))) {
+        // signal is groupContentChanged(int)
+        if (receivers(SIGNAL(groupContentChanged(int))) == 0) {
+            m_d->unregisterNotifier(
+                CaNotifierPrivate::GroupContentChangedNotifierType);
+        }
+    }
+}
+
+/*!
+ Constructor.
+ \param notifierFilter descrbies entries to observe.
+ */
+CaNotifierPrivate::CaNotifierPrivate(
+    const CaNotifierFilter &notifierFilter) :
+    m_q(NULL),
+    mNotifierFilter(NULL),
+    mNotifierProxy(NULL)
+{
+        mNotifierFilter = new CaNotifierFilter(notifierFilter);
+}
+
+/*!
+ Destructor.
+ */
+CaNotifierPrivate::~CaNotifierPrivate()
+{
+    if (mNotifierProxy) {
+        mNotifierProxy->unregisterNotifier(*mNotifierFilter,
+            EntryChangedWithIdNotifierType);
+        mNotifierProxy->unregisterNotifier(*mNotifierFilter,
+            EntryChangedWithEntryNotifierType);
+        mNotifierProxy->unregisterNotifier(*mNotifierFilter,
+            EntryTouchedNotifierType);
+        mNotifierProxy->unregisterNotifier(*mNotifierFilter,
+            GroupContentChangedNotifierType);
+    }
+    delete mNotifierFilter;
+    delete mNotifierProxy;
+}
+/*!
+ Registers notifier
+ \param notifierType type of notifier to register (class of events to listen)
+ */
+int CaNotifierPrivate::registerNotifier(NotifierType notifierType)
+{
+    if (mNotifierProxy) {
+        return mNotifierProxy->registerNotifier(
+            mNotifierFilter,
+            notifierType,
+            mNotifierProxy);
+    }
+    return 0;
+}
+/*!
+ Unregisters notifier
+ \param notifierType type of notifier event type to unregister
+     (class of events to listen)
+ */
+void CaNotifierPrivate::unregisterNotifier(NotifierType notifierType)
+{
+    if (mNotifierProxy) {
+        mNotifierProxy->unregisterNotifier(*mNotifierFilter, notifierType);
+    }
+}
+
+/*!
+ Connects this Notifier
+ */
+void CaNotifierPrivate::makeConnect()
+{
+    if (m_q) {
+        if (!mNotifierProxy) {
+            mNotifierProxy = new CaClientNotifierProxy();
+        }
+        m_q->connect(mNotifierProxy,
+            SIGNAL(signalEntryChanged(int,ChangeType)),
+            m_q,
+            SIGNAL(entryChanged(int,ChangeType)));
+        m_q->connect(mNotifierProxy,
+            SIGNAL(signalEntryChanged(const CaEntry &,ChangeType)),
+            m_q,
+            SIGNAL(entryChanged(const CaEntry &,ChangeType)));
+        m_q->connect(mNotifierProxy,
+            SIGNAL(signalEntryTouched(int)),
+            m_q,
+            SIGNAL(entryTouched(int)));
+        m_q->connect(mNotifierProxy,
+            SIGNAL(signalGroupContentChanged(int)),
+            m_q,
+            SIGNAL(groupContentChanged(int)));
+    }
+}
+/*!
+ Disconnects this Notifier
+ */
+void CaNotifierPrivate::makeDisconnect()
+{
+    if (m_q && mNotifierProxy) {
+        m_q->disconnect(mNotifierProxy,
+            SIGNAL(signalEntryChanged(int,ChangeType)),
+            m_q,
+            SIGNAL(entryChanged(int,ChangeType)));
+        m_q->disconnect(mNotifierProxy,
+            SIGNAL( signalEntryChanged(const CaEntry &,ChangeType)),
+            m_q,
+            SIGNAL(entryChanged(const CaEntry &,ChangeType)));
+        m_q->disconnect(mNotifierProxy,
+            SIGNAL(signalEntryTouched(int)),
+            m_q,
+            SIGNAL(entryTouched(int)));
+        m_q->disconnect(mNotifierProxy,
+            SIGNAL(signalGroupContentChanged(int)),
+            m_q,
+            SIGNAL(groupContentChanged(int)));
+    }
+}