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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: canotifier.cpp
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*
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*/
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#include "canotifier.h"
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#include "canotifier_p.h"
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#include "canotifierfilter.h"
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#include "caclientnotifierproxy.h"
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#include "caobserver.h"
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/*!
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\class CaNotifier.
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\brief This class describes notifier.
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\example
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It's example how client can be notified about changes on data specified by client's filter
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\code
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// example Client class which wants to be notified about changes
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class Client: public QObject
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{
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Q_OBJECT
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...
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public slots:
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updateModelForEntryChanged(int,ChangeType);
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updateModelForEntryChanged(const CaEntry &,ChangeType);
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updateModelForEntryTouched(int);
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updateModelForgroupContentChanged(int);
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...
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};
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\endcode
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\code
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// example code showed how to register for notifications
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Client * client;
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...
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QSharedPointer<CaService> service = CaService::instance();
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CaNotifierFilter notifierFilter();
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CaNotifier * notifier = service->createNotifier(notifierfilter);
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// Connections cause that notifier is registered to server distributed
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// notifications while data changes.
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if( notifier )
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{
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connect( notifier, SIGNAL(entryChanged(int,ChangeType)),
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client, SLOT(updateModelForEntryChanged(int,ChangeType)) );
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connect( notifier, SIGNAL(entryChanged(CaEntry,ChangeType)),
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client, SLOT(updateModelForEntryChanged(CaEntry,ChangeType)) );
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connect( notifier, SIGNAL(entryTouched(int)),
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client, SLOT(updateModelForEntryTouched(int)) );
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connect( notifier, SIGNAL(groupContentChanged(int)),
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client, SLOT(updateModelForgroupContentChanged(int)) );
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}
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...
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// creation new entry causes sent notification to the client
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CaEntry entry;
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entry.setText( "Text" );
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entry.setTypeName( "TypeName" );
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CaEntry * newEntry = service->createEntry( entry );
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...
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\endcode
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\code
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// here client is being get notifications new entry was created
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...
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Client::updateModelForEntryChanged(int entryId ,ChangeType changeType)
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{
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...
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changeType == AddChangeType;
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...
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}
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\endcode
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*/
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/*!
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\var CaNotifierPrivate::m_q
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Points to the CaNotifier instance that uses
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this private implementation.
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*/
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/*!
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\var CaNotifierPrivate::mNotifierFilter
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Own.
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*/
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/*!
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\var CaNotifierPrivate::mNotifierProxy
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Not own.
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*/
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/*!
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Constructor.
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\param entryPrivate pointer to private implementation.
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*/
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CaNotifier::CaNotifier(CaNotifierPrivate *const notifierPrivate) :
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QObject(0), m_d(notifierPrivate)
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{
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m_d->m_q = this;
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m_d->makeConnect();
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}
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/*!
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Destructor.
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*/
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CaNotifier::~CaNotifier()
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{
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m_d->unregisterNotifier(
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CaNotifierPrivate::EntryChangedWithIdNotifierType);
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m_d->unregisterNotifier(
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CaNotifierPrivate::EntryChangedWithEntryNotifierType);
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m_d->unregisterNotifier(
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CaNotifierPrivate::EntryTouchedNotifierType);
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m_d->unregisterNotifier(
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CaNotifierPrivate::GroupContentChangedNotifierType);
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delete m_d;
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}
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/*!
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This method is called when something has been
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connected to signal in this object.
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\param signal which is used to register an appropriate notifier.
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*/
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void CaNotifier::connectNotify(const char *signal)
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{
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qDebug("CaNotifier::connectNotify");
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qDebug("\tsignal: %s", signal);
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if (QLatin1String(signal)
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== SIGNAL(entryChanged(int,ChangeType))) {
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// signal is entryChanged(int, ChangeType)
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if (receivers(SIGNAL(entryChanged(int,ChangeType))) == 1) {
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m_d->registerNotifier(
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CaNotifierPrivate::EntryChangedWithIdNotifierType);
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}
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} else if (QLatin1String(signal)
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== SIGNAL(entryChanged(CaEntry,ChangeType))) {
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// signal is entryChanged(const CaEntry &, ChangeType)
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if (receivers(SIGNAL(entryChanged(const CaEntry &,ChangeType))) == 1) {
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m_d->registerNotifier(
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CaNotifierPrivate::EntryChangedWithEntryNotifierType);
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}
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} else if (QLatin1String(signal)
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== SIGNAL(entryTouched(int))) {
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// signal is entryTouched(int)
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if (receivers(SIGNAL(entryTouched(int)))) {
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m_d->registerNotifier(
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CaNotifierPrivate::EntryTouchedNotifierType);
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}
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} else if (QLatin1String(signal)
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== SIGNAL(groupContentChanged(int))) {
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// signal is groupContentChanged(int)
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if (receivers(SIGNAL(groupContentChanged(int)))) {
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m_d->registerNotifier(
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CaNotifierPrivate::GroupContentChangedNotifierType);
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}
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}
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}
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/*!
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This method is called when something has been
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disconnected from signal in this object.
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\param signal which is used to unregister an appropriate notifier.
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*/
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void CaNotifier::disconnectNotify(const char *signal)
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{
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qDebug("CaNotifier::disconnectNotify");
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qDebug("\tsignal: %s", signal);
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if (QLatin1String(signal)
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== SIGNAL(entryChanged(int,ChangeType))) {
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// signal is entryChanged(int, ChangeType)
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if (receivers(SIGNAL(entryChanged(int,ChangeType)))==0) {
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m_d->unregisterNotifier(
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CaNotifierPrivate::EntryChangedWithIdNotifierType);
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}
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} else if (QLatin1String(signal)
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== SIGNAL(entryChanged(CaEntry,ChangeType))) {
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// signal is entryChanged(const CaEntry &, ChangeType)
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if (receivers(SIGNAL(entryChanged(const CaEntry &,ChangeType)))==0) {
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m_d->unregisterNotifier(
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CaNotifierPrivate::EntryChangedWithEntryNotifierType);
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}
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} else if (QLatin1String(signal)
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== SIGNAL(entryTouched(int))) {
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// signal is entryTouched(int)
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if (receivers(SIGNAL(entryTouched(int))) == 0) {
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m_d->unregisterNotifier(
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CaNotifierPrivate::EntryTouchedNotifierType);
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}
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} else if (QLatin1String(signal)
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== SIGNAL(groupContentChanged(int))) {
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// signal is groupContentChanged(int)
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if (receivers(SIGNAL(groupContentChanged(int))) == 0) {
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m_d->unregisterNotifier(
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CaNotifierPrivate::GroupContentChangedNotifierType);
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}
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}
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}
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/*!
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Constructor.
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\param notifierFilter descrbies entries to observe.
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*/
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CaNotifierPrivate::CaNotifierPrivate(
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const CaNotifierFilter ¬ifierFilter,
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CaClientNotifierProxy *notifierProxy) :
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m_q(NULL),
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mNotifierFilter(NULL),
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mObserver(NULL)
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{
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mNotifierProxy = notifierProxy;
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mNotifierFilter = new CaNotifierFilter(notifierFilter);
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}
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/*!
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Destructor.
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*/
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CaNotifierPrivate::~CaNotifierPrivate()
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{
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if (mNotifierProxy) {
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mNotifierProxy->unregisterNotifier(*mNotifierFilter,
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EntryChangedWithIdNotifierType);
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mNotifierProxy->unregisterNotifier(*mNotifierFilter,
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EntryChangedWithEntryNotifierType);
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mNotifierProxy->unregisterNotifier(*mNotifierFilter,
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EntryTouchedNotifierType);
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mNotifierProxy->unregisterNotifier(*mNotifierFilter,
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GroupContentChangedNotifierType);
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}
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delete mNotifierFilter;
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}
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/*!
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Registers notifier
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\param notifierType type of notifier to register (class of events to listen)
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*/
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int CaNotifierPrivate::registerNotifier(NotifierType notifierType)
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{
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if (mNotifierProxy) {
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return mNotifierProxy->registerNotifier(
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mNotifierFilter,
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notifierType,
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mObserver);
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}
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return 0;
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}
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/*!
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Unregisters notifier
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\param notifierType type of notifier event type to unregister
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(class of events to listen)
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*/
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void CaNotifierPrivate::unregisterNotifier(NotifierType notifierType)
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{
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if (mNotifierProxy) {
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mNotifierProxy->unregisterNotifier(*mNotifierFilter, notifierType);
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}
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}
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/*!
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Connects this Notifier
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*/
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void CaNotifierPrivate::makeConnect()
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{
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if (m_q) {
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mObserver = new CaObserver();
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m_q->connect(mObserver,
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SIGNAL(signalEntryChanged(int,ChangeType)),
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m_q,
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SIGNAL(entryChanged(int,ChangeType)));
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m_q->connect(mObserver,
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SIGNAL(signalEntryChanged(const CaEntry &,ChangeType)),
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m_q,
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SIGNAL(entryChanged(const CaEntry &,ChangeType)));
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m_q->connect(mObserver,
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SIGNAL(signalEntryTouched(int)),
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m_q,
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SIGNAL(entryTouched(int)));
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m_q->connect(mObserver,
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SIGNAL(signalGroupContentChanged(int)),
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m_q,
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SIGNAL(groupContentChanged(int)));
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}
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}
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