C++ DataEngine::serviceForSource方法代码示例

void FdoSelectionManagerPrivate::createNotification(WId winId)
{
    if (!tasks.contains(winId)) {
        kDebug() << "message request from unknown task" << winId;
        return;
    }

    MessageRequest &request = messageRequests[winId];
    Task *task = tasks[winId];

    QString message = QString::fromUtf8(request.message);
    message = QTextDocument(message).toHtml();

    if (!notificationsEngine) {
        notificationsEngine = Plasma::DataEngineManager::self()->loadEngine("notifications");
    }
    //FIXME: who is the source in this case?
    Plasma::Service *service = notificationsEngine->serviceForSource("notification");
    KConfigGroup op = service->operationDescription("createNotification");

    if (op.isValid()) {
        op.writeEntry("appName", task->name());
        //FIXME: find a way to pass icons trough here
        op.writeEntry("appIcon", task->name());

        //op.writeEntry("summary", task->name());
        op.writeEntry("body", message);
        op.writeEntry("timeout", (int)request.timeout);
        KJob *job = service->startOperationCall(op);
        QObject::connect(job, SIGNAL(finished(KJob*)), service, SLOT(deleteLater()));
    } else {
        delete service;
        kDebug() << "invalid operation";
    }
}

void ControlWidget::ConnectSource()
{
    Plasma::DataEngine* engine = m_parent->getDataEngine();
    if (engine && engine->isValid())
    {
        Logger::Log(DEBUG, "Connecting source %s", m_unit.address());
        engine->connectSource(m_unit.address(), this, 0);

        m_serviceUnit = engine->serviceForSource(m_unit.address());
        if (!m_serviceUnit)
            Logger::Log(ERROR, "Connecting source %s: Null Service", m_unit.address());
    }
    else
    {
        Logger::Log(ERROR, "Connecting source %s: Null Data Engine", m_unit.address());
        m_serviceUnit = 0;
    }
}

void WicdApplet::init()
{
    m_theme->resize(contentsRect().size());
    
    Plasma::ToolTipManager::self()->registerWidget(this);

    //load dataengine
    Plasma::DataEngine *engine = dataEngine("wicd");
    if (!engine->isValid()) {
        setFailedToLaunch(true, i18n("Unable to load the Wicd data engine."));
        return;
    }
    
    setupActions();
    
    //build the popup dialog
    QGraphicsWidget *appletDialog = new QGraphicsWidget(this);
    m_dialoglayout = new QGraphicsLinearLayout(Qt::Vertical);
    
    //Network list
    m_scrollWidget = new Plasma::ScrollWidget(appletDialog);
    m_scrollWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    m_scrollWidget->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
    m_scrollWidget->setMaximumHeight(400);

    m_networkView = new NetworkView(m_scrollWidget);
    m_scrollWidget->setWidget(m_networkView);

    m_busyWidget = new Plasma::BusyWidget(m_scrollWidget);
    m_busyWidget->hide();

    m_dialoglayout->addItem(m_scrollWidget);
    
    //Separator
    m_dialoglayout->addItem(new Plasma::Separator(appletDialog));
    
    //Bottom bar
    QGraphicsLinearLayout* bottombarLayout = new QGraphicsLinearLayout(Qt::Horizontal);
    
    m_messageBox = new Plasma::Label(appletDialog);
    m_messageBox->setWordWrap(false);
    bottombarLayout->addItem(m_messageBox);
    
    bottombarLayout->addStretch();
    
    m_abortButton = new Plasma::ToolButton(appletDialog);
    m_abortButton->setIcon(KIcon("dialog-cancel"));
    m_abortButton->nativeWidget()->setToolTip(i18n("Abort"));
    connect(m_abortButton, SIGNAL(clicked()), this, SLOT(cancelConnect()));
    bottombarLayout->addItem(m_abortButton);
    
    Plasma::ToolButton *reloadButton = new Plasma::ToolButton(appletDialog);
    reloadButton->nativeWidget()->setToolTip(i18n("Reload"));
    reloadButton->setAction(action("reload"));
    bottombarLayout->addItem(reloadButton);
    
    m_dialoglayout->addItem(bottombarLayout);
    
    appletDialog->setLayout(m_dialoglayout);
    setGraphicsWidget(appletDialog);

    setHasConfigurationInterface(true);
    
    // read config
    configChanged();

    connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), SLOT(updateColors()));


    //prevent notification on startup
    m_status.State = 10;
    m_isScanning = false;
    //connect dataengine
    m_wicdService = engine->serviceForSource("");
    engine->connectSource("status", this);
    engine->connectSource("daemon", this);
}