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#ifndef QT_NO_SYSTEMTRAYICON
#include "qdbustrayicon_p.h"
#endif
#include "qdbusmenuconnection_p.h"
#include "qdbusmenuadaptor_p.h"
#include "qdbusplatformmenu_p.h"

#include <QtDBus/QDBusMessage>
#include <QtDBus/QDBusServiceWatcher>
#include <QtDBus/QDBusConnectionInterface>
#include <qdebug.h>
#include <qcoreapplication.h>

QT_BEGIN_NAMESPACE

Q_DECLARE_LOGGING_CATEGORY(qLcMenu)

const QString StatusNotifierWatcherService = QLatin1String("org.kde.StatusNotifierWatcher");
const QString StatusNotifierWatcherPath = QLatin1String("/StatusNotifierWatcher");
const QString StatusNotifierItemPath = QLatin1String("/StatusNotifierItem");
const QString MenuBarPath = QLatin1String("/MenuBar");

/*!
    \class QDBusMenuConnection
    \internal
    A D-Bus connection which is used for both menu and tray icon services.
    Connects to the session bus and registers with the respective watcher services.
*/
QDBusMenuConnection::QDBusMenuConnection(QObject *parent)
    : QObject(parent)
    , m_connection(QDBusConnection::sessionBus())
    , m_dbusWatcher(new QDBusServiceWatcher(StatusNotifierWatcherService, m_connection, QDBusServiceWatcher::WatchForRegistration, this))
    , m_watcherRegistered(false)
{
#ifndef QT_NO_SYSTEMTRAYICON
    // Start monitoring if any known tray-related services are registered.
    if (m_connection.interface()->isServiceRegistered(StatusNotifierWatcherService))
        m_watcherRegistered = true;
    else
        qCDebug(qLcMenu) << "failed to find service" << StatusNotifierWatcherService;
#endif
}

void QDBusMenuConnection::dbusError(const QDBusError &error)
{
    qWarning() << "QDBusTrayIcon encountered a D-Bus error:" << error;
}

#ifndef QT_NO_SYSTEMTRAYICON
bool QDBusMenuConnection::registerTrayIcon(QDBusTrayIcon *item)
{
    bool success = connection().registerService(item->instanceId());
    if (!success) {
        qWarning() << "failed to register service" << item->instanceId();
        return false;
    }

    success = connection().registerObject(StatusNotifierItemPath, item);
    if (!success) {
        unregisterTrayIcon(item);
        qWarning() << "failed to register" << item->instanceId() << StatusNotifierItemPath;
        return false;
    }

    if (item->menu()) {
        success = connection().registerObject(MenuBarPath, item->menu());
        if (!success) {
            unregisterTrayIcon(item);
            qWarning() << "failed to register" << item->instanceId() << MenuBarPath;
            return false;
        }
    }

    QDBusMessage registerMethod = QDBusMessage::createMethodCall(
                StatusNotifierWatcherService, StatusNotifierWatcherPath, StatusNotifierWatcherService,
                QLatin1String("RegisterStatusNotifierItem"));
    registerMethod.setArguments(QVariantList() << item->instanceId());
    success = m_connection.callWithCallback(registerMethod, this, SIGNAL(trayIconRegistered()), SLOT(dbusError(QDBusError)));

    return success;
}

bool QDBusMenuConnection::unregisterTrayIcon(QDBusTrayIcon *item)
{
    connection().unregisterObject(MenuBarPath);
    connection().unregisterObject(StatusNotifierItemPath);
    bool success = connection().unregisterService(item->instanceId());
    if (!success)
        qWarning() << "failed to unregister service" << item->instanceId();
    return success;
}
#endif // QT_NO_SYSTEMTRAYICON

QT_END_NAMESPACE