155 lines
4.6 KiB
C++
155 lines
4.6 KiB
C++
/**
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* Copyright 2013 Albert Vaca <albertvaka@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License or (at your option) version 3 or any later version
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* accepted by the membership of KDE e.V. (or its successor approved
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* by the membership of KDE e.V.), which shall act as a proxy
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* defined in Section 14 of version 3 of the license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "responsewaiter.h"
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#include <QDBusPendingCall>
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#include <QDBusPendingReply>
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#include <QDebug>
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#include <QCoreApplication>
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//In older Qt released, qAsConst isnt available
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#include "core/qtcompat_p.h"
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Q_DECLARE_METATYPE(QDBusPendingReply<>)
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Q_DECLARE_METATYPE(QDBusPendingReply<QVariant>)
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Q_DECLARE_METATYPE(QDBusPendingReply<bool>)
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Q_DECLARE_METATYPE(QDBusPendingReply<int>)
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Q_DECLARE_METATYPE(QDBusPendingReply<QString>)
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DBusResponseWaiter* DBusResponseWaiter::m_instance = nullptr;
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DBusResponseWaiter* DBusResponseWaiter::instance()
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{
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if (!m_instance)
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{
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m_instance = new DBusResponseWaiter();
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}
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return m_instance;
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}
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DBusResponseWaiter::DBusResponseWaiter()
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: QObject()
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{
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m_registered
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<< qRegisterMetaType<QDBusPendingReply<> >("QDBusPendingReply<>")
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<< qRegisterMetaType<QDBusPendingReply<QVariant> >("QDBusPendingReply<QVariant>")
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<< qRegisterMetaType<QDBusPendingReply<bool> >("QDBusPendingReply<bool>")
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<< qRegisterMetaType<QDBusPendingReply<int> >("QDBusPendingReply<int>")
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<< qRegisterMetaType<QDBusPendingReply<QString> >("QDBusPendingReply<QString>")
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;
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}
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QVariant DBusResponseWaiter::waitForReply(QVariant variant) const
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{
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if (QDBusPendingCall* call = const_cast<QDBusPendingCall*>(extractPendingCall(variant)))
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{
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call->waitForFinished();
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if (call->isError())
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{
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qWarning() << "error:" << call->error();
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return QVariant(QStringLiteral("error"));
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}
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QDBusMessage reply = call->reply();
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if (reply.arguments().count() > 0)
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{
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return reply.arguments().at(0);
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}
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}
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return QVariant();
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}
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DBusAsyncResponse::DBusAsyncResponse(QObject* parent)
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: QObject(parent)
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, m_autodelete(false)
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{
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m_timeout.setSingleShot(true);
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m_timeout.setInterval(15000);
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connect(&m_timeout, &QTimer::timeout, this, &DBusAsyncResponse::onTimeout);
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}
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void DBusAsyncResponse::setPendingCall(QVariant variant)
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{
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if (QDBusPendingCall* call = const_cast<QDBusPendingCall*>(DBusResponseWaiter::instance()->extractPendingCall(variant)))
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{
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QDBusPendingCallWatcher* watcher = new QDBusPendingCallWatcher(*call);
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watcher->setProperty("pengingCallVariant", variant);
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connect(watcher, &QDBusPendingCallWatcher::finished, this, &DBusAsyncResponse::onCallFinished);
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connect(watcher, &QDBusPendingCallWatcher::finished, watcher, &QObject::deleteLater);
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connect(&m_timeout, &QTimer::timeout, watcher, &QObject::deleteLater);
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m_timeout.start();
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}
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}
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void DBusAsyncResponse::onCallFinished(QDBusPendingCallWatcher* watcher)
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{
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m_timeout.stop();
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QVariant variant = watcher->property("pengingCallVariant");
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if (QDBusPendingCall* call = const_cast<QDBusPendingCall*>(DBusResponseWaiter::instance()->extractPendingCall(variant)))
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{
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if (call->isError())
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{
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Q_EMIT error(call->error().message());
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}
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else
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{
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QDBusMessage reply = call->reply();
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if (reply.arguments().count() > 0)
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{
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Q_EMIT success(reply.arguments().at(0));
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}
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else
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{
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Q_EMIT success(QVariant());
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}
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}
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}
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if (m_autodelete)
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{
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deleteLater();
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}
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}
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void DBusAsyncResponse::onTimeout()
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{
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Q_EMIT error(QStringLiteral("timeout when waiting dbus response!"));
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}
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const QDBusPendingCall* DBusResponseWaiter::extractPendingCall(QVariant& variant) const
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{
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for (int type : qAsConst(m_registered))
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{
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if (variant.canConvert(QVariant::Type(type)))
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{
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return reinterpret_cast<const QDBusPendingCall*>(variant.constData());
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}
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}
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return nullptr;
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}
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