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calamares/3rdparty/kdsingleapplication/kdsingleapplication.cpp

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+/*
+    MIT License
+
+    Copyright (C) 2019-2021 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE.
+*/
+
+#include "kdsingleapplication.h"
+
+#include <QtCore/QCoreApplication>
+#include <QtCore/QFileInfo>
+
+// TODO: make this pluggable.
+#include "kdsingleapplication_localsocket_p.h"
+
+// Avoiding dragging in Qt private APIs for now, so this does not inherit
+// from QObjectPrivate.
+class KDSingleApplicationPrivate
+{
+public:
+    explicit KDSingleApplicationPrivate(const QString &name, KDSingleApplication *q);
+
+    void initialize();
+
+    QString name() const
+    {
+        return m_name;
+    }
+
+    bool isPrimaryInstance() const
+    {
+        return m_impl.isPrimaryInstance();
+    }
+
+    bool sendMessage(const QByteArray &message, int timeout)
+    {
+        return m_impl.sendMessage(message, timeout);
+    }
+
+private:
+    Q_DECLARE_PUBLIC(KDSingleApplication)
+
+    KDSingleApplication *q_ptr;
+    QString m_name;
+
+    KDSingleApplicationLocalSocket m_impl;
+};
+
+KDSingleApplicationPrivate::KDSingleApplicationPrivate(const QString &name, KDSingleApplication *q)
+    : q_ptr(q)
+    , m_name(name)
+    , m_impl(name)
+{
+    if (Q_UNLIKELY(name.isEmpty()))
+        qFatal("KDSingleApplication requires a non-empty application name");
+
+    if (isPrimaryInstance()) {
+        QObject::connect(&m_impl, &KDSingleApplicationLocalSocket::messageReceived,
+                         q, &KDSingleApplication::messageReceived);
+    }
+}
+
+static QString extractExecutableName(const QString &applicationFilePath)
+{
+    return QFileInfo(applicationFilePath).fileName();
+}
+
+KDSingleApplication::KDSingleApplication(QObject *parent)
+    : KDSingleApplication(extractExecutableName(QCoreApplication::applicationFilePath()), parent)
+{
+}
+
+KDSingleApplication::KDSingleApplication(const QString &name, QObject *parent)
+    : QObject(parent)
+    , d_ptr(new KDSingleApplicationPrivate(name, this))
+{
+}
+
+QString KDSingleApplication::name() const
+{
+    Q_D(const KDSingleApplication);
+    return d->name();
+}
+
+bool KDSingleApplication::isPrimaryInstance() const
+{
+    Q_D(const KDSingleApplication);
+    return d->isPrimaryInstance();
+}
+
+bool KDSingleApplication::sendMessage(const QByteArray &message)
+{
+    return sendMessageWithTimeout(message, 5000);
+}
+
+bool KDSingleApplication::sendMessageWithTimeout(const QByteArray &message, int timeout)
+{
+    Q_ASSERT(!isPrimaryInstance());
+
+    Q_D(KDSingleApplication);
+    return d->sendMessage(message, timeout);
+}
+
+
+KDSingleApplication::~KDSingleApplication() = default;
+