refactor: Remove singleapplicationui class

This only protected the UI settings but it likely required for many
other settings as well, if done propertly. Do reduce complexity =>
remove for now

src/gui/CMakeLists.txt

@@ -772,8 +772,6 @@ add_library(gui SHARED
         showhidebar.cpp
         showhidebar.h
         showhidebar.ui
-        singleapplicationui.cpp
-        singleapplicationui.h
         splashscreen.cpp
         splashscreen.h
         stylesheetutility.cpp

src/gui/components/settingsguicomponent.cpp

@@ -21,8 +21,7 @@ using namespace swift::core::context;
 
 namespace swift::gui::components
 {
-    CSettingsGuiComponent::CSettingsGuiComponent(QWidget *parent)
+    CSettingsGuiComponent::CSettingsGuiComponent(QWidget *parent) : QFrame(parent), ui(new Ui::CSettingsGuiComponent)
-        : QFrame(parent), swift::gui::CSingleApplicationUi(this), ui(new Ui::CSettingsGuiComponent)
     {
         ui->setupUi(this);
 

src/gui/components/settingsguicomponent.h

@@ -10,7 +10,6 @@
 #include <QScopedPointer>
 
 #include "gui/settings/guisettings.h"
-#include "gui/singleapplicationui.h"
 
 namespace Ui
 {
@@ -21,7 +20,7 @@ namespace swift::gui::components
     /*!
      * General GUI settings
      */
-    class CSettingsGuiComponent : public QFrame, public swift::gui::CSingleApplicationUi
+    class CSettingsGuiComponent : public QFrame
     {
         Q_OBJECT
 

src/gui/singleapplicationui.cpp

@@ -1,29 +0,0 @@
-// SPDX-FileCopyrightText: Copyright (C) 2017 swift Project Community / Contributors
-// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-swift-pilot-client-1
-
-#include "singleapplicationui.h"
-
-#include <QWidget>
-
-#include "gui/guiapplication.h"
-
-using namespace swift::misc;
-
-namespace swift::gui
-{
-    CSingleApplicationUi::CSingleApplicationUi(QWidget *ui) : m_ui(ui)
-    {
-        QObject::connect(&m_timer, &QTimer::timeout, [=] { this->evaluate(); });
-        m_timer.setInterval(5000);
-        m_timer.start();
-    }
-
-    void CSingleApplicationUi::evaluate()
-    {
-        if (!sGui) { return; }
-        if (!m_ui) { return; }
-        const CApplicationInfoList apps = sGui->getRunningApplications();
-        const bool enable = apps.size() < 2;
-        m_ui->setEnabled(enable);
-    }
-} // namespace swift::gui

src/gui/singleapplicationui.h

@@ -1,36 +0,0 @@
-// SPDX-FileCopyrightText: Copyright (C) 2017 swift Project Community / Contributors
-// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-swift-pilot-client-1
-
-//! \file
-
-#ifndef SWIFT_GUI_SINGLEAPPLICATIONUI_H
-#define SWIFT_GUI_SINGLEAPPLICATIONUI_H
-
-#include <QTimer>
-
-class QWidget;
-
-namespace swift::gui
-{
-    /*!
-     * Enable / disable UI depending on how many swift applications are running
-     */
-    class CSingleApplicationUi
-    {
-    public:
-        //! Constructor
-        CSingleApplicationUi(QWidget *ui);
-
-        //! Set UI widget
-        void setWidget(QWidget *ui) { m_ui = ui; }
-
-    private:
-        //! Evaluate if
-        void evaluate();
-
-        QTimer m_timer;
-        QWidget *m_ui = nullptr; //!< enabled/disabled UI
-    };
-} // namespace swift::gui
-
-#endif // SWIFT_GUI_SINGLEAPPLICATIONUI_H