Don't use kcmshell5 for opening the KCM

Summary:
kcmshell5 depends on plasma-workspace. By using our own tiny wrapper for opening the KCM we avoid pulling
in plasma-workspace and everything that comes with it on non-Plasma systems.

Test Plan: kdeconnect-settings shows the KCM

Reviewers: #kde_connect, sredman

Reviewed By: #kde_connect, sredman

Subscribers: sredman, kdeconnect

Tags: #kde_connect

Differential Revision: https://phabricator.kde.org/D17383

kcm/CMakeLists.txt

@@ -9,6 +9,10 @@ set(kcm_SRCS
     kcm.cpp
 )
 
+set(kcm_wrapper_SRCS main.cpp)
+add_executable(kdeconnect-settings ${kcm_wrapper_SRCS})
+target_link_libraries(kdeconnect-settings KF5::I18n KF5::KCMUtils)
+
 ki18n_wrap_ui(kcm_SRCS kcm.ui)
 
 add_library(kcm_kdeconnect MODULE ${kcm_SRCS})
@@ -22,6 +26,7 @@ target_link_libraries(kcm_kdeconnect
 )
 
 install(TARGETS kcm_kdeconnect DESTINATION ${PLUGIN_INSTALL_DIR})
+install(TARGETS kdeconnect-settings ${INSTALL_TARGETS_DEFAULT_ARGS})
 
 install(FILES org.kde.kdeconnect.kcm.desktop DESTINATION ${XDG_APPS_INSTALL_DIR})
 install(FILES kcm_kdeconnect.desktop DESTINATION ${SERVICES_INSTALL_DIR})

kcm/main.cpp

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2018 Nicolas Fella <nicolas.fella@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License or (at your option) version 3 or any later version
+ * accepted by the membership of KDE e.V. (or its successor approved
+ * by the membership of KDE e.V.), which shall act as a proxy
+ * defined in Section 14 of version 3 of the license.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QApplication>
+
+#include <KCMultiDialog>
+#include <KAboutData>
+#include <KLocalizedString>
+#include "kdeconnect-version.h"
+
+int main(int argc, char** argv)
+{
+    QApplication app(argc, argv);
+    KAboutData about("kdeconnect-settings",
+                     i18n("KDE Connect Settings"),
+                     QStringLiteral(KDECONNECT_VERSION_STRING),
+                     i18n("KDE Connect Settings"),
+                     KAboutLicense::GPL,
+                     i18n("(C) 2018 Nicolas Fella"));
+    KAboutData::setApplicationData(about);
+
+    KCMultiDialog* dialog = new KCMultiDialog;
+    dialog->addModule("kcm_kdeconnect");
+    dialog->setAttribute(Qt::WA_DeleteOnClose);
+    dialog->show();
+
+    app.setQuitOnLastWindowClosed(true);
+
+    return app.exec();
+}
+

kcm/org.kde.kdeconnect.kcm.desktop

@@ -2,7 +2,7 @@
 Type=Application
 Icon=kdeconnect
 Terminal=false
-Exec=kcmshell5 kcm_kdeconnect
+Exec=kdeconnect-settings
 Name=KDE Connect Settings
 Name[ar]=إعدادات كدي المتّصل
 Name[ca]=Arranjament del KDE Connect