[applets/showdesktop] Port to declarative type registration

Enables LSP & linting for the QML files.

applets/showdesktop/CMakeLists.txt

@@ -2,16 +2,20 @@ plasma_install_package(package org.kde.plasma.showdesktop)
 
 add_definitions(-DTRANSLATION_DOMAIN="plasma_applet_org.kde.plasma.showdesktop")
 
-set(showdesktop_SRCS
-    plugin/showdesktop.cpp
-    plugin/showdesktopplugin.cpp
+ecm_add_qml_module(showdesktopplugin
+    URI org.kde.plasma.private.showdesktop
+    VERSION 0.1
+    GENERATE_PLUGIN_SOURCE
 )
 
-qt_add_dbus_interface(showdesktop_SRCS plugin/org.kde.KWin.xml kwin_interface)
+qt_add_dbus_interface(showdesktop_SRCS org.kde.KWin.xml kwin_interface)
 
-add_library(showdesktopplugin SHARED ${showdesktop_SRCS})
+target_sources(showdesktopplugin PRIVATE
+    showdesktop.cpp
+    ${showdesktop_SRCS}
+)
 
-target_link_libraries(showdesktopplugin
+target_link_libraries(showdesktopplugin PRIVATE
      Qt::Core
      Qt::DBus
      Qt::Qml
@@ -19,5 +23,4 @@ target_link_libraries(showdesktopplugin
      KF6::WindowSystem
     )
 
-install(TARGETS showdesktopplugin DESTINATION ${KDE_INSTALL_QMLDIR}/org/kde/plasma/private/showdesktop)
-install(FILES plugin/qmldir DESTINATION ${KDE_INSTALL_QMLDIR}/org/kde/plasma/private/showdesktop)
+ecm_finalize_qml_module(showdesktopplugin)

applets/showdesktop/plugin/qmldir

@@ -1,2 +0,0 @@
-module org.kde.plasma.private.showdesktop
-plugin showdesktopplugin

applets/showdesktop/plugin/showdesktopplugin.cpp

@@ -1,18 +0,0 @@
-/*
-    SPDX-FileCopyrightText: 2014 Ashish Madeti <ashishmadeti@gmail.com>
-
-    SPDX-License-Identifier: GPL-2.0-or-later
-*/
-
-#include "showdesktopplugin.h"
-#include "showdesktop.h"
-
-// Qt
-
-void ShowDesktopPlugin::registerTypes(const char *uri)
-{
-    Q_ASSERT(QLatin1String(uri) == QLatin1String("org.kde.plasma.private.showdesktop"));
-    qmlRegisterType<ShowDesktop>(uri, 0, 1, "ShowDesktop");
-}
-
-#include "moc_showdesktopplugin.cpp"

applets/showdesktop/plugin/showdesktopplugin.h

@@ -1,20 +0,0 @@
-/*
-    SPDX-FileCopyrightText: 2014 Ashish Madeti <ashishmadeti@gmail.com>
-
-    SPDX-License-Identifier: GPL-2.0-or-later
-*/
-
-#pragma once
-
-#include <QObject>
-#include <QQmlEngine>
-#include <QQmlExtensionPlugin>
-
-class ShowDesktopPlugin : public QQmlExtensionPlugin
-{
-    Q_OBJECT
-    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QQmlExtensionInterface")
-
-public:
-    void registerTypes(const char *uri) override;
-};

applets/showdesktop/showdesktop.h

@@ -7,12 +7,14 @@
 #pragma once
 
 #include <QObject>
+#include <qqmlintegration.h>
 
 #include "kwin_interface.h"
 
 class ShowDesktop : public QObject
 {
     Q_OBJECT
+    QML_ELEMENT
 
     Q_PROPERTY(bool showingDesktop READ showingDesktop WRITE setShowingDesktop NOTIFY showingDesktopChanged)