Python: Move plugin class definition to .cpp

The plugin classes partially changed there purpose, they are no more
meant to provide internal utility functionality.

Change-Id: I9b9200995eaa95dcd924c94dcedb28e6d5db0be9
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/python/pipsupport.cpp

@@ -221,7 +221,7 @@ QFuture<PipPackageInfo> Pip::info(const PipPackage &package)
 }
 
 Pip::Pip(const Utils::FilePath &python)
-    : QObject(PythonPlugin::instance())
+    : QObject(pluginInstance())
     , m_python(python)
 {}
 

src/plugins/python/pyside.cpp

@@ -81,7 +81,7 @@ QString PySideInstaller::importedPySide(const QString &text)
 }
 
 PySideInstaller::PySideInstaller()
-    : QObject(PythonPlugin::instance())
+    : QObject(pluginInstance())
 {}
 
 void PySideInstaller::installPyside(const FilePath &python,

src/plugins/python/pythonlanguageclient.cpp

@@ -265,7 +265,7 @@ PyLSClient *PyLSClient::clientForPython(const FilePath &python)
 
 PyLSConfigureAssistant *PyLSConfigureAssistant::instance()
 {
-    static auto *instance = new PyLSConfigureAssistant(PythonPlugin::instance());
+    static auto *instance = new PyLSConfigureAssistant(pluginInstance());
     return instance;
 }
 

src/plugins/python/pythonplugin.cpp

@@ -13,6 +13,8 @@
 #include "pythontr.h"
 #include "pythonwizardpage.h"
 
+#include <extensionsystem/iplugin.h>
+
 #include <projectexplorer/buildtargetinfo.h>
 #include <projectexplorer/jsonwizard/jsonwizardfactory.h>
 #include <projectexplorer/kitmanager.h>
@@ -28,7 +30,12 @@ using namespace Utils;
 
 namespace Python::Internal {
 
-static PythonPlugin *m_instance = nullptr;
+static QObject *m_instance = nullptr;
+
+QObject *pluginInstance()
+{
+    return m_instance;
+}
 
 class PythonPluginPrivate
 {
@@ -43,23 +50,25 @@ public:
     PythonWizardPageFactory pythonWizardPageFactory;
 };
 
-PythonPlugin::PythonPlugin()
+class PythonPlugin final : public ExtensionSystem::IPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QtCreatorPlugin" FILE "Python.json")
+
+public:
+    PythonPlugin()
     {
         m_instance = this;
     }
 
-PythonPlugin::~PythonPlugin()
+    ~PythonPlugin() final
     {
         m_instance = nullptr;
         delete d;
     }
 
-PythonPlugin *PythonPlugin::instance()
+private:
-{
+    void initialize() final
-    return m_instance;
-}
-
-void PythonPlugin::initialize()
     {
         d = new PythonPluginPrivate;
 
@@ -70,7 +79,7 @@ void PythonPlugin::initialize()
         ProjectManager::registerProjectType<PythonProject>(Constants::C_PY_PROJECT_MIME_TYPE_LEGACY);
     }
 
-void PythonPlugin::extensionsInitialized()
+    void extensionsInitialized() final
     {
         // Add MIME overlay icons (these icons displayed at Project dock panel)
         const QString imageFile = Utils::creatorTheme()->imageFile(Theme::IconOverlayPro,
@@ -83,4 +92,9 @@ void PythonPlugin::extensionsInitialized()
                               true});
     }
 
+    PythonPluginPrivate *d = nullptr;
+};
+
 } // Python::Internal
+
+#include "pythonplugin.moc"

src/plugins/python/pythonplugin.h

@@ -3,28 +3,10 @@
 
 #pragma once
 
-#include <extensionsystem/iplugin.h>
+#include <QObject>
 
 namespace Python::Internal {
 
-class PythonBuildConfigurationFactory;
+QObject *pluginInstance();
-
-class PythonPlugin final : public ExtensionSystem::IPlugin
-{
-    Q_OBJECT
-    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QtCreatorPlugin" FILE "Python.json")
-
-public:
-    PythonPlugin();
-    ~PythonPlugin() final;
-
-    static PythonPlugin *instance();
-
-private:
-    void initialize() final;
-    void extensionsInitialized() final;
-
-    class PythonPluginPrivate *d = nullptr;
-};
 
 } // Python::Internal

src/plugins/python/pythonsettings.cpp

@@ -642,7 +642,7 @@ static void disableOutdatedPyls()
         disableOutdatedPylsNow();
     } else {
         QObject::connect(PluginManager::instance(), &PluginManager::initializationDone,
-                         PythonPlugin::instance(), &disableOutdatedPylsNow);
+                         pluginInstance(), &disableOutdatedPylsNow);
     }
 }