Meson: Move some code out of visible plugin setup

Background for the activity here is that this plugin's setup activities
take on my machine around 0.2s on Creator during Creator startup and
I'd like to reduce that a bit.

Change-Id: I880a0b5ce5c4dce52a041b6a3ef9dc3cef346adb
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/plugins/mesonprojectmanager/mesonprojectplugin.cpp

@@ -12,36 +12,20 @@
 #include "toolssettingsaccessor.h"
 #include "toolssettingspage.h"
 
-#include <coreplugin/icore.h>
-
 #include <projectexplorer/projectexplorerconstants.h>
 #include <projectexplorer/projectmanager.h>
 #include <projectexplorer/runcontrol.h>
 
 #include <utils/fsengine/fileiconprovider.h>
 
-using namespace Core;
 using namespace ProjectExplorer;
 using namespace Utils;
 
 namespace MesonProjectManager::Internal {
 
-class MesonProjectPluginPrivate : public QObject
+class MesonProjectPluginPrivate
 {
-    Q_OBJECT
 public:
-    MesonProjectPluginPrivate()
-    {
-        MesonTools::setTools(m_toolsSettings.loadMesonTools(ICore::dialogParent()));
-        connect(ICore::instance(),
-                &ICore::saveSettingsRequested,
-                this,
-                &MesonProjectPluginPrivate::saveAll);
-    }
-
-    ~MesonProjectPluginPrivate() {}
-
-private:
     ToolsSettingsPage m_toolslSettingsPage;
     ToolsSettingsAccessor m_toolsSettings;
     MesonBuildStepFactory m_buildStepFactory;
@@ -50,11 +34,6 @@ private:
     MesonActionsManager m_actions;
     MachineFileManager m_machineFilesManager;
     SimpleTargetRunnerFactory m_mesonRunWorkerFactory{{m_runConfigurationFactory.runConfigurationId()}};
-
-    void saveAll()
-    {
-        m_toolsSettings.saveMesonTools(MesonTools::tools(), ICore::dialogParent());
-    }
 };
 
 MesonProjectPlugin::~MesonProjectPlugin()
@@ -72,5 +51,3 @@ void MesonProjectPlugin::initialize()
 }
 
 } // MesonProjectManager::Internal
-
-#include "mesonprojectplugin.moc"

src/plugins/mesonprojectmanager/toolssettingsaccessor.cpp

@@ -6,6 +6,7 @@
 #include "mesonpluginconstants.h"
 #include "mesonprojectmanagertr.h"
 
+#include <coreplugin/icore.h>
 #include <coreplugin/icore.h>
 
 #include <utils/filepath.h>
@@ -16,6 +17,7 @@
 #include <iterator>
 #include <vector>
 
+using namespace Core;
 using namespace Utils;
 
 namespace MesonProjectManager {
@@ -30,11 +32,16 @@ ToolsSettingsAccessor::ToolsSettingsAccessor()
 {
     setDocType("QtCreatorMesonTools");
     setApplicationDisplayName(QGuiApplication::applicationDisplayName());
-    setBaseFilePath(Core::ICore::userResourcePath(Constants::ToolsSettings::FILENAME));
+    setBaseFilePath(ICore::userResourcePath(Constants::ToolsSettings::FILENAME));
+
+    MesonTools::setTools(loadMesonTools());
+
+    QObject::connect(ICore::instance(), &ICore::saveSettingsRequested, [this] {
+        saveMesonTools(MesonTools::tools());
+    });
 }
 
-void ToolsSettingsAccessor::saveMesonTools(const std::vector<MesonTools::Tool_t> &tools,
-                                           QWidget *parent)
+void ToolsSettingsAccessor::saveMesonTools(const std::vector<MesonTools::Tool_t> &tools)
 {
     using namespace Constants;
     Store data;
@@ -51,13 +58,13 @@ void ToolsSettingsAccessor::saveMesonTools(const std::vector<MesonTools::Tool_t>
         entry_count++;
     }
     data.insert(ToolsSettings::ENTRY_COUNT, entry_count);
-    saveSettings(data, parent);
+    saveSettings(data, ICore::dialogParent());
 }
 
-std::vector<MesonTools::Tool_t> ToolsSettingsAccessor::loadMesonTools(QWidget *parent)
+std::vector<MesonTools::Tool_t> ToolsSettingsAccessor::loadMesonTools()
 {
     using namespace Constants;
-    auto data = restoreSettings(parent);
+    auto data = restoreSettings(ICore::dialogParent());
     auto entry_count = data.value(ToolsSettings::ENTRY_COUNT, 0).toInt();
     std::vector<MesonTools::Tool_t> result;
     for (auto toolIndex = 0; toolIndex < entry_count; toolIndex++) {

src/plugins/mesonprojectmanager/toolssettingsaccessor.h

@@ -14,8 +14,9 @@ class ToolsSettingsAccessor final : public Utils::UpgradingSettingsAccessor
 {
 public:
     ToolsSettingsAccessor();
-    void saveMesonTools(const std::vector<MesonTools::Tool_t> &tools, QWidget *parent);
-    std::vector<MesonTools::Tool_t> loadMesonTools(QWidget *parent);
+
+    void saveMesonTools(const std::vector<MesonTools::Tool_t> &tools);
+    std::vector<MesonTools::Tool_t> loadMesonTools();
 };
 
 } // namespace Internal