CppEditor: Refactor CppCodeModelSettings

Preparation for per-project settings.

Change-Id: I78ecf0cde6150e40353c4aea6a98717d119f05c7
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

5 files changed, 123 insertions, 209 deletions

diff --git a/src/plugins/cppeditor/baseeditordocumentprocessor.cpp b/src/plugins/cppeditor/baseeditordocumentprocessor.cpp
index f48c5a710b..d7da8251ee 100644
--- a/src/plugins/cppeditor/baseeditordocumentprocessor.cpp
+++ b/src/plugins/cppeditor/baseeditordocumentprocessor.cpp
@@ -35,9 +35,9 @@ BaseEditorDocumentProcessor::~BaseEditorDocumentProcessor() = default;
 
 void BaseEditorDocumentProcessor::run(bool projectsUpdated)
 {
-    const Utils::Language languagePreference = codeModelSettings()->interpretAmbigiousHeadersAsCHeaders()
-            ? Utils::Language::C
-            : Utils::Language::Cxx;
+    const Utils::Language languagePreference = codeModelSettings()->interpretAmbigiousHeadersAsC()
+                                                   ? Utils::Language::C
+                                                   : Utils::Language::Cxx;
 
     runImpl({CppModelManager::workingCopy(),
              ProjectExplorer::ProjectManager::startupProject(),
diff --git a/src/plugins/cppeditor/clangdiagnosticconfigsselectionwidget.cpp b/src/plugins/cppeditor/clangdiagnosticconfigsselectionwidget.cpp
index 3a3ceacad4..8cdc803f46 100644
--- a/src/plugins/cppeditor/clangdiagnosticconfigsselectionwidget.cpp
+++ b/src/plugins/cppeditor/clangdiagnosticconfigsselectionwidget.cpp
@@ -90,11 +90,7 @@ void ClangDiagnosticConfigsSelectionWidget::onButtonClicked()
     connect(buttonsBox, &QDialogButtonBox::accepted, &dialog, &QDialog::accept);
     connect(buttonsBox, &QDialogButtonBox::rejected, &dialog, &QDialog::reject);
 
-    const bool previousEnableLowerClazyLevels = codeModelSettings()->enableLowerClazyLevels();
     if (dialog.exec() == QDialog::Accepted) {
-        if (previousEnableLowerClazyLevels != codeModelSettings()->enableLowerClazyLevels())
-            codeModelSettings()->toSettings(Core::ICore::settings());
-
         m_diagnosticConfigsModel = ClangDiagnosticConfigsModel(widget->configs());
         m_currentConfigId = widget->currentConfig().id();
         m_button->setText(widget->currentConfig().displayName());
diff --git a/src/plugins/cppeditor/cppcodemodelsettings.cpp b/src/plugins/cppeditor/cppcodemodelsettings.cpp
index e06272084d..2c57490701 100644
--- a/src/plugins/cppeditor/cppcodemodelsettings.cpp
+++ b/src/plugins/cppeditor/cppcodemodelsettings.cpp
@@ -71,135 +71,98 @@ static FilePath fallbackClangdFilePath()
     return Environment::systemEnvironment().searchInPath("clangd");
 }
 
-void CppCodeModelSettings::fromSettings(QtcSettings *s)
+bool operator==(const CppEditor::CppCodeModelSettings::Data &s1,
+                const CppEditor::CppCodeModelSettings::Data &s2)
 {
-    fromMap(storeFromSettings(Constants::CPPEDITOR_SETTINGSGROUP, s));
-    emit changed();
+    return s1.pchUsage == s2.pchUsage
+           && s1.interpretAmbigiousHeadersAsC == s2.interpretAmbigiousHeadersAsC
+           && s1.skipIndexingBigFiles == s2.skipIndexingBigFiles
+           && s1.useBuiltinPreprocessor == s2.useBuiltinPreprocessor
+           && s1.indexerFileSizeLimitInMb == s2.indexerFileSizeLimitInMb
+           && s1.enableLowerClazyLevels == s2.enableLowerClazyLevels
+           && s1.categorizeFindReferences == s2.categorizeFindReferences
+           && s1.ignoreFiles == s2.ignoreFiles && s1.ignorePattern == s2.ignorePattern;
 }
 
-void CppCodeModelSettings::toSettings(QtcSettings *s)
+Store CppCodeModelSettings::Data::toMap() const
 {
-    storeToSettings(Constants::CPPEDITOR_SETTINGSGROUP, s, toMap());
-    emit changed(); // TODO: Why?
-}
-
-Store CppCodeModelSettings::toMap() const
-{
-    const CppCodeModelSettings def;
+    const CppCodeModelSettings::Data def;
     Store store;
     store.insertValueWithDefault(enableLowerClazyLevelsKey(),
-                                 enableLowerClazyLevels(),
-                                 def.enableLowerClazyLevels());
-    store.insertValueWithDefault(pchUsageKey(), pchUsage(), def.pchUsage());
+                                 enableLowerClazyLevels,
+                                 def.enableLowerClazyLevels);
+    store.insertValueWithDefault(pchUsageKey(), pchUsage, def.pchUsage);
     store.insertValueWithDefault(interpretAmbiguousHeadersAsCHeadersKey(),
-                                 interpretAmbigiousHeadersAsCHeaders(),
-                                 def.interpretAmbigiousHeadersAsCHeaders());
+                                 interpretAmbigiousHeadersAsC,
+                                 def.interpretAmbigiousHeadersAsC);
     store.insertValueWithDefault(skipIndexingBigFilesKey(),
-                                 skipIndexingBigFiles(),
-                                 def.skipIndexingBigFiles());
-    store.insertValueWithDefault(ignoreFilesKey(), ignoreFiles(), def.ignoreFiles());
-    store.insertValueWithDefault(ignorePatternKey(), ignorePattern(), def.ignorePattern());
+                                 skipIndexingBigFiles,
+                                 def.skipIndexingBigFiles);
+    store.insertValueWithDefault(ignoreFilesKey(), ignoreFiles, def.ignoreFiles);
+    store.insertValueWithDefault(ignorePatternKey(), ignorePattern, def.ignorePattern);
     store.insertValueWithDefault(useBuiltinPreprocessorKey(),
-                                 useBuiltinPreprocessor(),
-                                 def.useBuiltinPreprocessor());
+                                 useBuiltinPreprocessor,
+                                 def.useBuiltinPreprocessor);
     store.insertValueWithDefault(indexerFileSizeLimitKey(),
-                                 indexerFileSizeLimitInMb(),
-                                 def.indexerFileSizeLimitInMb());
+                                 indexerFileSizeLimitInMb,
+                                 def.indexerFileSizeLimitInMb);
     return store;
 }
 
-void CppCodeModelSettings::fromMap(const Utils::Store &store)
-{
-    const CppCodeModelSettings def;
-    setEnableLowerClazyLevels(
-        store.value(enableLowerClazyLevelsKey(), def.enableLowerClazyLevels()).toBool());
-    setPCHUsage(static_cast<PCHUsage>(store.value(pchUsageKey(), def.pchUsage()).toInt()));
-    setInterpretAmbigiousHeadersAsCHeaders(store
-                                               .value(interpretAmbiguousHeadersAsCHeadersKey(),
-                                                      def.interpretAmbigiousHeadersAsCHeaders())
-                                               .toBool());
-    setSkipIndexingBigFiles(
-        store.value(skipIndexingBigFilesKey(), def.skipIndexingBigFiles()).toBool());
-    setIgnoreFiles(store.value(ignoreFilesKey(), def.ignoreFiles()).toBool());
-    setIgnorePattern(store.value(ignorePatternKey(), def.ignorePattern()).toString());
-    setUseBuiltinPreprocessor(
-        store.value(useBuiltinPreprocessorKey(), def.useBuiltinPreprocessor()).toBool());
-    setIndexerFileSizeLimitInMb(
-        store.value(indexerFileSizeLimitKey(), def.indexerFileSizeLimitInMb()).toInt());
-}
-
-CppCodeModelSettings::PCHUsage CppCodeModelSettings::pchUsage() const
-{
-    return m_pchUsage;
-}
-
-void CppCodeModelSettings::setPCHUsage(CppCodeModelSettings::PCHUsage pchUsage)
-{
-    m_pchUsage = pchUsage;
-}
-
-bool CppCodeModelSettings::interpretAmbigiousHeadersAsCHeaders() const
-{
-    return m_interpretAmbigiousHeadersAsCHeaders;
-}
-
-void CppCodeModelSettings::setInterpretAmbigiousHeadersAsCHeaders(bool yesno)
-{
-    m_interpretAmbigiousHeadersAsCHeaders = yesno;
-}
-
-bool CppCodeModelSettings::skipIndexingBigFiles() const
+void CppCodeModelSettings::Data::fromMap(const Utils::Store &store)
 {
-    return m_skipIndexingBigFiles;
+    const CppCodeModelSettings::Data def;
+    enableLowerClazyLevels
+        = store.value(enableLowerClazyLevelsKey(), def.enableLowerClazyLevels).toBool();
+    pchUsage = static_cast<PCHUsage>(store.value(pchUsageKey(), def.pchUsage).toInt());
+    interpretAmbigiousHeadersAsC = store
+                                       .value(interpretAmbiguousHeadersAsCHeadersKey(),
+                                              def.interpretAmbigiousHeadersAsC)
+                                       .toBool();
+    skipIndexingBigFiles = store.value(skipIndexingBigFilesKey(), def.skipIndexingBigFiles).toBool();
+    ignoreFiles = store.value(ignoreFilesKey(), def.ignoreFiles).toBool();
+    ignorePattern = store.value(ignorePatternKey(), def.ignorePattern).toString();
+    useBuiltinPreprocessor
+        = store.value(useBuiltinPreprocessorKey(), def.useBuiltinPreprocessor).toBool();
+    indexerFileSizeLimitInMb
+        = store.value(indexerFileSizeLimitKey(), def.indexerFileSizeLimitInMb).toInt();
 }
 
-void CppCodeModelSettings::setSkipIndexingBigFiles(bool yesno)
-{
-    m_skipIndexingBigFiles = yesno;
-}
-
-int CppCodeModelSettings::indexerFileSizeLimitInMb() const
-{
-    return m_indexerFileSizeLimitInMB;
-}
-
-void CppCodeModelSettings::setIndexerFileSizeLimitInMb(int sizeInMB)
-{
-    m_indexerFileSizeLimitInMB = sizeInMB;
-}
-
-bool CppCodeModelSettings::ignoreFiles() const
-{
-   return m_ignoreFiles;
-}
-
-void CppCodeModelSettings::setIgnoreFiles(bool ignoreFiles)
+void CppCodeModelSettings::fromSettings(QtcSettings *s)
 {
-    m_ignoreFiles = ignoreFiles;
+    m_data.fromMap(storeFromSettings(Constants::CPPEDITOR_SETTINGSGROUP, s));
+    emit changed();
 }
 
-QString CppCodeModelSettings::ignorePattern() const
+void CppCodeModelSettings::toSettings(QtcSettings *s)
 {
-   return m_ignorePattern;
+    storeToSettings(Constants::CPPEDITOR_SETTINGSGROUP, s, m_data.toMap());
+    emit changed(); // TODO: Why?
 }
 
-void CppCodeModelSettings::setIgnorePattern(const QString& ignorePattern)
+void CppCodeModelSettings::setData(const Data &data)
 {
-    m_ignorePattern = ignorePattern;
+    if (m_data != data) {
+        m_data = data;
+        toSettings(Core::ICore::settings());
+        emit changed();
+    }
 }
 
-
-bool CppCodeModelSettings::enableLowerClazyLevels() const
+void CppCodeModelSettings::setEnableLowerClazyLevels(bool enable)
 {
-    return m_enableLowerClazyLevels;
+    Data d = data();
+    d.enableLowerClazyLevels = enable;
+    setData(d);
 }
 
-void CppCodeModelSettings::setEnableLowerClazyLevels(bool yesno)
+void CppCodeModelSettings::setCategorizeFindReferences(bool categorize)
 {
-    m_enableLowerClazyLevels = yesno;
+    Data d = data();
+    d.categorizeFindReferences = categorize;
+    setData(d);
 }
 
-
 QString ClangdSettings::priorityToString(const IndexingPriority &priority)
 {
     switch (priority) {
diff --git a/src/plugins/cppeditor/cppcodemodelsettings.h b/src/plugins/cppeditor/cppcodemodelsettings.h
index fbca534c38..c81fbda6f0 100644
--- a/src/plugins/cppeditor/cppcodemodelsettings.h
+++ b/src/plugins/cppeditor/cppcodemodelsettings.h
@@ -34,54 +34,56 @@ public:
         PchUse_BuildSystem = 2
     };
 
-    CppCodeModelSettings(Utils::QtcSettings *s) { fromSettings(s); }
-
-    void toSettings(Utils::QtcSettings *s);
-
-    bool enableLowerClazyLevels() const;
-    void setEnableLowerClazyLevels(bool yesno);
+    class Data
+    {
+    public:
+        Utils::Store toMap() const;
+        void fromMap(const Utils::Store &store);
 
-    PCHUsage pchUsage() const;
-    void setPCHUsage(PCHUsage pchUsage);
+        friend bool operator==(const Data &s1, const Data &s2);
+        friend bool operator!=(const Data &s1, const Data &s2) { return !(s1 == s2); }
 
-    bool interpretAmbigiousHeadersAsCHeaders() const;
-    void setInterpretAmbigiousHeadersAsCHeaders(bool yesno);
+        PCHUsage pchUsage = PchUse_BuildSystem;
+        bool interpretAmbigiousHeadersAsC = false;
+        bool skipIndexingBigFiles = true;
+        bool useBuiltinPreprocessor = true;
+        int indexerFileSizeLimitInMb = 5;
+        bool enableLowerClazyLevels = true;    // For UI behavior only
+        bool categorizeFindReferences = false; // Ephemeral!
+        bool ignoreFiles = false;
+        QString ignorePattern;
+    };
 
-    bool skipIndexingBigFiles() const;
-    void setSkipIndexingBigFiles(bool yesno);
+    CppCodeModelSettings(Utils::QtcSettings *s) { fromSettings(s); }
 
-    bool useBuiltinPreprocessor() const { return m_useBuiltinPreprocessor; }
-    void setUseBuiltinPreprocessor(bool useBuiltin) { m_useBuiltinPreprocessor = useBuiltin; }
+    void setData(const Data &data);
+    Data data() const { return m_data; }
 
-    int indexerFileSizeLimitInMb() const;
-    void setIndexerFileSizeLimitInMb(int sizeInMB);
+    bool enableLowerClazyLevels() const { return m_data.enableLowerClazyLevels; }
+    PCHUsage pchUsage() const { return m_data.pchUsage; }
+    bool interpretAmbigiousHeadersAsC() const { return m_data.interpretAmbigiousHeadersAsC; }
+    bool skipIndexingBigFiles() const { return m_data.skipIndexingBigFiles; }
+    bool useBuiltinPreprocessor() const { return m_data.useBuiltinPreprocessor; }
+    int indexerFileSizeLimitInMb() const { return m_data.indexerFileSizeLimitInMb; }
+    bool categorizeFindReferences() const { return m_data.categorizeFindReferences; }
+    bool ignoreFiles() const { return m_data.ignoreFiles; }
+    QString ignorePattern() const { return m_data.ignorePattern; }
 
-    void setCategorizeFindReferences(bool categorize) { m_categorizeFindReferences = categorize; }
-    bool categorizeFindReferences() const { return m_categorizeFindReferences; }
+    // FIXME: Doesn't belong here.
+    void setEnableLowerClazyLevels(bool enable);
 
-    bool ignoreFiles() const;
-    void setIgnoreFiles(bool ignoreFiles);
-    QString ignorePattern() const;
-    void setIgnorePattern(const QString& ignorePattern);
+    void setCategorizeFindReferences(bool categorize);
 
 signals:
     void changed();
 
 private:
     CppCodeModelSettings() = default;
+
+    void toSettings(Utils::QtcSettings *s);
     void fromSettings(Utils::QtcSettings *s);
-    Utils::Store toMap() const;
-    void fromMap(const Utils::Store &store);
-
-    PCHUsage m_pchUsage = PchUse_BuildSystem;
-    bool m_interpretAmbigiousHeadersAsCHeaders = false;
-    bool m_skipIndexingBigFiles = true;
-    bool m_useBuiltinPreprocessor = true;
-    int m_indexerFileSizeLimitInMB = 5;
-    bool m_enableLowerClazyLevels = true; // For UI behavior only
-    bool m_categorizeFindReferences = false; // Ephemeral!
-    bool m_ignoreFiles = false;
-    QString m_ignorePattern;
+
+    Data m_data;
 };
 
 class CPPEDITOR_EXPORT ClangdSettings : public QObject
diff --git a/src/plugins/cppeditor/cppcodemodelsettingspage.cpp b/src/plugins/cppeditor/cppcodemodelsettingspage.cpp
index b4a19ccaae..b267b66242 100644
--- a/src/plugins/cppeditor/cppcodemodelsettingspage.cpp
+++ b/src/plugins/cppeditor/cppcodemodelsettingspage.cpp
@@ -51,14 +51,13 @@ namespace CppEditor::Internal {
 class CppCodeModelSettingsWidget final : public Core::IOptionsPageWidget
 {
 public:
-    CppCodeModelSettingsWidget();
+    CppCodeModelSettingsWidget(const CppCodeModelSettings::Data &data);
 
 private:
-    void apply() final;
+    void apply() final { codeModelSettings()->setData(data()); }
 
-    bool applyGeneralWidgetsToSettings() const;
+    CppCodeModelSettings::Data data() const;
 
-    CppCodeModelSettings *m_settings = nullptr;
     QCheckBox *m_interpretAmbiguousHeadersAsCHeaders;
     QCheckBox *m_ignorePchCheckBox;
     QCheckBox *m_useBuiltinPreprocessorCheckBox;
@@ -68,19 +67,18 @@ private:
     QPlainTextEdit *m_ignorePatternTextEdit;
 };
 
-CppCodeModelSettingsWidget::CppCodeModelSettingsWidget()
-    : m_settings(&cppCodeModelSettings())
+CppCodeModelSettingsWidget::CppCodeModelSettingsWidget(const CppCodeModelSettings::Data &data)
 {
     m_interpretAmbiguousHeadersAsCHeaders
         = new QCheckBox(Tr::tr("Interpret ambiguous headers as C headers"));
 
     m_skipIndexingBigFilesCheckBox = new QCheckBox(Tr::tr("Do not index files greater than"));
-    m_skipIndexingBigFilesCheckBox->setChecked(m_settings->skipIndexingBigFiles());
+    m_skipIndexingBigFilesCheckBox->setChecked(data.skipIndexingBigFiles);
 
     m_bigFilesLimitSpinBox = new QSpinBox;
     m_bigFilesLimitSpinBox->setSuffix(Tr::tr("MB"));
     m_bigFilesLimitSpinBox->setRange(1, 500);
-    m_bigFilesLimitSpinBox->setValue(m_settings->indexerFileSizeLimitInMb());
+    m_bigFilesLimitSpinBox->setValue(data.indexerFileSizeLimitInMb);
 
     m_ignoreFilesCheckBox = new QCheckBox(Tr::tr("Ignore files"));
     m_ignoreFilesCheckBox->setToolTip(
@@ -88,8 +86,8 @@ CppCodeModelSettingsWidget::CppCodeModelSettingsWidget()
         + Tr::tr("Ignore files that match these wildcard patterns, one wildcard per line.")
         + "</p></body></html>");
 
-    m_ignoreFilesCheckBox->setChecked(m_settings->ignoreFiles());
-    m_ignorePatternTextEdit = new QPlainTextEdit(m_settings->ignorePattern());
+    m_ignoreFilesCheckBox->setChecked(data.ignoreFiles);
+    m_ignorePatternTextEdit = new QPlainTextEdit(data.ignorePattern);
     m_ignorePatternTextEdit->setToolTip(m_ignoreFilesCheckBox->toolTip());
     m_ignorePatternTextEdit->setEnabled(m_ignoreFilesCheckBox->isChecked());
 
@@ -109,11 +107,9 @@ CppCodeModelSettingsWidget::CppCodeModelSettingsWidget()
             (Tr::tr("Uncheck this to invoke the actual compiler "
                     "to show a pre-processed source file in the editor."));
 
-    m_interpretAmbiguousHeadersAsCHeaders->setChecked(
-                m_settings->interpretAmbigiousHeadersAsCHeaders());
-
-    m_ignorePchCheckBox->setChecked(m_settings->pchUsage() == CppCodeModelSettings::PchUse_None);
-    m_useBuiltinPreprocessorCheckBox->setChecked(m_settings->useBuiltinPreprocessor());
+    m_interpretAmbiguousHeadersAsCHeaders->setChecked(data.interpretAmbigiousHeadersAsC);
+    m_ignorePchCheckBox->setChecked(data.pchUsage == CppCodeModelSettings::PchUse_None);
+    m_useBuiltinPreprocessorCheckBox->setChecked(data.useBuiltinPreprocessor);
 
     using namespace Layouting;
 
@@ -132,61 +128,18 @@ CppCodeModelSettingsWidget::CppCodeModelSettingsWidget()
     }.attachTo(this);
 }
 
-void CppCodeModelSettingsWidget::apply()
-{
-    if (applyGeneralWidgetsToSettings())
-        m_settings->toSettings(Core::ICore::settings());
-}
-
-bool CppCodeModelSettingsWidget::applyGeneralWidgetsToSettings() const
+CppCodeModelSettings::Data CppCodeModelSettingsWidget::data() const
 {
-    bool settingsChanged = false;
-
-    const bool newInterpretAmbiguousHeaderAsCHeaders
-            = m_interpretAmbiguousHeadersAsCHeaders->isChecked();
-    if (m_settings->interpretAmbigiousHeadersAsCHeaders()
-            != newInterpretAmbiguousHeaderAsCHeaders) {
-        m_settings->setInterpretAmbigiousHeadersAsCHeaders(newInterpretAmbiguousHeaderAsCHeaders);
-        settingsChanged = true;
-    }
-
-    const bool newSkipIndexingBigFiles = m_skipIndexingBigFilesCheckBox->isChecked();
-    if (m_settings->skipIndexingBigFiles() != newSkipIndexingBigFiles) {
-        m_settings->setSkipIndexingBigFiles(newSkipIndexingBigFiles);
-        settingsChanged = true;
-    }
-    const bool newUseBuiltinPreprocessor = m_useBuiltinPreprocessorCheckBox->isChecked();
-    if (m_settings->useBuiltinPreprocessor() != newUseBuiltinPreprocessor) {
-        m_settings->setUseBuiltinPreprocessor(newUseBuiltinPreprocessor);
-        settingsChanged = true;
-    }
-    const bool ignoreFiles = m_ignoreFilesCheckBox->isChecked();
-    if (m_settings->ignoreFiles() != ignoreFiles) {
-        m_settings->setIgnoreFiles(ignoreFiles);
-        settingsChanged = true;
-    }
-    const QString ignorePattern = m_ignorePatternTextEdit->toPlainText();
-    if (m_settings->ignorePattern() != ignorePattern) {
-        m_settings->setIgnorePattern(ignorePattern);
-        settingsChanged = true;
-    }
-    const int newFileSizeLimit = m_bigFilesLimitSpinBox->value();
-    if (m_settings->indexerFileSizeLimitInMb() != newFileSizeLimit) {
-        m_settings->setIndexerFileSizeLimitInMb(newFileSizeLimit);
-        settingsChanged = true;
-    }
-
-    const bool newIgnorePch = m_ignorePchCheckBox->isChecked();
-    const bool previousIgnorePch = m_settings->pchUsage() == CppCodeModelSettings::PchUse_None;
-    if (newIgnorePch != previousIgnorePch) {
-        const CppCodeModelSettings::PCHUsage pchUsage = m_ignorePchCheckBox->isChecked()
-                ? CppCodeModelSettings::PchUse_None
-                : CppCodeModelSettings::PchUse_BuildSystem;
-        m_settings->setPCHUsage(pchUsage);
-        settingsChanged = true;
-    }
-
-    return settingsChanged;
+    CppCodeModelSettings::Data data;
+    data.interpretAmbigiousHeadersAsC = m_interpretAmbiguousHeadersAsCHeaders->isChecked();
+    data.skipIndexingBigFiles = m_skipIndexingBigFilesCheckBox->isChecked();
+    data.useBuiltinPreprocessor = m_useBuiltinPreprocessorCheckBox->isChecked();
+    data.ignoreFiles = m_ignoreFilesCheckBox->isChecked();
+    data.ignorePattern = m_ignorePatternTextEdit->toPlainText();
+    data.indexerFileSizeLimitInMb = m_bigFilesLimitSpinBox->value();
+    data.pchUsage = m_ignorePchCheckBox->isChecked() ? CppCodeModelSettings::PchUse_None
+                                                     : CppCodeModelSettings::PchUse_BuildSystem;
+    return data;
 }
 
 class CppCodeModelSettingsPage final : public Core::IOptionsPage
@@ -199,7 +152,7 @@ public:
         setCategory(Constants::CPP_SETTINGS_CATEGORY);
         setDisplayCategory(Tr::tr("C++"));
         setCategoryIconPath(":/projectexplorer/images/settingscategory_cpp.png");
-        setWidgetCreator([] { return new CppCodeModelSettingsWidget; });
+        setWidgetCreator([] { return new CppCodeModelSettingsWidget(codeModelSettings()->data()); });
     }
 };