Use Core::Id for language

Change-Id: I0077558e9e2cf5aa06ac921cb45224e29aa85c9b
Reviewed-by: hjk <qthjk@ovi.com>

17 files changed, 77 insertions, 69 deletions

diff --git a/src/plugins/cppeditor/cppplugin.cpp b/src/plugins/cppeditor/cppplugin.cpp
index aaed8e0f194..2a1b452a13d 100644
--- a/src/plugins/cppeditor/cppplugin.cpp
+++ b/src/plugins/cppeditor/cppplugin.cpp
@@ -150,7 +150,7 @@ void CppPlugin::initializeEditor(CPPEditorWidget *editor)
 {
     m_actionHandler->setupActions(editor);
 
-    editor->setLanguageSettingsId(QLatin1String(CppTools::Constants::CPP_SETTINGS_ID));
+    editor->setLanguageSettingsId(CppTools::Constants::CPP_SETTINGS_ID);
     TextEditor::TextEditorSettings::instance()->initializeEditor(editor);
 
     // method combo box sorting
diff --git a/src/plugins/cpptools/cppcodestylepreferencesfactory.cpp b/src/plugins/cpptools/cppcodestylepreferencesfactory.cpp
index bf11ee4380d..d2a6b4c72d0 100644
--- a/src/plugins/cpptools/cppcodestylepreferencesfactory.cpp
+++ b/src/plugins/cpptools/cppcodestylepreferencesfactory.cpp
@@ -91,7 +91,7 @@ CppCodeStylePreferencesFactory::CppCodeStylePreferencesFactory()
 {
 }
 
-QString CppCodeStylePreferencesFactory::languageId()
+Core::Id CppCodeStylePreferencesFactory::languageId()
 {
     return Constants::CPP_SETTINGS_ID;
 }
diff --git a/src/plugins/cpptools/cppcodestylepreferencesfactory.h b/src/plugins/cpptools/cppcodestylepreferencesfactory.h
index 23f45241e72..a5f9987200c 100644
--- a/src/plugins/cpptools/cppcodestylepreferencesfactory.h
+++ b/src/plugins/cpptools/cppcodestylepreferencesfactory.h
@@ -39,14 +39,14 @@ class CppCodeStylePreferencesFactory : public TextEditor::ICodeStylePreferencesF
 public:
     CppCodeStylePreferencesFactory();
 
-    virtual QString languageId();
-    virtual QString displayName();
-    virtual TextEditor::ICodeStylePreferences *createCodeStyle() const;
-    virtual QWidget *createEditor(TextEditor::ICodeStylePreferences *settings,
-                                  QWidget *parent) const;
-    virtual TextEditor::Indenter *createIndenter() const;
-    virtual TextEditor::ISnippetProvider *snippetProvider() const;
-    virtual QString previewText() const;
+    Core::Id languageId();
+    QString displayName();
+    TextEditor::ICodeStylePreferences *createCodeStyle() const;
+    QWidget *createEditor(TextEditor::ICodeStylePreferences *settings,
+                          QWidget *parent) const;
+    TextEditor::Indenter *createIndenter() const;
+    TextEditor::ISnippetProvider *snippetProvider() const;
+    QString previewText() const;
 };
 
 } // namespace CppTools
diff --git a/src/plugins/projectexplorer/codestylesettingspropertiespage.cpp b/src/plugins/projectexplorer/codestylesettingspropertiespage.cpp
index bcb16f1f88f..9af139bbce5 100644
--- a/src/plugins/projectexplorer/codestylesettingspropertiespage.cpp
+++ b/src/plugins/projectexplorer/codestylesettingspropertiespage.cpp
@@ -76,13 +76,13 @@ CodeStyleSettingsWidget::CodeStyleSettingsWidget(Project *project) : QWidget(),
 
     const EditorConfiguration *config = m_project->editorConfiguration();
 
-    QMap<QString, ICodeStylePreferencesFactory *> factories
+    QMap<Core::Id, ICodeStylePreferencesFactory *> factories
             = TextEditor::TextEditorSettings::instance()->codeStyleFactories();
-    QMapIterator<QString, ICodeStylePreferencesFactory *> it(factories);
+    QMapIterator<Core::Id, ICodeStylePreferencesFactory *> it(factories);
     while (it.hasNext()) {
         it.next();
         ICodeStylePreferencesFactory *factory = it.value();
-        const QString languageId = factory->languageId();
+        Core::Id languageId = factory->languageId();
         ICodeStylePreferences *codeStylePreferences = config->codeStyle(languageId);
 
         CodeStyleEditor *preview = new CodeStyleEditor(factory, codeStylePreferences, m_ui.stackedWidget);
diff --git a/src/plugins/projectexplorer/editorconfiguration.cpp b/src/plugins/projectexplorer/editorconfiguration.cpp
index ea4191f03c9..027e21cb35a 100644
--- a/src/plugins/projectexplorer/editorconfiguration.cpp
+++ b/src/plugins/projectexplorer/editorconfiguration.cpp
@@ -82,23 +82,23 @@ struct EditorConfigurationPrivate
     ExtraEncodingSettings m_extraEncodingSettings;
     QTextCodec *m_textCodec;
 
-    QMap<QString, ICodeStylePreferences *> m_languageCodeStylePreferences;
+    QMap<Core::Id, ICodeStylePreferences *> m_languageCodeStylePreferences;
 };
 
 EditorConfiguration::EditorConfiguration() : d(new EditorConfigurationPrivate)
 {
     TextEditorSettings *textEditorSettings = TextEditorSettings::instance();
 
-    const QMap<QString, ICodeStylePreferences *> languageCodeStylePreferences = textEditorSettings->codeStyles();
-    QMapIterator<QString, ICodeStylePreferences *> itCodeStyle(languageCodeStylePreferences);
+    const QMap<Core::Id, ICodeStylePreferences *> languageCodeStylePreferences = textEditorSettings->codeStyles();
+    QMapIterator<Core::Id, ICodeStylePreferences *> itCodeStyle(languageCodeStylePreferences);
     while (itCodeStyle.hasNext()) {
         itCodeStyle.next();
-        const QString languageId = itCodeStyle.key();
+        Core::Id languageId = itCodeStyle.key();
         ICodeStylePreferences *originalPreferences = itCodeStyle.value();
         ICodeStylePreferencesFactory *factory = textEditorSettings->codeStyleFactory(languageId);
         ICodeStylePreferences *preferences = factory->createCodeStyle();
         preferences->setDelegatingPool(textEditorSettings->codeStylePool(languageId));
-        preferences->setId(languageId + QLatin1String("Project"));
+        preferences->setId(languageId.toString() + QLatin1String("Project"));
         preferences->setDisplayName(tr("Project %1", "Settings, %1 is a language (C++ or QML)").arg(factory->displayName()));
         preferences->setCurrentDelegate(originalPreferences);
         d->m_languageCodeStylePreferences.insert(languageId, preferences);
@@ -165,12 +165,12 @@ ICodeStylePreferences *EditorConfiguration::codeStyle() const
     return d->m_defaultCodeStyle;
 }
 
-ICodeStylePreferences *EditorConfiguration::codeStyle(const QString &languageId) const
+ICodeStylePreferences *EditorConfiguration::codeStyle(Core::Id languageId) const
 {
     return d->m_languageCodeStylePreferences.value(languageId, codeStyle());
 }
 
-QMap<QString, ICodeStylePreferences *> EditorConfiguration::codeStyles() const
+QMap<Core::Id, ICodeStylePreferences *> EditorConfiguration::codeStyles() const
 {
     return d->m_languageCodeStylePreferences;
 }
@@ -182,12 +182,12 @@ QVariantMap EditorConfiguration::toMap() const
     map.insert(kCodec, d->m_textCodec->name());
 
     map.insert(kCodeStyleCount, d->m_languageCodeStylePreferences.count());
-    QMapIterator<QString, ICodeStylePreferences *> itCodeStyle(d->m_languageCodeStylePreferences);
+    QMapIterator<Core::Id, ICodeStylePreferences *> itCodeStyle(d->m_languageCodeStylePreferences);
     int i = 0;
     while (itCodeStyle.hasNext()) {
         itCodeStyle.next();
         QVariantMap settingsIdMap;
-        settingsIdMap.insert(QLatin1String("language"), itCodeStyle.key());
+        settingsIdMap.insert(QLatin1String("language"), itCodeStyle.key().name());
         QVariantMap value;
         itCodeStyle.value()->toMap(QString(), &value);
         settingsIdMap.insert(QLatin1String("value"), value);
@@ -220,7 +220,7 @@ void EditorConfiguration::fromMap(const QVariantMap &map)
             qWarning() << "No data for code style settings list" << i << "found!";
             continue;
         }
-        QString languageId = settingsIdMap.value(QLatin1String("language")).toString();
+        Core::Id languageId(settingsIdMap.value(QLatin1String("language")).toByteArray());
         QVariantMap value = settingsIdMap.value(QLatin1String("value")).toMap();
         ICodeStylePreferences *preferences = d->m_languageCodeStylePreferences.value(languageId);
         if (preferences) {
diff --git a/src/plugins/projectexplorer/editorconfiguration.h b/src/plugins/projectexplorer/editorconfiguration.h
index 273020e8914..dc5d46e0da8 100644
--- a/src/plugins/projectexplorer/editorconfiguration.h
+++ b/src/plugins/projectexplorer/editorconfiguration.h
@@ -32,6 +32,8 @@
 
 #include "projectexplorer_export.h"
 
+#include <coreplugin/id.h>
+
 #include <QObject>
 #include <QVariantMap>
 
@@ -71,8 +73,8 @@ public:
     const TextEditor::ExtraEncodingSettings &extraEncodingSettings() const;
 
     TextEditor::ICodeStylePreferences *codeStyle() const;
-    TextEditor::ICodeStylePreferences *codeStyle(const QString &languageId) const;
-    QMap<QString, TextEditor::ICodeStylePreferences *> codeStyles() const;
+    TextEditor::ICodeStylePreferences *codeStyle(Core::Id languageId) const;
+    QMap<Core::Id, TextEditor::ICodeStylePreferences *> codeStyles() const;
 
     void configureEditor(TextEditor::ITextEditor *textEditor) const;
 
diff --git a/src/plugins/projectexplorer/projectfilewizardextension.cpp b/src/plugins/projectexplorer/projectfilewizardextension.cpp
index bf30a98c86c..6900eac0f37 100644
--- a/src/plugins/projectexplorer/projectfilewizardextension.cpp
+++ b/src/plugins/projectexplorer/projectfilewizardextension.cpp
@@ -524,9 +524,9 @@ bool ProjectFileWizardExtension::processVersionControl(const QList<Core::Generat
     return true;
 }
 
-static TextEditor::ICodeStylePreferences *codeStylePreferences(ProjectExplorer::Project *project, const QString &languageId)
+static TextEditor::ICodeStylePreferences *codeStylePreferences(ProjectExplorer::Project *project, Core::Id languageId)
 {
-    if (languageId.isEmpty())
+    if (!languageId.isValid())
         return 0;
 
     if (project)
@@ -542,9 +542,9 @@ void ProjectFileWizardExtension::applyCodeStyle(Core::GeneratedFile *file) const
 
     const Core::MimeDatabase *mdb = Core::ICore::mimeDatabase();
     Core::MimeType mt = mdb->findByFile(QFileInfo(file->path()));
-    const QString languageId = TextEditor::TextEditorSettings::instance()->languageId(mt.type());
+    Core::Id languageId = TextEditor::TextEditorSettings::instance()->languageId(mt.type());
 
-    if (languageId.isEmpty())
+    if (!languageId.isValid())
         return; // don't modify files like *.ui *.pro
 
     ProjectNode *project = 0;
diff --git a/src/plugins/qmljstools/qmljscodestylepreferencesfactory.cpp b/src/plugins/qmljstools/qmljscodestylepreferencesfactory.cpp
index decf4707391..82401b43f08 100644
--- a/src/plugins/qmljstools/qmljscodestylepreferencesfactory.cpp
+++ b/src/plugins/qmljstools/qmljscodestylepreferencesfactory.cpp
@@ -62,14 +62,14 @@ QmlJSCodeStylePreferencesFactory::QmlJSCodeStylePreferencesFactory()
 {
 }
 
-QString QmlJSCodeStylePreferencesFactory::languageId()
+Core::Id QmlJSCodeStylePreferencesFactory::languageId()
 {
     return Constants::QML_JS_SETTINGS_ID;
 }
 
 QString QmlJSCodeStylePreferencesFactory::displayName()
 {
-    return Constants::QML_JS_SETTINGS_NAME;
+    return QLatin1String(Constants::QML_JS_SETTINGS_NAME);
 }
 
 TextEditor::ICodeStylePreferences *QmlJSCodeStylePreferencesFactory::createCodeStyle() const
diff --git a/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h b/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h
index 2d9e501669f..8891425dabf 100644
--- a/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h
+++ b/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h
@@ -39,13 +39,13 @@ class QmlJSCodeStylePreferencesFactory : public TextEditor::ICodeStylePreference
 public:
     QmlJSCodeStylePreferencesFactory();
 
-    virtual QString languageId();
-    virtual QString displayName();
-    virtual TextEditor::ICodeStylePreferences *createCodeStyle() const;
-    virtual QWidget *createEditor(TextEditor::ICodeStylePreferences *settings,
-                                          QWidget *parent) const;
-    virtual TextEditor::Indenter *createIndenter() const;
-    virtual TextEditor::ISnippetProvider *snippetProvider() const;
+    Core::Id languageId();
+    QString displayName();
+    TextEditor::ICodeStylePreferences *createCodeStyle() const;
+    QWidget *createEditor(TextEditor::ICodeStylePreferences *settings,
+                          QWidget *parent) const;
+    TextEditor::Indenter *createIndenter() const;
+    TextEditor::ISnippetProvider *snippetProvider() const;
     QString previewText() const;
 };
 
diff --git a/src/plugins/texteditor/basetexteditor.cpp b/src/plugins/texteditor/basetexteditor.cpp
index 2eac0da0c19..3fe70505467 100644
--- a/src/plugins/texteditor/basetexteditor.cpp
+++ b/src/plugins/texteditor/basetexteditor.cpp
@@ -4555,12 +4555,12 @@ const TabSettings &BaseTextEditorWidget::tabSettings() const
     return d->m_document->tabSettings();
 }
 
-void BaseTextEditorWidget::setLanguageSettingsId(const QString &settingsId)
+void BaseTextEditorWidget::setLanguageSettingsId(Core::Id settingsId)
 {
     d->m_tabSettingsId = settingsId;
 }
 
-QString BaseTextEditorWidget::languageSettingsId() const
+Core::Id BaseTextEditorWidget::languageSettingsId() const
 {
     return d->m_tabSettingsId;
 }
diff --git a/src/plugins/texteditor/basetexteditor.h b/src/plugins/texteditor/basetexteditor.h
index 907671aee89..be0583b6c29 100644
--- a/src/plugins/texteditor/basetexteditor.h
+++ b/src/plugins/texteditor/basetexteditor.h
@@ -33,8 +33,9 @@
 #include "itexteditor.h"
 #include "codeassist/assistenums.h"
 
-#include <find/ifindsupport.h>
 #include <coreplugin/editormanager/editormanager.h>
+#include <coreplugin/id.h>
+#include <find/ifindsupport.h>
 
 #include <QPlainTextEdit>
 
@@ -389,8 +390,8 @@ public:
     virtual void extraAreaMouseEvent(QMouseEvent *);
 
     const TabSettings &tabSettings() const;
-    void setLanguageSettingsId(const QString &settingsId);
-    QString languageSettingsId() const;
+    void setLanguageSettingsId(Core::Id settingsId);
+    Core::Id languageSettingsId() const;
 
     void setCodeStyle(ICodeStylePreferences *settings);
 
diff --git a/src/plugins/texteditor/basetexteditor_p.h b/src/plugins/texteditor/basetexteditor_p.h
index 8847f2ee943..c8bcb8c5490 100644
--- a/src/plugins/texteditor/basetexteditor_p.h
+++ b/src/plugins/texteditor/basetexteditor_p.h
@@ -36,6 +36,7 @@
 #include "fontsettings.h"
 #include "refactoroverlay.h"
 
+#include <coreplugin/id.h>
 #include <utils/changeset.h>
 
 #include <QBasicTimer>
@@ -202,7 +203,7 @@ public:
 
     QWidget *m_extraArea;
 
-    QString m_tabSettingsId;
+    Core::Id m_tabSettingsId;
     ICodeStylePreferences *m_codeStylePreferences;
     DisplaySettings m_displaySettings;
     FontSettings m_fontSettings;
diff --git a/src/plugins/texteditor/codestylepool.cpp b/src/plugins/texteditor/codestylepool.cpp
index 2ab59a20592..2b30a3e17a5 100644
--- a/src/plugins/texteditor/codestylepool.cpp
+++ b/src/plugins/texteditor/codestylepool.cpp
@@ -115,7 +115,7 @@ CodeStylePool::~CodeStylePool()
 
 QString CodeStylePool::settingsDir() const
 {
-    const QString suffix = d->m_factory ? d->m_factory->languageId() : QLatin1String("default");
+    const QString suffix = d->m_factory ? d->m_factory->languageId().toString() : QLatin1String("default");
     return customCodeStylesPath().append(suffix);
 }
 
diff --git a/src/plugins/texteditor/fontsettings.cpp b/src/plugins/texteditor/fontsettings.cpp
index 4b434c6aa91..1d010e4556b 100644
--- a/src/plugins/texteditor/fontsettings.cpp
+++ b/src/plugins/texteditor/fontsettings.cpp
@@ -132,7 +132,7 @@ bool FontSettings::fromSettings(const QString &category,
         // Load color scheme from ini file
         foreach (const FormatDescription &desc, descriptions) {
             const TextStyle id = desc.id();
-            const QString fmt = s->value(group + Constants::nameForStyle(id), QString()).toString();
+            const QString fmt = s->value(group + QLatin1String(Constants::nameForStyle(id)), QString()).toString();
             Format format;
             if (fmt.isEmpty()) {
                 format.setForeground(desc.foreground());
diff --git a/src/plugins/texteditor/icodestylepreferencesfactory.h b/src/plugins/texteditor/icodestylepreferencesfactory.h
index b8016134041..60c4487d361 100644
--- a/src/plugins/texteditor/icodestylepreferencesfactory.h
+++ b/src/plugins/texteditor/icodestylepreferencesfactory.h
@@ -32,6 +32,8 @@
 
 #include "texteditor_global.h"
 
+#include <coreplugin/id.h>
+
 #include <QObject>
 
 namespace TextEditor {
@@ -47,7 +49,7 @@ class TEXTEDITOR_EXPORT ICodeStylePreferencesFactory : public QObject
 public:
     explicit ICodeStylePreferencesFactory(QObject *parent = 0);
 
-    virtual QString languageId() = 0;
+    virtual Core::Id languageId() = 0;
     virtual QString displayName() = 0;
     virtual ICodeStylePreferences *createCodeStyle() const = 0;
     virtual QWidget *createEditor(ICodeStylePreferences *preferences, QWidget *parent) const = 0;
diff --git a/src/plugins/texteditor/texteditorsettings.cpp b/src/plugins/texteditor/texteditorsettings.cpp
index 5e0664f4276..e761795d35f 100644
--- a/src/plugins/texteditor/texteditorsettings.cpp
+++ b/src/plugins/texteditor/texteditorsettings.cpp
@@ -69,11 +69,11 @@ public:
     HighlighterSettingsPage *m_highlighterSettingsPage;
     SnippetsSettingsPage *m_snippetsSettingsPage;
 
-    QMap<QString, ICodeStylePreferencesFactory *> m_languageToFactory;
+    QMap<Core::Id, ICodeStylePreferencesFactory *> m_languageToFactory;
 
-    QMap<QString, ICodeStylePreferences *> m_languageToCodeStyle;
-    QMap<QString, CodeStylePool *> m_languageToCodeStylePool;
-    QMap<QString, QString> m_mimeTypeToLanguage;
+    QMap<Core::Id, ICodeStylePreferences *> m_languageToCodeStyle;
+    QMap<Core::Id, CodeStylePool *> m_languageToCodeStylePool;
+    QMap<QString, Core::Id> m_mimeTypeToLanguage;
 
     CompletionSettings m_completionSettings;
 
@@ -411,12 +411,12 @@ void TextEditorSettings::registerCodeStyleFactory(ICodeStylePreferencesFactory *
     m_d->m_languageToFactory.insert(factory->languageId(), factory);
 }
 
-QMap<QString, ICodeStylePreferencesFactory *> TextEditorSettings::codeStyleFactories() const
+QMap<Core::Id, ICodeStylePreferencesFactory *> TextEditorSettings::codeStyleFactories() const
 {
     return m_d->m_languageToFactory;
 }
 
-ICodeStylePreferencesFactory *TextEditorSettings::codeStyleFactory(const QString &languageId) const
+ICodeStylePreferencesFactory *TextEditorSettings::codeStyleFactory(Core::Id languageId) const
 {
     return m_d->m_languageToFactory.value(languageId);
 }
@@ -426,17 +426,17 @@ ICodeStylePreferences *TextEditorSettings::codeStyle() const
     return m_d->m_behaviorSettingsPage->codeStyle();
 }
 
-ICodeStylePreferences *TextEditorSettings::codeStyle(const QString &languageId) const
+ICodeStylePreferences *TextEditorSettings::codeStyle(Core::Id languageId) const
 {
     return m_d->m_languageToCodeStyle.value(languageId, codeStyle());
 }
 
-QMap<QString, ICodeStylePreferences *> TextEditorSettings::codeStyles() const
+QMap<Core::Id, ICodeStylePreferences *> TextEditorSettings::codeStyles() const
 {
     return m_d->m_languageToCodeStyle;
 }
 
-void TextEditorSettings::registerCodeStyle(const QString &languageId, ICodeStylePreferences *prefs)
+void TextEditorSettings::registerCodeStyle(Core::Id languageId, ICodeStylePreferences *prefs)
 {
     m_d->m_languageToCodeStyle.insert(languageId, prefs);
 }
@@ -446,22 +446,22 @@ CodeStylePool *TextEditorSettings::codeStylePool() const
     return m_d->m_behaviorSettingsPage->codeStylePool();
 }
 
-CodeStylePool *TextEditorSettings::codeStylePool(const QString &languageId) const
+CodeStylePool *TextEditorSettings::codeStylePool(Core::Id languageId) const
 {
     return m_d->m_languageToCodeStylePool.value(languageId);
 }
 
-void TextEditorSettings::registerCodeStylePool(const QString &languageId, CodeStylePool *pool)
+void TextEditorSettings::registerCodeStylePool(Core::Id languageId, CodeStylePool *pool)
 {
     m_d->m_languageToCodeStylePool.insert(languageId, pool);
 }
 
-void TextEditorSettings::registerMimeTypeForLanguageId(const QString &mimeType, const QString &languageId)
+void TextEditorSettings::registerMimeTypeForLanguageId(const QString &mimeType, Core::Id languageId)
 {
     m_d->m_mimeTypeToLanguage.insert(mimeType, languageId);
 }
 
-QString TextEditorSettings::languageId(const QString &mimeType) const
+Core::Id TextEditorSettings::languageId(const QString &mimeType) const
 {
     return m_d->m_mimeTypeToLanguage.value(mimeType);
 }
diff --git a/src/plugins/texteditor/texteditorsettings.h b/src/plugins/texteditor/texteditorsettings.h
index 400f963bcb8..4baba8cc047 100644
--- a/src/plugins/texteditor/texteditorsettings.h
+++ b/src/plugins/texteditor/texteditorsettings.h
@@ -32,6 +32,8 @@
 
 #include "texteditor_global.h"
 
+#include <coreplugin/id.h>
+
 #include <QObject>
 
 QT_BEGIN_NAMESPACE
@@ -87,21 +89,21 @@ public:
 
     void setCompletionSettings(const TextEditor::CompletionSettings &);
 
-    ICodeStylePreferencesFactory *codeStyleFactory(const QString &languageId) const;
-    QMap<QString, ICodeStylePreferencesFactory *> codeStyleFactories() const;
+    ICodeStylePreferencesFactory *codeStyleFactory(Core::Id languageId) const;
+    QMap<Core::Id, ICodeStylePreferencesFactory *> codeStyleFactories() const;
     void registerCodeStyleFactory(ICodeStylePreferencesFactory *codeStyleFactory);
 
     CodeStylePool *codeStylePool() const;
-    CodeStylePool *codeStylePool(const QString &languageId) const;
-    void registerCodeStylePool(const QString &languageId, CodeStylePool *pool);
+    CodeStylePool *codeStylePool(Core::Id languageId) const;
+    void registerCodeStylePool(Core::Id languageId, CodeStylePool *pool);
 
     ICodeStylePreferences *codeStyle() const;
-    ICodeStylePreferences *codeStyle(const QString &languageId) const;
-    QMap<QString, ICodeStylePreferences *> codeStyles() const;
-    void registerCodeStyle(const QString &languageId, ICodeStylePreferences *prefs);
+    ICodeStylePreferences *codeStyle(Core::Id languageId) const;
+    QMap<Core::Id, ICodeStylePreferences *> codeStyles() const;
+    void registerCodeStyle(Core::Id languageId, ICodeStylePreferences *prefs);
 
-    void registerMimeTypeForLanguageId(const QString &mimeType, const QString &languageId);
-    QString languageId(const QString &mimeType) const;
+    void registerMimeTypeForLanguageId(const QString &mimeType, Core::Id languageId);
+    Core::Id languageId(const QString &mimeType) const;
 
 signals:
     void fontSettingsChanged(const TextEditor::FontSettings &);