1 files changed, 12 insertions, 2 deletions
diff --git a/src/plugins/help/helpindexfilter.h b/src/plugins/help/helpindexfilter.h
index 06526ec73e..237a522443 100644
--- a/src/plugins/help/helpindexfilter.h
+++ b/src/plugins/help/helpindexfilter.h
@@ -34,6 +34,7 @@
 #include <coreplugin/locator/ilocatorfilter.h>
 
 #include <QIcon>
+#include <QMutex>
 
 namespace Help {
 namespace Internal {
@@ -48,17 +49,26 @@ public:
 
     // ILocatorFilter
     void prepareSearch(const QString &entry);
-    QList<Core::LocatorFilterEntry> matchesFor(QFutureInterface<Core::LocatorFilterEntry> &future, const QString &entry);
+    QList<Core::LocatorFilterEntry> matchesFor(QFutureInterface<Core::LocatorFilterEntry> &future,
+                                               const QString &entry);
     void accept(Core::LocatorFilterEntry selection) const;
     void refresh(QFutureInterface<void> &future);
 
+    Q_INVOKABLE QSet<QString> searchMatches(const QString &databaseFilePath,
+                                          const QString &term, int limit);
 signals:
     void linkActivated(const QUrl &link) const;
     void linksActivated(const QMap<QString, QUrl> &links, const QString &key) const;
 
 private:
+    void invalidateCache();
+
+    QStringList m_helpDatabases;
+    QSet<QString> m_keywordCache;
+    QString m_searchTermCache;
+    bool m_needsUpdate;
+    QMutex m_mutex;
     QIcon m_icon;
-    QStringList m_keywords;
 };
 
 } // namespace Internal