Rewrite of the whole help modul initialization.

We now do as much as possible lazy initialisation, e.g only start the
full text search indexer if we really access the search widget. Also
moved the QFutur progress into the search widget. Changed all ctors to
be called without an argument, since we share the help engines from
help manager all over the place. Make use of the fact that we only need
to call setupData on the gui engine if we access the help mode, otherwise
all data is fetched thru the core engine whichs setupData is really fast.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/plugins/help/filtersettingspage.h b/src/plugins/help/filtersettingspage.h
index e834b2f7493..74398e51c53 100644
--- a/src/plugins/help/filtersettingspage.h
+++ b/src/plugins/help/filtersettingspage.h
@@ -54,7 +54,8 @@ public:
     void finish() {}
     virtual bool matches(const QString &s) const;
 
-    bool applyChanges();
+signals:
+    void filtersChanged();
 
 private slots:
     void updateAttributes(QListWidgetItem *item);