Keep search focus when changing map list tabs

include/mainwindow.h

@@ -380,7 +380,7 @@ private:
 
     void updateMapList();
     void openMapListItem(const QModelIndex &index);
-    void saveMapListTab(int index);
+    void onMapListTabChanged(int index);
 
     void displayMapProperties();
     void checkToolButtons();

include/ui/maplisttoolbar.h

@@ -37,6 +37,8 @@ public:
     void setFilterLocked(bool locked) { m_filterLocked = locked; }
     bool isFilterLocked() const { return m_filterLocked; }
 
+    void setSearchFocus();
+
 signals:
     void filterCleared(MapTree*);
     void addFolderClicked();