improve encapsulation of file browser window object * files-dockwidget.h, files-dockwidget.cc (files_dock_widget::files_dock_widget): Use new local variable container for clarity. Set status tip. (files_dock_widget::connect_visibility_changed, files_dock_widget::focus, files_dock_widget::handle_visibility): New functions. * main-window.h, main-window.cc (main_window::file_browser_window): Rename from _files_dock_widget. Change all uses. (main_window::main_window): Initialize it here. (main_window::focus_current_directory, main_window::handle_current_directory_visible): Delete. (main_window::connect_visibility_changed): Call file_browser_window->connect_visibility_changed. (main_window::construct): Don't create _files_dock_widget here. Connect file_browser_action::triggered to file_browser_window::focus instead of main_window::focus_current_directory.

--- a/libgui/src/files-dockwidget.h
+++ b/libgui/src/files-dockwidget.h
@@ -46,11 +46,15 @@
 class files_dock_widget : public octave_dock_widget
 {
   Q_OBJECT
-  public:
-  /** Constructs a new files_dock_widget. */
+
+public:
+
   files_dock_widget (QWidget *parent = 0);
+
   ~files_dock_widget ();
 
+  void connect_visibility_changed (void);
+
 public slots:
 
   /** Slot for handling a change in directory via double click. */
@@ -70,6 +74,10 @@
   /** Tells the widget to react on changed settings. */
   void notice_settings (const QSettings *settings);
 
+  void focus (void);
+
+  void handle_visibility (bool visible);
+
 signals:
   /** Emitted, whenever the user requested to open a file. */
   void open_file (const QString& fileName);