bin.h

// bin.h        -*-c++-*-
//
//  Generic stuff for a container that can only handle one child.
 
#ifndef BIN_H
#define BIN_H
 
#include "passthrough.h"
 
#include <sigc++/connection.h>
 
namespace cwidget
{
  namespace widgets
  {
    class bin : public passthrough
    {
      widget_ref subwidget;
 
      // These are unfortunate necessities; when a widget is /removed/
      // (but not destroyed), it is necessary to delete the connections to
      // it.  :-(
      sigc::connection show_conn, hide_conn;
 
      // right now these just show or hide the bin itself
      void show_widget(const widget_ref &w);
      void hide_widget(const widget_ref &w);
 
      void show_widget_bare(widget &w);
      void hide_widget_bare(widget &w);
 
    protected:
      bin();
 
    public:
      virtual ~bin();
 
      void set_subwidget(const util::ref_ptr<widget> &w);
      void set_subwidget(widget &w)
      {
        set_subwidget(util::ref_ptr<widget>(&w));
      }
 
      widget_ref get_subwidget() {return subwidget;}
 
      void destroy();
 
      virtual void show_all();
 
      virtual void add_widget(const widget_ref &w);
      virtual void rem_widget(const widget_ref &w);
 
      widget_ref get_focus();
 
      void paint(const style &st);
    };
  }
}
 
#endif