void updateContentInfo() {
       
       Map<String, Integer> groups=new HashMap();
       int dayLenght=0;
       
       for(String name:Day.getAllDays().keySet())
       {
           Day d=Day.getAllDays().get(name);           
           for(DayEvent e:d.getEventList()){
               if(!e.isUnused()){
                   if(groups.keySet().contains(e.getSubjectName())){
                       int cur=(int)groups.get(e.getSubjectName())+e.getEventLength();                       
                       groups.put(e.getSubjectName(),cur);
                   }else{
                       groups.put(e.getSubjectName(),e.getEventLength());                       
                   }
                   dayLenght+=e.getEventLength();
               }
           }
           contentInfoPanel.removeAll();
           for(String s:groups.keySet()){
               contentInfoPanel.add(new JLabel(s+" "+(int)groups.get(s)/60+"ч."+(int)groups.get(s)%60+"м."));
           }
           this.infoBar.setText("Длинна недели "+dayLenght/60+"ч. "+dayLenght%60+"м.");           
       }
       this.validate();
       this.repaint();
    }