protected void updateSector() {
   this.currentSector = this.selector.getSector();
   if (this.currentSector != null) {
     // Update sector description
     this.sectorLabel.setText(makeSectorDescription(this.currentSector));
     this.selectButton.setText("Clear sector");
     this.startButton.setEnabled(true);
   } else {
     // null sector
     this.sectorLabel.setText("-");
     this.selectButton.setText("Select sector");
     this.startButton.setEnabled(false);
   }
   updateRetrievablePanels(this.currentSector);
 }