/** Eventhandler */
  public void onEvent(Event ev) {
    if (ev instanceof MenuEvent) {
      if (ev.type == MenuEvent.SELECTED) {
        if (((MenuEvent) ev).menu == mnuContextFormt) {
          mnuContextFormt.close();
          mnuContextFormt.getItemAt(currFormatSel).modifiers &= ~MenuItem.Checked;
          currFormatSel = mnuContextFormt.getInt();
          mnuContextFormt.getItemAt(currFormatSel).modifiers |= MenuItem.Checked;
          lblPosition.setText(
              myNavigation.gpsPos.toString(CoordsScreen.getLocalSystem(currFormatSel)));
          btnGoto.setText(getGotoBtnText());
        } // end lat-lon-format context menu
        if (((MenuEvent) ev).menu == mnuContextRose) {
          MenuItem action = (MenuItem) mnuContextRose.getSelectedItem();
          if (action != null) {
            for (int i = 0; i < miLuminary.length; i++) {
              if (action == miLuminary[i]) {
                myNavigation.setLuminary(i);
                miLuminary[i].modifiers |= MenuItem.Checked;
                compassRose.setLuminaryName(SkyOrientation.getLuminaryName(myNavigation.luminary));
              } else miLuminary[i].modifiers &= ~MenuItem.Checked;
            }
            if (action == miNorthCentered) {
              if (compassRose.isNorthCentered()) {
                compassRose.setNorthCentered(false);
                miNorthCentered.modifiers &= ~MenuItem.Checked;
              } else {
                compassRose.setNorthCentered(true);
                miNorthCentered.modifiers |= MenuItem.Checked;
              }
            }
          }
        }
      }
    }

    if (ev instanceof ControlEvent && ev.type == ControlEvent.PRESSED) {
      // start/stop GPS connection
      if (ev.target == btnGPS) {
        if (btnGPS.getText().equals(MyLocale.getMsg(1504, "Start"))) startGps();
        else myNavigation.stopGps();
      }

      // set current position as centre and recalculate distance of caches in MainTab
      if (ev.target == btnCenter) {
        if (myNavigation.gpsPos.isValid()) {
          pref.setCurCentrePt(myNavigation.gpsPos);
        } else
          (new MessageBox(
                  MyLocale.getMsg(312, "Error"),
                  MyLocale.getMsg(
                      1514, "Cannot recalculate distances, because the GPS position is not set"),
                  FormBase.OKB))
              .execute();
      }
      // Start moving map
      if (ev.target == btnMap) {
        switchToMovingMap();
      }
      // create new waypoint with current GPS-position
      if (ev.target == btnSave) {
        CacheHolder ch = new CacheHolder();
        ch.setPos(myNavigation.gpsPos);
        ch.setType(CacheType.CW_TYPE_STAGE); // see CacheType.GC_AW_STAGE_OF_MULTI // TODO unfertig
        mainT.newWaypoint(ch);
      }
      // change destination waypoint
      if (ev.target == btnGoto) {
        if (Vm.isMobile()) {
          InputScreen InScr = new InputScreen(CoordsScreen.getLocalSystem(currFormatSel));
          if (myNavigation.destination.isValid()) InScr.setCoords(myNavigation.destination);
          else InScr.setCoords(new CWPoint(0, 0));
          if (InScr.execute(null, CellConstants.TOP) == FormBase.IDOK)
            setDestination(InScr.getCoords());
        } else {
          CoordsScreen cs = new CoordsScreen();
          if (myNavigation.destination.isValid())
            cs.setFields(myNavigation.destination, CoordsScreen.getLocalSystem(currFormatSel));
          else cs.setFields(new CWPoint(0, 0), CoordsScreen.getLocalSystem(currFormatSel));
          if (cs.execute(null, CellConstants.TOP) == FormBase.IDOK) setDestination(cs.getCoords());
        }
      }
    }
    super.onEvent(ev);
  }
 public void gpsStarted() {
   btnGPS.setText(MyLocale.getMsg(1505, "Stop"));
 }
 public void gpsStoped() {
   btnGPS.setText(MyLocale.getMsg(1504, "Start"));
   gpsStatus = this.backGround;
   this.repaintNow(); // without this the change in the background color will not be displayed
 }
 public void destChanged(CWPoint d) { // called from myNavigate
   btnGoto.setText(getGotoBtnText());
   updateDistance();
 }