private void checkAllSelectedGefaehrdungen() {
    List<Gefaehrdung> toCheck = new ArrayList<Gefaehrdung>();
    for (GefaehrdungsUmsetzung associatedGefaehrdung : wizard.getAssociatedGefaehrdungen()) {
      for (Gefaehrdung gefaehrdung : wizard.getAllGefaehrdungen()) {
        if (gefaehrdung.getId().equals(associatedGefaehrdung.getId())) {
          toCheck.add(gefaehrdung);
        }
      }
    }

    Gefaehrdung[] checkarray = toCheck.toArray(new Gefaehrdung[toCheck.size()]);
    viewer.setCheckedElements(checkarray);
  }
  /** Marks all checkboxes of Gefaehrdungen associated to the selected Baustein. */
  private void assignBausteinGefaehrdungen() {
    try {
      LoadAssociatedGefaehrdungen command = new LoadAssociatedGefaehrdungen(wizard.getCnaElement());
      command = ServiceFactory.lookupCommandService().executeCommand(command);
      List<GefaehrdungsUmsetzung> list = command.getAssociatedGefaehrdungen();

      for (GefaehrdungsUmsetzung selectedGefaehrdung : list) {
        for (Gefaehrdung gefaehrdung : wizard.getAllGefaehrdungen()) {
          if (gefaehrdung.getId().equals(selectedGefaehrdung.getId())) {
            associateGefaehrdung(gefaehrdung, true);
          }
        }
      }
    } catch (CommandException e) {
      ExceptionUtil.log(e, ""); // $NON-NLS-1$
    }
  }
  /**
   * Fills the CheckboxTableViewer with all Gefaehrdungen available. Is processed each time the
   * WizardPage is set visible.
   */
  private void initContents() {
    wizard = ((RiskAnalysisWizard) getWizard());
    ArrayList<Gefaehrdung> arrListAllGefaehrdungen = wizard.getAllGefaehrdungen();

    /* map a domain model object into multiple images and text labels */
    viewer.setLabelProvider(new CheckboxTableViewerLabelProvider());
    /* map domain model into array */
    viewer.setContentProvider(new ArrayContentProvider());
    /* associate domain model with viewer */
    viewer.setInput(arrListAllGefaehrdungen);
    viewer.setSorter(new GefaehrdungenSorter());
    assignBausteinGefaehrdungen();
    checkAllSelectedGefaehrdungen();
    packAllColumns();

    ((RiskAnalysisWizard) getWizard()).setCanFinish(false);
    checkPageComplete();
  }