private void updateDeleteIssueButtonState() {
        boolean disable = true;
        if (deleteIssue != null && table != null) {
            final boolean nothingSelected = table.getSelectionModel().getSelectedItems().isEmpty();
            disable = nothingSelected;
        }
        if (deleteIssue != null) {
            deleteIssue.setDisable(disable);
        }
    }