* caching, pagination, and user interface functionality.
 *
 */
public class ViewHelper {

    /**
     * Default constructor for ViewHelper.
     */
    public ViewHelper() {
        // Default constructor
    }

    private static final Logger logger = LogManager.getLogger(ViewHelper.class);

    /** Request attribute key for screen width */

            docMap.put(Constants.TEXT_FRAGMENTS, viewHelper.createTextFragmentsByQuery());
        }

        // ContentTitle
        if (viewHelper != null) {
            docMap.put(fessConfig.getResponseFieldContentTitle(), viewHelper.getContentTitle(docMap));
            docMap.put(fessConfig.getResponseFieldContentDescription(), viewHelper.getContentDescription(docMap));

        }
        if (!fessConfig.isSearchFileProxyEnabled()) {
            return HtmlResponse.fromRedirectPathAsIs(targetUrl + hash);
        }
        final ViewHelper viewHelper = ComponentUtil.getViewHelper();
        try {
            final StreamResponse response = viewHelper.asContentResponse(doc);
            if (response.getHttpStatus().orElse(200) == 404) {
                logger.debug("Document not found: url={}", targetUrl);

    @Resource
    protected AccessTokenHelper accessTokenHelper;

    /** Helper for view-related operations and rendering. */
    @Resource
    protected ViewHelper viewHelper;

    /** Manager for handling application messages and internationalization. */
    @Resource
    private MessageManager messageManager;

    /** Manager for handling HTTP request operations. */

                    }

                    final ViewHelper viewHelper = ComponentUtil.getViewHelper();
                    if (viewHelper != null && !docMap.isEmpty()) {
                        docMap.put(fessConfig.getResponseFieldContentTitle(), viewHelper.getContentTitle(docMap));
                        docMap.put(fessConfig.getResponseFieldContentDescription(), viewHelper.getContentDescription(docMap));

     *
     * @return list of FacetQueryView objects
     */
    public static List<FacetQueryView> facetQueryViewList() {
        final ViewHelper viewHelper = ComponentUtil.getViewHelper();
        return viewHelper.getFacetQueryViewList();
    }

    /**
     * Creates a URL query string from request parameters that start with the specified prefix.
     *