* 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. */

		<postConstruct name="addQueryRescorer">
			<arg>
				<component class="org.codelibs.fess.score.LtrQueryRescorer" />
			</arg>
		</postConstruct>
	</component>
	<component name="viewHelper" class="org.codelibs.fess.helper.ViewHelper">
	</component>
	<component name="userAgentHelper" class="org.codelibs.fess.helper.UserAgentHelper">
	</component>
	<component name="popularWordHelper" class="org.codelibs.fess.helper.PopularWordHelper">

            op.setup(form -> {
                buildFormParams(form);
            });
        }).renderWith(data -> {
            buildInitParams();
            RenderDataUtil.register(data, "helpPage", viewHelper.getPagePath("common/help"));
        });
    }

                    }

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

        }
        if (doc == null) {
            saveError(messages -> messages.addErrorsDocidNotFound(GLOBAL, form.docId));
            return redirect(ErrorAction.class);
        }

        final String content = viewHelper.createCacheContent(doc, form.hq);
        if (content == null) {
            saveError(messages -> messages.addErrorsDocidNotFound(GLOBAL, form.docId));
            return redirect(ErrorAction.class);
        }

     * by calling buildInitParamMap for both parameter types.
     */
    protected void buildInitParams() {
        buildInitParamMap(viewHelper.getInitFacetParamMap(), Constants.FACET_QUERY, Constants.FACET_FORM);
        buildInitParamMap(viewHelper.getInitGeoParamMap(), Constants.GEO_QUERY, Constants.GEO_FORM);
    }

    /**
     * Builds parameter maps for search initialization, creating both query strings

    protected static final String USER_AGENT = "user-agent";

    /** The request attribute key for storing cached user agent type */
    protected static final String USER_AGENT_TYPE = "ViewHelper.UserAgent";

    /**
     * Determines the user agent type from the current HTTP request.
     * The method analyzes the User-Agent header to categorize the browser type