src/main/java/org/apache/sling/caconfig/management/impl/console/ConfigurationWebConsolePlugin.java - sling-org-apache-sling-caconfig-impl - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the
  * "License"); you may not use this file except in compliance
  * with the License.  You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
  */
 package org.apache.sling.caconfig.management.impl.console;

 import java.io.IOException;
 import java.io.PrintWriter;
 import java.lang.reflect.Array;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Iterator;

 import javax.servlet.Servlet;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;

 import org.apache.commons.lang3.BooleanUtils;
 import org.apache.commons.lang3.ObjectUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.felix.webconsole.AbstractWebConsolePlugin;
 import org.apache.felix.webconsole.WebConsoleConstants;
 import org.apache.sling.api.resource.LoginException;
 import org.apache.sling.api.resource.Resource;
 import org.apache.sling.api.resource.ResourceResolver;
 import org.apache.sling.api.resource.ResourceResolverFactory;
 import org.apache.sling.caconfig.management.ConfigurationData;
 import org.apache.sling.caconfig.management.ConfigurationManager;
 import org.apache.sling.caconfig.management.ValueInfo;
 import org.apache.sling.caconfig.management.multiplexer.ContextPathStrategyMultiplexer;
 import org.apache.sling.caconfig.resource.spi.ContextResource;
 import org.osgi.framework.Constants;
 import org.osgi.service.component.annotations.Component;
 import org.osgi.service.component.annotations.Reference;
 import org.osgi.service.component.annotations.ReferencePolicyOption;
 import org.owasp.encoder.Encode;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 /**
  * Web console plugin to test configuration resolution.
  */
 @Component(service=Servlet.class,
            property={Constants.SERVICE_DESCRIPTION + "=Apache Sling Context-Aware Configuration Web Console Plugin",
                    WebConsoleConstants.PLUGIN_LABEL + "=" + ConfigurationWebConsolePlugin.LABEL,
                    WebConsoleConstants.PLUGIN_TITLE + "=" + ConfigurationWebConsolePlugin.TITLE,
                    WebConsoleConstants.PLUGIN_CATEGORY + "=Sling"})
 @SuppressWarnings("serial")
 public class ConfigurationWebConsolePlugin extends AbstractWebConsolePlugin {

     public static final String LABEL = "slingcaconfig";
     public static final String TITLE = "Context-Aware Configuration";

     private static final Logger log = LoggerFactory.getLogger(ConfigurationWebConsolePlugin.class);

     @Reference(policyOption = ReferencePolicyOption.GREEDY)
     private ResourceResolverFactory resolverFactory;

     @Reference(policyOption = ReferencePolicyOption.GREEDY)
     private ConfigurationManager configurationManager;

     @Reference(policyOption = ReferencePolicyOption.GREEDY)
     private ContextPathStrategyMultiplexer contextPathStrategyMultiplexer;

     @Override
     public String getLabel() {
         return LABEL;
     }

     @Override
     public String getTitle() {
         return TITLE;
     }

     @Override
     protected void renderContent(HttpServletRequest request, HttpServletResponse response)
         throws ServletException, IOException {

         final PrintWriter pw = response.getWriter();

         info(pw, "Configurations are managed in the resource tree. Use this tool to test configuration resolutions.");

         pw.println("<br/>");

         printResolutionTestTool(request, pw);
     }

     private String getParameter(final HttpServletRequest request, final String name, final String defaultValue) {
         String value = request.getParameter(name);
         if ( value != null && !value.trim().isEmpty() ) {
             return value.trim();
         }
         return defaultValue;
     }

     private void printResolutionTestTool(HttpServletRequest request, PrintWriter pw) {
         final String path = this.getParameter(request, "path", "/content");
         String configNameOther = this.getParameter(request, "configNameOther", null);
         String configName = this.getParameter(request, "configName", null);
         if (configName == null) {
             configName = configNameOther;
         }
         else {
             configNameOther = null;
         }
         final boolean resourceCollection = BooleanUtils.toBoolean(this.getParameter(request, "resourceCollection", "false"));

         ResourceResolver resolver = null;
         try {
             Resource contentResource = null;
             if (path != null) {
                 resolver = getResolver(request);
                 if (resolver != null) {
                     contentResource = resolver.getResource(path);
                 }
             }

             pw.println("<form method='get'>");

             tableStart(pw, "Test Configuration Resolution", 2);

             String alertMessage = null;
             if (path != null) {
                 if (resolver == null) {
                     alertMessage = "Unable to access repository - please check system configuration.";
                 }
                 else if (contentResource == null) {
                     alertMessage = "Path does not exist.";
                 }
             }
             textField(pw, "Content Path", "path", path, alertMessage);

             tableRows(pw);
             selectField(pw, "Config Name", "configName", configName, configurationManager.getConfigurationNames());

             tableRows(pw);
             textField(pw, "Other Config Name", "configNameOther", configNameOther);

             tableRows(pw);
             checkboxField(pw, "Resource collection", "resourceCollection", resourceCollection);

             tableRows(pw);
             pw.println("<td></td>");
             pw.println("<td><input type='submit' value='Resolve'/></td>");
             tableEnd(pw);

             pw.println("</form>");

             pw.println("<br/>");

             if (contentResource != null && configName != null) {

                 // context paths
                 Iterator<ContextResource> contextResources = contextPathStrategyMultiplexer.findContextResources(contentResource);
                 tableStart(pw, "Context paths", 3);
                 pw.println("<th>Context path</th>");
                 pw.println("<th>Config reference</th>");
                 pw.println("<th>Ranking</th>");
                 while (contextResources.hasNext()) {
                     ContextResource contextResource = contextResources.next();
                     tableRows(pw);
                     pw.println("<td>" + Encode.forHtmlContent(contextResource.getResource().getPath()) + "</td>");
                     pw.println("<td>" + Encode.forHtmlContent(contextResource.getConfigRef()) + "</td>");
                     pw.println("<td>" + contextResource.getServiceRanking() + "</td>");
                 }
                 tableEnd(pw);

                 pw.println("<br/>");

                 // resolve configuration
                 Collection<ConfigurationData> configDatas;
                 if (resourceCollection) {
                     configDatas = configurationManager.getConfigurationCollection(contentResource, configName).getItems();
                 }
                 else {
                     ConfigurationData configData = configurationManager.getConfiguration(contentResource, configName);
                     if (configData != null) {
                         configDatas = Collections.singletonList(configData);
                     }
                     else {
                         configDatas = Collections.emptyList();
                     }
                 }

                 tableStart(pw, "Result", 6);

                 if (configDatas.size() == 0) {
                     pw.println("<td colspan='6'>");
                     alertDiv(pw, "No matching item found.");
                     pw.println("<br/>&nbsp;</td>");
                 }
                 else {

                     pw.println("<th>Property</th>");
                     pw.println("<th>Effective Value</th>");
                     pw.println("<th>Value</th>");
                     pw.println("<th>Default</th>");
                     pw.println("<th>Inherited</th>");
                     pw.println("<th>Overwritten</th>");

                     for (ConfigurationData data : configDatas) {
                         tableRows(pw);
                         pw.println("<td colspan='6' style='background-color:#f3f3f3'>");
                         pw.print("Path: " + Encode.forHtmlContent(data.getResourcePath()));
                         pw.println("</td>");

                         for (String propertyName : data.getPropertyNames()) {
                             ValueInfo<?> valueInfo = data.getValueInfo(propertyName);
                             if (valueInfo == null) {
                                 continue;
                             }
                             tableRows(pw);
                             td(pw, propertyName);
                             td(pw, valueInfo.getEffectiveValue());
                             td(pw, valueInfo.getValue());
                             td(pw, valueInfo.isDefault());

                             String title = null;
                             if (valueInfo.isInherited()) {
                                 title = "Source path: " + valueInfo.getConfigSourcePath();
                             }
                             td(pw, valueInfo.isInherited(), title);

                             td(pw, valueInfo.isOverridden());
                         }

                    }

                 }

                 tableEnd(pw);
             }

         }
         finally {
             if (resolver != null) {
                 resolver.close();
             }
         }
     }

     private void info(PrintWriter pw, String text) {
         pw.print("<p class='statline ui-state-highlight'>");
         pw.print(Encode.forHtmlContent(text));
         pw.println("</p>");
     }

     private void tableStart(PrintWriter pw, String title, int colspan) {
         pw.println("<table class='nicetable ui-widget'>");
         pw.println("<thead class='ui-widget-header'>");
         pw.println("<tr>");
         pw.print("<th colspan=");
         pw.print(String.valueOf(colspan));
         pw.print(">");
         pw.print(Encode.forHtmlContent(title));
         pw.println("</th>");
         pw.println("</tr>");
         pw.println("</thead>");
         pw.println("<tbody class='ui-widget-content'>");
         pw.println("<tr>");
     }

     private void tableEnd(PrintWriter pw) {
         pw.println("</tr>");
         pw.println("</tbody>");
         pw.println("</table>");
     }

     private void tableRows(PrintWriter pw) {
         pw.println("</tr>");
         pw.println("<tr>");
     }

     private void textField(PrintWriter pw, String label, String fieldName, String value, String... alertMessages) {
         pw.print("<td style='width:20%'>");
         pw.print(Encode.forHtmlContent(label));
         pw.println("</td>");
         pw.print("<td><input name='");
         pw.print(Encode.forHtmlAttribute(fieldName));
         pw.print("' value='");
         pw.print(Encode.forHtmlAttribute(StringUtils.defaultString(value)));
         pw.print("' style='width:100%'/>");
         for (String alertMessage : alertMessages) {
             alertDiv(pw, alertMessage);
         }
         pw.println("</td>");
     }

     private void selectField(PrintWriter pw, String label, String fieldName, String value, Collection<String> options) {
         pw.print("<td style='width:20%'>");
         pw.print(Encode.forHtmlContent(label));
         pw.println("</td>");
         pw.print("<td><select name='");
         pw.print(Encode.forHtmlAttribute(fieldName));
         pw.print("' style='width:100%'>");
         pw.print("<option value=''>(please select)</option>");
         for (String option : options) {
             pw.print("<option");
             if (StringUtils.equals(option, value)) {
                 pw.print(" selected");
             }
             pw.print(">");
             pw.print(Encode.forHtmlAttribute(option));
             pw.print("</option>");
         }
         pw.print("</select>");
         pw.println("</td>");
     }

     private void checkboxField(PrintWriter pw, String label, String fieldName, boolean checked) {
         pw.print("<td style='width:20%'>");
         pw.print(Encode.forHtmlContent(label));
         pw.println("</td>");
         pw.print("<td><input type='checkbox' name='");
         pw.print(Encode.forHtmlAttribute(fieldName));
         pw.print("' value='true'");
         if (checked) {
             pw.print(" checked");
         }
         pw.print("/></td>");
     }

     private void alertDiv(PrintWriter pw, String text) {
         if (StringUtils.isBlank(text)) {
             return;
         }
         pw.println("<div>");
         pw.println("<span class='ui-icon ui-icon-alert' style='float:left'></span>");
         pw.print("<span style='float:left'>");
         pw.print(Encode.forHtmlContent(text));
         pw.println("</span>");
         pw.println("</div>");
     }

     private void td(PrintWriter pw, Object value, String... title) {
         pw.print("<td");
         if (title.length > 0 && !StringUtils.isBlank(title[0])) {
             pw.print(" title='");
             pw.print(Encode.forHtmlAttribute(title[0]));
             pw.print("'");
         }
         pw.print(">");

         if (value != null) {
             if (value.getClass().isArray()) {
                 for (int i = 0; i < Array.getLength(value); i++) {
                     Object itemValue = Array.get(value, i);
                     pw.print(Encode.forHtmlContent(ObjectUtils.defaultIfNull(itemValue, "").toString()));
                     pw.println("<br>");
                 }
             }
             else {
                 pw.print(Encode.forHtmlContent(value.toString()));
             }
         }

         if (title.length > 0 && !StringUtils.isBlank(title[0])) {
             pw.print("<span class='ui-icon ui-icon-info' style='float:left'></span>");
         }
         pw.print("</td>");
     }

     private ResourceResolver getResolver(HttpServletRequest request) {
         ResourceResolver resolver = null;
         try {
             resolver = resolverFactory.getServiceResourceResolver(null);
         }
         catch (final LoginException ex) {
             // fallback if no service user is registered - try to get current web console resource resolver
             resolver = (ResourceResolver)request.getAttribute("org.apache.sling.auth.core.ResourceResolver");
             if (resolver == null) {
                 log.warn("Unable to get resource resolver - please ensure a system user is configured: {}", ex.getMessage());
             }
             else {
                 log.debug("No system user configured, use resource resolver from web console.");
             }
         }
         return resolver;
     }

 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you under the Apache License, Version 2.0 (the
	* "License"); you may not use this file except in compliance
	* with the License. You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing,
	* software distributed under the License is distributed on an
	* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	* KIND, either express or implied. See the License for the
	* specific language governing permissions and limitations
	* under the License.
	*/
	package org.apache.sling.caconfig.management.impl.console;

	import java.io.IOException;
	import java.io.PrintWriter;
	import java.lang.reflect.Array;
	import java.util.Collection;
	import java.util.Collections;
	import java.util.Iterator;

	import javax.servlet.Servlet;
	import javax.servlet.ServletException;
	import javax.servlet.http.HttpServletRequest;
	import javax.servlet.http.HttpServletResponse;

	import org.apache.commons.lang3.BooleanUtils;
	import org.apache.commons.lang3.ObjectUtils;
	import org.apache.commons.lang3.StringUtils;
	import org.apache.felix.webconsole.AbstractWebConsolePlugin;
	import org.apache.felix.webconsole.WebConsoleConstants;
	import org.apache.sling.api.resource.LoginException;
	import org.apache.sling.api.resource.Resource;
	import org.apache.sling.api.resource.ResourceResolver;
	import org.apache.sling.api.resource.ResourceResolverFactory;
	import org.apache.sling.caconfig.management.ConfigurationData;
	import org.apache.sling.caconfig.management.ConfigurationManager;
	import org.apache.sling.caconfig.management.ValueInfo;
	import org.apache.sling.caconfig.management.multiplexer.ContextPathStrategyMultiplexer;
	import org.apache.sling.caconfig.resource.spi.ContextResource;
	import org.osgi.framework.Constants;
	import org.osgi.service.component.annotations.Component;
	import org.osgi.service.component.annotations.Reference;
	import org.osgi.service.component.annotations.ReferencePolicyOption;
	import org.owasp.encoder.Encode;
	import org.slf4j.Logger;
	import org.slf4j.LoggerFactory;

	/**
	* Web console plugin to test configuration resolution.
	*/
	@Component(service=Servlet.class,
	property={Constants.SERVICE_DESCRIPTION + "=Apache Sling Context-Aware Configuration Web Console Plugin",
	WebConsoleConstants.PLUGIN_LABEL + "=" + ConfigurationWebConsolePlugin.LABEL,
	WebConsoleConstants.PLUGIN_TITLE + "=" + ConfigurationWebConsolePlugin.TITLE,
	WebConsoleConstants.PLUGIN_CATEGORY + "=Sling"})
	@SuppressWarnings("serial")
	public class ConfigurationWebConsolePlugin extends AbstractWebConsolePlugin {

	public static final String LABEL = "slingcaconfig";
	public static final String TITLE = "Context-Aware Configuration";

	private static final Logger log = LoggerFactory.getLogger(ConfigurationWebConsolePlugin.class);

	@Reference(policyOption = ReferencePolicyOption.GREEDY)
	private ResourceResolverFactory resolverFactory;

	@Reference(policyOption = ReferencePolicyOption.GREEDY)
	private ConfigurationManager configurationManager;

	@Reference(policyOption = ReferencePolicyOption.GREEDY)
	private ContextPathStrategyMultiplexer contextPathStrategyMultiplexer;

	@Override
	public String getLabel() {
	return LABEL;
	}

	@Override
	public String getTitle() {
	return TITLE;
	}

	@Override
	protected void renderContent(HttpServletRequest request, HttpServletResponse response)
	throws ServletException, IOException {

	final PrintWriter pw = response.getWriter();

	info(pw, "Configurations are managed in the resource tree. Use this tool to test configuration resolutions.");

	pw.println("<br/>");

	printResolutionTestTool(request, pw);
	}

	private String getParameter(final HttpServletRequest request, final String name, final String defaultValue) {
	String value = request.getParameter(name);
	if ( value != null && !value.trim().isEmpty() ) {
	return value.trim();
	}
	return defaultValue;
	}

	private void printResolutionTestTool(HttpServletRequest request, PrintWriter pw) {
	final String path = this.getParameter(request, "path", "/content");
	String configNameOther = this.getParameter(request, "configNameOther", null);
	String configName = this.getParameter(request, "configName", null);
	if (configName == null) {
	configName = configNameOther;
	}
	else {
	configNameOther = null;
	}
	final boolean resourceCollection = BooleanUtils.toBoolean(this.getParameter(request, "resourceCollection", "false"));

	ResourceResolver resolver = null;
	try {
	Resource contentResource = null;
	if (path != null) {
	resolver = getResolver(request);
	if (resolver != null) {
	contentResource = resolver.getResource(path);
	}
	}

	pw.println("<form method='get'>");

	tableStart(pw, "Test Configuration Resolution", 2);

	String alertMessage = null;
	if (path != null) {
	if (resolver == null) {
	alertMessage = "Unable to access repository - please check system configuration.";
	}
	else if (contentResource == null) {
	alertMessage = "Path does not exist.";
	}
	}
	textField(pw, "Content Path", "path", path, alertMessage);

	tableRows(pw);
	selectField(pw, "Config Name", "configName", configName, configurationManager.getConfigurationNames());

	tableRows(pw);
	textField(pw, "Other Config Name", "configNameOther", configNameOther);

	tableRows(pw);
	checkboxField(pw, "Resource collection", "resourceCollection", resourceCollection);

	tableRows(pw);
	pw.println("<td></td>");
	pw.println("<td><input type='submit' value='Resolve'/></td>");
	tableEnd(pw);

	pw.println("</form>");

	pw.println("<br/>");

	if (contentResource != null && configName != null) {

	// context paths
	Iterator<ContextResource> contextResources = contextPathStrategyMultiplexer.findContextResources(contentResource);
	tableStart(pw, "Context paths", 3);
	pw.println("<th>Context path</th>");
	pw.println("<th>Config reference</th>");
	pw.println("<th>Ranking</th>");
	while (contextResources.hasNext()) {
	ContextResource contextResource = contextResources.next();
	tableRows(pw);
	pw.println("<td>" + Encode.forHtmlContent(contextResource.getResource().getPath()) + "</td>");
	pw.println("<td>" + Encode.forHtmlContent(contextResource.getConfigRef()) + "</td>");
	pw.println("<td>" + contextResource.getServiceRanking() + "</td>");
	}
	tableEnd(pw);

	pw.println("<br/>");

	// resolve configuration
	Collection<ConfigurationData> configDatas;
	if (resourceCollection) {
	configDatas = configurationManager.getConfigurationCollection(contentResource, configName).getItems();
	}
	else {
	ConfigurationData configData = configurationManager.getConfiguration(contentResource, configName);
	if (configData != null) {
	configDatas = Collections.singletonList(configData);
	}
	else {
	configDatas = Collections.emptyList();
	}
	}

	tableStart(pw, "Result", 6);

	if (configDatas.size() == 0) {
	pw.println("<td colspan='6'>");
	alertDiv(pw, "No matching item found.");
	pw.println("<br/> </td>");
	}
	else {

	pw.println("<th>Property</th>");
	pw.println("<th>Effective Value</th>");
	pw.println("<th>Value</th>");
	pw.println("<th>Default</th>");
	pw.println("<th>Inherited</th>");
	pw.println("<th>Overwritten</th>");

	for (ConfigurationData data : configDatas) {
	tableRows(pw);
	pw.println("<td colspan='6' style='background-color:#f3f3f3'>");
	pw.print("Path: " + Encode.forHtmlContent(data.getResourcePath()));
	pw.println("</td>");

	for (String propertyName : data.getPropertyNames()) {
	ValueInfo<?> valueInfo = data.getValueInfo(propertyName);
	if (valueInfo == null) {
	continue;
	}
	tableRows(pw);
	td(pw, propertyName);
	td(pw, valueInfo.getEffectiveValue());
	td(pw, valueInfo.getValue());
	td(pw, valueInfo.isDefault());

	String title = null;
	if (valueInfo.isInherited()) {
	title = "Source path: " + valueInfo.getConfigSourcePath();
	}
	td(pw, valueInfo.isInherited(), title);

	td(pw, valueInfo.isOverridden());
	}

	}

	}

	tableEnd(pw);
	}

	}
	finally {
	if (resolver != null) {
	resolver.close();
	}
	}
	}

	private void info(PrintWriter pw, String text) {
	pw.print("<p class='statline ui-state-highlight'>");
	pw.print(Encode.forHtmlContent(text));
	pw.println("</p>");
	}

	private void tableStart(PrintWriter pw, String title, int colspan) {
	pw.println("<table class='nicetable ui-widget'>");
	pw.println("<thead class='ui-widget-header'>");
	pw.println("<tr>");
	pw.print("<th colspan=");
	pw.print(String.valueOf(colspan));
	pw.print(">");
	pw.print(Encode.forHtmlContent(title));
	pw.println("</th>");
	pw.println("</tr>");
	pw.println("</thead>");
	pw.println("<tbody class='ui-widget-content'>");
	pw.println("<tr>");
	}

	private void tableEnd(PrintWriter pw) {
	pw.println("</tr>");
	pw.println("</tbody>");
	pw.println("</table>");
	}

	private void tableRows(PrintWriter pw) {
	pw.println("</tr>");
	pw.println("<tr>");
	}

	private void textField(PrintWriter pw, String label, String fieldName, String value, String... alertMessages) {
	pw.print("<td style='width:20%'>");
	pw.print(Encode.forHtmlContent(label));
	pw.println("</td>");
	pw.print("<td><input name='");
	pw.print(Encode.forHtmlAttribute(fieldName));
	pw.print("' value='");
	pw.print(Encode.forHtmlAttribute(StringUtils.defaultString(value)));
	pw.print("' style='width:100%'/>");
	for (String alertMessage : alertMessages) {
	alertDiv(pw, alertMessage);
	}
	pw.println("</td>");
	}

	private void selectField(PrintWriter pw, String label, String fieldName, String value, Collection<String> options) {
	pw.print("<td style='width:20%'>");
	pw.print(Encode.forHtmlContent(label));
	pw.println("</td>");
	pw.print("<td><select name='");
	pw.print(Encode.forHtmlAttribute(fieldName));
	pw.print("' style='width:100%'>");
	pw.print("<option value=''>(please select)</option>");
	for (String option : options) {
	pw.print("<option");
	if (StringUtils.equals(option, value)) {
	pw.print(" selected");
	}
	pw.print(">");
	pw.print(Encode.forHtmlAttribute(option));
	pw.print("</option>");
	}
	pw.print("</select>");
	pw.println("</td>");
	}

	private void checkboxField(PrintWriter pw, String label, String fieldName, boolean checked) {
	pw.print("<td style='width:20%'>");
	pw.print(Encode.forHtmlContent(label));
	pw.println("</td>");
	pw.print("<td><input type='checkbox' name='");
	pw.print(Encode.forHtmlAttribute(fieldName));
	pw.print("' value='true'");
	if (checked) {
	pw.print(" checked");
	}
	pw.print("/></td>");
	}

	private void alertDiv(PrintWriter pw, String text) {
	if (StringUtils.isBlank(text)) {
	return;
	}
	pw.println("<div>");
	pw.println("<span class='ui-icon ui-icon-alert' style='float:left'></span>");
	pw.print("<span style='float:left'>");
	pw.print(Encode.forHtmlContent(text));
	pw.println("</span>");
	pw.println("</div>");
	}

	private void td(PrintWriter pw, Object value, String... title) {
	pw.print("<td");
	if (title.length > 0 && !StringUtils.isBlank(title[0])) {
	pw.print(" title='");
	pw.print(Encode.forHtmlAttribute(title[0]));
	pw.print("'");
	}
	pw.print(">");

	if (value != null) {
	if (value.getClass().isArray()) {
	for (int i = 0; i < Array.getLength(value); i++) {
	Object itemValue = Array.get(value, i);
	pw.print(Encode.forHtmlContent(ObjectUtils.defaultIfNull(itemValue, "").toString()));
	pw.println("<br>");
	}
	}
	else {
	pw.print(Encode.forHtmlContent(value.toString()));
	}
	}

	if (title.length > 0 && !StringUtils.isBlank(title[0])) {
	pw.print("<span class='ui-icon ui-icon-info' style='float:left'></span>");
	}
	pw.print("</td>");
	}

	private ResourceResolver getResolver(HttpServletRequest request) {
	ResourceResolver resolver = null;
	try {
	resolver = resolverFactory.getServiceResourceResolver(null);
	}
	catch (final LoginException ex) {
	// fallback if no service user is registered - try to get current web console resource resolver
	resolver = (ResourceResolver)request.getAttribute("org.apache.sling.auth.core.ResourceResolver");
	if (resolver == null) {
	log.warn("Unable to get resource resolver - please ensure a system user is configured: {}", ex.getMessage());
	}
	else {
	log.debug("No system user configured, use resource resolver from web console.");
	}
	}
	return resolver;
	}

	}