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package edu.utexas.tacc.helpers; | |
import com.github.jknack.handlebars.Helper; | |
import com.github.jknack.handlebars.Options; | |
import com.liferay.portal.kernel.language.LanguageUtil; | |
import com.liferay.portal.kernel.servlet.SessionErrors; | |
import com.liferay.portal.kernel.servlet.SessionMessages; | |
import com.liferay.portal.kernel.util.JavaConstants; | |
import javax.portlet.PortletConfig; | |
import javax.portlet.PortletRequest; | |
import java.io.IOException; | |
import java.util.ArrayList; | |
import java.util.Iterator; | |
import java.util.List; | |
import java.util.Locale; | |
/** | |
* Handlebars.java helper for Liferay SessionMessages and SessionErrors. | |
* | |
* Usage: | |
* <pre> | |
* // Java code | |
* HandlebarsViewResolver resolver = new HandlebarsViewResolver(); | |
* resolver.registerHelper("messages", new SessionMessagesHelper()); | |
* | |
* // In hbs template; portletRequest is a javax.portlet.PortletRequest object | |
* {{messages portletRequest}} | |
* </pre> | |
* | |
* | |
* @author mrhanlon | |
*/ | |
public class SessionMessagesHelper implements Helper<PortletRequest> { | |
@Override | |
public CharSequence apply(PortletRequest request, Options options) throws IOException { | |
StringBuilder sb = new StringBuilder(); | |
PortletConfig portletConfig = (PortletConfig) request.getAttribute(JavaConstants.JAVAX_PORTLET_CONFIG); | |
// errors | |
if (! SessionErrors.isEmpty(request)) { | |
List<String> messages = new ArrayList<>(); | |
for (Iterator<String> it = SessionErrors.iterator(request); it.hasNext(); ) { | |
String key = it.next(); | |
Object value = SessionErrors.get(request, key); | |
if (value == null) { | |
messages.add(LanguageUtil.get(portletConfig, Locale.getDefault(), key)); | |
} else { | |
messages.add(LanguageUtil.get(portletConfig, Locale.getDefault(), value.toString())); | |
} | |
} | |
if (messages.size() > 0) { | |
sb.append("<div class=\"alert alert-danger\">"); | |
if (messages.size() == 1) { | |
sb.append(messages.get(0)); | |
} else { | |
sb.append("<ul>"); | |
for (String m : messages) { | |
sb.append("<li>").append(m).append("</li>"); | |
} | |
sb.append("</ul>"); | |
} | |
sb.append("</div>"); | |
} | |
SessionErrors.clear(request); | |
} | |
// success | |
if (! SessionMessages.isEmpty(request)) { | |
List<String> messages = new ArrayList<>(); | |
for (Iterator<String> it = SessionMessages.iterator(request); it.hasNext(); ) { | |
String key = it.next(); | |
Object value = SessionMessages.get(request, key); | |
if (value == null) { | |
messages.add(LanguageUtil.get(portletConfig, Locale.getDefault(), key)); | |
} else { | |
messages.add(LanguageUtil.get(portletConfig, Locale.getDefault(), value.toString())); | |
} | |
} | |
if (messages.size() > 0) { | |
sb.append("<div class=\"alert alert-success\">"); | |
if (messages.size() == 1) { | |
sb.append(messages.get(0)); | |
} else { | |
sb.append("<ul>"); | |
for (String m : messages) { | |
sb.append("<li>").append(m).append("</li>"); | |
} | |
sb.append("</ul>"); | |
} | |
sb.append("</div>"); | |
} | |
SessionMessages.clear(request); | |
} | |
return sb.toString(); | |
} | |
} |
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