drag and drop problems with parameters
leeovan Jul 11, 2007 4:53 PMhello ive been trying to get the drag and drop working for a while now and have run into a few problems.
I have created a bean based on the one i found in the rich faces source
import java.util.ArrayList; import java.util.List; import org.jboss.seam.annotations.Name; @Name("dndBean") public class DragAndDropBean { private List<String> types = new ArrayList<String>(); private Object dragValue; private Object testParam; private List<String> container = new ArrayList<String>(); private List<String> sourceList = new ArrayList<String>(); public DragAndDropBean() { super(); types.add("PHP"); types.add("JAVA"); sourceList.add("item1"); sourceList.add("item2"); } public void processDrop(org.ajax4jsf.dnd.event.DropEvent event) { System.out.println("Bean.processDrop()"); this.dragValue = event.getDragValue(); } public void processDrag(org.ajax4jsf.dnd.event.DragEvent dragEvent) { System.out.println("Bean.processDrag()"); } public List getTypes() { return types; } public String dragAction() { System.out.println("Bean.dragAction()"); return null; } public String dropAction() { System.out.println("Bean.dropAction()"); return null; } public Object getDragValue() { return dragValue; } public Object getTestParam() { return testParam; } public void setTestParam(Object testParam) { this.testParam = testParam; System.out.println("Bean.setTestParam()" + testParam); } public List<String> getContainer() { return container; } public void setContainer(List<String> container) { this.container = container; System.out.println("Bean.setContainer()" + container); } public List<String> getSourceList() { return sourceList; } public void setSourceList(List<String> sourceList) { this.sourceList = sourceList; System.out.println("Bean.setSourceList()" + sourceList); } public void reset(){ System.out.println("RESET"); } }
and this is the front
<ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://jboss.com/products/seam/taglib" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:a="https://ajax4jsf.dev.java.net/ajax" xmlns:rich="http://richfaces.ajax4jsf.org/rich" id="testComponent" styleClass="edit"> <rich:dragIndicator id="indicator"></rich:dragIndicator> <h:form id="form"> <h:panelGrid columnClasses="panelc" columns="2" width="50%"> <rich:panel style="width:100px"> <f:facet name="header"> <h:outputText value="Source List" /> </f:facet> <h:dataTable id="src" columns="1" value="#{dndBean.sourceList}" var="source" > <h:column> <a:outputPanel style="border:1px solid gray;padding:2px;" layout="block"> <rich:dragSupport dragType="employee" dragValue="#{source}" > <rich:dndParam name="label" value="#{source}" /> </rich:dragSupport> <h:outputText value="#{source}"></h:outputText> </a:outputPanel> </h:column> </h:dataTable> </rich:panel> <rich:panel> <f:facet name="header"> <h:outputText value="Destination" /> </f:facet> <rich:dropSupport id="php" reRender="src, php, destinationtable" acceptedTypes="employee" dropValue="employee" dropListener="#{dndBean.processDrop}" > </rich:dropSupport> <h:dataTable id="destinationtable" columns="1" value="#{dndBean.container}" var="destination"> <h:column> <h:outputText value="#{destination}"></h:outputText> </h:column> </h:dataTable> </rich:panel> </h:panelGrid> <a:commandButton action="#{dndBean.reset}" value="Start Over" reRender="src,destinationtable" /> </h:form> </ui:composition>
now here comes the problem. i cant seem to find the method i call on the dropListener="#{dndBean.processDrop} section.. if i change this to dropListener="#{dndBean.dropAction} i get the correct output.. here is the actual stack trace. looks like its a problem with passing parameters..
21:36:45,421 ERROR [ExceptionFilter] uncaught exception javax.servlet.ServletException: /DragAndDropComponent.xhtml @62,20 dropListener="#{dndBean.processDrop}": Method not found: uk.co.anotion.entity.jobs.DragAndDropBean@183fc68.processDrop(org.ajax4jsf.dnd.event.DropEvent) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:152) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96) at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112) at java.lang.Thread.run(Unknown Source) 21:36:45,421 ERROR [ExceptionFilter] exception root cause javax.faces.el.MethodNotFoundException: /DragAndDropComponent.xhtml @62,20 dropListener="#{dndBean.processDrop}": Method not found: uk.co.anotion.entity.jobs.DragAndDropBean@183fc68.processDrop(org.ajax4jsf.dnd.event.DropEvent) at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:71) at org.richfaces.component.UIDropSupport.broadcast(UIDropSupport.java:79) at org.ajax4jsf.framework.ajax.AjaxViewRoot.processEvents(AjaxViewRoot.java:180) at org.ajax4jsf.framework.ajax.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:156) at org.ajax4jsf.framework.ajax.JsfOneOneInvoker.invokeOnRegionOrRoot(JsfOneOneInvoker.java:62) at org.ajax4jsf.framework.ajax.AjaxContext.invokeOnRegionOrRoot(AjaxContext.java:176) at org.ajax4jsf.framework.ajax.AjaxViewRoot.processDecodes(AjaxViewRoot.java:267) at org.apache.myfaces.lifecycle.LifecycleImpl.applyRequestValues(LifecycleImpl.java:219) at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:71) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:137) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57) at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60) at org.jboss.seam.web.SeamFilter$FilterChai
cheers