6 Replies Latest reply on Mar 27, 2007 3:36 PM by nbelaevski

drag and drop support programmatically

byarger Mar 16, 2007 1:47 PM

I've got some HtmlPanelGrids that I'm creating programmatically, and I'd like to add drag and drop support. I've tried emulating the tags in the examples provided, but I'm getting a NullPointerException in org.richfaces.component.UIDragSupport.getEventHandler(UIDragSupport.java:110)

The code is calling getParent().getClientId(context), but getParent() is returning null. Here are some snippets of code where I'm adding the drag support:

HtmlDragSupport dragSupport = (HtmlDragSupport) FacesServices.getFacesComponent(HtmlDragSupport.COMPONENT_TYPE);
dragSupport.setDragType("appointment");
dragSupport.setDragValue(trainerHalfHourBlock.getId());
HtmlDndParam param = (HtmlDndParam) FacesServices.getFacesComponent(HtmlDndParam.COMPONENT_TYPE);
param.setName("label");
param.setValue(trainerHalfHourBlock.getId());
dragSupport.getChildren().add(param);

trainerHalfHourBlock.getChildren().add(dragSupport);

I have a very similar block for all the drop zones. Here is the stacktrace that I'm getting when I try to hit the page:

Caused by: class javax.faces.FacesException : Could not get property onmousedown of component scheduleForm:trainerviewsubview:TRAINER_BLOCK144_1500
- javax.faces.component._ComponentAttributesMap.getComponentProperty(_ComponentAttributesMap.java:392)
- javax.faces.component._ComponentAttributesMap.get(_ComponentAttributesMap.java:235)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.renderHTMLAttribute(HtmlRendererUtils.java:535)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.renderHTMLAttributes(HtmlRendererUtils.java:549)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:93)
- javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
- org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:419)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:229)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:101)
- javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:252)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
- com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:573)
- org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
- org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:229)
- org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
- org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
- javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
- com.frappier.aims.web.servlet.ErrorHandler.service(ErrorHandler.java:69)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:100)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)
- org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:264)
- org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:107)
- org.acegisecurity.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:72)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:110)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.wrapper.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:81)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.ui.logout.LogoutFilter.doFilter(LogoutFilter.java:106)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:229)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:148)
- org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:98)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
- org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
- org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
- org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
- org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
- org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
- org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
- org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
- org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
- org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
- org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
- org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
- java.lang.Thread.run(Thread.java:619)

Caused by: class java.lang.reflect.InvocationTargetException : null
- sun.reflect.GeneratedMethodAccessor267.invoke(Unknown Source)
- sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
- java.lang.reflect.Method.invoke(Method.java:597)
- javax.faces.component._ComponentAttributesMap.getComponentProperty(_ComponentAttributesMap.java:387)
- javax.faces.component._ComponentAttributesMap.get(_ComponentAttributesMap.java:235)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.renderHTMLAttribute(HtmlRendererUtils.java:535)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.renderHTMLAttributes(HtmlRendererUtils.java:549)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:93)
- javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
- org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:419)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:229)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:101)
- javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:252)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
- com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:573)
- org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
- org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:229)
- org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
- org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
- javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
- com.frappier.aims.web.servlet.ErrorHandler.service(ErrorHandler.java:69)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:100)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)
- org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:264)
- org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:107)
- org.acegisecurity.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:72)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:110)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.wrapper.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:81)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.ui.logout.LogoutFilter.doFilter(LogoutFilter.java:106)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:229)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:148)
- org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:98)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
- org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
- org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
- org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
- org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
- org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
- org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
- org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
- org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
- org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
- org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
- org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
- java.lang.Thread.run(Thread.java:619)

Caused by: class java.lang.NullPointerException : null
- org.richfaces.component.UIDragSupport.getEventHandler(UIDragSupport.java:110)
- org.richfaces.component.UIDragSupport.getEventString(UIDragSupport.java:135)
- org.ajax4jsf.framework.ajax.EventValueBinding.getValue(EventValueBinding.java:87)
- javax.faces.component.html._ComponentUtils.getStringValue(_ComponentUtils.java:36)
- javax.faces.component.html.HtmlPanelGrid.getOnmousedown(HtmlPanelGrid.java:280)
- sun.reflect.GeneratedMethodAccessor267.invoke(Unknown Source)
- sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
- java.lang.reflect.Method.invoke(Method.java:597)
- javax.faces.component._ComponentAttributesMap.getComponentProperty(_ComponentAttributesMap.java:387)
- javax.faces.component._ComponentAttributesMap.get(_ComponentAttributesMap.java:235)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.renderHTMLAttribute(HtmlRendererUtils.java:535)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.renderHTMLAttributes(HtmlRendererUtils.java:549)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:93)
- javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
- org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:419)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:229)
- org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:101)
- javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:252)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
- com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
- com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:573)
- org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
- org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:229)
- org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
- org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
- javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
- com.frappier.aims.web.servlet.ErrorHandler.service(ErrorHandler.java:69)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:100)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)
- org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:264)
- org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:107)
- org.acegisecurity.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:72)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:110)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.wrapper.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:81)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.ui.logout.LogoutFilter.doFilter(LogoutFilter.java:106)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:229)
- org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)
- org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:148)
- org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:98)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
- org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)
- org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
- org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
- org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
- org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
- org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
- org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
- org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
- org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
- org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
- org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
- org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
- org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
- org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
- java.lang.Thread.run(Thread.java:619)

Any ideas? I tried calling setParent on the DragSupport class, which I don't think you're supposed to do (I think adding to the children collection is the correct way to add to the component tree) but it was still null when it got to that spot. I'm using Facelets 1.1.12, Myfaces 1.1.5, Ajax4jsf 1.1.0, and RichFaces 3.0.0.

1. Re: drag and drop support programmatically

alexsmirnov Mar 16, 2007 2:55 PM (in response to byarger)

Try to set up the Id for dragSupport component.
Actions
2. Re: drag and drop support programmatically

byarger Mar 16, 2007 3:55 PM (in response to byarger)

Thanks for the response. I gave it a unique ID, but the same exception happens. I had actually had that in there previously, but took it out to match exactly the demo which has no id in the example tag.

Any other suggestions?
Actions
3. Re: drag and drop support programmatically

sergeysmirnov Mar 16, 2007 4:04 PM (in response to byarger)

JSF assigns the ids to the components automatically when are on the page. However, you need to take care about it, when you create the hierarchy pro grammatically.
Actions
4. Re: drag and drop support programmatically

byarger Mar 16, 2007 4:13 PM (in response to byarger)

Yes, I always add unique IDs to programmatically created components, it wasn't in this one because I had removed it as a test to see if perhaps that was the problem. Its back now, but the problem is still there.

From what I read in the JSF apidocs the parent attribute should be handled by the framework, and not set directly. I don't know when this is supposed to happen, but it's null when the getEventHandler() method is being called.
Actions
5. Re: drag and drop support programmatically

byarger Mar 18, 2007 11:27 PM (in response to byarger)

The problem was in my code, not in the RichFaces library. Thanks for the help, and for the great library!
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6. Re: drag and drop support programmatically

nbelaevski Mar 27, 2007 3:36 PM (in response to byarger)

Hello!

The problem should be fixed now in trunk.
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