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FlowingCode / GridHelpers

Several grid recipes for Vaadin 23+ (and 22), ready to use. DOES NOT require extending Grid.
https://addonsv23.flowingcode.com/grid-helpers
Apache License 2.0
12 stars 1 forks source link

Exception when reattaching a view containing a Grid configured by Grid Exporter #50

Closed brunoagretti closed 1 year ago

brunoagretti commented 1 year ago

To reproduce the issue, add the following extracts of code onto a view containing a grid (in this case I was using Vaadin's starter project configured with a MasterDetails view). In MasterDetailsView:

        Button testBtn = new Button("test",ce->{
            Component savedView = this;

            UI.getCurrent().navigate(this.getClass()).ifPresent(oldView->{
                Component thisComponent = Component.class.cast(oldView);
                ((AppLayout) thisComponent.getParent().get()).setContent(savedView);                    
            });

        }); 
        this.add(testBtn);

When clicking the button, the reattachment works fine. However, if GridExporter is configured onto the grid in the following way:

    private void setupGridExporter() {
        GridExporter<SamplePerson> exporter = GridExporter.createFor(grid);
        grid.getElement().getStyle().set("border-top", "none");
        HashMap<String, String> placeholders = new HashMap<>();
        placeholders.put("${date}", new SimpleDateFormat().format(Calendar.getInstance().getTime()));

        grid.getColumns().forEach(column -> {
            GridHelper.setHidingToggleCaption(column, column.getHeaderText());
        });
        GridHelper.setColumnToggleVisible(grid, true);

        exporter.setCsvExportEnabled(false);
        exporter.setTitle("Información de SamplePerson");
        exporter.setFileName("sample" + new SimpleDateFormat("yyyyddMM").format(Calendar.getInstance().getTime()));
    }

Now, after calling setupGridExporter() and clicking the button, the Grid has layouting issues and the following exception is thrown: 

2022-12-22 10:12:42.218 ERROR 5452 --- [nio-8080-exec-8] c.v.flow.server.DefaultErrorHandler      : 

java.lang.IllegalArgumentException: Cannot join cells that are not adjacent
    at com.vaadin.flow.component.grid.AbstractRow.lambda$join$6(AbstractRow.java:290) ~[vaadin-grid-flow-23.2.10.jar:na]
    at java.base/java.util.stream.Streams$RangeIntSpliterator.forEachRemaining(Streams.java:104) ~[na:na]
    at java.base/java.util.stream.IntPipeline$Head.forEach(IntPipeline.java:617) ~[na:na]
    at com.vaadin.flow.component.grid.AbstractRow.join(AbstractRow.java:288) ~[vaadin-grid-flow-23.2.10.jar:na]
    at com.vaadin.flow.component.grid.FooterRow.join(FooterRow.java:86) ~[vaadin-grid-flow-23.2.10.jar:na]
    at com.vaadin.flow.component.grid.FooterRow.join(FooterRow.java:30) ~[vaadin-grid-flow-23.2.10.jar:na]
    at com.vaadin.flow.component.grid.AbstractRow.join(AbstractRow.java:215) ~[vaadin-grid-flow-23.2.10.jar:na]
    at com.vaadin.flow.component.grid.FooterRow.join(FooterRow.java:30) ~[vaadin-grid-flow-23.2.10.jar:na]
    at com.flowingcode.vaadin.addons.gridhelpers.FooterToolbarGridHelper.setFooterToolbar(FooterToolbarGridHelper.java:24) ~[grid-helpers-0.3.1.jar:0.3.1]
    at com.flowingcode.vaadin.addons.gridhelpers.GridHelper.addToolbarFooter(GridHelper.java:318) ~[grid-helpers-0.3.1.jar:0.3.1]
    at com.flowingcode.vaadin.addons.gridexporter.GridExporter.lambda$createFor$afa35fd0$1(GridExporter.java:120) ~[grid-exporter-addon-1.3.0.jar:1.3.0]
    at com.vaadin.flow.dom.Element$1.execute(Element.java:1241) ~[flow-server-23.2.7.jar:23.2.7]
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na]
    at com.vaadin.flow.internal.StateNode.fireAttachListeners(StateNode.java:844) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.internal.StateNode.onAttach(StateNode.java:328) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.internal.StateNode.setParent(StateNode.java:280) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.internal.nodefeature.NodeFeature.attachPotentialChild(NodeFeature.java:80) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.internal.nodefeature.StateNodeNodeList.add(StateNodeNodeList.java:55) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.internal.nodefeature.ElementChildrenList.add(ElementChildrenList.java:44) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.dom.impl.AbstractNodeStateProvider.insertChild(AbstractNodeStateProvider.java:104) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.dom.Node.insertChild(Node.java:386) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.dom.Node.appendChild(Node.java:163) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.dom.Node.appendChild(Node.java:147) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.component.applayout.AppLayout.add(AppLayout.java:338) ~[vaadin-app-layout-flow-23.2.10.jar:na]
    at com.vaadin.flow.component.applayout.AppLayout.setContent(AppLayout.java:236) ~[vaadin-app-layout-flow-23.2.10.jar:na]
    at com.example.application.VistaPersistible.setVista(VistaPersistible.java:11) ~[classes/:na]
    at com.example.application.views.masterdetail.MasterDetailView.lambda$7(MasterDetailView.java:156) ~[classes/:na]
    at java.base/java.util.Optional.ifPresent(Optional.java:178) ~[na:na]
    at com.example.application.views.masterdetail.MasterDetailView.lambda$6(MasterDetailView.java:155) ~[classes/:na]
    at com.vaadin.flow.component.ComponentEventBus.fireEventForListener(ComponentEventBus.java:233) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.component.ComponentEventBus.handleDomEvent(ComponentEventBus.java:475) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.component.ComponentEventBus.lambda$addDomTrigger$dd1b7957$1(ComponentEventBus.java:292) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.internal.nodefeature.ElementListenerMap.lambda$fireEvent$2(ElementListenerMap.java:447) ~[flow-server-23.2.7.jar:23.2.7]
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na]
    at com.vaadin.flow.internal.nodefeature.ElementListenerMap.fireEvent(ElementListenerMap.java:447) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.server.communication.rpc.EventRpcHandler.handleNode(EventRpcHandler.java:62) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.server.communication.rpc.AbstractRpcInvocationHandler.handle(AbstractRpcInvocationHandler.java:75) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocationData(ServerRpcHandler.java:438) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.server.communication.ServerRpcHandler.lambda$handleInvocations$1(ServerRpcHandler.java:419) ~[flow-server-23.2.7.jar:23.2.7]
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na]
    at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:419) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:320) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:115) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.server.VaadinService.handleRequest(VaadinService.java:1564) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.server.VaadinServlet.service(VaadinServlet.java:369) ~[flow-server-23.2.7.jar:23.2.7]
    at com.vaadin.flow.spring.SpringServlet.service(SpringServlet.java:106) ~[vaadin-spring-23.2.7.jar:na]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:779) ~[tomcat-embed-core-9.0.68.jar:4.0.FR]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:353) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:313) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:141) ~[spring-webmvc-5.3.23.jar:5.3.23]
    at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177) ~[spring-webmvc-5.3.23.jar:5.3.23]
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:51) ~[spring-webmvc-5.3.23.jar:5.3.23]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1071) ~[spring-webmvc-5.3.23.jar:5.3.23]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:964) ~[spring-webmvc-5.3.23.jar:5.3.23]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.23.jar:5.3.23]
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.23.jar:5.3.23]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:696) ~[tomcat-embed-core-9.0.68.jar:4.0.FR]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.23.jar:5.3.23]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:779) ~[tomcat-embed-core-9.0.68.jar:4.0.FR]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:337) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:115) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:81) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:122) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:116) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:126) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:81) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:109) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:149) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:223) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:217) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:103) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:89) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:117) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.23.jar:5.3.23]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.23.jar:5.3.23]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:112) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:82) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:55) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.23.jar:5.3.23]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.session.DisableEncodeUrlFilter.doFilterInternal(DisableEncodeUrlFilter.java:42) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.23.jar:5.3.23]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:221) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:186) ~[spring-security-web-5.7.4.jar:5.7.4]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:354) ~[spring-web-5.3.23.jar:5.3.23]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:267) ~[spring-web-5.3.23.jar:5.3.23]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.23.jar:5.3.23]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.23.jar:5.3.23]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.23.jar:5.3.23]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.23.jar:5.3.23]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.23.jar:5.3.23]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.23.jar:5.3.23]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]
javier-godoy commented 1 year ago

On attach, the addon attempts to add a new footer (event if the footer has already been attached). Since GridHelper doesn't support multiple footers, if fails with exception instead of duplicating the footer (which wouldn't be the expected behavior, either).

https://github.com/FlowingCode/GridExporterAddon/blob/6e01700f682fff28157dd599210f62b80479ebe4/src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporter.java#L91-L122