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Posted to commits@myfaces.apache.org by lo...@apache.org on 2021/04/08 12:58:18 UTC

[myfaces-tobago] 01/03: feat: better exception handling

This is an automated email from the ASF dual-hosted git repository.

lofwyr pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/myfaces-tobago.git

commit e0121c439d973f85fe8a8930a2813f4337d8ceeb
Author: Udo Schnurpfeil <ud...@irian.eu>
AuthorDate: Thu Apr 8 12:27:31 2021 +0200

    feat: better exception handling
    
    move AJAX handling to the global exception handler
    fixing/workaround some problems on client site when replace the whole DOM
    
    issue: TOBAGO-1946
---
 tobago-core/src/main/faces-config/faces-config.xml |   1 -
 .../tobago/context/TobagoExceptionHandler.java     | 196 ++++++++++++++-------
 .../tobago/webapp/AjaxExceptionHandler.java        | 123 -------------
 .../tobago/webapp/AjaxExceptionHandlerFactory.java |  35 ----
 .../tobago-theme-standard/src/main/js/tobago.js    |  25 ++-
 .../src/main/js/tobago.js.map                      |   2 +-
 .../src/main/js/tobago.min.js                      |   4 +-
 .../src/main/js/tobago.min.js.map                  |   2 +-
 .../tobago-theme-standard/src/main/ts/tobago-in.ts |   4 +
 .../src/main/ts/tobago-page.ts                     |   7 +-
 .../src/main/ts/tobago-utils.ts                    |   3 +
 11 files changed, 167 insertions(+), 235 deletions(-)

diff --git a/tobago-core/src/main/faces-config/faces-config.xml b/tobago-core/src/main/faces-config/faces-config.xml
index eacf191..9e224fd 100644
--- a/tobago-core/src/main/faces-config/faces-config.xml
+++ b/tobago-core/src/main/faces-config/faces-config.xml
@@ -66,7 +66,6 @@
   </render-kit>
 
   <factory>
-    <exception-handler-factory>org.apache.myfaces.tobago.webapp.AjaxExceptionHandlerFactory</exception-handler-factory>
     <exception-handler-factory>org.apache.myfaces.tobago.context.TobagoExceptionHandlerFactory</exception-handler-factory>
   </factory>
 
diff --git a/tobago-core/src/main/java/org/apache/myfaces/tobago/context/TobagoExceptionHandler.java b/tobago-core/src/main/java/org/apache/myfaces/tobago/context/TobagoExceptionHandler.java
index f2f6040..3d121d6 100644
--- a/tobago-core/src/main/java/org/apache/myfaces/tobago/context/TobagoExceptionHandler.java
+++ b/tobago-core/src/main/java/org/apache/myfaces/tobago/context/TobagoExceptionHandler.java
@@ -19,6 +19,7 @@
 
 package org.apache.myfaces.tobago.context;
 
+import org.apache.myfaces.tobago.util.WebXmlUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -31,13 +32,16 @@ import javax.faces.component.UIViewRoot;
 import javax.faces.context.ExceptionHandler;
 import javax.faces.context.ExceptionHandlerWrapper;
 import javax.faces.context.FacesContext;
+import javax.faces.event.AbortProcessingException;
 import javax.faces.event.ExceptionQueuedEvent;
 import javax.faces.event.ExceptionQueuedEventContext;
 import javax.faces.event.PhaseId;
 import javax.faces.event.PreRenderViewEvent;
 import javax.faces.view.ViewDeclarationLanguage;
+import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.FileNotFoundException;
+import java.io.IOException;
 import java.lang.invoke.MethodHandles;
 import java.util.Iterator;
 
@@ -45,86 +49,142 @@ public class TobagoExceptionHandler extends ExceptionHandlerWrapper {
 
   private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
 
-  private ExceptionHandler wrapped;
-
-  public TobagoExceptionHandler(final ExceptionHandler wrapped) {
-    this.wrapped = wrapped;
-  }
-
-  @Override
-  public ExceptionHandler getWrapped() {
-    return wrapped;
+  public TobagoExceptionHandler(final ExceptionHandler delegate) {
+    super(delegate);
   }
 
   @Override
   public void handle() throws FacesException {
 
-    final Iterator<ExceptionQueuedEvent> iterator = getUnhandledExceptionQueuedEvents().iterator();
-    while (iterator.hasNext()) {
-      final ExceptionQueuedEvent event = iterator.next();
-      final ExceptionQueuedEventContext context = (ExceptionQueuedEventContext) event.getSource();
-      final Throwable cause = this.getWrapped().getRootCause(context.getException());
-      final FacesContext facesContext = FacesContext.getCurrentInstance();
-      final NavigationHandler nav = facesContext.getApplication().getNavigationHandler();
-
-      if (cause instanceof ViewExpiredException
-          || cause != null && cause.getCause() instanceof ViewExpiredException) {
-        final ViewExpiredException viewExpiredException = (ViewExpiredException)
-            (cause instanceof ViewExpiredException ? cause : cause.getCause());
-        try {
-          facesContext.addMessage(null,
-              new FacesMessage(FacesMessage.SEVERITY_WARN,
-                  "The view has been expired!",
-                  "Please check the given data or try to start from the beginning."));
-          nav.handleNavigation(facesContext, null, viewExpiredException.getViewId());
-          facesContext.renderResponse();
-          LOG.debug("Handling ViewExpiredException on viewId: {}", viewExpiredException.getViewId());
-        } finally {
-          iterator.remove();
-        }
-      } else {
-        try {
-          final boolean error404 = cause instanceof FileNotFoundException
-              || cause != null && cause.getCause() instanceof FileNotFoundException;
-          final FacesMessage message;
-          if (error404) {
-            message = new FacesMessage(FacesMessage.SEVERITY_ERROR,
-                "The page was not found!",
-                "The requested page was not found!");
-            facesContext.getExternalContext().setResponseStatus(HttpServletResponse.SC_NOT_FOUND);
-            LOG.warn("Handling 404 exception.");
+    final FacesContext facesContext = FacesContext.getCurrentInstance();
+
+    if (facesContext.getPartialViewContext().isAjaxRequest()) {
+      final Iterator<ExceptionQueuedEvent> events = getUnhandledExceptionQueuedEvents().iterator();
+      if (events.hasNext()) {
+        final Throwable exception = events.next().getContext().getException();
+        if (!(exception instanceof AbortProcessingException)) {
+          final String errorPageLocation = WebXmlUtils.getErrorPageLocation(exception);
+
+          if (errorPageLocation != null
+              && (facesContext.getCurrentPhaseId() != PhaseId.RENDER_RESPONSE
+              || !facesContext.getExternalContext().isResponseCommitted())) {
+
+            try {
+              final HttpServletRequest request = (HttpServletRequest) facesContext.getExternalContext().getRequest();
+              final HttpServletResponse response =
+                  (HttpServletResponse) facesContext.getExternalContext().getResponse();
+
+              request.setAttribute("javax.servlet.error.exception", exception);
+              request.setAttribute("javax.servlet.error.exception_type", exception.getClass());
+              request.setAttribute("javax.servlet.error.message", exception.getMessage());
+              request.setAttribute("javax.servlet.error.request_uri", request.getRequestURI());
+              request.setAttribute("javax.servlet.error.status_code", HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+
+              response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+
+              renderErrorPage(facesContext, errorPageLocation);
+              cleanupExceptionQueuedEvents();
+            } catch (final IOException e) {
+              throw new FacesException(e);
+            }
           } else {
-            message = new FacesMessage(FacesMessage.SEVERITY_ERROR,
-                "An unknown error has occurred!",
-                "An unknown error has occurred!");
-            facesContext.getExternalContext().setResponseStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
-            LOG.warn("Handling 500 exception.", cause);
+            LOG.debug("Can't return an error page. errorPageLocation='{}'", errorPageLocation);
           }
-          facesContext.addMessage(null, message);
-          final String viewId = "/tobago/error.xhtml";
+        }
+      }
+    } else {
+      final Iterator<ExceptionQueuedEvent> iterator = getUnhandledExceptionQueuedEvents().iterator();
+      while (iterator.hasNext()) {
+        final ExceptionQueuedEvent event = iterator.next();
+        final ExceptionQueuedEventContext context = (ExceptionQueuedEventContext) event.getSource();
+        final Throwable cause = this.getWrapped().getRootCause(context.getException());
+        final NavigationHandler nav = facesContext.getApplication().getNavigationHandler();
 
-          // when the rendering was not yet started, we can forward to an error page
-          if (event.getContext().getPhaseId().getOrdinal() < PhaseId.RENDER_RESPONSE.getOrdinal()) {
-            nav.handleNavigation(facesContext, null, viewId);
+        if (cause instanceof ViewExpiredException
+            || cause != null && cause.getCause() instanceof ViewExpiredException) {
+          final ViewExpiredException viewExpiredException = (ViewExpiredException)
+              (cause instanceof ViewExpiredException ? cause : cause.getCause());
+          try {
+            facesContext.addMessage(null,
+                new FacesMessage(FacesMessage.SEVERITY_WARN,
+                    "The view has been expired!",
+                    "Please check the given data or try to start from the beginning."));
+            nav.handleNavigation(facesContext, null, viewExpiredException.getViewId());
             facesContext.renderResponse();
-          } else {
-            final HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse();
-            response.resetBuffer(); // undo rendering, if you can.
-            final ViewHandler viewHandler = facesContext.getApplication().getViewHandler();
-            final ViewDeclarationLanguage vdl = viewHandler.getViewDeclarationLanguage(facesContext, viewId);
-            final UIViewRoot viewRoot = viewHandler.createView(facesContext, viewId);
-            vdl.buildView(facesContext, viewRoot);
-            facesContext.getApplication().publishEvent(facesContext, PreRenderViewEvent.class, viewRoot);
-            vdl.renderView(facesContext, viewRoot);
-            facesContext.responseComplete();
+            LOG.debug("Handling ViewExpiredException on viewId: {}", viewExpiredException.getViewId());
+          } finally {
+            iterator.remove();
+          }
+        } else {
+          try {
+            final boolean error404 = cause instanceof FileNotFoundException
+                || cause != null && cause.getCause() instanceof FileNotFoundException;
+            final FacesMessage message;
+            if (error404) {
+              message = new FacesMessage(FacesMessage.SEVERITY_ERROR,
+                  "The page was not found!",
+                  "The requested page was not found!");
+              facesContext.getExternalContext().setResponseStatus(HttpServletResponse.SC_NOT_FOUND);
+              LOG.warn("Handling 404 exception.");
+            } else {
+              message = new FacesMessage(FacesMessage.SEVERITY_ERROR,
+                  "An unknown error has occurred!" + " xxx",
+                  "An unknown error has occurred!" + " xxx");
+              facesContext.getExternalContext().setResponseStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+              LOG.warn("Handling 500 exception.", cause);
+            }
+            facesContext.addMessage(null, message);
+            final String viewId = "/tobago/error.xhtml";
+
+            // when the rendering was not yet started, we can forward to an error page
+            if (event.getContext().getPhaseId().getOrdinal() < PhaseId.RENDER_RESPONSE.getOrdinal()) {
+              nav.handleNavigation(facesContext, null, viewId);
+              facesContext.renderResponse();
+            } else {
+              final HttpServletResponse response =
+                  (HttpServletResponse) facesContext.getExternalContext().getResponse();
+              response.resetBuffer(); // undo rendering, if you can.
+              final ViewHandler viewHandler = facesContext.getApplication().getViewHandler();
+              final ViewDeclarationLanguage vdl = viewHandler.getViewDeclarationLanguage(facesContext, viewId);
+              final UIViewRoot viewRoot = viewHandler.createView(facesContext, viewId);
+              vdl.buildView(facesContext, viewRoot);
+              facesContext.getApplication().publishEvent(facesContext, PreRenderViewEvent.class, viewRoot);
+              vdl.renderView(facesContext, viewRoot);
+              facesContext.responseComplete();
+            }
+          } catch (Exception e) {
+            LOG.error("Exception while exception handling!", e);
+          } finally {
+            iterator.remove();
           }
-        } catch (Exception e) {
-          LOG.error("Exception while exception handling!", e);
-        } finally {
-          iterator.remove();
         }
       }
     }
-    getWrapped().handle();
+
+    super.handle();
+  }
+
+  private void renderErrorPage(final FacesContext facesContext, final String errorPageLocation) throws IOException {
+    final ViewHandler viewHandler = facesContext.getApplication().getViewHandler();
+    final UIViewRoot viewRoot = viewHandler.createView(facesContext, errorPageLocation);
+    facesContext.setViewRoot(viewRoot);
+    facesContext.getPartialViewContext().setRenderAll(true);
+
+    final ViewDeclarationLanguage viewDeclarationLanguage = viewHandler
+        .getViewDeclarationLanguage(facesContext, errorPageLocation);
+    viewDeclarationLanguage.buildView(facesContext, viewRoot);
+    facesContext.getApplication().publishEvent(facesContext, PreRenderViewEvent.class, viewRoot);
+    viewDeclarationLanguage.renderView(facesContext, viewRoot);
+
+    facesContext.responseComplete();
+  }
+
+  private void cleanupExceptionQueuedEvents() {
+    final Iterator<ExceptionQueuedEvent> exceptionQueuedEvents = getUnhandledExceptionQueuedEvents().iterator();
+    while (exceptionQueuedEvents.hasNext()) {
+      exceptionQueuedEvents.next();
+      exceptionQueuedEvents.remove();
+    }
   }
+
 }
diff --git a/tobago-core/src/main/java/org/apache/myfaces/tobago/webapp/AjaxExceptionHandler.java b/tobago-core/src/main/java/org/apache/myfaces/tobago/webapp/AjaxExceptionHandler.java
deleted file mode 100644
index bf6f2fb..0000000
--- a/tobago-core/src/main/java/org/apache/myfaces/tobago/webapp/AjaxExceptionHandler.java
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * 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.myfaces.tobago.webapp;
-
-import org.apache.myfaces.tobago.util.WebXmlUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import javax.faces.FacesException;
-import javax.faces.application.ViewHandler;
-import javax.faces.component.UIViewRoot;
-import javax.faces.context.ExceptionHandler;
-import javax.faces.context.ExceptionHandlerWrapper;
-import javax.faces.context.FacesContext;
-import javax.faces.event.AbortProcessingException;
-import javax.faces.event.ExceptionQueuedEvent;
-import javax.faces.event.PhaseId;
-import javax.faces.event.PreRenderViewEvent;
-import javax.faces.view.ViewDeclarationLanguage;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import java.io.IOException;
-import java.lang.invoke.MethodHandles;
-import java.util.Iterator;
-
-public class AjaxExceptionHandler extends ExceptionHandlerWrapper {
-
-  private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
-
-  private ExceptionHandler wrapped;
-
-  AjaxExceptionHandler(final ExceptionHandler exception) {
-    this.wrapped = exception;
-  }
-
-  @Override
-  public ExceptionHandler getWrapped() {
-    return wrapped;
-  }
-
-  @Override
-  public void handle() throws FacesException {
-    final FacesContext facesContext = FacesContext.getCurrentInstance();
-
-    if (facesContext != null
-        && facesContext.getPartialViewContext().isAjaxRequest()
-        && getUnhandledExceptionQueuedEvents().iterator().hasNext()) {
-
-      final Throwable exception = getUnhandledExceptionQueuedEvents().iterator().next().getContext().getException();
-
-      if (!(exception instanceof AbortProcessingException)) {
-        final String errorPageLocation = WebXmlUtils.getErrorPageLocation(exception);
-
-        if (errorPageLocation != null
-            && (facesContext.getCurrentPhaseId() != PhaseId.RENDER_RESPONSE
-            || !facesContext.getExternalContext().isResponseCommitted())) {
-
-          try {
-            final HttpServletRequest request = (HttpServletRequest) facesContext.getExternalContext().getRequest();
-            final HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse();
-
-            request.setAttribute("javax.servlet.error.exception", exception);
-            request.setAttribute("javax.servlet.error.exception_type", exception.getClass());
-            request.setAttribute("javax.servlet.error.message", exception.getMessage());
-            request.setAttribute("javax.servlet.error.request_uri", request.getRequestURI());
-            request.setAttribute("javax.servlet.error.status_code", HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
-
-            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
-
-            renderErrorPage(facesContext, errorPageLocation);
-            cleanupExceptionQueuedEvents();
-          } catch (final IOException e) {
-            throw new FacesException(e);
-          }
-        } else {
-          LOG.debug("Can't return an error page. errorPageLocation='{}'", errorPageLocation);
-        }
-      }
-    }
-
-    getWrapped().handle();
-  }
-
-  private void renderErrorPage(final FacesContext facesContext, final String errorPageLocation) throws IOException {
-    final ViewHandler viewHandler = facesContext.getApplication().getViewHandler();
-    final UIViewRoot viewRoot = viewHandler.createView(facesContext, errorPageLocation);
-    facesContext.setViewRoot(viewRoot);
-    facesContext.getPartialViewContext().setRenderAll(true);
-
-    final ViewDeclarationLanguage viewDeclarationLanguage = viewHandler
-        .getViewDeclarationLanguage(facesContext, errorPageLocation);
-    viewDeclarationLanguage.buildView(facesContext, viewRoot);
-    facesContext.getApplication().publishEvent(facesContext, PreRenderViewEvent.class, viewRoot);
-    viewDeclarationLanguage.renderView(facesContext, viewRoot);
-
-    facesContext.responseComplete();
-  }
-
-  private void cleanupExceptionQueuedEvents() {
-    final Iterator<ExceptionQueuedEvent> exceptionQueuedEvents = getUnhandledExceptionQueuedEvents().iterator();
-    while (exceptionQueuedEvents.hasNext()) {
-      exceptionQueuedEvents.next();
-      exceptionQueuedEvents.remove();
-    }
-  }
-}
diff --git a/tobago-core/src/main/java/org/apache/myfaces/tobago/webapp/AjaxExceptionHandlerFactory.java b/tobago-core/src/main/java/org/apache/myfaces/tobago/webapp/AjaxExceptionHandlerFactory.java
deleted file mode 100644
index 27c50b7..0000000
--- a/tobago-core/src/main/java/org/apache/myfaces/tobago/webapp/AjaxExceptionHandlerFactory.java
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * 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.myfaces.tobago.webapp;
-
-import javax.faces.context.ExceptionHandler;
-import javax.faces.context.ExceptionHandlerFactory;
-
-public class AjaxExceptionHandlerFactory extends ExceptionHandlerFactory {
-
-  public AjaxExceptionHandlerFactory(final ExceptionHandlerFactory parent) {
-    super(parent);
-  }
-
-  @Override
-  public ExceptionHandler getExceptionHandler() {
-    return new AjaxExceptionHandler(getWrapped().getExceptionHandler());
-  }
-}
diff --git a/tobago-theme/tobago-theme-standard/src/main/js/tobago.js b/tobago-theme/tobago-theme-standard/src/main/js/tobago.js
index e393ace..c914e92 100644
--- a/tobago-theme/tobago-theme-standard/src/main/js/tobago.js
+++ b/tobago-theme/tobago-theme-standard/src/main/js/tobago.js
@@ -161,6 +161,9 @@
       // todo: may return NodeListOf<HTMLElementTagNameMap[K]> or something like that.
       static selfOrQuerySelectorAll(element, selectors) {
           const result = new Array();
+          if (!element) {
+              element = document.documentElement;
+          }
           if (element.matches(selectors)) {
               result.push(element);
           }
@@ -3261,6 +3264,17 @@
 
   function getContainingBlock(element) {
     var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;
+    var isIE = navigator.userAgent.indexOf('Trident') !== -1;
+
+    if (isIE && isHTMLElement(element)) {
+      // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
+      var elementCss = getComputedStyle$1(element);
+
+      if (elementCss.position === 'fixed') {
+        return null;
+      }
+    }
+
     var currentNode = getParentNode(element);
 
     while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {
@@ -10271,10 +10285,14 @@
               ReloadManager.instance.schedule(id, JSON.parse(result[1]).reload.frequency);
           }
           else {
+              let rootNode = this.getRootNode();
+              // XXX in case of "this" is tobago-page (e.g. ajax exception handling) rootNode is not set correctly???
+              if (!rootNode.getElementById) {
+                  rootNode = document;
+              }
               console.info("[tobago-jsf] Update after jsf.ajax success: %s", id);
               if (JsfParameter.isJsfId(id)) {
                   console.debug("[tobago-jsf] updating #%s", id);
-                  const rootNode = this.getRootNode();
                   const element = rootNode.getElementById(id);
                   if (element) {
                       Listener.executeAfterUpdate(element);
@@ -10286,7 +10304,6 @@
               else if (JsfParameter.isJsfBody(id)) {
                   console.debug("[tobago-jsf] updating body");
                   // there should be only one element with this tag name
-                  const rootNode = this.getRootNode();
                   Listener.executeAfterUpdate(rootNode.querySelector("tobago-page"));
               }
           }
@@ -11453,6 +11470,7 @@
           console.debug("constructor: '%s'", element.id);
           this.element.addEventListener("change", this.checkValue.bind(this));
       }
+      // todo: use "custom-elements" instead of this init listener
       static init(element) {
           for (const input of RegExpTest.selfOrElementsByClassName(element, "tobago-in")) { // todo only for data-regexp
               new RegExpTest(input);
@@ -11465,6 +11483,9 @@
        */
       static selfOrElementsByClassName(element, className) {
           const result = new Array();
+          if (!element) {
+              element = document.documentElement;
+          }
           if (element.classList.contains(className)) {
               result.push(element);
           }
diff --git a/tobago-theme/tobago-theme-standard/src/main/js/tobago.js.map b/tobago-theme/tobago-theme-standard/src/main/js/tobago.js.map
index af2bdfa..03aebdd 100644
--- a/tobago-theme/tobago-theme-standard/src/main/js/tobago.js.map
+++ b/tobago-theme/tobago-theme-standard/src/main/js/tobago.js.map
@@ -1 +1 @@
-{"version":3,"file":"tobago.js","sources":["../ts/tobago-listener.ts","../ts/tobago-utils.ts","../ts/tobago-bar.ts","../ts/tobago-dropdown.ts","../../../../node_modules/vanillajs-datepicker/js/lib/utils.js","../../../../node_modules/vanillajs-datepicker/js/lib/date.js","../../../../node_modules/vanillajs-datepicker/js/lib/date-format.js","../../../../node_modules/vanillajs-datepicker/js/lib/event.js","../../../../node_modules/vanillajs-datepicker/js/i18n/base-locales.js","../../../../nod [...]
\ No newline at end of file
+{"version":3,"file":"tobago.js","sources":["../ts/tobago-listener.ts","../ts/tobago-utils.ts","../ts/tobago-bar.ts","../ts/tobago-dropdown.ts","../../../../node_modules/vanillajs-datepicker/js/lib/utils.js","../../../../node_modules/vanillajs-datepicker/js/lib/date.js","../../../../node_modules/vanillajs-datepicker/js/lib/date-format.js","../../../../node_modules/vanillajs-datepicker/js/lib/event.js","../../../../node_modules/vanillajs-datepicker/js/i18n/base-locales.js","../../../../nod [...]
\ No newline at end of file
diff --git a/tobago-theme/tobago-theme-standard/src/main/js/tobago.min.js b/tobago-theme/tobago-theme-standard/src/main/js/tobago.min.js
index cbe0c70..db3b549 100644
--- a/tobago-theme/tobago-theme-standard/src/main/js/tobago.min.js
+++ b/tobago-theme/tobago-theme-standard/src/main/js/tobago.min.js
@@ -1,8 +1,8 @@
-!function(e){"function"==typeof define&&define.amd?define(e):e()}((function(){"use strict";var e,t;!function(e){e[e.DOCUMENT_READY=0]="DOCUMENT_READY",e[e.WINDOW_LOAD=1]="WINDOW_LOAD",e[e.BEFORE_SUBMIT=2]="BEFORE_SUBMIT",e[e.AFTER_UPDATE=3]="AFTER_UPDATE",e[e.BEFORE_UNLOAD=4]="BEFORE_UNLOAD",e[e.BEFORE_EXIT=5]="BEFORE_EXIT"}(e||(e={})),function(e){e[e.EARLIER=0]="EARLIER",e[e.EARLY=1]="EARLY",e[e.NORMAL=2]="NORMAL",e[e.LATE=3]="LATE",e[e.LATER=4]="LATER"}(t||(t={}));class s{constructor() [...]
+!function(e){"function"==typeof define&&define.amd?define(e):e()}((function(){"use strict";var e,t;!function(e){e[e.DOCUMENT_READY=0]="DOCUMENT_READY",e[e.WINDOW_LOAD=1]="WINDOW_LOAD",e[e.BEFORE_SUBMIT=2]="BEFORE_SUBMIT",e[e.AFTER_UPDATE=3]="AFTER_UPDATE",e[e.BEFORE_UNLOAD=4]="BEFORE_UNLOAD",e[e.BEFORE_EXIT=5]="BEFORE_EXIT"}(e||(e={})),function(e){e[e.EARLIER=0]="EARLIER",e[e.EARLY=1]="EARLY",e[e.NORMAL=2]="NORMAL",e[e.LATE=3]="LATE",e[e.LATER=4]="LATER"}(t||(t={}));class s{constructor() [...]
 /*!
     * Bootstrap v5.0.0-beta3 (https://getbootstrap.com/)
     * Copyright 2011-2021 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
     * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
     */
-const Es="transitionend",Ls=e=>{do{e+=Math.floor(1e6*Math.random())}while(document.getElementById(e));return e},Ss=e=>{let t=e.getAttribute("data-bs-target");if(!t||"#"===t){let s=e.getAttribute("href");if(!s||!s.includes("#")&&!s.startsWith("."))return null;s.includes("#")&&!s.startsWith("#")&&(s="#"+s.split("#")[1]),t=s&&"#"!==s?s.trim():null}return t},xs=e=>{const t=Ss(e);return t&&document.querySelector(t)?t:null},ks=e=>{const t=Ss(e);return t?document.querySelector(t):null},As=e=>{i [...]
+const Es="transitionend",Ls=e=>{do{e+=Math.floor(1e6*Math.random())}while(document.getElementById(e));return e},Ss=e=>{let t=e.getAttribute("data-bs-target");if(!t||"#"===t){let s=e.getAttribute("href");if(!s||!s.includes("#")&&!s.startsWith("."))return null;s.includes("#")&&!s.startsWith("#")&&(s="#"+s.split("#")[1]),t=s&&"#"!==s?s.trim():null}return t},xs=e=>{const t=Ss(e);return t&&document.querySelector(t)?t:null},ks=e=>{const t=Ss(e);return t?document.querySelector(t):null},As=e=>{i [...]
 //# sourceMappingURL=tobago.min.js.map
diff --git a/tobago-theme/tobago-theme-standard/src/main/js/tobago.min.js.map b/tobago-theme/tobago-theme-standard/src/main/js/tobago.min.js.map
index 5041948..bcd81df 100644
--- a/tobago-theme/tobago-theme-standard/src/main/js/tobago.min.js.map
+++ b/tobago-theme/tobago-theme-standard/src/main/js/tobago.min.js.map
@@ -1 +1 @@
-{"version":3,"file":"tobago.min.js","sources":["../ts/tobago-listener.ts","../ts/tobago-utils.ts","../ts/tobago-bar.ts","../ts/tobago-dropdown.ts","../../../../node_modules/vanillajs-datepicker/js/lib/utils.js","../../../../node_modules/vanillajs-datepicker/js/lib/date.js","../../../../node_modules/vanillajs-datepicker/js/lib/date-format.js","../../../../node_modules/vanillajs-datepicker/js/lib/event.js","../../../../node_modules/vanillajs-datepicker/js/i18n/base-locales.js","../../../.. [...]
\ No newline at end of file
+{"version":3,"file":"tobago.min.js","sources":["../ts/tobago-listener.ts","../ts/tobago-utils.ts","../ts/tobago-bar.ts","../ts/tobago-dropdown.ts","../../../../node_modules/vanillajs-datepicker/js/lib/utils.js","../../../../node_modules/vanillajs-datepicker/js/lib/date.js","../../../../node_modules/vanillajs-datepicker/js/lib/date-format.js","../../../../node_modules/vanillajs-datepicker/js/lib/event.js","../../../../node_modules/vanillajs-datepicker/js/i18n/base-locales.js","../../../.. [...]
\ No newline at end of file
diff --git a/tobago-theme/tobago-theme-standard/src/main/ts/tobago-in.ts b/tobago-theme/tobago-theme-standard/src/main/ts/tobago-in.ts
index 2752053..27895d6 100644
--- a/tobago-theme/tobago-theme-standard/src/main/ts/tobago-in.ts
+++ b/tobago-theme/tobago-theme-standard/src/main/ts/tobago-in.ts
@@ -50,6 +50,7 @@ class RegExpTest {
   private readonly element: HTMLInputElement;
   private readonly regexp: RegExp;
 
+  // todo: use "custom-elements" instead of this init listener
   static init(element: HTMLElement): void {
     for (const input of RegExpTest.selfOrElementsByClassName(element, "tobago-in")) { // todo only for data-regexp
       new RegExpTest(input as HTMLInputElement);
@@ -63,6 +64,9 @@ class RegExpTest {
    */
   static selfOrElementsByClassName(element: HTMLElement, className: string): Array<HTMLElement> {
     const result: Array<HTMLElement> = new Array<HTMLElement>();
+    if (!element) {
+      element = document.documentElement;
+    }
     if (element.classList.contains(className)) {
       result.push(element);
     }
diff --git a/tobago-theme/tobago-theme-standard/src/main/ts/tobago-page.ts b/tobago-theme/tobago-theme-standard/src/main/ts/tobago-page.ts
index 7fe77a0..ad2f41a 100644
--- a/tobago-theme/tobago-theme-standard/src/main/ts/tobago-page.ts
+++ b/tobago-theme/tobago-theme-standard/src/main/ts/tobago-page.ts
@@ -162,10 +162,14 @@ export class Page extends HTMLElement {
       console.debug("[tobago-jsf] Found reload-JSON in response!");
       ReloadManager.instance.schedule(id, JSON.parse(result[1]).reload.frequency);
     } else {
+      let rootNode = this.getRootNode() as ShadowRoot | Document;
+      // XXX in case of "this" is tobago-page (e.g. ajax exception handling) rootNode is not set correctly???
+      if (! rootNode.getElementById) {
+        rootNode = document;
+      }
       console.info("[tobago-jsf] Update after jsf.ajax success: %s", id);
       if (JsfParameter.isJsfId(id)) {
         console.debug("[tobago-jsf] updating #%s", id);
-        const rootNode = this.getRootNode() as ShadowRoot | Document;
         const element = rootNode.getElementById(id);
         if (element) {
           Listener.executeAfterUpdate(element);
@@ -175,7 +179,6 @@ export class Page extends HTMLElement {
       } else if (JsfParameter.isJsfBody(id)) {
         console.debug("[tobago-jsf] updating body");
         // there should be only one element with this tag name
-        const rootNode = this.getRootNode() as ShadowRoot | Document;
         Listener.executeAfterUpdate(rootNode.querySelector("tobago-page") as HTMLElement);
       }
     }
diff --git a/tobago-theme/tobago-theme-standard/src/main/ts/tobago-utils.ts b/tobago-theme/tobago-theme-standard/src/main/ts/tobago-utils.ts
index df8f09e..55c84e7 100644
--- a/tobago-theme/tobago-theme-standard/src/main/ts/tobago-utils.ts
+++ b/tobago-theme/tobago-theme-standard/src/main/ts/tobago-utils.ts
@@ -26,6 +26,9 @@ export class DomUtils {
   // todo: may return NodeListOf<HTMLElementTagNameMap[K]> or something like that.
   static selfOrQuerySelectorAll(element: HTMLElement, selectors: string): Array<HTMLElement> {
     const result: Array<HTMLElement> = new Array<HTMLElement>();
+    if (!element) {
+      element = document.documentElement;
+    }
     if (element.matches(selectors)) {
       result.push(element);
     }