content: /*
   *  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.causeway.viewer.wicket.ui.errors;
  
  import org.apache.wicket.Component;
  import org.apache.wicket.ajax.AbstractDefaultAjaxBehavior;
  import org.apache.wicket.ajax.AjaxRequestTarget;
  import org.apache.wicket.markup.head.IHeaderResponse;
  import org.apache.wicket.markup.head.JavaScriptHeaderItem;
  import org.apache.wicket.markup.head.OnDomReadyHeaderItem;
  import org.apache.wicket.request.resource.JavaScriptResourceReference;
  
  import org.apache.causeway.applib.exceptions.RecoverableException;
  import org.apache.causeway.commons.internal.base._Strings;
  import org.apache.causeway.core.metamodel.context.HasMetaModelContext;
  import org.apache.causeway.core.metamodel.services.message.MessageBroker;
  
  /**
   * Attach to any Ajax button that might trigger a notification (ie calls
   * {@link MessageBroker#addMessage(String)}, {@link MessageBroker#addWarning(String)},
   * {@link MessageBroker#setApplicationError(String)} or throws an {@link RecoverableException}).
   *
   * <p>
   * Attach using the standard Wicket code:
   * <pre>
   * Button editButton = new AjaxButton(ID_EDIT_BUTTON, Model.of("Edit")) { ... }
   * editButton.add(new JGrowlBehaviour());
   * </pre>
   */
  public class JGrowlBehaviour
  extends AbstractDefaultAjaxBehavior
  implements HasMetaModelContext {
  
      private static final long serialVersionUID = 1L;
  
      @Override
      protected void respond(final AjaxRequestTarget target) {
  
          var configuration = getMetaModelContext().getConfiguration();
          getMessageBroker().ifPresent(messageBroker->{
              String feedbackMsg = JGrowlUtil.asJGrowlCalls(messageBroker, configuration);
              if(!_Strings.isNullOrEmpty(feedbackMsg)) {
                  target.appendJavaScript(feedbackMsg);
              }
          });
      }
  
      @Override
      public void renderHead(final Component component, final IHeaderResponse response) {
          super.renderHead(component, response);
  
          renderFeedbackMessages(response);
      }
  
      public void renderFeedbackMessages(final IHeaderResponse response) {
          response.render(
                  JavaScriptHeaderItem
                  .forReference(new JavaScriptResourceReference(JGrowlBehaviour.class, "js/causeway-bootstrap-growl.js")));
  
          var configuration = getMetaModelContext().getConfiguration();
          getMessageBroker().ifPresent(messageBroker->{
  
              String feedbackMsg = JGrowlUtil.asJGrowlCalls(messageBroker, configuration);
              if(_Strings.isNotEmpty(feedbackMsg)) {
                  response.render(OnDomReadyHeaderItem.forScript(feedbackMsg));
              }
  
          });
      }
  }
  