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.app.registry;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import java.util.stream.Stream;
  
  import org.apache.causeway.viewer.wicket.ui.ComponentFactory;
  
  public record ComponentFactoryList(
          List<ComponentFactory> componentFactories) implements Iterable<ComponentFactory> {
  
      public ComponentFactoryList() {
          this(new ArrayList<>());
      }
  
      public void add(final ComponentFactory componentFactory) {
          if(componentFactories.contains(componentFactory)) return;
  
          componentFactories.add(componentFactory);
      }
  
      @Override
      public Iterator<ComponentFactory> iterator() {
          return componentFactories.iterator();
      }
  
      public Stream<ComponentFactory> stream() {
          return componentFactories.stream();
      }
  
      public <T extends ComponentFactory> Stream<T> stream(final Class<T> requiredClass) {
          return stream()
                  .filter(requiredClass::isInstance)
                  .map(requiredClass::cast);
      }
  }