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.components.text;
  
  import java.util.Optional;
  
  import org.apache.wicket.markup.html.form.TextField;
  import org.apache.wicket.model.IModel;
  import org.apache.wicket.util.convert.IConverter;
  import org.apache.wicket.validation.IValidationError;
  
  import org.jspecify.annotations.Nullable;
  
  import org.apache.causeway.viewer.wicket.ui.util.Wkt;
  
  import org.jspecify.annotations.NonNull;
  
  /**
   * Also properly handles absence of a {@link IConverter}.
   */
  public class TextFieldWithConverter<T> extends TextField<T> {
  
      private static final long serialVersionUID = 1L;
  
      private final @Nullable IConverter<T> converter;
  
      public TextFieldWithConverter(
              final @NonNull String id,
              final @NonNull IModel<T> model,
              final @NonNull Class<T> type,
              final @NonNull Optional<IConverter<T>> converter) {
          super(id, model, type);
          this.converter = converter.orElse(null);
      }
  
      @SuppressWarnings("unchecked")
      @Override
      public final <C> IConverter<C> getConverter(final Class<C> cType) {
          return converter!=null
                  && getType().isAssignableFrom(cType)
                  ? (IConverter<C>) converter
                  : super.getConverter(cType);
      }
  
      @Override
      public final void error(final IValidationError error) {
          if(!Wkt.errorMessageIgnoringResourceBundles(this, error)) {
              super.error(error); // fallback to original behavior
          }
      }
  
      @Override
      public boolean checkRequired() {
          return super.checkRequired();
      }
  
  }
  