/*
    * 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.convert;
  
  import org.apache.myfaces.tobago.internal.util.StringUtils;
  import org.apache.myfaces.tobago.layout.Measure;
  
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  import javax.faces.convert.Converter;
  import javax.faces.convert.ConverterException;
  
  /**
   * JSF converter for the org.apache.myfaces.tobago.layout.Measure class.
   */
  @org.apache.myfaces.tobago.apt.annotation.Converter(forClass = "org.apache.myfaces.tobago.layout.Measure")
  public class MeasureConverter implements Converter<Measure> {
  
    @Override
    public Measure getAsObject(final FacesContext facesContext, final UIComponent component, final String string)
        throws ConverterException {
      if (StringUtils.isBlank(string)) {
        return null;
      } else {
        return Measure.valueOf(string);
      }
    }
  
    @Override
    public String getAsString(final FacesContext facesContext, final UIComponent component, final Measure measure)
        throws ConverterException {
      if (measure == null) {
        return null;
      }
      try {
        return measure.serialize();
      } catch (final ClassCastException e) {
        throw new ConverterException("object='" + measure + "'", e);
      }
    }
  }