/**
    * Copyright 2005-2016 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.krad.web.bind;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.CoreConstants;
  import org.kuali.rice.core.api.datetime.DateTimeService;
  import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;
  import org.kuali.rice.core.api.util.RiceKeyConstants;
  import org.kuali.rice.core.web.format.FormatException;
  
  import java.beans.PropertyEditorSupport;
  import java.io.Serializable;
  import java.sql.Time;
  import java.text.ParseException;
  
  /**
   * PropertyEditor converts between time display strings and {@code java.sql.Time} objects
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class UifTimeEditor extends PropertyEditorSupport implements Serializable {
  
      private static final long serialVersionUID = 3087028215717940843L;
  
      private transient DateTimeService dateTimeService;
  
      /**
       * Converts the time object to the display string format.
       *
       * @return the time object in the display string format or null if it is empty
       */
      @Override
      public String getAsText() {
          if (getValue() == null) {
              return null;
          }
  
          if (getValue() instanceof String && StringUtils.isBlank((String) getValue())) {
              return null;
          }
  
          return getDateTimeService().toTimeString((Time) getValue());
      }
  
      /**
       * Converts the display string to a time object.
       */
      @Override
      public void setAsText(String text) throws IllegalArgumentException {
          setValue(convertToObject(text));
      }
  
      /**
       * Converts the display text to a time object.
       *
       * @param text the display text
       *
       * @return the time object
       */
      protected Object convertToObject(String text) {
          if (StringUtils.isBlank(text)) {
              return null;
          }
  
          try {
              return getDateTimeService().convertToSqlTime(text);
          } catch (ParseException e) {
              throw new FormatException("parsing", RiceKeyConstants.ERROR_TIME, text, e);
          }
      }
  
      /**
       * Gets the date time service.
       *
       * @return the date time service
       */
      protected DateTimeService getDateTimeService() {
          if (dateTimeService == null) {
              dateTimeService = GlobalResourceLoader.getService(CoreConstants.Services.DATETIME_SERVICE);
          }
          return dateTimeService;
      }
  
  }