/*
 * Copyright 2004-2005 Revolution Systems Inc.
 *
 * Licensed 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 com.revolsys.ui.html.fields;

import org.springframework.expression.ParseException;
import org.springframework.expression.spel.standard.SpelExpressionParser;

import com.revolsys.util.Property;

public class SpelExpressionField extends TextField {
  private static final SpelExpressionParser PARSER = new SpelExpressionParser();

  public SpelExpressionField() {
    setSize(70);
    setMaxLength(4000);
  }

  public SpelExpressionField(final String name, final boolean required) {
    super(name, required);
    setSize(70);
    setMaxLength(4000);
  }

  @Override
  public void setTextValue(final String value) {
    super.setTextValue(value);
    if (Property.hasValue(value)) {
      try {
        PARSER.parseExpression(value);
      } catch (final ParseException e) {
        throw new IllegalArgumentException(e.getMessage());
      }
    } else {
      super.setValue(null);
    }
  }
}