001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.script;
016    
017    import org.apache.tapestry.coerce.ValueConverter;
018    import org.apache.tapestry.services.ExpressionEvaluator;
019    import org.apache.tapestry.util.xml.BaseRule;
020    import org.apache.tapestry.util.xml.RuleDirectedParser;
021    import org.xml.sax.Attributes;
022    
023    /**
024     * Rule for <script> element. Creates a {@link org.apache.tapestry.script.ParsedScript}.
025     * 
026     * @author Howard Lewis Ship
027     * @since 3.0
028     */
029    public class ScriptRule extends BaseRule
030    {
031        /** @since 4.0 */
032        private ExpressionEvaluator _evaluator;
033    
034        /** @since 4.0 */
035        private ValueConverter _valueConverter;
036    
037        public ScriptRule(ExpressionEvaluator evaluator, ValueConverter valueConverter)
038        {
039            _evaluator = evaluator;
040            _valueConverter = valueConverter;
041        }
042    
043        public void endElement(RuleDirectedParser parser)
044        {
045            parser.pop();
046        }
047    
048        public void startElement(RuleDirectedParser parser, Attributes attributes)
049        {
050            ParsedScript script = new ParsedScript(_evaluator, _valueConverter, parser.getLocation());
051    
052            parser.push(script);
053        }
054    
055    }