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
015package org.apache.tapestry.script;
016
017import org.apache.tapestry.coerce.ValueConverter;
018import org.apache.tapestry.services.ExpressionEvaluator;
019import org.apache.tapestry.util.xml.BaseRule;
020import org.apache.tapestry.util.xml.RuleDirectedParser;
021import 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 */
029public 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}