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 java.util.Map;
018    
019    import org.apache.hivemind.Location;
020    import org.apache.hivemind.Resource;
021    import org.apache.tapestry.IComponent;
022    import org.apache.tapestry.IRequestCycle;
023    import org.apache.tapestry.IScript;
024    import org.apache.tapestry.IScriptProcessor;
025    import org.apache.tapestry.coerce.ValueConverter;
026    import org.apache.tapestry.services.ExpressionEvaluator;
027    
028    /**
029     * A top level container for a number of {@link IScriptToken script tokens}.
030     * 
031     * @author Howard Lewis Ship
032     * @since 0.2.9
033     */
034    
035    public class ParsedScript extends AbstractToken implements IScript
036    {
037    
038        private Resource _scriptResource;
039    
040        private ExpressionEvaluator _evaluator;
041    
042        /** @since 4.0 */
043    
044        private ValueConverter _valueConverter;
045    
046        public ParsedScript(ExpressionEvaluator evaluator,
047                ValueConverter valueConverter, Location location)
048        {
049            super(location);
050    
051            _evaluator = evaluator;
052            _valueConverter = valueConverter;
053            _scriptResource = location.getResource();
054        }
055    
056        public Resource getScriptResource()
057        {
058            return _scriptResource;
059        }
060    
061        /**
062         * Creates the {@link ScriptSessionImpl}and invokes
063         * {@link org.apache.tapestry.script.AbstractToken#writeChildren(java.lang.StringBuffer, org.apache.tapestry.script.ScriptSession)}.
064         */
065        public void execute(IRequestCycle cycle, IScriptProcessor processor, Map symbols)
066        {
067            ScriptSession session = new ScriptSessionImpl(_scriptResource, cycle,
068                    processor, _evaluator, _valueConverter, symbols);
069    
070            writeChildren(null, session);
071        }
072        
073        /**
074         * {@inheritDoc}
075         */
076        public void execute(IComponent target, IRequestCycle cycle, IScriptProcessor processor,
077                Map symbols)
078        {
079            ScriptSession session = new ScriptSessionImpl(_scriptResource, target, cycle,
080                    processor, _evaluator, _valueConverter, symbols);
081    
082            writeChildren(null, session);
083        }
084        
085        /**
086         * Does nothing; never invoked.
087         */
088        public void write(StringBuffer buffer, ScriptSession session)
089        {
090    
091        }
092    
093    }