org.apache.commons.jelly.impl.CompositeTextScriptBlock Maven / Gradle / Ivy

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Jelly is a Java and XML based scripting engine. Jelly combines the best ideas from JSTL, Velocity, DVSL, Ant and Cocoon all together in a simple yet powerful scripting engine.

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/*
 * Copyright 2002,2004 The Apache Software Foundation.
 *
 * 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 org.apache.commons.jelly.impl;

import java.util.List;

import org.apache.commons.jelly.Script;


/**
 * CompositeTextScriptBlock represents a text body of a
 * a tag which contains expressions, so that whitespace trimming
 * can be handled differently.
 *
 * @author James Strachan
 * @version $Revision: 155420 $
 */
public class CompositeTextScriptBlock extends ScriptBlock {

    /**
     * Create an instance.
     */
    public CompositeTextScriptBlock() {
    }
    
    
    /**
     * Trim the body of the script.
     * In this case, trim the whitespace from the start of the first element
     * and from the end of the last element.
     */
    public void trimWhitespace() {
        List list = getScriptList();
        int size = list.size();
        if ( size > 0 ) {
            Script script = (Script) list.get(0);
            if ( script instanceof TextScript ) {
                TextScript textScript = (TextScript) script;
                textScript.trimWhitespace();
            }
            if ( size > 1 ) {
                script = (Script) list.get(size - 1);
                if ( script instanceof TextScript ) {
                    TextScript textScript = (TextScript) script;
                    textScript.trimWhitespace();
                }
            }
        }
    }


}