    001    // Copyright 2009 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.tapestry5.internal.services;
    016
    017    import org.apache.tapestry5.services.StackTraceElementAnalyzer;
    018
    019    /**
    020     * Checks to see if a class has a given prefix to its class name.
    021     *
    022     * @since 5.1.0.0
    023     */
    024    public class PrefixCheckStackTraceElementAnalyzer implements StackTraceElementAnalyzer
    025    {
    026        private final String cssClass;
    027        private final String prefix;
    028
    029        public PrefixCheckStackTraceElementAnalyzer(String cssClass, String prefix)
    030        {
    031            this.prefix = prefix;
    032            this.cssClass = cssClass;
    033        }
    034
    035        public String classForFrame(StackTraceElement frame)
    036        {
    037            return frame.getClassName().startsWith(prefix)
    038                   ? cssClass
    039                   : null;
    040        }
    041    }