    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
    015package org.apache.tapestry5.internal.services;
    016
    017import 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 */
    024public 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}