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.engine;
016    
017    import java.util.List;
018    
019    import org.apache.hivemind.impl.MessageFormatter;
020    import org.apache.tapestry.IComponent;
021    import org.apache.tapestry.IPage;
022    
023    /**
024     * @author Howard M. Lewis Ship
025     * @since 4.0
026     */
027    public final class EngineMessages
028    {
029        private static final MessageFormatter _formatter = new MessageFormatter(EngineMessages.class);
030    
031        /* defeat instantiation */
032        private EngineMessages() { }
033        
034        public static String serviceNoParameter(IEngineService service)
035        {
036            return _formatter.format("service-no-parameter", service.getName());
037        }
038    
039        public static String wrongComponentType(IComponent component, Class expectedType)
040        {
041            return _formatter.format("wrong-component-type", component.getExtendedId(), expectedType
042                    .getName());
043        }
044    
045        public static String requestStateSession(IComponent component)
046        {
047            return _formatter.format("request-stale-session", component.getExtendedId());
048        }
049    
050        public static String pageNotCompatible(IPage page, Class expectedType)
051        {
052            return _formatter.format("page-not-compatible", page.getPageName(), expectedType.getName());
053        }
054    
055        public static String noBrowserEvent()
056        {
057            return _formatter.format("missing-browser-event", new Object[]{});
058        }
059        
060        static String exceptionDuringCleanup(Throwable cause)
061        {
062            return _formatter.format("exception-during-cleanup", cause);
063        }
064    
065        static String validateCycle(List pageNames)
066        {
067            StringBuffer buffer = new StringBuffer();
068            int count = pageNames.size();
069    
070            for (int i = 0; i < count; i++)
071            {
072                if (i > 0)
073                    buffer.append("; ");
074    
075                buffer.append(pageNames.get(i));
076            }
077    
078            return _formatter.format("validate-cycle", buffer);
079        }
080    }