// Copyright 2006, 2007, 2008, 2009 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.tapestry5.corelib.pages;

 import org.apache.tapestry5.SymbolConstants;

 import org.apache.tapestry5.annotations.ContentType;

 import org.apache.tapestry5.annotations.Property;

 import org.apache.tapestry5.ioc.annotations.Inject;

 import org.apache.tapestry5.ioc.annotations.Symbol;

 import org.apache.tapestry5.ioc.internal.util.InternalUtils;

 import org.apache.tapestry5.services.ExceptionReporter;

 import org.apache.tapestry5.services.Request;

 import org.apache.tapestry5.services.Session;

 import java.util.List;

 import java.util.regex.Pattern;

 /**

  * Responsible for reporting runtime exceptions. This page is quite verbose and is usually overridden in a production

  * application. When {@link org.apache.tapestry5.SymbolConstants#PRODUCTION_MODE} is "true", it is very abbreviated.

  *

  * @see org.apache.tapestry5.corelib.components.ExceptionDisplay

  */

 @ContentType("text/html")

 public class ExceptionReport implements ExceptionReporter

 {

     private static final String PATH_SEPARATOR_PROPERTY = "path.separator";

     // Match anything ending in .(something?)path.

     private static final Pattern PATH_RECOGNIZER = Pattern.compile("\\..*path$");

     @Property

     private String attributeName;

     @Inject

     @Property

     private Request request;

     @Inject

     @Symbol(SymbolConstants.PRODUCTION_MODE)

     @Property(write = false)

     private boolean productionMode;

     @Inject

     @Symbol(SymbolConstants.TAPESTRY_VERSION)

     @Property(write = false)

     private String tapestryVersion;

     @Inject

     @Symbol(SymbolConstants.APPLICATION_VERSION)

     @Property(write = false)

     private String applicationVersion;

     @Property(write = false)

     private Throwable rootException;

     @Property

     private String propertyName;

     private final String pathSeparator = System.getProperty(PATH_SEPARATOR_PROPERTY);

     public void reportException(Throwable exception)

     {

         rootException = exception;

     }

     public boolean getHasSession()

     {

         return request.getSession(false) != null;

     }

     public Session getSession()

     {

         return request.getSession(false);

     }

     public Object getAttributeValue()

     {

         return getSession().getAttribute(attributeName);

     }

     /**

      * Returns a <em>sorted</em> list of system property names.

      */

     public List<String> getSystemProperties()

     {

         return InternalUtils.sortedKeys(System.getProperties());

     }

     public String getPropertyValue()

     {

         return System.getProperty(propertyName);

     }

     public boolean isComplexProperty()

     {

         return PATH_RECOGNIZER.matcher(propertyName).find() && getPropertyValue().contains(pathSeparator);

     }

     public String[] getComplexPropertyValue()

     {

         // Neither : nor ; is a regexp character.

         return getPropertyValue().split(pathSeparator);

     }

 }