// Copyright 2008-2013 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.components;
import org.apache.tapestry5.annotations.Import;
import org.apache.tapestry5.annotations.Parameter;
import org.apache.tapestry5.annotations.Property;
import org.apache.tapestry5.ioc.annotations.Inject;
import org.apache.tapestry5.ioc.annotations.Primary;
import org.apache.tapestry5.ioc.services.ExceptionAnalysis;
import org.apache.tapestry5.ioc.services.ExceptionAnalyzer;
import org.apache.tapestry5.ioc.services.ExceptionInfo;
import org.apache.tapestry5.services.StackTraceElementAnalyzer;
import org.apache.tapestry5.services.StackTraceElementClassConstants;
import java.util.List;
/**
* Integral part of the default {@link org.apache.tapestry5.corelib.pages.ExceptionReport} page used to break apart and
* display the properties of the exception.
*
* @tapestrydoc
* @see org.apache.tapestry5.ioc.services.ExceptionAnalyzer
*/
@Import(stylesheet = "ExceptionDisplay.css", module = "t5/core/exception-display")
public class ExceptionDisplay
{
/**
* Exception to report.
*/
@Parameter(required = true, allowNull = false)
private Throwable exception;
@Inject
private ExceptionAnalyzer analyzer;
@Property
private ExceptionInfo info;
@Property
private String propertyName;
@Property
private StackTraceElement frame;
@Property
private List<ExceptionInfo> stack;
private boolean sawDoFilter;
@Inject
@Primary
private StackTraceElementAnalyzer frameAnalyzer;
void setupRender()
{
ExceptionAnalysis analysis = analyzer.analyze(exception);
stack = analysis.getExceptionInfos();
}
public Object getPropertyValue()
{
return info.getProperty(propertyName);
}
public String getFrameClass()
{
if (sawDoFilter)
{
return StackTraceElementClassConstants.OMITTED;
}
String result = frameAnalyzer.classForFrame(frame);
sawDoFilter |= frame.getMethodName().equals("doFilter");
return result;
}
public Object getLineNumberForFrame()
{
if (frame.getLineNumber() < 1)
{
return "";
}
return frame.getLineNumber();
}
public String getFramePackageName()
{
return splitClass()[0];
}
public String getFrameClassName()
{
return splitClass()[1];
}
private String[] splitClass()
{
String name = frame.getClassName();
int dotx = name.lastIndexOf('.');
// For generated classes in root package:
if (dotx < 0)
{
return new String[]{"", name};
}
// For normal classes:
return new String[]{
name.substring(0, dotx),
name.substring(dotx)
};
}
}