org.directwebremoting.servlet.JavaScriptHandler Maven / Gradle / Ivy
package org.directwebremoting.servlet;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.directwebremoting.extend.Compressor;
import org.directwebremoting.util.MimeConstants;
/**
* Once we know a resource is JavaScript, we can go about compressing it.
* @author Joe Walker [joe at getahead dot ltd dot uk]
*/
public abstract class JavaScriptHandler extends TemplateHandler
{
/**
* Setup the {@link JavaScriptHandler} defaults
*/
public JavaScriptHandler()
{
setMimeType(MimeConstants.MIME_JS);
}
/* (non-Javadoc)
* @see org.directwebremoting.servlet.CachingHandler#generate(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
@Override
public String generateCachableContent(String contextPath, String servletPath, String pathInfo) throws IOException
{
String output = super.generateCachableContent(contextPath, servletPath, pathInfo);
if (debug || compressor == null)
{
return output;
}
try
{
return compressor.compressJavaScript(output);
}
catch (Exception ex)
{
log.warn("Compression system (" + compressor.getClass().getSimpleName() +") failed to compress script", ex);
return output;
}
}
/**
* Setter for the current JavaScript compression library
* @param compressor The new compression library
*/
public void setCompressor(Compressor compressor)
{
this.compressor = compressor;
}
/**
* In debug mode we don't do compression at all
* @param debug ...
*/
public void setDebug(boolean debug)
{
this.debug = debug;
}
/**
* Are we compressing the script?
*/
private Compressor compressor;
/**
* In debug mode, we skip script compression
*/
protected boolean debug = false;
/**
* The log stream
*/
private static final Log log = LogFactory.getLog(JavaScriptHandler.class);
}
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