Bug 209309 Show javascript errorposition
If a javascript expression has errors, the error message is shown in the last lines in the preview tab. But there is no info where the error occurs. In most cases you had to guess the error location. It would be very helpfull to display the error location.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ExecutionContext.java
/**
	 * Remove a page break listener.
	 * 
	 * @param listener
	 *            the page break listener.
	 */
	public void removePageBreakListener( IPageBreakListener listener )
	{
		if ( pageBreakListeners != null )
		{
			pageBreakListeners.remove( listener );
		}
	}
	
	public IEngineTask getEngineTask()
	{
		return task;
	}
	
	public Logger getLogger( )
	{
		return log;
	}
	
	public void setLogger( Logger logger )
	{
		log = logger;
	}
}