Bug 155943 "Restore Properties" is always enabled for extended chart
Steps to reproduce: 1.New a report, includes a library, extends lib.chart 2.Choose the chart Expected result: "Restore Properties" is disabled untill set/change any local properties for the chart Actual result: "Restore Properties" is always enabled
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
}
	/**
	 * Writes the style and style properties for styled element.
	 * 
	 * @param obj
	 *            the styled element
	 */
	private void writeStyle( StyledElement obj )
	{
		property( obj, ReportItem.STYLE_PROP );
		writeStyleProps( obj );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitListing(org.eclipse.birt.report.model.elements.ListingElement)
	 */
	public void visitListing( ListingElement obj )
	{
		super.visitListing( obj );
		property( obj, ListingElement.REPEAT_HEADER_PROP );
		property( obj, ListingElement.PAGE_BREAK_INTERVAL_PROP );
		writeStructureList( obj, ListingElement.SORT_PROP );
		writeStructureList( obj, ListingElement.FILTER_PROP );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitGroup(org.eclipse.birt.report.model.elements.GroupElement)
	 */