Bug 180089 BIRT model - TOC predefined styles
In ROM we need to support predefined styles for TOC too. This will allow user to easily create a TOC style, by creating one of two styles. Suggestion i have is - TOC ( Applies to all TOC nodes ) - TOC-level1 ( If defined applies to first level toc nodes ) - TOC-level2 ........... - TOC-level5
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
* @see org.eclipse.birt.report.model.elements.ElementVisitor#visitSimpleDataSet(org.eclipse.birt.report.model.elements.SimpleDataSet)
	 */
	public void visitDataSet( DataSet obj )
	{
		super.visitDataSet( obj );
		writeStructureList( obj, IDataSetModel.RESULT_SET_HINTS_PROP );
		writeStructureList( obj, IDataSetModel.COMPUTED_COLUMNS_PROP );
		writeStructureList( obj, IDataSetModel.COLUMN_HINTS_PROP );
		writeStructureList( obj, IDataSetModel.FILTER_PROP );
		CachedMetaData metadata = (CachedMetaData) obj.getLocalProperty(
				getModule( ), IDataSetModel.CACHED_METADATA_PROP );
		if ( metadata != null )
		{
			
			writer.startElement( DesignSchemaConstants.STRUCTURE_TAG );
			writer.attribute( IDesignElementModel.NAME_PROP,
					IDataSetModel.CACHED_METADATA_PROP );
			writeStructureList( metadata, CachedMetaData.PARAMETERS_MEMBER );
			writeStructureList( metadata, CachedMetaData.RESULT_SET_MEMBER );
			writer.endElement( );
			
		}
		property( obj, IDataSetModel.ROW_FETCH_LIMIT_PROP );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitSimpleDataSet(org.eclipse.birt.report.model.elements.SimpleDataSet)
	 */
	public void visitSimpleDataSet( SimpleDataSet obj )