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/api/ReportDesignHandle.java
* @return <code>true</code> can be added.else return <code>false</code>
	 */
	public boolean canAddCssStyleSheet( String fileName )
	{
		CssStyleSheetHandleAdapter adapter = new CssStyleSheetHandleAdapter(
				module, getElement( ) );
		return adapter.canAddCssStyleSheet( fileName );
	}
	/**
	 * Reloads the css with the given css file path. If the css already is
	 * included directly, reload it. If the css is not included, exception will
	 * be thrown.
	 * 
	 * @param sheetHandle
	 *            css style sheet handle.
	 * @throws SemanticException
	 *             if error is encountered when handling
	 *             <code>CssStyleSheet</code> structure list. Or it maybe
	 *             because that the given css is not found in the design. Or
	 *             that the css has descedents in the current module
	 */
	public void reloadCss( CssStyleSheetHandle sheetHandle )
			throws SemanticException
	{
		CssStyleSheetHandleAdapter adapter = new CssStyleSheetHandleAdapter(
				module, getElement( ) );
		adapter.reloadCss( sheetHandle );
	}
}