Bug 113938 Report is marked dirty when open/close cascading parameter dialog without doing any operation on it
description: Report is marked dirty when open/close cascading parameter dialog without doing any operation on it steps to reproduce: 1.new a cascading parameter group 2.save the reprot 3.double click the cascading parameter to bring out edit box 4.click OK to close edit box actual result: Report has been marked dirty expected result: No dirty marked for that no operations done in edit parameter dialog
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ExpressionProvider.java
addFilter( (ExpressionFilter) obj );
			}
		}
	}
	/**
	 * Removes a filter from the filter list.
	 * 
	 * @param filter
	 *            the filter to remove
	 */
	public void removeFilter( ExpressionFilter filter )
	{
		if ( filterList == null )
		{
			return;
		}
		filterList.remove( filter );
	}
	/**
	 * Clears the filter list.
	 */
	public void clearFilters( )
	{
		if ( filterList == null )
		{
			return;
		}
		filterList.clear( );
	}
}