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/ParameterDialog.java
&& SessionHandleAdapter.getInstance( )
						.getReportDesignHandle( )
						.findParameter( name ) != null )
		{
			return ERROR_MSG_DUPLICATED_NAME;
		}
		return null;
	}
	private void refreshValueTable( )
	{
		if ( valueTable != null && !valueTable.getTable( ).isDisposed( ) )
		{
			valueTable.refresh( );
			updateTableButtons( );
		}
	}
	private void deleteRow( )
	{
		int index = valueTable.getTable( ).getSelectionIndex( );
		SelectionChoice choice = (SelectionChoice) ( (IStructuredSelection) valueTable.getSelection( ) ).getFirstElement( );
		if ( isDefaultChoice( choice ) )
		{
			defaultValue = null;
		}
		choiceList.remove( choice );
		valueTable.refresh( );
		index--;
		if ( index < 0 && valueTable.getTable( ).getItemCount( ) > 1 )
		{
			index = 0;