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
{
				String newValue = UIUtil.convertToModelString( (String) value,
						false );
				if ( COLUMN_VALUE.equals( property ) )
				{
					String errorMessage = isValidValue( newValue );
					if ( errorMessage != null )
					{
						ExceptionHandler.openMessageBox( ERROR_TITLE_INVALID_INPUT,
								errorMessage,
								SWT.ICON_INFORMATION );
						return;
					}
					if ( choice.getLabel( ) == null
							&& containValue( choice,
									newValue,
									COLUMN_DISPLAY_TEXT ) )
					{
						ExceptionHandler.openMessageBox( ERROR_TITLE_INVALID_INPUT,
								ERROR_MSG_DUPLICATED_LABEL,
								SWT.ICON_INFORMATION );
						return;
					}