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
previewArea.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		previewArea.setLayout( UIUtil.createGridLayoutWithoutMargin( ) );
		previewArea.setText( LABEL_PREVIEW );
		previewLabel = new Label( previewArea, SWT.NONE );
		previewLabel.setAlignment( SWT.CENTER );
		previewLabel.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		
		createLabel( moreOptionSection,
				Messages.getString( "CascadingParametersDialog.label.listLimit" ) ); 
		Composite limitArea = new Composite( moreOptionSection, SWT.NULL );
		GridLayout layout = new GridLayout( 2, false );
		layout.marginWidth = 0;
		layout.marginHeight = 0;
		limitArea.setLayout( layout );
		GridData data = new GridData( GridData.FILL_HORIZONTAL );
		data.verticalSpan = 1;
		limitArea.setLayoutData( data );
		listLimit = new Text( limitArea, SWT.BORDER );
		listLimit.setLayoutData( new GridData( ) );
		listLimit.addVerifyListener( new VerifyListener( ) {
			public void verifyText( VerifyEvent e )
			{
				e.doit = ( "1234567890\0".indexOf( e.character ) != -1 ); 
			}
		} );
		Label values = new Label( limitArea, SWT.NULL );
		values.setText( Messages.getString( "CascadingParametersDialog.label.values" ) ); 
		values.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		
		createLabel( moreOptionSection, null );