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/CascadingParametersDialog.java
data = new GridData( GridData.FILL_HORIZONTAL );
		data.verticalSpan = 2;
		formatArea.setLayoutData( data );
		formatField = new Text( formatArea, SWT.BORDER
				| SWT.SINGLE
				| SWT.READ_ONLY );
		formatField.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		changeFormat = new Button( formatArea, SWT.PUSH );
		changeFormat.setText( LABEL_CHANGE_FORMAT_BUTTON );
		setButtonLayoutData( changeFormat );
		changeFormat.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				popupFormatBuilder( true );
			}
		} );
		Group preview = new Group( formatArea, SWT.NULL );
		preview.setText( LABEL_PREVIEW_WITH_FORMAT );
		data = new GridData( GridData.FILL_HORIZONTAL );
		preview.setLayoutData( data );
		preview.setLayout( new GridLayout( ) );
		previewLable = new Label( preview, SWT.CENTER
				| SWT.HORIZONTAL
				| SWT.VIRTUAL );
		previewLable.setText( "" ); 
		previewLable.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		createLabel( optionsGroup, LABEL_LIST_LIMIT );
		Composite limitArea = new Composite( optionsGroup, SWT.NULL );
		layout = new GridLayout( 2, false );
		layout.marginWidth = 0;