Bug 143671 [Linux-As][Smoke]Parameter can't be used.
Details: [Linux-As]Parameter can't be used. Setp: 1.New a report design. 2.New a paremeter. 3.Preview and click Run Report Parameter. 4.Dialog pop up and press OK. Actual resutl: Report error.
UI/org.eclipse.birt.report.designer.ui.preview/src/org/eclipse/birt/report/designer/ui/preview/editors/ReportPreviewFormPage.java
*/
	public boolean onBroughtToTop( IReportEditorPage prePage )
	{
		boolean isDisplay = false;
		if ( getEditorInput( ) != prePage.getEditorInput( ) )
		{
			setInput( prePage.getEditorInput( ) );
		}
		if ( prePage.isDirty( ) )
		{
			prePage.doSave( null );
		}
		
		if ( isMissingParameter( ) )
		{
			if ( parameterDialog != null )
			{
				parameterDialog.open( );
				
				
				if ( parameterDialog.getReturnCode( ) == InputParameterHtmlDialog.RETURN_CODE_BROWSER_CLOSED )
				{
					isDisplay = true;
					
					
					if ( isMissingParameter( ) )
					{
						editor.setActivePage( prePage.getId( ) );
						return false;
					}