Bug 168808 Display text is lost after launching import values dialog
Steps to reproduce: 1.new a parameter; 2.select list box control type; 3.press "Import Values" button to import some values; 4.assign display texts for the imported values; 5.press "Import Values" button to launch import values dialog again; 6.press ok button on dialog; Expected result: The previous assigned display texts are remained. Actual result: The previous display texts are lost.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/ImportValueDialog.java
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Text;
import com.ibm.icu.util.ULocale;
/**
 * The dialog used to import values from data sets
 * <dt><b>Styles: (Defined in DesingChoicesConstants) </b></dt>
 * <dd>PARAM_TYPE_STRING</dd>
 * <dd>PARAM_TYPE_FLOAT</dd>
 * <dd>PARAM_TYPE_DECIMAL</dd>
 * <dd>PARAM_TYPE_DATETIME</dd>
 * <dd>PARAM_TYPE_BOOLEAN</dd>
 */
public class ImportValueDialog extends BaseDialog
{
	private static final IChoiceSet DATA_TYPE_CHOICE_SET = DEUtil.getMetaDataDictionary( )
			.getElement( ReportDesignConstants.SCALAR_PARAMETER_ELEMENT )
			.getProperty( ScalarParameterHandle.DATA_TYPE_PROP )
			.getAllowedChoices( );
	private static final String DLG_TITLE = Messages.getString( "ImportValueDialog.Title" ); 
	private static final String LABEL_SELECT_DATASET = Messages.getString( "ImportValueDialog.Label.SelectDataSet" ); 
	private static final String LABEL_SELECT_COLUMN = Messages.getString( "ImportValueDialog.Label.SelectColumn" ); 
	private static final String LABEL_SELECT_VALUE = Messages.getString( "ImportValueDialog.Label.SelectValue" ); 
	private static final String DATE_TIME_PATTERN = "MM/dd/yyyy hh:mm:ss a"; 
	private Combo dataSetChooser, columnChooser;
	private Text valueEditor;