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/ui/dialogs/ParameterDialog.java
defaultValueChooser.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				switch ( defaultValueChooser.getSelectionIndex( ) )
				{
					case 0 :
						defaultValue = null;
						break;
					case 1 :
						defaultValue = Boolean.toString( true );
						break;
					case 2 :
						defaultValue = Boolean.toString( false );
						break;
				}
			}
		} );
	}
	private void switchToList( )
	{
		createLabel( valueArea, LABEL_VALUES );
		Composite tableAreaComposite = new Composite( valueArea, SWT.NONE );
		tableAreaComposite.setLayout( UIUtil.createGridLayoutWithoutMargin( ) );
		tableAreaComposite.setLayoutData( new GridData( GridData.FILL_BOTH ) );
		TableArea tableArea = new TableArea( tableAreaComposite, SWT.SINGLE
				| SWT.FULL_SELECTION
				| SWT.BORDER, tableAreaModifier );
		tableArea.setLayoutData( new GridData( GridData.FILL_BOTH ) );
		Table table = tableArea.getTable( );
		table.setLinesVisible( true );