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
table.setHeaderVisible( true );
		String[] columns;
		int[] columnWidth;
		columns = new String[]{
				null, COLUMN_IS_DEFAULT, COLUMN_VALUE, COLUMN_DISPLAY_TEXT
		};
		columnWidth = new int[]{
				20, 70, 145, 145,
		};
		for ( int i = 0; i < columns.length; i++ )
		{
			TableColumn column = new TableColumn( table, SWT.LEFT );
			column.setResizable( columns[i] != null );
			if ( columns[i] != null )
			{
				column.setText( columns[i] );
			}
			column.setWidth( columnWidth[i] );
		}
		valueTable = tableArea.getTableViewer( );
		valueTable.setColumnProperties( columns );
		valueTable.setContentProvider( contentProvider );
		valueTable.setLabelProvider( labelProvider );
		tableArea.setInput( choiceList );
		valueTable.addSelectionChangedListener( new ISelectionChangedListener( ) {
			public void selectionChanged( SelectionChangedEvent event )
			{
				updateTableButtons( );
			}
		} );