Bug 167210 No change in 'TOC Item Expression' after select a group row[0001]
Description: No change in 'TOC Item Expression' after select a group row[0001] Build number: 2.2.0.v20061208-1310 Steps to reproduce: 1, Drag a dataset into layout 2, Select the table and insert a group on it. 3, In New Group, select a row as group row 4, Check the 'TOC Item Expression' Expected result: The row["XXXX"] in 'TOC Item Expression' after selecting 'Group On' Actual result: There is still blank in 'TOC Item Expression' Error log:
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
WidgetUtil.createGridPlaceholder( pagebreakGroup, 1, true );
		
		new Label( pagebreakGroup, SWT.NONE ).setText( Messages.getString( "GroupDialog.PageBreakInside" ) ); 
		pagebreakInsideCombo = new Combo( pagebreakGroup, SWT.READ_ONLY
				| SWT.DROP_DOWN );
		for ( int i = 0; i < pagebreakInsideChoicesAll.length; i++ )
		{
			pagebreakInsideCombo.add( pagebreakInsideChoicesAll[i].getDisplayName( ) );
		}
		pagebreakInsideCombo.setData( pagebreakInsideChoicesAll );
		pagebreakInsideCombo.setLayoutData( new GridData(GridData.FILL_HORIZONTAL) );
		WidgetUtil.createGridPlaceholder( pagebreakGroup, 1, true );
		repeatHeaderButton = new Button( pagebreakGroup, SWT.CHECK );
		repeatHeaderButton.setText( Messages.getString( "GroupDialog.RepeatHeader" ) ); 
		GridData data = new GridData( );
		data.horizontalSpan = 3;
		repeatHeaderButton.setLayoutData( data );
	}
	/**
	 * Creates sorting and filter table area
	 * 
	 * @param parent
	 *            the parent composite
	 */
	private void createFilterSortingArea( Composite parent )
	{
		Group group = new Group( parent, SWT.NONE );
		group.setText( GROUP_DLG_GROUP_FILTER_SORTING );
		group.setLayout( new GridLayout( ) );
		group.setLayoutData( new GridData( 550, 250 ) );