Bug 145992 [regression] drill through to report document with toc in target does not work properly
steps to reproduce: - create 1st report - add a report element with toc entry - preview in viewer - create 2nd report - add a drill through link to the report document expected behavior: - drill through can be added actual behavior: - when select toc in target, exception was thrown out
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/HyperlinkBuilder.java
private Button htmlButton;
	private Button pdfButton;
	private Combo anchorChooser;
	private Group targetGroup;
	public HyperlinkBuilder( Shell parentShell )
	{
		super( parentShell, TITLE );
	}
	public HyperlinkBuilder( )
	{
		this( UIUtil.getDefaultShell( ) );
	}
	protected Control createDialogArea( Composite parent )
	{
		Composite composite = (Composite) super.createDialogArea( parent );
		createSelectionArea( composite );
		new Label( composite, SWT.SEPARATOR | SWT.HORIZONTAL ).setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		displayArea = new Composite( composite, SWT.NONE );
		Shell shell = PlatformUI.getWorkbench( )
				.getActiveWorkbenchWindow( )
				.getShell( );
		displayArea.setLayoutData( new GridData( 500,
				shell.getBounds( ).height < 490 + 200 ? shell.getBounds( ).height - 200
						: 490 ) );
		displayArea.setLayout( new GridLayout( 3, false ) );
		new Label( composite, SWT.SEPARATOR | SWT.HORIZONTAL ).setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		
		UIUtil.bindHelp( parent,IHelpContextIds.HYPERLINK_BUILDER_ID ); 
		return composite;
	}