Bug 146750 [DataBinding][CompositeTable] Crash when dragging scroll bar
Run CompositeTableTest Drag scroll bar down Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: -1, Size: 6 at java.util.LinkedList.entry(LinkedList.java:360) at java.util.LinkedList.get(LinkedList.java:303) at org.eclipse.jface.examples.databinding.compositetable.InternalCompositeTable.currentRow(InternalCompositeTable.java:1671) at org.eclipse.jface.examples.databinding.compositetable.InternalCompositeTable.fireRowDepartEvent(InternalCompositeTable.java:1511) at org.eclipse.jface.examples.databinding.compositetable.InternalCompositeTable.setTopRow(InternalCompositeTable.java:732) at org.eclipse.jface.examples.databinding.compositetable.InternalCompositeTable$2.widgetSelected(InternalCompositeTable.java:1239) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:90) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1074) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3158) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2838) at org.eclipse.jface.examples.databinding.compositetable.test.CompositeTableTest.main(CompositeTableTest.java:167)
examples/org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/compositetable/InternalCompositeTable.java
*            TODO
	 * @return height of child
	 */
	private int layoutChild(Control child, boolean isHeader) {
		if (child instanceof Composite) {
			Composite composite = (Composite) child;
			if (composite.getLayout() == null) {
				return parent.layoutHeaderOrRow(composite, isHeader);
			}
			composite.layout(true);
			return composite.getSize().y;
		}
		return child.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).y;
	}
	
	
	/**
	 * Construct a header or row object on demand. Logs an error and returns
	 * null on failure.
	 * 
	 * @param parent
	 *            The SWT parent.
	 * @param constructor
	 *            The header or row object's constructor.
	 * @return The constructed control or null if none could be constructed.
	 */
	private Control createInternalControl(Composite parent,
			Constructor constructor) {
		Control result = null;
		try {