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
if (parent.scrollListeners.size() < 1) {
			return;
		}
		
		for (Iterator scrollListenersIter = parent.scrollListeners.iterator(); scrollListenersIter.hasNext();) {
			ScrollListener scrollListener = (ScrollListener) scrollListenersIter.next();
			scrollListener.tableScrolled(scrollEvent);
		}
	}
	
	
	/**
	 * Set the widget's selection to an empty selection.
	 * 
	 * @param widget
	 *            The widget to deselect
	 */
	private void deselect(Widget widget) {
		if (DuckType.instanceOf(ISelectableRegionControl.class, widget)) {
			ISelectableRegionControl control = (ISelectableRegionControl) DuckType
					.implement(ISelectableRegionControl.class, widget);
			control.setSelection(0, 0);
		}
	}
	/**
	 * Try to go to the next row in the collection.
	 */
	private void handleNextRowNavigation() {
		if (currentRow < numRowsVisible - 1) {
			if (!fireRequestRowChangeEvent()) {