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
return;
			}
			needToRequestRC = false;
			deselect(getControl(currentColumn, currentRow));
			deferredSetFocus(getControl(0, currentRow + 1), false);
		} else {
			if (topRow + numRowsVisible >= numRowsInCollection) {
				
				return;
			}
			
			if (!fireRequestRowChangeEvent()) {
				return;
			}
			needToRequestRC = false;
			deselect(getControl(currentColumn, currentRow));
			setTopRow(topRow + 1);
			deferredSetFocus(getControl(0, currentRow), true);
		}
	}
	/**
	 * Try to go to the previous row in the collection.
	 * 
	 * @param row
	 *            The current table row.
	 */
	private void handlePreviousRowNavigation(TableRow row) {
		if (currentRow == 0) {
			if (topRow == 0) {