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
handlePreviousRowNavigation(sender);
				}
			} else if (e.detail == SWT.TRAVERSE_RETURN) {
				e.detail = SWT.TRAVERSE_NONE;
				if (currentColumn >= sender.getNumColumns() - 1) {
					handleNextRowNavigation();
				} else {
					deferredSetFocus(getControl(currentColumn + 1, currentRow),
							false);
				}
			}
		}
	}
	/**
	 * Makes sure that the focused row is visible
	 * 
	 * @return true if the display needed to be scrolled; false otherwise
	 */
	public boolean makeFocusedRowVisible() {
		int topRowDelta = computeTopRowDelta(currentRow);
		if (topRowDelta == 0) {
			return false;
		}
		currentRow += -1 * topRowDelta;
		
		setTopRow(topRow + topRowDelta);
		getControl(currentColumn, currentRow).setFocus(); 
		return true;
	}