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
private int computeTopRowDelta(int row) {
		int topRowDelta;
		if (row < 0) {
			topRowDelta = row;
		} else if (row >= getNumRowsVisible()) {
			topRowDelta = row - getNumRowsVisible() + 1;
		} else {
			return 0;
		}
		return topRowDelta;
	}
	
	/**
	 * The SelectionListener for the table's slider control.
	 */
	private SelectionListener sliderSelectionListener = new SelectionListener() {
		public void widgetSelected(SelectionEvent e) {
			if (slider.getSelection() == topRow) {
				return;
			}
			if (!fireRequestRowChangeEvent()) {
				slider.setSelection(topRow);
				return;
			}
			deselectCurrentRowIfVisible();
			int delta = topRow - slider.getSelection();
			int oldCurrentRow = currentRow;
			currentRow += delta;
			
			setTopRow(slider.getSelection());