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
* as the top row specified in the TopRow property.
	 */
	private void scrollTop() {
		while (currentVisibleTopRow < topRow) {
			deleteRowAt(0);
			++currentVisibleTopRow;
		}
		while (currentVisibleTopRow > topRow) {
			--currentVisibleTopRow;
			insertRowAt(0);
		}
	}
	/**
	 * Utility method: Makes sure that the number of rows that are visible
	 * correspond with what should be visible given the table control's size,
	 * where it is scrolled, and the number of rows in the underlying
	 * collection.
	 */
	private void fixNumberOfRows() {
		int numRows = rows.size();
		while (numRows > numRowsVisible) {
			deleteRowAt(numRows - 1);
			numRows = rows.size();
		}
		while (numRows < numRowsVisible) {
			insertRowAt(numRows);
			numRows = rows.size();
		}
	}
	/**