Bug 167323 [Viewers]Open AbstractTreeViewer for external widget implementors
As reported by Ross Camara AbstractTreeViewer would work for nebula if we would open the API a bit. Boris and I decided that we will do this in 2 steps: 1. open the API 2. moving the Virtual-Support bits from TreeViewer to AbstractTreeViewer when the nebula grid provides virtual support.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTableViewer.java
}
		
		if (min < items.length) {
			for (int i = items.length; --i >= min;) {
				disassociate(items[i]);
			}
			if (virtualManager != null) {
				virtualManager.removeIndicesFromTo(min, items.length - 1);
			}
			doRemove(min, items.length - 1);
		}
		
		
		if (doGetItemCount() == 0) {
			doRemoveAll();
		}
		
		for (int i = 0; i < min; ++i) {
			Item item = items[i];
			if (item.getData() == null) {
				updateItem(item, children[i]);
			}
		}
		
		for (int i = min; i < children.length; ++i) {
			createItem(children[i], i);
		}
	}
	/**
	 * Removes the given elements from this table viewer.