Bug 174701 [Viewers] ViewerRow should be reused instead of connected to the Item
Currently we create a ViewerRow ver every Item we create this can degrade performance, we should cache the row and reuse it
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
/**
	 * Returns the widget to be selected for the given element or tree path.
	 * 
	 * @param elementOrTreePath
	 *            the element or tree path to select
	 * @return the widget to be selected, or <code>null</code> if not found
	 * 
	 * @since 3.1
	 */
	protected Widget internalGetWidgetToSelect(Object elementOrTreePath) {
		if (elementOrTreePath instanceof TreePath) {
			TreePath treePath = (TreePath) elementOrTreePath;
			if (treePath.getSegmentCount() == 0) {
				return null;
			}
			Widget[] candidates = findItems(treePath.getLastSegment());
			for (int i = 0; i < candidates.length; i++) {
				Widget candidate = candidates[i];
				if (!(candidate instanceof Item)) {
					continue;
				}
				if (treePath.equals(getTreePathFromItem((Item) candidate),
						getComparer())) {
					return candidate;
				}
			}
			return null;
		}
		return findItem(elementOrTreePath);
	}