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/ColumnViewer.java
getControl().setRedraw(false);
						setSelection(new StructuredSelection(cell.getElement()));
						triggerEditorActivationEvent(new ColumnViewerEditorActivationEvent(
								cell));
						getControl().setRedraw(true);
					}
				}
			}
		}
	}
	/**
	 * Return the CellEditors for the receiver, or <code>null</code> if no
	 * cell editors are set.
	 * <p>
	 * Since 3.3, an alternative API is available, see
	 * {@link ViewerColumn#setEditingSupport(EditingSupport)} for a more
	 * flexible way of editing values in a column viewer.
	 * </p>
	 * 
	 * @return CellEditor[]
	 * @since 3.1 (in subclasses, added in 3.3 to abstract class)
	 * @see ViewerColumn#setEditingSupport(EditingSupport)
	 * @see EditingSupport
	 */
	public CellEditor[] getCellEditors() {
		return cellEditors;
	}
	/**
	 * Returns the cell modifier of this viewer, or <code>null</code> if none
	 * has been set.