Bug 82798 TableViewer internalRefresh is very slow as of 1.19
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableViewer.java
image = updateLabel.getImage();
					}
				} else {
					text = tprov.getColumnText(element, column);
					image = tprov.getColumnImage(element, column);
				}
				
				if (text == null)
					text = ""; 
				ti.setText(column, text);
				if (ti.getImage(column) != image) {
					ti.setImage(column, image);
				}
			}
			
			
			colorAndFontCollector.applyFontsAndColors(ti);
		}
	}
	/**
	 * Starts editing the given element.
	 * 
	 * @param element
	 *            the element
	 * @param column
	 *            the column number
	 */
	public void editElement(Object element, int column) {
		tableViewerImpl.editElement(element, column);
	}