Bug 171415 [Viewers] Table viewer needs to clear label, image when items are reused
If an item is reused for a different element on a refresh, the table viewer needs to clear the label and image from the item being reused. This is necessary to communicate to the label provider that a new label is needed (i.e. the label provider may defer providing a label if decorators are not ready). This is what the tree viewer does. To see the problem, open the Java Browsing perspective and select a Java project. Then click between different packages. Notice that some of the labels in the Types list take a while to update. Opening one of these reveals that the label is showing the wrong text.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableViewer.java
* Returns this table viewer's table control.
	 * 
	 * @return the table control
	 */
	public Table getTable() {
		return table;
	}
	
	protected AbstractViewerEditor createViewerEditor() {
		return new AbstractViewerEditor(this) {
			protected StructuredSelection createSelection(Object element) {
				return new StructuredSelection(element);
			}
			protected Item[] getSelection() {
				return table.getSelection();
			}
			protected void setEditor(Control w, Item item, int fColumnNumber) {
				tableEditor.setEditor(w, (TableItem) item, fColumnNumber);
			}
			protected void setLayoutData(LayoutData layoutData) {
				tableEditor.grabHorizontal = layoutData.grabHorizontal;
				tableEditor.horizontalAlignment = layoutData.horizontalAlignment;
				tableEditor.minimumWidth = layoutData.minimumWidth;
			}
			protected void showSelection() {
				table.showSelection();
			}
		};
	}