Bug 154329 [Viewers] Provide widget independent TableViewer implementation
At the moment the concrete classes to provide a table or a tree require that the underlying Widget is an org.eclipse.widgets.Table and org.eclipse.widgets.Tree. It would make sense to extract all code parts who don't depend on the concrete-widget to an AbstractBaseClass between: - ColumnViewer > TableViewer => ColumnViewer > AbstractBaseTableViewer > TableViewer - AbstractTreeViewer > TreeViewer => AbstractTreeViewer > AbstractBaseTreeViewer > TreeViewer
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableViewer.java
virtualManager.adjustCacheSize(count);
		}
		getTable().redraw();
	}
	/**
	 * Replace the entries starting at index with elements. This method assumes
	 * all of these values are correct and will not call the content provider to
	 * verify. <strong>Note that this method will create a TableItem for all of
	 * the elements provided</strong>.
	 * 
	 * @param element
	 * @param index
	 * @see ILazyContentProvider
	 * 
	 * @since 3.1
	 */
	public void replace(Object element, int index) {
		TableItem item = getTable().getItem(index);
		refreshItem(item, element);
	}
	/**
	 * Clear the table item at the specified index
	 * 
	 * @param index
	 *            the index of the table item to be cleared
	 * 
	 * @since 3.1
	 */
	public void clear(int index) {
		TableItem item = getTable().getItem(index);