Bug 213166 [Viewers] Problems with OwnerDrawLabelProvider.setUpOwnerDraw
3.4 M4 To set up the owner draw callbacks for a viewer OwnerDrawLabelProvider.setUpOwnerDraw is offered. The problem of this is: a. there's no way to uninstall the callbacks. In our views we want to allow to enable and disable owner draw in the preferences b. from an API client perspective, it would be nicer if the label provider could install itself when installed. A good solution would be to add more life cycle to a label provider. CellLabelProvider.initialize(ColumnViewer, int column) There's already ILableProvider.dispose when a label provider is removed from a viewer.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ColumnViewer.java
super.update(element, properties);
	}
	/**
	 * Sets the cell editors of this column viewer. If editing is not supported
	 * by this viewer the call simply has no effect.
	 *
	 * <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>
	 *
	 * @param editors
	 *            the list of cell editors
	 * @since 3.1 (in subclasses, added in 3.3 to abstract class)
	 * @see ViewerColumn#setEditingSupport(EditingSupport)
	 * @see EditingSupport
	 */
	public void setCellEditors(CellEditor[] editors) {
		this.cellEditors = editors;
	}
	/**
	 * Sets the cell modifier for this column viewer. This method does nothing
	 * if editing is not supported by this viewer.
	 *
	 * <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>