Bug 24024 [Viewers] Error in Javadoc for AbstractTreeViewer::setAutoExpandLevel()
from Javadoc for AbstractTreeViewer::setAutoExpandLevel() : * Sets the auto-expand level. * The value 0 means that the root's children are not visible; * 1 means that the root is expanded so that its children are visible, * but the root's grandchildren are not; and so on. That's off by one. 0 means auto-expand is off. 1 means that roots are not expanded. 2 means that children of the roots are expanded, but not grandchildren; etc. * The value <code>EXPAND_ALL</code> means that all subtrees should be * expanded. The constant should read ALL_LEVELS Note that some other expansion-methods need these comment updates too.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
*/
public boolean isExpandable(Object element) {
	return ((ITreeContentProvider) getContentProvider()).hasChildren(element);
}
/* (non-Javadoc)
 * Method declared on Viewer.
 */
protected void labelProviderChanged() {
	
	Control tree= getControl();
	tree.setRedraw(false);
	
	internalRefresh(tree, getRoot(), false, true);
	tree.setRedraw(true);
}
/**
 * Creates a new item.
 *
 * @param parent the parent widget
 * @param style SWT style bits
 * @param index if non-negative, indicates the position to insert the item 
 *    into its parent
 * @return the newly-created item 
 */
protected abstract Item newItem(Widget parent, int style, int index);
/**
 * Removes the given elements from this viewer.
 * The selection is updated if required.
 * <p>
 * This method should be called (by the content provider) when elements