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
* Method declared on StructuredViewer.
 * Builds the initial tree and handles the automatic expand feature.
 */
protected void inputChanged(Object input, Object oldInput) {
	preservingSelection(new Runnable() {
		public void run() {
			Control tree = getControl();
		    boolean useRedraw = true; 
		    if (useRedraw)
		        tree.setRedraw(false);
			removeAll(tree);
			tree.setData(getRoot());
			createChildren(tree);
			internalExpandToLevel(tree, expandToLevel);
		    if (useRedraw)
		        tree.setRedraw(true);
		}
	});
}
/**
 * Recursively collapses the subtree rooted at the given widget to the
 * given level.
 * <p>
 * </p>
 * Note that the default implementation of this method does not call
 * <code>setRedraw</code>.
 *
 * @param widget the widget
 * @param level non-negative level, or <code>ALL_LEVELS</code> to collapse
 *  all levels of the tree