Bug 15844 [Exception Handling] SelectionChange events and NPE
Build 20020508 Due to new global actions there are now more objects listening to selection changes send out by a JFace viewer. We now had the case that one of the listener generated a NPE. As a result all listeners registered after that one didn't receive the selection change event. StructuredViewers should be more fault tolorant to exceptions when informing listeners.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
}
/**
 * Returns the number of child items of the given SWT control.
 *
 * @param control the control
 * @return the number of children
 */
protected abstract int getItemCount(Control control);
/**
 * Returns the number of child items of the given SWT item.
 *
 * @param item the item
 * @return the number of children
 */
protected abstract int getItemCount(Item item);
/**
 * Returns the child items of the given SWT item.
 *
 * @param item the item
 * @return the child items
 */
protected abstract Item[] getItems(Item item);
/**
 * Returns the item after the given item in the tree, or
 * <code>null</code> if there is no next item.
 *
 * @param item the item
 * @param includeChildren <code>true</code> if the children are 
 *  considered in determining which item is next, and <code>false</code>
 *  if subtrees are ignored