Method treeExpanded

unused/javax/swing/JTree.java:4233–4250

Tree Model Expansion notification. @param e a Tree node insertion event

(TreeExpansionEvent e)

         * @param e  a Tree node insertion event
         */
        public  void treeExpanded(TreeExpansionEvent e) {
            fireVisibleDataPropertyChange();
            TreePath path = e.getPath();
            if (path != null) {
                // TIGER - 4839971
                // Set parent to null so AccessibleJTreeNode computes
                // its parent.
                AccessibleJTreeNode node = new AccessibleJTreeNode(JTree.this,
                                                                   path,
                                                                   null);
                PropertyChangeEvent pce = new PropertyChangeEvent(node,
                    AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
                    AccessibleState.COLLAPSED,
                    AccessibleState.EXPANDED);
                firePropertyChange(AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
                                   null, pce);
            }
        }

        /**
        *  Fire an active descendant property change notification.