CollatedTreeItem.java 文件源码

public CollatedTreeItem() {
    children = FXCollections.observableArrayList();
    filteredChildren = new FilteredList<>(children, new Predicate<TreeItem<T>>() {
        @Override public boolean test(TreeItem<T> t) {
            return filter.test(t.getValue());
        }
    });
    sortedChildren = new SortedList<>(filteredChildren);
    ObservableList<TreeItem<T>> original = super.getChildren();
    sortedChildren.addListener(new ListChangeListener<TreeItem<T>>() {
        @Override public void onChanged(javafx.collections.ListChangeListener.Change<? extends TreeItem<T>> c) {
            while (c.next()) {
                original.removeAll(c.getRemoved());
                original.addAll(c.getFrom(), c.getAddedSubList());
            }
        }
    });
}