| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.myfaces.tobago.model; |
| |
| import java.io.Serializable; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * Manages the selected tree paths of a tree. |
| */ |
| // TODO: might be renamed to SelectedTreeState? |
| public class SelectedState implements Serializable { |
| |
| private Set<TreePath> selectedPaths = new HashSet<>(); |
| |
| /** |
| * Checks if the given path is selected. |
| */ |
| public boolean isSelected(final TreePath path) { |
| return selectedPaths.contains(path); |
| } |
| |
| /** |
| * Checks if the given path is an ancestor of a selected node. |
| */ |
| public boolean isAncestorOfSelected(final TreePath ancestorPath) { |
| if (ancestorPath.isRoot()) { |
| return !selectedPaths.isEmpty(); |
| } |
| for (TreePath selectedPath : selectedPaths) { |
| for (TreePath p = selectedPath; !p.isRoot(); p = p.getParent()) { |
| if (p.equals(ancestorPath)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Select the given path. |
| */ |
| public void select(final TreePath path) { |
| selectedPaths.add(path); |
| } |
| |
| /** |
| * Unselect the given path. |
| */ |
| public void unselect(final TreePath path) { |
| selectedPaths.remove(path); |
| } |
| |
| /** |
| * Set the selected path and remove all prior selections. This is useful for "single selection" mode. |
| */ |
| public void clearAndSelect(final TreePath path) { |
| clear(); |
| select(path); |
| } |
| |
| /** |
| * Clears the selected state, so that no TreePath is selected. |
| */ |
| public void clear() { |
| selectedPaths.clear(); |
| } |
| |
| /** |
| * Set the selection state of the given path |
| */ |
| public void select(final TreePath path, final boolean selected) { |
| if (selected) { |
| select(path); |
| } else { |
| unselect(path); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return selectedPaths.toString(); |
| } |
| } |