001/*
002 * (C) Copyright 2006-2008 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bstefanescu
018 *
019 * $Id$
020 */
021
022package org.nuxeo.ecm.webengine.ui.json;
023
024import java.util.ArrayList;
025import java.util.Collection;
026import java.util.List;
027import java.util.Map;
028
029import org.nuxeo.common.utils.StringUtils;
030
031/**
032 * @author <a href="mailto:[email protected]">Bogdan Stefanescu</a>
033 */
034public abstract class JQueryTreeBuilder<T> {
035
036    public static final String CHILDREN = "children";
037
038    public List<Map<String, Object>> buildTree(T root, String path) {
039        if (path == null || path.length() == 0 || "/".equals(path)) {
040            return buildChildren(root);
041        }
042        String[] ar = StringUtils.split(path, '/', false);
043        if (ar.length > 1) {
044            String name = getName(root);
045            if (name.equals(ar[0])) {
046                return buildChildren(root, ar, 1);
047            }
048        }
049
050        return buildChildren(root);
051    }
052
053    public List<Map<String, Object>> buildChildren(T parent) {
054        List<Map<String, Object>> json = new ArrayList<>();
055        Collection<T> children = getChildren(parent);
056        if (children != null) {
057            for (T obj : children) {
058                Map<String, Object> map = toJson(obj);
059                json.add(map);
060            }
061        }
062        return json;
063    }
064
065    public List<Map<String, Object>> buildChildren(T parent, String[] path, int off) {
066        List<Map<String, Object>> json = new ArrayList<>();
067        String expandName = path[off];
068        Collection<T> children = getChildren(parent);
069        if (children != null) {
070            for (T obj : children) {
071                Map<String, Object> map = toJson(obj);
072                String childName = getName(obj);
073                if (expandName.equals(childName)) {
074                    List<Map<String, Object>> jsonChildren;
075                    if (off < path.length - 1) {
076                        jsonChildren = buildChildren(obj, path, off + 1);
077                    } else {
078                        jsonChildren = buildChildren(obj);
079                    }
080                    map.put(CHILDREN, jsonChildren);
081                }
082                json.add(map);
083            }
084        }
085        return json;
086    }
087
088    protected abstract T getObject(String name);
089
090    protected abstract String getName(T obj);
091
092    protected abstract Collection<T> getChildren(T obj);
093
094    protected abstract Map<String, Object> toJson(T obj);
095
096}