TreeParent.java

   1 /*
   2  * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.argeo.eclipse.ui;
  18
  19 import java.util.ArrayList;
  20 import java.util.List;
  21
  22 public class TreeParent extends TreeObject {
  23         private List<Object> children;
  24
  25         private boolean loaded;
  26
  27         public TreeParent(String name) {
  28                 super(name);
  29                 children = new ArrayList<Object>();
  30                 loaded = false;
  31         }
  32
  33         public synchronized void addChild(Object child) {
  34                 loaded = true;
  35                 children.add(child);
  36                 // bsinou: was 'if (child instanceof TreeParent)'
  37                 if (child instanceof TreeObject)
  38                         ((TreeObject) child).setParent(this);
  39         }
  40
  41         public synchronized void removeChild(Object child) {
  42                 children.remove(child);
  43                 if (child instanceof TreeParent)
  44                         ((TreeParent) child).setParent(null);
  45                 // TODO: clear subtree recursively
  46         }
  47
  48         public synchronized void clearChildren() {
  49                 loaded = false;
  50                 children.clear();
  51                 // TODO: clear also the objects
  52         }
  53
  54         public synchronized Object[] getChildren() {
  55                 return children.toArray(new Object[children.size()]);
  56         }
  57
  58         public synchronized boolean hasChildren() {
  59                 return children.size() > 0;
  60         }
  61
  62         public Object getChildByName(String name) {
  63                 for (Object child : children) {
  64                         if (child.toString().equals(name))
  65                                 return child;
  66                 }
  67                 return null;
  68         }
  69
  70         public synchronized Boolean isLoaded() {
  71                 return loaded;
  72         }
  73 }