2 * Copyright 2000-2009 JetBrains s.r.o.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com
.intellij
.ide
.util
.treeView
;
19 import org
.jetbrains
.annotations
.NotNull
;
20 import org
.jetbrains
.annotations
.Nullable
;
22 public abstract class AbstractTreeStructure
{
23 public abstract Object
getRootElement();
24 public abstract Object
[] getChildElements(Object element
);
26 public abstract Object
getParentElement(Object element
);
29 public abstract NodeDescriptor
createDescriptor(Object element
, NodeDescriptor parentDescriptor
);
31 public abstract void commit();
32 public abstract boolean hasSomethingToCommit();
34 public boolean isToBuildChildrenInBackground(Object element
){
38 public boolean isAlwaysLeaf(Object element
) {