TreeUi: isAwlaysLeaf
[fedora-idea.git] / platform / platform-api / src / com / intellij / ide / util / treeView / AbstractTreeStructure.java
blobf383b43b6b86428b8402f713a282b1e814ca0a41
1 /*
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);
25 @Nullable
26 public abstract Object getParentElement(Object element);
28 @NotNull
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){
35 return false;
38 public boolean isAlwaysLeaf(Object element) {
39 return false;