| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * Licensed 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 com.intellij.util.containers; |
| |
| import java.util.*; |
| |
| /** |
| * @author peter |
| */ |
| public class SortedList<T> extends AbstractList<T>{ |
| private final SortedMap<T, List<T>> myMap; |
| private final Comparator<T> myComparator; |
| private List<T> myDelegate = null; |
| |
| public SortedList(final Comparator<T> comparator) { |
| myComparator = comparator; |
| myMap = new TreeMap<T, List<T>>(comparator); |
| } |
| |
| public Comparator<T> getComparator() { |
| return myComparator; |
| } |
| |
| @Override |
| public void add(final int index, final T element) { |
| _addToMap(element); |
| } |
| |
| private void _addToMap(T element) { |
| List<T> group = myMap.get(element); |
| if (group == null) { |
| myMap.put(element, group = new ArrayList<T>()); |
| } |
| group.add(element); |
| myDelegate = null; |
| } |
| |
| @Override |
| public boolean add(T t) { |
| _addToMap(t); |
| return true; |
| } |
| |
| @Override |
| public T remove(final int index) { |
| final T value = get(index); |
| remove(value); |
| return value; |
| } |
| |
| @Override |
| public boolean remove(Object value) { |
| final List<T> group = myMap.remove(value); |
| if (group == null) return false; |
| |
| group.remove(value); |
| if (!group.isEmpty()) { |
| myMap.put(group.get(0), group); |
| } |
| myDelegate = null; |
| return true; |
| } |
| |
| @Override |
| public T get(final int index) { |
| ensureLinearized(); |
| return myDelegate.get(index); |
| } |
| |
| private List<T> ensureLinearized() { |
| if (myDelegate == null) { |
| myDelegate = ContainerUtil.concat(myMap.values()); |
| } |
| return myDelegate; |
| } |
| |
| @Override |
| public void clear() { |
| myMap.clear(); |
| myDelegate = null; |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return myMap.isEmpty(); |
| } |
| |
| @Override |
| public int size() { |
| ensureLinearized(); |
| return myDelegate.size(); |
| } |
| } |