| /* |
| * Copyright 2000-2014 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.openapi.editor.impl.softwrap.mapping; |
| |
| import com.intellij.openapi.util.Pair; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Abstract super class for {@link DataProvider} implementations that use the same key all the time. |
| * |
| * @author Denis Zhdanov |
| * @since Aug 31, 2010 12:19:32 PM |
| */ |
| public abstract class AbstractDataProvider<K extends Comparable<? super K>, V> implements DataProvider<K, V> { |
| |
| private final K myKey; |
| |
| public AbstractDataProvider(K key) { |
| myKey = key; |
| } |
| |
| @Nullable |
| @Override |
| public Pair<K, V> getData() { |
| V data = doGetData(); |
| return data == null ? null : Pair.create(myKey, data); |
| } |
| |
| /** |
| * @return current data |
| */ |
| @Nullable |
| protected abstract V doGetData(); |
| } |