plugins/git4idea/src/git4idea/history/wholeTree/TreeNavigation.java

/*
 * Copyright 2000-2010 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 git4idea.history.wholeTree;

import com.intellij.openapi.vcs.Ring;
import com.intellij.util.containers.Convertor;
import com.intellij.util.containers.ReadonlyList;
import org.jetbrains.annotations.Nullable;

import java.util.Iterator;
import java.util.List;

/**
 * @author irengrig
 */
public interface TreeNavigation {
  /**
   *
   *
   * @param row - commit idx
   * @param commits
   * @return pair: idx of closest commit with ring recorded; ring - ring for that commit
   */
  @Nullable
  Ring<Integer> getUsedWires(int row, ReadonlyList<CommitI> commits, final Convertor<Integer, List<Integer>> future);
  Iterator<WireEvent> createWireEventsIterator(int rowInclusive);
}