/*
* Copyright 2015 Julien Viet
*
* 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 io.termd.core.readline.functions;
import io.termd.core.readline.Function;
import io.termd.core.readline.LineBuffer;
import io.termd.core.readline.Readline;
import java.util.List;
/**
* @author <a href="mailto:julien@julienviet.com">Julien Viet</a>
*/
public class NextHistory implements Function {
@Override
public String name() {
return "next-history";
}
@Override
public void apply(Readline.Interaction interaction) {
List<int[]> history = interaction.history();
int curr = interaction.getHistoryIndex();
if (curr >= 0) {
int next = curr - 1;
int[] line;
if (next == -1) {
line = (int[]) interaction.data().get("abc");
} else {
line = history.get(next);
}
interaction.refresh(new LineBuffer().insert(line));
interaction.setHistoryIndex(next);
}
interaction.resume();
}
}