| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.alibaba.dubbo.qos.textui; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static org.apache.commons.lang3.StringUtils.repeat; |
| |
| /** |
| * Ladder |
| */ |
| public class TLadder implements TComponent { |
| |
| // separator |
| private static final String LADDER_CHAR = "`-"; |
| |
| // tab |
| private static final String STEP_CHAR = " "; |
| |
| // indent length |
| private static final int INDENT_STEP = 2; |
| |
| private final List<String> items = new ArrayList<String>(); |
| |
| |
| @Override |
| public String rendering() { |
| final StringBuilder ladderSB = new StringBuilder(); |
| int deep = 0; |
| for (String item : items) { |
| |
| // no separator is required for the first item |
| if (deep == 0) { |
| ladderSB |
| .append(item) |
| .append("\n"); |
| } |
| |
| // need separator for others |
| else { |
| ladderSB |
| .append(repeat(STEP_CHAR, deep * INDENT_STEP)) |
| .append(LADDER_CHAR) |
| .append(item) |
| .append("\n"); |
| } |
| |
| deep++; |
| |
| } |
| return ladderSB.toString(); |
| } |
| |
| /** |
| * add one item |
| */ |
| public TLadder addItem(String item) { |
| items.add(item); |
| return this; |
| } |
| |
| } |