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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
<span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
<span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a>
<span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a>
<span class="sourceLineNo">017</span> */<a name="line.17"></a>
<span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.hbtop.terminal;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import edu.umd.cs.findbugs.annotations.Nullable;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.util.Objects;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>/**<a name="line.24"></a>
<span class="sourceLineNo">025</span> * Represents the user pressing a key on the keyboard.<a name="line.25"></a>
<span class="sourceLineNo">026</span> */<a name="line.26"></a>
<span class="sourceLineNo">027</span>@InterfaceAudience.Private<a name="line.27"></a>
<span class="sourceLineNo">028</span>public class KeyPress {<a name="line.28"></a>
<span class="sourceLineNo">029</span> public enum Type {<a name="line.29"></a>
<span class="sourceLineNo">030</span> Character,<a name="line.30"></a>
<span class="sourceLineNo">031</span> Escape,<a name="line.31"></a>
<span class="sourceLineNo">032</span> Backspace,<a name="line.32"></a>
<span class="sourceLineNo">033</span> ArrowLeft,<a name="line.33"></a>
<span class="sourceLineNo">034</span> ArrowRight,<a name="line.34"></a>
<span class="sourceLineNo">035</span> ArrowUp,<a name="line.35"></a>
<span class="sourceLineNo">036</span> ArrowDown,<a name="line.36"></a>
<span class="sourceLineNo">037</span> Insert,<a name="line.37"></a>
<span class="sourceLineNo">038</span> Delete,<a name="line.38"></a>
<span class="sourceLineNo">039</span> Home,<a name="line.39"></a>
<span class="sourceLineNo">040</span> End,<a name="line.40"></a>
<span class="sourceLineNo">041</span> PageUp,<a name="line.41"></a>
<span class="sourceLineNo">042</span> PageDown,<a name="line.42"></a>
<span class="sourceLineNo">043</span> ReverseTab,<a name="line.43"></a>
<span class="sourceLineNo">044</span> Tab,<a name="line.44"></a>
<span class="sourceLineNo">045</span> Enter,<a name="line.45"></a>
<span class="sourceLineNo">046</span> F1,<a name="line.46"></a>
<span class="sourceLineNo">047</span> F2,<a name="line.47"></a>
<span class="sourceLineNo">048</span> F3,<a name="line.48"></a>
<span class="sourceLineNo">049</span> F4,<a name="line.49"></a>
<span class="sourceLineNo">050</span> F5,<a name="line.50"></a>
<span class="sourceLineNo">051</span> F6,<a name="line.51"></a>
<span class="sourceLineNo">052</span> F7,<a name="line.52"></a>
<span class="sourceLineNo">053</span> F8,<a name="line.53"></a>
<span class="sourceLineNo">054</span> F9,<a name="line.54"></a>
<span class="sourceLineNo">055</span> F10,<a name="line.55"></a>
<span class="sourceLineNo">056</span> F11,<a name="line.56"></a>
<span class="sourceLineNo">057</span> F12,<a name="line.57"></a>
<span class="sourceLineNo">058</span> Unknown<a name="line.58"></a>
<span class="sourceLineNo">059</span> }<a name="line.59"></a>
<span class="sourceLineNo">060</span><a name="line.60"></a>
<span class="sourceLineNo">061</span> private final Type type;<a name="line.61"></a>
<span class="sourceLineNo">062</span> private final Character character;<a name="line.62"></a>
<span class="sourceLineNo">063</span> private final boolean alt;<a name="line.63"></a>
<span class="sourceLineNo">064</span> private final boolean ctrl;<a name="line.64"></a>
<span class="sourceLineNo">065</span> private final boolean shift;<a name="line.65"></a>
<span class="sourceLineNo">066</span><a name="line.66"></a>
<span class="sourceLineNo">067</span> public KeyPress(Type type, @Nullable Character character, boolean alt, boolean ctrl,<a name="line.67"></a>
<span class="sourceLineNo">068</span> boolean shift) {<a name="line.68"></a>
<span class="sourceLineNo">069</span> this.type = Objects.requireNonNull(type);<a name="line.69"></a>
<span class="sourceLineNo">070</span> this.character = character;<a name="line.70"></a>
<span class="sourceLineNo">071</span> this.alt = alt;<a name="line.71"></a>
<span class="sourceLineNo">072</span> this.ctrl = ctrl;<a name="line.72"></a>
<span class="sourceLineNo">073</span> this.shift = shift;<a name="line.73"></a>
<span class="sourceLineNo">074</span> }<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span> public Type getType() {<a name="line.76"></a>
<span class="sourceLineNo">077</span> return type;<a name="line.77"></a>
<span class="sourceLineNo">078</span> }<a name="line.78"></a>
<span class="sourceLineNo">079</span><a name="line.79"></a>
<span class="sourceLineNo">080</span> @Nullable<a name="line.80"></a>
<span class="sourceLineNo">081</span> public Character getCharacter() {<a name="line.81"></a>
<span class="sourceLineNo">082</span> return character;<a name="line.82"></a>
<span class="sourceLineNo">083</span> }<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span> public boolean isAlt() {<a name="line.85"></a>
<span class="sourceLineNo">086</span> return alt;<a name="line.86"></a>
<span class="sourceLineNo">087</span> }<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>
<span class="sourceLineNo">089</span> public boolean isCtrl() {<a name="line.89"></a>
<span class="sourceLineNo">090</span> return ctrl;<a name="line.90"></a>
<span class="sourceLineNo">091</span> }<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span> public boolean isShift() {<a name="line.93"></a>
<span class="sourceLineNo">094</span> return shift;<a name="line.94"></a>
<span class="sourceLineNo">095</span> }<a name="line.95"></a>
<span class="sourceLineNo">096</span><a name="line.96"></a>
<span class="sourceLineNo">097</span> @Override<a name="line.97"></a>
<span class="sourceLineNo">098</span> public String toString() {<a name="line.98"></a>
<span class="sourceLineNo">099</span> return "KeyPress{" + "type=" + type + ", character=" + escape(character) + ", alt=" + alt<a name="line.99"></a>
<span class="sourceLineNo">100</span> + ", ctrl=" + ctrl + ", shift=" + shift + '}';<a name="line.100"></a>
<span class="sourceLineNo">101</span> }<a name="line.101"></a>
<span class="sourceLineNo">102</span><a name="line.102"></a>
<span class="sourceLineNo">103</span> private String escape(Character character) {<a name="line.103"></a>
<span class="sourceLineNo">104</span> if (character == null) {<a name="line.104"></a>
<span class="sourceLineNo">105</span> return "null";<a name="line.105"></a>
<span class="sourceLineNo">106</span> }<a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
<span class="sourceLineNo">108</span> switch (character) {<a name="line.108"></a>
<span class="sourceLineNo">109</span> case '\n':<a name="line.109"></a>
<span class="sourceLineNo">110</span> return "\\n";<a name="line.110"></a>
<span class="sourceLineNo">111</span><a name="line.111"></a>
<span class="sourceLineNo">112</span> case '\b':<a name="line.112"></a>
<span class="sourceLineNo">113</span> return "\\b";<a name="line.113"></a>
<span class="sourceLineNo">114</span><a name="line.114"></a>
<span class="sourceLineNo">115</span> case '\t':<a name="line.115"></a>
<span class="sourceLineNo">116</span> return "\\t";<a name="line.116"></a>
<span class="sourceLineNo">117</span><a name="line.117"></a>
<span class="sourceLineNo">118</span> default:<a name="line.118"></a>
<span class="sourceLineNo">119</span> return character.toString();<a name="line.119"></a>
<span class="sourceLineNo">120</span> }<a name="line.120"></a>
<span class="sourceLineNo">121</span> }<a name="line.121"></a>
<span class="sourceLineNo">122</span>}<a name="line.122"></a>
</pre>
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