1 /*
2  * Copyright (C) 2009 Google Inc.  All rights reserved.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.google.polo.pairing.message;
18 
19 /**
20  * Internal representation of a session encoding option.
21  */
22 public class EncodingOption {
23 
24   /**
25    * Representation of a specific encoding type. The numeric values
26    * should be kept synchronized with the constants defined by
27    * Options.Encoding.EncodingType in polo.proto.
28    */
29   public enum EncodingType {
30     ENCODING_UNKNOWN(0),
31     ENCODING_ALPHANUMERIC(1),
32     ENCODING_NUMERIC(2),
33     ENCODING_HEXADECIMAL(3),
34     ENCODING_QRCODE(4);
35 
36     private final int mIntVal;
37 
EncodingType(int intVal)38     private EncodingType(int intVal) {
39       mIntVal = intVal;
40     }
41 
fromIntVal(int intVal)42     public static EncodingType fromIntVal(int intVal) {
43       for (EncodingType encType : EncodingType.values()) {
44         if (encType.getAsInt() == intVal) {
45           return encType;
46         }
47       }
48       return EncodingType.ENCODING_UNKNOWN;
49     }
50 
getAsInt()51     public int getAsInt() {
52       return mIntVal;
53     }
54   }
55 
56   private EncodingType mType;
57 
58   private int mSymbolLength;
59 
EncodingOption(EncodingType type, int symbolLength)60   public EncodingOption(EncodingType type, int symbolLength) {
61     mType = type;
62     mSymbolLength = symbolLength;
63   }
64 
65   @Override
toString()66   public String toString() {
67     return mType + ":" + mSymbolLength;
68   }
69 
getType()70   public EncodingType getType() {
71     return mType;
72   }
73 
getSymbolLength()74   public int getSymbolLength() {
75     return mSymbolLength;
76   }
77 
78   @Override
equals(Object obj)79   public boolean equals(Object obj) {
80     if (this == obj) {
81       return true;
82     }
83 
84     if (!(obj instanceof EncodingOption)) {
85       return false;
86     }
87 
88     EncodingOption other = (EncodingOption) obj;
89     if (mType == null) {
90       if (other.mType != null) {
91         return false;
92       }
93     } else if (!mType.equals(other.mType)) {
94       return false;
95     }
96 
97     return mSymbolLength == other.mSymbolLength;
98   }
99 
100   @Override
hashCode()101   public int hashCode() {
102     int result = 7;
103     result = result * 31 + (mType != null ? mType.hashCode() : 0);
104     result = result * 31 + mSymbolLength;
105     return result;
106   }
107 
108 }
109