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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      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.android.future.usb;
     18 
     19 /**
     20  * A class representing a USB accessory.
     21  */
     22 public class UsbAccessory {
     23 
     24     private final String mManufacturer;
     25     private final String mModel;
     26     private final String mDescription;
     27     private final String mVersion;
     28     private final String mUri;
     29     private final String mSerial;
     30 
     31     /* package */ UsbAccessory(android.hardware.usb.UsbAccessory accessory) {
     32         mManufacturer = accessory.getManufacturer();
     33         mModel = accessory.getModel();
     34         mDescription = accessory.getDescription();
     35         mVersion = accessory.getVersion();
     36         mUri = accessory.getUri();
     37         mSerial = accessory.getSerial();
     38     }
     39 
     40     /**
     41      * Returns the manufacturer of the accessory.
     42      *
     43      * @return the accessory manufacturer
     44      */
     45     public String getManufacturer() {
     46         return mManufacturer;
     47     }
     48 
     49     /**
     50      * Returns the model name of the accessory.
     51      *
     52      * @return the accessory model
     53      */
     54     public String getModel() {
     55         return mModel;
     56     }
     57 
     58     /**
     59      * Returns a user visible description of the accessory.
     60      *
     61      * @return the accessory description
     62      */
     63     public String getDescription() {
     64         return mDescription;
     65     }
     66 
     67     /**
     68      * Returns the version of the accessory.
     69      *
     70      * @return the accessory version
     71      */
     72     public String getVersion() {
     73         return mVersion;
     74     }
     75 
     76     /**
     77      * Returns the URI for the accessory.
     78      * This is an optional URI that might show information about the accessory
     79      * or provide the option to download an application for the accessory
     80      *
     81      * @return the accessory URI
     82      */
     83     public String getUri() {
     84         return mUri;
     85     }
     86 
     87     /**
     88      * Returns the unique serial number for the accessory.
     89      * This is an optional serial number that can be used to differentiate
     90      * between individual accessories of the same model and manufacturer
     91      *
     92      * @return the unique serial number
     93      */
     94     public String getSerial() {
     95         return mSerial;
     96     }
     97 
     98     private static boolean compare(String s1, String s2) {
     99         if (s1 == null) return (s2 == null);
    100         return s1.equals(s2);
    101     }
    102 
    103     @Override
    104     public boolean equals(Object obj) {
    105         if (obj instanceof UsbAccessory) {
    106             UsbAccessory accessory = (UsbAccessory)obj;
    107             return (compare(mManufacturer, accessory.getManufacturer()) &&
    108                     compare(mModel, accessory.getModel()) &&
    109                     compare(mDescription, accessory.getDescription()) &&
    110                     compare(mVersion, accessory.getVersion()) &&
    111                     compare(mUri, accessory.getUri()) &&
    112                     compare(mSerial, accessory.getSerial()));
    113         }
    114         return false;
    115     }
    116 
    117     @Override
    118     public int hashCode() {
    119         return ((mManufacturer == null ? 0 : mManufacturer.hashCode()) ^
    120                 (mModel == null ? 0 : mModel.hashCode()) ^
    121                 (mDescription == null ? 0 : mDescription.hashCode()) ^
    122                 (mVersion == null ? 0 : mVersion.hashCode()) ^
    123                 (mUri == null ? 0 : mUri.hashCode()) ^
    124                 (mSerial == null ? 0 : mSerial.hashCode()));
    125     }
    126 
    127     @Override
    128     public String toString() {
    129         return "UsbAccessory[mManufacturer=" + mManufacturer +
    130                             ", mModel=" + mModel +
    131                             ", mDescription=" + mDescription +
    132                             ", mVersion=" + mVersion +
    133                             ", mUri=" + mUri +
    134                             ", mSerial=" + mSerial + "]";
    135     }
    136 }
    137