1 /* 2 * Copyright (C) 2014 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.nfc; 18 19 /** 20 * Parameters for enabling NFC tag discovery and polling, 21 * and host card emulation. 22 */ 23 public final class NfcDiscoveryParameters { 24 25 public static class Builder { 26 27 private NfcDiscoveryParameters mParameters; 28 Builder()29 private Builder() { 30 mParameters = new NfcDiscoveryParameters(); 31 } 32 setTechMask(int techMask)33 public NfcDiscoveryParameters.Builder setTechMask(int techMask) { 34 mParameters.mTechMask = techMask; 35 return this; 36 } 37 setEnableLowPowerDiscovery(boolean enable)38 public NfcDiscoveryParameters.Builder setEnableLowPowerDiscovery(boolean enable) { 39 mParameters.mEnableLowPowerDiscovery = enable; 40 return this; 41 } 42 setEnableReaderMode(boolean enable)43 public NfcDiscoveryParameters.Builder setEnableReaderMode(boolean enable) { 44 mParameters.mEnableReaderMode = enable; 45 46 if (enable) { 47 mParameters.mEnableLowPowerDiscovery = false; 48 } 49 50 return this; 51 } 52 setEnableHostRouting(boolean enable)53 public NfcDiscoveryParameters.Builder setEnableHostRouting(boolean enable) { 54 mParameters.mEnableHostRouting = enable; 55 return this; 56 } 57 setEnableP2p(boolean enable)58 public NfcDiscoveryParameters.Builder setEnableP2p(boolean enable) { 59 mParameters.mEnableP2p = enable; 60 return this; 61 } 62 build()63 public NfcDiscoveryParameters build() { 64 if (mParameters.mEnableReaderMode && 65 (mParameters.mEnableLowPowerDiscovery || mParameters.mEnableP2p)) { 66 throw new IllegalStateException("Can't enable LPTD/P2P and reader mode " + 67 "simultaneously"); 68 } 69 return mParameters; 70 } 71 } 72 73 static final int NFC_POLL_DEFAULT = -1; 74 75 // NOTE: when adding a new field, don't forget to update equals() and toString() below 76 private int mTechMask = 0; 77 private boolean mEnableLowPowerDiscovery = true; 78 private boolean mEnableReaderMode = false; 79 private boolean mEnableHostRouting = false; 80 private boolean mEnableP2p = false; 81 NfcDiscoveryParameters()82 public NfcDiscoveryParameters() {} 83 getTechMask()84 public int getTechMask() { 85 return mTechMask; 86 } 87 shouldEnableLowPowerDiscovery()88 public boolean shouldEnableLowPowerDiscovery() { 89 return mEnableLowPowerDiscovery; 90 } 91 shouldEnableReaderMode()92 public boolean shouldEnableReaderMode() { 93 return mEnableReaderMode; 94 } 95 shouldEnableHostRouting()96 public boolean shouldEnableHostRouting() { 97 return mEnableHostRouting; 98 } 99 shouldEnableDiscovery()100 public boolean shouldEnableDiscovery() { 101 return mTechMask != 0 || mEnableHostRouting; 102 } 103 shouldEnableP2p()104 public boolean shouldEnableP2p() { 105 return mEnableP2p; 106 } 107 108 @Override equals(Object obj)109 public boolean equals(Object obj) { 110 if (obj == this) { 111 return true; 112 } 113 114 if ((obj == null) || (obj.getClass() != this.getClass())) { 115 return false; 116 } 117 NfcDiscoveryParameters params = (NfcDiscoveryParameters) obj; 118 return mTechMask == params.mTechMask && 119 (mEnableLowPowerDiscovery == params.mEnableLowPowerDiscovery) && 120 (mEnableReaderMode == params.mEnableReaderMode) && 121 (mEnableHostRouting == params.mEnableHostRouting) 122 && (mEnableP2p == params.mEnableP2p); 123 } 124 125 @Override toString()126 public String toString() { 127 StringBuilder sb = new StringBuilder(); 128 if (mTechMask == NFC_POLL_DEFAULT) { 129 sb.append("mTechMask: default\n"); 130 } else { 131 sb.append("mTechMask: " + Integer.toString(mTechMask) + "\n"); 132 } 133 sb.append("mEnableLPD: " + Boolean.toString(mEnableLowPowerDiscovery) + "\n"); 134 sb.append("mEnableReader: " + Boolean.toString(mEnableReaderMode) + "\n"); 135 sb.append("mEnableHostRouting: " + Boolean.toString(mEnableHostRouting) + "\n"); 136 sb.append("mEnableP2p: " + Boolean.toString(mEnableP2p)); 137 return sb.toString(); 138 } 139 newBuilder()140 public static NfcDiscoveryParameters.Builder newBuilder() { 141 return new Builder(); 142 } 143 getDefaultInstance()144 public static NfcDiscoveryParameters getDefaultInstance() { 145 return new NfcDiscoveryParameters(); 146 } 147 getNfcOffParameters()148 public static NfcDiscoveryParameters getNfcOffParameters() { 149 return new NfcDiscoveryParameters(); 150 } 151 } 152