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
17package com.android.nfc;
18
19/**
20 * Parameters for enabling NFC tag discovery and polling,
21 * and host card emulation.
22 */
23public final class NfcDiscoveryParameters {
24
25    public static class Builder {
26
27        private NfcDiscoveryParameters mParameters;
28
29        private Builder() {
30            mParameters = new NfcDiscoveryParameters();
31        }
32
33        public NfcDiscoveryParameters.Builder setTechMask(int techMask) {
34            mParameters.mTechMask = techMask;
35            return this;
36        }
37
38        public NfcDiscoveryParameters.Builder setEnableLowPowerDiscovery(boolean enable) {
39            mParameters.mEnableLowPowerDiscovery = enable;
40            return this;
41        }
42
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
53        public NfcDiscoveryParameters.Builder setEnableHostRouting(boolean enable) {
54            mParameters.mEnableHostRouting = enable;
55            return this;
56        }
57
58        public NfcDiscoveryParameters.Builder setEnableP2p(boolean enable) {
59            mParameters.mEnableP2p = enable;
60            return this;
61        }
62
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
82    public NfcDiscoveryParameters() {}
83
84    public int getTechMask() {
85        return mTechMask;
86    }
87
88    public boolean shouldEnableLowPowerDiscovery() {
89        return mEnableLowPowerDiscovery;
90    }
91
92    public boolean shouldEnableReaderMode() {
93        return mEnableReaderMode;
94    }
95
96    public boolean shouldEnableHostRouting() {
97        return mEnableHostRouting;
98    }
99
100    public boolean shouldEnableDiscovery() {
101        return mTechMask != 0 || mEnableHostRouting;
102    }
103
104    public boolean shouldEnableP2p() {
105        return mEnableP2p;
106    }
107
108    @Override
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
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
140    public static NfcDiscoveryParameters.Builder newBuilder() {
141        return new Builder();
142    }
143
144    public static NfcDiscoveryParameters getDefaultInstance() {
145        return new NfcDiscoveryParameters();
146    }
147
148    public static NfcDiscoveryParameters getNfcOffParameters() {
149        return new NfcDiscoveryParameters();
150    }
151}
152