1 /* 2 * Copyright (C) 2017 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.settings.fingerprint; 18 19 import android.annotation.Nullable; 20 import android.content.Context; 21 import android.hardware.fingerprint.Fingerprint; 22 import android.hardware.fingerprint.FingerprintManager; 23 import android.os.Bundle; 24 import com.android.settings.core.InstrumentedPreferenceFragment; 25 import com.android.internal.logging.nano.MetricsProto.MetricsEvent; 26 import android.os.UserHandle; 27 import java.util.Queue; 28 import java.util.LinkedList; 29 import android.util.Log; 30 31 /** 32 * Sidecar fragment to handle the state around fingerprint removal. 33 */ 34 public class FingerprintRemoveSidecar extends InstrumentedPreferenceFragment { 35 36 private static final String TAG = "FingerprintRemoveSidecar"; 37 private Listener mListener; 38 private Fingerprint mFingerprintRemoving; 39 private Queue<Object> mFingerprintsRemoved; 40 FingerprintManager mFingerprintManager; 41 42 private class RemovalError { 43 Fingerprint fingerprint; 44 int errMsgId; 45 CharSequence errString; RemovalError(Fingerprint fingerprint, int errMsgId, CharSequence errString)46 public RemovalError(Fingerprint fingerprint, int errMsgId, CharSequence errString) { 47 this.fingerprint = fingerprint; 48 this.errMsgId = errMsgId; 49 this.errString = errString; 50 } 51 } 52 53 private FingerprintManager.RemovalCallback 54 mRemoveCallback = new FingerprintManager.RemovalCallback() { 55 @Override 56 public void onRemovalSucceeded(Fingerprint fingerprint, int remaining) { 57 if (mListener != null) { 58 mListener.onRemovalSucceeded(fingerprint); 59 } else { 60 mFingerprintsRemoved.add(fingerprint); 61 }; 62 mFingerprintRemoving = null; 63 } 64 65 @Override 66 public void onRemovalError(Fingerprint fp, int errMsgId, CharSequence errString) { 67 if (mListener != null) { 68 mListener.onRemovalError(fp, errMsgId, errString); 69 } else { 70 mFingerprintsRemoved.add(new RemovalError(fp, errMsgId, errString)); 71 } 72 mFingerprintRemoving = null; 73 } 74 }; 75 startRemove(Fingerprint fingerprint, int userId)76 public void startRemove(Fingerprint fingerprint, int userId) { 77 if (mFingerprintRemoving != null) { 78 Log.e(TAG, "Remove already in progress"); 79 return; 80 } 81 if (userId != UserHandle.USER_NULL) { 82 mFingerprintManager.setActiveUser(userId); 83 } 84 mFingerprintRemoving = fingerprint; 85 mFingerprintManager.remove(fingerprint, userId, mRemoveCallback);; 86 } 87 FingerprintRemoveSidecar()88 public FingerprintRemoveSidecar() { 89 mFingerprintsRemoved = new LinkedList<>(); 90 } 91 setFingerprintManager(FingerprintManager fingerprintManager)92 public void setFingerprintManager(FingerprintManager fingerprintManager) { 93 mFingerprintManager = fingerprintManager; 94 } 95 96 @Override onCreate(@ullable Bundle savedInstanceState)97 public void onCreate(@Nullable Bundle savedInstanceState) { 98 super.onCreate(savedInstanceState); 99 setRetainInstance(true); 100 } 101 102 @Override onAttach(Context context)103 public void onAttach(Context context) { 104 super.onAttach(context); 105 } 106 107 @Override onResume()108 public void onResume() { 109 super.onResume(); 110 } 111 112 @Override onCreatePreferences(Bundle savedInstanceState, String rootKey)113 public void onCreatePreferences(Bundle savedInstanceState, String rootKey) { 114 } 115 setListener(Listener listener)116 public void setListener(Listener listener) { 117 if (mListener == null && listener != null) { 118 while (!mFingerprintsRemoved.isEmpty()) { 119 Object o = mFingerprintsRemoved.poll(); 120 if (o instanceof Fingerprint) { 121 listener.onRemovalSucceeded((Fingerprint)o); 122 } else if (o instanceof RemovalError) { 123 RemovalError e = (RemovalError) o; 124 listener.onRemovalError(e.fingerprint, e.errMsgId, e.errString); 125 } 126 } 127 } 128 mListener = listener; 129 } 130 131 public interface Listener { onRemovalSucceeded(Fingerprint fingerprint)132 void onRemovalSucceeded(Fingerprint fingerprint); onRemovalError(Fingerprint fp, int errMsgId, CharSequence errString)133 void onRemovalError(Fingerprint fp, int errMsgId, CharSequence errString); 134 } 135 isRemovingFingerprint(int fid)136 final boolean isRemovingFingerprint(int fid) { 137 return inProgress() && mFingerprintRemoving.getFingerId() == fid; 138 } 139 inProgress()140 final boolean inProgress() { 141 return mFingerprintRemoving != null; 142 } 143 144 @Override getMetricsCategory()145 public int getMetricsCategory() { 146 return MetricsEvent.FINGERPRINT_REMOVE_SIDECAR; 147 } 148 149 } 150