| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package android.ext.services.autofill; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.os.Bundle; |
| import android.service.autofill.AutofillFieldClassificationService; |
| import android.util.Log; |
| import android.view.autofill.AutofillValue; |
| |
| import com.android.internal.util.ArrayUtils; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| public class AutofillFieldClassificationServiceImpl extends AutofillFieldClassificationService { |
| |
| private static final String TAG = "AutofillFieldClassificationServiceImpl"; |
| private static final boolean DEBUG = false; |
| private static final List<String> sAvailableAlgorithms = Arrays.asList(EditDistanceScorer.NAME); |
| |
| @Override |
| public List<String> onGetAvailableAlgorithms() { |
| return sAvailableAlgorithms; |
| } |
| |
| @Override |
| public String onGetDefaultAlgorithm() { |
| return EditDistanceScorer.NAME; |
| } |
| |
| @Nullable |
| @Override |
| public Scores onGetScores(@Nullable String algorithmName, |
| @Nullable Bundle algorithmArgs, @NonNull List<AutofillValue> actualValues, |
| @NonNull List<String> userDataValues) { |
| if (ArrayUtils.isEmpty(actualValues) || ArrayUtils.isEmpty(userDataValues)) { |
| Log.w(TAG, "getScores(): empty currentvalues (" + actualValues + ") or userValues (" |
| + userDataValues + ")"); |
| // TODO(b/70939974): add unit test |
| return null; |
| } |
| if (algorithmName != null && !algorithmName.equals(EditDistanceScorer.NAME)) { |
| Log.w(TAG, "Ignoring invalid algorithm (" + algorithmName + ") and using " |
| + EditDistanceScorer.NAME + " instead"); |
| } |
| |
| final String actualAlgorithmName = EditDistanceScorer.NAME; |
| final int actualValuesSize = actualValues.size(); |
| final int userDataValuesSize = userDataValues.size(); |
| if (DEBUG) { |
| Log.d(TAG, "getScores() will return a " + actualValuesSize + "x" |
| + userDataValuesSize + " matrix for " + actualAlgorithmName); |
| } |
| final Scores scores = new Scores(actualAlgorithmName, actualValuesSize, userDataValuesSize); |
| final float[][] scoresMatrix = scores.getScores(); |
| |
| final EditDistanceScorer algorithm = EditDistanceScorer.getInstance(); |
| for (int i = 0; i < actualValuesSize; i++) { |
| for (int j = 0; j < userDataValuesSize; j++) { |
| final float score = algorithm.getScore(actualValues.get(i), userDataValues.get(j)); |
| scoresMatrix[i][j] = score; |
| } |
| } |
| return scores; |
| } |
| } |