| /* |
| * Copyright (C) 2019 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.view.textclassifier; |
| |
| import android.annotation.Nullable; |
| import android.app.RemoteAction; |
| import android.content.Intent; |
| import android.icu.util.ULocale; |
| import android.os.Bundle; |
| |
| import com.android.internal.util.ArrayUtils; |
| |
| import com.google.android.textclassifier.AnnotatorModel; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Utility class for inserting and retrieving data in TextClassifier request/response extras. |
| * @hide |
| */ |
| // TODO: Make this a TestApi for CTS testing. |
| public final class ExtrasUtils { |
| |
| // Keys for response objects. |
| private static final String SERIALIZED_ENTITIES_DATA = "serialized-entities-data"; |
| private static final String ENTITIES_EXTRAS = "entities-extras"; |
| private static final String ACTION_INTENT = "action-intent"; |
| private static final String ACTIONS_INTENTS = "actions-intents"; |
| private static final String FOREIGN_LANGUAGE = "foreign-language"; |
| private static final String ENTITY_TYPE = "entity-type"; |
| private static final String SCORE = "score"; |
| private static final String MODEL_VERSION = "model-version"; |
| private static final String MODEL_NAME = "model-name"; |
| private static final String TEXT_LANGUAGES = "text-languages"; |
| private static final String ENTITIES = "entities"; |
| |
| // Keys for request objects. |
| private static final String IS_SERIALIZED_ENTITY_DATA_ENABLED = |
| "is-serialized-entity-data-enabled"; |
| |
| private ExtrasUtils() {} |
| |
| /** |
| * Bundles and returns foreign language detection information for TextClassifier responses. |
| */ |
| static Bundle createForeignLanguageExtra( |
| String language, float score, int modelVersion) { |
| final Bundle bundle = new Bundle(); |
| bundle.putString(ENTITY_TYPE, language); |
| bundle.putFloat(SCORE, score); |
| bundle.putInt(MODEL_VERSION, modelVersion); |
| bundle.putString(MODEL_NAME, "langId_v" + modelVersion); |
| return bundle; |
| } |
| |
| /** |
| * Stores {@code extra} as foreign language information in TextClassifier response object's |
| * extras {@code container}. |
| * |
| * @see #getForeignLanguageExtra(TextClassification) |
| */ |
| static void putForeignLanguageExtra(Bundle container, Bundle extra) { |
| container.putParcelable(FOREIGN_LANGUAGE, extra); |
| } |
| |
| /** |
| * Returns foreign language detection information contained in the TextClassification object. |
| * responses. |
| * |
| * @see #putForeignLanguageExtra(Bundle, Bundle) |
| */ |
| @Nullable |
| public static Bundle getForeignLanguageExtra(@Nullable TextClassification classification) { |
| if (classification == null) { |
| return null; |
| } |
| return classification.getExtras().getBundle(FOREIGN_LANGUAGE); |
| } |
| |
| /** |
| * @see #getTopLanguage(Intent) |
| */ |
| static void putTopLanguageScores(Bundle container, EntityConfidence languageScores) { |
| final int maxSize = Math.min(3, languageScores.getEntities().size()); |
| final String[] languages = languageScores.getEntities().subList(0, maxSize) |
| .toArray(new String[0]); |
| final float[] scores = new float[languages.length]; |
| for (int i = 0; i < languages.length; i++) { |
| scores[i] = languageScores.getConfidenceScore(languages[i]); |
| } |
| container.putStringArray(ENTITY_TYPE, languages); |
| container.putFloatArray(SCORE, scores); |
| } |
| |
| /** |
| * @see #putTopLanguageScores(Bundle, EntityConfidence) |
| */ |
| @Nullable |
| public static ULocale getTopLanguage(@Nullable Intent intent) { |
| if (intent == null) { |
| return null; |
| } |
| final Bundle tcBundle = intent.getBundleExtra(TextClassifier.EXTRA_FROM_TEXT_CLASSIFIER); |
| if (tcBundle == null) { |
| return null; |
| } |
| final Bundle textLanguagesExtra = tcBundle.getBundle(TEXT_LANGUAGES); |
| if (textLanguagesExtra == null) { |
| return null; |
| } |
| final String[] languages = textLanguagesExtra.getStringArray(ENTITY_TYPE); |
| final float[] scores = textLanguagesExtra.getFloatArray(SCORE); |
| if (languages == null || scores == null |
| || languages.length == 0 || languages.length != scores.length) { |
| return null; |
| } |
| int highestScoringIndex = 0; |
| for (int i = 1; i < languages.length; i++) { |
| if (scores[highestScoringIndex] < scores[i]) { |
| highestScoringIndex = i; |
| } |
| } |
| return ULocale.forLanguageTag(languages[highestScoringIndex]); |
| } |
| |
| public static void putTextLanguagesExtra(Bundle container, Bundle extra) { |
| container.putBundle(TEXT_LANGUAGES, extra); |
| } |
| |
| /** |
| * Stores {@code actionIntents} information in TextClassifier response object's extras |
| * {@code container}. |
| */ |
| static void putActionsIntents(Bundle container, ArrayList<Intent> actionsIntents) { |
| container.putParcelableArrayList(ACTIONS_INTENTS, actionsIntents); |
| } |
| |
| /** |
| * Stores {@code actionIntents} information in TextClassifier response object's extras |
| * {@code container}. |
| */ |
| public static void putActionIntent(Bundle container, @Nullable Intent actionIntent) { |
| container.putParcelable(ACTION_INTENT, actionIntent); |
| } |
| |
| /** |
| * Returns {@code actionIntent} information contained in a TextClassifier response object. |
| */ |
| @Nullable |
| public static Intent getActionIntent(Bundle container) { |
| return container.getParcelable(ACTION_INTENT); |
| } |
| |
| /** |
| * Stores serialized entity data information in TextClassifier response object's extras |
| * {@code container}. |
| */ |
| public static void putSerializedEntityData( |
| Bundle container, @Nullable byte[] serializedEntityData) { |
| container.putByteArray(SERIALIZED_ENTITIES_DATA, serializedEntityData); |
| } |
| |
| /** |
| * Returns serialized entity data information contained in a TextClassifier response |
| * object. |
| */ |
| @Nullable |
| public static byte[] getSerializedEntityData(Bundle container) { |
| return container.getByteArray(SERIALIZED_ENTITIES_DATA); |
| } |
| |
| /** |
| * Stores {@code entities} information in TextClassifier response object's extras |
| * {@code container}. |
| * |
| * @see {@link #getCopyText(Bundle)} |
| */ |
| public static void putEntitiesExtras(Bundle container, @Nullable Bundle entitiesExtras) { |
| container.putParcelable(ENTITIES_EXTRAS, entitiesExtras); |
| } |
| |
| /** |
| * Returns {@code entities} information contained in a TextClassifier response object. |
| * |
| * @see {@link #putEntitiesExtras(Bundle, Bundle)} |
| */ |
| @Nullable |
| public static String getCopyText(Bundle container) { |
| Bundle entitiesExtras = container.getParcelable(ENTITIES_EXTRAS); |
| if (entitiesExtras == null) { |
| return null; |
| } |
| return entitiesExtras.getString("text"); |
| } |
| |
| /** |
| * Returns {@code actionIntents} information contained in the TextClassification object. |
| */ |
| @Nullable |
| public static ArrayList<Intent> getActionsIntents(@Nullable TextClassification classification) { |
| if (classification == null) { |
| return null; |
| } |
| return classification.getExtras().getParcelableArrayList(ACTIONS_INTENTS); |
| } |
| |
| /** |
| * Returns the first action found in the {@code classification} object with an intent |
| * action string, {@code intentAction}. |
| */ |
| @Nullable |
| public static RemoteAction findAction( |
| @Nullable TextClassification classification, @Nullable String intentAction) { |
| if (classification == null || intentAction == null) { |
| return null; |
| } |
| final ArrayList<Intent> actionIntents = getActionsIntents(classification); |
| if (actionIntents != null) { |
| final int size = actionIntents.size(); |
| for (int i = 0; i < size; i++) { |
| final Intent intent = actionIntents.get(i); |
| if (intent != null && intentAction.equals(intent.getAction())) { |
| return classification.getActions().get(i); |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the first "translate" action found in the {@code classification} object. |
| */ |
| @Nullable |
| public static RemoteAction findTranslateAction(@Nullable TextClassification classification) { |
| return findAction(classification, Intent.ACTION_TRANSLATE); |
| } |
| |
| /** |
| * Returns the entity type contained in the {@code extra}. |
| */ |
| @Nullable |
| public static String getEntityType(@Nullable Bundle extra) { |
| if (extra == null) { |
| return null; |
| } |
| return extra.getString(ENTITY_TYPE); |
| } |
| |
| /** |
| * Returns the score contained in the {@code extra}. |
| */ |
| @Nullable |
| public static float getScore(Bundle extra) { |
| final int defaultValue = -1; |
| if (extra == null) { |
| return defaultValue; |
| } |
| return extra.getFloat(SCORE, defaultValue); |
| } |
| |
| /** |
| * Returns the model name contained in the {@code extra}. |
| */ |
| @Nullable |
| public static String getModelName(@Nullable Bundle extra) { |
| if (extra == null) { |
| return null; |
| } |
| return extra.getString(MODEL_NAME); |
| } |
| |
| /** |
| * Stores the entities from {@link AnnotatorModel.ClassificationResult} in {@code container}. |
| */ |
| public static void putEntities( |
| Bundle container, |
| @Nullable AnnotatorModel.ClassificationResult[] classifications) { |
| if (ArrayUtils.isEmpty(classifications)) { |
| return; |
| } |
| ArrayList<Bundle> entitiesBundle = new ArrayList<>(); |
| for (AnnotatorModel.ClassificationResult classification : classifications) { |
| if (classification == null) { |
| continue; |
| } |
| Bundle entityBundle = new Bundle(); |
| entityBundle.putString(ENTITY_TYPE, classification.getCollection()); |
| entityBundle.putByteArray( |
| SERIALIZED_ENTITIES_DATA, |
| classification.getSerializedEntityData()); |
| entitiesBundle.add(entityBundle); |
| } |
| if (!entitiesBundle.isEmpty()) { |
| container.putParcelableArrayList(ENTITIES, entitiesBundle); |
| } |
| } |
| |
| /** |
| * Returns a list of entities contained in the {@code extra}. |
| */ |
| @Nullable |
| public static List<Bundle> getEntities(Bundle container) { |
| return container.getParcelableArrayList(ENTITIES); |
| } |
| |
| /** |
| * Whether the annotator should populate serialized entity data into the result object. |
| */ |
| public static boolean isSerializedEntityDataEnabled(TextLinks.Request request) { |
| return request.getExtras().getBoolean(IS_SERIALIZED_ENTITY_DATA_ENABLED); |
| } |
| |
| /** |
| * To indicate whether the annotator should populate serialized entity data in the result |
| * object. |
| */ |
| public static void putIsSerializedEntityDataEnabled(Bundle bundle, boolean isEnabled) { |
| bundle.putBoolean(IS_SERIALIZED_ENTITY_DATA_ENABLED, isEnabled); |
| } |
| } |