2020-11-16 14:46:55 +00:00
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package eu.faircode.email;
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2020-11-16 15:03:36 +00:00
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import android.app.Person;
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2020-11-16 14:46:55 +00:00
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import android.content.Context;
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import android.os.Build;
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import android.text.TextUtils;
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2020-11-16 15:03:36 +00:00
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import android.view.textclassifier.ConversationAction;
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import android.view.textclassifier.ConversationActions;
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2020-11-16 14:46:55 +00:00
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import android.view.textclassifier.TextClassificationManager;
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import android.view.textclassifier.TextClassifier;
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import android.view.textclassifier.TextLanguage;
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2020-11-16 15:03:36 +00:00
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import java.time.ZoneId;
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import java.time.ZonedDateTime;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.Date;
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import java.util.HashSet;
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import java.util.List;
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2020-11-16 14:46:55 +00:00
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import java.util.Locale;
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2020-11-16 15:03:36 +00:00
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import java.util.Set;
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2020-11-16 14:46:55 +00:00
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public class TextHelper {
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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2021-01-01 07:56:36 +00:00
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Copyright 2018-2021 by Marcel Bokhorst (M66B)
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2020-11-16 14:46:55 +00:00
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*/
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static Locale detectLanguage(Context context, String text) {
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// Why not ML kit? https://developers.google.com/ml-kit/terms
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if (TextUtils.isEmpty(text))
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return null;
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q)
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return null;
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// https://issuetracker.google.com/issues/173337263
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TextClassificationManager tcm =
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(TextClassificationManager) context.getSystemService(Context.TEXT_CLASSIFICATION_SERVICE);
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if (tcm == null)
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return null;
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2020-11-16 15:03:36 +00:00
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TextLanguage.Request request = new TextLanguage.Request.Builder(text).build();
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2020-11-16 14:46:55 +00:00
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TextClassifier tc = tcm.getTextClassifier();
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2020-11-16 15:03:36 +00:00
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TextLanguage tlanguage = tc.detectLanguage(request);
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2020-11-16 14:46:55 +00:00
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if (tlanguage.getLocaleHypothesisCount() > 0)
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return tlanguage.getLocale(0).toLocale();
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return null;
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}
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2020-11-16 15:03:36 +00:00
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static ConversationActions getConversationActions(
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Context context, String[] texts, boolean replies, boolean outgoing, long time) {
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q)
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return null;
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TextClassificationManager tcm =
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(TextClassificationManager) context.getSystemService(Context.TEXT_CLASSIFICATION_SERVICE);
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if (tcm == null)
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return null;
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Person author = outgoing
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? ConversationActions.Message.PERSON_USER_SELF
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: ConversationActions.Message.PERSON_USER_OTHERS;
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ZonedDateTime dt = new Date(time)
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.toInstant()
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.atZone(ZoneId.systemDefault());
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List<ConversationActions.Message> input = new ArrayList<>();
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for (String text : texts)
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input.add(new ConversationActions.Message.Builder(author)
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.setReferenceTime(dt)
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.setText(text)
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.build());
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Set<String> excluded = new HashSet<>(Arrays.asList(
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ConversationAction.TYPE_OPEN_URL,
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ConversationAction.TYPE_SEND_EMAIL
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));
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if (!replies)
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excluded.add(ConversationAction.TYPE_TEXT_REPLY);
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TextClassifier.EntityConfig config =
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new TextClassifier.EntityConfig.Builder()
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.setExcludedTypes(excluded)
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.build();
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List<String> hints = Collections.unmodifiableList(Arrays.asList(
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ConversationActions.Request.HINT_FOR_IN_APP
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));
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ConversationActions.Request request =
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new ConversationActions.Request.Builder(input)
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.setTypeConfig(config)
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.setHints(hints)
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.build();
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return tcm.getTextClassifier().suggestConversationActions(request);
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}
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2020-11-16 14:46:55 +00:00
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}
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