Merge "Make DistracterFilter interface."
This commit is contained in:
Keisuke Kuroyanagi
Android (Google) Code Review
commit
85befc0873
5 changed files with 250 additions and 202 deletions
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@ -169,7 +169,7 @@ public class DictionaryFacilitator {
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}
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public DictionaryFacilitator() {
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mDistracterFilter = new DistracterFilter();
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mDistracterFilter = new DistracterFilter.EmptyDistracterFilter();
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}
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public DictionaryFacilitator(final DistracterFilter distracterFilter) {
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@ -84,7 +84,7 @@ import com.android.inputmethod.latin.utils.CapsModeUtils;
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import com.android.inputmethod.latin.utils.CollectionUtils;
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import com.android.inputmethod.latin.utils.CoordinateUtils;
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import com.android.inputmethod.latin.utils.DialogUtils;
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import com.android.inputmethod.latin.utils.DistracterFilter;
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import com.android.inputmethod.latin.utils.DistracterFilterUsingSuggestion;
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import com.android.inputmethod.latin.utils.ImportantNoticeUtils;
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import com.android.inputmethod.latin.utils.IntentUtils;
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import com.android.inputmethod.latin.utils.JniUtils;
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@ -125,7 +125,7 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
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private final Settings mSettings;
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private final DictionaryFacilitator mDictionaryFacilitator =
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new DictionaryFacilitator(new DistracterFilter(this /* context */));
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new DictionaryFacilitator(new DistracterFilterUsingSuggestion(this /* context */));
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private final InputLogic mInputLogic = new InputLogic(this /* LatinIME */,
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this /* SuggestionStripViewAccessor */, mDictionaryFacilitator);
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// We expect to have only one decoder in almost all cases, hence the default capacity of 1.
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@ -16,159 +16,14 @@
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package com.android.inputmethod.latin.utils;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map;
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import java.util.concurrent.TimeUnit;
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import android.content.Context;
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import android.content.res.Resources;
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import android.text.InputType;
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import android.util.Log;
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import android.view.inputmethod.EditorInfo;
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import android.view.inputmethod.InputMethodSubtype;
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import com.android.inputmethod.keyboard.Keyboard;
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import com.android.inputmethod.keyboard.KeyboardId;
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import com.android.inputmethod.keyboard.KeyboardLayoutSet;
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import com.android.inputmethod.latin.Constants;
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import com.android.inputmethod.latin.DictionaryFacilitator;
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import com.android.inputmethod.latin.PrevWordsInfo;
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import com.android.inputmethod.latin.Suggest;
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import com.android.inputmethod.latin.Suggest.OnGetSuggestedWordsCallback;
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import com.android.inputmethod.latin.SuggestedWords;
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import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
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import com.android.inputmethod.latin.WordComposer;
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/**
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* This class is used to prevent distracters being added to personalization
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* or user history dictionaries
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*/
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public class DistracterFilter {
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private static final String TAG = DistracterFilter.class.getSimpleName();
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private static final long TIMEOUT_TO_WAIT_LOADING_DICTIONARIES_IN_SECONDS = 120;
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private final Context mContext;
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private final Map<Locale, InputMethodSubtype> mLocaleToSubtypeMap;
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private final Map<Locale, Keyboard> mLocaleToKeyboardMap;
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private final DictionaryFacilitator mDictionaryFacilitator;
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private final Suggest mSuggest;
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private Keyboard mKeyboard;
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private final Object mLock = new Object();
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// If the score of the top suggestion exceeds this value, the tested word (e.g.,
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// an OOV, a misspelling, or an in-vocabulary word) would be considered as a distracter to
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// words in dictionary. The greater the threshold is, the less likely the tested word would
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// become a distracter, which means the tested word will be more likely to be added to
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// the dictionary.
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private static final float DISTRACTER_WORD_SCORE_THRESHOLD = 2.0f;
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// Create empty distracter filter.
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public DistracterFilter() {
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mContext = null;
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mLocaleToSubtypeMap = new HashMap<>();
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mLocaleToKeyboardMap = new HashMap<>();
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// TODO: Quit assigning null.
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mDictionaryFacilitator = null;
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mSuggest = null;
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mKeyboard = null;
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}
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/**
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* Create a DistracterFilter instance.
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*
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* @param context the context.
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*/
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public DistracterFilter(final Context context) {
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mContext = context;
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mLocaleToSubtypeMap = new HashMap<>();
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mLocaleToKeyboardMap = new HashMap<>();
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mDictionaryFacilitator = new DictionaryFacilitator();
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mSuggest = new Suggest(mDictionaryFacilitator);
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mKeyboard = null;
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}
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public void close() {
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if (mDictionaryFacilitator != null) {
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mDictionaryFacilitator.closeDictionaries();
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}
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}
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public void updateEnabledSubtypes(final List<InputMethodSubtype> enabledSubtypes) {
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final Map<Locale, InputMethodSubtype> newLocaleToSubtypeMap = new HashMap<>();
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if (enabledSubtypes != null) {
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for (final InputMethodSubtype subtype : enabledSubtypes) {
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final Locale locale = SubtypeLocaleUtils.getSubtypeLocale(subtype);
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if (newLocaleToSubtypeMap.containsKey(locale)) {
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// Multiple subtypes are enabled for one locale.
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// TODO: Investigate what we should do for this case.
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continue;
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}
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newLocaleToSubtypeMap.put(locale, subtype);
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}
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}
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if (mLocaleToSubtypeMap.equals(newLocaleToSubtypeMap)) {
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// Enabled subtypes have not been changed.
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return;
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}
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synchronized (mLock) {
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mLocaleToSubtypeMap.clear();
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mLocaleToSubtypeMap.putAll(newLocaleToSubtypeMap);
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mLocaleToKeyboardMap.clear();
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}
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}
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private static boolean suggestionExceedsDistracterThreshold(
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final SuggestedWordInfo suggestion, final String consideredWord,
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final float distracterThreshold) {
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if (null != suggestion) {
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final int suggestionScore = suggestion.mScore;
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final float normalizedScore = BinaryDictionaryUtils.calcNormalizedScore(
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consideredWord, suggestion.mWord, suggestionScore);
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if (normalizedScore > distracterThreshold) {
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return true;
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}
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}
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return false;
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}
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private void loadKeyboardForLocale(final Locale newLocale) {
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final Keyboard cachedKeyboard = mLocaleToKeyboardMap.get(newLocale);
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if (cachedKeyboard != null) {
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mKeyboard = cachedKeyboard;
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return;
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}
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final InputMethodSubtype subtype;
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synchronized (mLock) {
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subtype = mLocaleToSubtypeMap.get(newLocale);
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}
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if (subtype == null) {
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return;
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}
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final EditorInfo editorInfo = new EditorInfo();
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editorInfo.inputType = InputType.TYPE_CLASS_TEXT;
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final KeyboardLayoutSet.Builder builder = new KeyboardLayoutSet.Builder(
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mContext, editorInfo);
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final Resources res = mContext.getResources();
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final int keyboardWidth = ResourceUtils.getDefaultKeyboardWidth(res);
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final int keyboardHeight = ResourceUtils.getDefaultKeyboardHeight(res);
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builder.setKeyboardGeometry(keyboardWidth, keyboardHeight);
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builder.setSubtype(subtype);
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builder.setIsSpellChecker(false /* isSpellChecker */);
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final KeyboardLayoutSet layoutSet = builder.build();
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mKeyboard = layoutSet.getKeyboard(KeyboardId.ELEMENT_ALPHABET);
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}
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private void loadDictionariesForLocale(final Locale newlocale) throws InterruptedException {
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mDictionaryFacilitator.resetDictionaries(mContext, newlocale,
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false /* useContactsDict */, false /* usePersonalizedDicts */,
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false /* forceReloadMainDictionary */, null /* listener */);
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mDictionaryFacilitator.waitForLoadingMainDictionary(
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TIMEOUT_TO_WAIT_LOADING_DICTIONARIES_IN_SECONDS, TimeUnit.SECONDS);
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}
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public interface DistracterFilter {
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/**
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* Determine whether a word is a distracter to words in dictionaries.
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*
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@ -179,59 +34,25 @@ public class DistracterFilter {
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* @return true if testedWord is a distracter, otherwise false.
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*/
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public boolean isDistracterToWordsInDictionaries(final PrevWordsInfo prevWordsInfo,
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final String testedWord, final Locale locale) {
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if (mSuggest == null || locale == null) {
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final String testedWord, final Locale locale);
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public void updateEnabledSubtypes(final List<InputMethodSubtype> enabledSubtypes);
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public void close();
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public static final class EmptyDistracterFilter implements DistracterFilter {
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@Override
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public boolean isDistracterToWordsInDictionaries(PrevWordsInfo prevWordsInfo,
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String testedWord, Locale locale) {
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return false;
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}
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if (!locale.equals(mDictionaryFacilitator.getLocale())) {
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synchronized (mLock) {
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if (!mLocaleToSubtypeMap.containsKey(locale)) {
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Log.e(TAG, "Locale " + locale + " is not enabled.");
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// TODO: Investigate what we should do for disabled locales.
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return false;
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}
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loadKeyboardForLocale(locale);
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// Reset dictionaries for the locale.
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try {
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loadDictionariesForLocale(locale);
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} catch (final InterruptedException e) {
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Log.e(TAG, "Interrupted while waiting for loading dicts in DistracterFilter",
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e);
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return false;
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}
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}
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}
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if (mKeyboard == null) {
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return false;
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}
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final WordComposer composer = new WordComposer();
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final int[] codePoints = StringUtils.toCodePointArray(testedWord);
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final int[] coordinates = mKeyboard.getCoordinates(codePoints);
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composer.setComposingWord(codePoints, coordinates, prevWordsInfo);
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final int trailingSingleQuotesCount = StringUtils.getTrailingSingleQuotesCount(testedWord);
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final String consideredWord = trailingSingleQuotesCount > 0 ?
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testedWord.substring(0, testedWord.length() - trailingSingleQuotesCount) :
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testedWord;
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final AsyncResultHolder<Boolean> holder = new AsyncResultHolder<Boolean>();
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final OnGetSuggestedWordsCallback callback = new OnGetSuggestedWordsCallback() {
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@Override
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public void onGetSuggestedWords(final SuggestedWords suggestedWords) {
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if (suggestedWords != null && suggestedWords.size() > 1) {
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// The suggestedWordInfo at 0 is the typed word. The 1st suggestion from
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// the decoder is at index 1.
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final SuggestedWordInfo firstSuggestion = suggestedWords.getInfo(1);
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final boolean hasStrongDistractor = suggestionExceedsDistracterThreshold(
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firstSuggestion, consideredWord, DISTRACTER_WORD_SCORE_THRESHOLD);
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holder.set(hasStrongDistractor);
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}
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}
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};
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mSuggest.getSuggestedWords(composer, prevWordsInfo, mKeyboard.getProximityInfo(),
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true /* blockOffensiveWords */, true /* isCorrectionEnbaled */,
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null /* additionalFeaturesOptions */, 0 /* sessionId */,
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SuggestedWords.NOT_A_SEQUENCE_NUMBER, callback);
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@Override
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public void close() {
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}
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return holder.get(false /* defaultValue */, Constants.GET_SUGGESTED_WORDS_TIMEOUT);
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@Override
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public void updateEnabledSubtypes(List<InputMethodSubtype> enabledSubtypes) {
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}
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}
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}
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@ -0,0 +1,227 @@
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/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.latin.utils;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map;
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import java.util.concurrent.TimeUnit;
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import android.content.Context;
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import android.content.res.Resources;
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import android.text.InputType;
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import android.util.Log;
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import android.view.inputmethod.EditorInfo;
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import android.view.inputmethod.InputMethodSubtype;
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import com.android.inputmethod.keyboard.Keyboard;
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import com.android.inputmethod.keyboard.KeyboardId;
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import com.android.inputmethod.keyboard.KeyboardLayoutSet;
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import com.android.inputmethod.latin.Constants;
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import com.android.inputmethod.latin.DictionaryFacilitator;
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import com.android.inputmethod.latin.PrevWordsInfo;
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import com.android.inputmethod.latin.Suggest;
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import com.android.inputmethod.latin.Suggest.OnGetSuggestedWordsCallback;
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import com.android.inputmethod.latin.SuggestedWords;
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import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
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import com.android.inputmethod.latin.WordComposer;
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/**
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* This class is used to prevent distracters being added to personalization
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* or user history dictionaries
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*/
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public class DistracterFilterUsingSuggestion implements DistracterFilter {
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private static final String TAG = DistracterFilterUsingSuggestion.class.getSimpleName();
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private static final long TIMEOUT_TO_WAIT_LOADING_DICTIONARIES_IN_SECONDS = 120;
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private final Context mContext;
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private final Map<Locale, InputMethodSubtype> mLocaleToSubtypeMap;
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private final Map<Locale, Keyboard> mLocaleToKeyboardMap;
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private final DictionaryFacilitator mDictionaryFacilitator;
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private final Suggest mSuggest;
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private Keyboard mKeyboard;
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private final Object mLock = new Object();
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// If the score of the top suggestion exceeds this value, the tested word (e.g.,
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// an OOV, a misspelling, or an in-vocabulary word) would be considered as a distracter to
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// words in dictionary. The greater the threshold is, the less likely the tested word would
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// become a distracter, which means the tested word will be more likely to be added to
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// the dictionary.
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private static final float DISTRACTER_WORD_SCORE_THRESHOLD = 2.0f;
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/**
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* Create a DistracterFilter instance.
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*
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* @param context the context.
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*/
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public DistracterFilterUsingSuggestion(final Context context) {
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mContext = context;
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mLocaleToSubtypeMap = new HashMap<>();
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mLocaleToKeyboardMap = new HashMap<>();
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mDictionaryFacilitator = new DictionaryFacilitator();
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mSuggest = new Suggest(mDictionaryFacilitator);
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mKeyboard = null;
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}
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@Override
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public void close() {
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mDictionaryFacilitator.closeDictionaries();
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}
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@Override
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public void updateEnabledSubtypes(final List<InputMethodSubtype> enabledSubtypes) {
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final Map<Locale, InputMethodSubtype> newLocaleToSubtypeMap = new HashMap<>();
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if (enabledSubtypes != null) {
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for (final InputMethodSubtype subtype : enabledSubtypes) {
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final Locale locale = SubtypeLocaleUtils.getSubtypeLocale(subtype);
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if (newLocaleToSubtypeMap.containsKey(locale)) {
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// Multiple subtypes are enabled for one locale.
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// TODO: Investigate what we should do for this case.
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continue;
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}
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newLocaleToSubtypeMap.put(locale, subtype);
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}
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}
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if (mLocaleToSubtypeMap.equals(newLocaleToSubtypeMap)) {
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// Enabled subtypes have not been changed.
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return;
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}
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synchronized (mLock) {
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mLocaleToSubtypeMap.clear();
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mLocaleToSubtypeMap.putAll(newLocaleToSubtypeMap);
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mLocaleToKeyboardMap.clear();
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}
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}
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private static boolean suggestionExceedsDistracterThreshold(
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final SuggestedWordInfo suggestion, final String consideredWord,
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final float distracterThreshold) {
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if (null != suggestion) {
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final int suggestionScore = suggestion.mScore;
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final float normalizedScore = BinaryDictionaryUtils.calcNormalizedScore(
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consideredWord, suggestion.mWord, suggestionScore);
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if (normalizedScore > distracterThreshold) {
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return true;
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}
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}
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return false;
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}
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private void loadKeyboardForLocale(final Locale newLocale) {
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final Keyboard cachedKeyboard = mLocaleToKeyboardMap.get(newLocale);
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if (cachedKeyboard != null) {
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mKeyboard = cachedKeyboard;
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return;
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}
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final InputMethodSubtype subtype;
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synchronized (mLock) {
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subtype = mLocaleToSubtypeMap.get(newLocale);
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}
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if (subtype == null) {
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return;
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}
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final EditorInfo editorInfo = new EditorInfo();
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editorInfo.inputType = InputType.TYPE_CLASS_TEXT;
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final KeyboardLayoutSet.Builder builder = new KeyboardLayoutSet.Builder(
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mContext, editorInfo);
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final Resources res = mContext.getResources();
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final int keyboardWidth = ResourceUtils.getDefaultKeyboardWidth(res);
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final int keyboardHeight = ResourceUtils.getDefaultKeyboardHeight(res);
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builder.setKeyboardGeometry(keyboardWidth, keyboardHeight);
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builder.setSubtype(subtype);
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builder.setIsSpellChecker(false /* isSpellChecker */);
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final KeyboardLayoutSet layoutSet = builder.build();
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mKeyboard = layoutSet.getKeyboard(KeyboardId.ELEMENT_ALPHABET);
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}
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private void loadDictionariesForLocale(final Locale newlocale) throws InterruptedException {
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mDictionaryFacilitator.resetDictionaries(mContext, newlocale,
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false /* useContactsDict */, false /* usePersonalizedDicts */,
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false /* forceReloadMainDictionary */, null /* listener */);
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mDictionaryFacilitator.waitForLoadingMainDictionary(
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TIMEOUT_TO_WAIT_LOADING_DICTIONARIES_IN_SECONDS, TimeUnit.SECONDS);
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}
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/**
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* Determine whether a word is a distracter to words in dictionaries.
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*
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* @param prevWordsInfo the information of previous words.
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* @param testedWord the word that will be tested to see whether it is a distracter to words
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* in dictionaries.
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* @param locale the locale of word.
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* @return true if testedWord is a distracter, otherwise false.
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*/
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@Override
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public boolean isDistracterToWordsInDictionaries(final PrevWordsInfo prevWordsInfo,
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final String testedWord, final Locale locale) {
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if (locale == null) {
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return false;
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}
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if (!locale.equals(mDictionaryFacilitator.getLocale())) {
|
||||
synchronized (mLock) {
|
||||
if (!mLocaleToSubtypeMap.containsKey(locale)) {
|
||||
Log.e(TAG, "Locale " + locale + " is not enabled.");
|
||||
// TODO: Investigate what we should do for disabled locales.
|
||||
return false;
|
||||
}
|
||||
loadKeyboardForLocale(locale);
|
||||
// Reset dictionaries for the locale.
|
||||
try {
|
||||
loadDictionariesForLocale(locale);
|
||||
} catch (final InterruptedException e) {
|
||||
Log.e(TAG, "Interrupted while waiting for loading dicts in DistracterFilter",
|
||||
e);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (mKeyboard == null) {
|
||||
return false;
|
||||
}
|
||||
final WordComposer composer = new WordComposer();
|
||||
final int[] codePoints = StringUtils.toCodePointArray(testedWord);
|
||||
final int[] coordinates = mKeyboard.getCoordinates(codePoints);
|
||||
composer.setComposingWord(codePoints, coordinates, prevWordsInfo);
|
||||
|
||||
final int trailingSingleQuotesCount = StringUtils.getTrailingSingleQuotesCount(testedWord);
|
||||
final String consideredWord = trailingSingleQuotesCount > 0 ?
|
||||
testedWord.substring(0, testedWord.length() - trailingSingleQuotesCount) :
|
||||
testedWord;
|
||||
final AsyncResultHolder<Boolean> holder = new AsyncResultHolder<Boolean>();
|
||||
final OnGetSuggestedWordsCallback callback = new OnGetSuggestedWordsCallback() {
|
||||
@Override
|
||||
public void onGetSuggestedWords(final SuggestedWords suggestedWords) {
|
||||
if (suggestedWords != null && suggestedWords.size() > 1) {
|
||||
// The suggestedWordInfo at 0 is the typed word. The 1st suggestion from
|
||||
// the decoder is at index 1.
|
||||
final SuggestedWordInfo firstSuggestion = suggestedWords.getInfo(1);
|
||||
final boolean hasStrongDistractor = suggestionExceedsDistracterThreshold(
|
||||
firstSuggestion, consideredWord, DISTRACTER_WORD_SCORE_THRESHOLD);
|
||||
holder.set(hasStrongDistractor);
|
||||
}
|
||||
}
|
||||
};
|
||||
mSuggest.getSuggestedWords(composer, prevWordsInfo, mKeyboard.getProximityInfo(),
|
||||
true /* blockOffensiveWords */, true /* isCorrectionEnbaled */,
|
||||
null /* additionalFeaturesOptions */, 0 /* sessionId */,
|
||||
SuggestedWords.NOT_A_SEQUENCE_NUMBER, callback);
|
||||
|
||||
return holder.get(false /* defaultValue */, Constants.GET_SUGGESTED_WORDS_TIMEOUT);
|
||||
}
|
||||
}
|
||||
|
|
@ -20,19 +20,19 @@ import java.util.Locale;
|
|||
|
||||
import android.test.suitebuilder.annotation.LargeTest;
|
||||
|
||||
import com.android.inputmethod.latin.utils.DistracterFilter;
|
||||
import com.android.inputmethod.latin.utils.DistracterFilterUsingSuggestion;
|
||||
|
||||
/**
|
||||
* Unit test for DistracterFilter
|
||||
*/
|
||||
@LargeTest
|
||||
public class DistracterFilterTest extends InputTestsBase {
|
||||
private DistracterFilter mDistracterFilter;
|
||||
private DistracterFilterUsingSuggestion mDistracterFilter;
|
||||
|
||||
@Override
|
||||
protected void setUp() throws Exception {
|
||||
super.setUp();
|
||||
mDistracterFilter = new DistracterFilter(getContext());
|
||||
mDistracterFilter = new DistracterFilterUsingSuggestion(getContext());
|
||||
mDistracterFilter.updateEnabledSubtypes(mLatinIME.getEnabledSubtypesForTest());
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue