101 lines
3.6 KiB
Java
101 lines
3.6 KiB
Java
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/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* 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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.android.inputmethod.latin;
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import com.android.inputmethod.keyboard.KeyboardId;
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import android.content.Context;
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import android.text.TextUtils;
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import java.io.File;
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import java.util.Locale;
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import java.util.StringTokenizer;
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public class UserBigramSuggestHelper extends SuggestHelper {
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private final Context mContext;
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private UserBigramDictionary mUserBigram;
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public UserBigramSuggestHelper(Context context, File dictionaryPath, long startOffset,
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long length, int userBigramMax, int userBigramDelete, KeyboardId keyboardId) {
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super(context, dictionaryPath, startOffset, length, keyboardId);
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mContext = context;
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mUserBigram = new UserBigramDictionary(context, null, Locale.US.toString(),
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Suggest.DIC_USER);
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mUserBigram.setDatabaseMax(userBigramMax);
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mUserBigram.setDatabaseDelete(userBigramDelete);
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mSuggest.setCorrectionMode(Suggest.CORRECTION_FULL_BIGRAM);
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mSuggest.setUserBigramDictionary(mUserBigram);
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}
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public void changeUserBigramLocale(Locale locale) {
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if (mUserBigram != null) {
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flushUserBigrams();
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mUserBigram.close();
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mUserBigram = new UserBigramDictionary(mContext, null, locale.toString(),
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Suggest.DIC_USER);
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mSuggest.setUserBigramDictionary(mUserBigram);
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}
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}
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public int searchUserBigramSuggestion(CharSequence previous, char typed,
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CharSequence expected) {
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if (mUserBigram == null) return -1;
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flushUserBigrams();
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if (!TextUtils.isEmpty(previous) && !TextUtils.isEmpty(Character.toString(typed))) {
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WordComposer firstChar = createWordComposer(Character.toString(typed));
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mSuggest.getSuggestions(null, firstChar, previous);
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boolean reloading = mUserBigram.reloadDictionaryIfRequired();
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if (reloading) mUserBigram.waitForDictionaryLoading();
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mUserBigram.getBigrams(firstChar, previous, mSuggest, null);
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}
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for (int i = 0; i < mSuggest.mBigramSuggestions.size(); i++) {
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final CharSequence word = mSuggest.mBigramSuggestions.get(i);
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if (TextUtils.equals(word, expected))
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return i;
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}
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return -1;
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}
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public void addToUserBigram(String sentence) {
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StringTokenizer st = new StringTokenizer(sentence);
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String previous = null;
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while (st.hasMoreTokens()) {
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String current = st.nextToken();
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if (previous != null) {
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addToUserBigram(new String[] {previous, current});
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}
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previous = current;
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}
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}
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public void addToUserBigram(String[] pair) {
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if (mUserBigram != null && pair.length == 2) {
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mUserBigram.addBigrams(pair[0], pair[1]);
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}
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}
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public void flushUserBigrams() {
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if (mUserBigram != null) {
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mUserBigram.flushPendingWrites();
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mUserBigram.waitUntilUpdateDBDone();
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}
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}
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}
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