PrevWordsInfo.java revision 1adca93381d261a6070be2721dbf8b8abafbfe01 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.inputmethod.latin;
18
19import android.util.Log;
20
21// TODO: Support multiple previous words for n-gram.
22public class PrevWordsInfo {
23    public static final PrevWordsInfo BEGINNING_OF_SENTENCE = new PrevWordsInfo();
24
25    // The previous word. May be null after resetting and before starting a new composing word, or
26    // when there is no context like at the start of text for example. It can also be set to null
27    // externally when the user enters a separator that does not let bigrams across, like a period
28    // or a comma.
29    public final String mPrevWord;
30
31    // TODO: Have sentence separator.
32    // Whether the current context is beginning of sentence or not.
33    public final boolean mIsBeginningOfSentence;
34
35    // Beginning of sentence.
36    public PrevWordsInfo() {
37        mPrevWord = "";
38        mIsBeginningOfSentence = true;
39    }
40
41    public PrevWordsInfo(final String prevWord) {
42        mPrevWord = prevWord;
43        mIsBeginningOfSentence = false;
44    }
45
46    public boolean isValid() {
47        return mPrevWord != null;
48    }
49}
50