1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/*
* Copyright (C) 2012 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 com.android.inputmethod.latin.spellcheck;
import android.annotation.TargetApi;
import android.content.res.Resources;
import android.os.Binder;
import android.os.Build;
import android.text.TextUtils;
import android.util.Log;
import android.view.textservice.SentenceSuggestionsInfo;
import android.view.textservice.SuggestionsInfo;
import android.view.textservice.TextInfo;
import com.android.inputmethod.compat.TextInfoCompatUtils;
import com.android.inputmethod.latin.NgramContext;
import com.android.inputmethod.latin.utils.StringUtils;
import java.util.ArrayList;
import java.util.Locale;
public final class AndroidSpellCheckerSession extends AndroidWordLevelSpellCheckerSession {
private static final String TAG = AndroidSpellCheckerSession.class.getSimpleName();
private static final boolean DBG = false;
private final Resources mResources;
private SentenceLevelAdapter mSentenceLevelAdapter;
public AndroidSpellCheckerSession(AndroidSpellCheckerService service) {
super(service);
mResources = service.getResources();
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
private SentenceSuggestionsInfo fixWronglyInvalidatedWordWithSingleQuote(TextInfo ti,
SentenceSuggestionsInfo ssi) {
final CharSequence typedText = TextInfoCompatUtils.getCharSequenceOrString(ti);
if (!typedText.toString().contains(AndroidSpellCheckerService.SINGLE_QUOTE)) {
return null;
}
final int N = ssi.getSuggestionsCount();
final ArrayList<Integer> additionalOffsets = new ArrayList<>();
final ArrayList<Integer> additionalLengths = new ArrayList<>();
final ArrayList<SuggestionsInfo> additionalSuggestionsInfos = new ArrayList<>();
CharSequence currentWord = null;
for (int i = 0; i < N; ++i) {
final SuggestionsInfo si = ssi.getSuggestionsInfoAt(i);
final int flags = si.getSuggestionsAttributes();
if ((flags & SuggestionsInfo.RESULT_ATTR_IN_THE_DICTIONARY) == 0) {
continue;
}
final int offset = ssi.getOffsetAt(i);
final int length = ssi.getLengthAt(i);
final CharSequence subText = typedText.subSequence(offset, offset + length);
final NgramContext ngramContext =
new NgramContext(new NgramContext.WordInfo(currentWord));
currentWord = subText;
if (!subText.toString().contains(AndroidSpellCheckerService.SINGLE_QUOTE)) {
continue;
}
final CharSequence[] splitTexts = StringUtils.split(subText,
AndroidSpellCheckerService.SINGLE_QUOTE,
true /* preserveTrailingEmptySegments */ );
if (splitTexts == null || splitTexts.length <= 1) {
continue;
}
final int splitNum = splitTexts.length;
for (int j = 0; j < splitNum; ++j) {
final CharSequence splitText = splitTexts[j];
if (TextUtils.isEmpty(splitText)) {
continue;
}
if (mSuggestionsCache.getSuggestionsFromCache(splitText.toString(), ngramContext)
== null) {
continue;
}
final int newLength = splitText.length();
// Neither RESULT_ATTR_IN_THE_DICTIONARY nor RESULT_ATTR_LOOKS_LIKE_TYPO
final int newFlags = 0;
final SuggestionsInfo newSi = new SuggestionsInfo(newFlags, EMPTY_STRING_ARRAY);
newSi.setCookieAndSequence(si.getCookie(), si.getSequence());
if (DBG) {
Log.d(TAG, "Override and remove old span over: " + splitText + ", "
+ offset + "," + newLength);
}
additionalOffsets.add(offset);
additionalLengths.add(newLength);
additionalSuggestionsInfos.add(newSi);
}
}
final int additionalSize = additionalOffsets.size();
if (additionalSize <= 0) {
return null;
}
final int suggestionsSize = N + additionalSize;
final int[] newOffsets = new int[suggestionsSize];
final int[] newLengths = new int[suggestionsSize];
final SuggestionsInfo[] newSuggestionsInfos = new SuggestionsInfo[suggestionsSize];
int i;
for (i = 0; i < N; ++i) {
newOffsets[i] = ssi.getOffsetAt(i);
newLengths[i] = ssi.getLengthAt(i);
newSuggestionsInfos[i] = ssi.getSuggestionsInfoAt(i);
}
for (; i < suggestionsSize; ++i) {
newOffsets[i] = additionalOffsets.get(i - N);
newLengths[i] = additionalLengths.get(i - N);
newSuggestionsInfos[i] = additionalSuggestionsInfos.get(i - N);
}
return new SentenceSuggestionsInfo(newSuggestionsInfos, newOffsets, newLengths);
}
@Override
public SentenceSuggestionsInfo[] onGetSentenceSuggestionsMultiple(TextInfo[] textInfos,
int suggestionsLimit) {
final SentenceSuggestionsInfo[] retval = splitAndSuggest(textInfos, suggestionsLimit);
if (retval == null || retval.length != textInfos.length) {
return retval;
}
for (int i = 0; i < retval.length; ++i) {
final SentenceSuggestionsInfo tempSsi =
fixWronglyInvalidatedWordWithSingleQuote(textInfos[i], retval[i]);
if (tempSsi != null) {
retval[i] = tempSsi;
}
}
return retval;
}
/**
* Get sentence suggestions for specified texts in an array of TextInfo. This is taken from
* SpellCheckerService#onGetSentenceSuggestionsMultiple that we can't use because it's
* using private variables.
* The default implementation splits the input text to words and returns
* {@link SentenceSuggestionsInfo} which contains suggestions for each word.
* This function will run on the incoming IPC thread.
* So, this is not called on the main thread,
* but will be called in series on another thread.
* @param textInfos an array of the text metadata
* @param suggestionsLimit the maximum number of suggestions to be returned
* @return an array of {@link SentenceSuggestionsInfo} returned by
* {@link android.service.textservice.SpellCheckerService.Session#onGetSuggestions(TextInfo, int)}
*/
private SentenceSuggestionsInfo[] splitAndSuggest(TextInfo[] textInfos, int suggestionsLimit) {
if (textInfos == null || textInfos.length == 0) {
return SentenceLevelAdapter.getEmptySentenceSuggestionsInfo();
}
SentenceLevelAdapter sentenceLevelAdapter;
synchronized(this) {
sentenceLevelAdapter = mSentenceLevelAdapter;
if (sentenceLevelAdapter == null) {
final String localeStr = getLocale();
if (!TextUtils.isEmpty(localeStr)) {
sentenceLevelAdapter = new SentenceLevelAdapter(mResources,
new Locale(localeStr));
mSentenceLevelAdapter = sentenceLevelAdapter;
}
}
}
if (sentenceLevelAdapter == null) {
return SentenceLevelAdapter.getEmptySentenceSuggestionsInfo();
}
final int infosSize = textInfos.length;
final SentenceSuggestionsInfo[] retval = new SentenceSuggestionsInfo[infosSize];
for (int i = 0; i < infosSize; ++i) {
final SentenceLevelAdapter.SentenceTextInfoParams textInfoParams =
sentenceLevelAdapter.getSplitWords(textInfos[i]);
final ArrayList<SentenceLevelAdapter.SentenceWordItem> mItems =
textInfoParams.mItems;
final int itemsSize = mItems.size();
final TextInfo[] splitTextInfos = new TextInfo[itemsSize];
for (int j = 0; j < itemsSize; ++j) {
splitTextInfos[j] = mItems.get(j).mTextInfo;
}
retval[i] = SentenceLevelAdapter.reconstructSuggestions(
textInfoParams, onGetSuggestionsMultiple(
splitTextInfos, suggestionsLimit, true));
}
return retval;
}
@Override
public SuggestionsInfo[] onGetSuggestionsMultiple(TextInfo[] textInfos,
int suggestionsLimit, boolean sequentialWords) {
long ident = Binder.clearCallingIdentity();
try {
final int length = textInfos.length;
final SuggestionsInfo[] retval = new SuggestionsInfo[length];
for (int i = 0; i < length; ++i) {
final CharSequence prevWord;
if (sequentialWords && i > 0) {
final TextInfo prevTextInfo = textInfos[i - 1];
final CharSequence prevWordCandidate =
TextInfoCompatUtils.getCharSequenceOrString(prevTextInfo);
// Note that an empty string would be used to indicate the initial word
// in the future.
prevWord = TextUtils.isEmpty(prevWordCandidate) ? null : prevWordCandidate;
} else {
prevWord = null;
}
final NgramContext ngramContext =
new NgramContext(new NgramContext.WordInfo(prevWord));
final TextInfo textInfo = textInfos[i];
retval[i] = onGetSuggestionsInternal(textInfo, ngramContext, suggestionsLimit);
retval[i].setCookieAndSequence(textInfo.getCookie(), textInfo.getSequence());
}
return retval;
} finally {
Binder.restoreCallingIdentity(ident);
}
}
}
|
