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
|
/*
* 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;
import android.Manifest;
import android.content.Context;
import android.net.Uri;
import android.provider.ContactsContract;
import android.provider.ContactsContract.Contacts;
import android.util.Log;
import com.android.inputmethod.annotations.ExternallyReferenced;
import com.android.inputmethod.latin.ContactsManager.ContactsChangedListener;
import com.android.inputmethod.latin.common.StringUtils;
import com.android.inputmethod.latin.permissions.PermissionsUtil;
import com.android.inputmethod.latin.personalization.AccountUtils;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import javax.annotation.Nullable;
public class ContactsBinaryDictionary extends ExpandableBinaryDictionary
implements ContactsChangedListener {
private static final String TAG = ContactsBinaryDictionary.class.getSimpleName();
private static final String NAME = "contacts";
private static final boolean DEBUG = false;
private static final boolean DEBUG_DUMP = false;
/**
* Whether to use "firstname lastname" in bigram predictions.
*/
private final boolean mUseFirstLastBigrams;
private final ContactsManager mContactsManager;
protected ContactsBinaryDictionary(final Context context, final Locale locale,
final File dictFile, final String name) {
super(context, getDictName(name, locale, dictFile), locale, Dictionary.TYPE_CONTACTS,
dictFile);
mUseFirstLastBigrams = ContactsDictionaryUtils.useFirstLastBigramsForLocale(locale);
mContactsManager = new ContactsManager(context);
mContactsManager.registerForUpdates(this /* listener */);
reloadDictionaryIfRequired();
}
// Note: This method is called by {@link DictionaryFacilitator} using Java reflection.
@ExternallyReferenced
public static ContactsBinaryDictionary getDictionary(final Context context, final Locale locale,
final File dictFile, final String dictNamePrefix, @Nullable final String account) {
return new ContactsBinaryDictionary(context, locale, dictFile, dictNamePrefix + NAME);
}
@Override
public synchronized void close() {
mContactsManager.close();
super.close();
}
/**
* Typically called whenever the dictionary is created for the first time or
* recreated when we think that there are updates to the dictionary.
* This is called asynchronously.
*/
@Override
public void loadInitialContentsLocked() {
loadDeviceAccountsEmailAddressesLocked();
loadDictionaryForUriLocked(ContactsContract.Profile.CONTENT_URI);
// TODO: Switch this URL to the newer ContactsContract too
loadDictionaryForUriLocked(Contacts.CONTENT_URI);
}
/**
* Loads device accounts to the dictionary.
*/
private void loadDeviceAccountsEmailAddressesLocked() {
final List<String> accountVocabulary =
AccountUtils.getDeviceAccountsEmailAddresses(mContext);
if (accountVocabulary == null || accountVocabulary.isEmpty()) {
return;
}
for (String word : accountVocabulary) {
if (DEBUG) {
Log.d(TAG, "loadAccountVocabulary: " + word);
}
runGCIfRequiredLocked(true /* mindsBlockByGC */);
addUnigramLocked(word, ContactsDictionaryConstants.FREQUENCY_FOR_CONTACTS,
false /* isNotAWord */, false /* isPossiblyOffensive */,
BinaryDictionary.NOT_A_VALID_TIMESTAMP);
}
}
/**
* Loads data within content providers to the dictionary.
*/
private void loadDictionaryForUriLocked(final Uri uri) {
if (!PermissionsUtil.checkAllPermissionsGranted(
mContext, Manifest.permission.READ_CONTACTS)) {
Log.i(TAG, "No permission to read contacts. Not loading the Dictionary.");
}
final ArrayList<String> validNames = mContactsManager.getValidNames(uri);
for (final String name : validNames) {
addNameLocked(name);
}
if (uri.equals(Contacts.CONTENT_URI)) {
// Since we were able to add content successfully, update the local
// state of the manager.
mContactsManager.updateLocalState(validNames);
}
}
/**
* Adds the words in a name (e.g., firstname/lastname) to the binary dictionary along with their
* bigrams depending on locale.
*/
private void addNameLocked(final String name) {
int len = StringUtils.codePointCount(name);
NgramContext ngramContext = NgramContext.getEmptyPrevWordsContext(
BinaryDictionary.MAX_PREV_WORD_COUNT_FOR_N_GRAM);
// TODO: Better tokenization for non-Latin writing systems
for (int i = 0; i < len; i++) {
if (Character.isLetter(name.codePointAt(i))) {
int end = ContactsDictionaryUtils.getWordEndPosition(name, len, i);
String word = name.substring(i, end);
if (DEBUG_DUMP) {
Log.d(TAG, "addName word = " + word);
}
i = end - 1;
// Don't add single letter words, possibly confuses
// capitalization of i.
final int wordLen = StringUtils.codePointCount(word);
if (wordLen <= MAX_WORD_LENGTH && wordLen > 1) {
if (DEBUG) {
Log.d(TAG, "addName " + name + ", " + word + ", " + ngramContext);
}
runGCIfRequiredLocked(true /* mindsBlockByGC */);
addUnigramLocked(word,
ContactsDictionaryConstants.FREQUENCY_FOR_CONTACTS, false /* isNotAWord */,
false /* isPossiblyOffensive */,
BinaryDictionary.NOT_A_VALID_TIMESTAMP);
if (ngramContext.isValid() && mUseFirstLastBigrams) {
runGCIfRequiredLocked(true /* mindsBlockByGC */);
addNgramEntryLocked(ngramContext,
word,
ContactsDictionaryConstants.FREQUENCY_FOR_CONTACTS_BIGRAM,
BinaryDictionary.NOT_A_VALID_TIMESTAMP);
}
ngramContext = ngramContext.getNextNgramContext(
new NgramContext.WordInfo(word));
}
}
}
}
@Override
public void onContactsChange() {
setNeedsToRecreate();
}
}
|
