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
|
/*
* Copyright (C) 2017 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.dialer.smartdial;
import android.content.Context;
import android.support.annotation.VisibleForTesting;
import android.support.v4.util.SimpleArrayMap;
import com.android.dialer.compat.CompatUtils;
import com.android.dialer.configprovider.ConfigProviderBindings;
import com.google.common.base.Optional;
/**
* A utility class that combines the functionality of two implementations of {@link SmartDialMap} so
* that we support smart dial for dual alphabets.
*
* <p>Of the two implementations of {@link SmartDialMap}, the default one always takes precedence.
* The second one is consulted only when the default one is unable to provide a valid result.
*
* <p>Note that the second implementation can be absent if it is not defined for the system's 1st
* language preference.
*/
@SuppressWarnings("Guava")
public class CompositeSmartDialMap {
@VisibleForTesting
public static final String FLAG_ENABLE_DUAL_ALPHABETS = "enable_dual_alphabets_on_t9";
private static final SmartDialMap DEFAULT_MAP = LatinSmartDialMap.getInstance();
// A map in which each key is an ISO 639-2 language code and the corresponding value is a
// SmartDialMap
private static final SimpleArrayMap<String, SmartDialMap> EXTRA_MAPS = new SimpleArrayMap<>();
static {
EXTRA_MAPS.put("rus", RussianSmartDialMap.getInstance());
}
private CompositeSmartDialMap() {}
/**
* Returns true if the provided character can be mapped to a key on the dialpad.
*
* <p>The provided character is expected to be a normalized character. See {@link
* SmartDialMap#normalizeCharacter(char)} for details.
*/
static boolean isValidDialpadCharacter(Context context, char ch) {
if (DEFAULT_MAP.isValidDialpadCharacter(ch)) {
return true;
}
Optional<SmartDialMap> extraMap = getExtraMap(context);
return extraMap.isPresent() && extraMap.get().isValidDialpadCharacter(ch);
}
/**
* Returns true if the provided character is a letter, and can be mapped to a key on the dialpad.
*
* <p>The provided character is expected to be a normalized character. See {@link
* SmartDialMap#normalizeCharacter(char)} for details.
*/
static boolean isValidDialpadAlphabeticChar(Context context, char ch) {
if (DEFAULT_MAP.isValidDialpadAlphabeticChar(ch)) {
return true;
}
Optional<SmartDialMap> extraMap = getExtraMap(context);
return extraMap.isPresent() && extraMap.get().isValidDialpadAlphabeticChar(ch);
}
/**
* Returns true if the provided character is a digit, and can be mapped to a key on the dialpad.
*/
static boolean isValidDialpadNumericChar(Context context, char ch) {
if (DEFAULT_MAP.isValidDialpadNumericChar(ch)) {
return true;
}
Optional<SmartDialMap> extraMap = getExtraMap(context);
return extraMap.isPresent() && extraMap.get().isValidDialpadNumericChar(ch);
}
/**
* Get the index of the key on the dialpad which the character corresponds to.
*
* <p>The provided character is expected to be a normalized character. See {@link
* SmartDialMap#normalizeCharacter(char)} for details.
*
* <p>If the provided character can't be mapped to a key on the dialpad, return -1.
*/
static byte getDialpadIndex(Context context, char ch) {
Optional<Byte> dialpadIndex = DEFAULT_MAP.getDialpadIndex(ch);
if (dialpadIndex.isPresent()) {
return dialpadIndex.get();
}
Optional<SmartDialMap> extraMap = getExtraMap(context);
if (extraMap.isPresent()) {
dialpadIndex = extraMap.get().getDialpadIndex(ch);
}
return dialpadIndex.isPresent() ? dialpadIndex.get() : -1;
}
/**
* Get the actual numeric character on the dialpad which the character corresponds to.
*
* <p>The provided character is expected to be a normalized character. See {@link
* SmartDialMap#normalizeCharacter(char)} for details.
*
* <p>If the provided character can't be mapped to a key on the dialpad, return the character.
*/
static char getDialpadNumericCharacter(Context context, char ch) {
Optional<Character> dialpadNumericChar = DEFAULT_MAP.getDialpadNumericCharacter(ch);
if (dialpadNumericChar.isPresent()) {
return dialpadNumericChar.get();
}
Optional<SmartDialMap> extraMap = getExtraMap(context);
if (extraMap.isPresent()) {
dialpadNumericChar = extraMap.get().getDialpadNumericCharacter(ch);
}
return dialpadNumericChar.isPresent() ? dialpadNumericChar.get() : ch;
}
/**
* Converts uppercase characters to lower case ones, and on a best effort basis, strips accents
* from accented characters.
*
* <p>If the provided character can't be mapped to a key on the dialpad, return the character.
*/
static char normalizeCharacter(Context context, char ch) {
Optional<Character> normalizedChar = DEFAULT_MAP.normalizeCharacter(ch);
if (normalizedChar.isPresent()) {
return normalizedChar.get();
}
Optional<SmartDialMap> extraMap = getExtraMap(context);
if (extraMap.isPresent()) {
normalizedChar = extraMap.get().normalizeCharacter(ch);
}
return normalizedChar.isPresent() ? normalizedChar.get() : ch;
}
@VisibleForTesting
static Optional<SmartDialMap> getExtraMap(Context context) {
if (!ConfigProviderBindings.get(context).getBoolean(FLAG_ENABLE_DUAL_ALPHABETS, false)) {
return Optional.absent();
}
String languageCode = CompatUtils.getLocale(context).getISO3Language();
return EXTRA_MAPS.containsKey(languageCode)
? Optional.of(EXTRA_MAPS.get(languageCode))
: Optional.absent();
}
}
|
