KeyboardCodesSet.java revision 3bbd50c36b1e9b9e3b26ab510853021515886498 
1/*
2 * Copyright (C) 2012 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.keyboard.internal;
18
19import com.android.inputmethod.latin.Constants;
20import com.android.inputmethod.latin.utils.CollectionUtils;
21import com.android.inputmethod.latin.utils.SubtypeLocaleUtils;
22
23import java.util.HashMap;
24import java.util.Locale;
25
26public final class KeyboardCodesSet {
27    public static final String PREFIX_CODE = "!code/";
28
29    private static final HashMap<String, Integer> sNameToIdMap = CollectionUtils.newHashMap();
30
31    private int[] mCodes = DEFAULT;
32
33    public void setLocale(final Locale locale) {
34        mCodes = SubtypeLocaleUtils.isRtlLanguage(locale) ? RTL : DEFAULT;
35    }
36
37    public int getCode(final String name) {
38        Integer id = sNameToIdMap.get(name);
39        if (id == null) throw new RuntimeException("Unknown key code: " + name);
40        return mCodes[id];
41    }
42
43    private static final String[] ID_TO_NAME = {
44        "key_tab",
45        "key_enter",
46        "key_space",
47        "key_shift",
48        "key_capslock",
49        "key_switch_alpha_symbol",
50        "key_output_text",
51        "key_delete",
52        "key_settings",
53        "key_shortcut",
54        "key_action_next",
55        "key_action_previous",
56        "key_shift_enter",
57        "key_language_switch",
58        "key_emoji",
59        "key_alpha_from_emoji",
60        "key_unspecified",
61        "key_left_parenthesis",
62        "key_right_parenthesis",
63        "key_less_than",
64        "key_greater_than",
65        "key_left_square_bracket",
66        "key_right_square_bracket",
67        "key_left_curly_bracket",
68        "key_right_curly_bracket",
69    };
70
71    private static final int CODE_LEFT_PARENTHESIS = '(';
72    private static final int CODE_RIGHT_PARENTHESIS = ')';
73    private static final int CODE_LESS_THAN_SIGN = '<';
74    private static final int CODE_GREATER_THAN_SIGN = '>';
75    private static final int CODE_LEFT_SQUARE_BRACKET = '[';
76    private static final int CODE_RIGHT_SQUARE_BRACKET = ']';
77    private static final int CODE_LEFT_CURLY_BRACKET = '{';
78    private static final int CODE_RIGHT_CURLY_BRACKET = '}';
79
80    // This array should be aligned with the array RTL below.
81    private static final int[] DEFAULT = {
82        Constants.CODE_TAB,
83        Constants.CODE_ENTER,
84        Constants.CODE_SPACE,
85        Constants.CODE_SHIFT,
86        Constants.CODE_CAPSLOCK,
87        Constants.CODE_SWITCH_ALPHA_SYMBOL,
88        Constants.CODE_OUTPUT_TEXT,
89        Constants.CODE_DELETE,
90        Constants.CODE_SETTINGS,
91        Constants.CODE_SHORTCUT,
92        Constants.CODE_ACTION_NEXT,
93        Constants.CODE_ACTION_PREVIOUS,
94        Constants.CODE_SHIFT_ENTER,
95        Constants.CODE_LANGUAGE_SWITCH,
96        Constants.CODE_EMOJI,
97        Constants.CODE_ALPHA_FROM_EMOJI,
98        Constants.CODE_UNSPECIFIED,
99        CODE_LEFT_PARENTHESIS,
100        CODE_RIGHT_PARENTHESIS,
101        CODE_LESS_THAN_SIGN,
102        CODE_GREATER_THAN_SIGN,
103        CODE_LEFT_SQUARE_BRACKET,
104        CODE_RIGHT_SQUARE_BRACKET,
105        CODE_LEFT_CURLY_BRACKET,
106        CODE_RIGHT_CURLY_BRACKET,
107    };
108
109    private static final int[] RTL = {
110        DEFAULT[0],
111        DEFAULT[1],
112        DEFAULT[2],
113        DEFAULT[3],
114        DEFAULT[4],
115        DEFAULT[5],
116        DEFAULT[6],
117        DEFAULT[7],
118        DEFAULT[8],
119        DEFAULT[9],
120        DEFAULT[10],
121        DEFAULT[11],
122        DEFAULT[12],
123        DEFAULT[13],
124        DEFAULT[14],
125        DEFAULT[15],
126        DEFAULT[16],
127        CODE_RIGHT_PARENTHESIS,
128        CODE_LEFT_PARENTHESIS,
129        CODE_GREATER_THAN_SIGN,
130        CODE_LESS_THAN_SIGN,
131        CODE_RIGHT_SQUARE_BRACKET,
132        CODE_LEFT_SQUARE_BRACKET,
133        CODE_RIGHT_CURLY_BRACKET,
134        CODE_LEFT_CURLY_BRACKET,
135    };
136
137    static {
138        if (DEFAULT.length != RTL.length || DEFAULT.length != ID_TO_NAME.length) {
139            throw new RuntimeException("Internal inconsistency");
140        }
141        for (int i = 0; i < ID_TO_NAME.length; i++) {
142            sNameToIdMap.put(ID_TO_NAME[i], i);
143        }
144    }
145}
146