The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006 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 | |
| 17 | package android.text.method; |
| 18 | |
| 19 | import android.view.KeyEvent; |
| 20 | import android.view.KeyCharacterMap.KeyData; |
| 21 | import android.text.InputType; |
| 22 | import android.text.Spannable; |
| 23 | |
| 24 | /** |
| 25 | * For dialing-only text entry |
Jean Chalard | 405bc51 | 2012-05-29 19:12:34 +0900 | [diff] [blame] | 26 | * <p></p> |
| 27 | * As for all implementations of {@link KeyListener}, this class is only concerned |
| 28 | * with hardware keyboards. Software input methods have no obligation to trigger |
| 29 | * the methods in this class. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 30 | */ |
| 31 | public class DialerKeyListener extends NumberKeyListener |
| 32 | { |
| 33 | @Override |
| 34 | protected char[] getAcceptedChars() |
| 35 | { |
| 36 | return CHARACTERS; |
| 37 | } |
| 38 | |
| 39 | public static DialerKeyListener getInstance() { |
| 40 | if (sInstance != null) |
| 41 | return sInstance; |
| 42 | |
| 43 | sInstance = new DialerKeyListener(); |
| 44 | return sInstance; |
| 45 | } |
| 46 | |
| 47 | public int getInputType() { |
| 48 | return InputType.TYPE_CLASS_PHONE; |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Overrides the superclass's lookup method to prefer the number field |
| 53 | * from the KeyEvent. |
| 54 | */ |
| 55 | protected int lookup(KeyEvent event, Spannable content) { |
Jeff Brown | 6b53e8d | 2010-11-10 16:03:06 -0800 | [diff] [blame] | 56 | int meta = event.getMetaState() | getMetaState(content); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 57 | int number = event.getNumber(); |
| 58 | |
| 59 | /* |
| 60 | * Prefer number if no meta key is active, or if it produces something |
| 61 | * valid and the meta lookup does not. |
| 62 | */ |
Jeff Brown | 497a92c | 2010-09-12 17:55:08 -0700 | [diff] [blame] | 63 | if ((meta & (MetaKeyKeyListener.META_ALT_ON | MetaKeyKeyListener.META_SHIFT_ON)) == 0) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 64 | if (number != 0) { |
| 65 | return number; |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | int match = super.lookup(event, content); |
| 70 | |
| 71 | if (match != 0) { |
| 72 | return match; |
| 73 | } else { |
| 74 | /* |
| 75 | * If a meta key is active but the lookup with the meta key |
| 76 | * did not produce anything, try some other meta keys, because |
| 77 | * the user might have pressed SHIFT when they meant ALT, |
| 78 | * or vice versa. |
| 79 | */ |
| 80 | |
| 81 | if (meta != 0) { |
| 82 | KeyData kd = new KeyData(); |
| 83 | char[] accepted = getAcceptedChars(); |
| 84 | |
| 85 | if (event.getKeyData(kd)) { |
| 86 | for (int i = 1; i < kd.meta.length; i++) { |
| 87 | if (ok(accepted, kd.meta[i])) { |
| 88 | return kd.meta[i]; |
| 89 | } |
| 90 | } |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | /* |
| 95 | * Otherwise, use the number associated with the key, since |
| 96 | * whatever they wanted to do with the meta key does not |
| 97 | * seem to be valid here. |
| 98 | */ |
| 99 | |
| 100 | return number; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | |
| 105 | /** |
| 106 | * The characters that are used. |
| 107 | * |
| 108 | * @see KeyEvent#getMatch |
| 109 | * @see #getAcceptedChars |
| 110 | */ |
| 111 | public static final char[] CHARACTERS = new char[] { |
| 112 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '#', '*', |
Wink Saville | dda5391 | 2009-05-28 17:32:34 -0700 | [diff] [blame] | 113 | '+', '-', '(', ')', ',', '/', 'N', '.', ' ', ';' |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 114 | }; |
| 115 | |
| 116 | private static DialerKeyListener sInstance; |
| 117 | } |