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
|
/*
* Copyright (C) 2006 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 android.text.method;
import android.text.InputType;
import android.text.Spannable;
import android.view.KeyCharacterMap.KeyData;
import android.view.KeyEvent;
/**
* For dialing-only text entry
* <p></p>
* As for all implementations of {@link KeyListener}, this class is only concerned
* with hardware keyboards. Software input methods have no obligation to trigger
* the methods in this class.
*/
public class DialerKeyListener extends NumberKeyListener
{
@Override
protected char[] getAcceptedChars()
{
return CHARACTERS;
}
public static DialerKeyListener getInstance() {
if (sInstance != null)
return sInstance;
sInstance = new DialerKeyListener();
return sInstance;
}
public int getInputType() {
return InputType.TYPE_CLASS_PHONE;
}
/**
* Overrides the superclass's lookup method to prefer the number field
* from the KeyEvent.
*/
protected int lookup(KeyEvent event, Spannable content) {
int meta = getMetaState(content, event);
int number = event.getNumber();
/*
* Prefer number if no meta key is active, or if it produces something
* valid and the meta lookup does not.
*/
if ((meta & (MetaKeyKeyListener.META_ALT_ON | MetaKeyKeyListener.META_SHIFT_ON)) == 0) {
if (number != 0) {
return number;
}
}
int match = super.lookup(event, content);
if (match != 0) {
return match;
} else {
/*
* If a meta key is active but the lookup with the meta key
* did not produce anything, try some other meta keys, because
* the user might have pressed SHIFT when they meant ALT,
* or vice versa.
*/
if (meta != 0) {
KeyData kd = new KeyData();
char[] accepted = getAcceptedChars();
if (event.getKeyData(kd)) {
for (int i = 1; i < kd.meta.length; i++) {
if (ok(accepted, kd.meta[i])) {
return kd.meta[i];
}
}
}
}
/*
* Otherwise, use the number associated with the key, since
* whatever they wanted to do with the meta key does not
* seem to be valid here.
*/
return number;
}
}
/**
* The characters that are used.
*
* @see KeyEvent#getMatch
* @see #getAcceptedChars
*/
public static final char[] CHARACTERS = new char[] {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '#', '*',
'+', '-', '(', ')', ',', '/', 'N', '.', ' ', ';'
};
private static DialerKeyListener sInstance;
}
|
