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
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
* Copyright (C) 2008 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.util.Log;
public class TextEntryState {
private static final String TAG = TextEntryState.class.getSimpleName();
private static final boolean DEBUG = true;
private static final int UNKNOWN = 0;
private static final int START = 1;
private static final int IN_WORD = 2;
private static final int ACCEPTED_DEFAULT = 3;
private static final int PICKED_SUGGESTION = 4;
private static final int PUNCTUATION_AFTER_WORD = 5;
private static final int PUNCTUATION_AFTER_ACCEPTED = 6;
private static final int SPACE_AFTER_ACCEPTED = 7;
private static final int SPACE_AFTER_PICKED = 8;
private static final int UNDO_COMMIT = 9;
private static final int RECORRECTING = 10;
private static final int PICKED_RECORRECTION = 11;
private static int sState = UNKNOWN;
private static int sPreviousState = UNKNOWN;
private static void setState(final int newState) {
sPreviousState = sState;
sState = newState;
}
public static void acceptedDefault(CharSequence typedWord, CharSequence actualWord) {
if (typedWord == null) return;
setState(ACCEPTED_DEFAULT);
LatinImeLogger.logOnAutoSuggestion(typedWord.toString(), actualWord.toString());
if (DEBUG)
displayState("acceptedDefault", "typedWord", typedWord, "actualWord", actualWord);
}
// State.ACCEPTED_DEFAULT will be changed to other sub-states
// (see "case ACCEPTED_DEFAULT" in typedCharacter() below),
// and should be restored back to State.ACCEPTED_DEFAULT after processing for each sub-state.
public static void backToAcceptedDefault(CharSequence typedWord) {
if (typedWord == null) return;
switch (sState) {
case SPACE_AFTER_ACCEPTED:
case PUNCTUATION_AFTER_ACCEPTED:
case IN_WORD:
setState(ACCEPTED_DEFAULT);
break;
default:
break;
}
if (DEBUG) displayState("backToAcceptedDefault", "typedWord", typedWord);
}
public static void acceptedTyped(CharSequence typedWord) {
setState(PICKED_SUGGESTION);
if (DEBUG) displayState("acceptedTyped", "typedWord", typedWord);
}
public static void acceptedSuggestion(CharSequence typedWord, CharSequence actualWord) {
if (sState == RECORRECTING || sState == PICKED_RECORRECTION) {
setState(PICKED_RECORRECTION);
} else {
setState(PICKED_SUGGESTION);
}
if (DEBUG)
displayState("acceptedSuggestion", "typedWord", typedWord, "actualWord", actualWord);
}
public static void selectedForRecorrection() {
setState(RECORRECTING);
if (DEBUG) displayState("selectedForRecorrection");
}
public static void onAbortRecorrection() {
if (sState == RECORRECTING || sState == PICKED_RECORRECTION) {
setState(START);
}
if (DEBUG) displayState("onAbortRecorrection");
}
public static void typedCharacter(char c, boolean isSeparator) {
final boolean isSpace = (c == ' ');
switch (sState) {
case IN_WORD:
if (isSpace || isSeparator) {
setState(START);
} else {
// State hasn't changed.
}
break;
case ACCEPTED_DEFAULT:
case SPACE_AFTER_PICKED:
case PUNCTUATION_AFTER_ACCEPTED:
if (isSpace) {
setState(SPACE_AFTER_ACCEPTED);
} else if (isSeparator) {
// Swap
setState(PUNCTUATION_AFTER_ACCEPTED);
} else {
setState(IN_WORD);
}
break;
case PICKED_SUGGESTION:
case PICKED_RECORRECTION:
if (isSpace) {
setState(SPACE_AFTER_PICKED);
} else if (isSeparator) {
// Swap
setState(PUNCTUATION_AFTER_ACCEPTED);
} else {
setState(IN_WORD);
}
break;
case START:
case UNKNOWN:
case SPACE_AFTER_ACCEPTED:
case PUNCTUATION_AFTER_WORD:
if (!isSpace && !isSeparator) {
setState(IN_WORD);
} else {
setState(START);
}
break;
case UNDO_COMMIT:
if (isSpace || isSeparator) {
setState(ACCEPTED_DEFAULT);
} else {
setState(IN_WORD);
}
break;
case RECORRECTING:
setState(START);
break;
}
if (DEBUG) displayState("typedCharacter", "char", c, "isSeparator", isSeparator);
}
public static void backspace() {
if (sState == ACCEPTED_DEFAULT) {
setState(UNDO_COMMIT);
LatinImeLogger.logOnAutoSuggestionCanceled();
} else if (sState == UNDO_COMMIT) {
setState(IN_WORD);
}
if (DEBUG) displayState("backspace");
}
public static void reset() {
setState(START);
if (DEBUG) displayState("reset");
}
public static boolean isAcceptedDefault() {
return sState == ACCEPTED_DEFAULT;
}
public static boolean isSpaceAfterPicked() {
return sState == SPACE_AFTER_PICKED;
}
public static boolean isUndoCommit() {
return sState == UNDO_COMMIT;
}
public static boolean isPunctuationAfterAccepted() {
return sState == PUNCTUATION_AFTER_ACCEPTED;
}
public static boolean isRecorrecting() {
return sState == RECORRECTING || sState == PICKED_RECORRECTION;
}
public static String getState() {
return stateName(sState);
}
private static String stateName(int state) {
switch (state) {
case START: return "START";
case IN_WORD: return "IN_WORD";
case ACCEPTED_DEFAULT: return "ACCEPTED_DEFAULT";
case PICKED_SUGGESTION: return "PICKED_SUGGESTION";
case PUNCTUATION_AFTER_WORD: return "PUNCTUATION_AFTER_WORD";
case PUNCTUATION_AFTER_ACCEPTED: return "PUNCTUATION_AFTER_ACCEPTED";
case SPACE_AFTER_ACCEPTED: return "SPACE_AFTER_ACCEPTED";
case SPACE_AFTER_PICKED: return "SPACE_AFTER_PICKED";
case UNDO_COMMIT: return "UNDO_COMMIT";
case RECORRECTING: return "RECORRECTING";
case PICKED_RECORRECTION: return "PICKED_RECORRECTION";
default: return "UNKNOWN";
}
}
private static void displayState(String title, Object ... args) {
final StringBuilder sb = new StringBuilder(title);
sb.append(':');
for (int i = 0; i < args.length; i += 2) {
sb.append(' ');
sb.append(args[i]);
sb.append('=');
sb.append(args[i+1].toString());
}
sb.append(" state=");
sb.append(stateName(sState));
sb.append(" previous=");
sb.append(stateName(sPreviousState));
Log.d(TAG, sb.toString());
}
}
|
