1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany |
---|
2 | // |
---|
3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
---|
4 | // you may not use this file except in compliance with the License. |
---|
5 | // You may obtain a copy of the License at |
---|
6 | // |
---|
7 | // http://www.apache.org/licenses/LICENSE-2.0 |
---|
8 | // |
---|
9 | // Unless required by applicable law or agreed to in writing, software |
---|
10 | // distributed under the License is distributed on an "AS IS" BASIS, |
---|
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
---|
12 | // See the License for the specific language governing permissions and |
---|
13 | // limitations under the License. |
---|
14 | |
---|
15 | package de.ugoe.cs.autoquest.usability; |
---|
16 | |
---|
17 | import java.util.ArrayList; |
---|
18 | import java.util.Collection; |
---|
19 | import java.util.HashMap; |
---|
20 | import java.util.HashSet; |
---|
21 | import java.util.LinkedList; |
---|
22 | import java.util.List; |
---|
23 | import java.util.Map; |
---|
24 | import java.util.Set; |
---|
25 | |
---|
26 | import de.ugoe.cs.autoquest.eventcore.IEventTarget; |
---|
27 | import de.ugoe.cs.autoquest.eventcore.IEventType; |
---|
28 | import de.ugoe.cs.autoquest.eventcore.gui.TextInput; |
---|
29 | import de.ugoe.cs.autoquest.eventcore.guimodel.ITextArea; |
---|
30 | import de.ugoe.cs.autoquest.eventcore.guimodel.ITextField; |
---|
31 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IEventTaskInstance; |
---|
32 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IIterationInstance; |
---|
33 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IOptionalInstance; |
---|
34 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISelectionInstance; |
---|
35 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequenceInstance; |
---|
36 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskInstance; |
---|
37 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskModel; |
---|
38 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IUserSession; |
---|
39 | |
---|
40 | /** |
---|
41 | * TODO comment |
---|
42 | * |
---|
43 | * @version $Revision: $ $Date: 16.07.2012$ |
---|
44 | * @author 2012, last modified by $Author: pharms$ |
---|
45 | */ |
---|
46 | public class TextInputStatisticsRule implements UsabilityEvaluationRule { |
---|
47 | |
---|
48 | /* |
---|
49 | * (non-Javadoc) |
---|
50 | * |
---|
51 | * @see de.ugoe.cs.usability.UsabilityEvaluationRule#evaluate(TaskTree) |
---|
52 | */ |
---|
53 | @Override |
---|
54 | public UsabilityEvaluationResult evaluate(ITaskModel taskModel) { |
---|
55 | TextInputStatistics statistics = new TextInputStatistics(); |
---|
56 | calculateStatistics(taskModel.getUserSessions(), statistics); |
---|
57 | |
---|
58 | UsabilityEvaluationResult results = new UsabilityEvaluationResult(taskModel); |
---|
59 | analyzeStatistics(statistics, results); |
---|
60 | |
---|
61 | return results; |
---|
62 | } |
---|
63 | |
---|
64 | /** |
---|
65 | * |
---|
66 | */ |
---|
67 | private void analyzeStatistics(TextInputStatistics statistics, |
---|
68 | UsabilityEvaluationResult results) |
---|
69 | { |
---|
70 | checkTextInputRatio(statistics, results); |
---|
71 | checkTextFieldEntryRepetitions(statistics, results); |
---|
72 | checkTextFieldNoLetterOrDigitInputs(statistics, results); |
---|
73 | } |
---|
74 | |
---|
75 | /** |
---|
76 | * |
---|
77 | */ |
---|
78 | private void checkTextInputRatio(TextInputStatistics statistics, |
---|
79 | UsabilityEvaluationResult results) |
---|
80 | { |
---|
81 | int allTextFieldInputs = |
---|
82 | statistics.getNoOfTextFieldInputs() + statistics.getNoOfTextAreaInputs(); |
---|
83 | |
---|
84 | int ratio = 1000 * allTextFieldInputs / statistics.getNoOfAllEvents(); |
---|
85 | |
---|
86 | UsabilitySmellIntensity severity = UsabilitySmellIntensity.getIntensity(ratio); |
---|
87 | |
---|
88 | if (severity != null) { |
---|
89 | Map<String, Object> parameters = new HashMap<String, Object>(); |
---|
90 | parameters.put("textInputRatio", (ratio / 10)); |
---|
91 | |
---|
92 | results.addSmell |
---|
93 | (severity, UsabilitySmellDescription.TEXT_FIELD_INPUT_RATIO, parameters); |
---|
94 | } |
---|
95 | } |
---|
96 | |
---|
97 | /** |
---|
98 | * |
---|
99 | */ |
---|
100 | private void checkTextFieldEntryRepetitions(TextInputStatistics statistics, |
---|
101 | UsabilityEvaluationResult results) |
---|
102 | { |
---|
103 | List<TextFieldCorrelation> textFieldCorrelations = |
---|
104 | statistics.determineTextFieldCorrelations(); |
---|
105 | |
---|
106 | for (TextFieldCorrelation entry : textFieldCorrelations) { |
---|
107 | int noOfUsagesOfTextField1 = statistics.getUsageCount(entry.textField1); |
---|
108 | int noOfUsagesOfTextField2 = statistics.getUsageCount(entry.textField2); |
---|
109 | int numberOfEqualEntries = entry.enteredTexts.size(); |
---|
110 | |
---|
111 | createTextFieldEntryRepetitionSmell(noOfUsagesOfTextField1, numberOfEqualEntries, |
---|
112 | entry.textField1, entry.textField2, results); |
---|
113 | |
---|
114 | createTextFieldEntryRepetitionSmell(noOfUsagesOfTextField2, numberOfEqualEntries, |
---|
115 | entry.textField2, entry.textField1, results); |
---|
116 | |
---|
117 | } |
---|
118 | } |
---|
119 | |
---|
120 | /** |
---|
121 | * |
---|
122 | */ |
---|
123 | private void createTextFieldEntryRepetitionSmell(int allEntries, |
---|
124 | int numberOfEqualEntries, |
---|
125 | ITextField textField1, |
---|
126 | ITextField textField2, |
---|
127 | UsabilityEvaluationResult results) |
---|
128 | { |
---|
129 | int ratio = 1000 * numberOfEqualEntries / allEntries; |
---|
130 | |
---|
131 | UsabilitySmellIntensity severity = |
---|
132 | UsabilitySmellIntensity.getIntensity(ratio, allEntries, -1); |
---|
133 | |
---|
134 | if (severity != null) { |
---|
135 | Map<String, Object> parameters = new HashMap<String, Object>(); |
---|
136 | parameters.put("numberOfEqualEntries", numberOfEqualEntries); |
---|
137 | parameters.put("numberOfAllEntries", allEntries); |
---|
138 | parameters.put("textRepetitionRatio", (ratio / 10)); |
---|
139 | parameters.put("textField1", textField1); |
---|
140 | parameters.put("textField2", textField2); |
---|
141 | |
---|
142 | results.addSmell |
---|
143 | (severity, UsabilitySmellDescription.TEXT_FIELD_INPUT_REPETITIONS, parameters); |
---|
144 | } |
---|
145 | } |
---|
146 | |
---|
147 | /** |
---|
148 | * |
---|
149 | */ |
---|
150 | private void checkTextFieldNoLetterOrDigitInputs(TextInputStatistics statistics, |
---|
151 | UsabilityEvaluationResult results) |
---|
152 | { |
---|
153 | for (ITextField textField : statistics.getAllTextFields()) { |
---|
154 | int allCharactersCount = 0; |
---|
155 | int noLetterOrDigitCount = 0; |
---|
156 | |
---|
157 | for (String textInput : statistics.getAllInputsInto(textField)) { |
---|
158 | for (int j = 0; j < textInput.length(); j++) { |
---|
159 | if (!Character.isWhitespace(textInput.charAt(j))) { |
---|
160 | if (!Character.isLetterOrDigit(textInput.charAt(j))) { |
---|
161 | noLetterOrDigitCount++; |
---|
162 | } |
---|
163 | allCharactersCount++; |
---|
164 | } |
---|
165 | } |
---|
166 | } |
---|
167 | |
---|
168 | int ratio = 1000 * noLetterOrDigitCount / allCharactersCount; |
---|
169 | |
---|
170 | UsabilitySmellIntensity severity = UsabilitySmellIntensity.getIntensity |
---|
171 | (ratio, statistics.getAllInputsInto(textField).size(), -1); |
---|
172 | |
---|
173 | if (severity != null) { |
---|
174 | Map<String, Object> parameters = new HashMap<String, Object>(); |
---|
175 | parameters.put("textField", textField); |
---|
176 | parameters.put("noLetterOrDigitRatio", (ratio / 10)); |
---|
177 | |
---|
178 | results.addSmell |
---|
179 | (severity, UsabilitySmellDescription.TEXT_FIELD_NO_LETTER_OR_DIGIT_RATIO, |
---|
180 | parameters); |
---|
181 | } |
---|
182 | } |
---|
183 | } |
---|
184 | |
---|
185 | /** |
---|
186 | * |
---|
187 | */ |
---|
188 | private void calculateStatistics(Collection<IUserSession> sessions, |
---|
189 | TextInputStatistics statistics) |
---|
190 | { |
---|
191 | System.out.print("calculating statistics ... "); |
---|
192 | for (IUserSession session : sessions) { |
---|
193 | for (ITaskInstance taskInstance : session) { |
---|
194 | calculateStatistics(taskInstance, session, statistics); |
---|
195 | } |
---|
196 | } |
---|
197 | System.out.println("done"); |
---|
198 | } |
---|
199 | |
---|
200 | /** |
---|
201 | * |
---|
202 | */ |
---|
203 | private void calculateStatistics(ITaskInstance taskInstance, |
---|
204 | IUserSession session, |
---|
205 | TextInputStatistics statistics) |
---|
206 | { |
---|
207 | if (isTextInput(taskInstance)) { |
---|
208 | calculateStatistics((IEventTaskInstance) taskInstance, session, statistics); |
---|
209 | } |
---|
210 | else { |
---|
211 | if (taskInstance instanceof ISequenceInstance) { |
---|
212 | for (ITaskInstance child : (ISequenceInstance) taskInstance) { |
---|
213 | calculateStatistics(child, session, statistics); |
---|
214 | } |
---|
215 | } |
---|
216 | else if (taskInstance instanceof IIterationInstance) { |
---|
217 | for (ITaskInstance child : (IIterationInstance) taskInstance) { |
---|
218 | calculateStatistics(child, session, statistics); |
---|
219 | } |
---|
220 | } |
---|
221 | else if (taskInstance instanceof ISelectionInstance) { |
---|
222 | calculateStatistics |
---|
223 | (((ISelectionInstance) taskInstance).getChild(), session, statistics); |
---|
224 | } |
---|
225 | else if (taskInstance instanceof IOptionalInstance) { |
---|
226 | calculateStatistics |
---|
227 | (((IOptionalInstance) taskInstance).getChild(), session, statistics); |
---|
228 | } |
---|
229 | else{ |
---|
230 | statistics.incrementNoOfOtherEventTasks(); |
---|
231 | } |
---|
232 | } |
---|
233 | } |
---|
234 | |
---|
235 | /** |
---|
236 | * |
---|
237 | */ |
---|
238 | private boolean isTextInput(ITaskInstance taskInstance) { |
---|
239 | if (taskInstance instanceof IEventTaskInstance) { |
---|
240 | return ((IEventTaskInstance) taskInstance).getEvent().getType() instanceof TextInput; |
---|
241 | } |
---|
242 | |
---|
243 | return false; |
---|
244 | } |
---|
245 | |
---|
246 | /** |
---|
247 | * |
---|
248 | */ |
---|
249 | private void calculateStatistics(IEventTaskInstance taskInstance, |
---|
250 | IUserSession session, |
---|
251 | TextInputStatistics statistics) |
---|
252 | { |
---|
253 | IEventType type = taskInstance.getEvent().getType(); |
---|
254 | IEventTarget target = taskInstance.getEvent().getTarget(); |
---|
255 | |
---|
256 | if (type instanceof TextInput) { |
---|
257 | if (target instanceof ITextField) { |
---|
258 | statistics.addTextFieldInput(taskInstance, session); |
---|
259 | } |
---|
260 | else if (target instanceof ITextArea) { |
---|
261 | statistics.addTextAreaInput(taskInstance, session); |
---|
262 | } |
---|
263 | } |
---|
264 | } |
---|
265 | |
---|
266 | /** |
---|
267 | * |
---|
268 | */ |
---|
269 | /* private static String[] determineTextFragments(String enteredText) { |
---|
270 | List<String> fragments = new ArrayList<String>(); |
---|
271 | |
---|
272 | StringBuffer fragment = new StringBuffer(); |
---|
273 | char lastChar = 0; |
---|
274 | |
---|
275 | for (int i = 0; i < enteredText.length(); i++) { |
---|
276 | char currentChar = enteredText.charAt(i); |
---|
277 | |
---|
278 | if (!isEqualCharacterType(lastChar, currentChar)) { |
---|
279 | // the previous fragment ended. so finalize it and start a new one |
---|
280 | if ((fragment != null) && (fragment.length() > 0)) { |
---|
281 | String fragmentStr = fragment.toString().trim(); |
---|
282 | |
---|
283 | if (!"".equals(fragmentStr)) { |
---|
284 | fragments.add(fragmentStr); |
---|
285 | } |
---|
286 | |
---|
287 | fragment = new StringBuffer(); |
---|
288 | } |
---|
289 | } |
---|
290 | |
---|
291 | fragment.append(currentChar); |
---|
292 | lastChar = currentChar; |
---|
293 | } |
---|
294 | |
---|
295 | if ((fragment != null) && (fragment.length() > 0)) { |
---|
296 | String fragmentStr = fragment.toString().trim(); |
---|
297 | |
---|
298 | if (!"".equals(fragmentStr)) { |
---|
299 | fragments.add(fragmentStr); |
---|
300 | } |
---|
301 | } |
---|
302 | |
---|
303 | return fragments.toArray(new String[fragments.size()]); |
---|
304 | } |
---|
305 | |
---|
306 | /** |
---|
307 | * |
---|
308 | */ |
---|
309 | /* private static boolean isEqualCharacterType(char char1, char char2) { |
---|
310 | return |
---|
311 | ((char1 == char2) || |
---|
312 | (Character.isWhitespace(char1) && Character.isWhitespace(char2)) || |
---|
313 | (Character.isDigit(char1) && Character.isDigit(char2)) || |
---|
314 | (Character.isLetter(char1) && Character.isLetter(char2)) || |
---|
315 | (Character.isJavaIdentifierPart(char1) && Character.isJavaIdentifierPart(char2))); |
---|
316 | }*/ |
---|
317 | |
---|
318 | /** |
---|
319 | * |
---|
320 | */ |
---|
321 | private static class TextInputStatistics { |
---|
322 | |
---|
323 | /** */ |
---|
324 | private List<IEventTaskInstance> textFieldInputs = new ArrayList<IEventTaskInstance>(); |
---|
325 | |
---|
326 | /** */ |
---|
327 | private Map<ITextField, List<String>> textFields = new HashMap<ITextField, List<String>>(); |
---|
328 | |
---|
329 | /** */ |
---|
330 | private List<IEventTaskInstance> textAreaInputs = new ArrayList<IEventTaskInstance>(); |
---|
331 | |
---|
332 | /** */ |
---|
333 | private Map<IUserSession, Map<String, TextEntryData>> textEntries = |
---|
334 | new HashMap<IUserSession, Map<String, TextEntryData>>(); |
---|
335 | |
---|
336 | /** */ |
---|
337 | private int otherEventsCount; |
---|
338 | |
---|
339 | /** |
---|
340 | * |
---|
341 | */ |
---|
342 | private void addTextFieldInput(IEventTaskInstance instance, IUserSession session) { |
---|
343 | String enteredText = ((TextInput) instance.getEvent().getType()).getEnteredText(); |
---|
344 | |
---|
345 | if ((enteredText != null) && (!"".equals(enteredText.trim()))) { |
---|
346 | enteredText = enteredText.trim(); |
---|
347 | |
---|
348 | textFieldInputs.add(instance); |
---|
349 | |
---|
350 | // store text entries into text fields |
---|
351 | List<String> entries = textFields.get(instance.getEvent().getTarget()); |
---|
352 | |
---|
353 | if (entries == null) { |
---|
354 | entries = new LinkedList<String>(); |
---|
355 | textFields.put((ITextField) instance.getEvent().getTarget(), entries); |
---|
356 | } |
---|
357 | |
---|
358 | entries.add(enteredText); |
---|
359 | |
---|
360 | // writing down all text entries in text fields to check later for cooccurrences in |
---|
361 | // same session |
---|
362 | Map<String, TextEntryData> sessionTextEntries = textEntries.get(session); |
---|
363 | |
---|
364 | if (sessionTextEntries == null) { |
---|
365 | sessionTextEntries = new HashMap<String, TextEntryData>(); |
---|
366 | textEntries.put(session, sessionTextEntries); |
---|
367 | } |
---|
368 | |
---|
369 | TextEntryData data = sessionTextEntries.get(enteredText); |
---|
370 | |
---|
371 | if (data == null) { |
---|
372 | data = new TextEntryData(enteredText); |
---|
373 | sessionTextEntries.put(enteredText, data); |
---|
374 | } |
---|
375 | |
---|
376 | data.addTaskInstance(instance); |
---|
377 | } |
---|
378 | } |
---|
379 | |
---|
380 | /** |
---|
381 | * |
---|
382 | */ |
---|
383 | public List<String> getAllInputsInto(ITextField textField) { |
---|
384 | return textFields.get(textField); |
---|
385 | } |
---|
386 | |
---|
387 | /** |
---|
388 | * |
---|
389 | */ |
---|
390 | private int getUsageCount(ITextField textField) { |
---|
391 | List<String> entries = textFields.get(textField); |
---|
392 | |
---|
393 | if (entries == null) { |
---|
394 | return 0; |
---|
395 | } |
---|
396 | else { |
---|
397 | return entries.size(); |
---|
398 | } |
---|
399 | } |
---|
400 | |
---|
401 | /** |
---|
402 | * |
---|
403 | */ |
---|
404 | private List<TextFieldCorrelation> determineTextFieldCorrelations() { |
---|
405 | System.out.print("determining text field correlations of " + textFields.size() + |
---|
406 | " text fields ... "); |
---|
407 | List<TextFieldCorrelation> correlations = new ArrayList<TextFieldCorrelation>(); |
---|
408 | |
---|
409 | // we need an ordered list of text fields to be able compare all with each other |
---|
410 | // through a nested loop |
---|
411 | List<ITextField> textFieldList = getAllTextFields(); |
---|
412 | |
---|
413 | List<TextEntryData> relevantTextEntryData = new LinkedList<TextEntryData>(); |
---|
414 | |
---|
415 | for (Map<String, TextEntryData> sessionSpecEntries : textEntries.values()) { |
---|
416 | for (TextEntryData data : sessionSpecEntries.values()) { |
---|
417 | if (data.textFields.size() > 1) { |
---|
418 | relevantTextEntryData.add(data); |
---|
419 | } |
---|
420 | } |
---|
421 | } |
---|
422 | |
---|
423 | for (int i = 0; i < (textFieldList.size() - 1); i++) { |
---|
424 | for (int j = i + 1; j < textFieldList.size(); j++) { |
---|
425 | // count the number of times, in which the same text was entered in both |
---|
426 | // text fields within the same session |
---|
427 | List<String> sameEnteredTexts = new LinkedList<String>(); |
---|
428 | |
---|
429 | for (TextEntryData data : relevantTextEntryData) { |
---|
430 | if (data.textFields.contains(textFieldList.get(i)) && |
---|
431 | data.textFields.contains(textFieldList.get(j))) |
---|
432 | { |
---|
433 | sameEnteredTexts.add(data.enteredText); |
---|
434 | } |
---|
435 | } |
---|
436 | |
---|
437 | if (sameEnteredTexts.size() > 0) { |
---|
438 | // for the checked combination of text fields, there is at least once |
---|
439 | // the same text entered into both text fields during the same session |
---|
440 | correlations.add(new TextFieldCorrelation(textFieldList.get(i), |
---|
441 | textFieldList.get(j), |
---|
442 | sameEnteredTexts)); |
---|
443 | } |
---|
444 | } |
---|
445 | } |
---|
446 | |
---|
447 | System.out.println("done"); |
---|
448 | |
---|
449 | return correlations; |
---|
450 | } |
---|
451 | |
---|
452 | /** |
---|
453 | * |
---|
454 | */ |
---|
455 | private void addTextAreaInput(IEventTaskInstance instance, IUserSession session) { |
---|
456 | textAreaInputs.add(instance); |
---|
457 | } |
---|
458 | |
---|
459 | /** |
---|
460 | * |
---|
461 | */ |
---|
462 | private int getNoOfAllEvents() { |
---|
463 | return textFieldInputs.size() + textAreaInputs.size() + otherEventsCount; |
---|
464 | } |
---|
465 | |
---|
466 | /** |
---|
467 | * |
---|
468 | */ |
---|
469 | private int getNoOfTextFieldInputs() { |
---|
470 | return textFieldInputs.size(); |
---|
471 | } |
---|
472 | |
---|
473 | /** |
---|
474 | * |
---|
475 | */ |
---|
476 | private int getNoOfTextAreaInputs() { |
---|
477 | return textAreaInputs.size(); |
---|
478 | } |
---|
479 | |
---|
480 | /** |
---|
481 | * |
---|
482 | */ |
---|
483 | private void incrementNoOfOtherEventTasks() { |
---|
484 | otherEventsCount++; |
---|
485 | } |
---|
486 | |
---|
487 | /** |
---|
488 | * |
---|
489 | */ |
---|
490 | private List<ITextField> getAllTextFields() { |
---|
491 | List<ITextField> textFieldList = new ArrayList<ITextField>(textFields.size()); |
---|
492 | |
---|
493 | for (ITextField textField : textFields.keySet()) { |
---|
494 | textFieldList.add(textField); |
---|
495 | } |
---|
496 | |
---|
497 | return textFieldList; |
---|
498 | } |
---|
499 | } |
---|
500 | |
---|
501 | /** |
---|
502 | * |
---|
503 | */ |
---|
504 | private static class TextEntryData { |
---|
505 | |
---|
506 | /** */ |
---|
507 | private String enteredText; |
---|
508 | |
---|
509 | /** */ |
---|
510 | private List<IEventTaskInstance> respectiveTaskInstances = |
---|
511 | new LinkedList<IEventTaskInstance>(); |
---|
512 | |
---|
513 | /** */ |
---|
514 | private Set<ITextField> textFields = new HashSet<ITextField>(); |
---|
515 | |
---|
516 | /** |
---|
517 | * |
---|
518 | */ |
---|
519 | private TextEntryData(String text) { |
---|
520 | this.enteredText = text; |
---|
521 | } |
---|
522 | |
---|
523 | /** |
---|
524 | * |
---|
525 | */ |
---|
526 | private void addTaskInstance(IEventTaskInstance instance) { |
---|
527 | respectiveTaskInstances.add(instance); |
---|
528 | textFields.add((ITextField) instance.getEvent().getTarget()); |
---|
529 | } |
---|
530 | |
---|
531 | } |
---|
532 | |
---|
533 | /** |
---|
534 | * |
---|
535 | */ |
---|
536 | private static class TextFieldCorrelation { |
---|
537 | |
---|
538 | /** */ |
---|
539 | private List<String> enteredTexts = new LinkedList<String>(); |
---|
540 | |
---|
541 | /** */ |
---|
542 | private ITextField textField1; |
---|
543 | |
---|
544 | /** */ |
---|
545 | private ITextField textField2; |
---|
546 | |
---|
547 | /** |
---|
548 | * |
---|
549 | */ |
---|
550 | private TextFieldCorrelation(ITextField textField1, |
---|
551 | ITextField textField2, |
---|
552 | List<String> enteredTexts) |
---|
553 | { |
---|
554 | this.textField1 = textField1; |
---|
555 | this.textField2 = textField2; |
---|
556 | this.enteredTexts = enteredTexts; |
---|
557 | } |
---|
558 | |
---|
559 | } |
---|
560 | |
---|
561 | } |
---|