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.logging.Level;
|
---|
18 |
|
---|
19 | import com.google.common.base.Optional;
|
---|
20 |
|
---|
21 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskModel;
|
---|
22 | import de.ugoe.cs.autoquest.usability.result.UsabilityProblemDescription;
|
---|
23 | import de.ugoe.cs.autoquest.usability.rules.UsabilityResult;
|
---|
24 | import de.ugoe.cs.autoquest.usability.rules.UsabilityRule;
|
---|
25 | import de.ugoe.cs.autoquest.usability.rules.UsabilityRuleset;
|
---|
26 | import de.ugoe.cs.util.console.Console;
|
---|
27 |
|
---|
28 | /**
|
---|
29 | * <p>
|
---|
30 | * The usability evaluator is responsible for performing a usability evaluation on a task model.
|
---|
31 | * Therefore he uses a {@link UsabilityRuleset}.
|
---|
32 | * </p>
|
---|
33 | *
|
---|
34 | * @author Alexander Deicke
|
---|
35 | */
|
---|
36 | public class UsabilityEvaluator {
|
---|
37 |
|
---|
38 | /**
|
---|
39 | * <p>
|
---|
40 | * The task model, which should be evaluated.
|
---|
41 | * </p>
|
---|
42 | */
|
---|
43 | private ITaskModel taskModel;
|
---|
44 |
|
---|
45 | private UsabilityEvaluator(ITaskModel taskModel) {
|
---|
46 | this.taskModel = taskModel;
|
---|
47 | }
|
---|
48 |
|
---|
49 | /**
|
---|
50 | * <p>
|
---|
51 | * Creates and initializes a new instance.
|
---|
52 | * </p>
|
---|
53 | *
|
---|
54 | * @param taskModel
|
---|
55 | * task model, which is subject of usability evaluation
|
---|
56 | * @return instance of {@link UsabilityEvaluator}
|
---|
57 | */
|
---|
58 | public static UsabilityEvaluator evaluate(ITaskModel taskModel) {
|
---|
59 | return new UsabilityEvaluator(taskModel);
|
---|
60 | }
|
---|
61 |
|
---|
62 | /**
|
---|
63 | * <p>
|
---|
64 | * Starts usability evaluation, using given {@link UsabilityRuleset}.
|
---|
65 | * </p>
|
---|
66 | *
|
---|
67 | * @param ruleset
|
---|
68 | * {@link UsabilityRuleset} used for usability evaluation
|
---|
69 | * @return result of usability evaluation as {@link UsabilityResult}
|
---|
70 | */
|
---|
71 | public UsabilityResult using(UsabilityRuleset ruleset) {
|
---|
72 | Console.traceln(Level.INFO, "evaluating usability of task tree " + this.taskModel);
|
---|
73 | EvaluationMethodCaller evaluationMethodCaller = new EvaluationMethodCaller();
|
---|
74 | UsabilityResult result = new UsabilityResult();
|
---|
75 | for (UsabilityRule rule : ruleset.evaluationRules()) {
|
---|
76 | Optional<UsabilityProblemDescription> defect =
|
---|
77 | rule.callEvaluationMethod(evaluationMethodCaller);
|
---|
78 | if (defect.isPresent()) {
|
---|
79 | result.addProblem(defect.get());
|
---|
80 | }
|
---|
81 | }
|
---|
82 | return result;
|
---|
83 | }
|
---|
84 |
|
---|
85 | }
|
---|