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.text.DecimalFormat; |
---|
18 | import java.util.Collection; |
---|
19 | import java.util.HashMap; |
---|
20 | import java.util.Map; |
---|
21 | |
---|
22 | import de.ugoe.cs.autoquest.eventcore.IEventType; |
---|
23 | import de.ugoe.cs.autoquest.eventcore.gui.Scroll; |
---|
24 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IEventTaskInstance; |
---|
25 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IIterationInstance; |
---|
26 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IOptionalInstance; |
---|
27 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISelectionInstance; |
---|
28 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequence; |
---|
29 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequenceInstance; |
---|
30 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITask; |
---|
31 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskInstance; |
---|
32 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskModel; |
---|
33 | |
---|
34 | /** |
---|
35 | * TODO comment |
---|
36 | * |
---|
37 | * @version $Revision: $ $Date: 16.07.2012$ |
---|
38 | * @author 2012, last modified by $Author: pharms$ |
---|
39 | */ |
---|
40 | public class RequiredScrollRule implements UsabilityEvaluationRule { |
---|
41 | |
---|
42 | /* |
---|
43 | * (non-Javadoc) |
---|
44 | * |
---|
45 | * @see de.ugoe.cs.usability.UsabilityEvaluationRule#evaluate(TaskTree) |
---|
46 | */ |
---|
47 | @Override |
---|
48 | public UsabilityEvaluationResult evaluate(ITaskModel taskModel) { |
---|
49 | Map<ITask, Integer> smellingTasks = getTasksStartingWithScroll(taskModel.getTasks()); |
---|
50 | |
---|
51 | UsabilityEvaluationResult results = new UsabilityEvaluationResult(); |
---|
52 | analyzeTasksStartingWithScroll(smellingTasks, results); |
---|
53 | |
---|
54 | return results; |
---|
55 | } |
---|
56 | |
---|
57 | /** |
---|
58 | * |
---|
59 | */ |
---|
60 | private void analyzeTasksStartingWithScroll(Map<ITask, Integer> smellingTasks, |
---|
61 | UsabilityEvaluationResult results) |
---|
62 | { |
---|
63 | |
---|
64 | for (Map.Entry<ITask, Integer> entry : smellingTasks.entrySet()) { |
---|
65 | float ratio = entry.getValue() / (float) entry.getKey().getInstances().size(); |
---|
66 | |
---|
67 | UsabilityDefectSeverity severity = null; |
---|
68 | if (ratio > 0.9) { |
---|
69 | severity = UsabilityDefectSeverity.HIGH; |
---|
70 | } |
---|
71 | else if (ratio > 0.6) { |
---|
72 | severity = UsabilityDefectSeverity.MEDIUM; |
---|
73 | } |
---|
74 | else if (ratio > 0.4) { |
---|
75 | severity = UsabilityDefectSeverity.LOW; |
---|
76 | } |
---|
77 | else if (ratio > 0.2) { |
---|
78 | severity = UsabilityDefectSeverity.INFO; |
---|
79 | } |
---|
80 | |
---|
81 | if (severity != null) { |
---|
82 | Map<String, String> parameters = new HashMap<String, String>(); |
---|
83 | parameters.put("task", entry.getKey().toString()); |
---|
84 | parameters.put("scrollRatio", DecimalFormat.getInstance().format(ratio * 100)); |
---|
85 | |
---|
86 | results.addDefect(severity, UsabilityDefectDescription.SCROLL_REQUIRED, parameters); |
---|
87 | } |
---|
88 | } |
---|
89 | } |
---|
90 | |
---|
91 | /** |
---|
92 | * |
---|
93 | */ |
---|
94 | private Map<ITask, Integer> getTasksStartingWithScroll(Collection<ITask> tasks) { |
---|
95 | Map<ITask, Integer> scrollCounts = new HashMap<ITask, Integer>(); |
---|
96 | |
---|
97 | for (ITask task : tasks) { |
---|
98 | // only sequences are important for required scrolls |
---|
99 | if (task instanceof ISequence) { |
---|
100 | int count = countInstancesStartingWithScroll(task); |
---|
101 | if (count > 0) { |
---|
102 | scrollCounts.put(task, count); |
---|
103 | } |
---|
104 | } |
---|
105 | } |
---|
106 | |
---|
107 | return scrollCounts; |
---|
108 | } |
---|
109 | |
---|
110 | /** |
---|
111 | * |
---|
112 | */ |
---|
113 | private int countInstancesStartingWithScroll(ITask task) { |
---|
114 | Collection<ITaskInstance> instances = task.getInstances(); |
---|
115 | |
---|
116 | int counter = 0; |
---|
117 | for (ITaskInstance instance : instances) { |
---|
118 | if (startsWithScroll(instance)) { |
---|
119 | counter++; |
---|
120 | } |
---|
121 | } |
---|
122 | |
---|
123 | return counter; |
---|
124 | } |
---|
125 | |
---|
126 | /** |
---|
127 | * |
---|
128 | */ |
---|
129 | private boolean startsWithScroll(ITaskInstance instance) { |
---|
130 | if (instance instanceof ISequenceInstance) { |
---|
131 | ITaskInstance firstChild = ((ISequenceInstance) instance).size() > 1 ? |
---|
132 | ((ISequenceInstance) instance).get(0) : null; |
---|
133 | |
---|
134 | if (firstChild == null) { |
---|
135 | throw new IllegalArgumentException |
---|
136 | ("instance of a sequence must have at least two children"); |
---|
137 | } |
---|
138 | |
---|
139 | if (startsWithScroll(firstChild)) { |
---|
140 | return true; |
---|
141 | } |
---|
142 | } |
---|
143 | else if (instance instanceof ISelectionInstance) { |
---|
144 | ITaskInstance child = ((ISelectionInstance) instance).getChild(); |
---|
145 | |
---|
146 | if (child != null) { |
---|
147 | return startsWithScroll(child); |
---|
148 | } |
---|
149 | else { |
---|
150 | throw new IllegalArgumentException("instance of a selection must have a child"); |
---|
151 | } |
---|
152 | } |
---|
153 | else if (instance instanceof IIterationInstance) { |
---|
154 | ITaskInstance firstChild = ((IIterationInstance) instance).size() > 0 ? |
---|
155 | ((IIterationInstance) instance).get(0) : null; |
---|
156 | |
---|
157 | if (firstChild == null) { |
---|
158 | throw new IllegalArgumentException |
---|
159 | ("instance of an iteration must have at least one child"); |
---|
160 | } |
---|
161 | |
---|
162 | if (startsWithScroll(firstChild)) { |
---|
163 | return true; |
---|
164 | } |
---|
165 | } |
---|
166 | else if (instance instanceof IOptionalInstance) { |
---|
167 | ITaskInstance child = ((IOptionalInstance) instance).getChild(); |
---|
168 | |
---|
169 | if (child != null) { |
---|
170 | return startsWithScroll(child); |
---|
171 | } |
---|
172 | } |
---|
173 | else if (isScroll(instance)) { |
---|
174 | return true; |
---|
175 | } |
---|
176 | |
---|
177 | return false; |
---|
178 | } |
---|
179 | |
---|
180 | /** |
---|
181 | * @param firstChild |
---|
182 | * @return |
---|
183 | */ |
---|
184 | private boolean isScroll(ITaskInstance instance) { |
---|
185 | ITaskInstance instanceToCheck = instance; |
---|
186 | |
---|
187 | if (instanceToCheck instanceof IIterationInstance) { |
---|
188 | instanceToCheck = ((IIterationInstance) instanceToCheck).size() > 0 ? |
---|
189 | ((IIterationInstance) instanceToCheck).get(0) : null; |
---|
190 | |
---|
191 | if (instanceToCheck == null) { |
---|
192 | throw new IllegalArgumentException |
---|
193 | ("instance of an iteration must have at least one child"); |
---|
194 | } |
---|
195 | } |
---|
196 | |
---|
197 | if (instanceToCheck instanceof IEventTaskInstance) { |
---|
198 | IEventType type = ((IEventTaskInstance) instanceToCheck).getEvent().getType(); |
---|
199 | |
---|
200 | return (type instanceof Scroll); |
---|
201 | } |
---|
202 | |
---|
203 | return false; |
---|
204 | } |
---|
205 | |
---|
206 | } |
---|