[1150] | 1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany
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| 2 | //
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| 3 | // Licensed under the Apache License, Version 2.0 (the "License");
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| 4 | // you may not use this file except in compliance with the License.
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| 5 | // You may obtain a copy of the License at
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| 6 | //
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| 7 | // http://www.apache.org/licenses/LICENSE-2.0
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| 8 | //
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| 9 | // Unless required by applicable law or agreed to in writing, software
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| 10 | // distributed under the License is distributed on an "AS IS" BASIS,
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| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 12 | // See the License for the specific language governing permissions and
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| 13 | // limitations under the License.
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| 14 |
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| 15 | package de.ugoe.cs.autoquest.usability.util;
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| 16 |
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[1217] | 17 | import java.util.Collection;
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[1150] | 18 |
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| 19 | import com.google.common.collect.Iterables;
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| 20 |
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[1152] | 21 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITask;
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[1217] | 22 | import de.ugoe.cs.autoquest.usability.rules.patterns.InteractionPatternVisitor;
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[1150] | 23 |
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| 24 | /**
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| 25 | * <p>
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[1217] | 26 | * Util class for {@link InteractionPatternVisitor}.
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[1150] | 27 | * </p>
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| 28 | *
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| 29 | * @author Alexander Deicke
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| 30 | */
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| 31 | public class PatternsVisitorUtil {
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| 32 |
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| 33 | private PatternsVisitorUtil() {
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| 34 | // no instantiation
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| 35 | }
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[1217] | 36 |
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[1150] | 37 | /**
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| 38 | * <p>
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[1217] | 39 | * Gets the first sub task.
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[1150] | 40 | * </p>
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[1217] | 41 | *
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| 42 | * @param tasks
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| 43 | * collection of tasks
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| 44 | * @return first sub task
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[1150] | 45 | */
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[1217] | 46 | public static ITask firstSubtaskOf(Collection<ITask> tasks) {
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[1164] | 47 | return Iterables.getFirst(tasks, new NullTask());
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[1150] | 48 | }
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| 49 |
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| 50 | /**
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| 51 | * <p>
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[1217] | 52 | * Gets the last sub task.
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[1150] | 53 | * </p>
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[1217] | 54 | *
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| 55 | * @param tasks
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| 56 | * collection of tasks
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| 57 | * @return last sub task
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[1150] | 58 | */
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[1217] | 59 | public static ITask lastSubTaskOf(Collection<ITask> tasks) {
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[1164] | 60 | return Iterables.getLast(tasks, new NullTask());
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[1150] | 61 | }
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[1217] | 62 |
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[1150] | 63 | }
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