[1069] | 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.htmlmonitor; |
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| 16 | |
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| 17 | import java.security.MessageDigest; |
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| 18 | import java.security.NoSuchAlgorithmException; |
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| 19 | import java.util.HashMap; |
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| 20 | import java.util.LinkedList; |
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| 21 | import java.util.List; |
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| 22 | import java.util.Map; |
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| 23 | |
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| 24 | import org.apache.commons.codec.binary.Base64; |
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| 25 | |
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| 26 | /** |
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| 27 | * <p> |
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| 28 | * TODO comment |
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| 29 | * </p> |
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| 30 | * |
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| 31 | * @author Patrick Harms |
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| 32 | */ |
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| 33 | class HtmlGUIElementManager { |
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| 34 | |
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| 35 | /** */ |
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| 36 | private Map<String, HtmlGUIElement> idMap = new HashMap<String, HtmlGUIElement>(); |
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| 37 | |
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| 38 | /** */ |
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| 39 | private Map<String, List<HtmlPageElement>> domPathMap = |
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| 40 | new HashMap<String, List<HtmlPageElement>>(); |
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| 41 | |
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| 42 | /** |
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| 43 | * <p> |
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| 44 | * TODO: comment |
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| 45 | * </p> |
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| 46 | * |
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| 47 | */ |
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| 48 | HtmlServer createHtmlServer(String name, int port) { |
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| 49 | if (name == null) { |
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| 50 | throw new IllegalArgumentException("name must not be null"); |
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| 51 | } |
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| 52 | |
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| 53 | String id = calculateId(name, Integer.toString(port)); |
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| 54 | |
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| 55 | HtmlGUIElement server = idMap.get(id); |
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| 56 | |
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| 57 | if (server == null) { |
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| 58 | server = new HtmlServer(id, name, port); |
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| 59 | idMap.put(id, server); |
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| 60 | } |
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| 61 | else if (!(server instanceof HtmlServer)) { |
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| 62 | throw new RuntimeException |
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| 63 | ("id conflict: calculated the same id for two different GUI elements"); |
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| 64 | } |
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| 65 | |
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| 66 | return (HtmlServer) server; |
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| 67 | } |
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| 68 | |
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| 69 | /** |
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| 70 | * <p> |
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| 71 | * TODO: comment |
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| 72 | * </p> |
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| 73 | * |
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| 74 | */ |
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| 75 | HtmlDocument createHtmlDocument(HtmlServer server, String path, String query, String title) { |
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| 76 | if (server == null) { |
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| 77 | throw new IllegalArgumentException("server must not be null"); |
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| 78 | } |
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| 79 | if (path == null) { |
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| 80 | throw new IllegalArgumentException("path must not be null"); |
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| 81 | } |
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| 82 | |
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| 83 | String id = calculateId(server.getId(), path, query, title); |
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| 84 | |
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| 85 | HtmlGUIElement document = idMap.get(id); |
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| 86 | |
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| 87 | if (document == null) { |
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| 88 | document = new HtmlDocument(id, server, path, query, title); |
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| 89 | idMap.put(id, document); |
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| 90 | } |
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| 91 | else if (!(document instanceof HtmlDocument)) { |
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| 92 | throw new RuntimeException |
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| 93 | ("id conflict: calculated the same id for two different GUI elements"); |
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| 94 | } |
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| 95 | |
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| 96 | return (HtmlDocument) document; |
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| 97 | } |
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| 98 | |
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| 99 | /** |
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| 100 | * <p> |
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| 101 | * TODO: comment |
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| 102 | * </p> |
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| 103 | * |
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| 104 | * @param document |
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| 105 | * @param parent |
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| 106 | * @param tagName |
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| 107 | * @param htmlid |
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| 108 | * @param index |
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| 109 | * @return |
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| 110 | */ |
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| 111 | HtmlPageElement createHtmlPageElement(HtmlDocument document, |
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| 112 | HtmlPageElement parent, |
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| 113 | String tagName, |
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| 114 | String htmlId, |
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| 115 | Integer index) |
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| 116 | { |
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| 117 | if (document == null) { |
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| 118 | throw new IllegalArgumentException("document must not be null"); |
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| 119 | } |
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| 120 | if (tagName == null) { |
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| 121 | throw new IllegalArgumentException("document must not be null"); |
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| 122 | } |
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| 123 | |
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| 124 | String id = calculateId |
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| 125 | (document.getId(), parent != null ? parent.getDOMPath() : null, tagName, htmlId, |
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| 126 | index != null ? index.toString() : "-1"); |
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| 127 | |
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| 128 | HtmlGUIElement pageElement = idMap.get(id); |
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| 129 | |
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| 130 | if (pageElement == null) { |
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| 131 | pageElement = new HtmlPageElement(id, document, parent, tagName, htmlId, index); |
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| 132 | idMap.put(id, pageElement); |
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| 133 | } |
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| 134 | else if (!(pageElement instanceof HtmlPageElement)) { |
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| 135 | throw new RuntimeException |
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| 136 | ("id conflict: calculated the same id for two different GUI elements"); |
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| 137 | } |
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| 138 | |
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| 139 | List<HtmlPageElement> candidates = |
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| 140 | domPathMap.get(((HtmlPageElement) pageElement).getDOMPath()); |
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| 141 | |
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| 142 | if (candidates == null) { |
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| 143 | candidates = new LinkedList<HtmlPageElement>(); |
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| 144 | domPathMap.put(((HtmlPageElement) pageElement).getDOMPath(), candidates); |
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| 145 | } |
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| 146 | |
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| 147 | if (!candidates.contains(pageElement)) { |
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| 148 | candidates.add((HtmlPageElement) pageElement); |
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| 149 | } |
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| 150 | |
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| 151 | return (HtmlPageElement) pageElement; |
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| 152 | } |
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| 153 | |
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| 154 | /** |
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| 155 | * <p> |
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| 156 | * TODO: comment |
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| 157 | * </p> |
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| 158 | * |
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| 159 | * @param document |
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| 160 | * @param domPath |
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| 161 | * @return |
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| 162 | */ |
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| 163 | HtmlPageElement getPageElement(HtmlDocument document, String domPath) { |
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| 164 | List<HtmlPageElement> candidates = domPathMap.get(domPath); |
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| 165 | |
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| 166 | if (candidates != null) { |
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| 167 | for (HtmlPageElement candidate : candidates) { |
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| 168 | if (document.equals(candidate.getDocument())) { |
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| 169 | return candidate; |
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| 170 | } |
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| 171 | } |
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| 172 | } |
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| 173 | |
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| 174 | return null; |
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| 175 | } |
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| 176 | |
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| 177 | /** |
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| 178 | * <p> |
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| 179 | * TODO: comment |
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| 180 | * </p> |
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| 181 | * |
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| 182 | * @param name |
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| 183 | * @param string |
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| 184 | * @return |
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| 185 | */ |
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| 186 | private String calculateId(String... fragments) { |
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| 187 | try { |
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| 188 | MessageDigest md = MessageDigest.getInstance("SHA-512"); |
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| 189 | |
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| 190 | for (String fragment : fragments) { |
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| 191 | if (fragment != null) { |
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| 192 | md.update(fragment.getBytes()); |
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| 193 | } |
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| 194 | } |
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| 195 | |
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| 196 | return Base64.encodeBase64String(md.digest()); |
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| 197 | } |
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| 198 | catch (NoSuchAlgorithmException e) { |
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| 199 | throw new IllegalStateException("Java VM does not support this code"); |
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| 200 | } |
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| 201 | } |
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| 202 | |
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| 203 | } |
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