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19 package org.netbeans.server.uihandler;
20
21 import org.netbeans.server.uihandler.statistics.*;
22 import org.netbeans.server.uihandler.*;
23 import java.io.IOException  ;
24 import java.io.InputStream ;
25 import java.net.MalformedURLException ;
26 import java.net.URL ;
27 import java.util.ArrayList ;
28 import java.util.Collections ;
29 import java.util.HashMap ;
30 import java.util.LinkedList ;
31 import java.util.List ;
32 import java.util.Map ;
33 import java.util.Queue ;
34 import java.util.Random ;
35 import java.util.logging.Level ;
36 import java.util.logging.Logger ;
37 import javax.xml.parsers.ParserConfigurationException ;
38 import javax.xml.parsers.SAXParser ;
39 import javax.xml.parsers.SAXParserFactory ;
40 import org.openide.util.Exceptions;
41 import org.openide.util.RequestProcessor;
42 import org.xml.sax.Attributes ;
43 import org.xml.sax.SAXException ;
44 import org.xml.sax.helpers.DefaultHandler ;
45
46
52 public final class TipOfTheDay implements Runnable {
53 private static final Logger LOG = Logger.getLogger(TipOfTheDay.class.getName());
54 private static RequestProcessor RP = new RequestProcessor("Refresh TipOfTheDay");
55
56 private Map <String ,List <Tip>> tips;
57 private final URL url;
58 private RequestProcessor.Task refresh;
59
60 private TipOfTheDay(URL url) {
61 this.url = url;
62 if (url == null) {
63 tips = Collections.emptyMap();
64 return;
65 }
66 tips = Collections.emptyMap();
67
68 refresh = RP.create(this);
69 refresh.schedule(0);
70
71 try {
72 refresh.waitFinished(10000);
73 } catch (InterruptedException ex) {
74 LOG.log(Level.WARNING, ex.getMessage(), ex);
75 }
76 }
77
78
81 public static TipOfTheDay create(URL url) {
82 return new TipOfTheDay(url);
83 }
84
85 private static TipOfTheDay DEFAULT;
86
88 public static TipOfTheDay getDefault() {
89 if (DEFAULT == null) {
90 String tips = Utils.getVariable("tipsOfTheDay", String .class);
91 if (tips != null) {
92 try {
93 DEFAULT = new TipOfTheDay(new URL (tips));
94 } catch (MalformedURLException ex) {
95 LOG.log(Level.WARNING, ex.getMessage(), ex);
96 }
97 }
98 if (DEFAULT == null) {
99 return new TipOfTheDay(null);
100 }
101 }
102 return DEFAULT;
103 }
104
105
108 public void run() {
109 LOG.info("Refreshing content of TipOfTheDay: " + url); try {
111 Parser p = new Parser ();
112 tips = p.parse(url);
113 return;
114 } catch (SAXException ex) {
115 LOG.log(Level.WARNING, ex.getMessage(), ex);
116 } catch (ParserConfigurationException ex) {
117 LOG.log(Level.WARNING, ex.getMessage(), ex);
118 } catch (IOException ex) {
119 LOG.log(Level.WARNING, ex.getMessage(), ex);
120 } finally {
121 LOG.info("Done refreshing of TipOfTheDay"); refresh.schedule(60 * 1000 * 60);
123 }
124 }
125
126
130 public Tip find(ProjectTypes.Counts cnts) {
131 List <? extends Tip> all = findAll(cnts);
132 if (all.isEmpty()) {
133 return null;
134 }
135 int r = new Random ().nextInt(all.size());
136 return all.get(r);
137 }
138
139
141 public List <? extends Tip> findAll(ProjectTypes.Counts cnts) {
142 int max = -1;
143 List <Tip> found = Collections.emptyList();
144 if (cnts == null) {
145 return found;
146 }
147
148 for (Map.Entry <String , Integer > entry : cnts.getUsages()) {
149 if (entry.getValue() > max) {
150 List <Tip> f = tips.get(entry.getKey());
151 if (f != null) {
152 max = entry.getValue();
153 found = f;
154 }
155 }
156 }
157 return found;
158 }
159
160
161 static String findProject(String category) throws SAXException {
162 String ret = null;
163 if ("Web and Enterprise Development".equals(category)) { ret = "Ear"; }
166 if ("NetBeans Platform Development".equals(category)) { ret = "NbModule"; }
169 if ("Swing GUI Development".equals(category)) { ret = "j2se"; }
172 if ("Monitoring and Profiling".equals(category)) { ret = "profiler";
174 }
175 if ("Mobile Application Development".equals(category)) { ret = "J2ME"; }
178 if ("Advanced and Miscellaneous".equals(category)) { ret = "J2SE"; }
181 if ("Basic IDE Functionality".equals(category)) { ret = "J2SE"; }
184
185 if (ret == null) {
186 throw new SAXException ("Unexpected category: " + category);
187 }
188 return ret;
189 }
190
191
192
194 public static final class Tip {
195 String category;
196 String description;
197 String url;
198 String title;
199
200 public String getDescription() {
201 return description;
202 }
203
204 public String getUrl() {
205 return url;
206 }
207
208 public String getTitle() {
209 return title;
210 }
211 }
213
214
223 private static final class Parser extends DefaultHandler {
224 private Map <String ,List <Tip>> tips = new HashMap <String , List <TipOfTheDay.Tip>>();
225 private Tip current;
226 private Queue <StringBuilder > values = new LinkedList <StringBuilder >();
227
228 public Map <String ,List <Tip>> parse(URL url) throws SAXException , ParserConfigurationException , IOException {
229 SAXParserFactory f = SAXParserFactory.newInstance();
230 SAXParser p = f.newSAXParser();
231 InputStream is = url.openStream();
232 p.parse(is, this);
233 is.close();
234 return tips;
235 }
236
237 @Override
238 public void startElement(String uri, String local, String qName, Attributes args) throws SAXException {
239 if (LOG.isLoggable(Level.FINEST)) {
240 LOG.finest("startElement uri: " + uri + " local: " + local + " qName: " + qName); }
242 if (qName.equals("article")) {
243 assert current == null;
244 current = new Tip();
245 }
246
247 values.add(new StringBuilder ());
248 }
249
250 @Override
251 public void characters(char[] characters, int from, int len) throws SAXException {
252 assert !values.isEmpty();
253
254 StringBuilder value = values.peek();
255 if (LOG.isLoggable(Level.FINEST)) {
256 LOG.finest("characters: " + new String (characters, from, len)); }
258 value.append(characters, from, len);
259 }
260
261
262
263 @Override
264 public void endElement(String uri, String local, String qName) throws SAXException {
265 assert !values.isEmpty();
266
267 StringBuilder value = values.poll();
268 for (int i = 0; i < value.length(); i++) {
269 if (!Character.isWhitespace(value.charAt(i))) {
270 value.delete(0, i);
271 break;
272 }
273 }
274 for (int i = value.length() - 1; i > 0; i--) {
275 if (!Character.isWhitespace(value.charAt(i))) {
276 value.delete(i + 1, value.length());
277 break;
278 }
279 }
280
281 if (LOG.isLoggable(Level.FINEST)) {
282 LOG.finest("endElement uri: " + uri + " local: " + local + " qName: " + qName); }
284 if (qName.equals("article")) { assert current != null;
286 String prj = findProject(current.category);
287 List <Tip> arr = tips.get(prj);
288 if (arr == null) {
289 arr = new ArrayList <Tip>();
290 tips.put(prj, arr);
291 }
292 arr.add(current);
293 current = null;
294 return;
295 }
296
297 if (qName.equals("description")) { assert current != null;
299 assert value != null;
300 current.description = value.toString();
301 }
302
303 if (qName.equals("title")) { assert current != null;
305 assert value != null;
306 current.title = value.toString();
307 }
308
309 if (qName.equals("url")) { assert current != null;
311 assert value != null;
312 current.url = value.toString();
313 }
314
315 if (qName.equals("category")) { assert current != null;
317 assert value != null;
318 current.category = value.toString();
319 }
320 }
321 } }
323 |
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