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1
19
20 package org.netbeans.modules.welcome.content;
21
22 import java.io.IOException  ;
23 import java.text.DateFormat ;
24 import java.text.ParseException ;
25 import java.text.SimpleDateFormat ;
26 import java.util.ArrayList ;
27 import java.util.Collections ;
28 import java.util.Comparator ;
29 import java.util.Date ;
30 import java.util.Locale ;
31 import javax.xml.parsers.ParserConfigurationException ;
32 import org.netbeans.modules.welcome.content.RSSFeed.ErrorCatcher;
33 import org.netbeans.modules.welcome.content.RSSFeed.FeedHandler;
34 import org.netbeans.modules.welcome.content.RSSFeed.FeedItem;
35 import org.openide.xml.XMLUtil;
36 import org.xml.sax.InputSource ;
37 import org.xml.sax.SAXException ;
38 import org.xml.sax.XMLReader ;
39
40
44 public class CombinationRSSFeed extends RSSFeed {
45
46 private String url1;
47 private String url2;
48
49
50 public CombinationRSSFeed( String url1, String url2, boolean showProxyButton ) {
51 super( showProxyButton );
52 this.url1 = url1;
53 this.url2 = url2;
54 }
55
56 protected ArrayList <FeedItem> buildItemList() throws SAXException , ParserConfigurationException , IOException {
57 XMLReader reader = XMLUtil.createXMLReader( false, true );
58 FeedHandler handler = new FeedHandler();
59 reader.setContentHandler( handler );
60 reader.setEntityResolver( org.openide.xml.EntityCatalog.getDefault() );
61 reader.setErrorHandler( new ErrorCatcher() );
62 reader.parse( new InputSource (url1) );
63
64 ArrayList <FeedItem> res = new ArrayList <FeedItem>( 2*NEWS_COUNT );
65 res.addAll( handler.getItemList() );
66
67 handler = new FeedHandler();
68 reader.setContentHandler( handler );
69 reader.parse( new InputSource (url2) );
70
71 res.addAll( handler.getItemList() );
72
73 return sortNodes( res );
74 }
75
76 private ArrayList <FeedItem> sortNodes( ArrayList <FeedItem> res ) {
77 Collections.sort( res, new DateFeedItemComparator() );
78 return res;
79 }
80
81 private static class DateFeedItemComparator implements Comparator <FeedItem> {
82 private static DateFormat dateFormat = new SimpleDateFormat ( "EEE, dd MMM yyyy HH:mm:ss Z", Locale.ENGLISH ); private static DateFormat dateFormatShort = new SimpleDateFormat ( "EEE, dd MMM yyyy", Locale.ENGLISH );
85 public int compare(FeedItem item1, FeedItem item2) {
86 Date date1 = extractDate( item1 );
87 Date date2 = extractDate( item2 );
88
89 if( null == date1 && null == date2 )
90 return 0;
91 else if( null == date1 )
92 return 1;
93 else if( null == date2 )
94 return -1;
95 if( date1.after( date2 ) ) {
96 return -1;
97 } else if( date1.before( date2 ) ) {
98 return 1;
99 }
100 return 0;
101 }
102
103 private Date extractDate( FeedItem item ) {
104 try {
105 if( null != item.dateTime )
106 return dateFormat.parse( item.dateTime );
107 } catch( ParseException pE ) {
108 try {
109 return dateFormatShort.parse( item.dateTime );
110 } catch( ParseException otherPE ) {
111 }
113 }
114 return null;
115 }
116 }
117 }
118 |
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