| 1 | // License: GPL. See LICENSE file for details. |
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| 2 | |
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| 3 | package org.openstreetmap.josm.gui; |
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| 4 | |
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| 5 | import static org.openstreetmap.josm.tools.I18n.tr; |
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| 6 | |
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| 7 | import java.awt.BorderLayout; |
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| 8 | import java.awt.EventQueue; |
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| 9 | import java.awt.event.InputEvent; |
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| 10 | import java.awt.event.KeyEvent; |
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| 11 | import java.io.IOException; |
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| 12 | import java.io.UnsupportedEncodingException; |
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| 13 | import java.net.URL; |
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| 14 | import java.util.regex.Matcher; |
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| 15 | import java.util.regex.Pattern; |
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| 16 | |
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| 17 | import javax.swing.JComponent; |
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| 18 | import javax.swing.JEditorPane; |
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| 19 | import javax.swing.JPanel; |
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| 20 | import javax.swing.JScrollPane; |
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| 21 | import javax.swing.KeyStroke; |
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| 22 | import javax.swing.border.EmptyBorder; |
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| 23 | import javax.swing.event.HyperlinkEvent; |
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| 24 | import javax.swing.event.HyperlinkListener; |
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| 25 | |
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| 26 | import org.openstreetmap.josm.Main; |
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| 27 | import org.openstreetmap.josm.data.Version; |
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| 28 | import org.openstreetmap.josm.io.CacheCustomContent; |
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| 29 | import org.openstreetmap.josm.tools.LanguageInfo; |
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| 30 | import org.openstreetmap.josm.tools.OpenBrowser; |
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| 31 | import org.openstreetmap.josm.tools.WikiReader; |
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| 32 | |
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| 33 | public class GettingStarted extends JPanel { |
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| 34 | private String content = ""; |
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| 35 | private static final String STYLE = "<style type=\"text/css\">\n" |
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| 36 | + "body {font-family: sans-serif; font-weight: bold; }\n" |
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| 37 | + "h1 {text-align: center; }\n" |
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| 38 | + ".icon {font-size: 0; }\n" |
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| 39 | + "</style>\n"; |
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| 40 | |
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| 41 | public static class LinkGeneral extends JEditorPane implements HyperlinkListener { |
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| 42 | public LinkGeneral(String text) { |
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| 43 | setContentType("text/html"); |
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| 44 | setText(text); |
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| 45 | setEditable(false); |
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| 46 | setOpaque(false); |
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| 47 | addHyperlinkListener(this); |
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| 48 | } |
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| 49 | |
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| 50 | public void hyperlinkUpdate(HyperlinkEvent e) { |
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| 51 | if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) { |
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| 52 | OpenBrowser.displayUrl(e.getDescription()); |
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| 53 | } |
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| 54 | } |
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| 55 | } |
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| 56 | |
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| 57 | /** |
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| 58 | * Grabs current MOTD from cache or webpage and parses it. |
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| 59 | */ |
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| 60 | private static class MotdContent extends CacheCustomContent<IOException> { |
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| 61 | public MotdContent() { |
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| 62 | super("motd.html", CacheCustomContent.INTERVAL_DAILY); |
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| 63 | } |
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| 64 | |
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| 65 | final private int myVersion = Version.getInstance().getVersion(); |
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| 66 | final private String myLang = LanguageInfo.getWikiLanguagePrefix(); |
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| 67 | |
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| 68 | /** |
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| 69 | * This function gets executed whenever the cached files need updating |
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| 70 | * @see org.openstreetmap.josm.io.CacheCustomContent#updateData() |
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| 71 | */ |
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| 72 | @Override |
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| 73 | protected byte[] updateData() throws IOException { |
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| 74 | String motd = new WikiReader().readLang("StartupPage"); |
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| 75 | // Save this to prefs in case JOSM is updated so MOTD can be refreshed |
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| 76 | Main.pref.putInteger("cache.motd.html.version", myVersion); |
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| 77 | Main.pref.put("cache.motd.html.lang", myLang); |
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| 78 | try { |
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| 79 | return motd.getBytes("utf-8"); |
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| 80 | } catch(UnsupportedEncodingException e){ |
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| 81 | e.printStackTrace(); |
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| 82 | return new byte[0]; |
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| 83 | } |
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| 84 | } |
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| 85 | |
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| 86 | /** |
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| 87 | * Additionally check if JOSM has been updated and refresh MOTD |
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| 88 | */ |
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| 89 | @Override |
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| 90 | protected boolean isCacheValid() { |
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| 91 | // We assume a default of myVersion because it only kicks in in two cases: |
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| 92 | // 1. Not yet written - but so isn't the interval variable, so it gets updated anyway |
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| 93 | // 2. Cannot be written (e.g. while developing). Obviously we don't want to update |
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| 94 | // everytime because of something we can't read. |
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| 95 | return (Main.pref.getInteger("cache.motd.html.version", -999) == myVersion) |
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| 96 | && Main.pref.get("cache.motd.html.lang").equals(myLang); |
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| 97 | } |
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| 98 | } |
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| 99 | |
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| 100 | /** |
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| 101 | * Initializes getting the MOTD as well as enabling the FileDrop Listener. Displays a message |
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| 102 | * while the MOTD is downloading. |
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| 103 | */ |
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| 104 | public GettingStarted() { |
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| 105 | super(new BorderLayout()); |
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| 106 | final LinkGeneral lg = new LinkGeneral("<html>" + STYLE + "<h1>" + "JOSM - " + tr("Java OpenStreetMap Editor") |
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| 107 | + "</h1><h2 align=\"center\">" + tr("Downloading \"Message of the day\"") + "</h2></html>"); |
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| 108 | // clear the build-in command ctrl+shift+O, because it is used as shortcut in JOSM |
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| 109 | lg.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_O, InputEvent.SHIFT_MASK | InputEvent.CTRL_MASK), "none"); |
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| 110 | |
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| 111 | JScrollPane scroller = new JScrollPane(lg); |
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| 112 | scroller.setViewportBorder(new EmptyBorder(10, 100, 10, 100)); |
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| 113 | add(scroller, BorderLayout.CENTER); |
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| 114 | |
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| 115 | // Asynchronously get MOTD to speed-up JOSM startup |
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| 116 | Thread t = new Thread(new Runnable() { |
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| 117 | @Override |
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| 118 | public void run() { |
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| 119 | if (content.isEmpty() && Main.pref.getBoolean("help.displaymotd", true)) { |
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| 120 | try { |
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| 121 | content = new MotdContent().updateIfRequiredString(); |
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| 122 | } catch (IOException ex) { |
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| 123 | System.out.println(tr("Warning: failed to read MOTD. Exception was: {0}", ex.toString())); |
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| 124 | content = "<html>" + STYLE + "<h1>" + "JOSM - " + tr("Java OpenStreetMap Editor") |
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| 125 | + "</h1>\n<h2 align=\"center\">(" + tr("Message of the day not available") + ")</h2></html>"; |
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| 126 | } |
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| 127 | } |
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| 128 | |
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| 129 | EventQueue.invokeLater(new Runnable() { |
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| 130 | @Override |
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| 131 | public void run() { |
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| 132 | lg.setText(fixImageLinks(content)); |
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| 133 | // lg.moveCaretPosition(0); |
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| 134 | } |
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| 135 | }); |
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| 136 | } |
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| 137 | }, "MOTD-Loader"); |
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| 138 | t.setDaemon(true); |
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| 139 | t.start(); |
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| 140 | |
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| 141 | new FileDrop(scroller); |
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| 142 | } |
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| 143 | |
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| 144 | private String fixImageLinks(String s) { |
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| 145 | Matcher m = Pattern.compile("src=\"http://josm.openstreetmap.de/browser/trunk(/images/.*?\\.png)\\?format=raw\"").matcher(s); |
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| 146 | StringBuffer sb = new StringBuffer(); |
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| 147 | while (m.find()) { |
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| 148 | String im = m.group(1); |
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| 149 | URL u = getClass().getResource(im); |
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| 150 | if (u != null) { |
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| 151 | m.appendReplacement(sb, Matcher.quoteReplacement("src=\"" + u.toString() + "\"")); |
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| 152 | } |
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| 153 | } |
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| 154 | m.appendTail(sb); |
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| 155 | return sb.toString(); |
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| 156 | } |
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| 157 | } |
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