// License: GPL. See LICENSE file for details.
package org.openstreetmap.josm.gui;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JEditorPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.border.EmptyBorder;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.Version;
import org.openstreetmap.josm.io.CacheCustomContent;
import org.openstreetmap.josm.tools.LanguageInfo;
import org.openstreetmap.josm.tools.OpenBrowser;
import org.openstreetmap.josm.tools.WikiReader;
public class GettingStarted extends JPanel {
private String content = "";
static private String styles = "\n";
public static class LinkGeneral extends JEditorPane implements HyperlinkListener {
public LinkGeneral(String text) {
setContentType("text/html");
setText(text);
setEditable(false);
setOpaque(false);
addHyperlinkListener(this);
}
public void hyperlinkUpdate(HyperlinkEvent e) {
if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
OpenBrowser.displayUrl(e.getDescription());
}
}
}
/**
* Grabs current MOTD from cache or webpage and parses it.
*/
private static class MotdContent extends CacheCustomContent {
public MotdContent() {
super("motd.html", CacheCustomContent.INTERVAL_DAILY);
}
final private int myVersion = Version.getInstance().getVersion();
final private String myLang = LanguageInfo.getWikiLanguagePrefix();
/**
* This function gets executed whenever the cached files need updating
* @see org.openstreetmap.josm.io.CacheCustomContent#updateData()
*/
@Override
protected byte[] updateData() {
String motd = new WikiReader().readLang("StartupPage");
if (motd.length() == 0) {
motd = "" + styles + "" + "JOSM - " + tr("Java OpenStreetMap Editor")
+ "
\n(" + tr("Message of the day not available") + ")
";
}
// Save this to prefs in case JOSM is updated so MOTD can be refreshed
Main.pref.putInteger("cache.motd.html.version", myVersion);
Main.pref.put("cache.motd.html.lang", myLang);
return motd.getBytes();
}
/**
* Additionally check if JOSM has been updated and refresh MOTD
*/
@Override
protected boolean isCacheValid() {
// We assume a default of myVersion because it only kicks in in two cases:
// 1. Not yet written - but so isn't the interval variable, so it gets updated anyway
// 2. Cannot be written (e.g. while developing). Obviously we don't want to update
// everytime because of something we can't read.
return (Main.pref.getInteger("cache.motd.html.version", -999) == myVersion)
&& Main.pref.get("cache.motd.html.lang").equals(myLang);
}
}
/**
* Initializes getting the MOTD as well as enabling the FileDrop Listener. Displays a message
* while the MOTD is downloading.
*/
public GettingStarted() {
super(new BorderLayout());
final LinkGeneral lg = new LinkGeneral("" + styles + "" + "JOSM - " + tr("Java OpenStreetMap Editor")
+ "
" + tr("Downloading \"Message of the day\"") + "
");
JScrollPane scroller = new JScrollPane(lg);
scroller.setViewportBorder(new EmptyBorder(10, 100, 10, 100));
add(scroller, BorderLayout.CENTER);
// Asynchronously get MOTD to speed-up JOSM startup
Thread t = new Thread(new Runnable() {
public void run() {
if (content.length() == 0 && Main.pref.getBoolean("help.displaymotd", true)) {
content = new MotdContent().updateIfRequiredString();
}
EventQueue.invokeLater(new Runnable() {
public void run() {
lg.setText(content);
// lg.moveCaretPosition(0);
}
});
}
}, "MOTD-Loader");
t.setDaemon(true);
t.start();
new FileDrop(scroller);
}
}