git.gag.com Git - debian/openrocket/blob - core/src/net/sf/openrocket/gui/components/URLLabel.java

   1 package net.sf.openrocket.gui.components;
   2
   3 import java.awt.Color;
   4 import java.awt.Cursor;
   5 import java.awt.Desktop;
   6 import java.awt.event.MouseAdapter;
   7 import java.awt.event.MouseEvent;
   8 import java.awt.font.TextAttribute;
   9 import java.io.IOException;
  10 import java.net.URI;
  11 import java.net.URISyntaxException;
  12 import java.util.HashMap;
  13 import java.util.Map;
  14
  15 import net.sf.openrocket.logging.LogHelper;
  16 import net.sf.openrocket.startup.Application;
  17 import net.sf.openrocket.util.BugException;
  18
  19 /**
  20  * A label of a URL that is clickable.  Clicking the URL will launch the URL in
  21  * the default browser if the Desktop class is supported.
  22  *
  23  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  24  */
  25 public class URLLabel extends SelectableLabel {
  26         private static final LogHelper log = Application.getLogger();
  27
  28         /**
  29          * Create a label showing the url it will direct to.
  30          *
  31          * @param url   the URL.
  32          */
  33         public URLLabel(String url) {
  34                 this(url, url);
  35         }
  36
  37         /**
  38          * Create a label with separate URL and label.
  39          *
  40          * @param url   the URL clicking will open.
  41          * @param label the label.
  42          */
  43         public URLLabel(final String url, String label) {
  44                 super();
  45
  46                 setText(label);
  47
  48                 if (Desktop.isDesktopSupported()) {
  49
  50                         // Blue, underlined font
  51                         Map<TextAttribute, Object> map = new HashMap<TextAttribute, Object>();
  52                         map.put(TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_ON);
  53                         this.setFont(this.getFont().deriveFont(map));
  54                         this.setForeground(Color.BLUE);
  55
  56                         this.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
  57
  58
  59                         this.addMouseListener(new MouseAdapter() {
  60                                 @Override
  61                                 public void mouseClicked(MouseEvent e) {
  62                                         Desktop d = Desktop.getDesktop();
  63                                         try {
  64                                                 d.browse(new URI(url));
  65                                         } catch (URISyntaxException e1) {
  66                                                 throw new BugException("Illegal URL: " + url, e1);
  67                                         } catch (IOException e1) {
  68                                                 log.error("Unable to launch browser: " + e1.getMessage(), e1);
  69                                         }
  70                                 }
  71                         });
  72
  73                 }
  74         }
  75 }