Tutorial

Tutorial

Current

Step by Step

Import the usual figue packages.

import figue.*;
import figue.box.*;
import figue.path.*;
import figue.resource.*

Import the event package.

import figue.event.*;

Define an hyperlink history.

_history = new HyperlinkHistoryInterface() {
   public final void clear() {
     _followedLinks.clear();
   }
   public final boolean isVisited(Hyperlink aLink) {
     return _followedLinks.containsKey(
                (String)(aLink.getInfo()));
   }
   public final void setVisited(Hyperlink aLink) {
    _followedLinks.put((String)(aLink.getInfo()),this);
   }
   private Hashtable _followedLinks = new Hashtable();
};

Add a listener to the facade.

_facade.addHyperlinkListener(new HyperlinkListenerInterface() {
   public void linkEntered(HyperlinkEvent anEvent) {
     ...
   }
   public final void linkClicked(HyperlinkEvent anEvent) {
     ...
   }	    
   public final void linkExited(HyperlinkEvent anEvent) {
     ...
   }
});

Check the events and update the history.

public final void linkClicked(HyperlinkEvent anEvent) {
  try {
    final String theString 
      = (String)(anEvent.getHyperlink().getInfo());
    final URL theUrl;
    if ( theString.equals(POSTER) ) {
       theUrl = new URL("http://www.....");
    }
    else {
      ...
    }
    if ( theUrl!= null ) {
       anEvent.getHyperlink().setVisited();
       getAppletContext().showDocument(theUrl);

Create a link with some information chunk.

theLink = new Hyperlink(URL,_history);

Push some atoms in the link.

theLink.addChild(Atom.newAtom("its"));
theLink.addChild(Atom.newAtom('a'));
theLink.addChild(Atom.newAtom("wonderful"));
theLink.addChild(Atom.newAtom("life"));
theParagraph.addChild(theLink);