package com.touchgraph.wikibrowser;

import java.awt.Color;
import java.security.AccessControlException;

import javax.swing.*;

public class TGWikiBrowserApplet extends JApplet {

    TGWikiPanel wikiPanel;

    public void init() {	
	
	this.getContentPane().add("Center", new JLabel("Loading ..."));

	/* read the <applet> tag's parameters */
	TGWikiBrowser.WIKI_FILE      = getParameter("DATA_URL");
	TGWikiBrowser.WIKI_URL       = getParameter("WIKI_URL");
	TGWikiBrowser.INITIAL_NODE   = getParameter("INITIAL_NODE");
	TGWikiBrowser.INITIAL_RADIUS = 
	    Integer.parseInt(getParameter("LOCALITY_RADIUS"));
	TGWikiBrowser.INITIAL_SHOW_BACKLINKS = 
	    new Boolean(getParameter("SHOW_BACKLINKS")).booleanValue();
        
	// TODO: Some eyecandy while this loads ...
	try {

	    wikiPanel = new TGWikiPanel(getAppletContext());
	    wikiPanel.setBorder(BorderFactory.createLineBorder(Color.black));
	    this.getContentPane().add("Center", wikiPanel);

	} catch (AccessControlException ace) {
	    //custom title, error icon
	    this.getContentPane().add(new JLabel
				      (ace.getMessage() 
				       + "\nThis applet can load Wiki topologies only from the originating host"));
	}


    /*
      This was copied from TGWikiBrowser.buildPanel()'s FindAction:

     */
    public void setTopic(String topic) {

	if ( ! topic.trim().equals("")) {

	    getAppletContext().showStatus("Looking for " + topic + " ...");

	    WikiNode foundNode = (WikiNode) wikiPanel.getTGPanel().findNodeLabelContaining(topic);
	    if (foundNode!=null) {
		wikiPanel.setLocale(foundNode);
		wikiPanel.tgPanel.setSelect(foundNode);
		wikiPanel.setWikiTextPane(foundNode);
	    } else {
		JOptionPane.showMessageDialog(this, "Topic " + topic + " was not found.");
	    }

	    getAppletContext().showStatus("");
	}
    }
}