URLOpener.java

package ij.plugin;
import java.awt.*;
import java.io.*;
import ij.*;
import ij.io.*;
import ij.gui.*;

public class URLOpener implements PlugIn {

    private static String url = "http://rsb.info.nih.gov/ij/images/clown.gif";

    public void run(String urlOrName) {
        if (!urlOrName.equals("")) {
            String url = urlOrName.indexOf("://")>0?urlOrName:Prefs.getImagesURL()+urlOrName;
            ImagePlus imp = new ImagePlus(url);
            if (imp.getType()==ImagePlus.COLOR_RGB)
                Opener.convertGrayJpegTo8Bits(imp);
            imp.show();
            return;
        }
        
        GenericDialog gd = new GenericDialog("Enter a URL");
        gd.addMessage("Enter the URL of a TIFF, JPEG or GIF image:");
        gd.addStringField("", url, 40);
        gd.showDialog();
        if (gd.wasCanceled())
            return;
        url = gd.getNextString();
        url = url.trim();
        if (url.indexOf("://")==-1)
            url = "http://" + url;
        if (url.endsWith("/"))
            IJ.runPlugIn("ij.plugin.BrowserLauncher", url.substring(0, url.length()-1));
        else {
            IJ.showStatus("Opening: " + url);
            ImagePlus imp = new ImagePlus(url);
            imp.show();
            IJ.showStatus("");
        }
        IJ.register(URLOpener.class);  // keeps this class from being GC'd
    }
}