AppletViewerPanel.java

/*
 * This file is modified by Ivan Maidanski <ivmai@ivmaisoft.com>
 * Project name: JCGO-SUNAWT (http://www.ivmaisoft.com/jcgo/)
 */

/*
 * @(#)AppletViewerPanel.java   1.30 03/01/23
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package sun.applet;

import java.util.*;
import java.io.*;
import java.net.URL;
import java.net.MalformedURLException;
import java.awt.*;
import java.applet.*;
import sun.tools.jar.*;


/**
 * Sample applet panel class. The panel manages and manipulates the
 * applet as it is being loaded. It forks a seperate thread in a new
 * thread group to call the applet's init(), start(), stop(), and
 * destroy() methods.
 *
 * @version     1.30, 01/23/03
 * @author      Arthur van Hoff
 */
class AppletViewerPanel extends AppletPanel {

    /* Are we debugging? */
    static boolean debug = false;

    /**
     * The document url.
     */
    URL documentURL;

    /**
     * The base url.
     */
    URL baseURL;

    /**
     * The attributes of the applet.
     */
    Hashtable atts;

    /*
     * JDK 1.1 serialVersionUID
     */
    private static final long serialVersionUID = 8890989370785545619L;

    /**
     * Construct an applet viewer and start the applet.
     */
    AppletViewerPanel(URL documentURL, Hashtable atts) {
        this.documentURL = documentURL;
        this.atts = atts;

        String att = getParameter("codebase");
        if (att != null) {
            if (!att.endsWith("/")) {
                att += "/";
            }
            try {
                baseURL = new URL(documentURL, att);
            } catch (MalformedURLException e) {
            }
        }
        if (baseURL == null) {
            String file = documentURL.getFile();
            int i = file.lastIndexOf('/');
            if (i >= 0 && i < file.length() - 1) {
                try {
                    baseURL = new URL(documentURL, file.substring(0, i + 1));
                } catch (MalformedURLException e) {
                }
            }
        }

        // when all is said & done, baseURL shouldn't be null
        if (baseURL == null)
                baseURL = documentURL;


    }

    public void updateHostIPFile(String name) {
    }

    public boolean hasInitialFocus() {
        String name = getParameter("initial_focus");
        return name == null || (!name.toLowerCase().equals("false") &&
                !name.toLowerCase().equals("off") && !name.equals("0"));
    }

    /**
     * Get an applet parameter.
     */
    public String getParameter(String name) {
        return (String)atts.get(name.toLowerCase());
    }

    /**
     * Get the document url.
     */
    public URL getDocumentBase() {
        return documentURL;

    }

    /**
     * Get the base url.
     */
    public URL getCodeBase() {
        return baseURL;
    }

    /**
     * Get the width.
     */
    public int getWidth() {
        String w = getParameter("width");
        if (w != null) {
            return Integer.valueOf(w).intValue();
        }
        return 0;
    }


    /**
     * Get the height.
     */
    public int getHeight() {
        String h = getParameter("height");
        if (h != null) {
            return Integer.valueOf(h).intValue();
        }
        return 0;
    }

    /**
     * Get the code parameter
     */
    public String getCode() {
        return getParameter("code");
    }


    /**
     * Return the list of jar files if specified.
     * Otherwise return null.
     */
    public String getJarFiles() {
        return getParameter("archive");
    }

    /**
     * Return the value of the object param
     */
    public String getSerializedObject() {
        return getParameter("object");// another name?
    }


    /**
     * Get the applet context. For now this is
     * also implemented by the AppletPanel class.
     */
    public AppletContext getAppletContext() {
        return (AppletContext)getParent();
    }

    static void debug(String s) {
        if(debug)
            System.err.println("AppletViewerPanel:::" + s);
    }

    static void debug(String s, Throwable t) {
        if(debug) {
            t.printStackTrace();
            debug(s);
        }
    }
}