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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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package sun.security.tools.policytool;

import java.io.*;
import java.util.LinkedList;
import java.util.ListIterator;
import java.util.Vector;
import java.util.Enumeration;
import java.net.URL;
import java.net.MalformedURLException;
import java.lang.reflect.*;
import java.text.Collator;
import java.text.MessageFormat;
import sun.security.util.PropertyExpander;
import sun.security.util.PropertyExpander.ExpandException;
import java.awt.*;
import java.awt.event.*;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.*;
import sun.security.provider.*;
import sun.security.util.PolicyUtil;
import javax.security.auth.x500.X500Principal;

PolicyTool may be used by users and administrators to configure the
overall java security policy (currently stored in the policy file).
Using PolicyTool administrators may add and remove policies from
the policy file. 

See Also:
Policy
Since:
  1.2/**
 * PolicyTool may be used by users and administrators to configure the
 * overall java security policy (currently stored in the policy file).
 * Using PolicyTool administrators may add and remove policies from
 * the policy file. <p>
 *
 * @see java.security.Policy
 * @since   1.2
 */

public class PolicyTool {

    // for i18n
    static final java.util.ResourceBundle rb =
        java.util.ResourceBundle.getBundle(
            "sun.security.tools.policytool.Resources");
    static final Collator collator = Collator.getInstance();
    static {
        // this is for case insensitive string comparisons
        collator.setStrength(Collator.PRIMARY);
    };

    // anyone can add warnings
    Vector<String> warnings;
    boolean newWarning = false;

    // set to true if policy modified.
    // this way upon exit we know if to ask the user to save changes
    boolean modified = false;

    private static final boolean testing = false;
    private static final Class[] TWOPARAMS = { String.class, String.class };
    private static final Class[] ONEPARAMS = { String.class };
    private static final Class[] NOPARAMS  = {};
    /*
     * All of the policy entries are read in from the
     * policy file and stored here.  Updates to the policy entries
     * using addEntry() and removeEntry() are made here.  To ultimately save
     * the policy entries back to the policy file, the SavePolicy button
     * must be clicked.
     **/
    private static String policyFileName = null;
    private Vector<PolicyEntry> policyEntries = null;
    private PolicyParser parser = null;

    /* The public key alias information is stored here.  */
    private KeyStore keyStore = null;
    private String keyStoreName = " ";
    private String keyStoreType = " ";
    private String keyStoreProvider = " ";
    private String keyStorePwdURL = " ";

    /* standard PKCS11 KeyStore type */
    private static final String P11KEYSTORE = "PKCS11";

    /* reserved word for PKCS11 KeyStores */
    private static final String NONE = "NONE";

    
default constructor
/**
     * default constructor
     */
    private PolicyTool() {
        policyEntries = new Vector<PolicyEntry>();
        parser = new PolicyParser();
        warnings = new Vector<String>();
    }

    
get the PolicyFileName
/**
     * get the PolicyFileName
     */
    String getPolicyFileName() {
        return policyFileName;
    }

    
set the PolicyFileName
/**
     * set the PolicyFileName
     */
    void setPolicyFileName(String policyFileName) {
        PolicyTool.policyFileName = policyFileName;
    }

   
clear keyStore info
/**
    * clear keyStore info
    */
    void clearKeyStoreInfo() {
        this.keyStoreName = null;
        this.keyStoreType = null;
        this.keyStoreProvider = null;
        this.keyStorePwdURL = null;

        this.keyStore = null;
    }

    
get the keyStore URL name
/**
     * get the keyStore URL name
     */
    String getKeyStoreName() {
        return keyStoreName;
    }

    
get the keyStore Type
/**
     * get the keyStore Type
     */
    String getKeyStoreType() {
        return keyStoreType;
    }

    
get the keyStore Provider
/**
     * get the keyStore Provider
     */
    String getKeyStoreProvider() {
        return keyStoreProvider;
    }

    
get the keyStore password URL
/**
     * get the keyStore password URL
     */
    String getKeyStorePwdURL() {
        return keyStorePwdURL;
    }

    
Open and read a policy file
/**
     * Open and read a policy file
     */
    void openPolicy(String filename) throws FileNotFoundException,
                                        PolicyParser.ParsingException,
                                        KeyStoreException,
                                        CertificateException,
                                        InstantiationException,
                                        MalformedURLException,
                                        IOException,
                                        NoSuchAlgorithmException,
                                        IllegalAccessException,
                                        NoSuchMethodException,
                                        UnrecoverableKeyException,
                                        NoSuchProviderException,
                                        ClassNotFoundException,
                                        PropertyExpander.ExpandException,
                                        InvocationTargetException {

        newWarning = false;

        // start fresh - blow away the current state
        policyEntries = new Vector<PolicyEntry>();
        parser = new PolicyParser();
        warnings = new Vector<String>();
        setPolicyFileName(null);
        clearKeyStoreInfo();

        // see if user is opening a NEW policy file
        if (filename == null) {
            modified = false;
            return;
        }

        // Read in the policy entries from the file and
        // populate the parser vector table.  The parser vector
        // table only holds the entries as strings, so it only
        // guarantees that the policies are syntactically
        // correct.
        setPolicyFileName(filename);
        parser.read(new FileReader(filename));

        // open the keystore
        openKeyStore(parser.getKeyStoreUrl(), parser.getKeyStoreType(),
                parser.getKeyStoreProvider(), parser.getStorePassURL());

        // Update the local vector with the same policy entries.
        // This guarantees that the policy entries are not only
        // syntactically correct, but semantically valid as well.
        Enumeration<PolicyParser.GrantEntry> enum_ = parser.grantElements();
        while (enum_.hasMoreElements()) {
            PolicyParser.GrantEntry ge = enum_.nextElement();

            // see if all the signers have public keys
            if (ge.signedBy != null) {

                String signers[] = parseSigners(ge.signedBy);
                for (int i = 0; i < signers.length; i++) {
                    PublicKey pubKey = getPublicKeyAlias(signers[i]);
                    if (pubKey == null) {
                        newWarning = true;
                        MessageFormat form = new MessageFormat(rb.getString
                            ("Warning.A.public.key.for.alias.signers.i.does.not.exist.Make.sure.a.KeyStore.is.properly.configured."));
                        Object[] source = {signers[i]};
                        warnings.addElement(form.format(source));
                    }
                }
            }

            // check to see if the Principals are valid
            ListIterator<PolicyParser.PrincipalEntry> prinList =
                                                ge.principals.listIterator(0);
            while (prinList.hasNext()) {
                PolicyParser.PrincipalEntry pe = prinList.next();
                try {
                    verifyPrincipal(pe.getPrincipalClass(),
                                pe.getPrincipalName());
                } catch (ClassNotFoundException fnfe) {
                    newWarning = true;
                    MessageFormat form = new MessageFormat(rb.getString
                                ("Warning.Class.not.found.class"));
                    Object[] source = {pe.getPrincipalClass()};
                    warnings.addElement(form.format(source));
                }
            }

            // check to see if the Permissions are valid
            Enumeration<PolicyParser.PermissionEntry> perms =
                                                ge.permissionElements();
            while (perms.hasMoreElements()) {
                PolicyParser.PermissionEntry pe = perms.nextElement();
                try {
                    verifyPermission(pe.permission, pe.name, pe.action);
                } catch (ClassNotFoundException fnfe) {
                    newWarning = true;
                    MessageFormat form = new MessageFormat(rb.getString
                                ("Warning.Class.not.found.class"));
                    Object[] source = {pe.permission};
                    warnings.addElement(form.format(source));
                } catch (InvocationTargetException ite) {
                    newWarning = true;
                    MessageFormat form = new MessageFormat(rb.getString
                        ("Warning.Invalid.argument.s.for.constructor.arg"));
                    Object[] source = {pe.permission};
                    warnings.addElement(form.format(source));
                }

                // see if all the permission signers have public keys
                if (pe.signedBy != null) {

                    String signers[] = parseSigners(pe.signedBy);

                    for (int i = 0; i < signers.length; i++) {
                        PublicKey pubKey = getPublicKeyAlias(signers[i]);
                        if (pubKey == null) {
                            newWarning = true;
                            MessageFormat form = new MessageFormat(rb.getString
                                ("Warning.A.public.key.for.alias.signers.i.does.not.exist.Make.sure.a.KeyStore.is.properly.configured."));
                            Object[] source = {signers[i]};
                            warnings.addElement(form.format(source));
                        }
                    }
                }
            }
            PolicyEntry pEntry = new PolicyEntry(this, ge);
            policyEntries.addElement(pEntry);
        }

        // just read in the policy -- nothing has been modified yet
        modified = false;
    }


    
Save a policy to a file
/**
     * Save a policy to a file
     */
    void savePolicy(String filename)
    throws FileNotFoundException, IOException {
        // save the policy entries to a file
        parser.setKeyStoreUrl(keyStoreName);
        parser.setKeyStoreType(keyStoreType);
        parser.setKeyStoreProvider(keyStoreProvider);
        parser.setStorePassURL(keyStorePwdURL);
        parser.write(new FileWriter(filename));
        modified = false;
    }

    
Open the KeyStore
/**
     * Open the KeyStore
     */
    void openKeyStore(String name,
                String type,
                String provider,
                String pwdURL) throws   KeyStoreException,
                                        NoSuchAlgorithmException,
                                        UnrecoverableKeyException,
                                        IOException,
                                        CertificateException,
                                        NoSuchProviderException,
                                        ExpandException {

        if (name == null && type == null &&
            provider == null && pwdURL == null) {

            // policy did not specify a keystore during open
            // or use wants to reset keystore values

            this.keyStoreName = null;
            this.keyStoreType = null;
            this.keyStoreProvider = null;
            this.keyStorePwdURL = null;

            // caller will set (tool.modified = true) if appropriate

            return;
        }

        URL policyURL = null;
        if (policyFileName != null) {
            File pfile = new File(policyFileName);
            policyURL = new URL("file:" + pfile.getCanonicalPath());
        }

        // although PolicyUtil.getKeyStore may properly handle
        // defaults and property expansion, we do it here so that
        // if the call is successful, we can set the proper values
        // (PolicyUtil.getKeyStore does not return expanded values)

        if (name != null && name.length() > 0) {
            name = PropertyExpander.expand(name).replace
                                        (File.separatorChar, '/');
        }
        if (type == null || type.length() == 0) {
            type = KeyStore.getDefaultType();
        }
        if (pwdURL != null && pwdURL.length() > 0) {
            pwdURL = PropertyExpander.expand(pwdURL).replace
                                        (File.separatorChar, '/');
        }

        try {
            this.keyStore = PolicyUtil.getKeyStore(policyURL,
                                                name,
                                                type,
                                                provider,
                                                pwdURL,
                                                null);
        } catch (IOException ioe) {

            // copied from sun.security.pkcs11.SunPKCS11
            String MSG = "no password provided, and no callback handler " +
                        "available for retrieving password";

            Throwable cause = ioe.getCause();
            if (cause != null &&
                cause instanceof javax.security.auth.login.LoginException &&
                MSG.equals(cause.getMessage())) {

                // throw a more friendly exception message
                throw new IOException(MSG);
            } else {
                throw ioe;
            }
        }

        this.keyStoreName = name;
        this.keyStoreType = type;
        this.keyStoreProvider = provider;
        this.keyStorePwdURL = pwdURL;

        // caller will set (tool.modified = true)
    }

    
Add a Grant entry to the overall policy at the specified index.
A policy entry consists of a CodeSource.
/**
     * Add a Grant entry to the overall policy at the specified index.
     * A policy entry consists of a CodeSource.
     */
    boolean addEntry(PolicyEntry pe, int index) {

        if (index < 0) {
            // new entry -- just add it to the end
            policyEntries.addElement(pe);
            parser.add(pe.getGrantEntry());
        } else {
            // existing entry -- replace old one
            PolicyEntry origPe = policyEntries.elementAt(index);
            parser.replace(origPe.getGrantEntry(), pe.getGrantEntry());
            policyEntries.setElementAt(pe, index);
        }
        return true;
    }

    
Add a Principal entry to an existing PolicyEntry at the specified index.
A Principal entry consists of a class, and name.
If the principal already exists, it is not added again.
/**
     * Add a Principal entry to an existing PolicyEntry at the specified index.
     * A Principal entry consists of a class, and name.
     *
     * If the principal already exists, it is not added again.
     */
    boolean addPrinEntry(PolicyEntry pe,
                        PolicyParser.PrincipalEntry newPrin,
                        int index) {

        // first add the principal to the Policy Parser entry
        PolicyParser.GrantEntry grantEntry = pe.getGrantEntry();
        if (grantEntry.contains(newPrin) == true)
            return false;

        LinkedList<PolicyParser.PrincipalEntry> prinList =
                                                grantEntry.principals;
        if (index != -1)
            prinList.set(index, newPrin);
        else
            prinList.add(newPrin);

        modified = true;
        return true;
    }

    
Add a Permission entry to an existing PolicyEntry at the specified index.
A Permission entry consists of a permission, name, and actions.
If the permission already exists, it is not added again.
/**
     * Add a Permission entry to an existing PolicyEntry at the specified index.
     * A Permission entry consists of a permission, name, and actions.
     *
     * If the permission already exists, it is not added again.
     */
    boolean addPermEntry(PolicyEntry pe,
                        PolicyParser.PermissionEntry newPerm,
                        int index) {

        // first add the permission to the Policy Parser Vector
        PolicyParser.GrantEntry grantEntry = pe.getGrantEntry();
        if (grantEntry.contains(newPerm) == true)
            return false;

        Vector<PolicyParser.PermissionEntry> permList =
                                                grantEntry.permissionEntries;
        if (index != -1)
            permList.setElementAt(newPerm, index);
        else
            permList.addElement(newPerm);

        modified = true;
        return true;
    }

    
Remove a Permission entry from an existing PolicyEntry.
/**
     * Remove a Permission entry from an existing PolicyEntry.
     */
    boolean removePermEntry(PolicyEntry pe,
                        PolicyParser.PermissionEntry perm) {

        // remove the Permission from the GrantEntry
        PolicyParser.GrantEntry ppge = pe.getGrantEntry();
        modified = ppge.remove(perm);
        return modified;
    }

    
remove an entry from the overall policy
/**
     * remove an entry from the overall policy
     */
    boolean removeEntry(PolicyEntry pe) {

        parser.remove(pe.getGrantEntry());
        modified = true;
        return (policyEntries.removeElement(pe));
    }

    
retrieve all Policy Entries
/**
     * retrieve all Policy Entries
     */
    PolicyEntry[] getEntry() {

        if (policyEntries.size() > 0) {
            PolicyEntry entries[] = new PolicyEntry[policyEntries.size()];
            for (int i = 0; i < policyEntries.size(); i++)
                entries[i] = policyEntries.elementAt(i);
            return entries;
        }
        return null;
    }

    
Retrieve the public key mapped to a particular name.
If the key has expired, a KeyException is thrown.
/**
     * Retrieve the public key mapped to a particular name.
     * If the key has expired, a KeyException is thrown.
     */
    PublicKey getPublicKeyAlias(String name) throws KeyStoreException {
        if (keyStore == null) {
            return null;
        }

        Certificate cert = keyStore.getCertificate(name);
        if (cert == null) {
            return null;
        }
        PublicKey pubKey = cert.getPublicKey();
        return pubKey;
    }

    
Retrieve all the alias names stored in the certificate database
/**
     * Retrieve all the alias names stored in the certificate database
     */
    String[] getPublicKeyAlias() throws KeyStoreException {

        int numAliases = 0;
        String aliases[] = null;

        if (keyStore == null) {
            return null;
        }
        Enumeration<String> enum_ = keyStore.aliases();

        // first count the number of elements
        while (enum_.hasMoreElements()) {
            enum_.nextElement();
            numAliases++;
        }

        if (numAliases > 0) {
            // now copy them into an array
            aliases = new String[numAliases];
            numAliases = 0;
            enum_ = keyStore.aliases();
            while (enum_.hasMoreElements()) {
                aliases[numAliases] = new String(enum_.nextElement());
                numAliases++;
            }
        }
        return aliases;
    }

    
This method parses a single string of signers separated by commas
("jordan, duke, pippen") into an array of individual strings.
/**
     * This method parses a single string of signers separated by commas
     * ("jordan, duke, pippen") into an array of individual strings.
     */
    String[] parseSigners(String signedBy) {

        String signers[] = null;
        int numSigners = 1;
        int signedByIndex = 0;
        int commaIndex = 0;
        int signerNum = 0;

        // first pass thru "signedBy" counts the number of signers
        while (commaIndex >= 0) {
            commaIndex = signedBy.indexOf(',', signedByIndex);
            if (commaIndex >= 0) {
                numSigners++;
                signedByIndex = commaIndex + 1;
            }
        }
        signers = new String[numSigners];

        // second pass thru "signedBy" transfers signers to array
        commaIndex = 0;
        signedByIndex = 0;
        while (commaIndex >= 0) {
            if ((commaIndex = signedBy.indexOf(',', signedByIndex)) >= 0) {
                // transfer signer and ignore trailing part of the string
                signers[signerNum] =
                        signedBy.substring(signedByIndex, commaIndex).trim();
                signerNum++;
                signedByIndex = commaIndex + 1;
            } else {
                // we are at the end of the string -- transfer signer
                signers[signerNum] = signedBy.substring(signedByIndex).trim();
            }
        }
        return signers;
    }

    
Check to see if the Principal contents are OK
/**
     * Check to see if the Principal contents are OK
     */
    void verifyPrincipal(String type, String name)
        throws ClassNotFoundException,
               InstantiationException
    {
        if (type.equals(PolicyParser.PrincipalEntry.WILDCARD_CLASS) ||
            type.equals(PolicyParser.REPLACE_NAME)) {
            return;
        }
        Class<?> PRIN = Class.forName("java.security.Principal");
        Class<?> pc = Class.forName(type, true,
                Thread.currentThread().getContextClassLoader());
        if (!PRIN.isAssignableFrom(pc)) {
            MessageFormat form = new MessageFormat(rb.getString
                        ("Illegal.Principal.Type.type"));
            Object[] source = {type};
            throw new InstantiationException(form.format(source));
        }

        if (ToolDialog.X500_PRIN_CLASS.equals(pc.getName())) {
            // PolicyParser checks validity of X500Principal name
            // - PolicyTool needs to as well so that it doesn't store
            //   an invalid name that can't be read in later
            //
            // this can throw an IllegalArgumentException
            X500Principal newP = new X500Principal(name);
        }
    }

    
Check to see if the Permission contents are OK
/**
     * Check to see if the Permission contents are OK
     */
    @SuppressWarnings("fallthrough")
    void verifyPermission(String type,
                                    String name,
                                    String actions)
        throws ClassNotFoundException,
               InstantiationException,
               IllegalAccessException,
               NoSuchMethodException,
               InvocationTargetException
    {

        //XXX we might want to keep a hash of created factories...
        Class<?> pc = Class.forName(type, true,
                Thread.currentThread().getContextClassLoader());
        Constructor<?> c = null;
        Vector<String> objects = new Vector<>(2);
        if (name != null) objects.add(name);
        if (actions != null) objects.add(actions);
        switch (objects.size()) {
        case 0:
            try {
                c = pc.getConstructor(NOPARAMS);
                break;
            } catch (NoSuchMethodException ex) {
                // proceed to the one-param constructor
                objects.add(null);
            }
            /* fall through */
        case 1:
            try {
                c = pc.getConstructor(ONEPARAMS);
                break;
            } catch (NoSuchMethodException ex) {
                // proceed to the two-param constructor
                objects.add(null);
            }
            /* fall through */
        case 2:
            c = pc.getConstructor(TWOPARAMS);
            break;
        }
        Object parameters[] = objects.toArray();
        Permission p = (Permission)c.newInstance(parameters);
    }

    /*
     * Parse command line arguments.
     */
    static void parseArgs(String args[]) {
        /* parse flags */
        int n = 0;

        for (n=0; (n < args.length) && args[n].startsWith("-"); n++) {

            String flags = args[n];

            if (collator.compare(flags, "-file") == 0) {
                if (++n == args.length) usage();
                policyFileName = args[n];
            } else {
                MessageFormat form = new MessageFormat(rb.getString
                                ("Illegal.option.option"));
                Object[] source = { flags };
                System.err.println(form.format(source));
                usage();
            }
        }
    }

    static void usage() {
        System.out.println(rb.getString("Usage.policytool.options."));
        System.out.println();
        System.out.println(rb.getString
                (".file.file.policy.file.location"));
        System.out.println();

        System.exit(1);
    }

    
run the PolicyTool
/**
     * run the PolicyTool
     */
    public static void main(String args[]) {
        parseArgs(args);
        ToolWindow tw = new ToolWindow(new PolicyTool());
        tw.displayToolWindow(args);
    }

    // split instr to words according to capitalization,
    // like, AWTControl -> A W T Control
    // this method is for easy pronounciation
    static String splitToWords(String instr) {
        return instr.replaceAll("([A-Z])", " $1");
    }

}

Each entry in the policy configuration file is represented by a
PolicyEntry object.
A PolicyEntry is a (CodeSource,Permission) pair.  The
CodeSource contains the (URL, PublicKey) that together identify
where the Java bytecodes come from and who (if anyone) signed
them.  The URL could refer to localhost.  The URL could also be
null, meaning that this policy entry is given to all comers, as
long as they match the signer field.  The signer could be null,
meaning the code is not signed.
The Permission contains the (Type, Name, Action) triplet.
/**
 * Each entry in the policy configuration file is represented by a
 * PolicyEntry object.
 *
 * A PolicyEntry is a (CodeSource,Permission) pair.  The
 * CodeSource contains the (URL, PublicKey) that together identify
 * where the Java bytecodes come from and who (if anyone) signed
 * them.  The URL could refer to localhost.  The URL could also be
 * null, meaning that this policy entry is given to all comers, as
 * long as they match the signer field.  The signer could be null,
 * meaning the code is not signed.
 *
 * The Permission contains the (Type, Name, Action) triplet.
 *
 */
class PolicyEntry {

    private CodeSource codesource;
    private PolicyTool tool;
    private PolicyParser.GrantEntry grantEntry;
    private boolean testing = false;

    
Create a PolicyEntry object from the information read in
from a policy file.
/**
     * Create a PolicyEntry object from the information read in
     * from a policy file.
     */
    PolicyEntry(PolicyTool tool, PolicyParser.GrantEntry ge)
    throws MalformedURLException, NoSuchMethodException,
    ClassNotFoundException, InstantiationException, IllegalAccessException,
    InvocationTargetException, CertificateException,
    IOException, NoSuchAlgorithmException, UnrecoverableKeyException {

        this.tool = tool;

        URL location = null;

        // construct the CodeSource
        if (ge.codeBase != null)
            location = new URL(ge.codeBase);
        this.codesource = new CodeSource(location,
            (java.security.cert.Certificate[]) null);

        if (testing) {
            System.out.println("Adding Policy Entry:");
            System.out.println("    CodeBase = " + location);
            System.out.println("    Signers = " + ge.signedBy);
            System.out.println("    with " + ge.principals.size() +
                    " Principals");
        }

        this.grantEntry = ge;
    }

    
get the codesource associated with this PolicyEntry
/**
     * get the codesource associated with this PolicyEntry
     */
    CodeSource getCodeSource() {
        return codesource;
    }

    
get the GrantEntry associated with this PolicyEntry
/**
     * get the GrantEntry associated with this PolicyEntry
     */
    PolicyParser.GrantEntry getGrantEntry() {
        return grantEntry;
    }

    
convert the header portion, i.e. codebase, signer, principals, of
this policy entry into a string
/**
     * convert the header portion, i.e. codebase, signer, principals, of
     * this policy entry into a string
     */
    String headerToString() {
        String pString = principalsToString();
        if (pString.length() == 0) {
            return codebaseToString();
        } else {
            return codebaseToString() + ", " + pString;
        }
    }

    
convert the Codebase/signer portion of this policy entry into a string
/**
     * convert the Codebase/signer portion of this policy entry into a string
     */
    String codebaseToString() {

        String stringEntry = new String();

        if (grantEntry.codeBase != null &&
            grantEntry.codeBase.equals("") == false)
            stringEntry = stringEntry.concat
                                ("CodeBase \"" +
                                grantEntry.codeBase +
                                "\"");

        if (grantEntry.signedBy != null &&
            grantEntry.signedBy.equals("") == false)
            stringEntry = ((stringEntry.length() > 0) ?
                stringEntry.concat(", SignedBy \"" +
                                grantEntry.signedBy +
                                "\"") :
                stringEntry.concat("SignedBy \"" +
                                grantEntry.signedBy +
                                "\""));

        if (stringEntry.length() == 0)
            return new String("CodeBase <ALL>");
        return stringEntry;
    }

    
convert the Principals portion of this policy entry into a string
/**
     * convert the Principals portion of this policy entry into a string
     */
    String principalsToString() {
        String result = "";
        if ((grantEntry.principals != null) &&
            (!grantEntry.principals.isEmpty())) {
            StringBuffer buffer = new StringBuffer(200);
            ListIterator<PolicyParser.PrincipalEntry> list =
                                grantEntry.principals.listIterator();
            while (list.hasNext()) {
                PolicyParser.PrincipalEntry pppe = list.next();
                buffer.append(" Principal " + pppe.getDisplayClass() + " " +
                    pppe.getDisplayName(true));
                if (list.hasNext()) buffer.append(", ");
            }
            result = buffer.toString();
        }
        return result;
    }

    
convert this policy entry into a PolicyParser.PermissionEntry
/**
     * convert this policy entry into a PolicyParser.PermissionEntry
     */
    PolicyParser.PermissionEntry toPermissionEntry(Permission perm) {

        String actions = null;

        // get the actions
        if (perm.getActions() != null &&
            perm.getActions().trim() != "")
                actions = perm.getActions();

        PolicyParser.PermissionEntry pe = new PolicyParser.PermissionEntry
                        (perm.getClass().getName(),
                        perm.getName(),
                        actions);
        return pe;
    }
}

The main window for the PolicyTool
/**
 * The main window for the PolicyTool
 */
class ToolWindow extends Frame {
    // use serialVersionUID from JDK 1.2.2 for interoperability
    private static final long serialVersionUID = 5682568601210376777L;

    /* external paddings */
    public static final Insets TOP_PADDING = new Insets(25,0,0,0);
    public static final Insets BOTTOM_PADDING = new Insets(0,0,25,0);
    public static final Insets LITE_BOTTOM_PADDING = new Insets(0,0,10,0);
    public static final Insets LR_PADDING = new Insets(0,10,0,10);
    public static final Insets TOP_BOTTOM_PADDING = new Insets(15, 0, 15, 0);
    public static final Insets L_TOP_BOTTOM_PADDING = new Insets(5,10,15,0);
    public static final Insets LR_BOTTOM_PADDING = new Insets(0,10,5,10);
    public static final Insets L_BOTTOM_PADDING = new Insets(0,10,5,0);
    public static final Insets R_BOTTOM_PADDING = new Insets(0,0,5,10);

    /* buttons and menus */
    public static final String NEW_POLICY_FILE          =
                        PolicyTool.rb.getString("New");
    public static final String OPEN_POLICY_FILE         =
                        PolicyTool.rb.getString("Open");
    public static final String SAVE_POLICY_FILE         =
                        PolicyTool.rb.getString("Save");
    public static final String SAVE_AS_POLICY_FILE      =
                        PolicyTool.rb.getString("Save.As");
    public static final String VIEW_WARNINGS            =
                        PolicyTool.rb.getString("View.Warning.Log");
    public static final String QUIT                     =
                        PolicyTool.rb.getString("Exit");
    public static final String ADD_POLICY_ENTRY         =
                        PolicyTool.rb.getString("Add.Policy.Entry");
    public static final String EDIT_POLICY_ENTRY        =
                        PolicyTool.rb.getString("Edit.Policy.Entry");
    public static final String REMOVE_POLICY_ENTRY      =
                        PolicyTool.rb.getString("Remove.Policy.Entry");
    public static final String EDIT_KEYSTORE            =
                        PolicyTool.rb.getString("Edit");
    public static final String ADD_PUBKEY_ALIAS         =
                        PolicyTool.rb.getString("Add.Public.Key.Alias");
    public static final String REMOVE_PUBKEY_ALIAS      =
                        PolicyTool.rb.getString("Remove.Public.Key.Alias");

    /* gridbag index for components in the main window (MW) */
    public static final int MW_FILENAME_LABEL           = 0;
    public static final int MW_FILENAME_TEXTFIELD       = 1;
    public static final int MW_PANEL                    = 2;
    public static final int MW_ADD_BUTTON               = 0;
    public static final int MW_EDIT_BUTTON              = 1;
    public static final int MW_REMOVE_BUTTON            = 2;
    public static final int MW_POLICY_LIST              = 3; // follows MW_PANEL

    private PolicyTool tool;

    
Constructor
/**
     * Constructor
     */
    ToolWindow(PolicyTool tool) {
        this.tool = tool;
    }

    
Initialize the PolicyTool window with the necessary components
/**
     * Initialize the PolicyTool window with the necessary components
     */
    private void initWindow() {

        // create the top menu bar
        MenuBar menuBar = new MenuBar();

        // create a File menu
        Menu menu = new Menu(PolicyTool.rb.getString("File"));
        menu.add(NEW_POLICY_FILE);
        menu.add(OPEN_POLICY_FILE);
        menu.add(SAVE_POLICY_FILE);
        menu.add(SAVE_AS_POLICY_FILE);
        menu.add(VIEW_WARNINGS);
        menu.add(QUIT);
        menu.addActionListener(new FileMenuListener(tool, this));
        menuBar.add(menu);
        setMenuBar(menuBar);

        // create a KeyStore menu
        menu = new Menu(PolicyTool.rb.getString("KeyStore"));
        menu.add(EDIT_KEYSTORE);
        menu.addActionListener(new MainWindowListener(tool, this));
        menuBar.add(menu);
        setMenuBar(menuBar);


        // policy entry listing
        Label label = new Label(PolicyTool.rb.getString("Policy.File."));
        addNewComponent(this, label, MW_FILENAME_LABEL,
                        0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                        TOP_BOTTOM_PADDING);
        TextField tf = new TextField(50);
        tf.getAccessibleContext().setAccessibleName(
                PolicyTool.rb.getString("Policy.File."));
        tf.setEditable(false);
        addNewComponent(this, tf, MW_FILENAME_TEXTFIELD,
                        1, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                        TOP_BOTTOM_PADDING);


        // add ADD/REMOVE/EDIT buttons in a new panel
        Panel panel = new Panel();
        panel.setLayout(new GridBagLayout());

        Button button = new Button(ADD_POLICY_ENTRY);
        button.addActionListener(new MainWindowListener(tool, this));
        addNewComponent(panel, button, MW_ADD_BUTTON,
                        0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                        LR_PADDING);

        button = new Button(EDIT_POLICY_ENTRY);
        button.addActionListener(new MainWindowListener(tool, this));
        addNewComponent(panel, button, MW_EDIT_BUTTON,
                        1, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                        LR_PADDING);

        button = new Button(REMOVE_POLICY_ENTRY);
        button.addActionListener(new MainWindowListener(tool, this));
        addNewComponent(panel, button, MW_REMOVE_BUTTON,
                        2, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                        LR_PADDING);

        addNewComponent(this, panel, MW_PANEL,
                        0, 2, 2, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                        BOTTOM_PADDING);


        String policyFile = tool.getPolicyFileName();
        if (policyFile == null) {
            String userHome;
            userHome = java.security.AccessController.doPrivileged(
                    new sun.security.action.GetPropertyAction("user.home"));
            policyFile = userHome + File.separatorChar + ".java.policy";
        }

        try {
            // open the policy file
            tool.openPolicy(policyFile);

            // display the policy entries via the policy list textarea
            List list = new List(40, false);
            list.addActionListener(new PolicyListListener(tool, this));
            PolicyEntry entries[] = tool.getEntry();
            if (entries != null) {
                for (int i = 0; i < entries.length; i++)
                    list.add(entries[i].headerToString());
            }
            TextField newFilename = (TextField)
                                getComponent(MW_FILENAME_TEXTFIELD);
            newFilename.setText(policyFile);
            initPolicyList(list);

        } catch (FileNotFoundException fnfe) {
            // add blank policy listing
            List list = new List(40, false);
            list.addActionListener(new PolicyListListener(tool, this));
            initPolicyList(list);
            tool.setPolicyFileName(null);
            tool.modified = false;
            setVisible(true);

            // just add warning
            tool.warnings.addElement(fnfe.toString());

        } catch (Exception e) {
            // add blank policy listing
            List list = new List(40, false);
            list.addActionListener(new PolicyListListener(tool, this));
            initPolicyList(list);
            tool.setPolicyFileName(null);
            tool.modified = false;
            setVisible(true);

            // display the error
            MessageFormat form = new MessageFormat(PolicyTool.rb.getString
                ("Could.not.open.policy.file.policyFile.e.toString."));
            Object[] source = {policyFile, e.toString()};
            displayErrorDialog(null, form.format(source));
        }
    }


    
Add a component to the PolicyTool window
/**
     * Add a component to the PolicyTool window
     */
    void addNewComponent(Container container, Component component,
        int index, int gridx, int gridy, int gridwidth, int gridheight,
        double weightx, double weighty, int fill, Insets is) {

        // add the component at the specified gridbag index
        container.add(component, index);

        // set the constraints
        GridBagLayout gbl = (GridBagLayout)container.getLayout();
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.gridx = gridx;
        gbc.gridy = gridy;
        gbc.gridwidth = gridwidth;
        gbc.gridheight = gridheight;
        gbc.weightx = weightx;
        gbc.weighty = weighty;
        gbc.fill = fill;
        if (is != null) gbc.insets = is;
        gbl.setConstraints(component, gbc);
    }


    
Add a component to the PolicyTool window without external padding
/**
     * Add a component to the PolicyTool window without external padding
     */
    void addNewComponent(Container container, Component component,
        int index, int gridx, int gridy, int gridwidth, int gridheight,
        double weightx, double weighty, int fill) {

        // delegate with "null" external padding
        addNewComponent(container, component, index, gridx, gridy,
                        gridwidth, gridheight, weightx, weighty,
                        fill, null);
    }


    
Init the policy_entry_list TEXTAREA component in the
PolicyTool window
/**
     * Init the policy_entry_list TEXTAREA component in the
     * PolicyTool window
     */
    void initPolicyList(List policyList) {

        // add the policy list to the window
        addNewComponent(this, policyList, MW_POLICY_LIST,
                        0, 3, 2, 1, 1.0, 1.0, GridBagConstraints.BOTH);
    }

    
Replace the policy_entry_list TEXTAREA component in the
PolicyTool window with an updated one.
/**
     * Replace the policy_entry_list TEXTAREA component in the
     * PolicyTool window with an updated one.
     */
    void replacePolicyList(List policyList) {

        // remove the original list of Policy Entries
        // and add the new list of entries
        List list = (List)getComponent(MW_POLICY_LIST);
        list.removeAll();
        String newItems[] = policyList.getItems();
        for (int i = 0; i < newItems.length; i++)
            list.add(newItems[i]);
    }

    
display the main PolicyTool window
/**
     * display the main PolicyTool window
     */
    void displayToolWindow(String args[]) {

        setTitle(PolicyTool.rb.getString("Policy.Tool"));
        setResizable(true);
        addWindowListener(new ToolWindowListener(this));
        setBounds(135, 80, 500, 500);
        setLayout(new GridBagLayout());

        initWindow();

        // display it
        setVisible(true);

        if (tool.newWarning == true) {
            displayStatusDialog(this, PolicyTool.rb.getString
                ("Errors.have.occurred.while.opening.the.policy.configuration.View.the.Warning.Log.for.more.information."));
        }
    }

    
displays a dialog box describing an error which occurred.
/**
     * displays a dialog box describing an error which occurred.
     */
    void displayErrorDialog(Window w, String error) {
        ToolDialog ed = new ToolDialog
                (PolicyTool.rb.getString("Error"), tool, this, true);

        // find where the PolicyTool gui is
        Point location = ((w == null) ?
                getLocationOnScreen() : w.getLocationOnScreen());
        ed.setBounds(location.x + 50, location.y + 50, 600, 100);
        ed.setLayout(new GridBagLayout());

        Label label = new Label(error);
        addNewComponent(ed, label, 0,
                        0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH);

        Button okButton = new Button(PolicyTool.rb.getString("OK"));
        okButton.addActionListener(new ErrorOKButtonListener(ed));
        addNewComponent(ed, okButton, 1,
                        0, 1, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL);

        ed.pack();
        ed.setVisible(true);
    }

    
displays a dialog box describing an error which occurred.
/**
     * displays a dialog box describing an error which occurred.
     */
    void displayErrorDialog(Window w, Throwable t) {
        if (t instanceof NoDisplayException) {
            return;
        }
        displayErrorDialog(w, t.toString());
    }

    
displays a dialog box describing the status of an event
/**
     * displays a dialog box describing the status of an event
     */
    void displayStatusDialog(Window w, String status) {
        ToolDialog sd = new ToolDialog
                (PolicyTool.rb.getString("Status"), tool, this, true);

        // find the location of the PolicyTool gui
        Point location = ((w == null) ?
                getLocationOnScreen() : w.getLocationOnScreen());
        sd.setBounds(location.x + 50, location.y + 50, 500, 100);
        sd.setLayout(new GridBagLayout());

        Label label = new Label(status);
        addNewComponent(sd, label, 0,
                        0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH);

        Button okButton = new Button(PolicyTool.rb.getString("OK"));
        okButton.addActionListener(new StatusOKButtonListener(sd));
        addNewComponent(sd, okButton, 1,
                        0, 1, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL);
        sd.pack();
        sd.setVisible(true);
    }

    
display the warning log
/**
     * display the warning log
     */
    void displayWarningLog(Window w) {

        ToolDialog wd = new ToolDialog
                (PolicyTool.rb.getString("Warning"), tool, this, true);

        // find the location of the PolicyTool gui
        Point location = ((w == null) ?
                getLocationOnScreen() : w.getLocationOnScreen());
        wd.setBounds(location.x + 50, location.y + 50, 500, 100);
        wd.setLayout(new GridBagLayout());

        TextArea ta = new TextArea();
        ta.setEditable(false);
        for (int i = 0; i < tool.warnings.size(); i++) {
            ta.append(tool.warnings.elementAt(i));
            ta.append(PolicyTool.rb.getString("NEWLINE"));
        }
        addNewComponent(wd, ta, 0,
                        0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                        BOTTOM_PADDING);
        ta.setFocusable(false);

        Button okButton = new Button(PolicyTool.rb.getString("OK"));
        okButton.addActionListener(new CancelButtonListener(wd));
        addNewComponent(wd, okButton, 1,
                        0, 1, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL,
                        LR_PADDING);

        wd.pack();
        wd.setVisible(true);
    }

    char displayYesNoDialog(Window w, String title, String prompt, String yes, String no) {

        final ToolDialog tw = new ToolDialog
                (title, tool, this, true);
        Point location = ((w == null) ?
                getLocationOnScreen() : w.getLocationOnScreen());
        tw.setBounds(location.x + 75, location.y + 100, 400, 150);
        tw.setLayout(new GridBagLayout());

        TextArea ta = new TextArea(prompt, 10, 50, TextArea.SCROLLBARS_VERTICAL_ONLY);
        ta.setEditable(false);
        addNewComponent(tw, ta, 0,
                0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH);
        ta.setFocusable(false);

        Panel panel = new Panel();
        panel.setLayout(new GridBagLayout());

        // StringBuffer to store button press. Must be final.
        final StringBuffer chooseResult = new StringBuffer();

        Button button = new Button(yes);
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                chooseResult.append('Y');
                tw.setVisible(false);
                tw.dispose();
            }
        });
        addNewComponent(panel, button, 0,
                           0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL,
                           LR_PADDING);

        button = new Button(no);
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                chooseResult.append('N');
                tw.setVisible(false);
                tw.dispose();
            }
        });
        addNewComponent(panel, button, 1,
                           1, 0, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL,
                           LR_PADDING);

        addNewComponent(tw, panel, 1,
                0, 1, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL);

        tw.pack();
        tw.setVisible(true);
        if (chooseResult.length() > 0) {
            return chooseResult.charAt(0);
        } else {
            // I did encounter this once, don't why.
            return 'N';
        }
    }

}

General dialog window
/**
 * General dialog window
 */
class ToolDialog extends Dialog {
    // use serialVersionUID from JDK 1.2.2 for interoperability
    private static final long serialVersionUID = -372244357011301190L;

    /* necessary constants */
    public static final int NOACTION            = 0;
    public static final int QUIT                = 1;
    public static final int NEW                 = 2;
    public static final int OPEN                = 3;

    public static final String ALL_PERM_CLASS   =
                "java.security.AllPermission";
    public static final String FILE_PERM_CLASS  =
                "java.io.FilePermission";

    public static final String X500_PRIN_CLASS         =
                "javax.security.auth.x500.X500Principal";

    /* popup menus */
    public static final String PERM             =
        PolicyTool.rb.getString
        ("Permission.");

    public static final String PRIN_TYPE        =
        PolicyTool.rb.getString("Principal.Type.");
    public static final String PRIN_NAME        =
        PolicyTool.rb.getString("Principal.Name.");

    /* more popu menus */
    public static final String PERM_NAME        =
        PolicyTool.rb.getString
        ("Target.Name.");

    /* and more popup menus */
    public static final String PERM_ACTIONS             =
      PolicyTool.rb.getString
      ("Actions.");

    /* gridbag index for display PolicyEntry (PE) components */
    public static final int PE_CODEBASE_LABEL           = 0;
    public static final int PE_CODEBASE_TEXTFIELD       = 1;
    public static final int PE_SIGNEDBY_LABEL           = 2;
    public static final int PE_SIGNEDBY_TEXTFIELD       = 3;

    public static final int PE_PANEL0                   = 4;
    public static final int PE_ADD_PRIN_BUTTON          = 0;
    public static final int PE_EDIT_PRIN_BUTTON         = 1;
    public static final int PE_REMOVE_PRIN_BUTTON       = 2;

    public static final int PE_PRIN_LABEL               = 5;
    public static final int PE_PRIN_LIST                = 6;

    public static final int PE_PANEL1                   = 7;
    public static final int PE_ADD_PERM_BUTTON          = 0;
    public static final int PE_EDIT_PERM_BUTTON         = 1;
    public static final int PE_REMOVE_PERM_BUTTON       = 2;

    public static final int PE_PERM_LIST                = 8;

    public static final int PE_PANEL2                   = 9;
    public static final int PE_CANCEL_BUTTON            = 1;
    public static final int PE_DONE_BUTTON              = 0;

    /* the gridbag index for components in the Principal Dialog (PRD) */
    public static final int PRD_DESC_LABEL              = 0;
    public static final int PRD_PRIN_CHOICE             = 1;
    public static final int PRD_PRIN_TEXTFIELD          = 2;
    public static final int PRD_NAME_LABEL              = 3;
    public static final int PRD_NAME_TEXTFIELD          = 4;
    public static final int PRD_CANCEL_BUTTON           = 6;
    public static final int PRD_OK_BUTTON               = 5;

    /* the gridbag index for components in the Permission Dialog (PD) */
    public static final int PD_DESC_LABEL               = 0;
    public static final int PD_PERM_CHOICE              = 1;
    public static final int PD_PERM_TEXTFIELD           = 2;
    public static final int PD_NAME_CHOICE              = 3;
    public static final int PD_NAME_TEXTFIELD           = 4;
    public static final int PD_ACTIONS_CHOICE           = 5;
    public static final int PD_ACTIONS_TEXTFIELD        = 6;
    public static final int PD_SIGNEDBY_LABEL           = 7;
    public static final int PD_SIGNEDBY_TEXTFIELD       = 8;
    public static final int PD_CANCEL_BUTTON            = 10;
    public static final int PD_OK_BUTTON                = 9;

    /* modes for KeyStore */
    public static final int EDIT_KEYSTORE               = 0;

    /* the gridbag index for components in the Change KeyStore Dialog (KSD) */
    public static final int KSD_NAME_LABEL              = 0;
    public static final int KSD_NAME_TEXTFIELD          = 1;
    public static final int KSD_TYPE_LABEL              = 2;
    public static final int KSD_TYPE_TEXTFIELD          = 3;
    public static final int KSD_PROVIDER_LABEL          = 4;
    public static final int KSD_PROVIDER_TEXTFIELD      = 5;
    public static final int KSD_PWD_URL_LABEL           = 6;
    public static final int KSD_PWD_URL_TEXTFIELD       = 7;
    public static final int KSD_CANCEL_BUTTON           = 9;
    public static final int KSD_OK_BUTTON               = 8;

    /* the gridbag index for components in the User Save Changes Dialog (USC) */
    public static final int USC_LABEL                   = 0;
    public static final int USC_PANEL                   = 1;
    public static final int USC_YES_BUTTON              = 0;
    public static final int USC_NO_BUTTON               = 1;
    public static final int USC_CANCEL_BUTTON           = 2;

    /* gridbag index for the ConfirmRemovePolicyEntryDialog (CRPE) */
    public static final int CRPE_LABEL1                 = 0;
    public static final int CRPE_LABEL2                 = 1;
    public static final int CRPE_PANEL                  = 2;
    public static final int CRPE_PANEL_OK               = 0;
    public static final int CRPE_PANEL_CANCEL           = 1;

    /* some private static finals */
    private static final int PERMISSION                 = 0;
    private static final int PERMISSION_NAME            = 1;
    private static final int PERMISSION_ACTIONS         = 2;
    private static final int PERMISSION_SIGNEDBY        = 3;
    private static final int PRINCIPAL_TYPE             = 4;
    private static final int PRINCIPAL_NAME             = 5;

    public static java.util.ArrayList<Perm> PERM_ARRAY;
    public static java.util.ArrayList<Prin> PRIN_ARRAY;
    PolicyTool tool;
    ToolWindow tw;

    static {

        // set up permission objects

        PERM_ARRAY = new java.util.ArrayList<Perm>();
        PERM_ARRAY.add(new AllPerm());
        PERM_ARRAY.add(new AudioPerm());
        PERM_ARRAY.add(new AuthPerm());
        PERM_ARRAY.add(new AWTPerm());
        PERM_ARRAY.add(new DelegationPerm());
        PERM_ARRAY.add(new FilePerm());
        PERM_ARRAY.add(new InqSecContextPerm());
        PERM_ARRAY.add(new LogPerm());
        PERM_ARRAY.add(new MgmtPerm());
        PERM_ARRAY.add(new MBeanPerm());
        PERM_ARRAY.add(new MBeanSvrPerm());
        PERM_ARRAY.add(new MBeanTrustPerm());
        PERM_ARRAY.add(new NetPerm());
        PERM_ARRAY.add(new PrivCredPerm());
        PERM_ARRAY.add(new PropPerm());
        PERM_ARRAY.add(new ReflectPerm());
        PERM_ARRAY.add(new RuntimePerm());
        PERM_ARRAY.add(new SecurityPerm());
        PERM_ARRAY.add(new SerialPerm());
        PERM_ARRAY.add(new ServicePerm());
        PERM_ARRAY.add(new SocketPerm());
        PERM_ARRAY.add(new SQLPerm());
        PERM_ARRAY.add(new SSLPerm());
        PERM_ARRAY.add(new SubjDelegPerm());

        // set up principal objects

        PRIN_ARRAY = new java.util.ArrayList<Prin>();
        PRIN_ARRAY.add(new KrbPrin());
        PRIN_ARRAY.add(new X500Prin());
    }

    ToolDialog(String title, PolicyTool tool, ToolWindow tw, boolean modal) {
        super(tw, modal);
        setTitle(title);
        this.tool = tool;
        this.tw = tw;
        addWindowListener(new ChildWindowListener(this));
    }

    
get the Perm instance based on either the (shortened) class name
or the fully qualified class name
/**
     * get the Perm instance based on either the (shortened) class name
     * or the fully qualified class name
     */
    static Perm getPerm(String clazz, boolean fullClassName) {
        for (int i = 0; i < PERM_ARRAY.size(); i++) {
            Perm next = PERM_ARRAY.get(i);
            if (fullClassName) {
                if (next.FULL_CLASS.equals(clazz)) {
                    return next;
                }
            } else {
                if (next.CLASS.equals(clazz)) {
                    return next;
                }
            }
        }
        return null;
    }

    
get the Prin instance based on either the (shortened) class name
or the fully qualified class name
/**
     * get the Prin instance based on either the (shortened) class name
     * or the fully qualified class name
     */
    static Prin getPrin(String clazz, boolean fullClassName) {
        for (int i = 0; i < PRIN_ARRAY.size(); i++) {
            Prin next = PRIN_ARRAY.get(i);
            if (fullClassName) {
                if (next.FULL_CLASS.equals(clazz)) {
                    return next;
                }
            } else {
                if (next.CLASS.equals(clazz)) {
                    return next;
                }
            }
        }
        return null;
    }

    
pop up a dialog so the user can enter info to add a new PolicyEntry
- if edit is TRUE, then the user is editing an existing entry
  and we should display the original info as well.
- the other reason we need the 'edit' boolean is we need to know
  when we are adding a NEW policy entry.  in this case, we can
  not simply update the existing entry, because it doesn't exist.
  we ONLY update the GUI listing/info, and then when the user
  finally clicks 'OK' or 'DONE', then we can collect that info
  and add it to the policy.
/**
     * pop up a dialog so the user can enter info to add a new PolicyEntry
     * - if edit is TRUE, then the user is editing an existing entry
     *   and we should display the original info as well.
     *
     * - the other reason we need the 'edit' boolean is we need to know
     *   when we are adding a NEW policy entry.  in this case, we can
     *   not simply update the existing entry, because it doesn't exist.
     *   we ONLY update the GUI listing/info, and then when the user
     *   finally clicks 'OK' or 'DONE', then we can collect that info
     *   and add it to the policy.
     */
    void displayPolicyEntryDialog(boolean edit) {

        int listIndex = 0;
        PolicyEntry entries[] = null;
        TaggedList prinList = new TaggedList(3, false);
        prinList.getAccessibleContext().setAccessibleName(
                PolicyTool.rb.getString("Principal.List"));
        prinList.addActionListener
                (new EditPrinButtonListener(tool, tw, this, edit));
        TaggedList permList = new TaggedList(10, false);
        permList.getAccessibleContext().setAccessibleName(
                PolicyTool.rb.getString("Permission.List"));
        permList.addActionListener
                (new EditPermButtonListener(tool, tw, this, edit));

        // find where the PolicyTool gui is
        Point location = tw.getLocationOnScreen();
        setBounds(location.x + 75, location.y + 200, 650, 500);
        setLayout(new GridBagLayout());
        setResizable(true);

        if (edit) {
            // get the selected item
            entries = tool.getEntry();
            List policyList = (List)tw.getComponent(ToolWindow.MW_POLICY_LIST);
            listIndex = policyList.getSelectedIndex();

            // get principal list
            LinkedList<PolicyParser.PrincipalEntry> principals =
                entries[listIndex].getGrantEntry().principals;
            for (int i = 0; i < principals.size(); i++) {
                String prinString = null;
                PolicyParser.PrincipalEntry nextPrin = principals.get(i);
                prinList.addTaggedItem(PrincipalEntryToUserFriendlyString(nextPrin), nextPrin);
            }

            // get permission list
            Vector<PolicyParser.PermissionEntry> permissions =
                entries[listIndex].getGrantEntry().permissionEntries;
            for (int i = 0; i < permissions.size(); i++) {
                String permString = null;
                PolicyParser.PermissionEntry nextPerm =
                                                permissions.elementAt(i);
                permList.addTaggedItem(ToolDialog.PermissionEntryToUserFriendlyString(nextPerm), nextPerm);
            }
        }

        // codebase label and textfield
        Label label = new Label(PolicyTool.rb.getString("CodeBase."));
        tw.addNewComponent(this, label, PE_CODEBASE_LABEL,
                0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH);
        TextField tf;
        tf = (edit ?
                new TextField(entries[listIndex].getGrantEntry().codeBase, 60) :
                new TextField(60));
        tf.getAccessibleContext().setAccessibleName(
                PolicyTool.rb.getString("Code.Base"));
        tw.addNewComponent(this, tf, PE_CODEBASE_TEXTFIELD,
                1, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH);

        // signedby label and textfield
        label = new Label(PolicyTool.rb.getString("SignedBy."));
        tw.addNewComponent(this, label, PE_SIGNEDBY_LABEL,
                           0, 1, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH);
        tf = (edit ?
                new TextField(entries[listIndex].getGrantEntry().signedBy, 60) :
                new TextField(60));
        tf.getAccessibleContext().setAccessibleName(
                PolicyTool.rb.getString("Signed.By."));
        tw.addNewComponent(this, tf, PE_SIGNEDBY_TEXTFIELD,
                           1, 1, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH);

        // panel for principal buttons
        Panel panel = new Panel();
        panel.setLayout(new GridBagLayout());

        Button button = new Button(PolicyTool.rb.getString("Add.Principal"));
        button.addActionListener
                (new AddPrinButtonListener(tool, tw, this, edit));
        tw.addNewComponent(panel, button, PE_ADD_PRIN_BUTTON,
                0, 0, 1, 1, 100.0, 0.0, GridBagConstraints.HORIZONTAL);

        button = new Button(PolicyTool.rb.getString("Edit.Principal"));
        button.addActionListener(new EditPrinButtonListener
                                                (tool, tw, this, edit));
        tw.addNewComponent(panel, button, PE_EDIT_PRIN_BUTTON,
                1, 0, 1, 1, 100.0, 0.0, GridBagConstraints.HORIZONTAL);

        button = new Button(PolicyTool.rb.getString("Remove.Principal"));
        button.addActionListener(new RemovePrinButtonListener
                                        (tool, tw, this, edit));
        tw.addNewComponent(panel, button, PE_REMOVE_PRIN_BUTTON,
                2, 0, 1, 1, 100.0, 0.0, GridBagConstraints.HORIZONTAL);

        tw.addNewComponent(this, panel, PE_PANEL0,
                1, 2, 1, 1, 0.0, 0.0, GridBagConstraints.HORIZONTAL);

        // principal label and list
        label = new Label(PolicyTool.rb.getString("Principals."));
        tw.addNewComponent(this, label, PE_PRIN_LABEL,
                           0, 3, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.BOTTOM_PADDING);
        tw.addNewComponent(this, prinList, PE_PRIN_LIST,
                           1, 3, 3, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.BOTTOM_PADDING);

        // panel for permission buttons
        panel = new Panel();
        panel.setLayout(new GridBagLayout());

        button = new Button(PolicyTool.rb.getString(".Add.Permission"));
        button.addActionListener(new AddPermButtonListener
                                                (tool, tw, this, edit));
        tw.addNewComponent(panel, button, PE_ADD_PERM_BUTTON,
                0, 0, 1, 1, 100.0, 0.0, GridBagConstraints.HORIZONTAL);

        button = new Button(PolicyTool.rb.getString(".Edit.Permission"));
        button.addActionListener(new EditPermButtonListener
                                                (tool, tw, this, edit));
        tw.addNewComponent(panel, button, PE_EDIT_PERM_BUTTON,
                1, 0, 1, 1, 100.0, 0.0, GridBagConstraints.HORIZONTAL);


        button = new Button(PolicyTool.rb.getString("Remove.Permission"));
        button.addActionListener(new RemovePermButtonListener
                                        (tool, tw, this, edit));
        tw.addNewComponent(panel, button, PE_REMOVE_PERM_BUTTON,
                2, 0, 1, 1, 100.0, 0.0, GridBagConstraints.HORIZONTAL);

        tw.addNewComponent(this, panel, PE_PANEL1,
                0, 4, 2, 1, 0.0, 0.0, GridBagConstraints.HORIZONTAL,
                ToolWindow.LITE_BOTTOM_PADDING);

        // permission list
        tw.addNewComponent(this, permList, PE_PERM_LIST,
                           0, 5, 3, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.BOTTOM_PADDING);


        // panel for Done and Cancel buttons
        panel = new Panel();
        panel.setLayout(new GridBagLayout());

        // Done Button
        button = new Button(PolicyTool.rb.getString("Done"));
        button.addActionListener
                (new AddEntryDoneButtonListener(tool, tw, this, edit));
        tw.addNewComponent(panel, button, PE_DONE_BUTTON,
                           0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL,
                           ToolWindow.LR_PADDING);

        // Cancel Button
        button = new Button(PolicyTool.rb.getString("Cancel"));
        button.addActionListener(new CancelButtonListener(this));
        tw.addNewComponent(panel, button, PE_CANCEL_BUTTON,
                           1, 0, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL,
                           ToolWindow.LR_PADDING);

        // add the panel
        tw.addNewComponent(this, panel, PE_PANEL2,
                0, 6, 2, 1, 0.0, 0.0, GridBagConstraints.VERTICAL);

        setVisible(true);
    }

    
Read all the Policy information data in the dialog box
and construct a PolicyEntry object with it.
/**
     * Read all the Policy information data in the dialog box
     * and construct a PolicyEntry object with it.
     */
    PolicyEntry getPolicyEntryFromDialog()
        throws InvalidParameterException, MalformedURLException,
        NoSuchMethodException, ClassNotFoundException, InstantiationException,
        IllegalAccessException, InvocationTargetException,
        CertificateException, IOException, Exception {

        // get the Codebase
        TextField tf = (TextField)getComponent(PE_CODEBASE_TEXTFIELD);
        String codebase = null;
        if (tf.getText().trim().equals("") == false)
                codebase = new String(tf.getText().trim());

        // get the SignedBy
        tf = (TextField)getComponent(PE_SIGNEDBY_TEXTFIELD);
        String signedby = null;
        if (tf.getText().trim().equals("") == false)
                signedby = new String(tf.getText().trim());

        // construct a new GrantEntry
        PolicyParser.GrantEntry ge =
                        new PolicyParser.GrantEntry(signedby, codebase);

        // get the new Principals
        LinkedList<PolicyParser.PrincipalEntry> prins = new LinkedList<>();
        TaggedList prinList = (TaggedList)getComponent(PE_PRIN_LIST);
        for (int i = 0; i < prinList.getItemCount(); i++) {
            prins.add((PolicyParser.PrincipalEntry)prinList.getObject(i));
        }
        ge.principals = prins;

        // get the new Permissions
        Vector<PolicyParser.PermissionEntry> perms = new Vector<>();
        TaggedList permList = (TaggedList)getComponent(PE_PERM_LIST);
        for (int i = 0; i < permList.getItemCount(); i++) {
            perms.addElement((PolicyParser.PermissionEntry)permList.getObject(i));
        }
        ge.permissionEntries = perms;

        // construct a new PolicyEntry object
        PolicyEntry entry = new PolicyEntry(tool, ge);

        return entry;
    }

    
display a dialog box for the user to enter KeyStore information
/**
     * display a dialog box for the user to enter KeyStore information
     */
    void keyStoreDialog(int mode) {

        // find where the PolicyTool gui is
        Point location = tw.getLocationOnScreen();
        setBounds(location.x + 25, location.y + 100, 500, 300);
        setLayout(new GridBagLayout());

        if (mode == EDIT_KEYSTORE) {

            // KeyStore label and textfield
            Label label = new Label
                        (PolicyTool.rb.getString("KeyStore.URL."));
            tw.addNewComponent(this, label, KSD_NAME_LABEL,
                               0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                               ToolWindow.BOTTOM_PADDING);
            TextField tf = new TextField(tool.getKeyStoreName(), 30);

            // URL to U R L, so that accessibility reader will pronounce well
            tf.getAccessibleContext().setAccessibleName(
                PolicyTool.rb.getString("KeyStore.U.R.L."));
            tw.addNewComponent(this, tf, KSD_NAME_TEXTFIELD,
                               1, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                               ToolWindow.BOTTOM_PADDING);

            // KeyStore type and textfield
            label = new Label(PolicyTool.rb.getString("KeyStore.Type."));
            tw.addNewComponent(this, label, KSD_TYPE_LABEL,
                               0, 1, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                               ToolWindow.BOTTOM_PADDING);
            tf = new TextField(tool.getKeyStoreType(), 30);
            tf.getAccessibleContext().setAccessibleName(
                PolicyTool.rb.getString("KeyStore.Type."));
            tw.addNewComponent(this, tf, KSD_TYPE_TEXTFIELD,
                               1, 1, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                               ToolWindow.BOTTOM_PADDING);

            // KeyStore provider and textfield
            label = new Label(PolicyTool.rb.getString
                                ("KeyStore.Provider."));
            tw.addNewComponent(this, label, KSD_PROVIDER_LABEL,
                               0, 2, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                               ToolWindow.BOTTOM_PADDING);
            tf = new TextField(tool.getKeyStoreProvider(), 30);
            tf.getAccessibleContext().setAccessibleName(
                PolicyTool.rb.getString("KeyStore.Provider."));
            tw.addNewComponent(this, tf, KSD_PROVIDER_TEXTFIELD,
                               1, 2, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                               ToolWindow.BOTTOM_PADDING);

            // KeyStore password URL and textfield
            label = new Label(PolicyTool.rb.getString
                                ("KeyStore.Password.URL."));
            tw.addNewComponent(this, label, KSD_PWD_URL_LABEL,
                               0, 3, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                               ToolWindow.BOTTOM_PADDING);
            tf = new TextField(tool.getKeyStorePwdURL(), 30);
            tf.getAccessibleContext().setAccessibleName(
                PolicyTool.rb.getString("KeyStore.Password.U.R.L."));
            tw.addNewComponent(this, tf, KSD_PWD_URL_TEXTFIELD,
                               1, 3, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                               ToolWindow.BOTTOM_PADDING);

            // OK button
            Button okButton = new Button(PolicyTool.rb.getString("OK"));
            okButton.addActionListener
                        (new ChangeKeyStoreOKButtonListener(tool, tw, this));
            tw.addNewComponent(this, okButton, KSD_OK_BUTTON,
                        0, 4, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL);

            // cancel button
            Button cancelButton = new Button(PolicyTool.rb.getString("Cancel"));
            cancelButton.addActionListener(new CancelButtonListener(this));
            tw.addNewComponent(this, cancelButton, KSD_CANCEL_BUTTON,
                        1, 4, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL);

        }
        setVisible(true);
    }

    
display a dialog box for the user to input Principal info
if editPolicyEntry is false, then we are adding Principals to
a new PolicyEntry, and we only update the GUI listing
with the new Principal.
if edit is true, then we are editing an existing Policy entry.
/**
     * display a dialog box for the user to input Principal info
     *
     * if editPolicyEntry is false, then we are adding Principals to
     * a new PolicyEntry, and we only update the GUI listing
     * with the new Principal.
     *
     * if edit is true, then we are editing an existing Policy entry.
     */
    void displayPrincipalDialog(boolean editPolicyEntry, boolean edit) {

        PolicyParser.PrincipalEntry editMe = null;

        // get the Principal selected from the Principal List
        TaggedList prinList = (TaggedList)getComponent(PE_PRIN_LIST);
        int prinIndex = prinList.getSelectedIndex();

        if (edit) {
            editMe = (PolicyParser.PrincipalEntry)prinList.getObject(prinIndex);
        }

        ToolDialog newTD = new ToolDialog
                (PolicyTool.rb.getString("Principals"), tool, tw, true);
        newTD.addWindowListener(new ChildWindowListener(newTD));

        // find where the PolicyTool gui is
        Point location = getLocationOnScreen();
        newTD.setBounds(location.x + 50, location.y + 100, 650, 190);
        newTD.setLayout(new GridBagLayout());
        newTD.setResizable(true);

        // description label
        Label label = (edit ?
                new Label(PolicyTool.rb.getString(".Edit.Principal.")) :
                new Label(PolicyTool.rb.getString(".Add.New.Principal.")));
        tw.addNewComponent(newTD, label, PRD_DESC_LABEL,
                           0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.TOP_BOTTOM_PADDING);

        // principal choice
        Choice choice = new Choice();
        choice.add(PRIN_TYPE);
        choice.getAccessibleContext().setAccessibleName(PRIN_TYPE);
        for (int i = 0; i < PRIN_ARRAY.size(); i++) {
            Prin next = PRIN_ARRAY.get(i);
            choice.add(next.CLASS);
        }

        choice.addItemListener(new PrincipalTypeMenuListener(newTD));
        if (edit) {
            if (PolicyParser.PrincipalEntry.WILDCARD_CLASS.equals
                                (editMe.getPrincipalClass())) {
                choice.select(PRIN_TYPE);
            } else {
                Prin inputPrin = getPrin(editMe.getPrincipalClass(), true);
                if (inputPrin != null) {
                    choice.select(inputPrin.CLASS);
                }
            }
        }

        tw.addNewComponent(newTD, choice, PRD_PRIN_CHOICE,
                           0, 1, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);

        // principal textfield
        TextField tf;
        tf = (edit ?
                new TextField(editMe.getDisplayClass(), 30) :
                new TextField(30));
        tf.getAccessibleContext().setAccessibleName(PRIN_TYPE);
        tw.addNewComponent(newTD, tf, PRD_PRIN_TEXTFIELD,
                           1, 1, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);

        // name label and textfield
        label = new Label(PRIN_NAME);
        tf = (edit ?
                new TextField(editMe.getDisplayName(), 40) :
                new TextField(40));
        tf.getAccessibleContext().setAccessibleName(PRIN_NAME);

        tw.addNewComponent(newTD, label, PRD_NAME_LABEL,
                           0, 2, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);
        tw.addNewComponent(newTD, tf, PRD_NAME_TEXTFIELD,
                           1, 2, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);

        // OK button
        Button okButton = new Button(PolicyTool.rb.getString("OK"));
        okButton.addActionListener(
            new NewPolicyPrinOKButtonListener
                                        (tool, tw, this, newTD, edit));
        tw.addNewComponent(newTD, okButton, PRD_OK_BUTTON,
                           0, 3, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL,
                           ToolWindow.TOP_BOTTOM_PADDING);
        // cancel button
        Button cancelButton = new Button(PolicyTool.rb.getString("Cancel"));
        cancelButton.addActionListener(new CancelButtonListener(newTD));
        tw.addNewComponent(newTD, cancelButton, PRD_CANCEL_BUTTON,
                           1, 3, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL,
                           ToolWindow.TOP_BOTTOM_PADDING);

        newTD.setVisible(true);
    }

    
display a dialog box for the user to input Permission info
if editPolicyEntry is false, then we are adding Permissions to
a new PolicyEntry, and we only update the GUI listing
with the new Permission.
if edit is true, then we are editing an existing Permission entry.
/**
     * display a dialog box for the user to input Permission info
     *
     * if editPolicyEntry is false, then we are adding Permissions to
     * a new PolicyEntry, and we only update the GUI listing
     * with the new Permission.
     *
     * if edit is true, then we are editing an existing Permission entry.
     */
    void displayPermissionDialog(boolean editPolicyEntry, boolean edit) {

        PolicyParser.PermissionEntry editMe = null;

        // get the Permission selected from the Permission List
        TaggedList permList = (TaggedList)getComponent(PE_PERM_LIST);
        int permIndex = permList.getSelectedIndex();

        if (edit) {
            editMe = (PolicyParser.PermissionEntry)permList.getObject(permIndex);
        }

        ToolDialog newTD = new ToolDialog
                (PolicyTool.rb.getString("Permissions"), tool, tw, true);
        newTD.addWindowListener(new ChildWindowListener(newTD));

        // find where the PolicyTool gui is
        Point location = getLocationOnScreen();
        newTD.setBounds(location.x + 50, location.y + 100, 700, 250);
        newTD.setLayout(new GridBagLayout());
        newTD.setResizable(true);

        // description label
        Label label = (edit ?
                new Label(PolicyTool.rb.getString(".Edit.Permission.")) :
                new Label(PolicyTool.rb.getString(".Add.New.Permission.")));
        tw.addNewComponent(newTD, label, PD_DESC_LABEL,
                           0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.TOP_BOTTOM_PADDING);

        // permission choice (added in alphabetical order)
        Choice choice = new Choice();
        choice.add(PERM);
        choice.getAccessibleContext().setAccessibleName(PERM);
        for (int i = 0; i < PERM_ARRAY.size(); i++) {
            Perm next = PERM_ARRAY.get(i);
            choice.add(next.CLASS);
        }
        choice.addItemListener(new PermissionMenuListener(newTD));
        tw.addNewComponent(newTD, choice, PD_PERM_CHOICE,
                           0, 1, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);

        // permission textfield
        TextField tf;
        tf = (edit ? new TextField(editMe.permission, 30) : new TextField(30));
        tf.getAccessibleContext().setAccessibleName(PERM);
        if (edit) {
            Perm inputPerm = getPerm(editMe.permission, true);
            if (inputPerm != null) {
                choice.select(inputPerm.CLASS);
            }
        }
        tw.addNewComponent(newTD, tf, PD_PERM_TEXTFIELD,
                           1, 1, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);

        // name label and textfield
        choice = new Choice();
        choice.add(PERM_NAME);
        choice.getAccessibleContext().setAccessibleName(PERM_NAME);
        choice.addItemListener(new PermissionNameMenuListener(newTD));
        tf = (edit ? new TextField(editMe.name, 40) : new TextField(40));
        tf.getAccessibleContext().setAccessibleName(PERM_NAME);
        if (edit) {
            setPermissionNames(getPerm(editMe.permission, true), choice, tf);
        }
        tw.addNewComponent(newTD, choice, PD_NAME_CHOICE,
                           0, 2, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);
        tw.addNewComponent(newTD, tf, PD_NAME_TEXTFIELD,
                           1, 2, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);

        // actions label and textfield
        choice = new Choice();
        choice.add(PERM_ACTIONS);
        choice.getAccessibleContext().setAccessibleName(PERM_ACTIONS);
        choice.addItemListener(new PermissionActionsMenuListener(newTD));
        tf = (edit ? new TextField(editMe.action, 40) : new TextField(40));
        tf.getAccessibleContext().setAccessibleName(PERM_ACTIONS);
        if (edit) {
            setPermissionActions(getPerm(editMe.permission, true), choice, tf);
        }
        tw.addNewComponent(newTD, choice, PD_ACTIONS_CHOICE,
                           0, 3, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);
        tw.addNewComponent(newTD, tf, PD_ACTIONS_TEXTFIELD,
                           1, 3, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);

        // signedby label and textfield
        label = new Label(PolicyTool.rb.getString("Signed.By."));
        tw.addNewComponent(newTD, label, PD_SIGNEDBY_LABEL,
                           0, 4, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);
        tf = (edit ? new TextField(editMe.signedBy, 40) : new TextField(40));
        tf.getAccessibleContext().setAccessibleName(
                PolicyTool.rb.getString("Signed.By."));
        tw.addNewComponent(newTD, tf, PD_SIGNEDBY_TEXTFIELD,
                           1, 4, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.LR_PADDING);

        // OK button
        Button okButton = new Button(PolicyTool.rb.getString("OK"));
        okButton.addActionListener(
            new NewPolicyPermOKButtonListener
                                    (tool, tw, this, newTD, edit));
        tw.addNewComponent(newTD, okButton, PD_OK_BUTTON,
                           0, 5, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL,
                           ToolWindow.TOP_BOTTOM_PADDING);

        // cancel button
        Button cancelButton = new Button(PolicyTool.rb.getString("Cancel"));
        cancelButton.addActionListener(new CancelButtonListener(newTD));
        tw.addNewComponent(newTD, cancelButton, PD_CANCEL_BUTTON,
                           1, 5, 1, 1, 0.0, 0.0, GridBagConstraints.VERTICAL,
                           ToolWindow.TOP_BOTTOM_PADDING);

        newTD.setVisible(true);
    }

    
construct a Principal object from the Principal Info Dialog Box
/**
     * construct a Principal object from the Principal Info Dialog Box
     */
    PolicyParser.PrincipalEntry getPrinFromDialog() throws Exception {

        TextField tf = (TextField)getComponent(PRD_PRIN_TEXTFIELD);
        String pclass = new String(tf.getText().trim());
        tf = (TextField)getComponent(PRD_NAME_TEXTFIELD);
        String pname = new String(tf.getText().trim());
        if (pclass.equals("*")) {
            pclass = PolicyParser.PrincipalEntry.WILDCARD_CLASS;
        }
        if (pname.equals("*")) {
            pname = PolicyParser.PrincipalEntry.WILDCARD_NAME;
        }

        PolicyParser.PrincipalEntry pppe = null;

        if ((pclass.equals(PolicyParser.PrincipalEntry.WILDCARD_CLASS)) &&
            (!pname.equals(PolicyParser.PrincipalEntry.WILDCARD_NAME))) {
            throw new Exception
                        (PolicyTool.rb.getString("Cannot.Specify.Principal.with.a.Wildcard.Class.without.a.Wildcard.Name"));
        } else if (pname.equals("")) {
            throw new Exception
                        (PolicyTool.rb.getString("Cannot.Specify.Principal.without.a.Name"));
        } else if (pclass.equals("")) {
            // make this consistent with what PolicyParser does
            // when it sees an empty principal class
            pclass = PolicyParser.REPLACE_NAME;
            tool.warnings.addElement(
                        "Warning: Principal name '" + pname +
                                "' specified without a Principal class.\n" +
                        "\t'" + pname + "' will be interpreted " +
                                "as a key store alias.\n" +
                        "\tThe final principal class will be " +
                                ToolDialog.X500_PRIN_CLASS + ".\n" +
                        "\tThe final principal name will be " +
                                "determined by the following:\n" +
                        "\n" +
                        "\tIf the key store entry identified by '"
                                + pname + "'\n" +
                        "\tis a key entry, then the principal name will be\n" +
                        "\tthe subject distinguished name from the first\n" +
                        "\tcertificate in the entry's certificate chain.\n" +
                        "\n" +
                        "\tIf the key store entry identified by '" +
                                pname + "'\n" +
                        "\tis a trusted certificate entry, then the\n" +
                        "\tprincipal name will be the subject distinguished\n" +
                        "\tname from the trusted public key certificate.");
            tw.displayStatusDialog(this,
                        "'" + pname + "' will be interpreted as a key " +
                        "store alias.  View Warning Log for details.");
        }
        return new PolicyParser.PrincipalEntry(pclass, pname);
    }


    
construct a Permission object from the Permission Info Dialog Box
/**
     * construct a Permission object from the Permission Info Dialog Box
     */
    PolicyParser.PermissionEntry getPermFromDialog() {

        TextField tf = (TextField)getComponent(PD_PERM_TEXTFIELD);
        String permission = new String(tf.getText().trim());
        tf = (TextField)getComponent(PD_NAME_TEXTFIELD);
        String name = null;
        if (tf.getText().trim().equals("") == false)
            name = new String(tf.getText().trim());
        if (permission.equals("") ||
            (!permission.equals(ALL_PERM_CLASS) && name == null)) {
            throw new InvalidParameterException(PolicyTool.rb.getString
                ("Permission.and.Target.Name.must.have.a.value"));
        }

        // When the permission is FilePermission, we need to check the name
        // to make sure it's not escaped. We believe --
        //
        // String             name.lastIndexOf("\\\\")
        // ----------------   ------------------------
        // c:\foo\bar         -1, legal
        // c:\\foo\\bar       2, illegal
        // \\server\share     0, legal
        // \\\\server\share   2, illegal

        if (permission.equals(FILE_PERM_CLASS) && name.lastIndexOf("\\\\") > 0) {
            char result = tw.displayYesNoDialog(this,
                    PolicyTool.rb.getString("Warning"),
                    PolicyTool.rb.getString(
                        "Warning.File.name.may.include.escaped.backslash.characters.It.is.not.necessary.to.escape.backslash.characters.the.tool.escapes"),
                    PolicyTool.rb.getString("Retain"),
                    PolicyTool.rb.getString("Edit")
                    );
            if (result != 'Y') {
                // an invisible exception
                throw new NoDisplayException();
            }
        }
        // get the Actions
        tf = (TextField)getComponent(PD_ACTIONS_TEXTFIELD);
        String actions = null;
        if (tf.getText().trim().equals("") == false)
            actions = new String(tf.getText().trim());

        // get the Signed By
        tf = (TextField)getComponent(PD_SIGNEDBY_TEXTFIELD);
        String signedBy = null;
        if (tf.getText().trim().equals("") == false)
            signedBy = new String(tf.getText().trim());

        PolicyParser.PermissionEntry pppe = new PolicyParser.PermissionEntry
                                (permission, name, actions);
        pppe.signedBy = signedBy;

        // see if the signers have public keys
        if (signedBy != null) {
                String signers[] = tool.parseSigners(pppe.signedBy);
                for (int i = 0; i < signers.length; i++) {
                try {
                    PublicKey pubKey = tool.getPublicKeyAlias(signers[i]);
                    if (pubKey == null) {
                        MessageFormat form = new MessageFormat
                            (PolicyTool.rb.getString
                            ("Warning.A.public.key.for.alias.signers.i.does.not.exist.Make.sure.a.KeyStore.is.properly.configured."));
                        Object[] source = {signers[i]};
                        tool.warnings.addElement(form.format(source));
                        tw.displayStatusDialog(this, form.format(source));
                    }
                } catch (Exception e) {
                    tw.displayErrorDialog(this, e);
                }
            }
        }
        return pppe;
    }

    
confirm that the user REALLY wants to remove the Policy Entry
/**
     * confirm that the user REALLY wants to remove the Policy Entry
     */
    void displayConfirmRemovePolicyEntry() {

        // find the entry to be removed
        List list = (List)tw.getComponent(ToolWindow.MW_POLICY_LIST);
        int index = list.getSelectedIndex();
        PolicyEntry entries[] = tool.getEntry();

        // find where the PolicyTool gui is
        Point location = tw.getLocationOnScreen();
        setBounds(location.x + 25, location.y + 100, 600, 400);
        setLayout(new GridBagLayout());

        // ask the user do they really want to do this?
        Label label = new Label
                (PolicyTool.rb.getString("Remove.this.Policy.Entry."));
        tw.addNewComponent(this, label, CRPE_LABEL1,
                           0, 0, 2, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                           ToolWindow.BOTTOM_PADDING);

        // display the policy entry
        label = new Label(entries[index].codebaseToString());
        tw.addNewComponent(this, label, CRPE_LABEL2,
                        0, 1, 2, 1, 0.0, 0.0, GridBagConstraints.BOTH);
        label = new Label(entries[index].principalsToString().trim());
        tw.addNewComponent(this, label, CRPE_LABEL2+1,
                        0, 2, 2, 1, 0.0, 0.0, GridBagConstraints.BOTH);
        Vector<PolicyParser.PermissionEntry> perms =
                        entries[index].getGrantEntry().permissionEntries;
        for (int i = 0; i < perms.size(); i++) {
            PolicyParser.PermissionEntry nextPerm = perms.elementAt(i);
            String permString = ToolDialog.PermissionEntryToUserFriendlyString(nextPerm);
            label = new Label("    " + permString);
            if (i == (perms.size()-1)) {
                tw.addNewComponent(this, label, CRPE_LABEL2 + 2 + i,
                                 1, 3 + i, 1, 1, 0.0, 0.0,
                                 GridBagConstraints.BOTH,
                                 ToolWindow.BOTTOM_PADDING);
            } else {
                tw.addNewComponent(this, label, CRPE_LABEL2 + 2 + i,
                                 1, 3 + i, 1, 1, 0.0, 0.0,
                                 GridBagConstraints.BOTH);
            }
        }


        // add OK/CANCEL buttons in a new panel
        Panel panel = new Panel();
        panel.setLayout(new GridBagLayout());

        // OK button
        Button okButton = new Button(PolicyTool.rb.getString("OK"));
        okButton.addActionListener
                (new ConfirmRemovePolicyEntryOKButtonListener(tool, tw, this));
        tw.addNewComponent(panel, okButton, CRPE_PANEL_OK,
                           0, 0, 1, 1, 0.0, 0.0,
                           GridBagConstraints.VERTICAL, ToolWindow.LR_PADDING);

        // cancel button
        Button cancelButton = new Button(PolicyTool.rb.getString("Cancel"));
        cancelButton.addActionListener(new CancelButtonListener(this));
        tw.addNewComponent(panel, cancelButton, CRPE_PANEL_CANCEL,
                           1, 0, 1, 1, 0.0, 0.0,
                           GridBagConstraints.VERTICAL, ToolWindow.LR_PADDING);

        tw.addNewComponent(this, panel, CRPE_LABEL2 + 2 + perms.size(),
                           0, 3 + perms.size(), 2, 1, 0.0, 0.0,
                           GridBagConstraints.VERTICAL, ToolWindow.TOP_BOTTOM_PADDING);

        pack();
        setVisible(true);
    }

    
perform SAVE AS
/**
     * perform SAVE AS
     */
    void displaySaveAsDialog(int nextEvent) {

        // pop up a dialog box for the user to enter a filename.
        FileDialog fd = new FileDialog
                (tw, PolicyTool.rb.getString("Save.As"), FileDialog.SAVE);
        fd.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                e.getWindow().setVisible(false);
            }
        });
        fd.setVisible(true);

        // see if the user hit cancel
        if (fd.getFile() == null ||
            fd.getFile().equals(""))
            return;

        // get the entered filename
        File saveAsFile = new File(fd.getDirectory(), fd.getFile());
        String filename = saveAsFile.getPath();
        fd.dispose();

        try {
            // save the policy entries to a file
            tool.savePolicy(filename);

            // display status
            MessageFormat form = new MessageFormat(PolicyTool.rb.getString
                    ("Policy.successfully.written.to.filename"));
            Object[] source = {filename};
            tw.displayStatusDialog(null, form.format(source));

            // display the new policy filename
            TextField newFilename = (TextField)tw.getComponent
                            (ToolWindow.MW_FILENAME_TEXTFIELD);
            newFilename.setText(filename);
            tw.setVisible(true);

            // now continue with the originally requested command
            // (QUIT, NEW, or OPEN)
            userSaveContinue(tool, tw, this, nextEvent);

        } catch (FileNotFoundException fnfe) {
            if (filename == null || filename.equals("")) {
                tw.displayErrorDialog(null, new FileNotFoundException
                            (PolicyTool.rb.getString("null.filename")));
            } else {
                tw.displayErrorDialog(null, fnfe);
            }
        } catch (Exception ee) {
            tw.displayErrorDialog(null, ee);
        }
    }

    
ask user if they want to save changes
/**
     * ask user if they want to save changes
     */
    void displayUserSave(int select) {

        if (tool.modified == true) {

            // find where the PolicyTool gui is
            Point location = tw.getLocationOnScreen();
            setBounds(location.x + 75, location.y + 100, 400, 150);
            setLayout(new GridBagLayout());

            Label label = new Label
                (PolicyTool.rb.getString("Save.changes."));
            tw.addNewComponent(this, label, USC_LABEL,
                               0, 0, 3, 1, 0.0, 0.0, GridBagConstraints.BOTH,
                               ToolWindow.L_TOP_BOTTOM_PADDING);

            Panel panel = new Panel();
            panel.setLayout(new GridBagLayout());

            Button yesButton = new Button(PolicyTool.rb.getString("Yes"));
            yesButton.addActionListener
                        (new UserSaveYesButtonListener(this, tool, tw, select));
            tw.addNewComponent(panel, yesButton, USC_YES_BUTTON,
                               0, 0, 1, 1, 0.0, 0.0,
                               GridBagConstraints.VERTICAL,
                               ToolWindow.LR_BOTTOM_PADDING);
            Button noButton = new Button(PolicyTool.rb.getString("No"));
            noButton.addActionListener
                        (new UserSaveNoButtonListener(this, tool, tw, select));
            tw.addNewComponent(panel, noButton, USC_NO_BUTTON,
                               1, 0, 1, 1, 0.0, 0.0,
                               GridBagConstraints.VERTICAL,
                               ToolWindow.LR_BOTTOM_PADDING);
            Button cancelButton = new Button(PolicyTool.rb.getString("Cancel"));
            cancelButton.addActionListener
                        (new UserSaveCancelButtonListener(this));
            tw.addNewComponent(panel, cancelButton, USC_CANCEL_BUTTON,
                               2, 0, 1, 1, 0.0, 0.0,
                               GridBagConstraints.VERTICAL,
                               ToolWindow.LR_BOTTOM_PADDING);

            tw.addNewComponent(this, panel, USC_PANEL,
                               0, 1, 1, 1, 0.0, 0.0, GridBagConstraints.BOTH);

            pack();
            setVisible(true);
        } else {
            // just do the original request (QUIT, NEW, or OPEN)
            userSaveContinue(tool, tw, this, select);
        }
    }

    
when the user sees the 'YES', 'NO', 'CANCEL' buttons on the
displayUserSave dialog, and the click on one of them,
we need to continue the originally requested action
(either QUITting, opening NEW policy file, or OPENing an existing
policy file.  do that now.
/**
     * when the user sees the 'YES', 'NO', 'CANCEL' buttons on the
     * displayUserSave dialog, and the click on one of them,
     * we need to continue the originally requested action
     * (either QUITting, opening NEW policy file, or OPENing an existing
     * policy file.  do that now.
     */
    @SuppressWarnings("fallthrough")
    void userSaveContinue(PolicyTool tool, ToolWindow tw,
                        ToolDialog us, int select) {

        // now either QUIT, open a NEW policy file, or OPEN an existing policy
        switch(select) {
        case ToolDialog.QUIT:

            tw.setVisible(false);
            tw.dispose();
            System.exit(0);

        case ToolDialog.NEW:

            try {
                tool.openPolicy(null);
            } catch (Exception ee) {
                tool.modified = false;
                tw.displayErrorDialog(null, ee);
            }

            // display the policy entries via the policy list textarea
            List list = new List(40, false);
            list.addActionListener(new PolicyListListener(tool, tw));
            tw.replacePolicyList(list);

            // display null policy filename and keystore
            TextField newFilename = (TextField)tw.getComponent(
                    ToolWindow.MW_FILENAME_TEXTFIELD);
            newFilename.setText("");
            tw.setVisible(true);
            break;

        case ToolDialog.OPEN:

            // pop up a dialog box for the user to enter a filename.
            FileDialog fd = new FileDialog
                (tw, PolicyTool.rb.getString("Open"), FileDialog.LOAD);
            fd.addWindowListener(new WindowAdapter() {
                public void windowClosing(WindowEvent e) {
                    e.getWindow().setVisible(false);
                }
            });
            fd.setVisible(true);

            // see if the user hit 'cancel'
            if (fd.getFile() == null ||
                fd.getFile().equals(""))
                return;

            // get the entered filename
            String policyFile = new File(fd.getDirectory(), fd.getFile()).getPath();

            try {
                // open the policy file
                tool.openPolicy(policyFile);

                // display the policy entries via the policy list textarea
                list = new List(40, false);
                list.addActionListener(new PolicyListListener(tool, tw));
                PolicyEntry entries[] = tool.getEntry();
                if (entries != null) {
                    for (int i = 0; i < entries.length; i++)
                        list.add(entries[i].headerToString());
                }
                tw.replacePolicyList(list);
                tool.modified = false;

                // display the new policy filename
                newFilename = (TextField)tw.getComponent(
                        ToolWindow.MW_FILENAME_TEXTFIELD);
                newFilename.setText(policyFile);
                tw.setVisible(true);

                // inform user of warnings
                if (tool.newWarning == true) {
                    tw.displayStatusDialog(null, PolicyTool.rb.getString
                        ("Errors.have.occurred.while.opening.the.policy.configuration.View.the.Warning.Log.for.more.information."));
                }

            } catch (Exception e) {
                // add blank policy listing
                list = new List(40, false);
                list.addActionListener(new PolicyListListener(tool, tw));
                tw.replacePolicyList(list);
                tool.setPolicyFileName(null);
                tool.modified = false;

                // display a null policy filename
                newFilename = (TextField)tw.getComponent(
                        ToolWindow.MW_FILENAME_TEXTFIELD);
                newFilename.setText("");
                tw.setVisible(true);

                // display the error
                MessageFormat form = new MessageFormat(PolicyTool.rb.getString
                    ("Could.not.open.policy.file.policyFile.e.toString."));
                Object[] source = {policyFile, e.toString()};
                tw.displayErrorDialog(null, form.format(source));
            }
            break;
        }
    }

    
Return a Menu list of names for a given permission
If inputPerm's TARGETS are null, then this means TARGETS are
not allowed to be entered (and the TextField is set to be
non-editable).
If TARGETS are valid but there are no standard ones
(user must enter them by hand) then the TARGETS array may be empty
(and of course non-null).
/**
     * Return a Menu list of names for a given permission
     *
     * If inputPerm's TARGETS are null, then this means TARGETS are
     * not allowed to be entered (and the TextField is set to be
     * non-editable).
     *
     * If TARGETS are valid but there are no standard ones
     * (user must enter them by hand) then the TARGETS array may be empty
     * (and of course non-null).
     */
    void setPermissionNames(Perm inputPerm, Choice names, TextField field) {
        names.removeAll();
        names.add(PERM_NAME);

        if (inputPerm == null) {
            // custom permission
            field.setEditable(true);
        } else if (inputPerm.TARGETS == null) {
            // standard permission with no targets
            field.setEditable(false);
        } else {
            // standard permission with standard targets
            field.setEditable(true);
            for (int i = 0; i < inputPerm.TARGETS.length; i++) {
                names.add(inputPerm.TARGETS[i]);
            }
        }
    }

    
Return a Menu list of actions for a given permission
If inputPerm's ACTIONS are null, then this means ACTIONS are
not allowed to be entered (and the TextField is set to be
non-editable).  This is typically true for BasicPermissions.
If ACTIONS are valid but there are no standard ones
(user must enter them by hand) then the ACTIONS array may be empty
(and of course non-null).
/**
     * Return a Menu list of actions for a given permission
     *
     * If inputPerm's ACTIONS are null, then this means ACTIONS are
     * not allowed to be entered (and the TextField is set to be
     * non-editable).  This is typically true for BasicPermissions.
     *
     * If ACTIONS are valid but there are no standard ones
     * (user must enter them by hand) then the ACTIONS array may be empty
     * (and of course non-null).
     */
    void setPermissionActions(Perm inputPerm, Choice actions, TextField field) {
        actions.removeAll();
        actions.add(PERM_ACTIONS);

        if (inputPerm == null) {
            // custom permission
            field.setEditable(true);
        } else if (inputPerm.ACTIONS == null) {
            // standard permission with no actions
            field.setEditable(false);
        } else {
            // standard permission with standard actions
            field.setEditable(true);
            for (int i = 0; i < inputPerm.ACTIONS.length; i++) {
                actions.add(inputPerm.ACTIONS[i]);
            }
        }
    }

    static String PermissionEntryToUserFriendlyString(PolicyParser.PermissionEntry pppe) {
        String result = pppe.permission;
        if (pppe.name != null) {
            result += " " + pppe.name;
        }
        if (pppe.action != null) {
            result += ", \"" + pppe.action + "\"";
        }
        if (pppe.signedBy != null) {
            result += ", signedBy " + pppe.signedBy;
        }
        return result;
    }

    static String PrincipalEntryToUserFriendlyString(PolicyParser.PrincipalEntry pppe) {
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        pppe.write(pw);
        return sw.toString();
    }
}

Event handler for the PolicyTool window
/**
 * Event handler for the PolicyTool window
 */
class ToolWindowListener implements WindowListener {

    private ToolWindow tw;

    ToolWindowListener(ToolWindow tw) {
        this.tw = tw;
    }

    public void windowOpened(WindowEvent we) {
    }

    public void windowClosing(WindowEvent we) {

        // XXX
        // should we ask user if they want to save changes?
        // (we do if they choose the Menu->Exit)
        // seems that if they kill the application by hand,
        // we don't have to ask.

        tw.setVisible(false);
        tw.dispose();
        System.exit(0);
    }

    public void windowClosed(WindowEvent we) {
        System.exit(0);
    }

    public void windowIconified(WindowEvent we) {
    }

    public void windowDeiconified(WindowEvent we) {
    }

    public void windowActivated(WindowEvent we) {
    }

    public void windowDeactivated(WindowEvent we) {
    }
}

Event handler for the Policy List
/**
 * Event handler for the Policy List
 */
class PolicyListListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;

    PolicyListListener(PolicyTool tool, ToolWindow tw) {
        this.tool = tool;
        this.tw = tw;

    }

    public void actionPerformed(ActionEvent e) {

        // display the permission list for a policy entry
        ToolDialog td = new ToolDialog
                (PolicyTool.rb.getString("Policy.Entry"), tool, tw, true);
        td.displayPolicyEntryDialog(true);
    }
}

Event handler for the File Menu
/**
 * Event handler for the File Menu
 */
class FileMenuListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;

    FileMenuListener(PolicyTool tool, ToolWindow tw) {
        this.tool = tool;
        this.tw = tw;
    }

    public void actionPerformed(ActionEvent e) {

        if (PolicyTool.collator.compare(e.getActionCommand(),
                                       ToolWindow.QUIT) == 0) {

            // ask user if they want to save changes
            ToolDialog td = new ToolDialog
                (PolicyTool.rb.getString("Save.Changes"), tool, tw, true);
            td.displayUserSave(ToolDialog.QUIT);

            // the above method will perform the QUIT as long as the
            // user does not CANCEL the request

        } else if (PolicyTool.collator.compare(e.getActionCommand(),
                                   ToolWindow.NEW_POLICY_FILE) == 0) {

            // ask user if they want to save changes
            ToolDialog td = new ToolDialog
                (PolicyTool.rb.getString("Save.Changes"), tool, tw, true);
            td.displayUserSave(ToolDialog.NEW);

            // the above method will perform the NEW as long as the
            // user does not CANCEL the request

        } else if (PolicyTool.collator.compare(e.getActionCommand(),
                                  ToolWindow.OPEN_POLICY_FILE) == 0) {

            // ask user if they want to save changes
            ToolDialog td = new ToolDialog
                (PolicyTool.rb.getString("Save.Changes"), tool, tw, true);
            td.displayUserSave(ToolDialog.OPEN);

            // the above method will perform the OPEN as long as the
            // user does not CANCEL the request

        } else if (PolicyTool.collator.compare(e.getActionCommand(),
                                  ToolWindow.SAVE_POLICY_FILE) == 0) {

            // get the previously entered filename
            String filename = ((TextField)tw.getComponent(
                    ToolWindow.MW_FILENAME_TEXTFIELD)).getText();

            // if there is no filename, do a SAVE_AS
            if (filename == null || filename.length() == 0) {
                // user wants to SAVE AS
                ToolDialog td = new ToolDialog
                        (PolicyTool.rb.getString("Save.As"), tool, tw, true);
                td.displaySaveAsDialog(ToolDialog.NOACTION);
            } else {
                try {
                    // save the policy entries to a file
                    tool.savePolicy(filename);

                    // display status
                    MessageFormat form = new MessageFormat
                        (PolicyTool.rb.getString
                        ("Policy.successfully.written.to.filename"));
                    Object[] source = {filename};
                    tw.displayStatusDialog(null, form.format(source));
                } catch (FileNotFoundException fnfe) {
                    if (filename == null || filename.equals("")) {
                        tw.displayErrorDialog(null, new FileNotFoundException
                                (PolicyTool.rb.getString("null.filename")));
                    } else {
                        tw.displayErrorDialog(null, fnfe);
                    }
                } catch (Exception ee) {
                    tw.displayErrorDialog(null, ee);
                }
            }
        } else if (PolicyTool.collator.compare(e.getActionCommand(),
                               ToolWindow.SAVE_AS_POLICY_FILE) == 0) {

            // user wants to SAVE AS
            ToolDialog td = new ToolDialog
                (PolicyTool.rb.getString("Save.As"), tool, tw, true);
            td.displaySaveAsDialog(ToolDialog.NOACTION);

        } else if (PolicyTool.collator.compare(e.getActionCommand(),
                                     ToolWindow.VIEW_WARNINGS) == 0) {
            tw.displayWarningLog(null);
        }
    }
}

Event handler for the main window buttons and Edit Menu
/**
 * Event handler for the main window buttons and Edit Menu
 */
class MainWindowListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;

    MainWindowListener(PolicyTool tool, ToolWindow tw) {
        this.tool = tool;
        this.tw = tw;
    }

    public void actionPerformed(ActionEvent e) {

        if (PolicyTool.collator.compare(e.getActionCommand(),
                           ToolWindow.ADD_POLICY_ENTRY) == 0) {

            // display a dialog box for the user to enter policy info
            ToolDialog td = new ToolDialog
                (PolicyTool.rb.getString("Policy.Entry"), tool, tw, true);
            td.displayPolicyEntryDialog(false);

        } else if (PolicyTool.collator.compare(e.getActionCommand(),
                               ToolWindow.REMOVE_POLICY_ENTRY) == 0) {

            // get the selected entry
            List list = (List)tw.getComponent(ToolWindow.MW_POLICY_LIST);
            int index = list.getSelectedIndex();
            if (index < 0) {
                tw.displayErrorDialog(null, new Exception
                        (PolicyTool.rb.getString("No.Policy.Entry.selected")));
                return;
            }

            // ask the user if they really want to remove the policy entry
            ToolDialog td = new ToolDialog(PolicyTool.rb.getString
                ("Remove.Policy.Entry"), tool, tw, true);
            td.displayConfirmRemovePolicyEntry();

        } else if (PolicyTool.collator.compare(e.getActionCommand(),
                                 ToolWindow.EDIT_POLICY_ENTRY) == 0) {

            // get the selected entry
            List list = (List)tw.getComponent(ToolWindow.MW_POLICY_LIST);
            int index = list.getSelectedIndex();
            if (index < 0) {
                tw.displayErrorDialog(null, new Exception
                        (PolicyTool.rb.getString("No.Policy.Entry.selected")));
                return;
            }

            // display the permission list for a policy entry
            ToolDialog td = new ToolDialog
                (PolicyTool.rb.getString("Policy.Entry"), tool, tw, true);
            td.displayPolicyEntryDialog(true);

        } else if (PolicyTool.collator.compare(e.getActionCommand(),
                                     ToolWindow.EDIT_KEYSTORE) == 0) {

            // display a dialog box for the user to enter keystore info
            ToolDialog td = new ToolDialog
                (PolicyTool.rb.getString("KeyStore"), tool, tw, true);
            td.keyStoreDialog(ToolDialog.EDIT_KEYSTORE);
        }
    }
}

Event handler for AddEntryDoneButton button
-- if edit is TRUE, then we are EDITing an existing PolicyEntry
   and we need to update both the policy and the GUI listing.
   if edit is FALSE, then we are ADDing a new PolicyEntry,
   so we only need to update the GUI listing.
/**
 * Event handler for AddEntryDoneButton button
 *
 * -- if edit is TRUE, then we are EDITing an existing PolicyEntry
 *    and we need to update both the policy and the GUI listing.
 *    if edit is FALSE, then we are ADDing a new PolicyEntry,
 *    so we only need to update the GUI listing.
 */
class AddEntryDoneButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog td;
    private boolean edit;

    AddEntryDoneButtonListener(PolicyTool tool, ToolWindow tw,
                                ToolDialog td, boolean edit) {
        this.tool = tool;
        this.tw = tw;
        this.td = td;
        this.edit = edit;
    }

    public void actionPerformed(ActionEvent e) {

        try {
            // get a PolicyEntry object from the dialog policy info
            PolicyEntry newEntry = td.getPolicyEntryFromDialog();
            PolicyParser.GrantEntry newGe = newEntry.getGrantEntry();

            // see if all the signers have public keys
            if (newGe.signedBy != null) {
                String signers[] = tool.parseSigners(newGe.signedBy);
                for (int i = 0; i < signers.length; i++) {
                    PublicKey pubKey = tool.getPublicKeyAlias(signers[i]);
                    if (pubKey == null) {
                        MessageFormat form = new MessageFormat
                            (PolicyTool.rb.getString
                            ("Warning.A.public.key.for.alias.signers.i.does.not.exist.Make.sure.a.KeyStore.is.properly.configured."));
                        Object[] source = {signers[i]};
                        tool.warnings.addElement(form.format(source));
                        tw.displayStatusDialog(td, form.format(source));
                    }
                }
            }

            // add the entry
            List policyList = (List)tw.getComponent(ToolWindow.MW_POLICY_LIST);
            if (edit) {
                int listIndex = policyList.getSelectedIndex();
                tool.addEntry(newEntry, listIndex);
                String newCodeBaseStr = newEntry.headerToString();
                if (PolicyTool.collator.compare
                        (newCodeBaseStr, policyList.getItem(listIndex)) != 0)
                    tool.modified = true;
                policyList.replaceItem(newCodeBaseStr, listIndex);
            } else {
                tool.addEntry(newEntry, -1);
                policyList.add(newEntry.headerToString());
                tool.modified = true;
            }
            td.setVisible(false);
            td.dispose();

        } catch (Exception eee) {
            tw.displayErrorDialog(td, eee);
        }
    }
}

Event handler for ChangeKeyStoreOKButton button
/**
 * Event handler for ChangeKeyStoreOKButton button
 */
class ChangeKeyStoreOKButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog td;

    ChangeKeyStoreOKButtonListener(PolicyTool tool, ToolWindow tw,
                ToolDialog td) {
        this.tool = tool;
        this.tw = tw;
        this.td = td;
    }

    public void actionPerformed(ActionEvent e) {

        String URLString = ((TextField)td.getComponent(
                ToolDialog.KSD_NAME_TEXTFIELD)).getText().trim();
        String type = ((TextField)td.getComponent(
                ToolDialog.KSD_TYPE_TEXTFIELD)).getText().trim();
        String provider = ((TextField)td.getComponent(
                ToolDialog.KSD_PROVIDER_TEXTFIELD)).getText().trim();
        String pwdURL = ((TextField)td.getComponent(
                ToolDialog.KSD_PWD_URL_TEXTFIELD)).getText().trim();

        try {
            tool.openKeyStore
                        ((URLString.length() == 0 ? null : URLString),
                        (type.length() == 0 ? null : type),
                        (provider.length() == 0 ? null : provider),
                        (pwdURL.length() == 0 ? null : pwdURL));
            tool.modified = true;
        } catch (Exception ex) {
            MessageFormat form = new MessageFormat(PolicyTool.rb.getString
                ("Unable.to.open.KeyStore.ex.toString."));
            Object[] source = {ex.toString()};
            tw.displayErrorDialog(td, form.format(source));
            return;
        }

        td.dispose();
    }
}

Event handler for AddPrinButton button
/**
 * Event handler for AddPrinButton button
 */
class AddPrinButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog td;
    private boolean editPolicyEntry;

    AddPrinButtonListener(PolicyTool tool, ToolWindow tw,
                                ToolDialog td, boolean editPolicyEntry) {
        this.tool = tool;
        this.tw = tw;
        this.td = td;
        this.editPolicyEntry = editPolicyEntry;
    }

    public void actionPerformed(ActionEvent e) {

        // display a dialog box for the user to enter principal info
        td.displayPrincipalDialog(editPolicyEntry, false);
    }
}

Event handler for AddPermButton button
/**
 * Event handler for AddPermButton button
 */
class AddPermButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog td;
    private boolean editPolicyEntry;

    AddPermButtonListener(PolicyTool tool, ToolWindow tw,
                                ToolDialog td, boolean editPolicyEntry) {
        this.tool = tool;
        this.tw = tw;
        this.td = td;
        this.editPolicyEntry = editPolicyEntry;
    }

    public void actionPerformed(ActionEvent e) {

        // display a dialog box for the user to enter permission info
        td.displayPermissionDialog(editPolicyEntry, false);
    }
}

Event handler for AddPrinOKButton button
/**
 * Event handler for AddPrinOKButton button
 */
class NewPolicyPrinOKButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog listDialog;
    private ToolDialog infoDialog;
    private boolean edit;

    NewPolicyPrinOKButtonListener(PolicyTool tool,
                                ToolWindow tw,
                                ToolDialog listDialog,
                                ToolDialog infoDialog,
                                boolean edit) {
        this.tool = tool;
        this.tw = tw;
        this.listDialog = listDialog;
        this.infoDialog = infoDialog;
        this.edit = edit;
    }

    public void actionPerformed(ActionEvent e) {

        try {
            // read in the new principal info from Dialog Box
            PolicyParser.PrincipalEntry pppe =
                        infoDialog.getPrinFromDialog();
            if (pppe != null) {
                try {
                    tool.verifyPrincipal(pppe.getPrincipalClass(),
                                        pppe.getPrincipalName());
                } catch (ClassNotFoundException cnfe) {
                    MessageFormat form = new MessageFormat
                                (PolicyTool.rb.getString
                                ("Warning.Class.not.found.class"));
                    Object[] source = {pppe.getPrincipalClass()};
                    tool.warnings.addElement(form.format(source));
                    tw.displayStatusDialog(infoDialog, form.format(source));
                }

                // add the principal to the GUI principal list
                TaggedList prinList =
                    (TaggedList)listDialog.getComponent(ToolDialog.PE_PRIN_LIST);

                String prinString = ToolDialog.PrincipalEntryToUserFriendlyString(pppe);
                if (edit) {
                    // if editing, replace the original principal
                    int index = prinList.getSelectedIndex();
                    prinList.replaceTaggedItem(prinString, pppe, index);
                } else {
                    // if adding, just add it to the end
                    prinList.addTaggedItem(prinString, pppe);
                }
            }
            infoDialog.dispose();
        } catch (Exception ee) {
            tw.displayErrorDialog(infoDialog, ee);
        }
    }
}

Event handler for AddPermOKButton button
/**
 * Event handler for AddPermOKButton button
 */
class NewPolicyPermOKButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog listDialog;
    private ToolDialog infoDialog;
    private boolean edit;

    NewPolicyPermOKButtonListener(PolicyTool tool,
                                ToolWindow tw,
                                ToolDialog listDialog,
                                ToolDialog infoDialog,
                                boolean edit) {
        this.tool = tool;
        this.tw = tw;
        this.listDialog = listDialog;
        this.infoDialog = infoDialog;
        this.edit = edit;
    }

    public void actionPerformed(ActionEvent e) {

        try {
            // read in the new permission info from Dialog Box
            PolicyParser.PermissionEntry pppe =
                        infoDialog.getPermFromDialog();

            try {
                tool.verifyPermission(pppe.permission, pppe.name, pppe.action);
            } catch (ClassNotFoundException cnfe) {
                MessageFormat form = new MessageFormat(PolicyTool.rb.getString
                                ("Warning.Class.not.found.class"));
                Object[] source = {pppe.permission};
                tool.warnings.addElement(form.format(source));
                tw.displayStatusDialog(infoDialog, form.format(source));
            }

            // add the permission to the GUI permission list
            TaggedList permList =
                (TaggedList)listDialog.getComponent(ToolDialog.PE_PERM_LIST);

            String permString = ToolDialog.PermissionEntryToUserFriendlyString(pppe);
            if (edit) {
                // if editing, replace the original permission
                int which = permList.getSelectedIndex();
                permList.replaceTaggedItem(permString, pppe, which);
            } else {
                // if adding, just add it to the end
                permList.addTaggedItem(permString, pppe);
            }
            infoDialog.dispose();

        } catch (InvocationTargetException ite) {
            tw.displayErrorDialog(infoDialog, ite.getTargetException());
        } catch (Exception ee) {
            tw.displayErrorDialog(infoDialog, ee);
        }
    }
}

Event handler for RemovePrinButton button
/**
 * Event handler for RemovePrinButton button
 */
class RemovePrinButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog td;
    private boolean edit;

    RemovePrinButtonListener(PolicyTool tool, ToolWindow tw,
                                ToolDialog td, boolean edit) {
        this.tool = tool;
        this.tw = tw;
        this.td = td;
        this.edit = edit;
    }

    public void actionPerformed(ActionEvent e) {

        // get the Principal selected from the Principal List
        TaggedList prinList = (TaggedList)td.getComponent(
                ToolDialog.PE_PRIN_LIST);
        int prinIndex = prinList.getSelectedIndex();

        if (prinIndex < 0) {
            tw.displayErrorDialog(td, new Exception
                (PolicyTool.rb.getString("No.principal.selected")));
            return;
        }
        // remove the principal from the display
        prinList.removeTaggedItem(prinIndex);
    }
}

Event handler for RemovePermButton button
/**
 * Event handler for RemovePermButton button
 */
class RemovePermButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog td;
    private boolean edit;

    RemovePermButtonListener(PolicyTool tool, ToolWindow tw,
                                ToolDialog td, boolean edit) {
        this.tool = tool;
        this.tw = tw;
        this.td = td;
        this.edit = edit;
    }

    public void actionPerformed(ActionEvent e) {

        // get the Permission selected from the Permission List
        TaggedList permList = (TaggedList)td.getComponent(
                ToolDialog.PE_PERM_LIST);
        int permIndex = permList.getSelectedIndex();

        if (permIndex < 0) {
            tw.displayErrorDialog(td, new Exception
                (PolicyTool.rb.getString("No.permission.selected")));
            return;
        }
        // remove the permission from the display
        permList.removeTaggedItem(permIndex);

    }
}

Event handler for Edit Principal button
We need the editPolicyEntry boolean to tell us if the user is
adding a new PolicyEntry at this time, or editing an existing entry.
If the user is adding a new PolicyEntry, we ONLY update the
GUI listing.  If the user is editing an existing PolicyEntry, we
update both the GUI listing and the actual PolicyEntry.
/**
 * Event handler for Edit Principal button
 *
 * We need the editPolicyEntry boolean to tell us if the user is
 * adding a new PolicyEntry at this time, or editing an existing entry.
 * If the user is adding a new PolicyEntry, we ONLY update the
 * GUI listing.  If the user is editing an existing PolicyEntry, we
 * update both the GUI listing and the actual PolicyEntry.
 */
class EditPrinButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog td;
    private boolean editPolicyEntry;

    EditPrinButtonListener(PolicyTool tool, ToolWindow tw,
                                ToolDialog td, boolean editPolicyEntry) {
        this.tool = tool;
        this.tw = tw;
        this.td = td;
        this.editPolicyEntry = editPolicyEntry;
    }

    public void actionPerformed(ActionEvent e) {

        // get the Principal selected from the Principal List
        TaggedList list = (TaggedList)td.getComponent(
                ToolDialog.PE_PRIN_LIST);
        int prinIndex = list.getSelectedIndex();

        if (prinIndex < 0) {
            tw.displayErrorDialog(td, new Exception
                (PolicyTool.rb.getString("No.principal.selected")));
            return;
        }
        td.displayPrincipalDialog(editPolicyEntry, true);
    }
}

Event handler for Edit Permission button
We need the editPolicyEntry boolean to tell us if the user is
adding a new PolicyEntry at this time, or editing an existing entry.
If the user is adding a new PolicyEntry, we ONLY update the
GUI listing.  If the user is editing an existing PolicyEntry, we
update both the GUI listing and the actual PolicyEntry.
/**
 * Event handler for Edit Permission button
 *
 * We need the editPolicyEntry boolean to tell us if the user is
 * adding a new PolicyEntry at this time, or editing an existing entry.
 * If the user is adding a new PolicyEntry, we ONLY update the
 * GUI listing.  If the user is editing an existing PolicyEntry, we
 * update both the GUI listing and the actual PolicyEntry.
 */
class EditPermButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog td;
    private boolean editPolicyEntry;

    EditPermButtonListener(PolicyTool tool, ToolWindow tw,
                                ToolDialog td, boolean editPolicyEntry) {
        this.tool = tool;
        this.tw = tw;
        this.td = td;
        this.editPolicyEntry = editPolicyEntry;
    }

    public void actionPerformed(ActionEvent e) {

        // get the Permission selected from the Permission List
        List list = (List)td.getComponent(ToolDialog.PE_PERM_LIST);
        int permIndex = list.getSelectedIndex();

        if (permIndex < 0) {
            tw.displayErrorDialog(td, new Exception
                (PolicyTool.rb.getString("No.permission.selected")));
            return;
        }
        td.displayPermissionDialog(editPolicyEntry, true);
    }
}

Event handler for Principal Popup Menu
/**
 * Event handler for Principal Popup Menu
 */
class PrincipalTypeMenuListener implements ItemListener {

    private ToolDialog td;

    PrincipalTypeMenuListener(ToolDialog td) {
        this.td = td;
    }

    public void itemStateChanged(ItemEvent e) {

        Choice prin = (Choice)td.getComponent(ToolDialog.PRD_PRIN_CHOICE);
        TextField prinField = (TextField)td.getComponent(
                ToolDialog.PRD_PRIN_TEXTFIELD);
        TextField nameField = (TextField)td.getComponent(
                ToolDialog.PRD_NAME_TEXTFIELD);

        prin.getAccessibleContext().setAccessibleName(
            PolicyTool.splitToWords((String)e.getItem()));
        if (((String)e.getItem()).equals(ToolDialog.PRIN_TYPE)) {
            // ignore if they choose "Principal Type:" item
            if (prinField.getText() != null &&
                prinField.getText().length() > 0) {
                Prin inputPrin = ToolDialog.getPrin(prinField.getText(), true);
                prin.select(inputPrin.CLASS);
            }
            return;
        }

        // if you change the principal, clear the name
        if (prinField.getText().indexOf((String)e.getItem()) == -1) {
            nameField.setText("");
        }

        // set the text in the textfield and also modify the
        // pull-down choice menus to reflect the correct possible
        // set of names and actions
        Prin inputPrin = ToolDialog.getPrin((String)e.getItem(), false);
        if (inputPrin != null) {
            prinField.setText(inputPrin.FULL_CLASS);
        }
    }
}

Event handler for Permission Popup Menu
/**
 * Event handler for Permission Popup Menu
 */
class PermissionMenuListener implements ItemListener {

    private ToolDialog td;

    PermissionMenuListener(ToolDialog td) {
        this.td = td;
    }

    public void itemStateChanged(ItemEvent e) {

        Choice perms = (Choice)td.getComponent(
                ToolDialog.PD_PERM_CHOICE);
        Choice names = (Choice)td.getComponent(
                ToolDialog.PD_NAME_CHOICE);
        Choice actions = (Choice)td.getComponent(
                ToolDialog.PD_ACTIONS_CHOICE);
        TextField nameField = (TextField)td.getComponent(
                ToolDialog.PD_NAME_TEXTFIELD);
        TextField actionsField = (TextField)td.getComponent(
                ToolDialog.PD_ACTIONS_TEXTFIELD);
        TextField permField = (TextField)td.getComponent(
                ToolDialog.PD_PERM_TEXTFIELD);
        TextField signedbyField = (TextField)td.getComponent(
                ToolDialog.PD_SIGNEDBY_TEXTFIELD);

        perms.getAccessibleContext().setAccessibleName(
            PolicyTool.splitToWords((String)e.getItem()));

        // ignore if they choose the 'Permission:' item
        if (PolicyTool.collator.compare((String)e.getItem(),
                                      ToolDialog.PERM) == 0) {
            if (permField.getText() != null &&
                permField.getText().length() > 0) {

                Perm inputPerm = ToolDialog.getPerm(permField.getText(), true);
                if (inputPerm != null) {
                    perms.select(inputPerm.CLASS);
                }
            }
            return;
        }

        // if you change the permission, clear the name, actions, and signedBy
        if (permField.getText().indexOf((String)e.getItem()) == -1) {
            nameField.setText("");
            actionsField.setText("");
            signedbyField.setText("");
        }

        // set the text in the textfield and also modify the
        // pull-down choice menus to reflect the correct possible
        // set of names and actions

        Perm inputPerm = ToolDialog.getPerm((String)e.getItem(), false);
        if (inputPerm == null) {
            permField.setText("");
        } else {
            permField.setText(inputPerm.FULL_CLASS);
        }
        td.setPermissionNames(inputPerm, names, nameField);
        td.setPermissionActions(inputPerm, actions, actionsField);
    }
}

Event handler for Permission Name Popup Menu
/**
 * Event handler for Permission Name Popup Menu
 */
class PermissionNameMenuListener implements ItemListener {

    private ToolDialog td;

    PermissionNameMenuListener(ToolDialog td) {
        this.td = td;
    }

    public void itemStateChanged(ItemEvent e) {

        Choice names = (Choice)td.getComponent(ToolDialog.PD_NAME_CHOICE);
        names.getAccessibleContext().setAccessibleName(
            PolicyTool.splitToWords((String)e.getItem()));

        if (((String)e.getItem()).indexOf(ToolDialog.PERM_NAME) != -1)
            return;

        TextField tf = (TextField)td.getComponent(ToolDialog.PD_NAME_TEXTFIELD);
        tf.setText((String)e.getItem());
    }
}

Event handler for Permission Actions Popup Menu
/**
 * Event handler for Permission Actions Popup Menu
 */
class PermissionActionsMenuListener implements ItemListener {

    private ToolDialog td;

    PermissionActionsMenuListener(ToolDialog td) {
        this.td = td;
    }

    public void itemStateChanged(ItemEvent e) {

        Choice actions = (Choice)td.getComponent(
                ToolDialog.PD_ACTIONS_CHOICE);
        actions.getAccessibleContext().setAccessibleName((String)e.getItem());

        if (((String)e.getItem()).indexOf(ToolDialog.PERM_ACTIONS) != -1)
            return;

        TextField tf = (TextField)td.getComponent(
                ToolDialog.PD_ACTIONS_TEXTFIELD);
        if (tf.getText() == null || tf.getText().equals("")) {
            tf.setText((String)e.getItem());
        } else {
            if (tf.getText().indexOf((String)e.getItem()) == -1)
                tf.setText(tf.getText() + ", " + (String)e.getItem());
        }
    }
}

Event handler for all the children dialogs/windows
/**
 * Event handler for all the children dialogs/windows
 */
class ChildWindowListener implements WindowListener {

    private ToolDialog td;

    ChildWindowListener(ToolDialog td) {
        this.td = td;
    }

    public void windowOpened(WindowEvent we) {
    }

    public void windowClosing(WindowEvent we) {
        // same as pressing the "cancel" button
        td.setVisible(false);
        td.dispose();
    }

    public void windowClosed(WindowEvent we) {
    }

    public void windowIconified(WindowEvent we) {
    }

    public void windowDeiconified(WindowEvent we) {
    }

    public void windowActivated(WindowEvent we) {
    }

    public void windowDeactivated(WindowEvent we) {
    }
}

Event handler for CancelButton button
/**
 * Event handler for CancelButton button
 */
class CancelButtonListener implements ActionListener {

    private ToolDialog td;

    CancelButtonListener(ToolDialog td) {
        this.td = td;
    }

    public void actionPerformed(ActionEvent e) {
        td.setVisible(false);
        td.dispose();
    }
}

Event handler for ErrorOKButton button
/**
 * Event handler for ErrorOKButton button
 */
class ErrorOKButtonListener implements ActionListener {

    private ToolDialog ed;

    ErrorOKButtonListener(ToolDialog ed) {
        this.ed = ed;
    }

    public void actionPerformed(ActionEvent e) {
        ed.setVisible(false);
        ed.dispose();
    }
}

Event handler for StatusOKButton button
/**
 * Event handler for StatusOKButton button
 */
class StatusOKButtonListener implements ActionListener {

    private ToolDialog sd;

    StatusOKButtonListener(ToolDialog sd) {
        this.sd = sd;
    }

    public void actionPerformed(ActionEvent e) {
        sd.setVisible(false);
        sd.dispose();
    }
}

Event handler for UserSaveYes button
/**
 * Event handler for UserSaveYes button
 */
class UserSaveYesButtonListener implements ActionListener {

    private ToolDialog us;
    private PolicyTool tool;
    private ToolWindow tw;
    private int select;

    UserSaveYesButtonListener(ToolDialog us, PolicyTool tool,
                        ToolWindow tw, int select) {
        this.us = us;
        this.tool = tool;
        this.tw = tw;
        this.select = select;
    }

    public void actionPerformed(ActionEvent e) {

        // first get rid of the window
        us.setVisible(false);
        us.dispose();

        try {
            String filename = ((TextField)tw.getComponent(
                    ToolWindow.MW_FILENAME_TEXTFIELD)).getText();
            if (filename == null || filename.equals("")) {
                us.displaySaveAsDialog(select);

                // the above dialog will continue with the originally
                // requested command if necessary
            } else {
                // save the policy entries to a file
                tool.savePolicy(filename);

                // display status
                MessageFormat form = new MessageFormat
                        (PolicyTool.rb.getString
                        ("Policy.successfully.written.to.filename"));
                Object[] source = {filename};
                tw.displayStatusDialog(null, form.format(source));

                // now continue with the originally requested command
                // (QUIT, NEW, or OPEN)
                us.userSaveContinue(tool, tw, us, select);
            }
        } catch (Exception ee) {
            // error -- just report it and bail
            tw.displayErrorDialog(null, ee);
        }
    }
}

Event handler for UserSaveNoButton
/**
 * Event handler for UserSaveNoButton
 */
class UserSaveNoButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog us;
    private int select;

    UserSaveNoButtonListener(ToolDialog us, PolicyTool tool,
                        ToolWindow tw, int select) {
        this.us = us;
        this.tool = tool;
        this.tw = tw;
        this.select = select;
    }

    public void actionPerformed(ActionEvent e) {
        us.setVisible(false);
        us.dispose();

        // now continue with the originally requested command
        // (QUIT, NEW, or OPEN)
        us.userSaveContinue(tool, tw, us, select);
    }
}

Event handler for UserSaveCancelButton
/**
 * Event handler for UserSaveCancelButton
 */
class UserSaveCancelButtonListener implements ActionListener {

    private ToolDialog us;

    UserSaveCancelButtonListener(ToolDialog us) {
        this.us = us;
    }

    public void actionPerformed(ActionEvent e) {
        us.setVisible(false);
        us.dispose();

        // do NOT continue with the originally requested command
        // (QUIT, NEW, or OPEN)
    }
}

Event handler for ConfirmRemovePolicyEntryOKButtonListener
/**
 * Event handler for ConfirmRemovePolicyEntryOKButtonListener
 */
class ConfirmRemovePolicyEntryOKButtonListener implements ActionListener {

    private PolicyTool tool;
    private ToolWindow tw;
    private ToolDialog us;

    ConfirmRemovePolicyEntryOKButtonListener(PolicyTool tool,
                                ToolWindow tw, ToolDialog us) {
        this.tool = tool;
        this.tw = tw;
        this.us = us;
    }

    public void actionPerformed(ActionEvent e) {
        // remove the entry
        List list = (List)tw.getComponent(ToolWindow.MW_POLICY_LIST);
        int index = list.getSelectedIndex();
        PolicyEntry entries[] = tool.getEntry();
        tool.removeEntry(entries[index]);

        // redraw the window listing
        list = new List(40, false);
        list.addActionListener(new PolicyListListener(tool, tw));
        entries = tool.getEntry();
        if (entries != null) {
                for (int i = 0; i < entries.length; i++)
                    list.add(entries[i].headerToString());
        }
        tw.replacePolicyList(list);
        us.setVisible(false);
        us.dispose();
    }
}

Just a special name, so that the codes dealing with this exception knows
it's special, and does not pop out a warning box.
/**
 * Just a special name, so that the codes dealing with this exception knows
 * it's special, and does not pop out a warning box.
 */
class NoDisplayException extends RuntimeException {
    private static final long serialVersionUID = -4611761427108719794L;
}

This is a java.awt.List that bind an Object to each String it holds.
/**
 * This is a java.awt.List that bind an Object to each String it holds.
 */
class TaggedList extends List {
    private static final long serialVersionUID = -5676238110427785853L;

    private java.util.List<Object> data = new LinkedList<>();
    public TaggedList(int i, boolean b) {
        super(i, b);
    }

    public Object getObject(int index) {
        return data.get(index);
    }

    @Override @Deprecated public void add(String string) {
        throw new AssertionError("should not call add in TaggedList");
    }
    public void addTaggedItem(String string, Object object) {
        super.add(string);
        data.add(object);
    }

    @Override @Deprecated public void replaceItem(String string, int index) {
        throw new AssertionError("should not call replaceItem in TaggedList");
    }
    public void replaceTaggedItem(String string, Object object, int index) {
        super.replaceItem(string, index);
        data.set(index, object);
    }

    @Override @Deprecated public void remove(int index) {
        // Cannot throw AssertionError, because replaceItem() call remove() internally
        super.remove(index);
    }
    public void removeTaggedItem(int index) {
        super.remove(index);
        data.remove(index);
    }
}

Convenience Principal Classes
/**
 * Convenience Principal Classes
 */

class Prin {
    public final String CLASS;
    public final String FULL_CLASS;

    public Prin(String clazz, String fullClass) {
        this.CLASS = clazz;
        this.FULL_CLASS = fullClass;
    }
}

class KrbPrin extends Prin {
    public KrbPrin() {
        super("KerberosPrincipal",
                "javax.security.auth.kerberos.KerberosPrincipal");
    }
}

class X500Prin extends Prin {
    public X500Prin() {
        super("X500Principal",
                "javax.security.auth.x500.X500Principal");
    }
}

Convenience Permission Classes
/**
 * Convenience Permission Classes
 */

class Perm {
    public final String CLASS;
    public final String FULL_CLASS;
    public final String[] TARGETS;
    public final String[] ACTIONS;

    public Perm(String clazz, String fullClass,
                String[] targets, String[] actions) {

        this.CLASS = clazz;
        this.FULL_CLASS = fullClass;
        this.TARGETS = targets;
        this.ACTIONS = actions;
    }
}

class AllPerm extends Perm {
    public AllPerm() {
        super("AllPermission", "java.security.AllPermission", null, null);
    }
}

class AudioPerm extends Perm {
    public AudioPerm() {
        super("AudioPermission",
        "javax.sound.sampled.AudioPermission",
        new String[]    {
                "play",
                "record"
                },
        null);
    }
}

class AuthPerm extends Perm {
    public AuthPerm() {
    super("AuthPermission",
        "javax.security.auth.AuthPermission",
        new String[]    {
                "doAs",
                "doAsPrivileged",
                "getSubject",
                "getSubjectFromDomainCombiner",
                "setReadOnly",
                "modifyPrincipals",
                "modifyPublicCredentials",
                "modifyPrivateCredentials",
                "refreshCredential",
                "destroyCredential",
                "createLoginContext.<" + PolicyTool.rb.getString("name") + ">",
                "getLoginConfiguration",
                "setLoginConfiguration",
                "createLoginConfiguration.<" +
                        PolicyTool.rb.getString("configuration.type") + ">",
                "refreshLoginConfiguration"
                },
        null);
    }
}

class AWTPerm extends Perm {
    public AWTPerm() {
    super("AWTPermission",
        "java.awt.AWTPermission",
        new String[]    {
                "accessClipboard",
                "accessEventQueue",
                "accessSystemTray",
                "createRobot",
                "fullScreenExclusive",
                "listenToAllAWTEvents",
                "readDisplayPixels",
                "replaceKeyboardFocusManager",
                "setAppletStub",
                "setWindowAlwaysOnTop",
                "showWindowWithoutWarningBanner",
                "toolkitModality",
                "watchMousePointer"
        },
        null);
    }
}

class DelegationPerm extends Perm {
    public DelegationPerm() {
    super("DelegationPermission",
        "javax.security.auth.kerberos.DelegationPermission",
        new String[]    {
                // allow user input
                },
        null);
    }
}

class FilePerm extends Perm {
    public FilePerm() {
    super("FilePermission",
        "java.io.FilePermission",
        new String[]    {
                "<<ALL FILES>>"
                },
        new String[]    {
                "read",
                "write",
                "delete",
                "execute"
                });
    }
}

class InqSecContextPerm extends Perm {
    public InqSecContextPerm() {
    super("InquireSecContextPermission",
        "com.sun.security.jgss.InquireSecContextPermission",
        new String[]    {
                "KRB5_GET_SESSION_KEY",
                "KRB5_GET_TKT_FLAGS",
                "KRB5_GET_AUTHZ_DATA",
                "KRB5_GET_AUTHTIME"
                },
        null);
    }
}

class LogPerm extends Perm {
    public LogPerm() {
    super("LoggingPermission",
        "java.util.logging.LoggingPermission",
        new String[]    {
                "control"
                },
        null);
    }
}

class MgmtPerm extends Perm {
    public MgmtPerm() {
    super("ManagementPermission",
        "java.lang.management.ManagementPermission",
        new String[]    {
                "control",
                "monitor"
                },
        null);
    }
}

class MBeanPerm extends Perm {
    public MBeanPerm() {
    super("MBeanPermission",
        "javax.management.MBeanPermission",
        new String[]    {
                // allow user input
                },
        new String[]    {
                "addNotificationListener",
                "getAttribute",
                "getClassLoader",
                "getClassLoaderFor",
                "getClassLoaderRepository",
                "getDomains",
                "getMBeanInfo",
                "getObjectInstance",
                "instantiate",
                "invoke",
                "isInstanceOf",
                "queryMBeans",
                "queryNames",
                "registerMBean",
                "removeNotificationListener",
                "setAttribute",
                "unregisterMBean"
                });
    }
}

class MBeanSvrPerm extends Perm {
    public MBeanSvrPerm() {
    super("MBeanServerPermission",
        "javax.management.MBeanServerPermission",
        new String[]    {
                "createMBeanServer",
                "findMBeanServer",
                "newMBeanServer",
                "releaseMBeanServer"
                },
        null);
    }
}

class MBeanTrustPerm extends Perm {
    public MBeanTrustPerm() {
    super("MBeanTrustPermission",
        "javax.management.MBeanTrustPermission",
        new String[]    {
                "register"
                },
        null);
    }
}

class NetPerm extends Perm {
    public NetPerm() {
    super("NetPermission",
        "java.net.NetPermission",
        new String[]    {
                "setDefaultAuthenticator",
                "requestPasswordAuthentication",
                "specifyStreamHandler",
                "setProxySelector",
                "getProxySelector",
                "setCookieHandler",
                "getCookieHandler",
                "setResponseCache",
                "getResponseCache"
                },
        null);
    }
}

class PrivCredPerm extends Perm {
    public PrivCredPerm() {
    super("PrivateCredentialPermission",
        "javax.security.auth.PrivateCredentialPermission",
        new String[]    {
                // allow user input
                },
        new String[]    {
                "read"
                });
    }
}

class PropPerm extends Perm {
    public PropPerm() {
    super("PropertyPermission",
        "java.util.PropertyPermission",
        new String[]    {
                // allow user input
                },
        new String[]    {
                "read",
                "write"
                });
    }
}

class ReflectPerm extends Perm {
    public ReflectPerm() {
    super("ReflectPermission",
        "java.lang.reflect.ReflectPermission",
        new String[]    {
                "suppressAccessChecks"
                },
        null);
    }
}

class RuntimePerm extends Perm {
    public RuntimePerm() {
    super("RuntimePermission",
        "java.lang.RuntimePermission",
        new String[]    {
                "createClassLoader",
                "getClassLoader",
                "setContextClassLoader",
                "enableContextClassLoaderOverride",
                "setSecurityManager",
                "createSecurityManager",
                "getenv.<" +
                    PolicyTool.rb.getString("environment.variable.name") + ">",
                "exitVM",
                "shutdownHooks",
                "setFactory",
                "setIO",
                "modifyThread",
                "stopThread",
                "modifyThreadGroup",
                "getProtectionDomain",
                "readFileDescriptor",
                "writeFileDescriptor",
                "loadLibrary.<" +
                    PolicyTool.rb.getString("library.name") + ">",
                "accessClassInPackage.<" +
                    PolicyTool.rb.getString("package.name")+">",
                "defineClassInPackage.<" +
                    PolicyTool.rb.getString("package.name")+">",
                "accessDeclaredMembers",
                "queuePrintJob",
                "getStackTrace",
                "setDefaultUncaughtExceptionHandler",
                "preferences",
                "usePolicy",
                // "inheritedChannel"
                },
        null);
    }
}

class SecurityPerm extends Perm {
    public SecurityPerm() {
    super("SecurityPermission",
        "java.security.SecurityPermission",
        new String[]    {
                "createAccessControlContext",
                "getDomainCombiner",
                "getPolicy",
                "setPolicy",
                "createPolicy.<" +
                    PolicyTool.rb.getString("policy.type") + ">",
                "getProperty.<" +
                    PolicyTool.rb.getString("property.name") + ">",
                "setProperty.<" +
                    PolicyTool.rb.getString("property.name") + ">",
                "insertProvider.<" +
                    PolicyTool.rb.getString("provider.name") + ">",
                "removeProvider.<" +
                    PolicyTool.rb.getString("provider.name") + ">",
                //"setSystemScope",
                //"setIdentityPublicKey",
                //"setIdentityInfo",
                //"addIdentityCertificate",
                //"removeIdentityCertificate",
                //"printIdentity",
                "clearProviderProperties.<" +
                    PolicyTool.rb.getString("provider.name") + ">",
                "putProviderProperty.<" +
                    PolicyTool.rb.getString("provider.name") + ">",
                "removeProviderProperty.<" +
                    PolicyTool.rb.getString("provider.name") + ">",
                //"getSignerPrivateKey",
                //"setSignerKeyPair"
                },
        null);
    }
}

class SerialPerm extends Perm {
    public SerialPerm() {
    super("SerializablePermission",
        "java.io.SerializablePermission",
        new String[]    {
                "enableSubclassImplementation",
                "enableSubstitution"
                },
        null);
    }
}

class ServicePerm extends Perm {
    public ServicePerm() {
    super("ServicePermission",
        "javax.security.auth.kerberos.ServicePermission",
        new String[]    {
                // allow user input
                },
        new String[]    {
                "initiate",
                "accept"
                });
    }
}

class SocketPerm extends Perm {
    public SocketPerm() {
    super("SocketPermission",
        "java.net.SocketPermission",
        new String[]    {
                // allow user input
                },
        new String[]    {
                "accept",
                "connect",
                "listen",
                "resolve"
                });
    }
}

class SQLPerm extends Perm {
    public SQLPerm() {
    super("SQLPermission",
        "java.sql.SQLPermission",
        new String[]    {
                "setLog",
                "callAbort",
                "setSyncFactory",
                "setNetworkTimeout",
                },
        null);
    }
}

class SSLPerm extends Perm {
    public SSLPerm() {
    super("SSLPermission",
        "javax.net.ssl.SSLPermission",
        new String[]    {
                "setHostnameVerifier",
                "getSSLSessionContext"
                },
        null);
    }
}

class SubjDelegPerm extends Perm {
    public SubjDelegPerm() {
    super("SubjectDelegationPermission",
        "javax.management.remote.SubjectDelegationPermission",
        new String[]    {
                // allow user input
                },
        null);
    }
}