X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Forg%2Fxwt%2FXWT.java;h=811a64304345a427aba554d9853ba61416e06fb9;hb=0b0673bbc7f06c5d5418d5ab7ad5961a464e2de0;hp=c107098f40982dc10744cf6c75b7cd95adf978bb;hpb=b70b484f3b3829663a37fd91a03816e397d891b5;p=org.ibex.core.git

diff --git a/src/org/xwt/XWT.java b/src/org/xwt/XWT.java
index c107098..811a643 100644
--- a/src/org/xwt/XWT.java
+++ b/src/org/xwt/XWT.java
@@ -1,4 +1,4 @@
-// Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
+// Copyright 2003 Adam Megacz, see the COPYING file for licensing [GPL]
 package org.xwt;
 
 import java.io.*;
@@ -7,385 +7,229 @@ import java.text.*;
 import java.util.*;
 import org.xwt.js.*;
 import org.xwt.util.*;
+import org.xwt.translators.*;
 import org.bouncycastle.util.encoders.Base64;
 
 /** Singleton class that provides all functionality in the xwt.* namespace */
-public final class XWT extends JS.Obj {
-
-    public static final XWT singleton = new XWT();
-    private final JS xwtMath = new XWTMath();
-    private final JS xwtString = new XWTString();
-
-    /** each key is a string representing a filename which the user has already given XWT permission to write to */
-    private static Hashtable safeFiles = new Hashtable();
+public final class XWT extends JSCallable {
+
+    public final Res rr;
+    public XWT(Res rr) { this.rr = rr; }
+
+    /** lets us put multi-level get/put/call keys all in the same method */
+    private class Sub extends JSCallable {
+        String key;
+        Sub(String key) { this.key = key; }
+        public String toString() { return "XWTSUB " + key; }
+        public void put(Object key, Object val) { XWT.this.put(this.key + "." + key, val); }
+        public Object get(Object key) { return XWT.this._get(this.key + "." + key); }
+        public Object call(Object method, JSArray args) { return XWT.this.call(method == null ? key : this.key + "." + method, args); }
+    }
 
-    public Object get(Object name) {
-        if (name.equals("alt")) return Surface.alt ? Boolean.TRUE : Boolean.FALSE;
-        else if (name.equals("control")) return Surface.control ? Boolean.TRUE : Boolean.FALSE;
-        else if (name.equals("shift")) return Surface.shift ? Boolean.TRUE : Boolean.FALSE;
-        else if (name.equals("clipboard")) return Platform.getClipBoard();
-        else if (name.equals("static")) return Static.getStatic("");
-        else if (name.equals("button")) {
+    public Object _get(Object name) {
+        //#switch(name)
+        case "math": return xwtMath;
+        case "string": return xwtString;
+        case "date": return new JSDate();
+        case "origin": return Main.origin;
+        case "box": return new BoxTree();
+        case "log": return new Sub("log");
+        case "ui": return new Sub("ui");
+        case "thread": return new Sub("thread");
+        case "ui.key": return new Sub("ui.key");
+        case "ui.key.alt": return Surface.alt ? Boolean.TRUE : Boolean.FALSE;
+        case "ui.key.control": return Surface.control ? Boolean.TRUE : Boolean.FALSE;
+        case "ui.key.shift": return Surface.shift ? Boolean.TRUE : Boolean.FALSE;
+        case "ui.clipboard": return Platform.getClipBoard();
+        case "ui.maxdim": return new Integer(Short.MAX_VALUE);
+        case "ui.key.name": return new Sub("ui.key.name");
+        case "ui.key.name.alt": return Platform.altKeyName();
+        case "ui.screen": return new Sub("ui.screen");
+        case "ui.screen.width": return new Integer(Platform.getScreenWidth());
+        case "ui.screen.height": return new Integer(Platform.getScreenHeight());
+        case "fs.home": return System.getProperty("user.home");
+        case "fs.temp": return System.getProperty("java.io.tempdir");
+        case "ui.mouse": return new Sub("ui.mouse");
+        case "res": return new Sub("res");
+        case "ui.mouse.button":
             if (Surface.button1 && !Surface.button2 && !Surface.button3) return new Integer(1);
-            else if (!Surface.button1 && Surface.button2 && !Surface.button3) return new Integer(1);
-            else if (!Surface.button1 && !Surface.button2 && Surface.button3) return new Integer(1);
+            else if (!Surface.button1 && Surface.button2 && !Surface.button3) return new Integer(2);
+            else if (!Surface.button1 && !Surface.button2 && Surface.button3) return new Integer(3);
             else return new Integer(0);
-        }
-        else if (name.equals("encodeURI")) throw new Error("not implemented");
-        else if (name.equals("encodeURIComponent")) throw new Error("not implemented");
-        else if (name.equals("decodeURI")) throw new Error("not implemented");
-        else if (name.equals("decodeURIComponent")) throw new Error("not implemented");
-        else return super.get(name);
+        case "undocumented": return new Sub("undocumented");
+        case "undocumented.internal": return new Sub("undocumented.internal");
+        //#end
+        return null;
     }
 
-    public void put(Object name, Object value) {
-        if (name.equals("thread") && value != null && value instanceof JS.Callable) ThreadMessage.newthread((JS.Callable)value);
-        else if (name.equals("clipboard")) Platform.setClipBoard(value.toString());
-        else if (name.equals("proxyAuthorization")) {
-            // FIXME: undocumented, possibly insecure
-            Proxy.Authorization.authorization = value.toString();
-            Proxy.Authorization.waitingForUser.release();
-        } else super.put(name, value);
+    public Object get(Object name) {
+        Object ret = _get(name);
+        if (ret != null) return ret;
+        return !name.equals("clone") && !name.equals("apply") ? rr.get(name) : null;
     }
 
-    private XWT() {
-        super.put("maxdim", new Integer(Short.MAX_VALUE));
-        super.put("origin", Main.origin);
-        super.put("altKeyName", Platform.altKeyName());
-        super.put("screenWidth", new Integer(Platform.getScreenWidth()));
-        super.put("screenHeight", new Integer(Platform.getScreenHeight()));
-        super.put("fileSeparator", File.separator);
-        super.put("homeDir", System.getProperty("user.home"));
-        super.put("tempDir", System.getProperty("java.io.tempdir"));
-        super.put("math", xwtMath);
-        super.put("string", xwtString);
-
-        super.put("newBrowserWindow", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() != 1 || args.elementAt(0) == null) return null;
-            Platform.newBrowserWindow(args.elementAt(0).toString());
-            return null;
-        }});
-
-        super.put("parseFloat", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() != 1 || args.elementAt(0) == null) return null;
-            return new Float(args.elementAt(0).toString());
-        }});
-
-        super.put("parseInt", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() != 1 || args.elementAt(0) == null) return null;
-            return new Float(args.elementAt(0).toString());
-        }});
-
-        super.put("yield", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            sleep(0);
-            return null;
-        }});
-
-        super.put("theme", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-                if (args.length() != 2) return null;
-                if (args.elementAt(0) == null || args.elementAt(1) == null) return null;
-                for(int i=1; i<args.length(); i++) {
-                    if (args.elementAt(i) instanceof String) {
-                        String from = (String)args.elementAt(0);
-                        String to = (String)args.elementAt(i);
-                        if (Log.on) Log.log(this, "retheming from " + from + " to " + to);
-                        Resources.mapFrom.addElement(from);
-                        Resources.mapTo.addElement(to);
-                    }
-                }
-                JS.Callable callback = args.elementAt(args.length() - 1) instanceof JS.Callable ?
-                    (JS.Callable)args.elementAt(args.length() - 1) : null;
-                Template.retheme(callback);
-                return null;
-        }});
-            
-        super.put("println", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() != 1) return null;
-            if (Log.on) Log.logJS(this, (args.elementAt(0) == null ? "**null**" : args.elementAt(0).toString()));
-            return null;
-        }});
-
-        super.put("date", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            Log.log(XWT.class, "date not implemented");
-            //throw new Error("not implemented");
-            return null;
-        }});
-
-        super.put("regexp", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            return new Regexp(args);
-        }});
-
-        super.put("listfonts", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            Object[] fonts = Platform.listFonts();
-            JS.Array ret = new JS.Array();
-            for(int i=0; i<fonts.length; i++) ret.addElement(fonts[i]);
-            return ret;
-        }});
-
-        super.put("xmlrpc", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() != 1 || args.elementAt(0) == null) return null;
-            return new XMLRPC(args.elementAt(0).toString(), "");
-        }});
-
-        super.put("soap", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() == 1 && args.elementAt(0) != null) return new SOAP(args.elementAt(0).toString(), "", null, null);
-            else if (args.length() == 2 && args.elementAt(0) != null && args.elementAt(1) != null)
-                return new SOAP(args.elementAt(0).toString(), "", args.elementAt(1).toString(), null);
-            else if (args.length() == 3 && args.elementAt(0) != null && args.elementAt(1) != null && args.elementAt(2) != null)
-                return new SOAP(args.elementAt(0).toString(), "", args.elementAt(1).toString(), args.elementAt(2).toString());
-            else return null;
-        }});
-
-        super.put("textwidth", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() < 1 || args.length() > 2) return null;
-            if (args.elementAt(0) == null || (args.length() == 2 && args.elementAt(1) == null)) return null;
-            String font = args.length() == 1 ? Platform.getDefaultFont() : args.elementAt(0).toString();
-            String text = args.length() == 1 ? args.elementAt(0).toString() : args.elementAt(1).toString();
-            XWF xwf = XWF.getXWF(font);
-            if (xwf == null) return new Integer(Platform.stringWidth(font, text));
-            else return new Integer(xwf.stringWidth(text));
-        }});
-
-        super.put("textheight", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() > 1) return null;
-            if (args.length() == 1 && args.elementAt(0) == null) return null;
-            String font = args.length() == 0 || args.elementAt(0) == null ? Platform.getDefaultFont() : args.elementAt(0).toString();
-            XWF xwf = XWF.getXWF(font);
-            if (xwf == null) return new Integer(Platform.getMaxAscent(font) + Platform.getMaxDescent(font));
-            else return new Integer(xwf.getMaxAscent() + xwf.getMaxDescent());
-        }});
-        
-        super.put("newBox", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() > 0) Log.log(XWT.class, "DEPRECATED: xwt.newBox() with multiple arguments is deprecated; use xwt.newBox().apply()");
-            JS.Callable callback = null;
-            for(int i=1; i<args.length(); i++)
-                if (args.elementAt(i) instanceof JS.Callable && callback == null)
-                    callback = (JS.Callable)args.elementAt(i);
-            Box ret = new Box(args.length() == 0 || args.elementAt(0) == null ? "box" : args.elementAt(0).toString(),
-                              Template.defaultImportList, callback);
-            for(int i=1; i<args.length(); i++)
-                if (args.elementAt(i) instanceof Box)
-                    ret.put(ret.numChildren(), (Box)args.elementAt(i));
-            for(int i=1; i<args.length(); i++)
-                if (args.elementAt(i) instanceof JS && !(args.elementAt(i) instanceof Box) && !(args.elementAt(i) instanceof JS.Callable)) {
-                    JS s = (JS)args.elementAt(i);
-                    Object[] keys = s.keys();
-                    for(int j=0; j<keys.length; j++) ret.put(keys[j].toString(), s.get(keys[j].toString()));
-                }
-            return ret;
-        }});
-
-        super.put("sleep", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args != null && (args.length() != 1 || args.elementAt(0) == null)) return null;
-            int i = args == null ? 0 : SpecialBoxProperty.stoi(args.elementAt(0).toString());
-            sleep(i);
-            return null;
-        }});
-
-        super.put("openFile", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() != 1) return null;
-            String file = Platform.fileDialog(args.elementAt(0).toString(), false);
-            return file == null ? null : new ByteStream(file);
-        }});
-
-        super.put("saveFile", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() != 2) return null;
-            if (!(args.elementAt(1) instanceof ByteStream)) return null;
-            String file = args.elementAt(0).toString();
-            if (safeFiles.get(Platform.isCaseSensitive() ? file : file.toLowerCase()) == null) {
-                file = Platform.fileDialog(file, true);
-                if (file == null) return null;
-                safeFiles.put(Platform.isCaseSensitive() ? file : file.toLowerCase(), new Object());
-            }
-            try {
-                ((ByteStream)args.elementAt(1)).writeTo(new FileOutputStream(file));
-                return null;
-            } catch (IOException e) {
-                if (Log.on) Log.log(ByteStream.class, "IO Exception while writing a ByteStream to a file");
-                if (Log.on) Log.log(ByteStream.class, e);
-                throw new JS.Exn("error while writing a ByteStream to a file");
-            }
-        }});
-
-        super.put("saveFileAs", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args.length() != 2) return null;
-            if (!(args.elementAt(1) instanceof ByteStream)) return null;
-            String file = args.elementAt(0).toString();
-            file = Platform.fileDialog(file, true);
-            if (file == null) return null;
-            safeFiles.put(Platform.isCaseSensitive() ? file : file.toLowerCase(), new Object());
-            try {
-                ((ByteStream)args.elementAt(1)).writeTo(new FileOutputStream(file));
-                return null;
-            } catch (IOException e) {
-                if (Log.on) Log.log(ByteStream.class, "IO Exception while writing a ByteStream to a file");
-                if (Log.on) Log.log(ByteStream.class, e);
-                throw new JS.Exn("error while writing a ByteStream to a file");
-            }
-        }});
-
-        super.put("utfEncode", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-            if (args == null || args.length() != 1) return null;
-            return new ByteStream(args.elementAt(0).toString().getBytes());
-        }});
-
-        super.put("parseHTML", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-                if (args == null || args.length() != 1 || args.elementAt(0) == null) return null;
-                try {
-                    if (args.elementAt(0) instanceof ByteStream) {
-                        return HTML.parseReader(new InputStreamReader(((ByteStream)args.elementAt(0)).getInputStream()));
-                    } else {
-                        return HTML.parseReader(new StringReader(args.elementAt(0).toString()));
-                    }
-                } catch (IOException e) {
-                    if (Log.on) Log.log(HTML.class, "IO Exception while parsing HTML");
-                    if (Log.on) Log.log(HTML.class, e);
-                    throw new JS.Exn("error while parsing HTML");
-                }
-            }
-        });
-    
-    super.put("recursivePrintObject", new JS.Callable() { public Object call(JS.Array args) {
-        if (args.length() != 1) return null;
-        recurse("", "", args.elementAt(0));
-        return null;
-    }});
+    public void put(Object name, final Object value) {
+        //#switch(name)
+        case "thread":
+            System.out.println("new thread " + value);
+            Scheduler.add(new Scheduler.Task() {
+                    public String toString() { return "thread task"; }
+                    public void perform() { JSContext.invokePauseable((JSFunction)value); } });
+        case "ui.clipboard": Platform.setClipBoard((String)value);
+        case "ui.frame": Platform.createSurface((Box)value, true, true);
+        case "ui.window": Platform.createSurface((Box)value, false, true);
+        case "undocumented.internal.proxyAuthorization":
+            HTTP.Proxy.Authorization.authorization = value.toString();
+            HTTP.Proxy.Authorization.waitingForUser.release();
+        //#end
+    }
 
-    super.put("loadArchive", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-        if (!ThreadMessage.suspendThread()) return null;
-        try {
-            if (args == null || args.length() < 1 || args.elementAt(0) == null) return null;
-            URL u = new URL(args.elementAt(0).toString());
-            
-            JS.Callable callback = null;
-            if (args.length() == 2 && args.elementAt(1) != null && args.elementAt(1) instanceof JS.Callable)
-                callback = (JS.Callable)args.elementAt(1);
-            
-            if (!u.getFile().endsWith(".xwar")) {
-                if (Log.on) Log.log(this, "Error: archive names must end with .xwar: " + u.getFile());
-                throw new JS.Exn("Error: archive names must end with .xwar: " + u.getFile());
-            }
-            
-            if (u.getProtocol().equals("http")) {
-                HTTP http = new HTTP(u.toString());
-                if (Main.originAddr == null) {
-                    try {
-                        Main.originHost = u.getHost();
-                        Main.originAddr = InetAddress.getByName(Main.originHost);
-                    } catch (UnknownHostException e) {
-                        if (Log.on) Log.log(this, "couldn't resolve " + u.getHost() + "; proceeding without permissions");
-                        Main.originAddr = InetAddress.getByName("0.0.0.0");
-                    }
-                } else {
-                    Main.originAddr = InetAddress.getByName("0.0.0.0");
-                }
-                HTTP.HTTPInputStream in = http.GET();
-                Resources.loadArchive(in, in.getContentLength(), callback);
-                
-            } else if (u.getProtocol().equals("file")) {
-                if (Main.originAddr != null) {
-                    if (Log.on) Log.log(this, "scripts downloaded from the network may not load xwars from the local filesystem");
-                    throw new JS.Exn("scripts downloaded from the network may not load xwars from the local filesystem");
-                }
-                Resources.loadArchive(new FileInputStream(u.getFile()), (int)new File(u.getFile()).length(), callback);
-                
-            } else {
-                if (Log.on) Log.log(this, "unknown protocol \"" + u.getProtocol() + "\"");
-                throw new JS.Exn("unknown protocol \"" + u.getProtocol() + "\"");
+    public Object call(Object name, JSArray args) throws JS.Exn {
+        Object a = args.elementAt(0);
+        Object b = args.elementAt(1);
+        Object c = args.elementAt(2);
+        if (name.equals("date")) return new org.xwt.js.JSDate(args);
+        else if (args.length() == 0 && name.equals("thread.yield")) { sleep(0); return null; }
+        else if (args.length() == 2) {
+            //#switch(name)
+            case "res.watch": return new Res.ProgressWatcher((Res)a, (JSFunction)b);
+            case "soap": return new SOAP((String)args.elementAt(0), "", (String)args.elementAt(1), null);
+            case "apply":
+                Template.getTemplate((Res)args.elementAt(1)).apply((Box)args.elementAt(0), XWT.this);
+                return args.elementAt(0);
+            //#end
+        } else if (args.length() == 3 && name.equals("soap")) {
+            if (name.equals("soap")) {
+                return new SOAP((String)args.elementAt(0), "", (String)args.elementAt(1), (String)args.elementAt(2));
+            } else if (name.equals("graft")) {
+                if (a instanceof Box) throw new JS.Exn("can't graft onto Boxes (yet)");
+                if (a instanceof Number) throw new JS.Exn("can't graft onto Numbers (yet)");
+                if (a instanceof String) throw new JS.Exn("can't graft onto Strings (yet)");
+                if (a instanceof Res) return new Res.Graft((Res)a, b, c);
+                return new JS.Graft((JS)a, b, c);
             }
-            
-        } catch (MalformedURLException me) {
-            if (Log.on) Log.log(this, "Malformed URL: " + args.elementAt(0));
-            if (Log.on) Log.log(this, me);
-            throw new JS.Exn(me.toString());
-            
-        } catch (IOException ioe) {
-            if (Log.on) Log.log(this, "IOException while loading archive:");
-            if (Log.on) Log.log(this, ioe);
-            throw new JS.Exn(ioe.toString());
-            
-        } finally {
-            ThreadMessage.resumeThread();
-            
+        } else if (args.length() == 1) {
+            //#switch(name)
+            case "ui.browser": Platform.newBrowserWindow((String)a); return null;
+            case "clone": return new XWT((Res)a);
+            case "res.unzip": return new Res.Zip((Res)a);
+            case "res.uncab": return new Res.Cab((Res)a);
+            case "res.cache": try { return new Res.CachedRes((Res)a, "resources", true); }
+                              catch (Res.NotCacheableException e) { throw new JS.Exn("this resource cannot be cached"); }
+            case "res.url":
+                String url = (String)a;
+                if (url.startsWith("http://")) return new Res.HTTP(url);
+                else if (url.startsWith("https://")) return new Res.HTTP(url);
+                else if (url.startsWith("data:")) return new Res.ByteArray(Base64.decode(url.substring(5)), null);
+                else if (url.startsWith("utf8:")) return new Res.ByteArray(url.substring(5).getBytes(), null);
+                throw new JS.Exn("invalid resource specifier " + url);
+
+            case "thread.sleep": sleep(JS.toInt(a)); return null;
+            case "log.println": Log.logJS(this, a== null ? "**null**" : a.toString()); return null;
+            case "log.dump": Log.recursiveLog("","",a); return null;
+            case "regexp": return new JSRegexp(a, null);
+            case "rpc.xml": return new XMLRPC((String)a, "");
+            case "rpc.soap": return new SOAP((String)a, "", null, null);
+            case "crypto.rsa": /* FEATURE */ break;
+            case "crypto.md5": /* FEATURE */ break;
+            case "crypto.sha1": /* FEATURE */ break;
+            case "crypto.rc4": /* FEATURE */ break;
+            case "stream.parse.html": /* FEATURE */ break;
+            case "stream.parse.xml": /* FEATURE */ break;
+            case "stream.parse.utf8": /* FEATURE */ break;
+            //#end
         }
         return null;
-    }});
-
-    super.put("prefetchImage", new JS.Callable() { public Object call(JS.Array args) throws JS.Exn {
-        if (args == null || args.length() < 1 || args.elementAt(0) == null) return null;
-        Box.getImage(args.elementAt(0).toString(),
-                     args.length() > 1 && args.elementAt(1) instanceof JS.Callable ? (JS.Callable)args.elementAt(1) : null);
-        return null;
-    }});
-    }
-
-    private static void recurse(String indent, String name, Object o) {
-        if (!name.equals("")) name += " : ";
-
-        if (o == null) {
-            Log.logJS(indent + name + "<null>");
-
-        } else if (o instanceof JS.Array) {
-            Log.logJS(indent + name + "<array>");
-            JS.Array na = (JS.Array)o;
-            for(int i=0; i<na.length(); i++)
-                recurse(indent + "  ", i + "", na.elementAt(i));
-
-        } else if (o instanceof JS) {
-            Log.logJS(indent + name + "<object>");
-            JS s = (JS)o;
-            Object[] keys = s.keys();
-            for(int i=0; i<keys.length; i++)
-                recurse(indent + "  ", keys[i].toString(),
-                        (keys[i] instanceof Integer) ?
-                        s.get(((Integer)keys[i])) : s.get(keys[i].toString()));
-
-        } else {
-            Log.logJS(indent + name + o);
-
-        }
     }
 
-
-    public static void sleep(int i) {
-        java.lang.Thread thread = java.lang.Thread.currentThread();
-        if (!(thread instanceof ThreadMessage)) {
-            if (Log.on) Log.log(XWT.class, "cannot sleep() or yield() in the foreground thread");
-        } else {
-            ThreadMessage mythread = (ThreadMessage)thread;
-            mythread.done.release();
-            if (i > 0) try { java.lang.Thread.sleep(i); } catch (Exception e) { }
-            MessageQueue.add(mythread);
-            mythread.go.block();
-        }
+    public static void sleep(final int i) {
+        final Callback callback = JSContext.pause();
+        final long currentTime = System.currentTimeMillis();
+        new Thread() {
+            public void run() {
+                try { Thread.sleep(i); } catch (InterruptedException e) { }
+                Scheduler.add(new Scheduler.Task() { public void perform() { callback.call(null); } });
+            }
+        }.start();
     }
     
-    private static class XWTMath extends JS.Obj {
-        public XWTMath() {
-            JS gs = new JS.GlobalScope();
-            put("isNaN",gs.get("isNaN"));
-            put("isFinite",gs.get("isFinite"));
-            put("NaN",gs.get("NaN"));
-            put("Infinity",gs.get("Infinity"));
-            setSeal(true);
+    public static final JSMath xwtMath = new JSMath() {
+            private JS gs = new JSScope.Global(null);
+            public String toString() { return "XWTMATH"; }
+            public Object get(Object key) {
+                //#switch(key)
+                case "isNaN": return gs.get("isNaN");
+                case "isFinite": return gs.get("isFinite");
+                case "NaN": return gs.get("NaN");
+                case "Infinity": return gs.get("Infinity");
+                //#end
+                return super.get(key);
+            }
+        };
+
+    public static final JSObj xwtString = new JSObj() {
+            private JS gs = new JSScope.Global(null);
+            public void put(Object key, Object val) { }
+            public Object get(Object key) {
+                //#switch(key)
+                case "parseInt": return gs.get("parseInt");
+                case "parseFloat": return gs.get("parseFloat");
+                case "decodeURI": return gs.get("decodeURI");
+                case "decodeURIComponent": return gs.get("decodeURIComponent");
+                case "encodeURI": return gs.get("encodeURI");
+                case "encodeURIComponent": return gs.get("encodeURIComponent");
+                case "escape": return gs.get("escape");
+                case "unescape": return gs.get("unescape");
+                case "fromCharCode": return gs.get("stringFromCharCode");
+                //#end
+                return super.get(key);
+            }
+        };
+
+    private class XMLHelper extends XML {
+        Vector obStack = new Vector();
+        public XMLHelper() { super(BUFFER_SIZE); }
+        public void startElement(XML.Element c) throws XML.SchemaException {
+            JS o = new JSObj();
+            o.put("$name", c.localName);
+            for(int i=0; i<c.len; i++) o.put(c.keys[i], c.vals[i]);
+            o.put("$numchildren", new Integer(0));
+            obStack.addElement(o);
         }
-        public Object get(Object key) {
-            Object ret = super.get(key);
-            if(ret == null) ret = JS.Math.get(key);
-            return ret;
+        public void endElement(XML.Element c) throws XML.SchemaException {
+            if (obStack.size() == 1) return;
+            JS me = (JS)obStack.lastElement();
+            obStack.setSize(obStack.size() - 1);
+            JS parent = (JS)obStack.lastElement();
+            int numchildren = ((Integer)parent.get("$numchildren")).intValue();
+            parent.put("$numchildren", new Integer(numchildren + 1));
+            parent.put(new Integer(numchildren), me);
         }
-    }
-    private static class XWTString extends JS.Obj {
-        public XWTString() {
-            JS gs = new JS.GlobalScope();
-            put("parseInt",gs.get("parseInt"));
-            put("parseFloat",gs.get("parseFloat"));
-            put("decodeURI",gs.get("decodeURI"));
-            put("decodeURIComponent",gs.get("decodeURIComponent"));
-            put("encodeURI",gs.get("encodeURI"));
-            put("encodeURIComponent",gs.get("encodeURIComponent"));
-            put("fromCharCode",gs.get("stringFromCharCode"));
-            setSeal(true);
+        public void characters(char[] ch, int start, int length) throws XML.SchemaException {
+            String s = new String(ch, start, length);
+            JS parent = (JS)obStack.lastElement();
+            int numchildren = ((Integer)parent.get("$numchildren")).intValue();
+            Object lastChild = parent.get(new Integer(numchildren - 1));
+            if (lastChild instanceof String) {
+                parent.put(new Integer(numchildren - 1), lastChild + s);
+            } else {
+                parent.put("$numchildren", new Integer(numchildren + 1));
+                parent.put(new Integer(numchildren), s);
+            }
+        }
+        public void whitespace(char[] ch, int start, int length) {}
+        public JS doParse(InputStream is) throws JS.Exn {
+            try { 
+                BufferedReader r = new BufferedReader(new InputStreamReader(is));
+                parse(r);
+            } catch (XML.XMLException e) {
+                throw new JS.Exn("error parsing XML: " + e.toString());
+            } catch (IOException e) {
+                if (Log.on) Log.log(this, "IO Exception while reading from file");
+                if (Log.on) Log.log(this, e);
+                throw new JS.Exn("error reading from Resource");
+            }
+            return obStack.size() >= 1 ? (JS)obStack.elementAt(0) : null;
         }
     }
 }