1
2 package org.xwt;
3
4 import java.io.*;
5 import java.net.*;
6 import java.text.*;
7 import java.util.*;
8 import org.xwt.js.*;
9 import org.xwt.util.*;
10 import org.xwt.translators.*;
11 import org.bouncycastle.util.encoders.Base64;
12
13
14 public final class XWT extends JS.Cloneable {
15
16
17 private final JS rr;
18 public XWT(Stream rr) { this.rr = bless(rr); }
19
20 public JS resolveString(String str, boolean permitAbsolute) throws JSExn {
21 if (str.indexOf("://") != -1) {
22 if (permitAbsolute) return (Stream)url2res(str);
23 throw new JSExn("absolute URL " + str + " not permitted here");
24 }
25
26 JS ret = (JS)getAndTriggerTraps("");
27 while(str.indexOf('.') != -1) {
28 String path = str.substring(0, str.indexOf('.'));
29 str = str.substring(str.indexOf('.') + 1);
30 ret = (JS)ret.get(path);
31 }
32 ret = (JS)ret.get(str);
33 return ret;
34 }
35
36
37 private class Sub extends JS {
38 String key;
39 Sub(String key) { this.key = key; }
40 public void put(Object key, Object val) throws JSExn { XWT.this.put(this.key + "." + key, val); }
41 public Object get(Object key) throws JSExn { return XWT.this.get(this.key + "." + key); }
42 public Object call(Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
43 return XWT.this.callMethod(this.key, a0, a1, a2, rest, nargs);
44 }
45 public Object callMethod(Object method, Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
46 return XWT.this.callMethod(this.key + "." + method, a0, a1, a2, rest, nargs);
47 }
48 }
49 private Cache subCache = new Cache(20);
50 private Sub getSub(String s) {
51 Sub ret = (Sub)subCache.get(s);
52 if (ret == null) subCache.put(s, ret = new Sub(s));
53 return ret;
54 }
55
56 public Object get(Object name) throws JSExn {
57 if (name instanceof String && ((String)name).length() == 0) return rr;
58
59 case "math": return xwtMath;
60 case "string": return xwtString;
61 case "date": return METHOD;
62 case "box": return new Box();
63 case "clone": return METHOD;
64 case "bless": return METHOD;
65 case "regexp": return METHOD;
66 case "ui": return getSub("ui");
67 case "ui.font": return getSub("ui.font");
68 case "ui.font.sansserif": return Main.builtin.get("fonts/vera/Vera.ttf");
69 case "ui.font.monospace": return Main.builtin.get("fonts/vera/VeraMono.ttf");
70 case "ui.font.serif": return Main.builtin.get("fonts/vera/VeraSe.ttf");
71 case "ui.browser": return METHOD;
72 case "ui.mouse": return getSub("ui.mouse");
73 case "ui.mouse.button":
74 if (Surface.button1 && !Surface.button2 && !Surface.button3) return N(1);
75 else if (!Surface.button1 && Surface.button2 && !Surface.button3) return N(2);
76 else if (!Surface.button1 && !Surface.button2 && Surface.button3) return N(3);
77 else return ZERO;
78 case "ui.key": return getSub("ui.key");
79 case "ui.key.name": return getSub("ui.key.name");
80 case "ui.key.name.alt": return Platform.altKeyName();
81 case "ui.key.alt": return Surface.alt ? T : F;
82 case "ui.key.control": return Surface.control ? T : F;
83 case "ui.key.shift": return Surface.shift ? T : F;
84 case "ui.clipboard": return Platform.getClipBoard();
85 case "ui.maxdim": return N(Short.MAX_VALUE);
86 case "ui.screen": return getSub("ui.screen");
87 case "ui.screen.width": return N(Platform.getScreenWidth());
88 case "ui.screen.height": return N(Platform.getScreenHeight());
89 case "undocumented": return getSub("undocumented");
90 case "undocumented.initialOrigin": return Main.origin;
91 case "undocumented.initialTemplate": return Main.initialTemplate;
92 case "thread": return getSub("thread");
93 case "thread.yield": return METHOD;
94 case "thread.sleep": return METHOD;
95 case "stream": return getSub("stream");
96 case "stream.homedir": return url2res("file:" + System.getProperty("user.home"));
97 case "stream.tempdir": return url2res("file:" + System.getProperty("java.io.tempdir"));
98 case "stream.watch": return METHOD;
99 case "stream.unzip": return METHOD;
100 case "stream.uncab": return METHOD;
101 case "stream.cache": return METHOD;
102 case "stream.url": return METHOD;
103 case "stream.parse.html": return METHOD;
104 case "stream.parse.xml": return METHOD;
105 case "stream.parse.utf8": return METHOD;
106 case "net": return getSub("net");
107 case "net.rpc": return getSub("net.rpc");
108 case "net.rpc.xml": return METHOD;
109 case "net.rpc.soap": return METHOD;
110 case "log": return getSub("log");
111 case "log.debug": return METHOD;
112 case "log.info": return METHOD;
113 case "log.warn": return METHOD;
114 case "log.error": return METHOD;
115 case "crypto": return getSub("crypto");
116 case "crypto.rsa": return METHOD;
117 case "crypto.md5": return METHOD;
118 case "crypto.sha1": return METHOD;
119 case "crypto.rc4": return METHOD;
120 //#end
121 return super.get(name);
122 }
123
124 public void put(Object name, final Object value) throws JSExn {
125 //#switch(name)
126 case "thread": Scheduler.add((Scheduler.Task)value); return;
127 case "ui.clipboard": Platform.setClipBoard((String)value); return;
128 case "ui.frame": Platform.createSurface((Box)value, true, true); return;
129 case "ui.window": Platform.createSurface((Box)value, false, true); return;
130 case "undocumented.proxyAuthorization":
131 HTTP.Proxy.Authorization.authorization = value.toString();
132 HTTP.Proxy.Authorization.waitingForUser.release();
133 return;
134 //#end
135 throw new JSExn("attempted to put unknown property: xwt."+name);
136 }
137
138 public Object callMethod(Object name, Object a, Object b, Object c, Object[] rest, int nargs) throws JSExn {
139 try {
140 //#switch(name)
141 case "date": return new JSDate(a, b, c, rest, nargs);
142 case "net.rpc.soap": return new SOAP((String)a, "", (String)b, (String)c);
143 // FIXME support object dumping
144 case "log.debug": JS.debug(a== null ? "**null**" : a.toString()); return null;
145 case "log.info": JS.info(a== null ? "**null**" : a.toString()); return null;
146 case "log.warn": JS.warn(a== null ? "**null**" : a.toString()); return null;
147 case "log.error": JS.error(a== null ? "**null**" : a.toString()); return null;
148 //#end
149
150 switch (nargs) {
151 case 0:
152 //#switch(name)
153 case "thread.yield": sleep(0); return null;
154 //#end
155 break;
156 case 1:
157 //#switch(name)
158 case "clone":
159 if (!(a instanceof JS.Cloneable)) throw new JSExn("cannot clone a " + a.getClass().getName());
160 return ((JS.Cloneable)a).jsclone();
161 case "bless": return bless((JS)a);
162 case "ui.browser": Platform.newBrowserWindow((String)a); return null;
163 case "stream.unzip": return new Stream.Zip((Stream)a);
164 case "stream.uncab": return new Stream.Cab((Stream)a);
165 case "stream.cache":
166 try { return new Stream.CachedStream((Stream)a, "resources", true); }
167 catch (Stream.NotCacheableException e) { throw new JSExn("this resource cannot be cached"); }
168 case "stream.url": {
169 String url = (String)a;
170 if (url.startsWith("http://")) return new Stream.HTTP(url);
171 else if (url.startsWith("https://")) return new Stream.HTTP(url);
172 else if (url.startsWith("data:")) return new Stream.ByteArray(Base64.decode(url.substring(5)), null);
173 else if (url.startsWith("utf8:")) return new Stream.ByteArray(url.substring(5).getBytes(), null);
174 throw new JSExn("invalid resource specifier " + url);
175 }
176 case "thread.sleep": sleep(JS.toInt(a)); return null;
177 case "regexp": return new JSRegexp(a, null);
178 case "net.rpc.xml": return new XMLRPC((String)a, "");
179 case "crypto.rsa": /* FEATURE */ return null;
180 case "crypto.md5": /* FEATURE */ return null;
181 case "crypto.sha1": /* FEATURE */ return null;
182 case "crypto.rc4": /* FEATURE */ return null;
183 case "stream.parse.html": throw new JSExn("not implemented yet"); //return null;
184 case "stream.parse.xml": new XMLHelper((JS)b).doParse((JS)a); return null;
185 // FIXME backgrounding
186 case "stream.parse.utf8": try { return new String(InputStreamToByteArray.convert(Stream.getInputStream(a))); }
187 catch (Exception e) { Log.warn(this, e); }
188 //#end
189 break;
190 case 2:
191 //#switch(name)
192 case "stream.watch": return new Stream.ProgressWatcher((Stream)a, (JS)b);
193 case "regexp": return new JSRegexp(a, b);
194 //#end
195 break;
196 }
197 } catch (RuntimeException e) {
198 // FIXME: maybe JSExn should take a second argument, Exception
199 Log.warn(this, "xwt."+name+"() threw: " + e);
200 throw new JSExn("invalid argument for xwt object method "+name+"()");
201 }
202
203 throw new JSExn("invalid number of arguments for xwt object method "+name+"()");
204 }
205
206 public Stream url2res(String url) throws JSExn {
207 if (url.startsWith("http://")) return new Stream.HTTP(url);
208 else if (url.startsWith("https://")) return new Stream.HTTP(url);
209 else if (url.startsWith("data:")) return new Stream.ByteArray(Base64.decode(url.substring(5)), null);
210 else if (url.startsWith("utf8:")) return new Stream.ByteArray(url.substring(5).getBytes(), null);
211 else throw new JSExn("invalid resource specifier " + url);
212 // FIXME support file:// via dialog boxes
213 }
214
215 public static void sleep(final int i) throws JSExn {
216 try {
217 final JS.UnpauseCallback callback = JS.pause();
218 final long currentTime = System.currentTimeMillis();
219 // FEATURE use a single sleeper thread
220 new Thread() { public void run() {
221 try { Thread.sleep(i); } catch (InterruptedException e) { }
222 Scheduler.add(callback);
223 } }.start();
224 } catch (JS.NotPauseableException npe) {
225 throw new JSExn("you cannot sleep or yield in the foreground thread");
226 }
227 }
228
229 public static final JSMath xwtMath = new JSMath() {
230 private JS gs = new JSScope.Global();
231 public Object get(Object key) throws JSExn {
232 //#switch(key)
233 case "isNaN": return gs.get("isNaN");
234 case "isFinite": return gs.get("isFinite");
235 case "NaN": return gs.get("NaN");
236 case "Infinity": return gs.get("Infinity");
237 //#end
238 return super.get(key);
239 }
240 };
241
242 public static final JS xwtString = new JS() {
243 private JS gs = new JSScope.Global();
244 public void put(Object key, Object val) { }
245 public Object get(Object key) throws JSExn {
246 //#switch(key)
247 case "parseInt": return gs.get("parseInt");
248 case "parseFloat": return gs.get("parseFloat");
249 case "decodeURI": return gs.get("decodeURI");
250 case "decodeURIComponent": return gs.get("decodeURIComponent");
251 case "encodeURI": return gs.get("encodeURI");
252 case "encodeURIComponent": return gs.get("encodeURIComponent");
253 case "escape": return gs.get("escape");
254 case "unescape": return gs.get("unescape");
255 case "fromCharCode": return gs.get("stringFromCharCode");
256 //#end
257 return null;
258 }
259 };
260
261 private class XMLHelper extends XML {
262 private class Wrapper extends XML.Exn { public JSExn wrapee; public Wrapper(JSExn jse) { super(""); wrapee = jse; } }
263 private JS characters, whitespace, endElement, startElement;
264 public XMLHelper(JS b) throws JSExn {
265 super(BUFFER_SIZE);
266 startElement = (JS)b.getAndTriggerTraps("startElement");
267 endElement = (JS)b.getAndTriggerTraps("endElement");
268 characters = (JS)b.getAndTriggerTraps("characters");
269 whitespace = (JS)b.getAndTriggerTraps("whitespace");
270 }
271
272 public void startElement(XML.Element c) throws XML.Exn { try {
273 JS attrs = new JS();
274 // FIXME attribute URIs? add an additional hash?
275 for(int i=0; i<c.getAttrLen(); i++) attrs.put(c.getAttrKey(i), c.getAttrVal(i));
276 startElement.call(c.getLocalName(), attrs, c.getUri(), null, 3);
277 } catch (JSExn jse) { throw new Wrapper(jse); } }
278
279 public void endElement(XML.Element c) throws XML.Exn { try {
280 endElement.call(c.getLocalName(), c.getUri(), null, null, 2);
281 } catch (JSExn jse) { throw new Wrapper(jse); } }
282
283 public void characters(char[] ch, int start, int length) throws XML.Exn { try {
284 characters.call(new String(ch, start, length), null, null, null, 1);
285 } catch (JSExn jse) { throw new Wrapper(jse); } }
286
287 public void whitespace(char[] ch, int start, int length) throws XML.Exn { try {
288 whitespace.call(new String(ch, start, length), null, null, null, 1);
289 } catch (JSExn jse) { throw new Wrapper(jse); } }
290
291 public void doParse(JS s) throws JSExn {
292 try {
293 parse(new BufferedReader(new InputStreamReader(Stream.getInputStream(s))));
294 } catch (Wrapper e) {
295 throw e.wrapee;
296 } catch (XML.Exn e) {
297 throw new JSExn("error parsing XML: " + e.toString());
298 } catch (IOException e) {
299 if (Log.on) Log.info(this, "IO Exception while reading from file");
300 if (Log.on) Log.info(this, e);
301 throw new JSExn("error reading from Resource");
302 }
303 }
304 }
305
306 // FEATURE: move this into builtin.xwar
307 public Blessing bless(JS b) { return new XWT.Blessing((JS.Cloneable)b, this, null, null); }
308 public static class Blessing extends JS.Clone {
309 private XWT xwt;
310 private Template t = null;
311 private Object parentkey = null;
312 private Blessing parent = null;
313 public Blessing(JS.Cloneable clonee, XWT xwt, Blessing parent, Object parentkey) {
314 super(clonee); this.xwt = xwt; this.parentkey = parentkey; this.parent = parent; }
315 public Object get(Object key) throws JSExn {
316 return key.equals("") ? ((Object)getStatic()) : (new Blessing((JS.Cloneable)clonee.get(key), xwt, this, key));
317 }
318 public static Blessing getBlessing(Object o) {
319 if (!(o instanceof JS)) return null;
320 JS js = (JS)o;
321 while (js instanceof JS.Clone && !(js instanceof Blessing)) js = ((JS.Clone)js).getClonee();
322 if (!(js instanceof Blessing)) return null;
323 return (Blessing)js;
324 }
325 public InputStream getImage() throws JSExn {
326 try {
327 InputStream in = Stream.getInputStream(this);
328 if (in != null) return in;
329 } catch (IOException e) { /* DELIBERATE */ }
330 String[] exts = new String[] { ".png", ".jpeg", ".gif" };
331 for (int i=0; i < exts.length; i++)
332 try {
333 InputStream in = Stream.getInputStream(parent.get(parentkey + exts[i]));
334 if (in != null) return in;
335 } catch (IOException f) { /* DELIBERATE */ }
336 return null;
337 }
338 public JSScope getStatic() {
339 try {
340 // FIXME background?
341 if (t == null) t = new Template(Stream.getInputStream(parent.get(parentkey + ".xwt")), xwt);
342 return t.getStatic();
343 } catch (Exception e) {
344 Log.error(this, e);
345 return null;
346 }
347 }
348 public Object call(Object a, Object b, Object c, Object[] rest, int nargs) throws JSExn {
349 if (nargs != 1) throw new JSExn("FIXME can only call with one arg");
350 getStatic();
351 t.apply((Box)a);
352 return a;
353 }
354 }
355
356 }
357