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annotate lib/js/urweb.js @ 2111:809bceab15a3

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Don't allow singleton <button> tags
author Adam Chlipala <adam@chlipala.net>
date Sun, 01 Feb 2015 15:50:54 -0500
parents 9e9c915f554c
children f89be9cd2087
rev   line source
adamc@1036 1 // Detect browser quirks that we should be aware of.
adamc@1036 2
adamc@1036 3 function needsDynPrefix() {
adamc@1260 4 var span = document.createElement("span");
adamc@1260 5 span.innerHTML = "<script>alert('test');</script>";
adamc@1260 6 var scripts = span.getElementsByTagName("script");
adamc@1260 7 return scripts.length == 0;
adamc@1036 8 }
adamc@1036 9
adamc@1036 10 var dynPrefix = needsDynPrefix() ? "<span style=\"display:none\">A</span>" : "";
adamc@1036 11
adamc@970 12 // Function versions of operators
adamc@970 13
adamc@970 14 function not(x) { return !x; }
adamc@970 15 function neg(x) { return -x; }
adamc@970 16
adamc@970 17 function eq(x, y) { return x == y; }
adamc@970 18 function plus(x, y) { return x + y; }
adamc@970 19 function minus(x, y) { return x - y; }
adamc@970 20 function times(x, y) { return x * y; }
adamc@970 21 function div(x, y) { return x / y; }
adam@1619 22 function divInt(x, y) { if (y == 0) er("Division by zero"); var n = x / y; return n < 0 ? Math.ceil(n) : Math.floor(n); }
adamc@970 23 function mod(x, y) { return x % y; }
adam@1619 24 function modInt(x, y) { if (y == 0) er("Division by zero"); var n = x % y; return n < 0 ? Math.ceil(n) : Math.floor(n); }
adamc@970 25 function lt(x, y) { return x < y; }
adamc@970 26 function le(x, y) { return x <= y; }
adamc@970 27
adamc@1061 28 // Characters
adamc@1061 29
adamc@1061 30 function isLower(c) { return c >= 'a' && c <= 'z'; }
adamc@1061 31 function isUpper(c) { return c >= 'A' && c <= 'Z'; }
adamc@1061 32 function isAlpha(c) { return isLower(c) || isUpper(c); }
adamc@1061 33 function isDigit(c) { return c >= '0' && c <= '9'; }
adamc@1061 34 function isAlnum(c) { return isAlpha(c) || isDigit(c); }
adamc@1061 35 function isBlank(c) { return c == ' ' || c == '\t'; }
adamc@1061 36 function isSpace(c) { return isBlank(c) || c == '\r' || c == '\n'; }
adamc@1061 37 function isXdigit(c) { return isDigit(c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'); }
adam@1927 38 function ord(c) { return c.charCodeAt(0); }
adam@1927 39 function isPrint(c) { return ord(c) > 31 && ord(c) < 127; }
adamc@1177 40 function toLower(c) { return c.toLowerCase(); }
adamc@1177 41 function toUpper(c) { return c.toUpperCase(); }
adamc@1061 42
adamc@692 43 // Lists
adamc@692 44
adamc@580 45 function cons(v, ls) {
adamc@1260 46 return { next : ls, data : v };
adamc@690 47 }
adamc@969 48 function rev(ls) {
adamc@1260 49 var acc = null;
adamc@1260 50 for (; ls; ls = ls.next)
adam@1643 51 acc = cons(ls.data, acc);
adamc@1260 52 return acc;
adamc@969 53 }
adamc@690 54 function concat(ls1, ls2) {
adamc@1260 55 var acc = ls2;
adamc@1260 56 ls1 = rev(ls1);
adamc@1260 57 for (; ls1; ls1 = ls1.next)
adamc@1260 58 acc = cons(ls1.data, acc);
adamc@1260 59 return acc;
adamc@690 60 }
adamc@690 61 function member(x, ls) {
adamc@1260 62 for (; ls; ls = ls.next)
adamc@1260 63 if (ls.data == x)
adamc@1260 64 return true;
adamc@1260 65 return false;
adamc@690 66 }
adamc@690 67 function remove(x, ls) {
adamc@1260 68 var acc = null;
adamc@969 69
adamc@1260 70 for (; ls; ls = ls.next)
adamc@1260 71 if (ls.data == x)
adamc@1260 72 return concat(acc, ls.next);
adamc@1260 73 else
adamc@1260 74 acc = cons(ls.data, acc);
adamc@969 75
adamc@1260 76 return ls;
adamc@690 77 }
adamc@690 78 function union(ls1, ls2) {
adamc@1260 79 var acc = ls2;
adamc@969 80
adamc@1260 81 for (; ls1; ls1 = ls1.next)
adamc@1260 82 if (!member(ls1.data, ls2))
adamc@1260 83 acc = cons(ls1.data, acc);
adamc@969 84
adamc@1260 85 return acc;
adamc@580 86 }
adamc@703 87 function length(ls) {
adamc@1260 88 var acc = 0;
adamc@969 89
adamc@1260 90 for (; ls; ls = ls.next)
adamc@1260 91 ++acc;
adamc@969 92
adamc@1260 93 return acc;
adamc@703 94 }
adamc@670 95
adamc@690 96
adam@1571 97 // Floats
adam@1571 98
adam@1571 99 function float(n) {
adam@1571 100 return n;
adam@1571 101 }
adam@1571 102
adam@1571 103 function trunc(n) {
adam@1571 104 return ~~n;
adam@1571 105 }
adam@1571 106
adam@1571 107 function ceil(n) {
adam@1571 108 return Math.ceil(n);
adam@1571 109 }
adam@1571 110
adam@1571 111 function round(n) {
adam@1571 112 return Math.round(n);
adam@1571 113 }
adam@1571 114
adam@2110 115 function pow(n, m) {
adam@2110 116 return Math.pow(n, m);
adam@2110 117 }
adam@2110 118
adam@1571 119
adam@1599 120 // Time, represented as counts of microseconds since the epoch
adam@1487 121
adam@1629 122 var time_format = "%c";
adam@1629 123
adam@1487 124 function showTime(tm) {
adam@1629 125 return strftime(time_format, tm);
adam@1629 126 }
adam@1629 127
adam@1629 128 function showTimeHtml(tm) {
adam@1629 129 return eh(showTime(tm));
adam@1487 130 }
adam@1487 131
adam@1487 132 function now() {
adam@1487 133 return (new Date()).getTime() * 1000;
adam@1487 134 }
adam@1487 135
adam@1514 136 function diffInSeconds(tm1, tm2) {
adam@1514 137 return Math.round((tm2 - tm1) / 1000000);
adam@1514 138 }
adam@1514 139
adam@1685 140 function diffInMilliseconds(tm1, tm2) {
adam@1685 141 return Math.round((tm2 - tm1) / 1000);
adam@1685 142 }
adam@1685 143
adam@1514 144 function toSeconds(tm) {
adam@1514 145 return Math.round(tm / 1000000);
adam@1514 146 }
adam@1514 147
adam@1685 148 function toMilliseconds(tm) {
adam@1685 149 return Math.round(tm / 1000);
adam@1685 150 }
adam@1685 151
adam@1518 152 function addSeconds(tm, n) {
adam@1518 153 return tm + n * 1000000;
adam@1518 154 }
adam@1518 155
adam@1599 156 function stringToTime_error(string) {
adam@1599 157 var t = Date.parse(string);
adam@1599 158 if (isNaN(t))
adam@1632 159 er("Invalid date string: " + string);
adam@1599 160 else
adam@1599 161 return t * 1000;
adam@1599 162 }
adam@1599 163
adam@1599 164 function stringToTime(string) {
adam@1599 165 try {
adam@1599 166 var t = Date.parse(string);
adam@1599 167 if (isNaN(t))
adam@1599 168 return null;
adam@1599 169 else
adam@1599 170 return t * 1000;
adam@1599 171 } catch (e) {
adam@1599 172 return null;
adam@1599 173 }
rmbruijn@1597 174 }
rmbruijn@1597 175
adam@1609 176 /*
adam@1615 177 strftime() implementation from:
adam@1615 178 YUI 3.4.1 (build 4118)
adam@1615 179 Copyright 2011 Yahoo! Inc. All rights reserved.
adam@1615 180 Licensed under the BSD License.
adam@1615 181 http://yuilibrary.com/license/
adam@1615 182 */
adam@1609 183
adam@1615 184 var xPad=function (x, pad, r)
adam@1615 185 {
adam@1615 186 if(typeof r === "undefined")
adam@1615 187 {
adam@1615 188 r=10;
adam@1615 189 }
adam@1615 190 pad = pad.toString();
adam@1615 191 for( ; parseInt(x, 10)<r && r>1; r/=10) {
adam@1615 192 x = pad + x;
adam@1615 193 }
adam@1615 194 return x.toString();
adam@1615 195 };
adam@1609 196
adam@1615 197 var YDateEn = {
adam@1615 198 a: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
adam@1615 199 A: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
adam@1615 200 b: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
adam@1615 201 B: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
adam@1615 202 c: "%a %d %b %Y %T %Z",
adam@1615 203 p: ["AM", "PM"],
adam@1615 204 P: ["am", "pm"],
adam@1615 205 r: "%I:%M:%S %p",
adam@1615 206 x: "%d/%m/%y",
adam@1615 207 X: "%T"
adam@1615 208 };
adam@1609 209
adam@1615 210 var Dt = {
adam@1615 211 formats: {
adam@1615 212 a: function (d, l) { return l.a[d.getDay()]; },
adam@1615 213 A: function (d, l) { return l.A[d.getDay()]; },
adam@1615 214 b: function (d, l) { return l.b[d.getMonth()]; },
adam@1615 215 B: function (d, l) { return l.B[d.getMonth()]; },
adam@1615 216 C: function (d) { return xPad(parseInt(d.getFullYear()/100, 10), 0); },
adam@1615 217 d: ["getDate", "0"],
adam@1615 218 e: ["getDate", " "],
adam@1615 219 g: function (d) { return xPad(parseInt(Dt.formats.G(d)%100, 10), 0); },
adam@1615 220 G: function (d) {
adam@1615 221 var y = d.getFullYear();
adam@1615 222 var V = parseInt(Dt.formats.V(d), 10);
adam@1615 223 var W = parseInt(Dt.formats.W(d), 10);
phurst@1986 224
adam@1615 225 if(W > V) {
adam@1615 226 y++;
adam@1615 227 } else if(W===0 && V>=52) {
adam@1615 228 y--;
adam@1615 229 }
phurst@1986 230
adam@1615 231 return y;
adam@1615 232 },
adam@1615 233 H: ["getHours", "0"],
adam@1615 234 I: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, 0); },
adam@1615 235 j: function (d) {
adam@1615 236 var gmd_1 = new Date("" + d.getFullYear() + "/1/1 GMT");
adam@1615 237 var gmdate = new Date("" + d.getFullYear() + "/" + (d.getMonth()+1) + "/" + d.getDate() + " GMT");
adam@1615 238 var ms = gmdate - gmd_1;
adam@1615 239 var doy = parseInt(ms/60000/60/24, 10)+1;
adam@1615 240 return xPad(doy, 0, 100);
adam@1615 241 },
adam@1615 242 k: ["getHours", " "],
adam@1615 243 l: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, " "); },
adam@1615 244 m: function (d) { return xPad(d.getMonth()+1, 0); },
adam@1615 245 M: ["getMinutes", "0"],
adam@1615 246 p: function (d, l) { return l.p[d.getHours() >= 12 ? 1 : 0 ]; },
adam@1615 247 P: function (d, l) { return l.P[d.getHours() >= 12 ? 1 : 0 ]; },
adam@1615 248 s: function (d, l) { return parseInt(d.getTime()/1000, 10); },
adam@1615 249 S: ["getSeconds", "0"],
adam@1615 250 u: function (d) { var dow = d.getDay(); return dow===0?7:dow; },
adam@1615 251 U: function (d) {
adam@1615 252 var doy = parseInt(Dt.formats.j(d), 10);
adam@1615 253 var rdow = 6-d.getDay();
adam@1615 254 var woy = parseInt((doy+rdow)/7, 10);
adam@1615 255 return xPad(woy, 0);
adam@1615 256 },
adam@1615 257 V: function (d) {
adam@1615 258 var woy = parseInt(Dt.formats.W(d), 10);
adam@1615 259 var dow1_1 = (new Date("" + d.getFullYear() + "/1/1")).getDay();
adam@1615 260 var idow = woy + (dow1_1 > 4 || dow1_1 <= 1 ? 0 : 1);
adam@1615 261 if(idow === 53 && (new Date("" + d.getFullYear() + "/12/31")).getDay() < 4)
adam@1615 262 {
adam@1615 263 idow = 1;
adam@1615 264 }
adam@1615 265 else if(idow === 0)
adam@1615 266 {
adam@1615 267 idow = Dt.formats.V(new Date("" + (d.getFullYear()-1) + "/12/31"));
adam@1615 268 }
phurst@1986 269
adam@1615 270 return xPad(idow, 0);
adam@1615 271 },
adam@1615 272 w: "getDay",
adam@1615 273 W: function (d) {
adam@1615 274 var doy = parseInt(Dt.formats.j(d), 10);
adam@1615 275 var rdow = 7-Dt.formats.u(d);
adam@1615 276 var woy = parseInt((doy+rdow)/7, 10);
adam@1615 277 return xPad(woy, 0, 10);
adam@1615 278 },
adam@1615 279 y: function (d) { return xPad(d.getFullYear()%100, 0); },
adam@1615 280 Y: "getFullYear",
adam@1615 281 z: function (d) {
adam@1615 282 var o = d.getTimezoneOffset();
adam@1615 283 var H = xPad(parseInt(Math.abs(o/60), 10), 0);
adam@1615 284 var M = xPad(Math.abs(o%60), 0);
adam@1615 285 return (o>0?"-":"+") + H + M;
adam@1615 286 },
adam@1615 287 Z: function (d) {
adam@1615 288 var tz = d.toString().replace(/^.*:\d\d( GMT[+-]\d+)? \(?([A-Za-z ]+)\)?\d*$/, "$2").replace(/[a-z ]/g, "");
adam@1615 289 if(tz.length > 4) {
adam@1615 290 tz = Dt.formats.z(d);
adam@1615 291 }
adam@1615 292 return tz;
adam@1615 293 },
adam@1615 294 "%": function (d) { return "%"; }
adam@1615 295 },
adam@1615 296
adam@1615 297 aggregates: {
adam@1615 298 c: "locale",
adam@1615 299 D: "%m/%d/%y",
adam@1615 300 F: "%Y-%m-%d",
adam@1615 301 h: "%b",
adam@1615 302 n: "\n",
adam@1615 303 r: "%I:%M:%S %p",
adam@1615 304 R: "%H:%M",
adam@1615 305 t: "\t",
adam@1615 306 T: "%H:%M:%S",
adam@1615 307 x: "locale",
adam@1615 308 X: "locale"
adam@1615 309 },
adam@1615 310
adam@1615 311 format : function (oDate, format) {
adam@1615 312 var replace_aggs = function (m0, m1) {
adam@1615 313 var f = Dt.aggregates[m1];
adam@1615 314 return (f === "locale" ? YDateEn[m1] : f);
adam@1615 315 };
adam@1615 316
adam@1615 317 var replace_formats = function (m0, m1) {
adam@1615 318 var f = Dt.formats[m1];
adam@1615 319 switch(typeof f) {
adam@1615 320 case "string":
adam@1615 321 return oDate[f]();
adam@1615 322 case "function":
adam@1615 323 return f.call(oDate, oDate, YDateEn);
adam@1615 324 case "array":
adam@1615 325 case "object":
adam@1615 326 if(typeof(f[0]) === "string")
adam@1615 327 return xPad(oDate[f[0]](), f[1]);
adam@1615 328 default:
adam@1615 329 return m1;
adam@1615 330 }
adam@1615 331 };
adam@1615 332
adam@1615 333 while(format.match(/%[cDFhnrRtTxX]/)) {
adam@1615 334 format = format.replace(/%([cDFhnrRtTxX])/g, replace_aggs);
adam@1609 335 }
adam@1615 336
adam@1615 337 var str = format.replace(/%([aAbBCdegGHIjklmMpPsSuUVwWyYzZ%])/g, replace_formats);
adam@1615 338
adam@1615 339 replace_aggs = replace_formats = undefined;
adam@1615 340
adam@1615 341 return str;
adam@1615 342 }
adam@1609 343 };
adam@1609 344
adam@1615 345 // End of YUI code
adam@1609 346
adam@1609 347 function strftime(fmt, thisTime)
adam@1609 348 {
adam@1609 349 var thisDate = new Date();
adam@1622 350 thisDate.setTime(Math.floor(thisTime / 1000));
adam@1615 351 return Dt.format(thisDate, fmt);
phurst@1986 352 };
phurst@1986 353
phurst@1986 354 function fromDatetime(year, month, date, hour, minute, second) {
phurst@1986 355 return (new Date(year, month, date, hour, minute, second)).getTime() * 1000;
phurst@1986 356 };
phurst@1986 357
phurst@1986 358 function datetimeYear(t) {
phurst@1986 359 return (new Date(t / 1000)).getYear() + 1900;
phurst@1986 360 };
phurst@1986 361
phurst@1986 362 function datetimeMonth(t) {
phurst@1986 363 return (new Date(t / 1000)).getMonth();
phurst@1986 364 };
phurst@1986 365
phurst@1986 366 function datetimeDay(t) {
phurst@1986 367 return (new Date(t / 1000)).getDate();
phurst@1986 368 };
phurst@1986 369
phurst@1986 370 function datetimeHour(t) {
phurst@1986 371 return (new Date(t / 1000)).getHours();
phurst@1986 372 };
phurst@1986 373
phurst@1986 374 function datetimeMinute(t) {
phurst@1986 375 return (new Date(t / 1000)).getMinutes();
phurst@1986 376 };
phurst@1986 377
phurst@1986 378 function datetimeSecond(t) {
phurst@1986 379 return (new Date(t / 1000)).getSeconds();
phurst@1986 380 };
phurst@1986 381
phurst@1986 382 function datetimeDayOfWeek(t) {
phurst@1986 383 return (new Date(t / 1000)).getDay();
phurst@1986 384 };
adam@1609 385
adam@1487 386
adamc@729 387 // Error handling
adamc@729 388
adam@1625 389 function uw_debug(msg) {
adam@1625 390 try {
adam@1625 391 console.debug(msg);
adam@1625 392 } catch (e) {
adam@1625 393 alert("DEBUG: " + msg);
adam@1625 394 }
adam@1625 395
adam@1625 396 return 0;
adam@1625 397 }
adam@1625 398
adamc@729 399 function whine(msg) {
adamc@1260 400 alert(msg);
adamc@1260 401 throw msg;
adamc@729 402 }
adamc@729 403
adamc@810 404 function pf(loc) {
adamc@1260 405 throw ("Pattern match failure (" + loc + ")");
adamc@729 406 }
adamc@729 407
adam@1553 408 var lameDuck = false;
adam@1553 409
adamc@798 410 function runHandlers(kind, ls, arg) {
adam@1553 411 if (!lameDuck) {
adam@1553 412 if (ls == null)
adam@1553 413 alert(kind + ": " + arg);
adam@1553 414 for (; ls; ls = ls.next)
adam@1553 415 try {
adam@1890 416 exec({c:"a", f:{c:"a", f:ls.data, x:{c:"c", v:arg}}, x:{c:"c", v:null}});
adam@1553 417 } catch (v) { }
adam@1553 418 }
adamc@729 419 }
adamc@729 420
adamc@729 421 var errorHandlers = null;
adamc@729 422
adam@1890 423 function flift0(v) {
adam@1890 424 return {c:"c", v:v};
adam@1890 425 }
adam@1890 426
adamc@729 427 function onError(f) {
adam@1890 428 errorHandlers = cons(flift0(f), errorHandlers);
adamc@729 429 }
adamc@729 430
adamc@729 431 function er(s) {
adamc@1260 432 runHandlers("Error", errorHandlers, s);
adamc@1260 433 throw {uw_error: s};
adamc@729 434 }
adamc@729 435
adamc@729 436 var failHandlers = null;
adamc@729 437
adamc@729 438 function onFail(f) {
adam@1890 439 failHandlers = cons(flift0(f), failHandlers);
adamc@729 440 }
adamc@729 441
adamc@729 442 function doExn(v) {
adamc@1260 443 if (v == null || v.uw_error == null) {
adamc@1260 444 var s = (v == null ? "null" : v.message ? v.message : v.toString());
adamc@1260 445 if (v != null && v.fileName && v.lineNumber)
adamc@1260 446 s += " (" + v.fileName + ":" + v.lineNumber + ")";
adamc@1260 447 runHandlers("Fail", failHandlers, s);
adamc@1260 448 }
adamc@729 449 }
adamc@729 450
adamc@729 451 var disconnectHandlers = null;
adamc@729 452
adamc@976 453 function flift(f) {
kkallio@1484 454 return {c: "c", v:{env:cons(f,null), body:{c:"v", n:1}}};
adamc@976 455 }
adamc@976 456
adamc@729 457 function onDisconnect(f) {
adamc@1260 458 disconnectHandlers = cons(flift(f), disconnectHandlers);
adamc@729 459 }
adamc@729 460
adamc@729 461 function discon() {
adamc@1260 462 runHandlers("Disconnect", disconnectHandlers, null);
adamc@729 463 }
adamc@729 464
adamc@729 465 var connectHandlers = null;
adamc@729 466
adamc@729 467 function onConnectFail(f) {
adamc@1260 468 connectHandlers = cons(flift(f), connectHandlers);
adamc@729 469 }
adamc@729 470
adamc@729 471 function conn() {
adamc@1260 472 runHandlers("Connect", connectHandlers, null);
adamc@729 473 }
adamc@729 474
adamc@729 475 var serverHandlers = null;
adamc@729 476
adamc@729 477 function onServerError(f) {
adam@1890 478 serverHandlers = cons(flift0(f), serverHandlers);
adamc@729 479 }
adamc@729 480
adamc@729 481 function servErr(s) {
adamc@1260 482 window.setTimeout(function () { runHandlers("Server", serverHandlers, s); }, 0);
adamc@729 483 }
adamc@729 484
adam@1783 485 // Key and mouse events
adam@1555 486
adam@1555 487 var uw_event = null;
adam@1555 488
adam@1783 489 function uw_getEvent() {
adam@1783 490 return window.event ? window.event : uw_event;
adam@1555 491 }
adam@1555 492
adam@1783 493 function firstGood(x, y) {
adam@1783 494 if (x == undefined || x == 0)
adam@1783 495 return y;
adam@1783 496 else
adam@1783 497 return x;
adam@1783 498 }
adam@1783 499
adam@1783 500 function uw_mouseEvent() {
adam@1783 501 var ev = uw_getEvent();
adam@1783 502
adam@1783 503 return {_ScreenX : firstGood(ev.screenX, 0),
adam@1783 504 _ScreenY : firstGood(ev.screenY, 0),
adam@1783 505 _ClientX : firstGood(ev.clientX, 0),
adam@1783 506 _ClientY : firstGood(ev.clientY, 0),
adam@1783 507 _CtrlKey : firstGood(ev.ctrlKey, false),
adam@1783 508 _ShiftKey : firstGood(ev.shiftKey, false),
adam@1783 509 _AltKey : firstGood(ev.altKey, false),
adam@1783 510 _MetaKey : firstGood(ev.metaKey, false),
adam@1783 511 _Button : ev.button == 2 ? "Right" : ev.button == 1 ? "Middle" : "Left"};
adam@1783 512 }
adam@1783 513
adam@1783 514 function uw_keyEvent() {
adam@1783 515 var ev = uw_getEvent();
adam@1783 516
adam@1783 517 return {_KeyCode : firstGood(ev.keyCode, ev.which),
adam@1783 518 _CtrlKey : firstGood(ev.ctrlKey, false),
adam@1783 519 _ShiftKey : firstGood(ev.shiftKey, false),
adam@1783 520 _AltKey : firstGood(ev.altKey, false),
adam@1783 521 _MetaKey : firstGood(ev.metaKey, false)};
adam@1783 522 }
adam@1783 523
adam@1783 524
adam@1783 525
adam@1555 526 // Document events
adam@1555 527
adam@1555 528 function uw_handler(name, f) {
adam@1555 529 var old = document[name];
adam@1555 530 if (old == undefined)
adam@1783 531 document[name] = function(event) { uw_event = event; execF(execF(f, uw_mouseEvent())); };
adam@1555 532 else
adam@1783 533 document[name] = function(event) { uw_event = event; old(); execF(execF(f, uw_mouseEvent())); };
adam@1555 534 }
adam@1555 535
adam@1555 536 function uw_onClick(f) {
adam@1555 537 uw_handler("onclick", f);
adam@1555 538 }
adam@1555 539
adam@1555 540 function uw_onDblclick(f) {
adam@1555 541 uw_handler("ondblclick", f);
adam@1555 542 }
adam@1555 543
adam@1555 544 function uw_onMousedown(f) {
adam@1555 545 uw_handler("onmousedown", f);
adam@1555 546 }
adam@1555 547
adam@1791 548 function uw_onMousemove(f) {
adam@1791 549 uw_handler("onmousemove", f);
adam@1791 550 }
adam@1791 551
adam@1791 552 function uw_onMouseout(f) {
adam@1791 553 uw_handler("onmouseout", f);
adam@1791 554 }
adam@1791 555
adam@1791 556 function uw_onMouseover(f) {
adam@1791 557 uw_handler("onmouseover", f);
adam@1791 558 }
adam@1791 559
adam@1555 560 function uw_onMouseup(f) {
adam@1555 561 uw_handler("onmouseup", f);
adam@1555 562 }
adam@1555 563
adam@1555 564 function uw_keyHandler(name, f) {
adam@1555 565 var old = document[name];
adam@1555 566 if (old == undefined)
adam@1783 567 document[name] = function(event) { uw_event = event; execF(execF(f, uw_keyEvent())); };
adam@1555 568 else
adam@1783 569 document[name] = function(event) { uw_event = event; old(); execF(execF(f, uw_keyEvent())); };
adam@1555 570 }
adam@1555 571
adam@1555 572 function uw_onKeydown(f) {
adam@1555 573 uw_keyHandler("onkeydown", f);
adam@1555 574 }
adam@1555 575
adam@1555 576 function uw_onKeypress(f) {
adam@1555 577 uw_keyHandler("onkeypress", f);
adam@1555 578 }
adam@1555 579
adam@1555 580 function uw_onKeyup(f) {
adam@1555 581 uw_keyHandler("onkeyup", f);
adam@1555 582 }
adam@1555 583
adam@1559 584 // Cancelling of further event processing
adam@1559 585
adam@1559 586 function uw_preventDefault() {
adam@1559 587 var e = window.event ? window.event : uw_event;
adam@1559 588 e.returnValue = false;
adam@1559 589 if (e.preventDefault) e.preventDefault();
adam@1559 590 }
adam@1559 591
adam@1559 592 function uw_stopPropagation() {
adam@1559 593 var e = window.event ? window.event : uw_event;
adam@1559 594 e.cancelBubble = true;
adam@1559 595 if (e.stopPropagation) e.stopPropagation();
adam@1559 596 }
adamc@729 597
adamc@692 598 // Embedding closures in XML strings
adamc@692 599
adamc@693 600 function cs(f) {
adamc@1260 601 return {closure: f};
adamc@693 602 }
adamc@693 603
adamc@693 604 function isWeird(v) {
adamc@1260 605 return v.closure != null || v.cat1 != null;
adamc@693 606 }
adamc@693 607
adamc@692 608 function cat(s1, s2) {
adamc@1260 609 if (isWeird(s1) || isWeird(s2))
adamc@1260 610 return {cat1: s1, cat2: s2};
adamc@1260 611 else
adamc@1260 612 return s1 + s2;
adamc@692 613 }
adamc@692 614
adamc@692 615 var closures = [];
adamc@703 616 var freeClosures = null;
adamc@692 617
adamc@692 618 function newClosure(f) {
adamc@1260 619 var n;
adamc@1260 620 if (freeClosures == null) {
adamc@1260 621 n = closures.length;
adamc@1260 622 } else {
adamc@1260 623 n = freeClosures.data;
adamc@1260 624 freeClosures = freeClosures.next;
adamc@1260 625 }
adamc@1260 626 closures[n] = f;
adamc@1260 627 return n;
adamc@692 628 }
adamc@692 629
adamc@703 630 function freeClosure(n) {
adamc@1260 631 closures[n] = null;
adamc@1260 632 freeClosures = cons(n, freeClosures);
adamc@703 633 }
adamc@703 634
adamc@692 635 function cr(n) {
adamc@1260 636 return closures[n];
adamc@692 637 }
adamc@692 638
vshabanoff@1813 639 function flattenAcc(a, cls, tr) {
vshabanoff@1813 640 if (tr.cat1 != null) {
vshabanoff@1813 641 flattenAcc(a, cls, tr.cat1);
vshabanoff@1813 642 flattenAcc(a, cls, tr.cat2);
vshabanoff@1813 643 } else if (tr.closure != null) {
adamc@1260 644 var cl = newClosure(tr.closure);
adamc@1260 645 cls.v = cons(cl, cls.v);
vshabanoff@1813 646 a.push("cr(", cl.toString(), ")");
adamc@1260 647 } else
vshabanoff@1813 648 a.push(tr);
vshabanoff@1813 649 }
vshabanoff@1813 650
vshabanoff@1813 651 function flatten(cls, tr) {
vshabanoff@1813 652 var a = [];
vshabanoff@1813 653 flattenAcc(a, cls, tr);
vshabanoff@1813 654 return a.join("");
adamc@692 655 }
adamc@692 656
adamc@728 657 function flattenLocal(s) {
adamc@1260 658 var cls = {v : null};
adamc@1260 659 var r = flatten(cls, s);
adamc@1260 660 for (cl = cls.v; cl != null; cl = cl.next)
adamc@1260 661 freeClosure(cl.data);
adamc@1260 662 return r;
adamc@728 663 }
adamc@728 664
adamc@692 665
adamc@692 666 // Dynamic tree management
adamc@692 667
adamc@690 668 function populate(node) {
adamc@1260 669 var s = node.signal;
adamc@1260 670 var oldSources = node.sources;
adamc@1260 671 try {
adamc@1260 672 var sr = execF(s, null);
adamc@1260 673 var newSources = sr._sources;
adamc@690 674
adamc@1260 675 for (var sp = oldSources; sp; sp = sp.next)
adamc@1260 676 if (!member(sp.data, newSources))
adamc@1260 677 sp.data.dyns = remove(node, sp.data.dyns);
adamc@690 678
adamc@1260 679 for (var sp = newSources; sp; sp = sp.next)
adamc@1260 680 if (!member(sp.data, oldSources))
adamc@1260 681 sp.data.dyns = cons(node, sp.data.dyns);
adamc@690 682
adamc@1260 683 node.sources = newSources;
adamc@1260 684 node.recreate(sr._data);
adamc@1260 685 } catch (v) {
adamc@1260 686 doExn(v);
adamc@1260 687 }
adamc@579 688 }
adamc@574 689
adamc@580 690 function sc(v) {
adamc@1260 691 return {data : v, dyns : null};
adamc@580 692 }
adamc@580 693 function sv(s, v) {
adam@1491 694 if (s.data != v) {
adam@1491 695 s.data = v;
adamc@967 696
adam@1491 697 for (var ls = s.dyns; ls; ls = ls.next)
adam@1491 698 if (!ls.dead)
adam@1491 699 populate(ls.data);
adam@1491 700 }
adamc@580 701 }
adamc@601 702 function sg(s) {
adamc@1260 703 return s.data;
adamc@601 704 }
adamc@579 705
adamc@580 706 function ss(s) {
adamc@1260 707 return {env:cons(s, null), body:{c:"r", l:
adamc@1260 708 cons({n:"sources", v:{c:"c", v:cons(s, null)}},
adamc@1260 709 cons({n:"data", v:{c:"f", f:sg, a:cons({c:"v", n:1}, null)}}, null))}};
adamc@580 710 }
adamc@580 711 function sr(v) {
adamc@1260 712 return {env:null, body:{c:"c", v:{_sources : null, _data : v}}};
adamc@580 713 }
adamc@580 714 function sb(x,y) {
adamc@1260 715 return {env:cons(y,cons(x,null)),
adamc@1260 716 body:{c:"=",
adamc@1260 717 e1:{c:"a", f:{c:"v", n:2}, x:{c:"c", v:null}},
adamc@1260 718 e2:{c:"=",
adamc@1260 719 e1:{c:"a",
adamc@1260 720 f:{c:"a", f:{c:"v", n:2}, x:{c:".", r:{c:"v", n:0}, f:"data"}},
adamc@1260 721 x:{c:"c", v:null}},
adamc@1260 722 e2:{c:"r", l:cons(
adamc@1260 723 {n:"sources", v:{c:"f", f:union, a:cons({c:".", r:{c:"v", n:1}, f:"sources"},
adamc@1260 724 cons({c:".", r:{c:"v", n:0}, f:"sources"}, null))}},
adamc@1260 725 cons({n:"data", v:{c:".", r:{c:"v", n:0}, f:"data"}}, null))}}}};
adamc@580 726 }
adamc@841 727 function scur(s) {
adamc@1260 728 return execF(s, null)._data;
adamc@841 729 }
adamc@571 730
adamc@604 731 function lastParent() {
adamc@1260 732 var pos = document.body;
adamc@604 733
adamc@1260 734 while (pos.lastChild && pos.lastChild.nodeType == 1)
adamc@1260 735 pos = pos.lastChild;
adamc@600 736
adamc@1260 737 pos = pos.parentNode;
adamc@1039 738
adamc@1260 739 return pos;
adamc@600 740 }
adamc@600 741
adam@1803 742 var thisScript = null;
adam@1803 743
adamc@604 744 function addNode(node) {
adam@1678 745 if (thisScript) {
adam@1678 746 if (thisScript.parentNode)
adam@1678 747 thisScript.parentNode.replaceChild(node, thisScript);
adam@1678 748 } else
adamc@1260 749 lastParent().appendChild(node);
adamc@603 750 }
adamc@603 751
adam@1803 752 function runScripts(node) {
adam@1803 753 if (node.tagName == "SCRIPT") {
adam@1803 754 var savedScript = thisScript;
adam@1803 755 thisScript = node;
phurst@1986 756
adam@1803 757 try {
adam@1803 758 eval(thisScript.text);
adam@1803 759 } catch (v) {
adam@1803 760 doExn(v);
adam@1803 761 }
adam@1803 762 if (thisScript.parentNode)
adam@1803 763 thisScript.parentNode.removeChild(thisScript);
adamc@690 764
adam@1803 765 thisScript = savedScript;
adam@1803 766 } else if (node.getElementsByTagName) {
adamc@1260 767 var savedScript = thisScript;
adamc@603 768
adamc@1260 769 var scripts = node.getElementsByTagName("script"), scriptsCopy = [];
adamc@1260 770 var len = scripts.length;
adamc@1260 771 for (var i = 0; i < len; ++i)
adamc@1260 772 scriptsCopy[i] = scripts[i];
adamc@1260 773 for (var i = 0; i < len; ++i) {
adamc@1260 774 thisScript = scriptsCopy[i];
adamc@1039 775
adamc@1260 776 try {
adamc@1260 777 eval(thisScript.text);
adamc@1260 778 } catch (v) {
adamc@1260 779 doExn(v);
adamc@1260 780 }
adamc@1260 781 if (thisScript.parentNode)
adamc@1260 782 thisScript.parentNode.removeChild(thisScript);
adamc@1260 783 }
adamc@1260 784
adamc@1260 785 thisScript = savedScript;
adamc@729 786 }
adamc@603 787 }
adamc@603 788
adamc@603 789
adamc@692 790 // Dynamic tree entry points
adamc@692 791
adamc@967 792 function killScript(scr) {
adamc@1260 793 scr.dead = true;
adamc@1260 794 for (var ls = scr.sources; ls; ls = ls.next)
adamc@1260 795 ls.data.dyns = remove(scr, ls.data.dyns);
adamc@1260 796 for (var ls = scr.closures; ls; ls = ls.next)
adamc@1260 797 freeClosure(ls.data);
adamc@967 798 }
adamc@967 799
adam@1538 800 // Sometimes we wind up with tables that contain <script>s outside the single <tbody>.
adam@1538 801 // To avoid dealing with that case, we normalize by moving <script>s into <tbody>.
adam@1538 802 function normalizeTable(table) {
adam@1538 803 var orig = table;
adam@1538 804
adam@1538 805 var script, next;
adam@1538 806
adam@1803 807 while (table && table.tagName != "TABLE")
adam@1538 808 table = table.parentNode;
adam@1538 809
adam@1538 810 for (var tbody = table.firstChild; tbody; tbody = tbody.nextSibling) {
adam@1538 811 if (tbody.tagName == "TBODY") {
adam@1681 812 var firstChild = tbody.firstChild;
adam@1681 813
adam@1538 814 for (script = table.firstChild; script && script != tbody; script = next) {
adam@1538 815 next = script.nextSibling;
adam@1538 816
adam@1681 817 if (firstChild)
adam@1681 818 tbody.insertBefore(script, firstChild);
adam@1681 819 else
adam@1681 820 tbody.appendChild(script);
adam@1538 821 }
adam@1538 822
adam@1538 823 return;
adam@1538 824 }
adam@1538 825 }
adam@1538 826
adam@1538 827 var tbody = document.createElement("tbody");
adam@1538 828 for (script = table.firstChild; script; script = next) {
adam@1538 829 next = script.nextSibling;
rmbruijn@1597 830
adam@1681 831 tbody.appendChild(script);
adam@1538 832 }
adam@1538 833 table.appendChild(tbody);
adam@1538 834 }
adam@1538 835
adam@1803 836 var suspendScripts = false;
adam@1803 837
adamc@901 838 function dyn(pnode, s) {
adam@1803 839 if (suspendScripts)
adam@1803 840 return;
adam@1803 841
adamc@1260 842 var x = document.createElement("script");
adamc@1260 843 x.dead = false;
adamc@1260 844 x.signal = s;
adamc@1260 845 x.sources = null;
adamc@1260 846 x.closures = null;
adamc@899 847
adamc@1260 848 var firstChild = null;
adamc@899 849
adamc@1260 850 x.recreate = function(v) {
adamc@1260 851 for (var ls = x.closures; ls; ls = ls.next)
adamc@1260 852 freeClosure(ls.data);
adamc@945 853
adamc@946 854 var next;
adamc@1260 855 for (var child = firstChild; child && child != x; child = next) {
adamc@1260 856 next = child.nextSibling;
adamc@1260 857
adamc@1260 858 killScript(child);
adamc@1260 859 if (child.getElementsByTagName) {
adamc@1260 860 var arr = child.getElementsByTagName("script");
adamc@1260 861 for (var i = 0; i < arr.length; ++i)
adamc@1260 862 killScript(arr[i]);
adamc@1260 863 }
adamc@1260 864
adamc@1260 865 if (child.parentNode)
adamc@1260 866 child.parentNode.removeChild(child);
adamc@946 867 }
adamc@903 868
adamc@1260 869 var cls = {v : null};
adamc@1260 870 var html = flatten(cls, v);
adamc@1260 871 if (pnode != "table" && pnode != "tr")
adamc@1260 872 html = dynPrefix + html;
adamc@1260 873 x.closures = cls.v;
adamc@946 874
adamc@1260 875 if (pnode == "table") {
adam@1538 876 normalizeTable(x.parentNode);
adam@1538 877
adamc@1260 878 var dummy = document.createElement("body");
adam@1803 879 suspendScripts = true;
adam@1803 880 try {
adam@1803 881 dummy.innerHTML = "<table>" + html + "</table>";
adam@1803 882 } catch (e) {
adam@1803 883 suspendScripts = false;
adam@1803 884 throw e;
adam@1803 885 }
adam@1803 886
adamc@1260 887 var table = x.parentNode;
adamc@1260 888
adamc@1260 889 if (table) {
adamc@1260 890 firstChild = null;
adamc@1260 891 var tbody;
adamc@1260 892
adamc@1260 893 var arr = dummy.getElementsByTagName("tbody");
adamc@1260 894
adamc@1260 895 var tbody;
adamc@1260 896 if (arr.length > 0 && arr[0].parentNode == dummy.firstChild) {
adamc@1260 897 tbody = arr[0];
adamc@1260 898 var next;
adamc@1260 899 for (var node = dummy.firstChild.firstChild; node; node = next) {
adamc@1260 900 next = node.nextSibling;
adamc@1260 901
adamc@1260 902 if (node.tagName != "TBODY")
adamc@1260 903 tbody.appendChild(node);
adamc@1260 904 }
adamc@1260 905 } else
adamc@1260 906 tbody = dummy.firstChild;
adamc@1260 907
adamc@1260 908 var next;
adamc@1260 909 firstChild = document.createElement("script");
adamc@1260 910 table.insertBefore(firstChild, x);
adamc@1260 911 for (var node = tbody.firstChild; node; node = next) {
adamc@1260 912 next = node.nextSibling;
adamc@1260 913 table.insertBefore(node, x);
adam@1803 914 suspendScripts = false;
adam@1803 915 runScripts(node);
adam@1803 916 suspendScripts = true;
adamc@1260 917 }
adamc@1260 918 }
adam@1803 919
adam@1803 920 suspendScripts = false;
adamc@1260 921 } else if (pnode == "tr") {
adamc@1260 922 var dummy = document.createElement("body");
adam@1803 923 suspendScripts = true;
adam@1803 924 try {
adam@1803 925 dummy.innerHTML = "<table><tr>" + html + "</tr></table>";
adam@1803 926 } catch (e) {
adam@1803 927 suspendScripts = false;
adam@1803 928 throw e;
adam@1803 929 }
adam@1803 930
adamc@1260 931 var table = x.parentNode;
adamc@1260 932
adamc@1260 933 if (table) {
adamc@1260 934 var arr = dummy.getElementsByTagName("tr");
adamc@1260 935 firstChild = null;
adamc@1260 936 var tr;
adamc@1260 937 if (arr.length > 0 && table != null)
adamc@1260 938 tr = arr[0];
adamc@1260 939 else
adamc@1260 940 tr = dummy.firstChild;
adamc@1260 941
adamc@1260 942 var next;
adamc@1260 943 firstChild = document.createElement("script");
adamc@1260 944 table.insertBefore(firstChild, x);
adamc@1260 945 for (var node = tr.firstChild; node; node = next) {
adamc@1260 946 next = node.nextSibling;
adamc@1260 947 table.insertBefore(node, x);
adam@1803 948 suspendScripts = false;
adam@1803 949 runScripts(node);
adam@1803 950 suspendScripts = true;
adamc@1260 951 }
adam@1803 952 };
adam@1803 953
adam@1803 954 suspendScripts = false;
adamc@1260 955 } else {
adamc@1260 956 firstChild = document.createElement("span");
adam@1803 957
adam@1803 958 suspendScripts = true;
adam@1803 959 try {
adam@1803 960 firstChild.innerHTML = html;
adam@1803 961 if (x.parentNode)
adam@1803 962 x.parentNode.insertBefore(firstChild, x);
adam@1803 963 } catch (e) {
adam@1803 964 suspendScripts = false;
adam@1803 965 throw e;
adam@1803 966 }
adam@1803 967 suspendScripts = false;
adam@1802 968 runScripts(firstChild);
adamc@903 969 }
adamc@1260 970 };
adamc@899 971
adamc@1260 972 addNode(x);
adamc@1260 973 populate(x);
adamc@571 974 }
adamc@582 975
adam@1702 976 function setInnerHTML(node, html) {
adam@1702 977 var x;
adam@1702 978
adam@1702 979 if (node.previousSibling && node.previousSibling.closures != undefined) {
adam@1702 980 x = node.previousSibling;
adam@1702 981
adam@1702 982 for (var ls = x.closures; ls; ls = ls.next)
adam@1702 983 freeClosure(ls.data);
adam@1702 984
adam@1702 985 if (node.getElementsByTagName) {
adam@1702 986 var arr = node.getElementsByTagName("script");
adam@1702 987 for (var i = 0; i < arr.length; ++i)
adam@1702 988 killScript(arr[i]);
adam@1702 989 }
adam@1702 990 } else {
adam@1702 991 x = document.createElement("script");
adam@1702 992 x.dead = false;
adam@1702 993 x.sources = null;
adam@1702 994
adam@1702 995 if (node.parentNode)
adam@1702 996 node.parentNode.insertBefore(x, node);
adam@1702 997 else
adam@1702 998 whine("setInnerHTML: node is not already in the DOM tree");
adam@1702 999 }
adam@1702 1000
adam@1702 1001 var cls = {v : null};
adam@1702 1002 var html = flatten(cls, html);
adam@1702 1003 x.closures = cls.v;
adam@1803 1004 suspendScripts = true;
adam@1702 1005 node.innerHTML = html;
adam@1803 1006 suspendScripts = false;
adam@1702 1007 runScripts(node);
adam@1702 1008 }
adam@1702 1009
adam@1792 1010 var maySuspend = true;
adam@1792 1011
adam@1786 1012 function active(s) {
adam@1803 1013 if (suspendScripts)
adam@1803 1014 return;
adam@1803 1015
adam@1792 1016 var ms = maySuspend;
adam@1792 1017 maySuspend = false;
adam@1792 1018 try {
adam@1792 1019 var html = execF(s);
adam@1792 1020 } catch (e) {
adam@1792 1021 maySuspend = ms;
adam@1792 1022 throw e;
adam@1792 1023 }
adam@1792 1024 maySuspend = ms;
adam@2002 1025 if (html != "") {
adam@2002 1026 var span = document.createElement("span");
adam@2002 1027 addNode(span);
adam@2002 1028 setInnerHTML(span, html);
adam@2002 1029 }
adam@1786 1030 }
adam@1786 1031
adam@1463 1032 function input(x, s, recreate, type, name) {
adam@1463 1033 if (name) x.name = name;
adamc@1260 1034 if (type) x.type = type;
adamc@1260 1035 x.dead = false;
adamc@1260 1036 x.signal = ss(s);
adamc@1260 1037 x.sources = null;
adamc@1260 1038 x.recreate = recreate(x);
adamc@1260 1039 addNode(x);
adamc@1260 1040 populate(x);
adamc@816 1041
adamc@1260 1042 return x;
adamc@816 1043 }
adamc@816 1044
adam@2079 1045 function inpt(type, s, name) {
adam@1803 1046 if (suspendScripts)
adam@1803 1047 return;
adam@1803 1048
adamc@1260 1049 var x = input(document.createElement("input"), s,
adam@2079 1050 function(x) { return function(v) { if (x.value != v) x.value = v; }; }, type, name);
adamc@1260 1051 x.value = s.data;
adam@1491 1052 x.onkeyup = x.oninput = x.onchange = x.onpropertychange = function() { sv(s, x.value) };
adamc@816 1053
adamc@1260 1054 return x;
adamc@816 1055 }
adamc@816 1056
adam@2079 1057 function inp(s, name) {
adam@2079 1058 return inpt("text", s, name);
adam@2079 1059 }
adam@2079 1060
ziv@2055 1061 function password(s, name) {
adam@2079 1062 return inpt("password", s, name);
adam@2079 1063 }
ziv@2055 1064
adam@2079 1065 function email(s, name) {
adam@2079 1066 return inpt("email", s, name);
adam@2079 1067 }
ziv@2055 1068
adam@2079 1069 function search(s, name) {
adam@2079 1070 return inpt("search", s, name);
adam@2079 1071 }
adam@2079 1072
adam@2079 1073 function url(s, name) {
adam@2079 1074 return inpt("url", s, name);
adam@2079 1075 }
adam@2079 1076
adam@2079 1077 function tel(s, name) {
adam@2079 1078 return inpt("tel", s, name);
adam@2079 1079 }
adam@2079 1080
adam@2079 1081 function color(s, name) {
adam@2079 1082 return inpt("color", s, name);
ziv@2055 1083 }
ziv@2055 1084
adam@2080 1085 function number(s, name) {
adam@2080 1086 return inpt("number", s, name);
adam@2080 1087 }
adam@2080 1088
adam@2080 1089 function range(s, name) {
adam@2080 1090 return inpt("range", s, name);
adam@2080 1091 }
adam@2080 1092
adam@2080 1093 function date(s, name) {
adam@2080 1094 return inpt("date", s, name);
adam@2080 1095 }
adam@2080 1096
adam@2080 1097 function datetime(s, name) {
adam@2080 1098 return inpt("datetime", s, name);
adam@2080 1099 }
adam@2080 1100
adam@2080 1101 function datetime_local(s, name) {
adam@2080 1102 return inpt("datetime-local", s, name);
adam@2080 1103 }
adam@2080 1104
adam@2080 1105 function month(s, name) {
adam@2080 1106 return inpt("month", s, name);
adam@2080 1107 }
adam@2080 1108
adam@2080 1109 function week(s, name) {
adam@2080 1110 return inpt("week", s, name);
adam@2080 1111 }
adam@2080 1112
adam@2080 1113 function time(s, name) {
adam@2080 1114 return inpt("time", s, name);
adam@2080 1115 }
adam@2080 1116
adam@2080 1117
adam@1479 1118 function selectValue(x) {
adam@1479 1119 if (x.options.length == 0)
adam@1479 1120 return "";
adam@1479 1121 else
adam@1479 1122 return x.options[x.selectedIndex].value;
adam@1479 1123 }
adam@1479 1124
adam@1479 1125 function setSelectValue(x, v) {
adam@1479 1126 for (var i = 0; i < x.options.length; ++i) {
adam@1479 1127 if(x.options[i].value == v) {
adam@1479 1128 x.selectedIndex = i;
adam@1479 1129 return;
adam@1479 1130 }
adam@1479 1131 }
adam@1479 1132 }
adam@1479 1133
adamc@816 1134 function sel(s, content) {
adam@1803 1135 if (suspendScripts)
adam@1803 1136 return;
adam@1803 1137
adamc@1260 1138 var dummy = document.createElement("span");
adamc@1260 1139 dummy.innerHTML = "<select>" + content + "</select>";
adam@1479 1140 var x = input(dummy.firstChild, s, function(x) { return function(v) { if (selectValue(x) != v) setSelectValue(x, v); }; });
adam@1479 1141
adam@1479 1142 for (var i = 0; i < x.options.length; ++i) {
adam@1479 1143 if (x.options[i].value == "")
adam@1479 1144 x.options[i].value = x.options[i].text;
adam@1479 1145 else
adam@1479 1146 x.options[i].value = x.options[i].value.substring(1);
adam@1479 1147 }
adam@1479 1148
adam@1479 1149 setSelectValue(x, s.data);
adam@1479 1150 if (selectValue(x) != s.data)
adam@1479 1151 sv(s, selectValue(x));
adam@1479 1152 x.onchange = function() { sv(s, selectValue(x)) };
adamc@797 1153
adamc@1260 1154 return x;
adamc@598 1155 }
adamc@598 1156
adamc@817 1157 function chk(s) {
adam@1803 1158 if (suspendScripts)
adam@1803 1159 return;
adam@1803 1160
adamc@1260 1161 var x = input(document.createElement("input"), s,
adamc@1260 1162 function(x) { return function(v) { if (x.checked != v) x.checked = v; }; }, "checkbox");
adamc@1260 1163 x.defaultChecked = x.checked = s.data;
adam@1610 1164 x.onclick = x.onkeyup = x.oninput = x.onchange = x.onpropertychange = function() { sv(s, x.checked) };
adamc@817 1165
adamc@1260 1166 return x;
adamc@817 1167 }
adamc@817 1168
adamc@1099 1169 function tbx(s) {
adam@1803 1170 if (suspendScripts)
adam@1803 1171 return;
adam@1803 1172
adamc@1260 1173 var x = input(document.createElement("textarea"), s,
adam@1781 1174 function(x) { return function(v) { if (x.value != v) x.value = v; }; });
adamc@1260 1175 x.innerHTML = s.data;
adam@1491 1176 x.onkeyup = x.oninput = x.onchange = x.onpropertychange = function() { sv(s, x.value) };
adamc@1099 1177
adamc@1260 1178 return x;
adamc@1099 1179 }
adamc@1099 1180
adam@2012 1181 function dynClass(pnode, html, s_class, s_style) {
adam@1803 1182 if (suspendScripts)
adam@1803 1183 return;
adam@1803 1184
adam@1643 1185 var htmlCls = {v : null};
adam@1643 1186 html = flatten(htmlCls, html);
adam@1643 1187 htmlCls = htmlCls.v;
adam@1643 1188
adam@2012 1189 var dummy = document.createElement(pnode);
adam@1803 1190 suspendScripts = true;
adam@1643 1191 dummy.innerHTML = html;
adam@1803 1192 suspendScripts = false;
adam@1643 1193 var html = dummy.firstChild;
adam@1643 1194 dummy.removeChild(html);
adam@1643 1195 addNode(html);
adam@1792 1196 runScripts(html);
adam@1643 1197
adam@1751 1198 if (s_class) {
adam@1751 1199 var x = document.createElement("script");
adam@1751 1200 x.dead = false;
adam@1751 1201 x.signal = s_class;
adam@1751 1202 x.sources = null;
adam@1751 1203 x.closures = htmlCls;
phurst@1986 1204
adam@1751 1205 x.recreate = function(v) {
adam@1751 1206 for (var ls = x.closures; ls != htmlCls; ls = ls.next)
adam@1751 1207 freeClosure(ls.data);
adam@1643 1208
adam@1751 1209 var cls = {v : null};
adam@1751 1210 html.className = flatten(cls, v);
adam@1751 1211 x.closures = concat(cls.v, htmlCls);
adam@1751 1212 }
adam@1643 1213
vshabanoff@1811 1214 html.appendChild(x);
adam@1751 1215 populate(x);
adam@1751 1216 }
adam@1751 1217
adam@1751 1218 if (s_style) {
vshabanoff@1811 1219 var htmlCls2 = s_class ? null : htmlCls;
adam@2012 1220 var y = document.createElement("script");
adam@2012 1221 y.dead = false;
adam@2012 1222 y.signal = s_style;
adam@2012 1223 y.sources = null;
adam@2012 1224 y.closures = htmlCls2;
phurst@1986 1225
adam@2012 1226 y.recreate = function(v) {
adam@2012 1227 for (var ls = y.closures; ls != htmlCls2; ls = ls.next)
adam@1751 1228 freeClosure(ls.data);
adam@1751 1229
adam@1751 1230 var cls = {v : null};
adam@1751 1231 html.style.cssText = flatten(cls, v);
adam@2012 1232 y.closures = concat(cls.v, htmlCls2);
adam@1751 1233 }
adam@1751 1234
adam@2012 1235 html.appendChild(y);
adam@2012 1236 populate(y);
adam@1751 1237 }
adam@1643 1238 }
adam@1643 1239
adamc@800 1240 function addOnChange(x, f) {
adamc@1260 1241 var old = x.onchange;
adam@1290 1242 if (old == null)
adam@1290 1243 x.onchange = f;
adam@1290 1244 else
adam@1290 1245 x.onchange = function() { old(); f(); };
adam@1290 1246 }
adam@1290 1247
adam@1290 1248 function addOnKeyUp(x, f) {
adam@1290 1249 var old = x.onkeyup;
adam@1290 1250 if (old == null)
adam@1290 1251 x.onkeyup = f;
adam@1290 1252 else
adam@1290 1253 x.onkeyup = function(x) { old(x); f(x); };
adamc@800 1254 }
adamc@800 1255
adamc@692 1256
adamc@692 1257 // Basic string operations
adamc@692 1258
adamc@597 1259 function eh(x) {
adamc@1260 1260 if (x == null)
adamc@1260 1261 return "NULL";
adamc@1260 1262 else
adamc@1260 1263 return x.split("&").join("&amp;").split("<").join("&lt;").split(">").join("&gt;");
adamc@597 1264 }
adamc@597 1265
adamc@582 1266 function ts(x) { return x.toString() }
adamc@586 1267 function bs(b) { return (b ? "True" : "False") }
adam@2097 1268 function s2b(s) { return s == "True" ? true : s == "False" ? false : null; }
adam@2097 1269 function s2be(s) { return s == "True" ? true : s == "False" ? false : er("Illegal Boolean " ^ s); }
adamc@586 1270
adamc@1057 1271 function id(x) { return x; }
adamc@1038 1272 function sub(s, i) { return s.charAt(i); }
adamc@828 1273 function suf(s, i) { return s.substring(i); }
adamc@828 1274 function slen(s) { return s.length; }
adamc@829 1275 function sidx(s, ch) {
adamc@1260 1276 var r = s.indexOf(ch);
adamc@1260 1277 if (r == -1)
adamc@1260 1278 return null;
adamc@1260 1279 else
adamc@1260 1280 return r;
adamc@829 1281 }
dukhovni@2045 1282 function ssidx(h, n) {
dukhovni@2045 1283 var r = h.indexOf(n);
dukhovni@2045 1284 if (r == -1)
dukhovni@2045 1285 return null;
dukhovni@2045 1286 else
dukhovni@2045 1287 return r;
dukhovni@2045 1288 }
adamc@831 1289 function sspn(s, chs) {
adamc@1260 1290 for (var i = 0; i < s.length; ++i)
adamc@1260 1291 if (chs.indexOf(s.charAt(i)) != -1)
adamc@1260 1292 return i;
adamc@831 1293
adam@1793 1294 return s.length;
adamc@831 1295 }
adamc@829 1296 function schr(s, ch) {
adamc@1260 1297 var r = s.indexOf(ch);
adamc@1260 1298 if (r == -1)
adamc@1260 1299 return null;
adamc@1260 1300 else
adamc@1260 1301 return s.substring(r);
adamc@829 1302 }
adamc@829 1303 function ssub(s, start, len) {
adamc@1260 1304 return s.substring(start, start+len);
adamc@829 1305 }
adam@1624 1306 function strlenGe(s, len) {
adam@1624 1307 return s.length >= len;
adam@1624 1308 }
adamc@821 1309
adam@1621 1310 function trimZeroes(s) {
adam@1621 1311 for (var i = 0; i < s.length; ++i)
adam@1632 1312 if (s.charAt(i) != '0') {
adam@1621 1313 if (i > 0)
adam@1621 1314 return s.substring(i);
adam@1621 1315 else
adam@1621 1316 return s;
adam@1621 1317 }
adam@1621 1318
adam@1631 1319 if (s.length == 0)
adam@1621 1320 return s;
adam@1621 1321 else
adam@1631 1322 return "0";
adam@1621 1323 }
adam@1621 1324
adamc@649 1325 function pi(s) {
adam@1631 1326 var st = trimZeroes(s);
adam@1631 1327 var r = parseInt(st);
adam@1631 1328 if (r.toString() == st)
adamc@1260 1329 return r;
adamc@1260 1330 else
adamc@1260 1331 er("Can't parse int: " + s);
adamc@649 1332 }
adamc@649 1333
adamc@649 1334 function pfl(s) {
adamc@1260 1335 var r = parseFloat(s);
adamc@1260 1336 if (r.toString() == s)
adamc@1260 1337 return r;
adamc@1260 1338 else
adamc@1260 1339 er("Can't parse float: " + s);
adamc@649 1340 }
adamc@649 1341
adamc@838 1342 function pio(s) {
adam@1631 1343 var st = trimZeroes(s);
adam@1631 1344 var r = parseInt(st);
adam@1631 1345 if (r.toString() == st)
adamc@1260 1346 return r;
adamc@1260 1347 else
adamc@1260 1348 return null;
adamc@838 1349 }
adamc@838 1350
adamc@838 1351 function pflo(s) {
adamc@1260 1352 var r = parseFloat(s);
adamc@1260 1353 if (r.toString() == s)
adamc@1260 1354 return r;
adamc@1260 1355 else
adamc@1260 1356 return null;
adamc@838 1357 }
adamc@838 1358
adam@1620 1359 function parseSource(s1, s2) {
adam@1620 1360 return eval("s" + s1 + "_" + s2);
adam@1620 1361 }
adam@1620 1362
adamc@692 1363 function uf(s) {
adamc@1260 1364 if (s.length == 0)
adamc@1260 1365 return "_";
vshabanoff@1813 1366 s = s.replace(/\./g, ".2E");
vshabanoff@1813 1367 return (s.charAt(0) == '_' ? "_" : "") + encodeURIComponent(s).replace(/%/g, ".");
adamc@691 1368 }
adamc@691 1369
adamc@692 1370 function uu(s) {
adamc@1260 1371 if (s.length > 0 && s.charAt(0) == '_') {
adamc@1260 1372 s = s.substring(1);
adamc@1260 1373 } else if (s.length >= 3 && (s.charAt(0) == '%' || s.charAt(0) == '.')
adamc@1260 1374 && s.charAt(1) == '5' && (s.charAt(2) == 'f' || s.charAt(2) == 'F'))
adamc@1260 1375 s = s.substring(3);
vshabanoff@1813 1376 s = s.replace(/\+/g, " ");
vshabanoff@1813 1377 s = s.replace(/\./g, "%");
adamc@1260 1378 return decodeURIComponent(s);
adamc@905 1379 }
adamc@905 1380
adamc@1108 1381 function atr(s) {
vshabanoff@1813 1382 return s.replace(/\"/g, "&quot;").replace(/&/g, "&amp;")
vshabanoff@1813 1383 }
adamc@1108 1384
adamc@912 1385 function ub(b) {
adamc@1260 1386 return b ? "1" : "0";
adamc@912 1387 }
adamc@912 1388
adamc@905 1389 function uul(getToken, getData) {
adamc@1260 1390 var tok = getToken();
adamc@1260 1391 if (tok == "Nil") {
adamc@1260 1392 return null;
adamc@1260 1393 } else if (tok == "Cons") {
adamc@1260 1394 var d = getData();
adamc@1260 1395 var l = uul(getToken, getData);
adamc@1260 1396 return {_1:d, _2:l};
adamc@1260 1397 } else
adamc@1260 1398 whine("Can't unmarshal list (" + tok + ")");
adamc@692 1399 }
adamc@692 1400
adamc@961 1401 function strcmp(str1, str2) {
adamc@1260 1402 return ((str1 == str2) ? 0 : ((str1 > str2) ? 1 : -1));
adamc@961 1403 }
adamc@692 1404
adamc@603 1405
adamc@692 1406 // Remote calls
adamc@609 1407
adamc@703 1408 var client_id = null;
adamc@668 1409 var client_pass = 0;
adamc@668 1410 var url_prefix = "/";
adamc@673 1411 var timeout = 60;
adam@1552 1412 var isPost = false;
adamc@668 1413
adamc@668 1414 function getXHR(uri)
adamc@609 1415 {
adamc@609 1416 try {
adamc@1260 1417 return new XMLHttpRequest();
adamc@609 1418 } catch (e) {
adamc@1260 1419 try {
adamc@1260 1420 return new ActiveXObject("Msxml2.XMLHTTP");
adamc@1260 1421 } catch (e) {
adamc@1260 1422 try {
adamc@1260 1423 return new ActiveXObject("Microsoft.XMLHTTP");
adamc@1260 1424 } catch (e) {
adamc@1260 1425 whine("Your browser doesn't seem to support AJAX.");
adamc@1260 1426 }
adamc@1260 1427 }
adamc@609 1428 }
adamc@609 1429 }
adamc@609 1430
adamc@736 1431 var sig = null;
adamc@736 1432
adamc@1042 1433 var unloading = false, inFlight = null;
adamc@1042 1434
adamc@1042 1435 function unload() {
adamc@1260 1436 for (; inFlight; inFlight = inFlight.next) {
adamc@1260 1437 inFlight.data.abort();
adamc@1260 1438 }
adamc@1042 1439 }
adamc@1042 1440
adam@1691 1441 function requestUri(xhr, uri, needsSig, isRpc) {
adam@1691 1442 var extraData = null;
adam@1691 1443
adam@1691 1444 if (isRpc && uri.length > 2000) {
adam@1691 1445 extraData = uri.substring(2000);
adam@1691 1446 uri = uri.substring(0, 2000);
adam@1691 1447 }
adam@1691 1448
vshabanoff@1763 1449 xhr.open("POST", uri, !unloading);
adamc@1260 1450 xhr.setRequestHeader("Content-type", "text/plain");
adamc@668 1451
adamc@1260 1452 if (client_id != null) {
adamc@1260 1453 xhr.setRequestHeader("UrWeb-Client", client_id.toString());
adamc@1260 1454 xhr.setRequestHeader("UrWeb-Pass", client_pass.toString());
adamc@1260 1455 }
adamc@668 1456
adamc@1260 1457 if (needsSig) {
adamc@1260 1458 if (sig == null)
adamc@1260 1459 whine("Missing cookie signature!");
adamc@736 1460
adamc@1260 1461 xhr.setRequestHeader("UrWeb-Sig", sig);
adamc@1260 1462 }
adamc@736 1463
adamc@1260 1464 inFlight = cons(xhr, inFlight);
adam@1691 1465 xhr.send(extraData);
adamc@668 1466 }
adamc@668 1467
adamc@1042 1468 function xhrFinished(xhr) {
adamc@1260 1469 xhr.abort();
adamc@1260 1470 inFlight = remove(xhr, inFlight);
adamc@1042 1471 }
adamc@1042 1472
adamc@1111 1473 function unurlify(parse, s) {
adamc@1260 1474 return parse(s);
adamc@1111 1475 }
adamc@1111 1476
adam@1385 1477 function redirect(s) {
adam@1385 1478 window.location = s;
adam@1385 1479 }
adam@1385 1480
adam@1848 1481 function makeSome(isN, v) {
adam@1848 1482 if (isN)
adam@1848 1483 return {v: v};
adam@1848 1484 else
adam@1848 1485 return v;
adam@1848 1486 }
adam@1848 1487
adam@1848 1488 function rc(prefix, uri, parse, k, needsSig, isN) {
adam@1792 1489 if (!maySuspend)
adam@1794 1490 er("May not 'rpc' in main thread of 'code' for <active>");
adam@1792 1491
adamc@1260 1492 uri = cat(prefix, uri);
adamc@1260 1493 uri = flattenLocal(uri);
adamc@1260 1494 var xhr = getXHR();
adamc@609 1495
adamc@1260 1496 xhr.onreadystatechange = function() {
adamc@1260 1497 if (xhr.readyState == 4) {
adamc@1260 1498 var isok = false;
adamc@612 1499
adamc@1260 1500 try {
adamc@1260 1501 if (xhr.status == 200)
adamc@1260 1502 isok = true;
adamc@1260 1503 } catch (e) { }
adamc@612 1504
adamc@1260 1505 if (isok) {
adam@1446 1506 var lines = xhr.responseText.split("\n");
adam@1848 1507 if (lines.length != 2) {
adam@1848 1508 if (isN == null)
adam@1848 1509 whine("Bad RPC response lines");
adam@1848 1510 else
adam@1848 1511 k(null);
adam@1848 1512 } else {
adam@1848 1513 eval(lines[0]);
adam@1446 1514
adam@1848 1515 try {
adam@1848 1516 var v = parse(lines[1]);
adam@1848 1517 try {
adam@1848 1518 k(makeSome(isN, v));
adam@1848 1519 } catch (v) {
adam@1848 1520 doExn(v);
adam@1848 1521 }
adam@1848 1522 } catch (v) {
adam@1848 1523 k(null);
adam@1848 1524 }
adamc@1260 1525 }
adamc@1260 1526 } else {
adam@1848 1527 if (isN == null)
adam@1848 1528 conn();
adam@1848 1529 else
adam@1848 1530 k(null);
adamc@1260 1531 }
adamc@1260 1532
adamc@1260 1533 xhrFinished(xhr);
adamc@729 1534 }
adamc@1260 1535 };
adamc@1042 1536
adam@1691 1537 requestUri(xhr, uri, needsSig, true);
adamc@609 1538 }
adamc@667 1539
adamc@667 1540 function path_join(s1, s2) {
adamc@1260 1541 if (s1.length > 0 && s1.charAt(s1.length-1) == '/')
adamc@1260 1542 return s1 + s2;
adamc@1260 1543 else
adamc@1260 1544 return s1 + "/" + s2;
adamc@667 1545 }
adamc@667 1546
adamc@670 1547 var channels = [];
adamc@670 1548
adamc@670 1549 function newQueue() {
adamc@1260 1550 return { front : null, back : null };
adamc@670 1551 }
adamc@670 1552 function enqueue(q, v) {
adamc@1260 1553 if (q.front == null) {
adamc@1260 1554 q.front = cons(v, null);
adamc@1260 1555 q.back = q.front;
adamc@1260 1556 } else {
adamc@1260 1557 var node = cons(v, null);
adamc@1260 1558 q.back.next = node;
adamc@1260 1559 q.back = node;
adamc@1260 1560 }
adamc@670 1561 }
adamc@670 1562 function dequeue(q) {
adamc@670 1563 if (q.front == null)
adamc@1260 1564 return null;
adamc@1260 1565 else {
adamc@1260 1566 var r = q.front.data;
adamc@1260 1567 q.front = q.front.next;
adamc@1260 1568 if (q.front == null)
adamc@1260 1569 q.back = null;
adamc@1260 1570 return r;
adamc@1260 1571 }
adamc@670 1572 }
adamc@670 1573
adamc@670 1574 function newChannel() {
adamc@1260 1575 return { msgs : newQueue(), listeners : newQueue() };
adamc@670 1576 }
adamc@670 1577
adamc@667 1578 function listener() {
adamc@1260 1579 var uri = path_join(url_prefix, ".msgs");
adamc@1260 1580 var xhr = getXHR();
adamc@1260 1581 var tid, orsc, onTimeout;
adamc@673 1582
adamc@1260 1583 var connect = function () {
adamc@1260 1584 xhr.onreadystatechange = orsc;
adamc@1260 1585 tid = window.setTimeout(onTimeout, timeout * 500);
adam@1691 1586 requestUri(xhr, uri, false, false);
adamc@1260 1587 }
adamc@673 1588
adamc@1260 1589 orsc = function() {
adamc@1260 1590 if (xhr.readyState == 4) {
adamc@1260 1591 window.clearTimeout(tid);
adamc@673 1592
adamc@1260 1593 var isok = false;
adamc@667 1594
adamc@1260 1595 try {
adamc@1260 1596 if (xhr.status == 200)
adamc@1260 1597 isok = true;
adamc@1260 1598 } catch (e) { }
adamc@667 1599
adamc@1260 1600 if (isok) {
adam@1447 1601 var text = xhr.responseText;
adamc@1260 1602 if (text == "")
adamc@1260 1603 return;
adamc@1260 1604 var lines = text.split("\n");
adamc@889 1605
adam@1552 1606 if (lines.length == 1 && lines[0] == "R") {
adam@1553 1607 lameDuck = true;
adam@1553 1608
adam@1552 1609 if (isPost)
adam@1552 1610 history.back();
adam@1552 1611 else
adam@1552 1612 location.reload();
adam@1552 1613
adam@1552 1614 return;
adam@1552 1615 }
adam@1552 1616
adamc@1260 1617 if (lines.length < 2) {
adamc@1260 1618 discon();
adamc@1260 1619 return;
adamc@1260 1620 }
adamc@1260 1621
adam@1447 1622 var messageReader = function(i) {
adam@1447 1623 if (i+1 >= lines.length) {
adam@1447 1624 xhrFinished(xhr);
adam@1447 1625 connect();
adam@1447 1626 }
adam@1447 1627 else {
adam@1447 1628 var chn = lines[i];
adam@1447 1629 var msg = lines[i+1];
adamc@1260 1630
adam@1447 1631 if (chn == "E") {
adam@1447 1632 eval(msg);
adam@1447 1633 window.setTimeout(function() { messageReader(i+2); }, 0);
adam@1447 1634 } else {
adam@1447 1635 if (chn < 0)
adam@1447 1636 whine("Out-of-bounds channel in message from remote server");
adamc@1260 1637
adam@1447 1638 var ch;
adamc@1260 1639
adam@1447 1640 if (chn >= channels.length || channels[chn] == null) {
adam@1447 1641 ch = newChannel();
adam@1447 1642 channels[chn] = ch;
adam@1447 1643 } else
adam@1447 1644 ch = channels[chn];
adamc@1260 1645
adam@1447 1646 var listener = dequeue(ch.listeners);
adam@1447 1647 if (listener == null) {
adam@1447 1648 enqueue(ch.msgs, msg);
adam@1447 1649 } else {
adam@1447 1650 try {
adam@1447 1651 listener(msg);
adam@1447 1652 } catch (v) {
adam@1447 1653 doExn(v);
adam@1447 1654 }
adam@1447 1655 }
adam@1447 1656
adam@1447 1657 messageReader(i+2);
adamc@1260 1658 }
adamc@1260 1659 }
adamc@1260 1660 }
adamc@1260 1661
adam@1447 1662 messageReader(0);
adamc@1260 1663 }
adamc@1260 1664 else {
adamc@1260 1665 try {
adamc@1260 1666 if (xhr.status != 0)
adamc@1260 1667 servErr("Error querying remote server for messages: " + xhr.status);
adamc@1260 1668 } catch (e) { }
adamc@1260 1669 }
adamc@729 1670 }
adamc@1260 1671 };
adamc@669 1672
adamc@1260 1673 onTimeout = function() {
adamc@1260 1674 xhrFinished(xhr);
adamc@1260 1675 connect();
adamc@1260 1676 };
adamc@670 1677
adamc@673 1678 connect();
adamc@667 1679 }
adamc@670 1680
adamc@670 1681 function rv(chn, parse, k) {
adam@1792 1682 if (!maySuspend)
adam@1794 1683 er("May not 'recv' in main thread of 'code' for <active>");
adam@1792 1684
adamc@1260 1685 if (chn == null)
adam@1942 1686 er("Client-side code tried to recv() from a channel belonging to a different page view.");
adamc@682 1687
adamc@1260 1688 if (chn < 0)
adamc@1260 1689 whine("Out-of-bounds channel receive");
adamc@670 1690
adamc@1260 1691 var ch;
adamc@670 1692
adamc@1260 1693 if (chn >= channels.length || channels[chn] == null) {
adamc@1260 1694 ch = newChannel();
adamc@1260 1695 channels[chn] = ch;
adamc@1260 1696 } else
adamc@1260 1697 ch = channels[chn];
adamc@670 1698
adamc@1260 1699 var msg = dequeue(ch.msgs);
adamc@1260 1700 if (msg == null) {
adamc@1260 1701 enqueue(ch.listeners, function(msg) { k(parse(msg)); });
adamc@1260 1702 } else {
adamc@1260 1703 try {
adamc@1260 1704 k(parse(msg));
adamc@1260 1705 } catch (v) {
adamc@1260 1706 doExn(v);
adamc@1260 1707 }
adamc@728 1708 }
adamc@670 1709 }
adamc@693 1710
adamc@978 1711 function sl(ms, k) {
adam@1792 1712 if (!maySuspend)
adam@1794 1713 er("May not 'sleep' in main thread of 'code' for <active>");
adam@1792 1714
adamc@1260 1715 window.setTimeout(function() { k(null); }, ms);
adamc@1021 1716 }
adamc@1021 1717
adamc@1021 1718 function sp(e) {
adam@1794 1719 window.setTimeout(function() { execF(e); }, 0);
adamc@978 1720 }
adamc@978 1721
adamc@693 1722
adamc@970 1723 // The Ur interpreter
adamc@970 1724
adamc@970 1725 var urfuncs = [];
adamc@970 1726
adamc@970 1727 function lookup(env, n) {
adamc@1260 1728 while (env != null) {
adamc@1260 1729 if (n == 0)
adamc@1260 1730 return env.data;
adamc@1260 1731 else {
adamc@1260 1732 --n;
adamc@1260 1733 env = env.next;
adamc@1260 1734 }
adamc@970 1735 }
adamc@970 1736
adamc@1260 1737 whine("Out-of-bounds Ur variable reference");
adamc@970 1738 }
adamc@970 1739
adamc@974 1740 function execP(env, p, v) {
adamc@1260 1741 switch (p.c) {
adamc@1260 1742 case "w":
adamc@1260 1743 return env;
adamc@1260 1744 case "v":
adamc@1260 1745 return cons(v, env);
adamc@1260 1746 case "c":
adamc@1260 1747 if (v == p.v)
adamc@1260 1748 return env;
adamc@1260 1749 else
adamc@1260 1750 return false;
adamc@1260 1751 case "s":
adamc@1260 1752 if (v == null)
adamc@1260 1753 return false;
adamc@1260 1754 else
adamc@1260 1755 return execP(env, p.p, p.n ? v.v : v);
adamc@1260 1756 case "1":
adamc@1260 1757 if (v.n != p.n)
adamc@1260 1758 return false;
adamc@1260 1759 else
adamc@1260 1760 return execP(env, p.p, v.v);
adamc@1260 1761 case "r":
adamc@1260 1762 for (var fs = p.l; fs != null; fs = fs.next) {
adamc@1260 1763 env = execP(env, fs.data.p, v["_" + fs.data.n]);
adamc@1260 1764 if (env == false)
adamc@1260 1765 return false;
adamc@1260 1766 }
adamc@1260 1767 return env;
adamc@1260 1768 default:
adamc@1260 1769 whine("Unknown Ur pattern kind" + p.c);
adamc@974 1770 }
adamc@974 1771 }
adamc@974 1772
adamc@970 1773 function exec0(env, e) {
adamc@1260 1774 return exec1(env, null, e);
adamc@1020 1775 }
adamc@1020 1776
adamc@1020 1777 function exec1(env, stack, e) {
adamc@1260 1778 var stack, usedK = false;
adamc@970 1779
adamc@1260 1780 var saveEnv = function() {
adamc@1260 1781 if (stack.next != null && stack.next.data.c != "<")
adamc@1260 1782 stack = cons({c: "<", env: env}, stack.next);
adamc@1260 1783 else
adamc@1260 1784 stack = stack.next;
adamc@1260 1785 };
adamc@983 1786
adamc@1260 1787 while (true) {
adamc@1260 1788 switch (e.c) {
adamc@1260 1789 case "c":
adamc@1260 1790 var v = e.v;
adamc@1260 1791 if (stack == null)
adamc@1260 1792 return v;
adamc@1260 1793 var fr = stack.data;
adamc@970 1794
adamc@1260 1795 switch (fr.c) {
adamc@1260 1796 case "s":
adamc@1260 1797 e = {c: "c", v: {v: v}};
adamc@1260 1798 stack = stack.next;
adamc@1260 1799 break;
adamc@1260 1800 case "1":
adamc@1260 1801 e = {c: "c", v: {n: fr.n, v: v}};
adamc@1260 1802 stack = stack.next;
adamc@1260 1803 break;
adamc@1260 1804 case "f":
adamc@1260 1805 fr.args[fr.pos++] = v;
adamc@1260 1806 if (fr.a == null) {
adamc@1260 1807 var res;
adamc@1260 1808 stack = stack.next;
adamc@1035 1809
adamc@1260 1810 if (fr.f.apply)
adamc@1260 1811 res = fr.f.apply(null, fr.args);
adamc@1260 1812 else if (fr.args.length == 0)
adamc@1260 1813 res = fr.f();
adamc@1260 1814 else if (fr.args.length == 1)
adamc@1260 1815 res = fr.f(fr.args[0]);
adamc@1260 1816 else if (fr.args.length == 2)
adamc@1260 1817 res = fr.f(fr.args[0], fr.args[1]);
adamc@1260 1818 else if (fr.args.length == 3)
adamc@1260 1819 res = fr.f(fr.args[0], fr.args[1], fr.args[2]);
adamc@1260 1820 else if (fr.args.length == 4)
adamc@1260 1821 res = fr.f(fr.args[0], fr.args[1], fr.args[2], fr.args[3]);
adamc@1260 1822 else if (fr.args.length == 5)
adamc@1260 1823 res = fr.f(fr.args[0], fr.args[1], fr.args[2], fr.args[3], fr.args[4]);
adamc@1260 1824 else
adamc@1260 1825 whine("Native function has " + fr.args.length + " args, but there is no special case for that count.");
adamc@1035 1826
adamc@1260 1827 e = {c: "c", v: res};
adamc@1260 1828 if (usedK) return null;
adamc@1260 1829 } else {
adamc@1260 1830 e = fr.a.data;
adamc@1260 1831 fr.a = fr.a.next;
adamc@1260 1832 }
adamc@1260 1833 break;
adamc@1260 1834 case "a1":
adamc@1260 1835 e = fr.x;
adamc@1260 1836 stack = cons({c: "a2", f: v}, stack.next);
adamc@1260 1837 break;
adamc@1260 1838 case "a2":
adamc@1260 1839 if (fr.f == null)
adamc@1260 1840 whine("Ur: applying null function");
adamc@1260 1841 else if (fr.f.body) {
adamc@1260 1842 saveEnv();
adamc@1260 1843 env = cons(v, fr.f.env);
adamc@1260 1844 e = fr.f.body;
adamc@1260 1845 } else {
adamc@1260 1846 e = {c: "c", v: fr.f(v)};
adamc@1260 1847 stack = stack.next;
adamc@1260 1848 }
adamc@1260 1849 break;
adamc@1260 1850 case "<":
adamc@1260 1851 env = fr.env;
adamc@1260 1852 stack = stack.next;
adamc@1260 1853 break;
adamc@1260 1854 case "r":
adamc@1260 1855 fr.fs["_" + fr.n] = v;
adamc@1260 1856 if (fr.l == null) {
adamc@1260 1857 e = {c: "c", v: fr.fs};
adamc@1260 1858 stack = stack.next;
adamc@1260 1859 } else {
adamc@1260 1860 fr.n = fr.l.data.n;
adamc@1260 1861 e = fr.l.data.v;
adamc@1260 1862 fr.l = fr.l.next;
adamc@1260 1863 }
adamc@1260 1864 break;
adamc@1260 1865 case ".":
adamc@1260 1866 e = {c: "c", v: v["_" + fr.f]};
adamc@1260 1867 stack = stack.next;
adamc@1260 1868 break;
adamc@1260 1869 case ";":
adamc@1260 1870 e = fr.e2;
adamc@1260 1871 stack = stack.next;
adamc@1260 1872 break;
adamc@1260 1873 case "=":
adamc@1260 1874 saveEnv();
adamc@1260 1875 env = cons(v, env);
adamc@1260 1876 e = fr.e2;
adamc@1260 1877 break;
adamc@1260 1878 case "m":
adamc@1260 1879 var ps;
adamc@1260 1880 for (ps = fr.p; ps != null; ps = ps.next) {
adamc@1260 1881 var r = execP(env, ps.data.p, v);
adamc@1260 1882 if (r != false) {
adamc@1260 1883 saveEnv();
adamc@1260 1884 env = r;
adamc@1260 1885 e = ps.data.b;
adamc@1260 1886 break;
adamc@1260 1887 }
adamc@1260 1888 }
adamc@1260 1889 if (ps == null)
adamc@1260 1890 whine("Match failure in Ur interpretation");
adamc@1260 1891 break;
adamc@1260 1892 default:
adamc@1260 1893 whine("Unknown Ur continuation kind " + fr.c);
adamc@1260 1894 }
adamc@1260 1895
adamc@1260 1896 break;
adamc@1260 1897 case "v":
adamc@1260 1898 e = {c: "c", v: lookup(env, e.n)};
adamc@1260 1899 break;
adamc@1260 1900 case "n":
adamc@1260 1901 var idx = e.n;
adamc@1260 1902 e = urfuncs[idx];
adamc@1260 1903 if (e.c == "t")
adamc@1262 1904 e = urfuncs[idx] = eval("(" + e.f + ")");
adamc@1260 1905 break;
adamc@1260 1906 case "s":
adamc@1260 1907 stack = cons({c: "s"}, stack);
adamc@1260 1908 e = e.v;
adamc@1260 1909 break;
adamc@1260 1910 case "1":
adamc@1260 1911 stack = cons({c: "1", n: e.n}, stack);
adamc@1260 1912 e = e.v;
adamc@1260 1913 break;
adamc@1260 1914 case "f":
adamc@1260 1915 if (e.a == null)
adam@1798 1916 e = {c: "c", v: e.f()};
adamc@1260 1917 else {
adamc@1260 1918 var args = [];
adam@1798 1919 stack = cons({c: "f", f: e.f, args: args, pos: 0, a: e.a.next}, stack);
adamc@1260 1920 if (!e.a.data.c) alert("[2] fr.f = " + e.f + "; 0 = " + e.a.data);
adamc@1260 1921 e = e.a.data;
adamc@1260 1922 }
adamc@1260 1923 break;
adamc@1260 1924 case "l":
adamc@1260 1925 e = {c: "c", v: {env: env, body: e.b}};
adamc@1260 1926 break;
adamc@1260 1927 case "a":
adamc@1260 1928 stack = cons({c: "a1", x: e.x}, stack);
adamc@1260 1929 e = e.f;
adamc@1260 1930 break;
adamc@1260 1931 case "r":
adamc@1260 1932 if (e.l == null)
adamc@1260 1933 whine("Empty Ur record in interpretation");
adamc@1260 1934 var fs = {};
adamc@1260 1935 stack = cons({c: "r", n: e.l.data.n, fs: fs, l: e.l.next}, stack);
adamc@1260 1936 e = e.l.data.v;
adamc@1260 1937 break;
adamc@1260 1938 case ".":
adamc@1260 1939 stack = cons({c: ".", f: e.f}, stack);
adamc@1260 1940 e = e.r;
adamc@1260 1941 break;
adamc@1260 1942 case ";":
adamc@1260 1943 stack = cons({c: ";", e2: e.e2}, stack);
adamc@1260 1944 e = e.e1;
adamc@1260 1945 break;
adamc@1260 1946 case "=":
adamc@1260 1947 stack = cons({c: "=", e2: e.e2}, stack);
adamc@1260 1948 e = e.e1;
adamc@1260 1949 break;
adamc@1260 1950 case "m":
adamc@1260 1951 stack = cons({c: "m", p: e.p}, stack);
adamc@1260 1952 e = e.e;
adamc@1260 1953 break;
adamc@1260 1954 case "e":
adamc@1260 1955 e = {c: "c", v: cs({c: "wc", env: env, body: e.e})};
adamc@1260 1956 break;
adamc@1260 1957 case "wc":
adamc@1260 1958 env = e.env;
adamc@1260 1959 e = e.body;
adamc@1260 1960 break;
adamc@1260 1961 case "K":
adamc@1260 1962 { var savedStack = stack.next, savedEnv = env;
adamc@1260 1963 e = {c: "c", v: function(v) { return exec1(savedEnv, savedStack, {c: "c", v: v}); } };}
adamc@1260 1964 usedK = true;
rmbruijn@1597 1965 break;
adamc@1260 1966 default:
adamc@1260 1967 whine("Unknown Ur expression kind " + e.c);
adamc@970 1968 }
adamc@970 1969 }
adamc@970 1970 }
adamc@970 1971
adamc@976 1972 function execD(e) {
adamc@1260 1973 return exec0(null, e);
adamc@976 1974 }
adamc@976 1975
adamc@970 1976 function exec(e) {
adamc@1260 1977 var r = exec0(null, e);
adamc@970 1978
adamc@1260 1979 if (r != null && r.body != null)
adamc@1260 1980 return function(v) { return exec0(cons(v, r.env), r.body); };
adamc@1260 1981 else
adamc@1260 1982 return r;
adamc@895 1983 }
adamc@895 1984
adamc@977 1985 function execF(f, x) {
adamc@1260 1986 return exec0(cons(x, f.env), f.body);
adamc@977 1987 }
adamc@977 1988
adamc@895 1989
adam@1290 1990 // Wrappers
adam@1290 1991
adam@1290 1992 function confrm(s) {
adam@1290 1993 return confirm(s) ? true : false;
adam@1290 1994 }
adam@1290 1995
adam@1290 1996
adamc@1323 1997 // URL blessing
adamc@1323 1998
adamc@1323 1999 var urlRules = null;
adamc@1323 2000
adamc@1323 2001 function checkUrl(s) {
adamc@1323 2002 for (var r = urlRules; r; r = r.next) {
adamc@1323 2003 var ru = r.data;
adamc@1323 2004 if (ru.prefix ? s.indexOf(ru.pattern) == 0 : s == ru.pattern)
adamc@1323 2005 return ru.allow ? s : null;
adamc@1323 2006 }
adamc@1323 2007
adamc@1323 2008 return null;
adamc@1323 2009 }
adamc@1323 2010
adamc@1323 2011 function bless(s) {
adamc@1323 2012 u = checkUrl(s);
adamc@1323 2013 if (u == null)
adamc@1323 2014 er("Disallowed URL: " + s);
adamc@1323 2015 return u;
adamc@1323 2016 }
adamc@1323 2017
adam@1556 2018
adam@2008 2019 // Attribute name blessing
adam@2008 2020
adam@2008 2021 function blessData(s) {
adam@2008 2022 for (var i = 0; i < s.length; ++i) {
adam@2008 2023 var c = s[i];
adam@2008 2024 if (!isAlnum(c) && c != '-' && c != '_')
adam@2008 2025 er("Disallowed character in data-* attribute name");
adam@2008 2026 }
adam@2008 2027
adam@2008 2028 return s;
adam@2008 2029 }
adam@2008 2030
adam@2008 2031
adam@1755 2032 // CSS validation
adam@1755 2033
adam@1755 2034 function atom(s) {
adam@1755 2035 for (var i = 0; i < s.length; ++i) {
adam@1755 2036 var c = s[i];
adam@1755 2037 if (!isAlnum(c) && c != '+' && c != '-' && c != '.' && c != '%' && c != '#')
adam@1755 2038 er("Disallowed character in CSS atom");
adam@1755 2039 }
adam@1755 2040
adam@1755 2041 return s;
adam@1755 2042 }
adam@1755 2043
adam@1755 2044 function css_url(s) {
adam@1755 2045 for (var i = 0; i < s.length; ++i) {
adam@1755 2046 var c = s[i];
adam@1755 2047 if (!isAlnum(c) && c != ':' && c != '/' && c != '.' && c != '_' && c != '+'
adam@1755 2048 && c != '-' && c != '%' && c != '?' && c != '&' && c != '=' && c != '#')
adam@1755 2049 er("Disallowed character in CSS URL");
adam@1755 2050 }
adam@1755 2051
adam@1755 2052 return s;
adam@1755 2053 }
adam@1755 2054
adam@1755 2055 function property(s) {
adam@1755 2056 if (s.length <= 0)
adam@1755 2057 er("Empty CSS property");
adam@1755 2058
adam@1755 2059 if (!isLower(s[0]) && s[0] != '_')
adam@1755 2060 er("Bad initial character in CSS property");
adam@1755 2061
adam@1755 2062 for (var i = 0; i < s.length; ++i) {
adam@1755 2063 var c = s[i];
adam@1755 2064 if (!isLower(c) && !isDigit(c) && c != '_' && c != '-')
adam@1755 2065 er("Disallowed character in CSS property");
adam@1755 2066 }
adam@1755 2067
adam@1755 2068 return s;
adam@1755 2069 }
adam@1755 2070
adam@1755 2071
adam@1556 2072 // ID generation
adam@1556 2073
adam@1556 2074 var nextId = 0;
adam@1556 2075
adam@1556 2076 function fresh() {
adam@1703 2077 return "uw" + (--nextId);
adam@1556 2078 }
adam@1556 2079
adam@1785 2080 function giveFocus(id) {
adam@1803 2081 var node = document.getElementById(id);
adam@1785 2082
adam@1803 2083 if (node)
adam@1803 2084 node.focus();
adam@1803 2085 else
adam@1803 2086 er("Tried to give focus to ID not used in document: " + id);
adam@1785 2087 }
adam@1785 2088
rmbruijn@1597 2089
adamc@693 2090 // App-specific code