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annotate lib/js/urweb.js @ 1986:b2254554542f

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Add Datetime JavaScript support.
author Patrick Hurst <phurst@mit.edu>
date Mon, 17 Feb 2014 19:21:46 -0500
parents a671e5258a2c
children abb6981a2c4c
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@1571 115
adam@1599 116 // Time, represented as counts of microseconds since the epoch
adam@1487 117
adam@1629 118 var time_format = "%c";
adam@1629 119
adam@1487 120 function showTime(tm) {
adam@1629 121 return strftime(time_format, tm);
adam@1629 122 }
adam@1629 123
adam@1629 124 function showTimeHtml(tm) {
adam@1629 125 return eh(showTime(tm));
adam@1487 126 }
adam@1487 127
adam@1487 128 function now() {
adam@1487 129 return (new Date()).getTime() * 1000;
adam@1487 130 }
adam@1487 131
adam@1514 132 function diffInSeconds(tm1, tm2) {
adam@1514 133 return Math.round((tm2 - tm1) / 1000000);
adam@1514 134 }
adam@1514 135
adam@1685 136 function diffInMilliseconds(tm1, tm2) {
adam@1685 137 return Math.round((tm2 - tm1) / 1000);
adam@1685 138 }
adam@1685 139
adam@1514 140 function toSeconds(tm) {
adam@1514 141 return Math.round(tm / 1000000);
adam@1514 142 }
adam@1514 143
adam@1685 144 function toMilliseconds(tm) {
adam@1685 145 return Math.round(tm / 1000);
adam@1685 146 }
adam@1685 147
adam@1518 148 function addSeconds(tm, n) {
adam@1518 149 return tm + n * 1000000;
adam@1518 150 }
adam@1518 151
adam@1599 152 function stringToTime_error(string) {
adam@1599 153 var t = Date.parse(string);
adam@1599 154 if (isNaN(t))
adam@1632 155 er("Invalid date string: " + string);
adam@1599 156 else
adam@1599 157 return t * 1000;
adam@1599 158 }
adam@1599 159
adam@1599 160 function stringToTime(string) {
adam@1599 161 try {
adam@1599 162 var t = Date.parse(string);
adam@1599 163 if (isNaN(t))
adam@1599 164 return null;
adam@1599 165 else
adam@1599 166 return t * 1000;
adam@1599 167 } catch (e) {
adam@1599 168 return null;
adam@1599 169 }
rmbruijn@1597 170 }
rmbruijn@1597 171
adam@1609 172 /*
adam@1615 173 strftime() implementation from:
adam@1615 174 YUI 3.4.1 (build 4118)
adam@1615 175 Copyright 2011 Yahoo! Inc. All rights reserved.
adam@1615 176 Licensed under the BSD License.
adam@1615 177 http://yuilibrary.com/license/
adam@1615 178 */
adam@1609 179
adam@1615 180 var xPad=function (x, pad, r)
adam@1615 181 {
adam@1615 182 if(typeof r === "undefined")
adam@1615 183 {
adam@1615 184 r=10;
adam@1615 185 }
adam@1615 186 pad = pad.toString();
adam@1615 187 for( ; parseInt(x, 10)<r && r>1; r/=10) {
adam@1615 188 x = pad + x;
adam@1615 189 }
adam@1615 190 return x.toString();
adam@1615 191 };
adam@1609 192
adam@1615 193 var YDateEn = {
adam@1615 194 a: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
adam@1615 195 A: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
adam@1615 196 b: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
adam@1615 197 B: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
adam@1615 198 c: "%a %d %b %Y %T %Z",
adam@1615 199 p: ["AM", "PM"],
adam@1615 200 P: ["am", "pm"],
adam@1615 201 r: "%I:%M:%S %p",
adam@1615 202 x: "%d/%m/%y",
adam@1615 203 X: "%T"
adam@1615 204 };
adam@1609 205
adam@1615 206 var Dt = {
adam@1615 207 formats: {
adam@1615 208 a: function (d, l) { return l.a[d.getDay()]; },
adam@1615 209 A: function (d, l) { return l.A[d.getDay()]; },
adam@1615 210 b: function (d, l) { return l.b[d.getMonth()]; },
adam@1615 211 B: function (d, l) { return l.B[d.getMonth()]; },
adam@1615 212 C: function (d) { return xPad(parseInt(d.getFullYear()/100, 10), 0); },
adam@1615 213 d: ["getDate", "0"],
adam@1615 214 e: ["getDate", " "],
adam@1615 215 g: function (d) { return xPad(parseInt(Dt.formats.G(d)%100, 10), 0); },
adam@1615 216 G: function (d) {
adam@1615 217 var y = d.getFullYear();
adam@1615 218 var V = parseInt(Dt.formats.V(d), 10);
adam@1615 219 var W = parseInt(Dt.formats.W(d), 10);
phurst@1986 220
adam@1615 221 if(W > V) {
adam@1615 222 y++;
adam@1615 223 } else if(W===0 && V>=52) {
adam@1615 224 y--;
adam@1615 225 }
phurst@1986 226
adam@1615 227 return y;
adam@1615 228 },
adam@1615 229 H: ["getHours", "0"],
adam@1615 230 I: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, 0); },
adam@1615 231 j: function (d) {
adam@1615 232 var gmd_1 = new Date("" + d.getFullYear() + "/1/1 GMT");
adam@1615 233 var gmdate = new Date("" + d.getFullYear() + "/" + (d.getMonth()+1) + "/" + d.getDate() + " GMT");
adam@1615 234 var ms = gmdate - gmd_1;
adam@1615 235 var doy = parseInt(ms/60000/60/24, 10)+1;
adam@1615 236 return xPad(doy, 0, 100);
adam@1615 237 },
adam@1615 238 k: ["getHours", " "],
adam@1615 239 l: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, " "); },
adam@1615 240 m: function (d) { return xPad(d.getMonth()+1, 0); },
adam@1615 241 M: ["getMinutes", "0"],
adam@1615 242 p: function (d, l) { return l.p[d.getHours() >= 12 ? 1 : 0 ]; },
adam@1615 243 P: function (d, l) { return l.P[d.getHours() >= 12 ? 1 : 0 ]; },
adam@1615 244 s: function (d, l) { return parseInt(d.getTime()/1000, 10); },
adam@1615 245 S: ["getSeconds", "0"],
adam@1615 246 u: function (d) { var dow = d.getDay(); return dow===0?7:dow; },
adam@1615 247 U: function (d) {
adam@1615 248 var doy = parseInt(Dt.formats.j(d), 10);
adam@1615 249 var rdow = 6-d.getDay();
adam@1615 250 var woy = parseInt((doy+rdow)/7, 10);
adam@1615 251 return xPad(woy, 0);
adam@1615 252 },
adam@1615 253 V: function (d) {
adam@1615 254 var woy = parseInt(Dt.formats.W(d), 10);
adam@1615 255 var dow1_1 = (new Date("" + d.getFullYear() + "/1/1")).getDay();
adam@1615 256 var idow = woy + (dow1_1 > 4 || dow1_1 <= 1 ? 0 : 1);
adam@1615 257 if(idow === 53 && (new Date("" + d.getFullYear() + "/12/31")).getDay() < 4)
adam@1615 258 {
adam@1615 259 idow = 1;
adam@1615 260 }
adam@1615 261 else if(idow === 0)
adam@1615 262 {
adam@1615 263 idow = Dt.formats.V(new Date("" + (d.getFullYear()-1) + "/12/31"));
adam@1615 264 }
phurst@1986 265
adam@1615 266 return xPad(idow, 0);
adam@1615 267 },
adam@1615 268 w: "getDay",
adam@1615 269 W: function (d) {
adam@1615 270 var doy = parseInt(Dt.formats.j(d), 10);
adam@1615 271 var rdow = 7-Dt.formats.u(d);
adam@1615 272 var woy = parseInt((doy+rdow)/7, 10);
adam@1615 273 return xPad(woy, 0, 10);
adam@1615 274 },
adam@1615 275 y: function (d) { return xPad(d.getFullYear()%100, 0); },
adam@1615 276 Y: "getFullYear",
adam@1615 277 z: function (d) {
adam@1615 278 var o = d.getTimezoneOffset();
adam@1615 279 var H = xPad(parseInt(Math.abs(o/60), 10), 0);
adam@1615 280 var M = xPad(Math.abs(o%60), 0);
adam@1615 281 return (o>0?"-":"+") + H + M;
adam@1615 282 },
adam@1615 283 Z: function (d) {
adam@1615 284 var tz = d.toString().replace(/^.*:\d\d( GMT[+-]\d+)? \(?([A-Za-z ]+)\)?\d*$/, "$2").replace(/[a-z ]/g, "");
adam@1615 285 if(tz.length > 4) {
adam@1615 286 tz = Dt.formats.z(d);
adam@1615 287 }
adam@1615 288 return tz;
adam@1615 289 },
adam@1615 290 "%": function (d) { return "%"; }
adam@1615 291 },
adam@1615 292
adam@1615 293 aggregates: {
adam@1615 294 c: "locale",
adam@1615 295 D: "%m/%d/%y",
adam@1615 296 F: "%Y-%m-%d",
adam@1615 297 h: "%b",
adam@1615 298 n: "\n",
adam@1615 299 r: "%I:%M:%S %p",
adam@1615 300 R: "%H:%M",
adam@1615 301 t: "\t",
adam@1615 302 T: "%H:%M:%S",
adam@1615 303 x: "locale",
adam@1615 304 X: "locale"
adam@1615 305 },
adam@1615 306
adam@1615 307 format : function (oDate, format) {
adam@1615 308 var replace_aggs = function (m0, m1) {
adam@1615 309 var f = Dt.aggregates[m1];
adam@1615 310 return (f === "locale" ? YDateEn[m1] : f);
adam@1615 311 };
adam@1615 312
adam@1615 313 var replace_formats = function (m0, m1) {
adam@1615 314 var f = Dt.formats[m1];
adam@1615 315 switch(typeof f) {
adam@1615 316 case "string":
adam@1615 317 return oDate[f]();
adam@1615 318 case "function":
adam@1615 319 return f.call(oDate, oDate, YDateEn);
adam@1615 320 case "array":
adam@1615 321 case "object":
adam@1615 322 if(typeof(f[0]) === "string")
adam@1615 323 return xPad(oDate[f[0]](), f[1]);
adam@1615 324 default:
adam@1615 325 return m1;
adam@1615 326 }
adam@1615 327 };
adam@1615 328
adam@1615 329 while(format.match(/%[cDFhnrRtTxX]/)) {
adam@1615 330 format = format.replace(/%([cDFhnrRtTxX])/g, replace_aggs);
adam@1609 331 }
adam@1615 332
adam@1615 333 var str = format.replace(/%([aAbBCdegGHIjklmMpPsSuUVwWyYzZ%])/g, replace_formats);
adam@1615 334
adam@1615 335 replace_aggs = replace_formats = undefined;
adam@1615 336
adam@1615 337 return str;
adam@1615 338 }
adam@1609 339 };
adam@1609 340
adam@1615 341 // End of YUI code
adam@1609 342
adam@1609 343 function strftime(fmt, thisTime)
adam@1609 344 {
adam@1609 345 var thisDate = new Date();
adam@1622 346 thisDate.setTime(Math.floor(thisTime / 1000));
adam@1615 347 return Dt.format(thisDate, fmt);
phurst@1986 348 };
phurst@1986 349
phurst@1986 350 function fromDatetime(year, month, date, hour, minute, second) {
phurst@1986 351 console.log(arguments);
phurst@1986 352 return (new Date(year, month, date, hour, minute, second)).getTime() * 1000;
phurst@1986 353 };
phurst@1986 354
phurst@1986 355 function datetimeYear(t) {
phurst@1986 356 return (new Date(t / 1000)).getYear() + 1900;
phurst@1986 357 };
phurst@1986 358
phurst@1986 359 function datetimeMonth(t) {
phurst@1986 360 return (new Date(t / 1000)).getMonth();
phurst@1986 361 };
phurst@1986 362
phurst@1986 363 function datetimeDay(t) {
phurst@1986 364 return (new Date(t / 1000)).getDate();
phurst@1986 365 };
phurst@1986 366
phurst@1986 367 function datetimeHour(t) {
phurst@1986 368 return (new Date(t / 1000)).getHours();
phurst@1986 369 };
phurst@1986 370
phurst@1986 371 function datetimeMinute(t) {
phurst@1986 372 return (new Date(t / 1000)).getMinutes();
phurst@1986 373 };
phurst@1986 374
phurst@1986 375 function datetimeSecond(t) {
phurst@1986 376 return (new Date(t / 1000)).getSeconds();
phurst@1986 377 };
phurst@1986 378
phurst@1986 379 function datetimeDayOfWeek(t) {
phurst@1986 380 return (new Date(t / 1000)).getDay();
phurst@1986 381 };
adam@1609 382
adam@1487 383
adamc@729 384 // Error handling
adamc@729 385
adam@1625 386 function uw_debug(msg) {
adam@1625 387 try {
adam@1625 388 console.debug(msg);
adam@1625 389 } catch (e) {
adam@1625 390 alert("DEBUG: " + msg);
adam@1625 391 }
adam@1625 392
adam@1625 393 return 0;
adam@1625 394 }
adam@1625 395
adamc@729 396 function whine(msg) {
adamc@1260 397 alert(msg);
adamc@1260 398 throw msg;
adamc@729 399 }
adamc@729 400
adamc@810 401 function pf(loc) {
adamc@1260 402 throw ("Pattern match failure (" + loc + ")");
adamc@729 403 }
adamc@729 404
adam@1553 405 var lameDuck = false;
adam@1553 406
adamc@798 407 function runHandlers(kind, ls, arg) {
adam@1553 408 if (!lameDuck) {
adam@1553 409 if (ls == null)
adam@1553 410 alert(kind + ": " + arg);
adam@1553 411 for (; ls; ls = ls.next)
adam@1553 412 try {
adam@1890 413 exec({c:"a", f:{c:"a", f:ls.data, x:{c:"c", v:arg}}, x:{c:"c", v:null}});
adam@1553 414 } catch (v) { }
adam@1553 415 }
adamc@729 416 }
adamc@729 417
adamc@729 418 var errorHandlers = null;
adamc@729 419
adam@1890 420 function flift0(v) {
adam@1890 421 return {c:"c", v:v};
adam@1890 422 }
adam@1890 423
adamc@729 424 function onError(f) {
adam@1890 425 errorHandlers = cons(flift0(f), errorHandlers);
adamc@729 426 }
adamc@729 427
adamc@729 428 function er(s) {
adamc@1260 429 runHandlers("Error", errorHandlers, s);
adamc@1260 430 throw {uw_error: s};
adamc@729 431 }
adamc@729 432
adamc@729 433 var failHandlers = null;
adamc@729 434
adamc@729 435 function onFail(f) {
adam@1890 436 failHandlers = cons(flift0(f), failHandlers);
adamc@729 437 }
adamc@729 438
adamc@729 439 function doExn(v) {
adamc@1260 440 if (v == null || v.uw_error == null) {
adamc@1260 441 var s = (v == null ? "null" : v.message ? v.message : v.toString());
adamc@1260 442 if (v != null && v.fileName && v.lineNumber)
adamc@1260 443 s += " (" + v.fileName + ":" + v.lineNumber + ")";
adamc@1260 444 runHandlers("Fail", failHandlers, s);
adamc@1260 445 }
adamc@729 446 }
adamc@729 447
adamc@729 448 var disconnectHandlers = null;
adamc@729 449
adamc@976 450 function flift(f) {
kkallio@1484 451 return {c: "c", v:{env:cons(f,null), body:{c:"v", n:1}}};
adamc@976 452 }
adamc@976 453
adamc@729 454 function onDisconnect(f) {
adamc@1260 455 disconnectHandlers = cons(flift(f), disconnectHandlers);
adamc@729 456 }
adamc@729 457
adamc@729 458 function discon() {
adamc@1260 459 runHandlers("Disconnect", disconnectHandlers, null);
adamc@729 460 }
adamc@729 461
adamc@729 462 var connectHandlers = null;
adamc@729 463
adamc@729 464 function onConnectFail(f) {
adamc@1260 465 connectHandlers = cons(flift(f), connectHandlers);
adamc@729 466 }
adamc@729 467
adamc@729 468 function conn() {
adamc@1260 469 runHandlers("Connect", connectHandlers, null);
adamc@729 470 }
adamc@729 471
adamc@729 472 var serverHandlers = null;
adamc@729 473
adamc@729 474 function onServerError(f) {
adam@1890 475 serverHandlers = cons(flift0(f), serverHandlers);
adamc@729 476 }
adamc@729 477
adamc@729 478 function servErr(s) {
adamc@1260 479 window.setTimeout(function () { runHandlers("Server", serverHandlers, s); }, 0);
adamc@729 480 }
adamc@729 481
adam@1783 482 // Key and mouse events
adam@1555 483
adam@1555 484 var uw_event = null;
adam@1555 485
adam@1783 486 function uw_getEvent() {
adam@1783 487 return window.event ? window.event : uw_event;
adam@1555 488 }
adam@1555 489
adam@1783 490 function firstGood(x, y) {
adam@1783 491 if (x == undefined || x == 0)
adam@1783 492 return y;
adam@1783 493 else
adam@1783 494 return x;
adam@1783 495 }
adam@1783 496
adam@1783 497 function uw_mouseEvent() {
adam@1783 498 var ev = uw_getEvent();
adam@1783 499
adam@1783 500 return {_ScreenX : firstGood(ev.screenX, 0),
adam@1783 501 _ScreenY : firstGood(ev.screenY, 0),
adam@1783 502 _ClientX : firstGood(ev.clientX, 0),
adam@1783 503 _ClientY : firstGood(ev.clientY, 0),
adam@1783 504 _CtrlKey : firstGood(ev.ctrlKey, false),
adam@1783 505 _ShiftKey : firstGood(ev.shiftKey, false),
adam@1783 506 _AltKey : firstGood(ev.altKey, false),
adam@1783 507 _MetaKey : firstGood(ev.metaKey, false),
adam@1783 508 _Button : ev.button == 2 ? "Right" : ev.button == 1 ? "Middle" : "Left"};
adam@1783 509 }
adam@1783 510
adam@1783 511 function uw_keyEvent() {
adam@1783 512 var ev = uw_getEvent();
adam@1783 513
adam@1783 514 return {_KeyCode : firstGood(ev.keyCode, ev.which),
adam@1783 515 _CtrlKey : firstGood(ev.ctrlKey, false),
adam@1783 516 _ShiftKey : firstGood(ev.shiftKey, false),
adam@1783 517 _AltKey : firstGood(ev.altKey, false),
adam@1783 518 _MetaKey : firstGood(ev.metaKey, false)};
adam@1783 519 }
adam@1783 520
adam@1783 521
adam@1783 522
adam@1555 523 // Document events
adam@1555 524
adam@1555 525 function uw_handler(name, f) {
adam@1555 526 var old = document[name];
adam@1555 527 if (old == undefined)
adam@1783 528 document[name] = function(event) { uw_event = event; execF(execF(f, uw_mouseEvent())); };
adam@1555 529 else
adam@1783 530 document[name] = function(event) { uw_event = event; old(); execF(execF(f, uw_mouseEvent())); };
adam@1555 531 }
adam@1555 532
adam@1555 533 function uw_onClick(f) {
adam@1555 534 uw_handler("onclick", f);
adam@1555 535 }
adam@1555 536
adam@1555 537 function uw_onDblclick(f) {
adam@1555 538 uw_handler("ondblclick", f);
adam@1555 539 }
adam@1555 540
adam@1555 541 function uw_onMousedown(f) {
adam@1555 542 uw_handler("onmousedown", f);
adam@1555 543 }
adam@1555 544
adam@1791 545 function uw_onMousemove(f) {
adam@1791 546 uw_handler("onmousemove", f);
adam@1791 547 }
adam@1791 548
adam@1791 549 function uw_onMouseout(f) {
adam@1791 550 uw_handler("onmouseout", f);
adam@1791 551 }
adam@1791 552
adam@1791 553 function uw_onMouseover(f) {
adam@1791 554 uw_handler("onmouseover", f);
adam@1791 555 }
adam@1791 556
adam@1555 557 function uw_onMouseup(f) {
adam@1555 558 uw_handler("onmouseup", f);
adam@1555 559 }
adam@1555 560
adam@1555 561 function uw_keyHandler(name, f) {
adam@1555 562 var old = document[name];
adam@1555 563 if (old == undefined)
adam@1783 564 document[name] = function(event) { uw_event = event; execF(execF(f, uw_keyEvent())); };
adam@1555 565 else
adam@1783 566 document[name] = function(event) { uw_event = event; old(); execF(execF(f, uw_keyEvent())); };
adam@1555 567 }
adam@1555 568
adam@1555 569 function uw_onKeydown(f) {
adam@1555 570 uw_keyHandler("onkeydown", f);
adam@1555 571 }
adam@1555 572
adam@1555 573 function uw_onKeypress(f) {
adam@1555 574 uw_keyHandler("onkeypress", f);
adam@1555 575 }
adam@1555 576
adam@1555 577 function uw_onKeyup(f) {
adam@1555 578 uw_keyHandler("onkeyup", f);
adam@1555 579 }
adam@1555 580
adam@1559 581 // Cancelling of further event processing
adam@1559 582
adam@1559 583 function uw_preventDefault() {
adam@1559 584 var e = window.event ? window.event : uw_event;
adam@1559 585 e.returnValue = false;
adam@1559 586 if (e.preventDefault) e.preventDefault();
adam@1559 587 }
adam@1559 588
adam@1559 589 function uw_stopPropagation() {
adam@1559 590 var e = window.event ? window.event : uw_event;
adam@1559 591 e.cancelBubble = true;
adam@1559 592 if (e.stopPropagation) e.stopPropagation();
adam@1559 593 }
adamc@729 594
adamc@692 595 // Embedding closures in XML strings
adamc@692 596
adamc@693 597 function cs(f) {
adamc@1260 598 return {closure: f};
adamc@693 599 }
adamc@693 600
adamc@693 601 function isWeird(v) {
adamc@1260 602 return v.closure != null || v.cat1 != null;
adamc@693 603 }
adamc@693 604
adamc@692 605 function cat(s1, s2) {
adamc@1260 606 if (isWeird(s1) || isWeird(s2))
adamc@1260 607 return {cat1: s1, cat2: s2};
adamc@1260 608 else
adamc@1260 609 return s1 + s2;
adamc@692 610 }
adamc@692 611
adamc@692 612 var closures = [];
adamc@703 613 var freeClosures = null;
adamc@692 614
adamc@692 615 function newClosure(f) {
adamc@1260 616 var n;
adamc@1260 617 if (freeClosures == null) {
adamc@1260 618 n = closures.length;
adamc@1260 619 } else {
adamc@1260 620 n = freeClosures.data;
adamc@1260 621 freeClosures = freeClosures.next;
adamc@1260 622 }
adamc@1260 623 closures[n] = f;
adamc@1260 624 return n;
adamc@692 625 }
adamc@692 626
adamc@703 627 function freeClosure(n) {
adamc@1260 628 closures[n] = null;
adamc@1260 629 freeClosures = cons(n, freeClosures);
adamc@703 630 }
adamc@703 631
adamc@692 632 function cr(n) {
adamc@1260 633 return closures[n];
adamc@692 634 }
adamc@692 635
vshabanoff@1813 636 function flattenAcc(a, cls, tr) {
vshabanoff@1813 637 if (tr.cat1 != null) {
vshabanoff@1813 638 flattenAcc(a, cls, tr.cat1);
vshabanoff@1813 639 flattenAcc(a, cls, tr.cat2);
vshabanoff@1813 640 } else if (tr.closure != null) {
adamc@1260 641 var cl = newClosure(tr.closure);
adamc@1260 642 cls.v = cons(cl, cls.v);
vshabanoff@1813 643 a.push("cr(", cl.toString(), ")");
adamc@1260 644 } else
vshabanoff@1813 645 a.push(tr);
vshabanoff@1813 646 }
vshabanoff@1813 647
vshabanoff@1813 648 function flatten(cls, tr) {
vshabanoff@1813 649 var a = [];
vshabanoff@1813 650 flattenAcc(a, cls, tr);
vshabanoff@1813 651 return a.join("");
adamc@692 652 }
adamc@692 653
adamc@728 654 function flattenLocal(s) {
adamc@1260 655 var cls = {v : null};
adamc@1260 656 var r = flatten(cls, s);
adamc@1260 657 for (cl = cls.v; cl != null; cl = cl.next)
adamc@1260 658 freeClosure(cl.data);
adamc@1260 659 return r;
adamc@728 660 }
adamc@728 661
adamc@692 662
adamc@692 663 // Dynamic tree management
adamc@692 664
adamc@690 665 function populate(node) {
adamc@1260 666 var s = node.signal;
adamc@1260 667 var oldSources = node.sources;
adamc@1260 668 try {
adamc@1260 669 var sr = execF(s, null);
adamc@1260 670 var newSources = sr._sources;
adamc@690 671
adamc@1260 672 for (var sp = oldSources; sp; sp = sp.next)
adamc@1260 673 if (!member(sp.data, newSources))
adamc@1260 674 sp.data.dyns = remove(node, sp.data.dyns);
adamc@690 675
adamc@1260 676 for (var sp = newSources; sp; sp = sp.next)
adamc@1260 677 if (!member(sp.data, oldSources))
adamc@1260 678 sp.data.dyns = cons(node, sp.data.dyns);
adamc@690 679
adamc@1260 680 node.sources = newSources;
adamc@1260 681 node.recreate(sr._data);
adamc@1260 682 } catch (v) {
adamc@1260 683 doExn(v);
adamc@1260 684 }
adamc@579 685 }
adamc@574 686
adamc@580 687 function sc(v) {
adamc@1260 688 return {data : v, dyns : null};
adamc@580 689 }
adamc@580 690 function sv(s, v) {
adam@1491 691 if (s.data != v) {
adam@1491 692 s.data = v;
adamc@967 693
adam@1491 694 for (var ls = s.dyns; ls; ls = ls.next)
adam@1491 695 if (!ls.dead)
adam@1491 696 populate(ls.data);
adam@1491 697 }
adamc@580 698 }
adamc@601 699 function sg(s) {
adamc@1260 700 return s.data;
adamc@601 701 }
adamc@579 702
adamc@580 703 function ss(s) {
adamc@1260 704 return {env:cons(s, null), body:{c:"r", l:
adamc@1260 705 cons({n:"sources", v:{c:"c", v:cons(s, null)}},
adamc@1260 706 cons({n:"data", v:{c:"f", f:sg, a:cons({c:"v", n:1}, null)}}, null))}};
adamc@580 707 }
adamc@580 708 function sr(v) {
adamc@1260 709 return {env:null, body:{c:"c", v:{_sources : null, _data : v}}};
adamc@580 710 }
adamc@580 711 function sb(x,y) {
adamc@1260 712 return {env:cons(y,cons(x,null)),
adamc@1260 713 body:{c:"=",
adamc@1260 714 e1:{c:"a", f:{c:"v", n:2}, x:{c:"c", v:null}},
adamc@1260 715 e2:{c:"=",
adamc@1260 716 e1:{c:"a",
adamc@1260 717 f:{c:"a", f:{c:"v", n:2}, x:{c:".", r:{c:"v", n:0}, f:"data"}},
adamc@1260 718 x:{c:"c", v:null}},
adamc@1260 719 e2:{c:"r", l:cons(
adamc@1260 720 {n:"sources", v:{c:"f", f:union, a:cons({c:".", r:{c:"v", n:1}, f:"sources"},
adamc@1260 721 cons({c:".", r:{c:"v", n:0}, f:"sources"}, null))}},
adamc@1260 722 cons({n:"data", v:{c:".", r:{c:"v", n:0}, f:"data"}}, null))}}}};
adamc@580 723 }
adamc@841 724 function scur(s) {
adamc@1260 725 return execF(s, null)._data;
adamc@841 726 }
adamc@571 727
adamc@604 728 function lastParent() {
adamc@1260 729 var pos = document.body;
adamc@604 730
adamc@1260 731 while (pos.lastChild && pos.lastChild.nodeType == 1)
adamc@1260 732 pos = pos.lastChild;
adamc@600 733
adamc@1260 734 pos = pos.parentNode;
adamc@1039 735
adamc@1260 736 return pos;
adamc@600 737 }
adamc@600 738
adam@1803 739 var thisScript = null;
adam@1803 740
adamc@604 741 function addNode(node) {
adam@1678 742 if (thisScript) {
adam@1678 743 if (thisScript.parentNode)
adam@1678 744 thisScript.parentNode.replaceChild(node, thisScript);
adam@1678 745 } else
adamc@1260 746 lastParent().appendChild(node);
adamc@603 747 }
adamc@603 748
adam@1803 749 function runScripts(node) {
adam@1803 750 if (node.tagName == "SCRIPT") {
adam@1803 751 var savedScript = thisScript;
adam@1803 752 thisScript = node;
phurst@1986 753
adam@1803 754 try {
adam@1803 755 eval(thisScript.text);
adam@1803 756 } catch (v) {
adam@1803 757 doExn(v);
adam@1803 758 }
adam@1803 759 if (thisScript.parentNode)
adam@1803 760 thisScript.parentNode.removeChild(thisScript);
adamc@690 761
adam@1803 762 thisScript = savedScript;
adam@1803 763 } else if (node.getElementsByTagName) {
adamc@1260 764 var savedScript = thisScript;
adamc@603 765
adamc@1260 766 var scripts = node.getElementsByTagName("script"), scriptsCopy = [];
adamc@1260 767 var len = scripts.length;
adamc@1260 768 for (var i = 0; i < len; ++i)
adamc@1260 769 scriptsCopy[i] = scripts[i];
adamc@1260 770 for (var i = 0; i < len; ++i) {
adamc@1260 771 thisScript = scriptsCopy[i];
adamc@1039 772
adamc@1260 773 try {
adamc@1260 774 eval(thisScript.text);
adamc@1260 775 } catch (v) {
adamc@1260 776 doExn(v);
adamc@1260 777 }
adamc@1260 778 if (thisScript.parentNode)
adamc@1260 779 thisScript.parentNode.removeChild(thisScript);
adamc@1260 780 }
adamc@1260 781
adamc@1260 782 thisScript = savedScript;
adamc@729 783 }
adamc@603 784 }
adamc@603 785
adamc@603 786
adamc@692 787 // Dynamic tree entry points
adamc@692 788
adamc@967 789 function killScript(scr) {
adamc@1260 790 scr.dead = true;
adamc@1260 791 for (var ls = scr.sources; ls; ls = ls.next)
adamc@1260 792 ls.data.dyns = remove(scr, ls.data.dyns);
adamc@1260 793 for (var ls = scr.closures; ls; ls = ls.next)
adamc@1260 794 freeClosure(ls.data);
adamc@967 795 }
adamc@967 796
adam@1538 797 // Sometimes we wind up with tables that contain <script>s outside the single <tbody>.
adam@1538 798 // To avoid dealing with that case, we normalize by moving <script>s into <tbody>.
adam@1538 799 function normalizeTable(table) {
adam@1538 800 var orig = table;
adam@1538 801
adam@1538 802 var script, next;
adam@1538 803
adam@1803 804 while (table && table.tagName != "TABLE")
adam@1538 805 table = table.parentNode;
adam@1538 806
adam@1538 807 for (var tbody = table.firstChild; tbody; tbody = tbody.nextSibling) {
adam@1538 808 if (tbody.tagName == "TBODY") {
adam@1681 809 var firstChild = tbody.firstChild;
adam@1681 810
adam@1538 811 for (script = table.firstChild; script && script != tbody; script = next) {
adam@1538 812 next = script.nextSibling;
adam@1538 813
adam@1681 814 if (firstChild)
adam@1681 815 tbody.insertBefore(script, firstChild);
adam@1681 816 else
adam@1681 817 tbody.appendChild(script);
adam@1538 818 }
adam@1538 819
adam@1538 820 return;
adam@1538 821 }
adam@1538 822 }
adam@1538 823
adam@1538 824 var tbody = document.createElement("tbody");
adam@1538 825 for (script = table.firstChild; script; script = next) {
adam@1538 826 next = script.nextSibling;
rmbruijn@1597 827
adam@1681 828 tbody.appendChild(script);
adam@1538 829 }
adam@1538 830 table.appendChild(tbody);
adam@1538 831 }
adam@1538 832
adam@1803 833 var suspendScripts = false;
adam@1803 834
adamc@901 835 function dyn(pnode, s) {
adam@1803 836 if (suspendScripts)
adam@1803 837 return;
adam@1803 838
adamc@1260 839 var x = document.createElement("script");
adamc@1260 840 x.dead = false;
adamc@1260 841 x.signal = s;
adamc@1260 842 x.sources = null;
adamc@1260 843 x.closures = null;
adamc@899 844
adamc@1260 845 var firstChild = null;
adamc@899 846
adamc@1260 847 x.recreate = function(v) {
adamc@1260 848 for (var ls = x.closures; ls; ls = ls.next)
adamc@1260 849 freeClosure(ls.data);
adamc@945 850
adamc@946 851 var next;
adamc@1260 852 for (var child = firstChild; child && child != x; child = next) {
adamc@1260 853 next = child.nextSibling;
adamc@1260 854
adamc@1260 855 killScript(child);
adamc@1260 856 if (child.getElementsByTagName) {
adamc@1260 857 var arr = child.getElementsByTagName("script");
adamc@1260 858 for (var i = 0; i < arr.length; ++i)
adamc@1260 859 killScript(arr[i]);
adamc@1260 860 }
adamc@1260 861
adamc@1260 862 if (child.parentNode)
adamc@1260 863 child.parentNode.removeChild(child);
adamc@946 864 }
adamc@903 865
adamc@1260 866 var cls = {v : null};
adamc@1260 867 var html = flatten(cls, v);
adamc@1260 868 if (pnode != "table" && pnode != "tr")
adamc@1260 869 html = dynPrefix + html;
adamc@1260 870 x.closures = cls.v;
adamc@946 871
adamc@1260 872 if (pnode == "table") {
adam@1538 873 normalizeTable(x.parentNode);
adam@1538 874
adamc@1260 875 var dummy = document.createElement("body");
adam@1803 876 suspendScripts = true;
adam@1803 877 try {
adam@1803 878 dummy.innerHTML = "<table>" + html + "</table>";
adam@1803 879 } catch (e) {
adam@1803 880 suspendScripts = false;
adam@1803 881 throw e;
adam@1803 882 }
adam@1803 883
adamc@1260 884 var table = x.parentNode;
adamc@1260 885
adamc@1260 886 if (table) {
adamc@1260 887 firstChild = null;
adamc@1260 888 var tbody;
adamc@1260 889
adamc@1260 890 var arr = dummy.getElementsByTagName("tbody");
adamc@1260 891
adamc@1260 892 var tbody;
adamc@1260 893 if (arr.length > 0 && arr[0].parentNode == dummy.firstChild) {
adamc@1260 894 tbody = arr[0];
adamc@1260 895 var next;
adamc@1260 896 for (var node = dummy.firstChild.firstChild; node; node = next) {
adamc@1260 897 next = node.nextSibling;
adamc@1260 898
adamc@1260 899 if (node.tagName != "TBODY")
adamc@1260 900 tbody.appendChild(node);
adamc@1260 901 }
adamc@1260 902 } else
adamc@1260 903 tbody = dummy.firstChild;
adamc@1260 904
adamc@1260 905 var next;
adamc@1260 906 firstChild = document.createElement("script");
adamc@1260 907 table.insertBefore(firstChild, x);
adamc@1260 908 for (var node = tbody.firstChild; node; node = next) {
adamc@1260 909 next = node.nextSibling;
adamc@1260 910 table.insertBefore(node, x);
adam@1803 911 suspendScripts = false;
adam@1803 912 runScripts(node);
adam@1803 913 suspendScripts = true;
adamc@1260 914 }
adamc@1260 915 }
adam@1803 916
adam@1803 917 suspendScripts = false;
adamc@1260 918 } else if (pnode == "tr") {
adamc@1260 919 var dummy = document.createElement("body");
adam@1803 920 suspendScripts = true;
adam@1803 921 try {
adam@1803 922 dummy.innerHTML = "<table><tr>" + html + "</tr></table>";
adam@1803 923 } catch (e) {
adam@1803 924 suspendScripts = false;
adam@1803 925 throw e;
adam@1803 926 }
adam@1803 927
adamc@1260 928 var table = x.parentNode;
adamc@1260 929
adamc@1260 930 if (table) {
adamc@1260 931 var arr = dummy.getElementsByTagName("tr");
adamc@1260 932 firstChild = null;
adamc@1260 933 var tr;
adamc@1260 934 if (arr.length > 0 && table != null)
adamc@1260 935 tr = arr[0];
adamc@1260 936 else
adamc@1260 937 tr = dummy.firstChild;
adamc@1260 938
adamc@1260 939 var next;
adamc@1260 940 firstChild = document.createElement("script");
adamc@1260 941 table.insertBefore(firstChild, x);
adamc@1260 942 for (var node = tr.firstChild; node; node = next) {
adamc@1260 943 next = node.nextSibling;
adamc@1260 944 table.insertBefore(node, x);
adam@1803 945 suspendScripts = false;
adam@1803 946 runScripts(node);
adam@1803 947 suspendScripts = true;
adamc@1260 948 }
adam@1803 949 };
adam@1803 950
adam@1803 951 suspendScripts = false;
adamc@1260 952 } else {
adamc@1260 953 firstChild = document.createElement("span");
adam@1803 954
adam@1803 955 suspendScripts = true;
adam@1803 956 try {
adam@1803 957 firstChild.innerHTML = html;
adam@1803 958 if (x.parentNode)
adam@1803 959 x.parentNode.insertBefore(firstChild, x);
adam@1803 960 } catch (e) {
adam@1803 961 suspendScripts = false;
adam@1803 962 throw e;
adam@1803 963 }
adam@1803 964 suspendScripts = false;
adam@1802 965 runScripts(firstChild);
adamc@903 966 }
adamc@1260 967 };
adamc@899 968
adamc@1260 969 addNode(x);
adamc@1260 970 populate(x);
adamc@571 971 }
adamc@582 972
adam@1702 973 function setInnerHTML(node, html) {
adam@1702 974 var x;
adam@1702 975
adam@1702 976 if (node.previousSibling && node.previousSibling.closures != undefined) {
adam@1702 977 x = node.previousSibling;
adam@1702 978
adam@1702 979 for (var ls = x.closures; ls; ls = ls.next)
adam@1702 980 freeClosure(ls.data);
adam@1702 981
adam@1702 982 if (node.getElementsByTagName) {
adam@1702 983 var arr = node.getElementsByTagName("script");
adam@1702 984 for (var i = 0; i < arr.length; ++i)
adam@1702 985 killScript(arr[i]);
adam@1702 986 }
adam@1702 987 } else {
adam@1702 988 x = document.createElement("script");
adam@1702 989 x.dead = false;
adam@1702 990 x.sources = null;
adam@1702 991
adam@1702 992 if (node.parentNode)
adam@1702 993 node.parentNode.insertBefore(x, node);
adam@1702 994 else
adam@1702 995 whine("setInnerHTML: node is not already in the DOM tree");
adam@1702 996 }
adam@1702 997
adam@1702 998 var cls = {v : null};
adam@1702 999 var html = flatten(cls, html);
adam@1702 1000 x.closures = cls.v;
adam@1803 1001 suspendScripts = true;
adam@1702 1002 node.innerHTML = html;
adam@1803 1003 suspendScripts = false;
adam@1702 1004 runScripts(node);
adam@1702 1005 }
adam@1702 1006
adam@1792 1007 var maySuspend = true;
adam@1792 1008
adam@1786 1009 function active(s) {
adam@1803 1010 if (suspendScripts)
adam@1803 1011 return;
adam@1803 1012
adam@1786 1013 var span = document.createElement("span");
adam@1786 1014 addNode(span);
adam@1792 1015 var ms = maySuspend;
adam@1792 1016 maySuspend = false;
adam@1792 1017 try {
adam@1792 1018 var html = execF(s);
adam@1792 1019 } catch (e) {
adam@1792 1020 maySuspend = ms;
adam@1792 1021 throw e;
adam@1792 1022 }
adam@1792 1023 maySuspend = ms;
adam@1792 1024 setInnerHTML(span, html);
adam@1786 1025 }
adam@1786 1026
adam@1463 1027 function input(x, s, recreate, type, name) {
adam@1463 1028 if (name) x.name = name;
adamc@1260 1029 if (type) x.type = type;
adamc@1260 1030 x.dead = false;
adamc@1260 1031 x.signal = ss(s);
adamc@1260 1032 x.sources = null;
adamc@1260 1033 x.recreate = recreate(x);
adamc@1260 1034 addNode(x);
adamc@1260 1035 populate(x);
adamc@816 1036
adamc@1260 1037 return x;
adamc@816 1038 }
adamc@816 1039
adam@1463 1040 function inp(s, name) {
adam@1803 1041 if (suspendScripts)
adam@1803 1042 return;
adam@1803 1043
adamc@1260 1044 var x = input(document.createElement("input"), s,
adam@1835 1045 function(x) { return function(v) { if (x.value != v) x.value = v; }; }, "text", name);
adamc@1260 1046 x.value = s.data;
adam@1491 1047 x.onkeyup = x.oninput = x.onchange = x.onpropertychange = function() { sv(s, x.value) };
adamc@816 1048
adamc@1260 1049 return x;
adamc@816 1050 }
adamc@816 1051
adam@1479 1052 function selectValue(x) {
adam@1479 1053 if (x.options.length == 0)
adam@1479 1054 return "";
adam@1479 1055 else
adam@1479 1056 return x.options[x.selectedIndex].value;
adam@1479 1057 }
adam@1479 1058
adam@1479 1059 function setSelectValue(x, v) {
adam@1479 1060 for (var i = 0; i < x.options.length; ++i) {
adam@1479 1061 if(x.options[i].value == v) {
adam@1479 1062 x.selectedIndex = i;
adam@1479 1063 return;
adam@1479 1064 }
adam@1479 1065 }
adam@1479 1066 }
adam@1479 1067
adamc@816 1068 function sel(s, content) {
adam@1803 1069 if (suspendScripts)
adam@1803 1070 return;
adam@1803 1071
adamc@1260 1072 var dummy = document.createElement("span");
adamc@1260 1073 dummy.innerHTML = "<select>" + content + "</select>";
adam@1479 1074 var x = input(dummy.firstChild, s, function(x) { return function(v) { if (selectValue(x) != v) setSelectValue(x, v); }; });
adam@1479 1075
adam@1479 1076 for (var i = 0; i < x.options.length; ++i) {
adam@1479 1077 if (x.options[i].value == "")
adam@1479 1078 x.options[i].value = x.options[i].text;
adam@1479 1079 else
adam@1479 1080 x.options[i].value = x.options[i].value.substring(1);
adam@1479 1081 }
adam@1479 1082
adam@1479 1083 setSelectValue(x, s.data);
adam@1479 1084 if (selectValue(x) != s.data)
adam@1479 1085 sv(s, selectValue(x));
adam@1479 1086 x.onchange = function() { sv(s, selectValue(x)) };
adamc@797 1087
adamc@1260 1088 return x;
adamc@598 1089 }
adamc@598 1090
adamc@817 1091 function chk(s) {
adam@1803 1092 if (suspendScripts)
adam@1803 1093 return;
adam@1803 1094
adamc@1260 1095 var x = input(document.createElement("input"), s,
adamc@1260 1096 function(x) { return function(v) { if (x.checked != v) x.checked = v; }; }, "checkbox");
adamc@1260 1097 x.defaultChecked = x.checked = s.data;
adam@1610 1098 x.onclick = x.onkeyup = x.oninput = x.onchange = x.onpropertychange = function() { sv(s, x.checked) };
adamc@817 1099
adamc@1260 1100 return x;
adamc@817 1101 }
adamc@817 1102
adamc@1099 1103 function tbx(s) {
adam@1803 1104 if (suspendScripts)
adam@1803 1105 return;
adam@1803 1106
adamc@1260 1107 var x = input(document.createElement("textarea"), s,
adam@1781 1108 function(x) { return function(v) { if (x.value != v) x.value = v; }; });
adamc@1260 1109 x.innerHTML = s.data;
adam@1491 1110 x.onkeyup = x.oninput = x.onchange = x.onpropertychange = function() { sv(s, x.value) };
adamc@1099 1111
adamc@1260 1112 return x;
adamc@1099 1113 }
adamc@1099 1114
adam@1751 1115 function dynClass(html, s_class, s_style) {
adam@1803 1116 if (suspendScripts)
adam@1803 1117 return;
adam@1803 1118
adam@1643 1119 var htmlCls = {v : null};
adam@1643 1120 html = flatten(htmlCls, html);
adam@1643 1121 htmlCls = htmlCls.v;
adam@1643 1122
adam@1643 1123 var dummy = document.createElement("body");
adam@1803 1124 suspendScripts = true;
adam@1643 1125 dummy.innerHTML = html;
adam@1803 1126 suspendScripts = false;
adam@1643 1127 var html = dummy.firstChild;
adam@1643 1128 dummy.removeChild(html);
adam@1643 1129 addNode(html);
adam@1792 1130 runScripts(html);
adam@1643 1131
adam@1751 1132 if (s_class) {
adam@1751 1133 var x = document.createElement("script");
adam@1751 1134 x.dead = false;
adam@1751 1135 x.signal = s_class;
adam@1751 1136 x.sources = null;
adam@1751 1137 x.closures = htmlCls;
phurst@1986 1138
adam@1751 1139 x.recreate = function(v) {
adam@1751 1140 for (var ls = x.closures; ls != htmlCls; ls = ls.next)
adam@1751 1141 freeClosure(ls.data);
adam@1643 1142
adam@1751 1143 var cls = {v : null};
adam@1751 1144 html.className = flatten(cls, v);
adam@1751 1145 x.closures = concat(cls.v, htmlCls);
adam@1751 1146 }
adam@1643 1147
vshabanoff@1811 1148 html.appendChild(x);
adam@1751 1149 populate(x);
adam@1751 1150 }
adam@1751 1151
adam@1751 1152 if (s_style) {
vshabanoff@1811 1153 var htmlCls2 = s_class ? null : htmlCls;
adam@1751 1154 var x = document.createElement("script");
adam@1751 1155 x.dead = false;
adam@1751 1156 x.signal = s_style;
adam@1751 1157 x.sources = null;
vshabanoff@1811 1158 x.closures = htmlCls2;
phurst@1986 1159
adam@1751 1160 x.recreate = function(v) {
vshabanoff@1811 1161 for (var ls = x.closures; ls != htmlCls2; ls = ls.next)
adam@1751 1162 freeClosure(ls.data);
adam@1751 1163
adam@1751 1164 var cls = {v : null};
adam@1751 1165 html.style.cssText = flatten(cls, v);
vshabanoff@1811 1166 x.closures = concat(cls.v, htmlCls2);
adam@1751 1167 }
adam@1751 1168
vshabanoff@1811 1169 html.appendChild(x);
adam@1751 1170 populate(x);
adam@1751 1171 }
adam@1643 1172 }
adam@1643 1173
adamc@800 1174 function addOnChange(x, f) {
adamc@1260 1175 var old = x.onchange;
adam@1290 1176 if (old == null)
adam@1290 1177 x.onchange = f;
adam@1290 1178 else
adam@1290 1179 x.onchange = function() { old(); f(); };
adam@1290 1180 }
adam@1290 1181
adam@1290 1182 function addOnKeyUp(x, f) {
adam@1290 1183 var old = x.onkeyup;
adam@1290 1184 if (old == null)
adam@1290 1185 x.onkeyup = f;
adam@1290 1186 else
adam@1290 1187 x.onkeyup = function(x) { old(x); f(x); };
adamc@800 1188 }
adamc@800 1189
adamc@692 1190
adamc@692 1191 // Basic string operations
adamc@692 1192
adamc@597 1193 function eh(x) {
adamc@1260 1194 if (x == null)
adamc@1260 1195 return "NULL";
adamc@1260 1196 else
adamc@1260 1197 return x.split("&").join("&amp;").split("<").join("&lt;").split(">").join("&gt;");
adamc@597 1198 }
adamc@597 1199
adamc@582 1200 function ts(x) { return x.toString() }
adamc@586 1201 function bs(b) { return (b ? "True" : "False") }
adamc@586 1202
adamc@1057 1203 function id(x) { return x; }
adamc@1038 1204 function sub(s, i) { return s.charAt(i); }
adamc@828 1205 function suf(s, i) { return s.substring(i); }
adamc@828 1206 function slen(s) { return s.length; }
adamc@829 1207 function sidx(s, ch) {
adamc@1260 1208 var r = s.indexOf(ch);
adamc@1260 1209 if (r == -1)
adamc@1260 1210 return null;
adamc@1260 1211 else
adamc@1260 1212 return r;
adamc@829 1213 }
adamc@831 1214 function sspn(s, chs) {
adamc@1260 1215 for (var i = 0; i < s.length; ++i)
adamc@1260 1216 if (chs.indexOf(s.charAt(i)) != -1)
adamc@1260 1217 return i;
adamc@831 1218
adam@1793 1219 return s.length;
adamc@831 1220 }
adamc@829 1221 function schr(s, ch) {
adamc@1260 1222 var r = s.indexOf(ch);
adamc@1260 1223 if (r == -1)
adamc@1260 1224 return null;
adamc@1260 1225 else
adamc@1260 1226 return s.substring(r);
adamc@829 1227 }
adamc@829 1228 function ssub(s, start, len) {
adamc@1260 1229 return s.substring(start, start+len);
adamc@829 1230 }
adam@1624 1231 function strlenGe(s, len) {
adam@1624 1232 return s.length >= len;
adam@1624 1233 }
adamc@821 1234
adam@1621 1235 function trimZeroes(s) {
adam@1621 1236 for (var i = 0; i < s.length; ++i)
adam@1632 1237 if (s.charAt(i) != '0') {
adam@1621 1238 if (i > 0)
adam@1621 1239 return s.substring(i);
adam@1621 1240 else
adam@1621 1241 return s;
adam@1621 1242 }
adam@1621 1243
adam@1631 1244 if (s.length == 0)
adam@1621 1245 return s;
adam@1621 1246 else
adam@1631 1247 return "0";
adam@1621 1248 }
adam@1621 1249
adamc@649 1250 function pi(s) {
adam@1631 1251 var st = trimZeroes(s);
adam@1631 1252 var r = parseInt(st);
adam@1631 1253 if (r.toString() == st)
adamc@1260 1254 return r;
adamc@1260 1255 else
adamc@1260 1256 er("Can't parse int: " + s);
adamc@649 1257 }
adamc@649 1258
adamc@649 1259 function pfl(s) {
adamc@1260 1260 var r = parseFloat(s);
adamc@1260 1261 if (r.toString() == s)
adamc@1260 1262 return r;
adamc@1260 1263 else
adamc@1260 1264 er("Can't parse float: " + s);
adamc@649 1265 }
adamc@649 1266
adamc@838 1267 function pio(s) {
adam@1631 1268 var st = trimZeroes(s);
adam@1631 1269 var r = parseInt(st);
adam@1631 1270 if (r.toString() == st)
adamc@1260 1271 return r;
adamc@1260 1272 else
adamc@1260 1273 return null;
adamc@838 1274 }
adamc@838 1275
adamc@838 1276 function pflo(s) {
adamc@1260 1277 var r = parseFloat(s);
adamc@1260 1278 if (r.toString() == s)
adamc@1260 1279 return r;
adamc@1260 1280 else
adamc@1260 1281 return null;
adamc@838 1282 }
adamc@838 1283
adam@1620 1284 function parseSource(s1, s2) {
adam@1620 1285 return eval("s" + s1 + "_" + s2);
adam@1620 1286 }
adam@1620 1287
adamc@692 1288 function uf(s) {
adamc@1260 1289 if (s.length == 0)
adamc@1260 1290 return "_";
vshabanoff@1813 1291 s = s.replace(/\./g, ".2E");
vshabanoff@1813 1292 return (s.charAt(0) == '_' ? "_" : "") + encodeURIComponent(s).replace(/%/g, ".");
adamc@691 1293 }
adamc@691 1294
adamc@692 1295 function uu(s) {
adamc@1260 1296 if (s.length > 0 && s.charAt(0) == '_') {
adamc@1260 1297 s = s.substring(1);
adamc@1260 1298 } else if (s.length >= 3 && (s.charAt(0) == '%' || s.charAt(0) == '.')
adamc@1260 1299 && s.charAt(1) == '5' && (s.charAt(2) == 'f' || s.charAt(2) == 'F'))
adamc@1260 1300 s = s.substring(3);
vshabanoff@1813 1301 s = s.replace(/\+/g, " ");
vshabanoff@1813 1302 s = s.replace(/\./g, "%");
adamc@1260 1303 return decodeURIComponent(s);
adamc@905 1304 }
adamc@905 1305
adamc@1108 1306 function atr(s) {
vshabanoff@1813 1307 return s.replace(/\"/g, "&quot;").replace(/&/g, "&amp;")
vshabanoff@1813 1308 }
adamc@1108 1309
adamc@912 1310 function ub(b) {
adamc@1260 1311 return b ? "1" : "0";
adamc@912 1312 }
adamc@912 1313
adamc@905 1314 function uul(getToken, getData) {
adamc@1260 1315 var tok = getToken();
adamc@1260 1316 if (tok == "Nil") {
adamc@1260 1317 return null;
adamc@1260 1318 } else if (tok == "Cons") {
adamc@1260 1319 var d = getData();
adamc@1260 1320 var l = uul(getToken, getData);
adamc@1260 1321 return {_1:d, _2:l};
adamc@1260 1322 } else
adamc@1260 1323 whine("Can't unmarshal list (" + tok + ")");
adamc@692 1324 }
adamc@692 1325
adamc@961 1326 function strcmp(str1, str2) {
adamc@1260 1327 return ((str1 == str2) ? 0 : ((str1 > str2) ? 1 : -1));
adamc@961 1328 }
adamc@692 1329
adamc@603 1330
adamc@692 1331 // Remote calls
adamc@609 1332
adamc@703 1333 var client_id = null;
adamc@668 1334 var client_pass = 0;
adamc@668 1335 var url_prefix = "/";
adamc@673 1336 var timeout = 60;
adam@1552 1337 var isPost = false;
adamc@668 1338
adamc@668 1339 function getXHR(uri)
adamc@609 1340 {
adamc@609 1341 try {
adamc@1260 1342 return new XMLHttpRequest();
adamc@609 1343 } catch (e) {
adamc@1260 1344 try {
adamc@1260 1345 return new ActiveXObject("Msxml2.XMLHTTP");
adamc@1260 1346 } catch (e) {
adamc@1260 1347 try {
adamc@1260 1348 return new ActiveXObject("Microsoft.XMLHTTP");
adamc@1260 1349 } catch (e) {
adamc@1260 1350 whine("Your browser doesn't seem to support AJAX.");
adamc@1260 1351 }
adamc@1260 1352 }
adamc@609 1353 }
adamc@609 1354 }
adamc@609 1355
adamc@736 1356 var sig = null;
adamc@736 1357
adamc@1042 1358 var unloading = false, inFlight = null;
adamc@1042 1359
adamc@1042 1360 function unload() {
adamc@1260 1361 for (; inFlight; inFlight = inFlight.next) {
adamc@1260 1362 inFlight.data.abort();
adamc@1260 1363 }
adamc@1042 1364 }
adamc@1042 1365
adam@1691 1366 function requestUri(xhr, uri, needsSig, isRpc) {
adam@1691 1367 var extraData = null;
adam@1691 1368
adam@1691 1369 if (isRpc && uri.length > 2000) {
adam@1691 1370 extraData = uri.substring(2000);
adam@1691 1371 uri = uri.substring(0, 2000);
adam@1691 1372 }
adam@1691 1373
vshabanoff@1763 1374 xhr.open("POST", uri, !unloading);
adamc@1260 1375 xhr.setRequestHeader("Content-type", "text/plain");
adamc@668 1376
adamc@1260 1377 if (client_id != null) {
adamc@1260 1378 xhr.setRequestHeader("UrWeb-Client", client_id.toString());
adamc@1260 1379 xhr.setRequestHeader("UrWeb-Pass", client_pass.toString());
adamc@1260 1380 }
adamc@668 1381
adamc@1260 1382 if (needsSig) {
adamc@1260 1383 if (sig == null)
adamc@1260 1384 whine("Missing cookie signature!");
adamc@736 1385
adamc@1260 1386 xhr.setRequestHeader("UrWeb-Sig", sig);
adamc@1260 1387 }
adamc@736 1388
adamc@1260 1389 inFlight = cons(xhr, inFlight);
adam@1691 1390 xhr.send(extraData);
adamc@668 1391 }
adamc@668 1392
adamc@1042 1393 function xhrFinished(xhr) {
adamc@1260 1394 xhr.abort();
adamc@1260 1395 inFlight = remove(xhr, inFlight);
adamc@1042 1396 }
adamc@1042 1397
adamc@1111 1398 function unurlify(parse, s) {
adamc@1260 1399 return parse(s);
adamc@1111 1400 }
adamc@1111 1401
adam@1385 1402 function redirect(s) {
adam@1385 1403 window.location = s;
adam@1385 1404 }
adam@1385 1405
adam@1848 1406 function makeSome(isN, v) {
adam@1848 1407 if (isN)
adam@1848 1408 return {v: v};
adam@1848 1409 else
adam@1848 1410 return v;
adam@1848 1411 }
adam@1848 1412
adam@1848 1413 function rc(prefix, uri, parse, k, needsSig, isN) {
adam@1792 1414 if (!maySuspend)
adam@1794 1415 er("May not 'rpc' in main thread of 'code' for <active>");
adam@1792 1416
adamc@1260 1417 uri = cat(prefix, uri);
adamc@1260 1418 uri = flattenLocal(uri);
adamc@1260 1419 var xhr = getXHR();
adamc@609 1420
adamc@1260 1421 xhr.onreadystatechange = function() {
adamc@1260 1422 if (xhr.readyState == 4) {
adamc@1260 1423 var isok = false;
adamc@612 1424
adamc@1260 1425 try {
adamc@1260 1426 if (xhr.status == 200)
adamc@1260 1427 isok = true;
adamc@1260 1428 } catch (e) { }
adamc@612 1429
adamc@1260 1430 if (isok) {
adam@1446 1431 var lines = xhr.responseText.split("\n");
adam@1848 1432 if (lines.length != 2) {
adam@1848 1433 if (isN == null)
adam@1848 1434 whine("Bad RPC response lines");
adam@1848 1435 else
adam@1848 1436 k(null);
adam@1848 1437 } else {
adam@1848 1438 eval(lines[0]);
adam@1446 1439
adam@1848 1440 try {
adam@1848 1441 var v = parse(lines[1]);
adam@1848 1442 try {
adam@1848 1443 k(makeSome(isN, v));
adam@1848 1444 } catch (v) {
adam@1848 1445 doExn(v);
adam@1848 1446 }
adam@1848 1447 } catch (v) {
adam@1848 1448 k(null);
adam@1848 1449 }
adamc@1260 1450 }
adamc@1260 1451 } else {
adam@1848 1452 if (isN == null)
adam@1848 1453 conn();
adam@1848 1454 else
adam@1848 1455 k(null);
adamc@1260 1456 }
adamc@1260 1457
adamc@1260 1458 xhrFinished(xhr);
adamc@729 1459 }
adamc@1260 1460 };
adamc@1042 1461
adam@1691 1462 requestUri(xhr, uri, needsSig, true);
adamc@609 1463 }
adamc@667 1464
adamc@667 1465 function path_join(s1, s2) {
adamc@1260 1466 if (s1.length > 0 && s1.charAt(s1.length-1) == '/')
adamc@1260 1467 return s1 + s2;
adamc@1260 1468 else
adamc@1260 1469 return s1 + "/" + s2;
adamc@667 1470 }
adamc@667 1471
adamc@670 1472 var channels = [];
adamc@670 1473
adamc@670 1474 function newQueue() {
adamc@1260 1475 return { front : null, back : null };
adamc@670 1476 }
adamc@670 1477 function enqueue(q, v) {
adamc@1260 1478 if (q.front == null) {
adamc@1260 1479 q.front = cons(v, null);
adamc@1260 1480 q.back = q.front;
adamc@1260 1481 } else {
adamc@1260 1482 var node = cons(v, null);
adamc@1260 1483 q.back.next = node;
adamc@1260 1484 q.back = node;
adamc@1260 1485 }
adamc@670 1486 }
adamc@670 1487 function dequeue(q) {
adamc@670 1488 if (q.front == null)
adamc@1260 1489 return null;
adamc@1260 1490 else {
adamc@1260 1491 var r = q.front.data;
adamc@1260 1492 q.front = q.front.next;
adamc@1260 1493 if (q.front == null)
adamc@1260 1494 q.back = null;
adamc@1260 1495 return r;
adamc@1260 1496 }
adamc@670 1497 }
adamc@670 1498
adamc@670 1499 function newChannel() {
adamc@1260 1500 return { msgs : newQueue(), listeners : newQueue() };
adamc@670 1501 }
adamc@670 1502
adamc@667 1503 function listener() {
adamc@1260 1504 var uri = path_join(url_prefix, ".msgs");
adamc@1260 1505 var xhr = getXHR();
adamc@1260 1506 var tid, orsc, onTimeout;
adamc@673 1507
adamc@1260 1508 var connect = function () {
adamc@1260 1509 xhr.onreadystatechange = orsc;
adamc@1260 1510 tid = window.setTimeout(onTimeout, timeout * 500);
adam@1691 1511 requestUri(xhr, uri, false, false);
adamc@1260 1512 }
adamc@673 1513
adamc@1260 1514 orsc = function() {
adamc@1260 1515 if (xhr.readyState == 4) {
adamc@1260 1516 window.clearTimeout(tid);
adamc@673 1517
adamc@1260 1518 var isok = false;
adamc@667 1519
adamc@1260 1520 try {
adamc@1260 1521 if (xhr.status == 200)
adamc@1260 1522 isok = true;
adamc@1260 1523 } catch (e) { }
adamc@667 1524
adamc@1260 1525 if (isok) {
adam@1447 1526 var text = xhr.responseText;
adamc@1260 1527 if (text == "")
adamc@1260 1528 return;
adamc@1260 1529 var lines = text.split("\n");
adamc@889 1530
adam@1552 1531 if (lines.length == 1 && lines[0] == "R") {
adam@1553 1532 lameDuck = true;
adam@1553 1533
adam@1552 1534 if (isPost)
adam@1552 1535 history.back();
adam@1552 1536 else
adam@1552 1537 location.reload();
adam@1552 1538
adam@1552 1539 return;
adam@1552 1540 }
adam@1552 1541
adamc@1260 1542 if (lines.length < 2) {
adamc@1260 1543 discon();
adamc@1260 1544 return;
adamc@1260 1545 }
adamc@1260 1546
adam@1447 1547 var messageReader = function(i) {
adam@1447 1548 if (i+1 >= lines.length) {
adam@1447 1549 xhrFinished(xhr);
adam@1447 1550 connect();
adam@1447 1551 }
adam@1447 1552 else {
adam@1447 1553 var chn = lines[i];
adam@1447 1554 var msg = lines[i+1];
adamc@1260 1555
adam@1447 1556 if (chn == "E") {
adam@1447 1557 eval(msg);
adam@1447 1558 window.setTimeout(function() { messageReader(i+2); }, 0);
adam@1447 1559 } else {
adam@1447 1560 if (chn < 0)
adam@1447 1561 whine("Out-of-bounds channel in message from remote server");
adamc@1260 1562
adam@1447 1563 var ch;
adamc@1260 1564
adam@1447 1565 if (chn >= channels.length || channels[chn] == null) {
adam@1447 1566 ch = newChannel();
adam@1447 1567 channels[chn] = ch;
adam@1447 1568 } else
adam@1447 1569 ch = channels[chn];
adamc@1260 1570
adam@1447 1571 var listener = dequeue(ch.listeners);
adam@1447 1572 if (listener == null) {
adam@1447 1573 enqueue(ch.msgs, msg);
adam@1447 1574 } else {
adam@1447 1575 try {
adam@1447 1576 listener(msg);
adam@1447 1577 } catch (v) {
adam@1447 1578 doExn(v);
adam@1447 1579 }
adam@1447 1580 }
adam@1447 1581
adam@1447 1582 messageReader(i+2);
adamc@1260 1583 }
adamc@1260 1584 }
adamc@1260 1585 }
adamc@1260 1586
adam@1447 1587 messageReader(0);
adamc@1260 1588 }
adamc@1260 1589 else {
adamc@1260 1590 try {
adamc@1260 1591 if (xhr.status != 0)
adamc@1260 1592 servErr("Error querying remote server for messages: " + xhr.status);
adamc@1260 1593 } catch (e) { }
adamc@1260 1594 }
adamc@729 1595 }
adamc@1260 1596 };
adamc@669 1597
adamc@1260 1598 onTimeout = function() {
adamc@1260 1599 xhrFinished(xhr);
adamc@1260 1600 connect();
adamc@1260 1601 };
adamc@670 1602
adamc@673 1603 connect();
adamc@667 1604 }
adamc@670 1605
adamc@670 1606 function rv(chn, parse, k) {
adam@1792 1607 if (!maySuspend)
adam@1794 1608 er("May not 'recv' in main thread of 'code' for <active>");
adam@1792 1609
adamc@1260 1610 if (chn == null)
adam@1942 1611 er("Client-side code tried to recv() from a channel belonging to a different page view.");
adamc@682 1612
adamc@1260 1613 if (chn < 0)
adamc@1260 1614 whine("Out-of-bounds channel receive");
adamc@670 1615
adamc@1260 1616 var ch;
adamc@670 1617
adamc@1260 1618 if (chn >= channels.length || channels[chn] == null) {
adamc@1260 1619 ch = newChannel();
adamc@1260 1620 channels[chn] = ch;
adamc@1260 1621 } else
adamc@1260 1622 ch = channels[chn];
adamc@670 1623
adamc@1260 1624 var msg = dequeue(ch.msgs);
adamc@1260 1625 if (msg == null) {
adamc@1260 1626 enqueue(ch.listeners, function(msg) { k(parse(msg)); });
adamc@1260 1627 } else {
adamc@1260 1628 try {
adamc@1260 1629 k(parse(msg));
adamc@1260 1630 } catch (v) {
adamc@1260 1631 doExn(v);
adamc@1260 1632 }
adamc@728 1633 }
adamc@670 1634 }
adamc@693 1635
adamc@978 1636 function sl(ms, k) {
adam@1792 1637 if (!maySuspend)
adam@1794 1638 er("May not 'sleep' in main thread of 'code' for <active>");
adam@1792 1639
adamc@1260 1640 window.setTimeout(function() { k(null); }, ms);
adamc@1021 1641 }
adamc@1021 1642
adamc@1021 1643 function sp(e) {
adam@1794 1644 window.setTimeout(function() { execF(e); }, 0);
adamc@978 1645 }
adamc@978 1646
adamc@693 1647
adamc@970 1648 // The Ur interpreter
adamc@970 1649
adamc@970 1650 var urfuncs = [];
adamc@970 1651
adamc@970 1652 function lookup(env, n) {
adamc@1260 1653 while (env != null) {
adamc@1260 1654 if (n == 0)
adamc@1260 1655 return env.data;
adamc@1260 1656 else {
adamc@1260 1657 --n;
adamc@1260 1658 env = env.next;
adamc@1260 1659 }
adamc@970 1660 }
adamc@970 1661
adamc@1260 1662 whine("Out-of-bounds Ur variable reference");
adamc@970 1663 }
adamc@970 1664
adamc@974 1665 function execP(env, p, v) {
adamc@1260 1666 switch (p.c) {
adamc@1260 1667 case "w":
adamc@1260 1668 return env;
adamc@1260 1669 case "v":
adamc@1260 1670 return cons(v, env);
adamc@1260 1671 case "c":
adamc@1260 1672 if (v == p.v)
adamc@1260 1673 return env;
adamc@1260 1674 else
adamc@1260 1675 return false;
adamc@1260 1676 case "s":
adamc@1260 1677 if (v == null)
adamc@1260 1678 return false;
adamc@1260 1679 else
adamc@1260 1680 return execP(env, p.p, p.n ? v.v : v);
adamc@1260 1681 case "1":
adamc@1260 1682 if (v.n != p.n)
adamc@1260 1683 return false;
adamc@1260 1684 else
adamc@1260 1685 return execP(env, p.p, v.v);
adamc@1260 1686 case "r":
adamc@1260 1687 for (var fs = p.l; fs != null; fs = fs.next) {
adamc@1260 1688 env = execP(env, fs.data.p, v["_" + fs.data.n]);
adamc@1260 1689 if (env == false)
adamc@1260 1690 return false;
adamc@1260 1691 }
adamc@1260 1692 return env;
adamc@1260 1693 default:
adamc@1260 1694 whine("Unknown Ur pattern kind" + p.c);
adamc@974 1695 }
adamc@974 1696 }
adamc@974 1697
adamc@970 1698 function exec0(env, e) {
adamc@1260 1699 return exec1(env, null, e);
adamc@1020 1700 }
adamc@1020 1701
adamc@1020 1702 function exec1(env, stack, e) {
adamc@1260 1703 var stack, usedK = false;
adamc@970 1704
adamc@1260 1705 var saveEnv = function() {
adamc@1260 1706 if (stack.next != null && stack.next.data.c != "<")
adamc@1260 1707 stack = cons({c: "<", env: env}, stack.next);
adamc@1260 1708 else
adamc@1260 1709 stack = stack.next;
adamc@1260 1710 };
adamc@983 1711
adamc@1260 1712 while (true) {
adamc@1260 1713 switch (e.c) {
adamc@1260 1714 case "c":
adamc@1260 1715 var v = e.v;
adamc@1260 1716 if (stack == null)
adamc@1260 1717 return v;
adamc@1260 1718 var fr = stack.data;
adamc@970 1719
adamc@1260 1720 switch (fr.c) {
adamc@1260 1721 case "s":
adamc@1260 1722 e = {c: "c", v: {v: v}};
adamc@1260 1723 stack = stack.next;
adamc@1260 1724 break;
adamc@1260 1725 case "1":
adamc@1260 1726 e = {c: "c", v: {n: fr.n, v: v}};
adamc@1260 1727 stack = stack.next;
adamc@1260 1728 break;
adamc@1260 1729 case "f":
adamc@1260 1730 fr.args[fr.pos++] = v;
adamc@1260 1731 if (fr.a == null) {
adamc@1260 1732 var res;
adamc@1260 1733 stack = stack.next;
adamc@1035 1734
adamc@1260 1735 if (fr.f.apply)
adamc@1260 1736 res = fr.f.apply(null, fr.args);
adamc@1260 1737 else if (fr.args.length == 0)
adamc@1260 1738 res = fr.f();
adamc@1260 1739 else if (fr.args.length == 1)
adamc@1260 1740 res = fr.f(fr.args[0]);
adamc@1260 1741 else if (fr.args.length == 2)
adamc@1260 1742 res = fr.f(fr.args[0], fr.args[1]);
adamc@1260 1743 else if (fr.args.length == 3)
adamc@1260 1744 res = fr.f(fr.args[0], fr.args[1], fr.args[2]);
adamc@1260 1745 else if (fr.args.length == 4)
adamc@1260 1746 res = fr.f(fr.args[0], fr.args[1], fr.args[2], fr.args[3]);
adamc@1260 1747 else if (fr.args.length == 5)
adamc@1260 1748 res = fr.f(fr.args[0], fr.args[1], fr.args[2], fr.args[3], fr.args[4]);
adamc@1260 1749 else
adamc@1260 1750 whine("Native function has " + fr.args.length + " args, but there is no special case for that count.");
adamc@1035 1751
adamc@1260 1752 e = {c: "c", v: res};
adamc@1260 1753 if (usedK) return null;
adamc@1260 1754 } else {
adamc@1260 1755 e = fr.a.data;
adamc@1260 1756 fr.a = fr.a.next;
adamc@1260 1757 }
adamc@1260 1758 break;
adamc@1260 1759 case "a1":
adamc@1260 1760 e = fr.x;
adamc@1260 1761 stack = cons({c: "a2", f: v}, stack.next);
adamc@1260 1762 break;
adamc@1260 1763 case "a2":
adamc@1260 1764 if (fr.f == null)
adamc@1260 1765 whine("Ur: applying null function");
adamc@1260 1766 else if (fr.f.body) {
adamc@1260 1767 saveEnv();
adamc@1260 1768 env = cons(v, fr.f.env);
adamc@1260 1769 e = fr.f.body;
adamc@1260 1770 } else {
adamc@1260 1771 e = {c: "c", v: fr.f(v)};
adamc@1260 1772 stack = stack.next;
adamc@1260 1773 }
adamc@1260 1774 break;
adamc@1260 1775 case "<":
adamc@1260 1776 env = fr.env;
adamc@1260 1777 stack = stack.next;
adamc@1260 1778 break;
adamc@1260 1779 case "r":
adamc@1260 1780 fr.fs["_" + fr.n] = v;
adamc@1260 1781 if (fr.l == null) {
adamc@1260 1782 e = {c: "c", v: fr.fs};
adamc@1260 1783 stack = stack.next;
adamc@1260 1784 } else {
adamc@1260 1785 fr.n = fr.l.data.n;
adamc@1260 1786 e = fr.l.data.v;
adamc@1260 1787 fr.l = fr.l.next;
adamc@1260 1788 }
adamc@1260 1789 break;
adamc@1260 1790 case ".":
adamc@1260 1791 e = {c: "c", v: v["_" + fr.f]};
adamc@1260 1792 stack = stack.next;
adamc@1260 1793 break;
adamc@1260 1794 case ";":
adamc@1260 1795 e = fr.e2;
adamc@1260 1796 stack = stack.next;
adamc@1260 1797 break;
adamc@1260 1798 case "=":
adamc@1260 1799 saveEnv();
adamc@1260 1800 env = cons(v, env);
adamc@1260 1801 e = fr.e2;
adamc@1260 1802 break;
adamc@1260 1803 case "m":
adamc@1260 1804 var ps;
adamc@1260 1805 for (ps = fr.p; ps != null; ps = ps.next) {
adamc@1260 1806 var r = execP(env, ps.data.p, v);
adamc@1260 1807 if (r != false) {
adamc@1260 1808 saveEnv();
adamc@1260 1809 env = r;
adamc@1260 1810 e = ps.data.b;
adamc@1260 1811 break;
adamc@1260 1812 }
adamc@1260 1813 }
adamc@1260 1814 if (ps == null)
adamc@1260 1815 whine("Match failure in Ur interpretation");
adamc@1260 1816 break;
adamc@1260 1817 default:
adamc@1260 1818 whine("Unknown Ur continuation kind " + fr.c);
adamc@1260 1819 }
adamc@1260 1820
adamc@1260 1821 break;
adamc@1260 1822 case "v":
adamc@1260 1823 e = {c: "c", v: lookup(env, e.n)};
adamc@1260 1824 break;
adamc@1260 1825 case "n":
adamc@1260 1826 var idx = e.n;
adamc@1260 1827 e = urfuncs[idx];
adamc@1260 1828 if (e.c == "t")
adamc@1262 1829 e = urfuncs[idx] = eval("(" + e.f + ")");
adamc@1260 1830 break;
adamc@1260 1831 case "s":
adamc@1260 1832 stack = cons({c: "s"}, stack);
adamc@1260 1833 e = e.v;
adamc@1260 1834 break;
adamc@1260 1835 case "1":
adamc@1260 1836 stack = cons({c: "1", n: e.n}, stack);
adamc@1260 1837 e = e.v;
adamc@1260 1838 break;
adamc@1260 1839 case "f":
adamc@1260 1840 if (e.a == null)
adam@1798 1841 e = {c: "c", v: e.f()};
adamc@1260 1842 else {
adamc@1260 1843 var args = [];
adam@1798 1844 stack = cons({c: "f", f: e.f, args: args, pos: 0, a: e.a.next}, stack);
adamc@1260 1845 if (!e.a.data.c) alert("[2] fr.f = " + e.f + "; 0 = " + e.a.data);
adamc@1260 1846 e = e.a.data;
adamc@1260 1847 }
adamc@1260 1848 break;
adamc@1260 1849 case "l":
adamc@1260 1850 e = {c: "c", v: {env: env, body: e.b}};
adamc@1260 1851 break;
adamc@1260 1852 case "a":
adamc@1260 1853 stack = cons({c: "a1", x: e.x}, stack);
adamc@1260 1854 e = e.f;
adamc@1260 1855 break;
adamc@1260 1856 case "r":
adamc@1260 1857 if (e.l == null)
adamc@1260 1858 whine("Empty Ur record in interpretation");
adamc@1260 1859 var fs = {};
adamc@1260 1860 stack = cons({c: "r", n: e.l.data.n, fs: fs, l: e.l.next}, stack);
adamc@1260 1861 e = e.l.data.v;
adamc@1260 1862 break;
adamc@1260 1863 case ".":
adamc@1260 1864 stack = cons({c: ".", f: e.f}, stack);
adamc@1260 1865 e = e.r;
adamc@1260 1866 break;
adamc@1260 1867 case ";":
adamc@1260 1868 stack = cons({c: ";", e2: e.e2}, stack);
adamc@1260 1869 e = e.e1;
adamc@1260 1870 break;
adamc@1260 1871 case "=":
adamc@1260 1872 stack = cons({c: "=", e2: e.e2}, stack);
adamc@1260 1873 e = e.e1;
adamc@1260 1874 break;
adamc@1260 1875 case "m":
adamc@1260 1876 stack = cons({c: "m", p: e.p}, stack);
adamc@1260 1877 e = e.e;
adamc@1260 1878 break;
adamc@1260 1879 case "e":
adamc@1260 1880 e = {c: "c", v: cs({c: "wc", env: env, body: e.e})};
adamc@1260 1881 break;
adamc@1260 1882 case "wc":
adamc@1260 1883 env = e.env;
adamc@1260 1884 e = e.body;
adamc@1260 1885 break;
adamc@1260 1886 case "K":
adamc@1260 1887 { var savedStack = stack.next, savedEnv = env;
adamc@1260 1888 e = {c: "c", v: function(v) { return exec1(savedEnv, savedStack, {c: "c", v: v}); } };}
adamc@1260 1889 usedK = true;
rmbruijn@1597 1890 break;
adamc@1260 1891 default:
adamc@1260 1892 whine("Unknown Ur expression kind " + e.c);
adamc@970 1893 }
adamc@970 1894 }
adamc@970 1895 }
adamc@970 1896
adamc@976 1897 function execD(e) {
adamc@1260 1898 return exec0(null, e);
adamc@976 1899 }
adamc@976 1900
adamc@970 1901 function exec(e) {
adamc@1260 1902 var r = exec0(null, e);
adamc@970 1903
adamc@1260 1904 if (r != null && r.body != null)
adamc@1260 1905 return function(v) { return exec0(cons(v, r.env), r.body); };
adamc@1260 1906 else
adamc@1260 1907 return r;
adamc@895 1908 }
adamc@895 1909
adamc@977 1910 function execF(f, x) {
adamc@1260 1911 return exec0(cons(x, f.env), f.body);
adamc@977 1912 }
adamc@977 1913
adamc@895 1914
adam@1290 1915 // Wrappers
adam@1290 1916
adam@1290 1917 function confrm(s) {
adam@1290 1918 return confirm(s) ? true : false;
adam@1290 1919 }
adam@1290 1920
adam@1290 1921
adamc@1323 1922 // URL blessing
adamc@1323 1923
adamc@1323 1924 var urlRules = null;
adamc@1323 1925
adamc@1323 1926 function checkUrl(s) {
adamc@1323 1927 for (var r = urlRules; r; r = r.next) {
adamc@1323 1928 var ru = r.data;
adamc@1323 1929 if (ru.prefix ? s.indexOf(ru.pattern) == 0 : s == ru.pattern)
adamc@1323 1930 return ru.allow ? s : null;
adamc@1323 1931 }
adamc@1323 1932
adamc@1323 1933 return null;
adamc@1323 1934 }
adamc@1323 1935
adamc@1323 1936 function bless(s) {
adamc@1323 1937 u = checkUrl(s);
adamc@1323 1938 if (u == null)
adamc@1323 1939 er("Disallowed URL: " + s);
adamc@1323 1940 return u;
adamc@1323 1941 }
adamc@1323 1942
adam@1556 1943
adam@1755 1944 // CSS validation
adam@1755 1945
adam@1755 1946 function atom(s) {
adam@1755 1947 for (var i = 0; i < s.length; ++i) {
adam@1755 1948 var c = s[i];
adam@1755 1949 if (!isAlnum(c) && c != '+' && c != '-' && c != '.' && c != '%' && c != '#')
adam@1755 1950 er("Disallowed character in CSS atom");
adam@1755 1951 }
adam@1755 1952
adam@1755 1953 return s;
adam@1755 1954 }
adam@1755 1955
adam@1755 1956 function css_url(s) {
adam@1755 1957 for (var i = 0; i < s.length; ++i) {
adam@1755 1958 var c = s[i];
adam@1755 1959 if (!isAlnum(c) && c != ':' && c != '/' && c != '.' && c != '_' && c != '+'
adam@1755 1960 && c != '-' && c != '%' && c != '?' && c != '&' && c != '=' && c != '#')
adam@1755 1961 er("Disallowed character in CSS URL");
adam@1755 1962 }
adam@1755 1963
adam@1755 1964 return s;
adam@1755 1965 }
adam@1755 1966
adam@1755 1967 function property(s) {
adam@1755 1968 if (s.length <= 0)
adam@1755 1969 er("Empty CSS property");
adam@1755 1970
adam@1755 1971 if (!isLower(s[0]) && s[0] != '_')
adam@1755 1972 er("Bad initial character in CSS property");
adam@1755 1973
adam@1755 1974 for (var i = 0; i < s.length; ++i) {
adam@1755 1975 var c = s[i];
adam@1755 1976 if (!isLower(c) && !isDigit(c) && c != '_' && c != '-')
adam@1755 1977 er("Disallowed character in CSS property");
adam@1755 1978 }
adam@1755 1979
adam@1755 1980 return s;
adam@1755 1981 }
adam@1755 1982
adam@1755 1983
adam@1556 1984 // ID generation
adam@1556 1985
adam@1556 1986 var nextId = 0;
adam@1556 1987
adam@1556 1988 function fresh() {
adam@1703 1989 return "uw" + (--nextId);
adam@1556 1990 }
adam@1556 1991
adam@1785 1992 function giveFocus(id) {
adam@1803 1993 var node = document.getElementById(id);
adam@1785 1994
adam@1803 1995 if (node)
adam@1803 1996 node.focus();
adam@1803 1997 else
adam@1803 1998 er("Tried to give focus to ID not used in document: " + id);
adam@1785 1999 }
adam@1785 2000
rmbruijn@1597 2001
adamc@693 2002 // App-specific code