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Basis.fromMilliseconds
author Adam Chlipala <adam@chlipala.net>
date Sun, 01 Nov 2015 11:55:01 -0500
parents e8863d9f8c59
children 61866c765485
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@2187 152 function fromMilliseconds(tm) {
adam@2187 153 return tm * 1000;
adam@2187 154 }
adam@2187 155
adam@1518 156 function addSeconds(tm, n) {
adam@1518 157 return tm + n * 1000000;
adam@1518 158 }
adam@1518 159
adam@1599 160 function stringToTime_error(string) {
adam@1599 161 var t = Date.parse(string);
adam@1599 162 if (isNaN(t))
adam@1632 163 er("Invalid date string: " + string);
adam@1599 164 else
adam@1599 165 return t * 1000;
adam@1599 166 }
adam@1599 167
adam@1599 168 function stringToTime(string) {
adam@1599 169 try {
adam@1599 170 var t = Date.parse(string);
adam@1599 171 if (isNaN(t))
adam@1599 172 return null;
adam@1599 173 else
adam@1599 174 return t * 1000;
adam@1599 175 } catch (e) {
adam@1599 176 return null;
adam@1599 177 }
rmbruijn@1597 178 }
rmbruijn@1597 179
adam@1609 180 /*
adam@1615 181 strftime() implementation from:
adam@1615 182 YUI 3.4.1 (build 4118)
adam@1615 183 Copyright 2011 Yahoo! Inc. All rights reserved.
adam@1615 184 Licensed under the BSD License.
adam@1615 185 http://yuilibrary.com/license/
adam@1615 186 */
adam@1609 187
adam@1615 188 var xPad=function (x, pad, r)
adam@1615 189 {
adam@1615 190 if(typeof r === "undefined")
adam@1615 191 {
adam@1615 192 r=10;
adam@1615 193 }
adam@1615 194 pad = pad.toString();
adam@1615 195 for( ; parseInt(x, 10)<r && r>1; r/=10) {
adam@1615 196 x = pad + x;
adam@1615 197 }
adam@1615 198 return x.toString();
adam@1615 199 };
adam@1609 200
adam@1615 201 var YDateEn = {
adam@1615 202 a: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
adam@1615 203 A: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
adam@1615 204 b: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
adam@1615 205 B: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
adam@1615 206 c: "%a %d %b %Y %T %Z",
adam@1615 207 p: ["AM", "PM"],
adam@1615 208 P: ["am", "pm"],
adam@1615 209 r: "%I:%M:%S %p",
adam@1615 210 x: "%d/%m/%y",
adam@1615 211 X: "%T"
adam@1615 212 };
adam@1609 213
adam@1615 214 var Dt = {
adam@1615 215 formats: {
adam@1615 216 a: function (d, l) { return l.a[d.getDay()]; },
adam@1615 217 A: function (d, l) { return l.A[d.getDay()]; },
adam@1615 218 b: function (d, l) { return l.b[d.getMonth()]; },
adam@1615 219 B: function (d, l) { return l.B[d.getMonth()]; },
adam@1615 220 C: function (d) { return xPad(parseInt(d.getFullYear()/100, 10), 0); },
adam@1615 221 d: ["getDate", "0"],
adam@1615 222 e: ["getDate", " "],
adam@1615 223 g: function (d) { return xPad(parseInt(Dt.formats.G(d)%100, 10), 0); },
adam@1615 224 G: function (d) {
adam@1615 225 var y = d.getFullYear();
adam@1615 226 var V = parseInt(Dt.formats.V(d), 10);
adam@1615 227 var W = parseInt(Dt.formats.W(d), 10);
phurst@1986 228
adam@1615 229 if(W > V) {
adam@1615 230 y++;
adam@1615 231 } else if(W===0 && V>=52) {
adam@1615 232 y--;
adam@1615 233 }
phurst@1986 234
adam@1615 235 return y;
adam@1615 236 },
adam@1615 237 H: ["getHours", "0"],
adam@1615 238 I: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, 0); },
adam@1615 239 j: function (d) {
adam@1615 240 var gmd_1 = new Date("" + d.getFullYear() + "/1/1 GMT");
adam@1615 241 var gmdate = new Date("" + d.getFullYear() + "/" + (d.getMonth()+1) + "/" + d.getDate() + " GMT");
adam@1615 242 var ms = gmdate - gmd_1;
adam@1615 243 var doy = parseInt(ms/60000/60/24, 10)+1;
adam@1615 244 return xPad(doy, 0, 100);
adam@1615 245 },
adam@1615 246 k: ["getHours", " "],
adam@1615 247 l: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, " "); },
adam@1615 248 m: function (d) { return xPad(d.getMonth()+1, 0); },
adam@1615 249 M: ["getMinutes", "0"],
adam@1615 250 p: function (d, l) { return l.p[d.getHours() >= 12 ? 1 : 0 ]; },
adam@1615 251 P: function (d, l) { return l.P[d.getHours() >= 12 ? 1 : 0 ]; },
adam@1615 252 s: function (d, l) { return parseInt(d.getTime()/1000, 10); },
adam@1615 253 S: ["getSeconds", "0"],
adam@1615 254 u: function (d) { var dow = d.getDay(); return dow===0?7:dow; },
adam@1615 255 U: function (d) {
adam@1615 256 var doy = parseInt(Dt.formats.j(d), 10);
adam@1615 257 var rdow = 6-d.getDay();
adam@1615 258 var woy = parseInt((doy+rdow)/7, 10);
adam@1615 259 return xPad(woy, 0);
adam@1615 260 },
adam@1615 261 V: function (d) {
adam@1615 262 var woy = parseInt(Dt.formats.W(d), 10);
adam@1615 263 var dow1_1 = (new Date("" + d.getFullYear() + "/1/1")).getDay();
adam@1615 264 var idow = woy + (dow1_1 > 4 || dow1_1 <= 1 ? 0 : 1);
adam@1615 265 if(idow === 53 && (new Date("" + d.getFullYear() + "/12/31")).getDay() < 4)
adam@1615 266 {
adam@1615 267 idow = 1;
adam@1615 268 }
adam@1615 269 else if(idow === 0)
adam@1615 270 {
adam@1615 271 idow = Dt.formats.V(new Date("" + (d.getFullYear()-1) + "/12/31"));
adam@1615 272 }
phurst@1986 273
adam@1615 274 return xPad(idow, 0);
adam@1615 275 },
adam@1615 276 w: "getDay",
adam@1615 277 W: function (d) {
adam@1615 278 var doy = parseInt(Dt.formats.j(d), 10);
adam@1615 279 var rdow = 7-Dt.formats.u(d);
adam@1615 280 var woy = parseInt((doy+rdow)/7, 10);
adam@1615 281 return xPad(woy, 0, 10);
adam@1615 282 },
adam@1615 283 y: function (d) { return xPad(d.getFullYear()%100, 0); },
adam@1615 284 Y: "getFullYear",
adam@1615 285 z: function (d) {
adam@1615 286 var o = d.getTimezoneOffset();
adam@1615 287 var H = xPad(parseInt(Math.abs(o/60), 10), 0);
adam@1615 288 var M = xPad(Math.abs(o%60), 0);
adam@1615 289 return (o>0?"-":"+") + H + M;
adam@1615 290 },
adam@1615 291 Z: function (d) {
adam@1615 292 var tz = d.toString().replace(/^.*:\d\d( GMT[+-]\d+)? \(?([A-Za-z ]+)\)?\d*$/, "$2").replace(/[a-z ]/g, "");
adam@1615 293 if(tz.length > 4) {
adam@1615 294 tz = Dt.formats.z(d);
adam@1615 295 }
adam@1615 296 return tz;
adam@1615 297 },
adam@1615 298 "%": function (d) { return "%"; }
adam@1615 299 },
adam@1615 300
adam@1615 301 aggregates: {
adam@1615 302 c: "locale",
adam@1615 303 D: "%m/%d/%y",
adam@1615 304 F: "%Y-%m-%d",
adam@1615 305 h: "%b",
adam@1615 306 n: "\n",
adam@1615 307 r: "%I:%M:%S %p",
adam@1615 308 R: "%H:%M",
adam@1615 309 t: "\t",
adam@1615 310 T: "%H:%M:%S",
adam@1615 311 x: "locale",
adam@1615 312 X: "locale"
adam@1615 313 },
adam@1615 314
adam@1615 315 format : function (oDate, format) {
adam@1615 316 var replace_aggs = function (m0, m1) {
adam@1615 317 var f = Dt.aggregates[m1];
adam@1615 318 return (f === "locale" ? YDateEn[m1] : f);
adam@1615 319 };
adam@1615 320
adam@1615 321 var replace_formats = function (m0, m1) {
adam@1615 322 var f = Dt.formats[m1];
adam@1615 323 switch(typeof f) {
adam@1615 324 case "string":
adam@1615 325 return oDate[f]();
adam@1615 326 case "function":
adam@1615 327 return f.call(oDate, oDate, YDateEn);
adam@1615 328 case "array":
adam@1615 329 case "object":
adam@1615 330 if(typeof(f[0]) === "string")
adam@1615 331 return xPad(oDate[f[0]](), f[1]);
adam@1615 332 default:
adam@1615 333 return m1;
adam@1615 334 }
adam@1615 335 };
adam@1615 336
adam@1615 337 while(format.match(/%[cDFhnrRtTxX]/)) {
adam@1615 338 format = format.replace(/%([cDFhnrRtTxX])/g, replace_aggs);
adam@1609 339 }
adam@1615 340
adam@1615 341 var str = format.replace(/%([aAbBCdegGHIjklmMpPsSuUVwWyYzZ%])/g, replace_formats);
adam@1615 342
adam@1615 343 replace_aggs = replace_formats = undefined;
adam@1615 344
adam@1615 345 return str;
adam@1615 346 }
adam@1609 347 };
adam@1609 348
adam@1615 349 // End of YUI code
adam@1609 350
adam@1609 351 function strftime(fmt, thisTime)
adam@1609 352 {
adam@1609 353 var thisDate = new Date();
adam@1622 354 thisDate.setTime(Math.floor(thisTime / 1000));
adam@1615 355 return Dt.format(thisDate, fmt);
phurst@1986 356 };
phurst@1986 357
phurst@1986 358 function fromDatetime(year, month, date, hour, minute, second) {
phurst@1986 359 return (new Date(year, month, date, hour, minute, second)).getTime() * 1000;
phurst@1986 360 };
phurst@1986 361
phurst@1986 362 function datetimeYear(t) {
phurst@1986 363 return (new Date(t / 1000)).getYear() + 1900;
phurst@1986 364 };
phurst@1986 365
phurst@1986 366 function datetimeMonth(t) {
phurst@1986 367 return (new Date(t / 1000)).getMonth();
phurst@1986 368 };
phurst@1986 369
phurst@1986 370 function datetimeDay(t) {
phurst@1986 371 return (new Date(t / 1000)).getDate();
phurst@1986 372 };
phurst@1986 373
phurst@1986 374 function datetimeHour(t) {
phurst@1986 375 return (new Date(t / 1000)).getHours();
phurst@1986 376 };
phurst@1986 377
phurst@1986 378 function datetimeMinute(t) {
phurst@1986 379 return (new Date(t / 1000)).getMinutes();
phurst@1986 380 };
phurst@1986 381
phurst@1986 382 function datetimeSecond(t) {
phurst@1986 383 return (new Date(t / 1000)).getSeconds();
phurst@1986 384 };
phurst@1986 385
phurst@1986 386 function datetimeDayOfWeek(t) {
phurst@1986 387 return (new Date(t / 1000)).getDay();
phurst@1986 388 };
adam@1609 389
adam@1487 390
adamc@729 391 // Error handling
adamc@729 392
adam@1625 393 function uw_debug(msg) {
adam@1625 394 try {
adam@1625 395 console.debug(msg);
adam@1625 396 } catch (e) {
adam@1625 397 alert("DEBUG: " + msg);
adam@1625 398 }
adam@1625 399
adam@1625 400 return 0;
adam@1625 401 }
adam@1625 402
adamc@729 403 function whine(msg) {
adamc@1260 404 alert(msg);
adamc@1260 405 throw msg;
adamc@729 406 }
adamc@729 407
adamc@810 408 function pf(loc) {
adamc@1260 409 throw ("Pattern match failure (" + loc + ")");
adamc@729 410 }
adamc@729 411
adam@1553 412 var lameDuck = false;
adam@1553 413
adamc@798 414 function runHandlers(kind, ls, arg) {
adam@1553 415 if (!lameDuck) {
adam@1553 416 if (ls == null)
adam@1553 417 alert(kind + ": " + arg);
adam@1553 418 for (; ls; ls = ls.next)
adam@1553 419 try {
adam@1890 420 exec({c:"a", f:{c:"a", f:ls.data, x:{c:"c", v:arg}}, x:{c:"c", v:null}});
adam@1553 421 } catch (v) { }
adam@1553 422 }
adamc@729 423 }
adamc@729 424
adamc@729 425 var errorHandlers = null;
adamc@729 426
adam@1890 427 function flift0(v) {
adam@1890 428 return {c:"c", v:v};
adam@1890 429 }
adam@1890 430
adamc@729 431 function onError(f) {
adam@1890 432 errorHandlers = cons(flift0(f), errorHandlers);
adamc@729 433 }
adamc@729 434
adamc@729 435 function er(s) {
adamc@1260 436 runHandlers("Error", errorHandlers, s);
adamc@1260 437 throw {uw_error: s};
adamc@729 438 }
adamc@729 439
adamc@729 440 var failHandlers = null;
adamc@729 441
adamc@729 442 function onFail(f) {
adam@1890 443 failHandlers = cons(flift0(f), failHandlers);
adamc@729 444 }
adamc@729 445
adamc@729 446 function doExn(v) {
adamc@1260 447 if (v == null || v.uw_error == null) {
adamc@1260 448 var s = (v == null ? "null" : v.message ? v.message : v.toString());
adamc@1260 449 if (v != null && v.fileName && v.lineNumber)
adamc@1260 450 s += " (" + v.fileName + ":" + v.lineNumber + ")";
adamc@1260 451 runHandlers("Fail", failHandlers, s);
adamc@1260 452 }
adamc@729 453 }
adamc@729 454
adamc@729 455 var disconnectHandlers = null;
adamc@729 456
adamc@976 457 function flift(f) {
kkallio@1484 458 return {c: "c", v:{env:cons(f,null), body:{c:"v", n:1}}};
adamc@976 459 }
adamc@976 460
adamc@729 461 function onDisconnect(f) {
adamc@1260 462 disconnectHandlers = cons(flift(f), disconnectHandlers);
adamc@729 463 }
adamc@729 464
adamc@729 465 function discon() {
adamc@1260 466 runHandlers("Disconnect", disconnectHandlers, null);
adamc@729 467 }
adamc@729 468
adamc@729 469 var connectHandlers = null;
adamc@729 470
adamc@729 471 function onConnectFail(f) {
adamc@1260 472 connectHandlers = cons(flift(f), connectHandlers);
adamc@729 473 }
adamc@729 474
adamc@729 475 function conn() {
adamc@1260 476 runHandlers("Connect", connectHandlers, null);
adamc@729 477 }
adamc@729 478
adamc@729 479 var serverHandlers = null;
adamc@729 480
adamc@729 481 function onServerError(f) {
adam@1890 482 serverHandlers = cons(flift0(f), serverHandlers);
adamc@729 483 }
adamc@729 484
adamc@729 485 function servErr(s) {
adamc@1260 486 window.setTimeout(function () { runHandlers("Server", serverHandlers, s); }, 0);
adamc@729 487 }
adamc@729 488
adam@1783 489 // Key and mouse events
adam@1555 490
adam@1555 491 var uw_event = null;
adam@1555 492
adam@1783 493 function uw_getEvent() {
adam@1783 494 return window.event ? window.event : uw_event;
adam@1555 495 }
adam@1555 496
adam@1783 497 function firstGood(x, y) {
adam@1783 498 if (x == undefined || x == 0)
adam@1783 499 return y;
adam@1783 500 else
adam@1783 501 return x;
adam@1783 502 }
adam@1783 503
adam@1783 504 function uw_mouseEvent() {
adam@1783 505 var ev = uw_getEvent();
adam@1783 506
adam@1783 507 return {_ScreenX : firstGood(ev.screenX, 0),
adam@1783 508 _ScreenY : firstGood(ev.screenY, 0),
adam@1783 509 _ClientX : firstGood(ev.clientX, 0),
adam@1783 510 _ClientY : firstGood(ev.clientY, 0),
adam@1783 511 _CtrlKey : firstGood(ev.ctrlKey, false),
adam@1783 512 _ShiftKey : firstGood(ev.shiftKey, false),
adam@1783 513 _AltKey : firstGood(ev.altKey, false),
adam@1783 514 _MetaKey : firstGood(ev.metaKey, false),
adam@1783 515 _Button : ev.button == 2 ? "Right" : ev.button == 1 ? "Middle" : "Left"};
adam@1783 516 }
adam@1783 517
adam@1783 518 function uw_keyEvent() {
adam@1783 519 var ev = uw_getEvent();
adam@1783 520
adam@1783 521 return {_KeyCode : firstGood(ev.keyCode, ev.which),
adam@1783 522 _CtrlKey : firstGood(ev.ctrlKey, false),
adam@1783 523 _ShiftKey : firstGood(ev.shiftKey, false),
adam@1783 524 _AltKey : firstGood(ev.altKey, false),
adam@1783 525 _MetaKey : firstGood(ev.metaKey, false)};
adam@1783 526 }
adam@1783 527
adam@1783 528
adam@1783 529
adam@1555 530 // Document events
adam@1555 531
adam@1555 532 function uw_handler(name, f) {
adam@1555 533 var old = document[name];
adam@1555 534 if (old == undefined)
adam@1783 535 document[name] = function(event) { uw_event = event; execF(execF(f, uw_mouseEvent())); };
adam@1555 536 else
adam@1783 537 document[name] = function(event) { uw_event = event; old(); execF(execF(f, uw_mouseEvent())); };
adam@1555 538 }
adam@1555 539
adam@1555 540 function uw_onClick(f) {
adam@1555 541 uw_handler("onclick", f);
adam@1555 542 }
adam@1555 543
ziv@2130 544 function uw_onContextmenu(f) {
ziv@2130 545 uw_handler("oncontextmenu", f);
ziv@2130 546 }
ziv@2130 547
adam@1555 548 function uw_onDblclick(f) {
adam@1555 549 uw_handler("ondblclick", f);
adam@1555 550 }
adam@1555 551
adam@1555 552 function uw_onMousedown(f) {
adam@1555 553 uw_handler("onmousedown", f);
adam@1555 554 }
adam@1555 555
ziv@2130 556 function uw_onMouseenter(f) {
ziv@2130 557 uw_handler("onmouseenter", f);
ziv@2130 558 }
ziv@2130 559
ziv@2130 560 function uw_onMouseleave(f) {
ziv@2130 561 uw_handler("onmouseleave", f);
ziv@2130 562 }
ziv@2130 563
adam@1791 564 function uw_onMousemove(f) {
adam@1791 565 uw_handler("onmousemove", f);
adam@1791 566 }
adam@1791 567
adam@1791 568 function uw_onMouseout(f) {
adam@1791 569 uw_handler("onmouseout", f);
adam@1791 570 }
adam@1791 571
adam@1791 572 function uw_onMouseover(f) {
adam@1791 573 uw_handler("onmouseover", f);
adam@1791 574 }
adam@1791 575
adam@1555 576 function uw_onMouseup(f) {
adam@1555 577 uw_handler("onmouseup", f);
adam@1555 578 }
adam@1555 579
adam@1555 580 function uw_keyHandler(name, f) {
adam@1555 581 var old = document[name];
adam@1555 582 if (old == undefined)
adam@1783 583 document[name] = function(event) { uw_event = event; execF(execF(f, uw_keyEvent())); };
adam@1555 584 else
adam@1783 585 document[name] = function(event) { uw_event = event; old(); execF(execF(f, uw_keyEvent())); };
adam@1555 586 }
adam@1555 587
adam@1555 588 function uw_onKeydown(f) {
adam@1555 589 uw_keyHandler("onkeydown", f);
adam@1555 590 }
adam@1555 591
adam@1555 592 function uw_onKeypress(f) {
adam@1555 593 uw_keyHandler("onkeypress", f);
adam@1555 594 }
adam@1555 595
adam@1555 596 function uw_onKeyup(f) {
adam@1555 597 uw_keyHandler("onkeyup", f);
adam@1555 598 }
adam@1555 599
adam@1559 600 // Cancelling of further event processing
adam@1559 601
adam@1559 602 function uw_preventDefault() {
adam@1559 603 var e = window.event ? window.event : uw_event;
adam@1559 604 e.returnValue = false;
adam@1559 605 if (e.preventDefault) e.preventDefault();
adam@1559 606 }
adam@1559 607
adam@1559 608 function uw_stopPropagation() {
adam@1559 609 var e = window.event ? window.event : uw_event;
adam@1559 610 e.cancelBubble = true;
adam@1559 611 if (e.stopPropagation) e.stopPropagation();
adam@1559 612 }
adamc@729 613
adamc@692 614 // Embedding closures in XML strings
adamc@692 615
adamc@693 616 function cs(f) {
adamc@1260 617 return {closure: f};
adamc@693 618 }
adamc@693 619
adamc@693 620 function isWeird(v) {
adamc@1260 621 return v.closure != null || v.cat1 != null;
adamc@693 622 }
adamc@693 623
adamc@692 624 function cat(s1, s2) {
adamc@1260 625 if (isWeird(s1) || isWeird(s2))
adamc@1260 626 return {cat1: s1, cat2: s2};
adamc@1260 627 else
adamc@1260 628 return s1 + s2;
adamc@692 629 }
adamc@692 630
adamc@692 631 var closures = [];
adamc@703 632 var freeClosures = null;
adamc@692 633
adamc@692 634 function newClosure(f) {
adamc@1260 635 var n;
adamc@1260 636 if (freeClosures == null) {
adamc@1260 637 n = closures.length;
adamc@1260 638 } else {
adamc@1260 639 n = freeClosures.data;
adamc@1260 640 freeClosures = freeClosures.next;
adamc@1260 641 }
adamc@1260 642 closures[n] = f;
adamc@1260 643 return n;
adamc@692 644 }
adamc@692 645
adamc@703 646 function freeClosure(n) {
adamc@1260 647 closures[n] = null;
adamc@1260 648 freeClosures = cons(n, freeClosures);
adamc@703 649 }
adamc@703 650
adamc@692 651 function cr(n) {
adamc@1260 652 return closures[n];
adamc@692 653 }
adamc@692 654
adam@2129 655 function flattenAcc(a, cls, trs) {
adam@2129 656 while (trs) {
adam@2129 657 var tr = trs.data;
adam@2129 658 trs = trs.next;
adam@2129 659
adam@2129 660 if (tr.cat1 != null) {
adam@2129 661 trs = cons(tr.cat1, cons(tr.cat2, trs));
adam@2129 662 } else if (tr.closure != null) {
adam@2129 663 var cl = newClosure(tr.closure);
adam@2129 664 cls.v = cons(cl, cls.v);
adam@2129 665 a.push("cr(", cl.toString(), ")");
adam@2129 666 } else
adam@2129 667 a.push(tr);
adam@2129 668 }
vshabanoff@1813 669 }
vshabanoff@1813 670
vshabanoff@1813 671 function flatten(cls, tr) {
vshabanoff@1813 672 var a = [];
adam@2129 673 flattenAcc(a, cls, cons(tr, null));
vshabanoff@1813 674 return a.join("");
adamc@692 675 }
adamc@692 676
adamc@728 677 function flattenLocal(s) {
adamc@1260 678 var cls = {v : null};
adamc@1260 679 var r = flatten(cls, s);
adamc@1260 680 for (cl = cls.v; cl != null; cl = cl.next)
adamc@1260 681 freeClosure(cl.data);
adamc@1260 682 return r;
adamc@728 683 }
adamc@728 684
adamc@692 685
adamc@692 686 // Dynamic tree management
adamc@692 687
adamc@690 688 function populate(node) {
adamc@1260 689 var s = node.signal;
adamc@1260 690 var oldSources = node.sources;
adamc@1260 691 try {
adamc@1260 692 var sr = execF(s, null);
adamc@1260 693 var newSources = sr._sources;
adamc@690 694
adamc@1260 695 for (var sp = oldSources; sp; sp = sp.next)
adamc@1260 696 if (!member(sp.data, newSources))
adamc@1260 697 sp.data.dyns = remove(node, sp.data.dyns);
adamc@690 698
adamc@1260 699 for (var sp = newSources; sp; sp = sp.next)
adamc@1260 700 if (!member(sp.data, oldSources))
adamc@1260 701 sp.data.dyns = cons(node, sp.data.dyns);
adamc@690 702
adamc@1260 703 node.sources = newSources;
adamc@1260 704 node.recreate(sr._data);
adamc@1260 705 } catch (v) {
adamc@1260 706 doExn(v);
adamc@1260 707 }
adamc@579 708 }
adamc@574 709
adamc@580 710 function sc(v) {
adamc@1260 711 return {data : v, dyns : null};
adamc@580 712 }
adamc@580 713 function sv(s, v) {
adam@1491 714 if (s.data != v) {
adam@1491 715 s.data = v;
adamc@967 716
adam@1491 717 for (var ls = s.dyns; ls; ls = ls.next)
adam@1491 718 if (!ls.dead)
adam@1491 719 populate(ls.data);
adam@1491 720 }
adamc@580 721 }
adamc@601 722 function sg(s) {
adamc@1260 723 return s.data;
adamc@601 724 }
adamc@579 725
adamc@580 726 function ss(s) {
adamc@1260 727 return {env:cons(s, null), body:{c:"r", l:
adamc@1260 728 cons({n:"sources", v:{c:"c", v:cons(s, null)}},
adamc@1260 729 cons({n:"data", v:{c:"f", f:sg, a:cons({c:"v", n:1}, null)}}, null))}};
adamc@580 730 }
adamc@580 731 function sr(v) {
adamc@1260 732 return {env:null, body:{c:"c", v:{_sources : null, _data : v}}};
adamc@580 733 }
adamc@580 734 function sb(x,y) {
adamc@1260 735 return {env:cons(y,cons(x,null)),
adamc@1260 736 body:{c:"=",
adamc@1260 737 e1:{c:"a", f:{c:"v", n:2}, x:{c:"c", v:null}},
adamc@1260 738 e2:{c:"=",
adamc@1260 739 e1:{c:"a",
adamc@1260 740 f:{c:"a", f:{c:"v", n:2}, x:{c:".", r:{c:"v", n:0}, f:"data"}},
adamc@1260 741 x:{c:"c", v:null}},
adamc@1260 742 e2:{c:"r", l:cons(
adamc@1260 743 {n:"sources", v:{c:"f", f:union, a:cons({c:".", r:{c:"v", n:1}, f:"sources"},
adamc@1260 744 cons({c:".", r:{c:"v", n:0}, f:"sources"}, null))}},
adamc@1260 745 cons({n:"data", v:{c:".", r:{c:"v", n:0}, f:"data"}}, null))}}}};
adamc@580 746 }
adamc@841 747 function scur(s) {
adamc@1260 748 return execF(s, null)._data;
adamc@841 749 }
adamc@571 750
adamc@604 751 function lastParent() {
adamc@1260 752 var pos = document.body;
adamc@604 753
adamc@1260 754 while (pos.lastChild && pos.lastChild.nodeType == 1)
adamc@1260 755 pos = pos.lastChild;
adamc@600 756
adamc@1260 757 pos = pos.parentNode;
adamc@1039 758
adamc@1260 759 return pos;
adamc@600 760 }
adamc@600 761
adam@1803 762 var thisScript = null;
adam@1803 763
adamc@604 764 function addNode(node) {
adam@1678 765 if (thisScript) {
adam@1678 766 if (thisScript.parentNode)
adam@1678 767 thisScript.parentNode.replaceChild(node, thisScript);
adam@1678 768 } else
adamc@1260 769 lastParent().appendChild(node);
adamc@603 770 }
adamc@603 771
adam@1803 772 function runScripts(node) {
adam@1803 773 if (node.tagName == "SCRIPT") {
adam@1803 774 var savedScript = thisScript;
adam@1803 775 thisScript = node;
phurst@1986 776
adam@1803 777 try {
adam@1803 778 eval(thisScript.text);
adam@1803 779 } catch (v) {
adam@1803 780 doExn(v);
adam@1803 781 }
adam@1803 782 if (thisScript.parentNode)
adam@1803 783 thisScript.parentNode.removeChild(thisScript);
adamc@690 784
adam@1803 785 thisScript = savedScript;
adam@1803 786 } else if (node.getElementsByTagName) {
adamc@1260 787 var savedScript = thisScript;
adamc@603 788
adamc@1260 789 var scripts = node.getElementsByTagName("script"), scriptsCopy = [];
adamc@1260 790 var len = scripts.length;
adamc@1260 791 for (var i = 0; i < len; ++i)
adamc@1260 792 scriptsCopy[i] = scripts[i];
adamc@1260 793 for (var i = 0; i < len; ++i) {
adamc@1260 794 thisScript = scriptsCopy[i];
adamc@1039 795
adamc@1260 796 try {
adamc@1260 797 eval(thisScript.text);
adamc@1260 798 } catch (v) {
adamc@1260 799 doExn(v);
adamc@1260 800 }
adamc@1260 801 if (thisScript.parentNode)
adamc@1260 802 thisScript.parentNode.removeChild(thisScript);
adamc@1260 803 }
adamc@1260 804
adamc@1260 805 thisScript = savedScript;
adamc@729 806 }
adamc@603 807 }
adamc@603 808
adamc@603 809
adamc@692 810 // Dynamic tree entry points
adamc@692 811
adamc@967 812 function killScript(scr) {
adamc@1260 813 scr.dead = true;
adamc@1260 814 for (var ls = scr.sources; ls; ls = ls.next)
adamc@1260 815 ls.data.dyns = remove(scr, ls.data.dyns);
adamc@1260 816 for (var ls = scr.closures; ls; ls = ls.next)
adamc@1260 817 freeClosure(ls.data);
adamc@967 818 }
adamc@967 819
adam@1538 820 // Sometimes we wind up with tables that contain <script>s outside the single <tbody>.
adam@1538 821 // To avoid dealing with that case, we normalize by moving <script>s into <tbody>.
adam@1538 822 function normalizeTable(table) {
adam@1538 823 var orig = table;
adam@1538 824
adam@1538 825 var script, next;
adam@1538 826
adam@1803 827 while (table && table.tagName != "TABLE")
adam@1538 828 table = table.parentNode;
adam@1538 829
adam@1538 830 for (var tbody = table.firstChild; tbody; tbody = tbody.nextSibling) {
adam@1538 831 if (tbody.tagName == "TBODY") {
adam@1681 832 var firstChild = tbody.firstChild;
adam@1681 833
adam@1538 834 for (script = table.firstChild; script && script != tbody; script = next) {
adam@1538 835 next = script.nextSibling;
adam@1538 836
adam@1681 837 if (firstChild)
adam@1681 838 tbody.insertBefore(script, firstChild);
adam@1681 839 else
adam@1681 840 tbody.appendChild(script);
adam@1538 841 }
adam@1538 842
adam@1538 843 return;
adam@1538 844 }
adam@1538 845 }
adam@1538 846
adam@1538 847 var tbody = document.createElement("tbody");
adam@1538 848 for (script = table.firstChild; script; script = next) {
adam@1538 849 next = script.nextSibling;
rmbruijn@1597 850
adam@1681 851 tbody.appendChild(script);
adam@1538 852 }
adam@1538 853 table.appendChild(tbody);
adam@1538 854 }
adam@1538 855
adam@1803 856 var suspendScripts = false;
adam@1803 857
adamc@901 858 function dyn(pnode, s) {
adam@1803 859 if (suspendScripts)
adam@1803 860 return;
adam@1803 861
adamc@1260 862 var x = document.createElement("script");
adamc@1260 863 x.dead = false;
adamc@1260 864 x.signal = s;
adamc@1260 865 x.sources = null;
adamc@1260 866 x.closures = null;
adamc@899 867
adamc@1260 868 var firstChild = null;
adamc@899 869
adamc@1260 870 x.recreate = function(v) {
adamc@1260 871 for (var ls = x.closures; ls; ls = ls.next)
adamc@1260 872 freeClosure(ls.data);
adamc@945 873
adamc@946 874 var next;
adamc@1260 875 for (var child = firstChild; child && child != x; child = next) {
adamc@1260 876 next = child.nextSibling;
adamc@1260 877
adamc@1260 878 killScript(child);
adamc@1260 879 if (child.getElementsByTagName) {
adamc@1260 880 var arr = child.getElementsByTagName("script");
adamc@1260 881 for (var i = 0; i < arr.length; ++i)
adamc@1260 882 killScript(arr[i]);
adamc@1260 883 }
adamc@1260 884
adamc@1260 885 if (child.parentNode)
adamc@1260 886 child.parentNode.removeChild(child);
adamc@946 887 }
adamc@903 888
adamc@1260 889 var cls = {v : null};
adamc@1260 890 var html = flatten(cls, v);
adamc@1260 891 if (pnode != "table" && pnode != "tr")
adamc@1260 892 html = dynPrefix + html;
adamc@1260 893 x.closures = cls.v;
adamc@946 894
adamc@1260 895 if (pnode == "table") {
adam@1538 896 normalizeTable(x.parentNode);
adam@1538 897
adamc@1260 898 var dummy = document.createElement("body");
adam@1803 899 suspendScripts = true;
adam@1803 900 try {
adam@1803 901 dummy.innerHTML = "<table>" + html + "</table>";
adam@1803 902 } catch (e) {
adam@1803 903 suspendScripts = false;
adam@1803 904 throw e;
adam@1803 905 }
adam@1803 906
adamc@1260 907 var table = x.parentNode;
adamc@1260 908
adamc@1260 909 if (table) {
adamc@1260 910 firstChild = null;
adamc@1260 911 var tbody;
adamc@1260 912
adamc@1260 913 var arr = dummy.getElementsByTagName("tbody");
adamc@1260 914
adamc@1260 915 var tbody;
adamc@1260 916 if (arr.length > 0 && arr[0].parentNode == dummy.firstChild) {
adamc@1260 917 tbody = arr[0];
adamc@1260 918 var next;
adamc@1260 919 for (var node = dummy.firstChild.firstChild; node; node = next) {
adamc@1260 920 next = node.nextSibling;
adamc@1260 921
adamc@1260 922 if (node.tagName != "TBODY")
adamc@1260 923 tbody.appendChild(node);
adamc@1260 924 }
adamc@1260 925 } else
adamc@1260 926 tbody = dummy.firstChild;
adamc@1260 927
adamc@1260 928 var next;
adamc@1260 929 firstChild = document.createElement("script");
adamc@1260 930 table.insertBefore(firstChild, x);
adamc@1260 931 for (var node = tbody.firstChild; node; node = next) {
adamc@1260 932 next = node.nextSibling;
adamc@1260 933 table.insertBefore(node, x);
adam@1803 934 suspendScripts = false;
adam@1803 935 runScripts(node);
adam@1803 936 suspendScripts = true;
adamc@1260 937 }
adamc@1260 938 }
adam@1803 939
adam@1803 940 suspendScripts = false;
adamc@1260 941 } else if (pnode == "tr") {
adamc@1260 942 var dummy = document.createElement("body");
adam@1803 943 suspendScripts = true;
adam@1803 944 try {
adam@1803 945 dummy.innerHTML = "<table><tr>" + html + "</tr></table>";
adam@1803 946 } catch (e) {
adam@1803 947 suspendScripts = false;
adam@1803 948 throw e;
adam@1803 949 }
adam@1803 950
adamc@1260 951 var table = x.parentNode;
adamc@1260 952
adamc@1260 953 if (table) {
adamc@1260 954 var arr = dummy.getElementsByTagName("tr");
adamc@1260 955 firstChild = null;
adamc@1260 956 var tr;
adamc@1260 957 if (arr.length > 0 && table != null)
adamc@1260 958 tr = arr[0];
adamc@1260 959 else
adamc@1260 960 tr = dummy.firstChild;
adamc@1260 961
adamc@1260 962 var next;
adamc@1260 963 firstChild = document.createElement("script");
adamc@1260 964 table.insertBefore(firstChild, x);
adamc@1260 965 for (var node = tr.firstChild; node; node = next) {
adamc@1260 966 next = node.nextSibling;
adamc@1260 967 table.insertBefore(node, x);
adam@1803 968 suspendScripts = false;
adam@1803 969 runScripts(node);
adam@1803 970 suspendScripts = true;
adamc@1260 971 }
adam@1803 972 };
adam@1803 973
adam@1803 974 suspendScripts = false;
adamc@1260 975 } else {
adamc@1260 976 firstChild = document.createElement("span");
adam@1803 977
adam@1803 978 suspendScripts = true;
adam@1803 979 try {
adam@1803 980 firstChild.innerHTML = html;
adam@1803 981 if (x.parentNode)
adam@1803 982 x.parentNode.insertBefore(firstChild, x);
adam@1803 983 } catch (e) {
adam@1803 984 suspendScripts = false;
adam@1803 985 throw e;
adam@1803 986 }
adam@1803 987 suspendScripts = false;
adam@1802 988 runScripts(firstChild);
adamc@903 989 }
adamc@1260 990 };
adamc@899 991
adamc@1260 992 addNode(x);
adamc@1260 993 populate(x);
adamc@571 994 }
adamc@582 995
adam@1702 996 function setInnerHTML(node, html) {
adam@1702 997 var x;
adam@1702 998
adam@1702 999 if (node.previousSibling && node.previousSibling.closures != undefined) {
adam@1702 1000 x = node.previousSibling;
adam@1702 1001
adam@1702 1002 for (var ls = x.closures; ls; ls = ls.next)
adam@1702 1003 freeClosure(ls.data);
adam@1702 1004
adam@1702 1005 if (node.getElementsByTagName) {
adam@1702 1006 var arr = node.getElementsByTagName("script");
adam@1702 1007 for (var i = 0; i < arr.length; ++i)
adam@1702 1008 killScript(arr[i]);
adam@1702 1009 }
adam@1702 1010 } else {
adam@1702 1011 x = document.createElement("script");
adam@1702 1012 x.dead = false;
adam@1702 1013 x.sources = null;
adam@1702 1014
adam@1702 1015 if (node.parentNode)
adam@1702 1016 node.parentNode.insertBefore(x, node);
adam@1702 1017 else
adam@1702 1018 whine("setInnerHTML: node is not already in the DOM tree");
adam@1702 1019 }
adam@1702 1020
adam@1702 1021 var cls = {v : null};
adam@1702 1022 var html = flatten(cls, html);
adam@1702 1023 x.closures = cls.v;
adam@1803 1024 suspendScripts = true;
adam@1702 1025 node.innerHTML = html;
adam@1803 1026 suspendScripts = false;
adam@1702 1027 runScripts(node);
adam@1702 1028 }
adam@1702 1029
adam@1792 1030 var maySuspend = true;
adam@1792 1031
adam@1786 1032 function active(s) {
adam@1803 1033 if (suspendScripts)
adam@1803 1034 return;
adam@1803 1035
adam@1792 1036 var ms = maySuspend;
adam@1792 1037 maySuspend = false;
adam@1792 1038 try {
adam@1792 1039 var html = execF(s);
adam@1792 1040 } catch (e) {
adam@1792 1041 maySuspend = ms;
adam@1792 1042 throw e;
adam@1792 1043 }
adam@1792 1044 maySuspend = ms;
adam@2002 1045 if (html != "") {
adam@2002 1046 var span = document.createElement("span");
adam@2002 1047 addNode(span);
adam@2002 1048 setInnerHTML(span, html);
adam@2002 1049 }
adam@1786 1050 }
adam@1786 1051
adam@1463 1052 function input(x, s, recreate, type, name) {
adam@1463 1053 if (name) x.name = name;
adamc@1260 1054 if (type) x.type = type;
adamc@1260 1055 x.dead = false;
adamc@1260 1056 x.signal = ss(s);
adamc@1260 1057 x.sources = null;
adamc@1260 1058 x.recreate = recreate(x);
adamc@1260 1059 addNode(x);
adamc@1260 1060 populate(x);
adamc@816 1061
adamc@1260 1062 return x;
adamc@816 1063 }
adamc@816 1064
adam@2079 1065 function inpt(type, s, name) {
adam@1803 1066 if (suspendScripts)
adam@1803 1067 return;
adam@1803 1068
adamc@1260 1069 var x = input(document.createElement("input"), s,
adam@2079 1070 function(x) { return function(v) { if (x.value != v) x.value = v; }; }, type, name);
adamc@1260 1071 x.value = s.data;
adam@1491 1072 x.onkeyup = x.oninput = x.onchange = x.onpropertychange = function() { sv(s, x.value) };
adamc@816 1073
adamc@1260 1074 return x;
adamc@816 1075 }
adamc@816 1076
adam@2079 1077 function inp(s, name) {
adam@2079 1078 return inpt("text", s, name);
adam@2079 1079 }
adam@2079 1080
ziv@2055 1081 function password(s, name) {
adam@2079 1082 return inpt("password", s, name);
adam@2079 1083 }
ziv@2055 1084
adam@2079 1085 function email(s, name) {
adam@2079 1086 return inpt("email", s, name);
adam@2079 1087 }
ziv@2055 1088
adam@2079 1089 function search(s, name) {
adam@2079 1090 return inpt("search", s, name);
adam@2079 1091 }
adam@2079 1092
adam@2079 1093 function url(s, name) {
adam@2079 1094 return inpt("url", s, name);
adam@2079 1095 }
adam@2079 1096
adam@2079 1097 function tel(s, name) {
adam@2079 1098 return inpt("tel", s, name);
adam@2079 1099 }
adam@2079 1100
adam@2079 1101 function color(s, name) {
adam@2079 1102 return inpt("color", s, name);
ziv@2055 1103 }
ziv@2055 1104
adam@2080 1105 function number(s, name) {
adam@2080 1106 return inpt("number", s, name);
adam@2080 1107 }
adam@2080 1108
adam@2080 1109 function range(s, name) {
adam@2080 1110 return inpt("range", s, name);
adam@2080 1111 }
adam@2080 1112
adam@2080 1113 function date(s, name) {
adam@2080 1114 return inpt("date", s, name);
adam@2080 1115 }
adam@2080 1116
adam@2080 1117 function datetime(s, name) {
adam@2080 1118 return inpt("datetime", s, name);
adam@2080 1119 }
adam@2080 1120
adam@2080 1121 function datetime_local(s, name) {
adam@2080 1122 return inpt("datetime-local", s, name);
adam@2080 1123 }
adam@2080 1124
adam@2080 1125 function month(s, name) {
adam@2080 1126 return inpt("month", s, name);
adam@2080 1127 }
adam@2080 1128
adam@2080 1129 function week(s, name) {
adam@2080 1130 return inpt("week", s, name);
adam@2080 1131 }
adam@2080 1132
adam@2080 1133 function time(s, name) {
adam@2080 1134 return inpt("time", s, name);
adam@2080 1135 }
adam@2080 1136
adam@2080 1137
adam@1479 1138 function selectValue(x) {
adam@1479 1139 if (x.options.length == 0)
adam@1479 1140 return "";
adam@1479 1141 else
adam@1479 1142 return x.options[x.selectedIndex].value;
adam@1479 1143 }
adam@1479 1144
adam@1479 1145 function setSelectValue(x, v) {
adam@1479 1146 for (var i = 0; i < x.options.length; ++i) {
adam@1479 1147 if(x.options[i].value == v) {
adam@1479 1148 x.selectedIndex = i;
adam@1479 1149 return;
adam@1479 1150 }
adam@1479 1151 }
adam@1479 1152 }
adam@1479 1153
adamc@816 1154 function sel(s, content) {
adam@1803 1155 if (suspendScripts)
adam@1803 1156 return;
adam@1803 1157
adamc@1260 1158 var dummy = document.createElement("span");
adamc@1260 1159 dummy.innerHTML = "<select>" + content + "</select>";
adam@1479 1160 var x = input(dummy.firstChild, s, function(x) { return function(v) { if (selectValue(x) != v) setSelectValue(x, v); }; });
adam@1479 1161
adam@1479 1162 for (var i = 0; i < x.options.length; ++i) {
adam@1479 1163 if (x.options[i].value == "")
adam@1479 1164 x.options[i].value = x.options[i].text;
adam@1479 1165 else
adam@1479 1166 x.options[i].value = x.options[i].value.substring(1);
adam@1479 1167 }
adam@1479 1168
adam@1479 1169 setSelectValue(x, s.data);
adam@1479 1170 if (selectValue(x) != s.data)
adam@1479 1171 sv(s, selectValue(x));
adam@1479 1172 x.onchange = function() { sv(s, selectValue(x)) };
adamc@797 1173
adamc@1260 1174 return x;
adamc@598 1175 }
adamc@598 1176
adamc@817 1177 function chk(s) {
adam@1803 1178 if (suspendScripts)
adam@1803 1179 return;
adam@1803 1180
adamc@1260 1181 var x = input(document.createElement("input"), s,
adamc@1260 1182 function(x) { return function(v) { if (x.checked != v) x.checked = v; }; }, "checkbox");
adamc@1260 1183 x.defaultChecked = x.checked = s.data;
adam@1610 1184 x.onclick = x.onkeyup = x.oninput = x.onchange = x.onpropertychange = function() { sv(s, x.checked) };
adamc@817 1185
adamc@1260 1186 return x;
adamc@817 1187 }
adamc@817 1188
adamc@1099 1189 function tbx(s) {
adam@1803 1190 if (suspendScripts)
adam@1803 1191 return;
adam@1803 1192
adamc@1260 1193 var x = input(document.createElement("textarea"), s,
adam@1781 1194 function(x) { return function(v) { if (x.value != v) x.value = v; }; });
adamc@1260 1195 x.innerHTML = s.data;
adam@1491 1196 x.onkeyup = x.oninput = x.onchange = x.onpropertychange = function() { sv(s, x.value) };
adamc@1099 1197
adamc@1260 1198 return x;
adamc@1099 1199 }
adamc@1099 1200
adam@2012 1201 function dynClass(pnode, html, s_class, s_style) {
adam@1803 1202 if (suspendScripts)
adam@1803 1203 return;
adam@1803 1204
adam@1643 1205 var htmlCls = {v : null};
adam@1643 1206 html = flatten(htmlCls, html);
adam@1643 1207 htmlCls = htmlCls.v;
adam@1643 1208
adam@2012 1209 var dummy = document.createElement(pnode);
adam@1803 1210 suspendScripts = true;
adam@1643 1211 dummy.innerHTML = html;
adam@1803 1212 suspendScripts = false;
adam@1643 1213 var html = dummy.firstChild;
adam@1643 1214 dummy.removeChild(html);
adam@1643 1215 addNode(html);
adam@1792 1216 runScripts(html);
adam@1643 1217
adam@1751 1218 if (s_class) {
adam@1751 1219 var x = document.createElement("script");
adam@1751 1220 x.dead = false;
adam@1751 1221 x.signal = s_class;
adam@1751 1222 x.sources = null;
adam@2128 1223 x.closures = htmlCls;
phurst@1986 1224
adam@1751 1225 x.recreate = function(v) {
adam@1751 1226 for (var ls = x.closures; ls != htmlCls; ls = ls.next)
adam@1751 1227 freeClosure(ls.data);
adam@1643 1228
adam@1751 1229 var cls = {v : null};
adam@1751 1230 html.className = flatten(cls, v);
adam@1751 1231 x.closures = concat(cls.v, htmlCls);
adam@1751 1232 }
adam@1643 1233
vshabanoff@1811 1234 html.appendChild(x);
adam@1751 1235 populate(x);
adam@1751 1236 }
adam@1751 1237
adam@1751 1238 if (s_style) {
vshabanoff@1811 1239 var htmlCls2 = s_class ? null : htmlCls;
adam@2012 1240 var y = document.createElement("script");
adam@2012 1241 y.dead = false;
adam@2012 1242 y.signal = s_style;
adam@2012 1243 y.sources = null;
adam@2012 1244 y.closures = htmlCls2;
phurst@1986 1245
adam@2012 1246 y.recreate = function(v) {
adam@2012 1247 for (var ls = y.closures; ls != htmlCls2; ls = ls.next)
adam@1751 1248 freeClosure(ls.data);
adam@1751 1249
adam@1751 1250 var cls = {v : null};
adam@1751 1251 html.style.cssText = flatten(cls, v);
adam@2012 1252 y.closures = concat(cls.v, htmlCls2);
adam@1751 1253 }
adam@1751 1254
adam@2012 1255 html.appendChild(y);
adam@2012 1256 populate(y);
adam@1751 1257 }
adam@1643 1258 }
adam@1643 1259
adam@2121 1260 function bodyDynClass(s_class, s_style) {
adam@2121 1261 if (suspendScripts)
adam@2121 1262 return;
adam@2121 1263
adam@2121 1264 var htmlCls = null;
adam@2121 1265
adam@2121 1266 if (s_class) {
adam@2121 1267 var x = document.createElement("script");
adam@2121 1268 x.dead = false;
adam@2121 1269 x.signal = s_class;
adam@2121 1270 x.sources = null;
adam@2121 1271 x.closures = htmlCls;
adam@2121 1272
adam@2121 1273 x.recreate = function(v) {
adam@2121 1274 for (var ls = x.closures; ls != htmlCls; ls = ls.next)
adam@2121 1275 freeClosure(ls.data);
adam@2121 1276
adam@2121 1277 var cls = {v : null};
adam@2121 1278 document.body.className = flatten(cls, v);
adam@2121 1279 console.log("className to + " + document.body.className);
adam@2121 1280 x.closures = concat(cls.v, htmlCls);
adam@2121 1281 }
adam@2121 1282
adam@2121 1283 document.body.appendChild(x);
adam@2121 1284 populate(x);
adam@2121 1285 }
adam@2121 1286
adam@2121 1287 if (s_style) {
adam@2121 1288 var htmlCls2 = s_class ? null : htmlCls;
adam@2121 1289 var y = document.createElement("script");
adam@2121 1290 y.dead = false;
adam@2121 1291 y.signal = s_style;
adam@2121 1292 y.sources = null;
adam@2121 1293 y.closures = htmlCls2;
adam@2121 1294
adam@2121 1295 y.recreate = function(v) {
adam@2121 1296 for (var ls = y.closures; ls != htmlCls2; ls = ls.next)
adam@2121 1297 freeClosure(ls.data);
adam@2121 1298
adam@2121 1299 var cls = {v : null};
adam@2121 1300 document.body.style.cssText = flatten(cls, v);
adam@2121 1301 console.log("style to + " + document.body.style.cssText);
adam@2121 1302 y.closures = concat(cls.v, htmlCls2);
adam@2121 1303 }
adam@2121 1304
adam@2121 1305 document.body.appendChild(y);
adam@2121 1306 populate(y);
adam@2121 1307 }
adam@2121 1308 }
adam@2121 1309
adamc@800 1310 function addOnChange(x, f) {
adamc@1260 1311 var old = x.onchange;
adam@1290 1312 if (old == null)
adam@1290 1313 x.onchange = f;
adam@1290 1314 else
adam@1290 1315 x.onchange = function() { old(); f(); };
adam@1290 1316 }
adam@1290 1317
adam@1290 1318 function addOnKeyUp(x, f) {
adam@1290 1319 var old = x.onkeyup;
adam@1290 1320 if (old == null)
adam@1290 1321 x.onkeyup = f;
adam@1290 1322 else
adam@1290 1323 x.onkeyup = function(x) { old(x); f(x); };
adamc@800 1324 }
adamc@800 1325
adamc@692 1326
adamc@692 1327 // Basic string operations
adamc@692 1328
adamc@597 1329 function eh(x) {
adamc@1260 1330 if (x == null)
adamc@1260 1331 return "NULL";
adamc@1260 1332 else
adamc@1260 1333 return x.split("&").join("&amp;").split("<").join("&lt;").split(">").join("&gt;");
adamc@597 1334 }
adamc@597 1335
adamc@582 1336 function ts(x) { return x.toString() }
adamc@586 1337 function bs(b) { return (b ? "True" : "False") }
adam@2097 1338 function s2b(s) { return s == "True" ? true : s == "False" ? false : null; }
adam@2097 1339 function s2be(s) { return s == "True" ? true : s == "False" ? false : er("Illegal Boolean " ^ s); }
adamc@586 1340
adamc@1057 1341 function id(x) { return x; }
adamc@1038 1342 function sub(s, i) { return s.charAt(i); }
adamc@828 1343 function suf(s, i) { return s.substring(i); }
adamc@828 1344 function slen(s) { return s.length; }
adamc@829 1345 function sidx(s, ch) {
adamc@1260 1346 var r = s.indexOf(ch);
adamc@1260 1347 if (r == -1)
adamc@1260 1348 return null;
adamc@1260 1349 else
adamc@1260 1350 return r;
adamc@829 1351 }
dukhovni@2045 1352 function ssidx(h, n) {
dukhovni@2045 1353 var r = h.indexOf(n);
dukhovni@2045 1354 if (r == -1)
dukhovni@2045 1355 return null;
dukhovni@2045 1356 else
dukhovni@2045 1357 return r;
dukhovni@2045 1358 }
adamc@831 1359 function sspn(s, chs) {
adamc@1260 1360 for (var i = 0; i < s.length; ++i)
adamc@1260 1361 if (chs.indexOf(s.charAt(i)) != -1)
adamc@1260 1362 return i;
adamc@831 1363
adam@1793 1364 return s.length;
adamc@831 1365 }
adamc@829 1366 function schr(s, ch) {
adamc@1260 1367 var r = s.indexOf(ch);
adamc@1260 1368 if (r == -1)
adamc@1260 1369 return null;
adamc@1260 1370 else
adamc@1260 1371 return s.substring(r);
adamc@829 1372 }
adamc@829 1373 function ssub(s, start, len) {
adamc@1260 1374 return s.substring(start, start+len);
adamc@829 1375 }
adam@1624 1376 function strlenGe(s, len) {
adam@1624 1377 return s.length >= len;
adam@1624 1378 }
adamc@821 1379
adam@1621 1380 function trimZeroes(s) {
adam@1621 1381 for (var i = 0; i < s.length; ++i)
adam@1632 1382 if (s.charAt(i) != '0') {
adam@1621 1383 if (i > 0)
adam@1621 1384 return s.substring(i);
adam@1621 1385 else
adam@1621 1386 return s;
adam@1621 1387 }
adam@1621 1388
adam@1631 1389 if (s.length == 0)
adam@1621 1390 return s;
adam@1621 1391 else
adam@1631 1392 return "0";
adam@1621 1393 }
adam@1621 1394
adamc@649 1395 function pi(s) {
adam@1631 1396 var st = trimZeroes(s);
adam@1631 1397 var r = parseInt(st);
adam@1631 1398 if (r.toString() == st)
adamc@1260 1399 return r;
adamc@1260 1400 else
adamc@1260 1401 er("Can't parse int: " + s);
adamc@649 1402 }
adamc@649 1403
adamc@649 1404 function pfl(s) {
adamc@1260 1405 var r = parseFloat(s);
adamc@1260 1406 if (r.toString() == s)
adamc@1260 1407 return r;
adamc@1260 1408 else
adamc@1260 1409 er("Can't parse float: " + s);
adamc@649 1410 }
adamc@649 1411
adamc@838 1412 function pio(s) {
adam@1631 1413 var st = trimZeroes(s);
adam@1631 1414 var r = parseInt(st);
adam@1631 1415 if (r.toString() == st)
adamc@1260 1416 return r;
adamc@1260 1417 else
adamc@1260 1418 return null;
adamc@838 1419 }
adamc@838 1420
adamc@838 1421 function pflo(s) {
adamc@1260 1422 var r = parseFloat(s);
adamc@1260 1423 if (r.toString() == s)
adamc@1260 1424 return r;
adamc@1260 1425 else
adamc@1260 1426 return null;
adamc@838 1427 }
adamc@838 1428
adam@1620 1429 function parseSource(s1, s2) {
adam@1620 1430 return eval("s" + s1 + "_" + s2);
adam@1620 1431 }
adam@1620 1432
adamc@692 1433 function uf(s) {
adamc@1260 1434 if (s.length == 0)
adamc@1260 1435 return "_";
vshabanoff@1813 1436 s = s.replace(/\./g, ".2E");
vshabanoff@1813 1437 return (s.charAt(0) == '_' ? "_" : "") + encodeURIComponent(s).replace(/%/g, ".");
adamc@691 1438 }
adamc@691 1439
adamc@692 1440 function uu(s) {
adamc@1260 1441 if (s.length > 0 && s.charAt(0) == '_') {
adamc@1260 1442 s = s.substring(1);
adamc@1260 1443 } else if (s.length >= 3 && (s.charAt(0) == '%' || s.charAt(0) == '.')
adamc@1260 1444 && s.charAt(1) == '5' && (s.charAt(2) == 'f' || s.charAt(2) == 'F'))
adamc@1260 1445 s = s.substring(3);
vshabanoff@1813 1446 s = s.replace(/\+/g, " ");
vshabanoff@1813 1447 s = s.replace(/\./g, "%");
adamc@1260 1448 return decodeURIComponent(s);
adamc@905 1449 }
adamc@905 1450
adamc@1108 1451 function atr(s) {
vshabanoff@1813 1452 return s.replace(/\"/g, "&quot;").replace(/&/g, "&amp;")
vshabanoff@1813 1453 }
adamc@1108 1454
adamc@912 1455 function ub(b) {
adamc@1260 1456 return b ? "1" : "0";
adamc@912 1457 }
adamc@912 1458
adamc@905 1459 function uul(getToken, getData) {
adamc@1260 1460 var tok = getToken();
adamc@1260 1461 if (tok == "Nil") {
adamc@1260 1462 return null;
adamc@1260 1463 } else if (tok == "Cons") {
adamc@1260 1464 var d = getData();
adamc@1260 1465 var l = uul(getToken, getData);
adamc@1260 1466 return {_1:d, _2:l};
adamc@1260 1467 } else
adamc@1260 1468 whine("Can't unmarshal list (" + tok + ")");
adamc@692 1469 }
adamc@692 1470
adamc@961 1471 function strcmp(str1, str2) {
adamc@1260 1472 return ((str1 == str2) ? 0 : ((str1 > str2) ? 1 : -1));
adamc@961 1473 }
adamc@692 1474
adamc@603 1475
adamc@692 1476 // Remote calls
adamc@609 1477
adamc@703 1478 var client_id = null;
adamc@668 1479 var client_pass = 0;
adamc@668 1480 var url_prefix = "/";
adamc@673 1481 var timeout = 60;
adam@1552 1482 var isPost = false;
adamc@668 1483
adamc@668 1484 function getXHR(uri)
adamc@609 1485 {
adamc@609 1486 try {
adamc@1260 1487 return new XMLHttpRequest();
adamc@609 1488 } catch (e) {
adamc@1260 1489 try {
adamc@1260 1490 return new ActiveXObject("Msxml2.XMLHTTP");
adamc@1260 1491 } catch (e) {
adamc@1260 1492 try {
adamc@1260 1493 return new ActiveXObject("Microsoft.XMLHTTP");
adamc@1260 1494 } catch (e) {
adamc@1260 1495 whine("Your browser doesn't seem to support AJAX.");
adamc@1260 1496 }
adamc@1260 1497 }
adamc@609 1498 }
adamc@609 1499 }
adamc@609 1500
adamc@736 1501 var sig = null;
adamc@736 1502
adamc@1042 1503 var unloading = false, inFlight = null;
adamc@1042 1504
adamc@1042 1505 function unload() {
adamc@1260 1506 for (; inFlight; inFlight = inFlight.next) {
adamc@1260 1507 inFlight.data.abort();
adamc@1260 1508 }
adamc@1042 1509 }
adamc@1042 1510
adam@1691 1511 function requestUri(xhr, uri, needsSig, isRpc) {
adam@1691 1512 var extraData = null;
adam@1691 1513
adam@1691 1514 if (isRpc && uri.length > 2000) {
adam@1691 1515 extraData = uri.substring(2000);
adam@1691 1516 uri = uri.substring(0, 2000);
adam@1691 1517 }
adam@1691 1518
vshabanoff@1763 1519 xhr.open("POST", uri, !unloading);
adamc@1260 1520 xhr.setRequestHeader("Content-type", "text/plain");
adamc@668 1521
adamc@1260 1522 if (client_id != null) {
adamc@1260 1523 xhr.setRequestHeader("UrWeb-Client", client_id.toString());
adamc@1260 1524 xhr.setRequestHeader("UrWeb-Pass", client_pass.toString());
adamc@1260 1525 }
adamc@668 1526
adamc@1260 1527 if (needsSig) {
adamc@1260 1528 if (sig == null)
adamc@1260 1529 whine("Missing cookie signature!");
adamc@736 1530
adamc@1260 1531 xhr.setRequestHeader("UrWeb-Sig", sig);
adamc@1260 1532 }
adamc@736 1533
adamc@1260 1534 inFlight = cons(xhr, inFlight);
adam@1691 1535 xhr.send(extraData);
adamc@668 1536 }
adamc@668 1537
adamc@1042 1538 function xhrFinished(xhr) {
adamc@1260 1539 xhr.abort();
adamc@1260 1540 inFlight = remove(xhr, inFlight);
adamc@1042 1541 }
adamc@1042 1542
adamc@1111 1543 function unurlify(parse, s) {
adamc@1260 1544 return parse(s);
adamc@1111 1545 }
adamc@1111 1546
adam@1385 1547 function redirect(s) {
adam@1385 1548 window.location = s;
adam@1385 1549 }
adam@1385 1550
adam@1848 1551 function makeSome(isN, v) {
adam@1848 1552 if (isN)
adam@1848 1553 return {v: v};
adam@1848 1554 else
adam@1848 1555 return v;
adam@1848 1556 }
adam@1848 1557
adam@1848 1558 function rc(prefix, uri, parse, k, needsSig, isN) {
adam@1792 1559 if (!maySuspend)
adam@1794 1560 er("May not 'rpc' in main thread of 'code' for <active>");
adam@1792 1561
adamc@1260 1562 uri = cat(prefix, uri);
adamc@1260 1563 uri = flattenLocal(uri);
adamc@1260 1564 var xhr = getXHR();
adamc@609 1565
adamc@1260 1566 xhr.onreadystatechange = function() {
adamc@1260 1567 if (xhr.readyState == 4) {
adamc@1260 1568 var isok = false;
adamc@612 1569
adamc@1260 1570 try {
adamc@1260 1571 if (xhr.status == 200)
adamc@1260 1572 isok = true;
adamc@1260 1573 } catch (e) { }
adamc@612 1574
adamc@1260 1575 if (isok) {
adam@1446 1576 var lines = xhr.responseText.split("\n");
adam@1848 1577 if (lines.length != 2) {
adam@1848 1578 if (isN == null)
adam@1848 1579 whine("Bad RPC response lines");
adam@1848 1580 else
adam@1848 1581 k(null);
adam@1848 1582 } else {
adam@1848 1583 eval(lines[0]);
adam@1446 1584
adam@1848 1585 try {
adam@1848 1586 var v = parse(lines[1]);
adam@1848 1587 try {
adam@1848 1588 k(makeSome(isN, v));
adam@1848 1589 } catch (v) {
adam@1848 1590 doExn(v);
adam@1848 1591 }
adam@1848 1592 } catch (v) {
adam@1848 1593 k(null);
adam@1848 1594 }
adamc@1260 1595 }
adamc@1260 1596 } else {
adam@1848 1597 if (isN == null)
adam@1848 1598 conn();
adam@1848 1599 else
adam@1848 1600 k(null);
adamc@1260 1601 }
adamc@1260 1602
adamc@1260 1603 xhrFinished(xhr);
adamc@729 1604 }
adamc@1260 1605 };
adamc@1042 1606
adam@1691 1607 requestUri(xhr, uri, needsSig, true);
adamc@609 1608 }
adamc@667 1609
adamc@667 1610 function path_join(s1, s2) {
adamc@1260 1611 if (s1.length > 0 && s1.charAt(s1.length-1) == '/')
adamc@1260 1612 return s1 + s2;
adamc@1260 1613 else
adamc@1260 1614 return s1 + "/" + s2;
adamc@667 1615 }
adamc@667 1616
adamc@670 1617 var channels = [];
adamc@670 1618
adamc@670 1619 function newQueue() {
adamc@1260 1620 return { front : null, back : null };
adamc@670 1621 }
adamc@670 1622 function enqueue(q, v) {
adamc@1260 1623 if (q.front == null) {
adamc@1260 1624 q.front = cons(v, null);
adamc@1260 1625 q.back = q.front;
adamc@1260 1626 } else {
adamc@1260 1627 var node = cons(v, null);
adamc@1260 1628 q.back.next = node;
adamc@1260 1629 q.back = node;
adamc@1260 1630 }
adamc@670 1631 }
adamc@670 1632 function dequeue(q) {
adamc@670 1633 if (q.front == null)
adamc@1260 1634 return null;
adamc@1260 1635 else {
adamc@1260 1636 var r = q.front.data;
adamc@1260 1637 q.front = q.front.next;
adamc@1260 1638 if (q.front == null)
adamc@1260 1639 q.back = null;
adamc@1260 1640 return r;
adamc@1260 1641 }
adamc@670 1642 }
adamc@670 1643
adamc@670 1644 function newChannel() {
adamc@1260 1645 return { msgs : newQueue(), listeners : newQueue() };
adamc@670 1646 }
adamc@670 1647
adamc@667 1648 function listener() {
adamc@1260 1649 var uri = path_join(url_prefix, ".msgs");
adamc@1260 1650 var xhr = getXHR();
adamc@1260 1651 var tid, orsc, onTimeout;
adamc@673 1652
adamc@1260 1653 var connect = function () {
adamc@1260 1654 xhr.onreadystatechange = orsc;
adamc@1260 1655 tid = window.setTimeout(onTimeout, timeout * 500);
adam@1691 1656 requestUri(xhr, uri, false, false);
adamc@1260 1657 }
adamc@673 1658
adamc@1260 1659 orsc = function() {
adamc@1260 1660 if (xhr.readyState == 4) {
adamc@1260 1661 window.clearTimeout(tid);
adamc@673 1662
adamc@1260 1663 var isok = false;
adamc@667 1664
adamc@1260 1665 try {
adamc@1260 1666 if (xhr.status == 200)
adamc@1260 1667 isok = true;
adamc@1260 1668 } catch (e) { }
adamc@667 1669
adamc@1260 1670 if (isok) {
adam@1447 1671 var text = xhr.responseText;
adamc@1260 1672 if (text == "")
adamc@1260 1673 return;
adamc@1260 1674 var lines = text.split("\n");
adamc@889 1675
adam@1552 1676 if (lines.length == 1 && lines[0] == "R") {
adam@1553 1677 lameDuck = true;
adam@1553 1678
adam@1552 1679 if (isPost)
adam@1552 1680 history.back();
adam@1552 1681 else
adam@1552 1682 location.reload();
adam@1552 1683
adam@1552 1684 return;
adam@1552 1685 }
adam@1552 1686
adamc@1260 1687 if (lines.length < 2) {
adamc@1260 1688 discon();
adamc@1260 1689 return;
adamc@1260 1690 }
adamc@1260 1691
adam@1447 1692 var messageReader = function(i) {
adam@1447 1693 if (i+1 >= lines.length) {
adam@1447 1694 xhrFinished(xhr);
adam@1447 1695 connect();
adam@1447 1696 }
adam@1447 1697 else {
adam@1447 1698 var chn = lines[i];
adam@1447 1699 var msg = lines[i+1];
adamc@1260 1700
adam@1447 1701 if (chn == "E") {
adam@1447 1702 eval(msg);
adam@1447 1703 window.setTimeout(function() { messageReader(i+2); }, 0);
adam@1447 1704 } else {
adam@1447 1705 if (chn < 0)
adam@1447 1706 whine("Out-of-bounds channel in message from remote server");
adamc@1260 1707
adam@1447 1708 var ch;
adamc@1260 1709
adam@1447 1710 if (chn >= channels.length || channels[chn] == null) {
adam@1447 1711 ch = newChannel();
adam@1447 1712 channels[chn] = ch;
adam@1447 1713 } else
adam@1447 1714 ch = channels[chn];
adamc@1260 1715
adam@1447 1716 var listener = dequeue(ch.listeners);
adam@1447 1717 if (listener == null) {
adam@1447 1718 enqueue(ch.msgs, msg);
adam@1447 1719 } else {
adam@1447 1720 try {
adam@1447 1721 listener(msg);
adam@1447 1722 } catch (v) {
adam@1447 1723 doExn(v);
adam@1447 1724 }
adam@1447 1725 }
adam@1447 1726
adam@1447 1727 messageReader(i+2);
adamc@1260 1728 }
adamc@1260 1729 }
adamc@1260 1730 }
adamc@1260 1731
adam@1447 1732 messageReader(0);
adamc@1260 1733 }
adamc@1260 1734 else {
adamc@1260 1735 try {
adamc@1260 1736 if (xhr.status != 0)
adamc@1260 1737 servErr("Error querying remote server for messages: " + xhr.status);
adamc@1260 1738 } catch (e) { }
adamc@1260 1739 }
adamc@729 1740 }
adamc@1260 1741 };
adamc@669 1742
adamc@1260 1743 onTimeout = function() {
adamc@1260 1744 xhrFinished(xhr);
adamc@1260 1745 connect();
adamc@1260 1746 };
adamc@670 1747
adamc@673 1748 connect();
adamc@667 1749 }
adamc@670 1750
adamc@670 1751 function rv(chn, parse, k) {
adam@1792 1752 if (!maySuspend)
adam@1794 1753 er("May not 'recv' in main thread of 'code' for <active>");
adam@1792 1754
adamc@1260 1755 if (chn == null)
adam@1942 1756 er("Client-side code tried to recv() from a channel belonging to a different page view.");
adamc@682 1757
adamc@1260 1758 if (chn < 0)
adamc@1260 1759 whine("Out-of-bounds channel receive");
adamc@670 1760
adamc@1260 1761 var ch;
adamc@670 1762
adamc@1260 1763 if (chn >= channels.length || channels[chn] == null) {
adamc@1260 1764 ch = newChannel();
adamc@1260 1765 channels[chn] = ch;
adamc@1260 1766 } else
adamc@1260 1767 ch = channels[chn];
adamc@670 1768
adamc@1260 1769 var msg = dequeue(ch.msgs);
adamc@1260 1770 if (msg == null) {
adamc@1260 1771 enqueue(ch.listeners, function(msg) { k(parse(msg)); });
adamc@1260 1772 } else {
adamc@1260 1773 try {
adamc@1260 1774 k(parse(msg));
adamc@1260 1775 } catch (v) {
adamc@1260 1776 doExn(v);
adamc@1260 1777 }
adamc@728 1778 }
adamc@670 1779 }
adamc@693 1780
adamc@978 1781 function sl(ms, k) {
adam@1792 1782 if (!maySuspend)
adam@1794 1783 er("May not 'sleep' in main thread of 'code' for <active>");
adam@1792 1784
adamc@1260 1785 window.setTimeout(function() { k(null); }, ms);
adamc@1021 1786 }
adamc@1021 1787
adamc@1021 1788 function sp(e) {
adam@1794 1789 window.setTimeout(function() { execF(e); }, 0);
adamc@978 1790 }
adamc@978 1791
adamc@693 1792
adamc@970 1793 // The Ur interpreter
adamc@970 1794
adamc@970 1795 var urfuncs = [];
adamc@970 1796
adamc@970 1797 function lookup(env, n) {
adamc@1260 1798 while (env != null) {
adamc@1260 1799 if (n == 0)
adamc@1260 1800 return env.data;
adamc@1260 1801 else {
adamc@1260 1802 --n;
adamc@1260 1803 env = env.next;
adamc@1260 1804 }
adamc@970 1805 }
adamc@970 1806
adamc@1260 1807 whine("Out-of-bounds Ur variable reference");
adamc@970 1808 }
adamc@970 1809
adamc@974 1810 function execP(env, p, v) {
adamc@1260 1811 switch (p.c) {
adamc@1260 1812 case "w":
adamc@1260 1813 return env;
adamc@1260 1814 case "v":
adamc@1260 1815 return cons(v, env);
adamc@1260 1816 case "c":
adamc@1260 1817 if (v == p.v)
adamc@1260 1818 return env;
adamc@1260 1819 else
adamc@1260 1820 return false;
adamc@1260 1821 case "s":
adamc@1260 1822 if (v == null)
adamc@1260 1823 return false;
adamc@1260 1824 else
adamc@1260 1825 return execP(env, p.p, p.n ? v.v : v);
adamc@1260 1826 case "1":
adamc@1260 1827 if (v.n != p.n)
adamc@1260 1828 return false;
adamc@1260 1829 else
adamc@1260 1830 return execP(env, p.p, v.v);
adamc@1260 1831 case "r":
adamc@1260 1832 for (var fs = p.l; fs != null; fs = fs.next) {
adamc@1260 1833 env = execP(env, fs.data.p, v["_" + fs.data.n]);
adamc@1260 1834 if (env == false)
adamc@1260 1835 return false;
adamc@1260 1836 }
adamc@1260 1837 return env;
adamc@1260 1838 default:
adamc@1260 1839 whine("Unknown Ur pattern kind" + p.c);
adamc@974 1840 }
adamc@974 1841 }
adamc@974 1842
adamc@970 1843 function exec0(env, e) {
adamc@1260 1844 return exec1(env, null, e);
adamc@1020 1845 }
adamc@1020 1846
adamc@1020 1847 function exec1(env, stack, e) {
adamc@1260 1848 var stack, usedK = false;
adamc@970 1849
adamc@1260 1850 var saveEnv = function() {
adamc@1260 1851 if (stack.next != null && stack.next.data.c != "<")
adamc@1260 1852 stack = cons({c: "<", env: env}, stack.next);
adamc@1260 1853 else
adamc@1260 1854 stack = stack.next;
adamc@1260 1855 };
adamc@983 1856
adamc@1260 1857 while (true) {
adamc@1260 1858 switch (e.c) {
adamc@1260 1859 case "c":
adamc@1260 1860 var v = e.v;
adamc@1260 1861 if (stack == null)
adamc@1260 1862 return v;
adamc@1260 1863 var fr = stack.data;
adamc@970 1864
adamc@1260 1865 switch (fr.c) {
adamc@1260 1866 case "s":
adamc@1260 1867 e = {c: "c", v: {v: v}};
adamc@1260 1868 stack = stack.next;
adamc@1260 1869 break;
adamc@1260 1870 case "1":
adamc@1260 1871 e = {c: "c", v: {n: fr.n, v: v}};
adamc@1260 1872 stack = stack.next;
adamc@1260 1873 break;
adamc@1260 1874 case "f":
adamc@1260 1875 fr.args[fr.pos++] = v;
adamc@1260 1876 if (fr.a == null) {
adamc@1260 1877 var res;
adamc@1260 1878 stack = stack.next;
adamc@1035 1879
adamc@1260 1880 if (fr.f.apply)
adamc@1260 1881 res = fr.f.apply(null, fr.args);
adamc@1260 1882 else if (fr.args.length == 0)
adamc@1260 1883 res = fr.f();
adamc@1260 1884 else if (fr.args.length == 1)
adamc@1260 1885 res = fr.f(fr.args[0]);
adamc@1260 1886 else if (fr.args.length == 2)
adamc@1260 1887 res = fr.f(fr.args[0], fr.args[1]);
adamc@1260 1888 else if (fr.args.length == 3)
adamc@1260 1889 res = fr.f(fr.args[0], fr.args[1], fr.args[2]);
adamc@1260 1890 else if (fr.args.length == 4)
adamc@1260 1891 res = fr.f(fr.args[0], fr.args[1], fr.args[2], fr.args[3]);
adamc@1260 1892 else if (fr.args.length == 5)
adamc@1260 1893 res = fr.f(fr.args[0], fr.args[1], fr.args[2], fr.args[3], fr.args[4]);
adamc@1260 1894 else
adamc@1260 1895 whine("Native function has " + fr.args.length + " args, but there is no special case for that count.");
adamc@1035 1896
adamc@1260 1897 e = {c: "c", v: res};
adamc@1260 1898 if (usedK) return null;
adamc@1260 1899 } else {
adamc@1260 1900 e = fr.a.data;
adamc@1260 1901 fr.a = fr.a.next;
adamc@1260 1902 }
adamc@1260 1903 break;
adamc@1260 1904 case "a1":
adamc@1260 1905 e = fr.x;
adamc@1260 1906 stack = cons({c: "a2", f: v}, stack.next);
adamc@1260 1907 break;
adamc@1260 1908 case "a2":
adamc@1260 1909 if (fr.f == null)
adamc@1260 1910 whine("Ur: applying null function");
adamc@1260 1911 else if (fr.f.body) {
adamc@1260 1912 saveEnv();
adamc@1260 1913 env = cons(v, fr.f.env);
adamc@1260 1914 e = fr.f.body;
adamc@1260 1915 } else {
adamc@1260 1916 e = {c: "c", v: fr.f(v)};
adamc@1260 1917 stack = stack.next;
adamc@1260 1918 }
adamc@1260 1919 break;
adamc@1260 1920 case "<":
adamc@1260 1921 env = fr.env;
adamc@1260 1922 stack = stack.next;
adamc@1260 1923 break;
adamc@1260 1924 case "r":
adamc@1260 1925 fr.fs["_" + fr.n] = v;
adamc@1260 1926 if (fr.l == null) {
adamc@1260 1927 e = {c: "c", v: fr.fs};
adamc@1260 1928 stack = stack.next;
adamc@1260 1929 } else {
adamc@1260 1930 fr.n = fr.l.data.n;
adamc@1260 1931 e = fr.l.data.v;
adamc@1260 1932 fr.l = fr.l.next;
adamc@1260 1933 }
adamc@1260 1934 break;
adamc@1260 1935 case ".":
adamc@1260 1936 e = {c: "c", v: v["_" + fr.f]};
adamc@1260 1937 stack = stack.next;
adamc@1260 1938 break;
adamc@1260 1939 case ";":
adamc@1260 1940 e = fr.e2;
adamc@1260 1941 stack = stack.next;
adamc@1260 1942 break;
adamc@1260 1943 case "=":
adamc@1260 1944 saveEnv();
adamc@1260 1945 env = cons(v, env);
adamc@1260 1946 e = fr.e2;
adamc@1260 1947 break;
adamc@1260 1948 case "m":
adamc@1260 1949 var ps;
adamc@1260 1950 for (ps = fr.p; ps != null; ps = ps.next) {
adamc@1260 1951 var r = execP(env, ps.data.p, v);
adamc@1260 1952 if (r != false) {
adamc@1260 1953 saveEnv();
adamc@1260 1954 env = r;
adamc@1260 1955 e = ps.data.b;
adamc@1260 1956 break;
adamc@1260 1957 }
adamc@1260 1958 }
adamc@1260 1959 if (ps == null)
adamc@1260 1960 whine("Match failure in Ur interpretation");
adamc@1260 1961 break;
adamc@1260 1962 default:
adamc@1260 1963 whine("Unknown Ur continuation kind " + fr.c);
adamc@1260 1964 }
adamc@1260 1965
adamc@1260 1966 break;
adamc@1260 1967 case "v":
adamc@1260 1968 e = {c: "c", v: lookup(env, e.n)};
adamc@1260 1969 break;
adamc@1260 1970 case "n":
adamc@1260 1971 var idx = e.n;
adamc@1260 1972 e = urfuncs[idx];
adamc@1260 1973 if (e.c == "t")
adamc@1262 1974 e = urfuncs[idx] = eval("(" + e.f + ")");
adamc@1260 1975 break;
adamc@1260 1976 case "s":
adamc@1260 1977 stack = cons({c: "s"}, stack);
adamc@1260 1978 e = e.v;
adamc@1260 1979 break;
adamc@1260 1980 case "1":
adamc@1260 1981 stack = cons({c: "1", n: e.n}, stack);
adamc@1260 1982 e = e.v;
adamc@1260 1983 break;
adamc@1260 1984 case "f":
adamc@1260 1985 if (e.a == null)
adam@1798 1986 e = {c: "c", v: e.f()};
adamc@1260 1987 else {
adamc@1260 1988 var args = [];
adam@1798 1989 stack = cons({c: "f", f: e.f, args: args, pos: 0, a: e.a.next}, stack);
adamc@1260 1990 if (!e.a.data.c) alert("[2] fr.f = " + e.f + "; 0 = " + e.a.data);
adamc@1260 1991 e = e.a.data;
adamc@1260 1992 }
adamc@1260 1993 break;
adamc@1260 1994 case "l":
adamc@1260 1995 e = {c: "c", v: {env: env, body: e.b}};
adamc@1260 1996 break;
adamc@1260 1997 case "a":
adamc@1260 1998 stack = cons({c: "a1", x: e.x}, stack);
adamc@1260 1999 e = e.f;
adamc@1260 2000 break;
adamc@1260 2001 case "r":
adamc@1260 2002 if (e.l == null)
adamc@1260 2003 whine("Empty Ur record in interpretation");
adamc@1260 2004 var fs = {};
adamc@1260 2005 stack = cons({c: "r", n: e.l.data.n, fs: fs, l: e.l.next}, stack);
adamc@1260 2006 e = e.l.data.v;
adamc@1260 2007 break;
adamc@1260 2008 case ".":
adamc@1260 2009 stack = cons({c: ".", f: e.f}, stack);
adamc@1260 2010 e = e.r;
adamc@1260 2011 break;
adamc@1260 2012 case ";":
adamc@1260 2013 stack = cons({c: ";", e2: e.e2}, stack);
adamc@1260 2014 e = e.e1;
adamc@1260 2015 break;
adamc@1260 2016 case "=":
adamc@1260 2017 stack = cons({c: "=", e2: e.e2}, stack);
adamc@1260 2018 e = e.e1;
adamc@1260 2019 break;
adamc@1260 2020 case "m":
adamc@1260 2021 stack = cons({c: "m", p: e.p}, stack);
adamc@1260 2022 e = e.e;
adamc@1260 2023 break;
adamc@1260 2024 case "e":
adamc@1260 2025 e = {c: "c", v: cs({c: "wc", env: env, body: e.e})};
adamc@1260 2026 break;
adamc@1260 2027 case "wc":
adamc@1260 2028 env = e.env;
adamc@1260 2029 e = e.body;
adamc@1260 2030 break;
adamc@1260 2031 case "K":
adamc@1260 2032 { var savedStack = stack.next, savedEnv = env;
adamc@1260 2033 e = {c: "c", v: function(v) { return exec1(savedEnv, savedStack, {c: "c", v: v}); } };}
adamc@1260 2034 usedK = true;
rmbruijn@1597 2035 break;
adamc@1260 2036 default:
adamc@1260 2037 whine("Unknown Ur expression kind " + e.c);
adamc@970 2038 }
adamc@970 2039 }
adamc@970 2040 }
adamc@970 2041
adamc@976 2042 function execD(e) {
adamc@1260 2043 return exec0(null, e);
adamc@976 2044 }
adamc@976 2045
adamc@970 2046 function exec(e) {
adamc@1260 2047 var r = exec0(null, e);
adamc@970 2048
adamc@1260 2049 if (r != null && r.body != null)
adamc@1260 2050 return function(v) { return exec0(cons(v, r.env), r.body); };
adamc@1260 2051 else
adamc@1260 2052 return r;
adamc@895 2053 }
adamc@895 2054
adamc@977 2055 function execF(f, x) {
adamc@1260 2056 return exec0(cons(x, f.env), f.body);
adamc@977 2057 }
adamc@977 2058
adamc@895 2059
adam@1290 2060 // Wrappers
adam@1290 2061
adam@1290 2062 function confrm(s) {
adam@1290 2063 return confirm(s) ? true : false;
adam@1290 2064 }
adam@1290 2065
adam@1290 2066
adamc@1323 2067 // URL blessing
adamc@1323 2068
adamc@1323 2069 var urlRules = null;
adamc@1323 2070
adamc@1323 2071 function checkUrl(s) {
adamc@1323 2072 for (var r = urlRules; r; r = r.next) {
adamc@1323 2073 var ru = r.data;
adamc@1323 2074 if (ru.prefix ? s.indexOf(ru.pattern) == 0 : s == ru.pattern)
adamc@1323 2075 return ru.allow ? s : null;
adamc@1323 2076 }
adamc@1323 2077
adamc@1323 2078 return null;
adamc@1323 2079 }
adamc@1323 2080
adamc@1323 2081 function bless(s) {
adamc@1323 2082 u = checkUrl(s);
adamc@1323 2083 if (u == null)
adamc@1323 2084 er("Disallowed URL: " + s);
adamc@1323 2085 return u;
adamc@1323 2086 }
adamc@1323 2087
adam@1556 2088
adam@2008 2089 // Attribute name blessing
adam@2008 2090
adam@2008 2091 function blessData(s) {
adam@2008 2092 for (var i = 0; i < s.length; ++i) {
adam@2008 2093 var c = s[i];
adam@2008 2094 if (!isAlnum(c) && c != '-' && c != '_')
adam@2008 2095 er("Disallowed character in data-* attribute name");
adam@2008 2096 }
adam@2008 2097
adam@2008 2098 return s;
adam@2008 2099 }
adam@2008 2100
adam@2008 2101
adam@1755 2102 // CSS validation
adam@1755 2103
adam@1755 2104 function atom(s) {
adam@1755 2105 for (var i = 0; i < s.length; ++i) {
adam@1755 2106 var c = s[i];
adam@1755 2107 if (!isAlnum(c) && c != '+' && c != '-' && c != '.' && c != '%' && c != '#')
adam@1755 2108 er("Disallowed character in CSS atom");
adam@1755 2109 }
adam@1755 2110
adam@1755 2111 return s;
adam@1755 2112 }
adam@1755 2113
adam@1755 2114 function css_url(s) {
adam@1755 2115 for (var i = 0; i < s.length; ++i) {
adam@1755 2116 var c = s[i];
adam@1755 2117 if (!isAlnum(c) && c != ':' && c != '/' && c != '.' && c != '_' && c != '+'
adam@1755 2118 && c != '-' && c != '%' && c != '?' && c != '&' && c != '=' && c != '#')
adam@1755 2119 er("Disallowed character in CSS URL");
adam@1755 2120 }
adam@1755 2121
adam@1755 2122 return s;
adam@1755 2123 }
adam@1755 2124
adam@1755 2125 function property(s) {
adam@1755 2126 if (s.length <= 0)
adam@1755 2127 er("Empty CSS property");
adam@1755 2128
adam@1755 2129 if (!isLower(s[0]) && s[0] != '_')
adam@1755 2130 er("Bad initial character in CSS property");
adam@1755 2131
adam@1755 2132 for (var i = 0; i < s.length; ++i) {
adam@1755 2133 var c = s[i];
adam@1755 2134 if (!isLower(c) && !isDigit(c) && c != '_' && c != '-')
adam@1755 2135 er("Disallowed character in CSS property");
adam@1755 2136 }
adam@1755 2137
adam@1755 2138 return s;
adam@1755 2139 }
adam@1755 2140
adam@1755 2141
adam@1556 2142 // ID generation
adam@1556 2143
adam@1556 2144 var nextId = 0;
adam@1556 2145
adam@1556 2146 function fresh() {
adam@1703 2147 return "uw" + (--nextId);
adam@1556 2148 }
adam@1556 2149
adam@1785 2150 function giveFocus(id) {
adam@1803 2151 var node = document.getElementById(id);
adam@1785 2152
adam@1803 2153 if (node)
adam@1803 2154 node.focus();
adam@1803 2155 else
adam@1803 2156 er("Tried to give focus to ID not used in document: " + id);
adam@1785 2157 }
adam@1785 2158
rmbruijn@1597 2159
adamc@693 2160 // App-specific code