320
321
else if (("args" in obj) && obj.args != null)
321
322
query_string = make_query_string(obj.args);
323
if (query_string != "" && query_string != null)
324
if (query_string != null)
324
325
url += "?" + query_string;
345
/** Writes a JSONable object to the cookie under a particular key
346
* (JSON encoded and URL encoded).
348
function write_cookie(key, value)
350
var sendstr = encodeURIComponent(key) + "="
351
+ encodeURIComponent(JSON.stringify(value))
352
+ "; path=" + urlencode_path(root_dir);
353
/* This actually just assigns to the key, not replacing the whole cookie
354
* as it appears to. */
355
document.cookie = sendstr;
357
/** Reads a cookie which has a JSONable object encoded as its value.
358
* Returns the object, parsed from JSON.
360
function read_cookie(key)
362
var cookies = document.cookie.split(";");
363
var checkstart = encodeURIComponent(key) + "=";
364
var checklen = checkstart.length;
365
for (var i=0; i<cookies.length; i++)
367
var cookie = cookies[i];
368
while (cookie[0] == ' ')
369
cookie = cookie.substr(1);
370
if (cookie.substr(0, checklen) == checkstart)
372
var valstr = cookie.substr(checklen);
373
valstr = decodeURIComponent(valstr);
374
return JSON.parse(valstr);
379
346
/** Given an argument map, as output in the args parameter of the return of
380
347
* parseurl, gets the first occurence of an argument in the URL string.
381
348
* If the argument was not found, returns null.
512
479
return make_path(path_join.apply(null, arguments));
515
/** Generates an absolute URL to a public application
517
function public_app_path(app /*,...*/)
519
return location.protocol + "//" + public_host
520
+ make_path(path_join.apply(null, arguments));
523
482
/** Given a path, gets the "basename" (the last path segment).
525
484
function path_basename(path)
562
521
arr.splice(j, i-j);
565
/** Shallow-clones an object */
566
function shallow_clone_object(obj)
574
/** Returns a new XMLHttpRequest object, in a somewhat browser-agnostic
577
function new_xmlhttprequest()
582
return new XMLHttpRequest();
586
/* Internet Explorer */
589
return new ActiveXObject("Msxml2.XMLHTTP");
595
return new ActiveXObject("Microsoft.XMLHTTP");
599
throw("Your browser does not support AJAX. "
600
+ "IVLE requires a modern browser.");
606
/** Makes an asynchronous XMLHttpRequest call to the server.
607
* Sends the XMLHttpRequest object containing the completed response to a
608
* specified callback function.
524
/** Makes an XMLHttpRequest call to the server. Waits (synchronously) for a
525
* response, and returns an XMLHttpRequest object containing the completed
610
* \param callback A callback function. Will be called when the response is
611
* complete. Passed 1 parameter, an XMLHttpRequest object containing the
612
* completed response.
613
528
* \param app IVLE app to call (such as "fileservice").
614
529
* \param path URL path to make the request to, within the application.
615
530
* \param args Argument object, as described in parse_url and friends.
617
532
* \param content_type String, optional. Only applies if method is "POST".
618
533
* May be "application/x-www-form-urlencoded" or "multipart/form-data".
619
534
* Defaults to "application/x-www-form-urlencoded".
535
* \return An XMLHttpRequest object containing the completed response.
621
function ajax_call(callback, app, path, args, method, content_type)
537
function ajax_call(app, path, args, method, content_type)
623
539
if (content_type != "multipart/form-data")
624
540
content_type = "application/x-www-form-urlencoded";
628
544
* (This is not checked against anywhere else, it is solely defined and
629
545
* used within this function) */
630
546
var boundary = "48234n334nu7n4n2ynonjn234t683jyh80j";
631
var xhr = new_xmlhttprequest();
632
xhr.onreadystatechange = function()
634
if (xhr.readyState == 4)
547
var xhr = new XMLHttpRequest();
639
548
if (method == "GET")
641
550
/* GET sends the args in the URL */
642
551
url = build_url({"path": path, "args": args});
643
/* open's 3rd argument = true -> asynchronous */
644
xhr.open(method, url, true);
552
/* open's 3rd argument = false -> SYNCHRONOUS (wait for response)
553
* (No need for a callback function) */
554
xhr.open(method, url, false);
649
559
/* POST sends the args in application/x-www-form-urlencoded */
650
560
url = encodeURI(path);
651
xhr.open(method, url, true);
561
xhr.open(method, url, false);
653
563
if (content_type == "multipart/form-data")