34
40
/** Creates a DOM element with simple text inside it.
35
41
* \param tagname String. Name of the element's tag (eg. "p").
36
42
* \param text String. Text to be placed inside the element.
43
* \param title String, optional. Tooltip for the text.
44
* (Note, title creates a span element around the text).
37
45
* \return DOM Element object.
39
function dom_make_text_elem(tagname, text)
47
function dom_make_text_elem(tagname, text, title)
49
if (text == null) text = "";
41
50
var elem = document.createElement(tagname);
42
elem.appendChild(document.createTextNode(text));
53
textnode = document.createTextNode(text);
56
textnode = document.createElement("span");
57
textnode.setAttribute("title", title);
58
textnode.appendChild(document.createTextNode(text));
60
elem.appendChild(textnode);
46
64
/** Creates a DOM element with hyperlinked text inside it.
47
65
* \param tagname String. Name of the element's tag (eg. "p").
48
66
* \param text String. Text to be placed inside the element.
67
* \param title String, optional. Sets a tooltip for the link.
49
68
* \param href String. URL the text will link to. This is a raw string,
50
69
* it will automatically be URL-encoded.
51
70
* \param onclick Optional string. Will be set as the "onclick" attribute
52
71
* of the "a" element.
72
* \param dontencode Optional boolean. If true, will not encode the href.
73
* if including query strings, you must set this to true and use build_url
74
* to escape the URI correctly.
53
75
* \return DOM Element object.
55
function dom_make_link_elem(tagname, text, href, onclick)
77
function dom_make_link_elem(tagname, text, title, href, onclick, dontencode)
79
if (text == null) text = "";
80
if (href == null) href = "";
57
81
var elem = document.createElement(tagname);
58
82
var link = document.createElement("a");
59
link.setAttribute("href", encodeURI(href));
83
if (dontencode != true)
84
href = urlencode_path(href);
85
link.setAttribute("href", href);
87
link.setAttribute("title", title);
60
88
if (onclick != null)
61
89
link.setAttribute("onclick", onclick);
62
90
link.appendChild(document.createTextNode(text));
95
/** Creates a DOM img element. All parameters are optional except src.
96
* If alt (compulsory in HTML) is omitted, will be set to "".
98
function dom_make_img(src, width, height, title, alt)
100
var img = document.createElement("img");
101
img.setAttribute("src", urlencode_path(src));
103
img.setAttribute("width", width);
105
img.setAttribute("height", height);
107
img.setAttribute("title", title);
108
if (alt == null) alt = "";
109
img.setAttribute("alt", alt);
113
/** Given a number of bytes, returns a string representing the file size in a
114
* human-readable format.
115
* eg. nice_filesize(6) -> "6 bytes"
116
* nice_filesize(81275) -> "79.4 kB"
117
* nice_filesize(13498346) -> "12.9 MB"
118
* \param bytes Number of bytes. Must be an integer.
121
function nice_filesize(bytes)
123
if (bytes == null) return "";
126
return bytes.toString() + " B";
129
return size.toFixed(1) + " kB";
132
return size.toFixed(1) + " MB";
134
return size.toFixed(1) + " GB";
67
137
/** Given a URL, returns an object containing a number of attributes
68
138
* describing the components of the URL, similar to CGI request variables.
69
139
* The object has the following attributes:
84
154
* args is never null, though it may be empty.
86
156
* All strings are decoded/unescaped. Reserved characters
87
* (; , / ? : @ & = + * $) are not decoded except in args.
157
* (; , / ? : @ & = + * $) are not decoded except in args and path.
89
159
* \param url String. A URL. To read from the current browser window, use
90
160
* window.location.href.
242
311
url += ":" + obj.server_port.toString();
243
312
if (("path" in obj) && obj.path != null)
245
var path = obj.path.toString();
314
var path = urlencode_path(obj.path.toString());
246
315
if (url.length > 0 && path.length > 0 && path[0] != "/")
247
316
path = "/" + path;
250
319
if (("query_string" in obj) && obj.query_string != null)
251
query_string = obj.query_string.toString();
320
query_string = encodeURI(obj.query_string.toString());
252
321
else if (("args" in obj) && obj.args != null)
253
322
query_string = make_query_string(obj.args);
255
324
if (query_string != null)
256
325
url += "?" + query_string;
258
return encodeURI(url);
330
/** URL-encodes a path. This is a special case of URL encoding as all
331
* characters *except* the slash must be encoded.
333
function urlencode_path(path)
335
/* Split up the path, URLEncode each segment with encodeURIComponent,
338
var split = path.split('/');
339
for (var i=0; i<split.length; i++)
340
split[i] = encodeURIComponent(split[i]);
341
path = path_join.apply(null, split);
342
if (split[0] == "" && split.length > 1) path = "/" + path;
261
346
/** Given an argument map, as output in the args parameter of the return of
409
/** Builds a multipart_formdata string from an args object. Similar to
410
* make_query_string, but it returns data of type "multipart/form-data"
411
* instead of "application/x-www-form-urlencoded". This is good for
412
* encoding large strings such as text objects from the editor.
413
* Should be written with a Content-Type of
414
* "multipart/form-data, boundary=<boundary>".
415
* All fields are sent with a Content-Type of text/plain.
416
* \param args Args object as described in parse_url.
417
* \param boundary Random "magic" string which DOES NOT appear in any of
418
* the argument values. This should match the "boundary=" value written to
419
* the Content-Type header.
420
* \return String in multipart/form-data format.
422
function make_multipart_formdata(args, boundary)
427
var extend_data = function(arg_key, arg_val)
429
/* FIXME: Encoding not supported here (should not matter if we
430
* only use ASCII names */
431
data += "--" + boundary + "\r\n"
432
+ "Content-Disposition: form-data; name=\"" + arg_key
437
for (var arg_key in args)
439
arg_val = args[arg_key];
440
if (arg_val instanceof Array)
441
for (var i=0; i<arg_val.length; i++)
443
extend_data(arg_key, arg_val[i]);
446
extend_data(arg_key, arg_val);
449
data += "--" + boundary + "--\r\n";
323
454
/** Converts a list of directories into a path name, with a slash at the end.
324
455
* \param pathlist List of strings.
325
456
* \return String.
340
471
return path_join(root_dir, path);
474
/** Shorthand for make_path(path_join(app, ...))
475
* Creates an absolute path for a given path within a given app.
477
function app_path(app /*,...*/)
479
return make_path(path_join.apply(null, arguments));
482
/** Given a path, gets the "basename" (the last path segment).
484
function path_basename(path)
486
segments = path.split("/");
487
if (segments[segments.length-1].length == 0)
488
return segments[segments.length-2];
490
return segments[segments.length-1];
493
/** Given a string str, determines whether it ends with substr */
494
function endswith(str, substring)
496
if (str.length < substring.length) return false;
497
return str.substr(str.length - substring.length) == substring;
500
/** Equivalent to Python's repr.
501
* Gets the JavaScript string representation.
502
* Actually just calls JSON.stringify.
506
return JSON.stringify(str);
509
/** Removes all occurences of a value from an array.
511
Array.prototype.removeall = function(val)
516
for (i=0; i<arr.length; i++)
519
if (arr[i] != val) j++;
343
524
/** Makes an XMLHttpRequest call to the server. Waits (synchronously) for a
344
525
* response, and returns an XMLHttpRequest object containing the completed
348
529
* \param path URL path to make the request to, within the application.
349
530
* \param args Argument object, as described in parse_url and friends.
350
531
* \param method String; "GET" or "POST"
532
* \param content_type String, optional. Only applies if method is "POST".
533
* May be "application/x-www-form-urlencoded" or "multipart/form-data".
534
* Defaults to "application/x-www-form-urlencoded".
351
535
* \return An XMLHttpRequest object containing the completed response.
353
function ajax_call(app, path, args, method)
537
function ajax_call(app, path, args, method, content_type)
355
path = make_path(path_join(app, path));
539
if (content_type != "multipart/form-data")
540
content_type = "application/x-www-form-urlencoded";
541
path = app_path(app, path);
543
/* A random string, for multipart/form-data
544
* (This is not checked against anywhere else, it is solely defined and
545
* used within this function) */
546
var boundary = "48234n334nu7n4n2ynonjn234t683jyh80j";
357
547
var xhr = new XMLHttpRequest();
358
548
if (method == "GET")
362
552
/* open's 3rd argument = false -> SYNCHRONOUS (wait for response)
363
553
* (No need for a callback function) */
364
554
xhr.open(method, url, false);
369
559
/* POST sends the args in application/x-www-form-urlencoded */
370
560
url = encodeURI(path);
371
561
xhr.open(method, url, false);
372
xhr.setRequestHeader("Content-Type",
373
"application/x-www-form-urlencoded");
374
var message = make_query_string(args);
563
if (content_type == "multipart/form-data")
565
xhr.setRequestHeader("Content-Type",
566
"multipart/form-data, boundary=" + boundary);
567
message = make_multipart_formdata(args, boundary);
571
xhr.setRequestHeader("Content-Type", content_type);
572
message = make_query_string(args);
375
574
xhr.send(message);