23
/* Url names for apps */
26
service_app = "fileservice";
28
download_app = "download";
30
/* Mapping MIME types onto handlers.
31
* "text" : When navigating to a text file, the text editor is opened.
32
* "image" : When navigating to an image, the image is displayed (rather than
33
* going to the text editor).
34
* "audio" : When navigating to an audio file, a "play" button is presented.
35
* "binary" : When navigating to a binary file, offer it as a download through
38
* If a file is not on the list, its default action is determined by the first
39
* part of its content type, where "text/*", "image/*" and "audio/*" are
40
* treated as above, and other types are simply treated as binary.
43
"application/x-javascript" : "text",
44
"application/javascript" : "text",
45
"application/json" : "text",
46
"application/xml" : "text"
49
/* Mapping MIME types to icons, just the file's basename */
51
"text/directory": "dir.png",
52
"text/x-python": "py.png"
55
default_type_icon = "txt.png";
57
/* Relative to IVLE root */
58
type_icons_path = "media/images/mime";
59
type_icons_path_large = "media/images/mime/large";
61
/* Mapping SVN status to icons, just the file's basename */
64
"normal": "normal.png",
66
"missing": "missing.png",
67
"deleted": "deleted.png",
68
"modified": "modified.png",
69
"conflicted": "conflicted.png",
70
"revision": "revision.png"
73
/* Mapping SVN status to "nice" strings */
75
"unversioned": "Temporary file",
76
"normal": "Permanent file",
77
"added": "Temporary file (scheduled to be added)",
78
"missing": "Permanent file (missing)",
79
"deleted": "Permanent file (scheduled for deletion)",
80
"replaced": "Permanent file (replaced)",
81
"modified": "Permanent file (modified)",
82
"merged": "Permanent file (merged)",
83
"conflicted": "Permanent file (conflicted)",
84
"revision": "Past Permanent file (revision)"
87
default_svn_icon = null;
88
default_svn_nice = "Unknown status";
90
svn_icons_path = "media/images/svn";
92
published_icon = "media/images/interface/published.png";
94
/* List of MIME types considered "executable" by the system.
95
* Executable files offer a "run" link, implying that the "serve"
96
* application can interpret them.
103
/* Global variables */
105
/** The listing object returned by the server as JSON */
108
current_revision = null;
111
/** Filenames of all files selected
112
* (Only used by dir listings, but still needs to be [] for files, so that
113
* update_actions knows that nothing is selected).
117
upload_callback_count = 0; /* See upload_callback */
119
/** Calls the server using Ajax, performing an action on the server side.
120
* Receives the response from the server and performs a refresh of the page
121
* contents, updating it to display the returned data (such as a directory
122
* listing, file preview, or editor pane).
123
* Always makes a POST request.
126
* \param action String. Name of the action to perform, as defined in the
128
* \param path URL path to make the request to, within the application.
129
* \param args Argument object, as described in util.parse_url and friends.
130
* This should contain the arguments to the action, but NOT the action
131
* itself. (Also a minor side-effect; the "args" object will be mutated
132
* to include the action attribute).
133
* \param content_type String, optional.
134
* May be "application/x-www-form-urlencoded" or "multipart/form-data".
135
* Defaults to "application/x-www-form-urlencoded".
136
* "multipart/form-data" is recommended for large uploads.
138
function do_action(action, path, args, content_type, ignore_response)
140
args.action = action;
141
/* Callback action, when the server returns */
142
var callback = function(response)
144
/* Check for action errors reported by the server, and report them
146
var error = response.getResponseHeader("X-IVLE-Action-Error");
148
/* Note: This header (in particular) comes URI-encoded, to
149
* allow multi-line error messages. Decode */
150
alert("Error: " + decodeURIComponent(error.toString()) + ".");
151
/* Now read the response and set up the page accordingly */
152
if (ignore_response != true)
153
handle_response(path, response, true);
155
/* Call the server and perform the action. This mutates the server. */
156
ajax_call(callback, service_app, path, args, "POST", content_type);
159
/** Calls the server using Ajax, requesting a directory listing. This should
160
* not modify the server in any way. Receives the response from the server and
161
* performs a refresh of the page contents, updating it to display the
162
* returned data (such as a directory listing, file preview, or editor pane).
163
* Called "navigate", can also be used for a simple refresh.
164
* Always makes a GET request.
167
function navigate(path)
169
callback = function(response)
171
/* Read the response and set up the page accordingly */
172
handle_response(path, response, false, url.args);
174
/* Get any query strings */
175
url = parse_url(window.location.href);
177
/* Call the server and request the listing. */
178
ajax_call(callback, service_app, path, url.args, "GET");
181
/* Refreshes the current view.
182
* Calls navigate on the current path.
186
if (maybe_save('All changes since the last save will be lost!'))
187
navigate(current_path);
190
/** Determines the "handler type" from a MIME type.
191
* The handler type is a string, either "text", "image", "audio" or "binary".
193
function get_handler_type(content_type)
197
if (content_type in type_handlers)
198
return type_handlers[content_type];
200
{ /* Based on the first part of the MIME type */
201
var handler_type = content_type.split('/')[0];
202
if (handler_type != "text" && handler_type != "image" &&
203
handler_type != "audio")
204
handler_type = "binary";
209
/** Given an HTTP response object, cleans up and rebuilds the contents of the
210
* page using the response data. This does not navigate away from the page, it
211
* merely rebuilds most of the data.
212
* Note that depending on the type of data returned, this could result in a
213
* directory listing, an image preview, an editor pane, etc.
214
* Figures out the type and calls the appropriate function.
215
* \param path URL path which the request was made for. This can (among other
216
* things) be used to update the URL in the location bar.
217
* \param response XMLHttpRequest object returned by the server. Should
218
* contain all the response data.
219
* \param is_action Boolean. True if this is the response to an action, false
220
* if this is the response to a simple listing. This is used in handling the
222
* \param url_args Arguments dict, for the arguments passed to the URL
223
* in the browser's address bar (will be forwarded along).
225
function handle_response(path, response, is_action, url_args)
227
/* TODO: Set location bar to "path" */
230
/* Clear away the existing page contents */
233
/* Check the status, and if not 200, read the error and handle this as an
235
if (response.status != 200)
237
var error = response.getResponseHeader("X-IVLE-Return-Error");
239
error = response.statusText;
245
var top_level_dir = path==username;
248
var req = ajax_call(null, "userservice", "get_enrolments", null, "GET")
249
subjects = decode_response(req);
253
/* This will always return a listing, whether it is a dir or a file.
255
var listing = response.responseText;
256
/* The listing SHOULD be valid JSON text. Parse it into an object. */
259
listing = JSON.parse(listing);
260
file_listing = listing.listing; /* Global */
266
var err = document.createElement("div");
267
var p = dom_make_text_elem("p", "Error: "
268
+ "There was an unexpected server error processing "
269
+ "the selected command.");
271
p = dom_make_text_elem("p", "If the problem persists, please "
272
+ "contact the system administrator.")
274
p = document.createElement("p");
275
var refresh = document.createElement("input");
276
refresh.setAttribute("type", "button");
277
refresh.setAttribute("value", "Back to file view");
278
refresh.setAttribute("onclick", "refresh()");
279
p.appendChild(refresh);
285
var err = document.createElement("div");
286
var p = dom_make_text_elem("p", "Error: "
287
+ "There was an unexpected server error retrieving "
288
+ "the requested file or directory.");
290
p = dom_make_text_elem("p", "If the problem persists, please "
291
+ "contact the system administrator.")
297
/* Get "." out, it's special */
298
current_file = file_listing["."]; /* Global */
299
delete file_listing["."];
301
if ('revision' in listing)
303
current_revision = listing.revision;
306
/* Check if this is a directory listing or file contents */
307
var isdir = response.getResponseHeader("X-IVLE-Return") == "Dir";
311
home_listing(listing, subjects, path);
315
/* Need to make a 2nd ajax call, this time get the actual file
317
callback = function(response)
319
/* Read the response and set up the page accordingly */
320
handle_contents_response(path, response);
322
/* Call the server and request the listing. */
324
args = shallow_clone_object(url_args);
327
/* This time, get the contents of the file, not its metadata */
328
args['return'] = "contents";
329
ajax_call(callback, service_app, path, args, "GET");
331
update_actions(isdir);
334
function handle_contents_response(path, response)
336
/* Treat this as an ordinary file. Get the file type. */
337
var content_type = response.getResponseHeader("Content-Type");
338
var handler_type = get_handler_type(content_type);
339
would_be_handler_type = handler_type;
340
/* handler_type should now be set to either
341
* "text", "image", "audio" or "binary". */
342
switch (handler_type)
345
handle_text(path, response.responseText,
346
would_be_handler_type);
349
/* TODO: Custom image handler */
350
handle_binary(path, response.responseText);
353
/* TODO: Custom audio handler */
354
handle_binary(path, response.responseText);
362
/* Called when a form upload comes back (from an iframe).
363
* Refreshes the page.
365
function upload_callback()
367
/* This has a pretty nasty hack, which happens to work.
368
* upload_callback is set as the "onload" callback for the iframe which
369
* receives the response from the server for uploading a file.
370
* This means it gets called twice. Once when initialising the iframe, and
371
* a second time when the actual response comes back.
372
* All we want to do is call navigate to refresh the page. But we CAN'T do
373
* that on the first load or it will just go into an infinite cycle of
374
* refreshing. We need to refresh the page ONLY on the second refresh.
375
* upload_callback_count is reset to 0 just before the iframe is created.
377
upload_callback_count++;
378
if (upload_callback_count >= 2)
380
document.getElementsByName('data')[0].value = '';
385
/** Deletes all "dynamic" content on the page.
386
* This returns the page back to the state it is in when the HTML arrives to
387
* the browser, ready for another handler to populate it.
391
dom_removechildren(document.getElementById("filesbody"));
394
/* Checks if a file needs to be saved. If it does, the user will be asked
395
* if they want to continue anyway. The caller must specify a warning
396
* sentence which indicates the consequences of continuing.
397
* Returns true if we should continue, and false if we should not.
399
function maybe_save(warning)
401
if (warning == null) warning = '';
402
if (current_file.isdir) return true;
403
if (document.getElementById("save_button").disabled) return true;
404
return confirm("This file has unsaved changes. " + warning +
405
"\nAre you sure you wish to continue?");
408
/** Deletes all "dynamic" content on the page necessary to navigate from
409
* one directory listing to another (does not clear as much as clearpage
411
* This is the equivalent of calling clearpage() then
412
* setup_for_dir_listing(), assuming the page is already on a dir listing.
414
function clearpage_dir()
416
dom_removechildren(document.getElementById("path"));
417
dom_removechildren(document.getElementById("files"));
418
dom_removechildren(document.getElementById("sidepanel"));
421
/*** HANDLERS for different types of responses (such as dir listing, file,
425
* message may either be a string, or a DOM node, which will be placed inside
428
function handle_error(message)
430
var files = document.getElementById("filesbody");
432
if (typeof(message) == "string")
434
txt_elem = dom_make_text_elem("div", "Error: "
435
+ message.toString() + ".")
439
/* Assume message is a DOM node */
440
txt_elem = document.createElement("div");
441
txt_elem.appendChild(message);
443
txt_elem.setAttribute("class", "padding error");
444
files.appendChild(txt_elem);
447
/** Given a path, filename and optional revision, returns a URL to open that
448
* revision of that file.
450
function build_revision_url(path, filename, revision)
452
bits = {'path': app_path(this_app, path, filename)};
453
if (current_revision)
455
bits['query_string'] = 'r=' + revision;
457
return build_url(bits);
460
/** Given a mime type, returns the path to the icon.
461
* \param type String, Mime type.
462
* \param sizelarge Boolean, optional.
463
* \return Path to the icon. Has applied make_path, so it is relative to site
466
function mime_type_to_icon(type, sizelarge)
469
if (type in type_icons)
470
filename = type_icons[type];
472
filename = default_type_icon;
474
return make_path(path_join(type_icons_path_large, filename));
476
return make_path(path_join(type_icons_path, filename));
479
/** Given an svnstatus, returns the path to the icon.
480
* \param type String, svn status.
481
* \return Path to the icon. Has applied make_path, so it is relative to site
482
* root. May return null to indicate no SVN icon.
484
function svnstatus_to_icon(svnstatus)
487
if (svnstatus in svn_icons)
488
filename = svn_icons[svnstatus];
490
filename = default_svn_icon;
491
if (filename == null) return null;
492
return make_path(path_join(svn_icons_path, filename));
495
/** Given an svnstatus, returns the "nice" string.
497
function svnstatus_to_string(svnstatus)
499
if (svnstatus in svn_nice)
500
return svn_nice[svnstatus];
502
return default_svn_nice;
505
/** Displays a download link to the binary file.
507
function handle_binary(path)
509
var files = document.getElementById("filesbody");
510
var div = document.createElement("div");
511
files.appendChild(div);
512
div.setAttribute("class", "padding");
513
var download_link = app_path(download_app, path);
514
var par1 = dom_make_text_elem("p",
515
"The file " + path + " is a binary file. To download this file, " +
516
"click the following link:");
517
var par2 = dom_make_link_elem("p",
518
"Download " + path, "Download " + path, download_link);
519
div.appendChild(par1);
520
div.appendChild(par2);
523
/* Enable or disable actions1 moreactions actions. Takes either a single
524
* name, or an array of them.*/
525
function set_action_state(names, which, allow_on_revision)
527
if (!(names instanceof Array)) names = Array(names);
529
for (var i=0; i < names.length; i++)
531
element = document.getElementById('act_' + names[i]);
533
!(current_file.svnstatus == 'revision' && !allow_on_revision))
536
element.setAttribute("class", "choice");
537
element.removeAttribute("disabled");
542
element.setAttribute("class", "disabled");
543
element.setAttribute("disabled", "disabled");
548
function update_actions()
551
var numsel = selected_files.length;
556
/* Display information about the current directory instead */
557
filename = path_basename(current_path);
560
else if (numsel == 1)
562
filename = selected_files[0];
563
file = file_listing[filename];
566
/* Update each action node in the topbar.
567
* This includes enabling/disabling actions as appropriate, and
568
* setting href/onclick attributes. */
572
/* Available if exactly one file is selected */
573
var open = document.getElementById("act_open");
576
open.setAttribute("class", "choice");
578
open.setAttribute("title",
579
"Navigate to this directory in the file browser");
581
open.setAttribute("title",
582
"Edit or view this file");
583
open.setAttribute("href", build_revision_url(current_path, filename,
588
open.setAttribute("class", "disabled");
589
open.removeAttribute("title");
590
open.removeAttribute("href");
594
/* Available if zero or one files are selected,
595
* and only if this is a file, not a directory */
596
var serve = document.getElementById("act_serve");
597
if (numsel <= 1 && !file.isdir && current_file.svnstatus != 'revision')
599
serve.setAttribute("class", "choice");
600
serve.setAttribute("onclick",
601
"return maybe_save('The last saved version will be served.')");
603
serve.setAttribute("href",
604
app_path(serve_app, current_path));
606
serve.setAttribute("href",
607
app_path(serve_app, current_path, filename));
611
serve.setAttribute("class", "disabled");
612
serve.removeAttribute("href");
613
serve.removeAttribute("onclick");
617
/* Available if exactly one file is selected,
618
* and it is a Python file.
620
var run = document.getElementById("act_run");
622
if (!file.isdir && file.type == "text/x-python" && numsel <= 1
623
&& current_file.svnstatus != 'revision')
627
// In the edit window
628
var localpath = path_join('/home', current_path);
632
// In the browser window
633
var localpath = path_join('/home', current_path, filename);
635
run.setAttribute("class", "choice");
636
run.setAttribute("onclick", "runfile('" + localpath + "')");
640
run.setAttribute("class", "disabled");
641
run.removeAttribute("onclick");
645
/* Always available for current files.
646
* If 0 files selected, download the current file or directory as a ZIP.
647
* If 1 directory selected, download it as a ZIP.
648
* If 1 non-directory selected, download it.
649
* If >1 files selected, download them all as a ZIP.
651
var download = document.getElementById("act_download");
652
if (current_file.svnstatus == 'revision')
654
download.setAttribute("class", "disabled");
655
download.removeAttribute("onclick");
657
else if (numsel <= 1)
659
download.setAttribute("class", "choice")
662
download.setAttribute("href",
663
app_path(download_app, current_path));
665
download.setAttribute("title",
666
"Download the current directory as a ZIP file");
668
download.setAttribute("title",
669
"Download the current file");
673
download.setAttribute("href",
674
app_path(download_app, current_path, filename));
676
download.setAttribute("title",
677
"Download the selected directory as a ZIP file");
679
download.setAttribute("title",
680
"Download the selected file");
685
/* Make a query string with all the files to download */
686
var dlpath = urlencode_path(app_path(download_app, current_path)) + "?";
687
for (var i=0; i<numsel; i++)
688
dlpath += "path=" + encodeURIComponent(selected_files[i]) + "&";
689
dlpath = dlpath.substr(0, dlpath.length-1);
690
download.setAttribute("class", "choice")
691
download.setAttribute("href", dlpath);
692
download.setAttribute("title",
693
"Download the selected files as a ZIP file");
696
/* Refresh - No changes required */
698
/* Publish and Submit */
699
/* If this directory is under subversion and selected/unselected file is a
701
var publish = document.getElementById("act_publish");
702
var submit = document.getElementById("act_submit");
703
var pubcond = numsel <= 1 && file.isdir;
706
/* TODO: Work out of file is svn'd */
707
/* If this dir is already published, call it "Unpublish" */
710
publish.setAttribute("value", "unpublish");
711
publish.setAttribute("title" ,"Make it so this directory "
712
+ "can not be seen by anyone on the web");
713
publish.textContent = "Unpublish";
715
publish.setAttribute("value", "publish");
716
publish.setAttribute("title","Make it so this directory "
717
+ "can be seen by anyone on the web");
718
publish.textContent = "Publish";
721
set_action_state(["publish", "submit"], pubcond);
724
/* If exactly 1 non-directory file is selected, and its parent
725
* directory is published.
727
set_action_state("share", numsel == 1 && !file.isdir &&
728
current_file.published);
731
/* If exactly 1 file is selected */
732
set_action_state("rename", numsel == 1);
734
/* Delete, cut, copy */
735
/* If >= 1 file is selected */
736
set_action_state(["delete", "cut", "copy"], numsel >= 1);
738
/* Paste, new file, new directory, upload */
739
/* Disable if the current file is not a directory */
740
set_action_state(["paste", "newfile", "mkdir", "upload"], current_file.isdir);
742
/* Subversion actions */
743
/* These are only useful if we are in a versioned directory and have some
745
set_action_state(["svnadd", "svnremove", "svnrevert", "svncommit"], numsel >= 1 && current_file.svnstatus);
747
/* Diff, log and update only support one path at the moment, so we must
748
* have 0 or 1 versioned files selected. If 0, the directory must be
750
single_versioned_path = (
752
(numsel == 1 && (svnst = file_listing[selected_files[0]].svnstatus)) ||
753
(numsel == 0 && (svnst = current_file.svnstatus))
754
) && svnst != "unversioned");
755
set_action_state(["svndiff", "svnupdate"], single_versioned_path);
757
/* We can resolve if we have a file selected and it is conflicted. */
758
set_action_state("svnresolved", single_versioned_path && numsel == 1 && svnst == "conflicted");
760
/* Log should be available for revisions as well. */
761
set_action_state("svnlog", single_versioned_path, true);
763
/* There is currently nothing on the More Actions menu of use
764
* when the current file is not a directory. Hence, just remove
766
* (This makes some of the above decisions somewhat redundant).
767
* We also take this opportunity to show the appropriate actions2
768
* bar for this path. It should either be a save or upload widget.
770
if (current_file.isdir)
772
var actions2_directory = document.getElementById("actions2_directory");
773
actions2_directory.setAttribute("style", "display: inline;");
774
var moreactions = document.getElementById("moreactions_area");
775
moreactions.setAttribute("style", "display: inline;");
779
var actions2_file = document.getElementById("actions2_file");
780
actions2_file.setAttribute("style", "display: inline;");
786
/** Event handler for when an item of the "More actions..." dropdown box is
787
* selected. Performs the selected action. */
788
function handle_moreactions()
790
var moreactions = document.getElementById("moreactions");
791
if (moreactions.value == "top")
793
var selectedaction = moreactions.value;
794
/* Reset to "More actions..." */
795
moreactions.selectedIndex = 0;
797
/* If 0 files selected, filename is the name of the current dir.
798
* If 1 file selected, filename is that file.
800
if (selected_files.length == 0)
801
filename = path_basename(current_path);
802
else if (selected_files.length == 1)
803
filename = selected_files[0];
807
/* Now handle the selected action */
808
switch(selectedaction)
811
action_publish(selected_files);
814
action_unpublish(selected_files);
817
//alert("Not yet implemented: Sharing files");
818
window.open(public_app_path(serve_app, current_path, filename), 'share')
822
alert("Not yet implemented: Submit");
825
action_rename(filename);
828
action_delete(selected_files);
831
action_copy(selected_files);
834
action_cut(selected_files);
846
show_uploadpanel(true);
849
action_add(selected_files);
852
action_remove(selected_files);
855
action_revert(selected_files);
858
window.location = path_join(app_path('diff'), current_path, selected_files[0] || '');
861
action_update(selected_files);
864
action_resolved(selected_files);
867
action_commit(selected_files);
870
window.location = path_join(app_path('svnlog'), current_path, selected_files[0] || '');
875
/** User clicks "Run" button.
876
* Do an Ajax call and print the test output.
878
function runfile(localpath)
880
if (!maybe_save('The last saved version will be run.')) return false;
882
/* Dump the entire file to the console */
883
var callback = function()
885
console_enter_line("execfile('" + localpath + "')", "block");
887
start_server(callback)
23
891
/** Called when the page loads initially.
25
window.onload = function()
893
function browser_init()
895
/* Navigate (internally) to the path in the URL bar.
896
* This causes the page to be populated with whatever is at that address,
897
* whether it be a directory or a file.
899
var path = parse_url(window.location.href).path;
900
/* Strip out root_dir + "/files" from the front of the path */
901
var strip = make_path(this_app);
902
if (path.substr(0, strip.length) == strip)
903
path = path.substr(strip.length+1);
906
/* See if this is an edit path */
907
strip = make_path(edit_app);
908
if (path.substr(0, strip.length) == strip)
910
path = path.substr(strip.length+1);
914
if (path.length == 0)
916
/* Navigate to the user's home directory by default */
added
removed
www/media/browser/browser.js
