34
34
windowpane_mode = false;
35
35
server_started = false;
40
function get_console_start_directory()
42
if((typeof(current_path) != 'undefined') && current_file)
44
// We have a current_path - give a suggestion to the server
46
if (current_file.isdir)
49
return path_join("/home", current_path);
53
// Editor - need to chop off filename
54
var tmp_path = current_path.split('/');
56
return path_join("/home", tmp_path.join('/'));
61
// No current_path - let the server decide
66
37
/* Starts the console server, if it isn't already.
67
38
* This can be called any number of times - it only starts the one server.
68
* Note that this is asynchronous. It will return after signalling to start
69
* the server, but there is no guarantee that it has been started yet.
70
39
* This is a separate step from console_init, as the server is only to be
71
40
* started once the first command is entered.
72
41
* Does not return a value. Writes to global variables
73
42
* server_host, and server_port.
75
* \param callback Function which will be called after the server has been
76
* started. No parameters are passed. May be null.
78
function start_server(callback)
44
function start_server()
85
var callback1 = function(xhr)
87
var json_text = xhr.responseText;
90
server_key = JSON.parse(json_text).key;
91
server_started = true;
97
alert("An error occured when starting the IVLE console. " +
98
"Please refresh the page and try again.\n" +
99
"Details have been logged for further examination.")
104
callback1, "console", "service",
105
{"ivle.op": "start", "cwd": get_console_start_directory()},
46
if (server_started) return;
47
var xhr = ajax_call("consoleservice", "start", {}, "POST");
48
var json_text = xhr.responseText;
49
server_key = JSON.parse(json_text);
50
server_started = true;
109
53
/** Initialises the console. All apps which import console are required to
247
198
var hist = new History();
249
function set_interrupt()
254
function clear_output()
256
var output = document.getElementById("console_output");
257
while (output.firstChild)
259
output.removeChild(output.firstChild);
263
200
/** Send a line of text to the Python server, wait for its return, and react
264
201
* to its response by writing to the output box.
265
202
* Also maximize the console window if not already.
267
function console_enter_line(inputbox, which)
271
if (typeof(inputbox) == "string")
273
var inputline = inputbox + "\n";
278
/* Disable the text box */
279
inputbox.setAttribute("disabled", "disabled");
281
var inputline = inputbox.value + "\n";
283
var output = document.getElementById("console_output");
286
var span = document.createElement("span");
287
span.setAttribute("class", "inputPrompt");
288
span.appendChild(document.createTextNode(
289
document.getElementById("console_prompt").firstChild.nodeValue)
291
output.appendChild(span);
292
// Print input line itself in a span
293
var span = document.createElement("span");
294
span.setAttribute("class", "inputMsg");
295
span.appendChild(document.createTextNode(inputline));
296
output.appendChild(span);
299
"ivle.op": "chat", "kind": which, "key": server_key,
300
"text": inputline, "cwd": get_console_start_directory()
302
var callback = function(xhr)
304
console_response(inputbox, inputline, xhr.responseText);
306
ajax_call(callback, "console", "service", args, "POST");
309
function console_response(inputbox, inputline, responseText)
313
var res = JSON.parse(responseText);
317
alert("An internal error occurred in the python console.");
320
var output = document.getElementById("console_output");
204
function console_enter_line(inputline, which)
206
/* Start the server if it hasn't already been started */
208
var args = {"key": server_key, "text":inputline};
209
var xmlhttp = ajax_call("consoleservice", which, args, "POST");
211
var res = JSON.parse(xmlhttp.responseText);
212
var output = document.getElementById("console_output");
214
var pre = document.createElement("pre");
215
pre.setAttribute("class", "inputMsg");
216
pre.appendChild(document.createTextNode(inputline + "\n"));
217
output.appendChild(pre);
321
219
if (res.hasOwnProperty('okay'))
222
// print out the output (res.okay[0])
223
var pre = document.createElement("pre");
224
pre.setAttribute("class", "outputMsg");
225
pre.appendChild(document.createTextNode(res.okay[0]));
226
output.appendChild(pre);
227
// print out the return value (res.okay[1])
326
output.appendChild(document.createTextNode(res.okay + "\n"));
327
output.appendChild(span);
230
var pre = document.createElement("pre");
231
pre.setAttribute("class", "outputMsg");
232
pre.appendChild(document.createTextNode(res.okay[1] + "\n"));
233
output.appendChild(pre);
329
235
// set the prompt to >>>
236
var prompt = document.getElementById("console_prompt");
237
prompt.replaceChild(document.createTextNode(">>> "), prompt.firstChild);
332
239
else if (res.hasOwnProperty('exc'))
242
// print out any output that came before the error
243
if (res.exc[0].length > 0)
245
var pre = document.createElement("pre");
246
pre.setAttribute("class", "outputMsg");
247
pre.appendChild(document.createTextNode(res.exc[0]));
248
output.appendChild(pre);
335
251
// print out the error message (res.exc)
336
print_error(res.exc);
338
// set the prompt to >>>
341
else if (res.hasOwnProperty('restart') && res.hasOwnProperty('key'))
343
// Server has indicated that the console should be restarted
345
// Get the new key (host, port, magic)
346
server_key = res.key;
348
// Print a reason to explain why we'd do such a horrible thing
349
// (console timeout, server error etc.)
350
print_error("Console Restart: " + res.restart);
352
// set the prompt to >>>
252
var pre = document.createElement("pre");
253
pre.setAttribute("class", "errorMsg");
254
pre.appendChild(document.createTextNode(res.exc[1]));
255
output.appendChild(pre);
355
257
else if (res.hasOwnProperty('more'))
357
259
// Need more input, so set the prompt to ...
360
else if (res.hasOwnProperty('output'))
362
if (res.output.length > 0)
364
output.appendChild(document.createTextNode(res.output));
366
var callback = function(xhr)
368
console_response(inputbox, null, xhr.responseText);
372
var kind = "interrupt";
379
"ivle.op": "chat", "kind": kind, "key": server_key,
380
"text": '', "cwd": get_console_start_directory()
382
ajax_call(callback, "console", "service", args, "POST");
384
// Open up the console so we can see the output
385
// FIXME: do we need to maximize here?
389
divScroll.activeScroll();
391
// Return early, so we don't re-enable the input box.
260
var prompt = document.getElementById("console_prompt");
261
prompt.replaceChild(document.createTextNode("... "), prompt.firstChild);
396
264
// assert res.hasOwnProperty('input')
400
if (inputbox != null)
402
/* Re-enable the text box */
403
inputbox.removeAttribute("disabled");
265
var prompt = document.getElementById("console_prompt");
266
prompt.replaceChild(document.createTextNode("+++ "), prompt.firstChild);
407
268
/* Open up the console so we can see the output */
408
269
console_maximize();
410
divScroll.activeScroll();
412
// Focus the input box by default
413
document.getElementById("console_output").focus();
414
document.getElementById("console_inputText").focus();
417
272
function catch_input(key)
451
306
case 13: /* Enter key */
452
var callback = function()
454
/* Send the line of text to the server */
455
console_enter_line(inp, "chat");
456
hist.submit(inp.value);
457
inp.value = hist.curr();
460
/* Disable the text box. This will be redone by
461
* console_enter_line, but we do it here too in case start_server
464
inp.setAttribute("disabled", "disabled");
465
/* Start the server if it hasn't already been started */
466
start_server(callback);
307
/* Send the line of text to the server */
308
console_enter_line(inp.value, "chat");
309
hist.submit(inp.value);
310
inp.value = hist.curr();
468
312
case 38: /* Up arrow */
469
313
hist.up(inp.value);
470
314
inp.value = hist.curr();
471
/* Inhibit further responses to this event, or WebKit moves the
472
* cursor to the start. */
475
316
case 40: /* Down arrow */
476
317
hist.down(inp.value);
477
318
inp.value = hist.curr();
483
/** Resets the console by signalling the old console to expire and starting a
486
function console_reset()
488
// FIXME: We show some feedback here - either disable input or at very
489
// least the reset button.
491
// Restart the console
498
xhr = ajax_call(null, "console", "service", {"ivle.op": "chat", "kind": "terminate", "key": server_key, "cwd": get_console_start_directory()}, "POST");
499
console_response(null, null, xhr.responseText);
503
/** Prints an error line in the console **/
504
function print_error(error)
506
var output = document.getElementById("console_output");
509
var span = document.createElement("span");
510
span.setAttribute("class", "errorMsg");
511
span.appendChild(document.createTextNode(error + "\n"));
512
output.appendChild(span);
515
divScroll.activeScroll();
518
/** Sets the prompt text **/
519
function set_prompt(prompt_text)
521
var prompt = document.getElementById("console_prompt");
522
prompt.replaceChild(document.createTextNode(prompt_text + " "), prompt.firstChild);
525
/**** Following Code modified from ******************************************/
526
/**** http://radio.javaranch.com/pascarello/2006/08/17/1155837038219.html ***/
527
/****************************************************************************/
528
var chatscroll = new Object();
530
chatscroll.Pane = function(scrollContainerId)
532
this.scrollContainerId = scrollContainerId;
535
chatscroll.Pane.prototype.activeScroll = function()
537
var scrollDiv = document.getElementById(this.scrollContainerId);
538
var currentHeight = 0;
540
if (scrollDiv.scrollHeight > 0)
541
currentHeight = scrollDiv.scrollHeight;
542
else if (scrollDiv.offsetHeight > 0)
543
currentHeight = scrollDiv.offsetHeight;
545
scrollDiv.scrollTop = currentHeight;
550
var divScroll = new chatscroll.Pane('console_output');