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;
88
server_key = JSON.parse(json_text).key;
89
server_started = true;
95
callback1, "console", "service",
96
{"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;
100
53
/** Initialises the console. All apps which import console are required to
238
198
var hist = new History();
240
function set_interrupt()
245
function clear_output()
247
var output = document.getElementById("console_output");
248
while (output.firstChild)
250
output.removeChild(output.firstChild);
254
200
/** Send a line of text to the Python server, wait for its return, and react
255
201
* to its response by writing to the output box.
256
202
* Also maximize the console window if not already.
258
function console_enter_line(inputbox, which)
262
if (typeof(inputbox) == "string")
264
var inputline = inputbox + "\n";
269
/* Disable the text box */
270
inputbox.setAttribute("disabled", "disabled");
272
var inputline = inputbox.value + "\n";
274
var output = document.getElementById("console_output");
277
var span = document.createElement("span");
278
span.setAttribute("class", "inputPrompt");
279
span.appendChild(document.createTextNode(
280
document.getElementById("console_prompt").firstChild.nodeValue)
282
output.appendChild(span);
283
// Print input line itself in a span
284
var span = document.createElement("span");
285
span.setAttribute("class", "inputMsg");
286
span.appendChild(document.createTextNode(inputline));
287
output.appendChild(span);
290
"ivle.op": "chat", "kind": which, "key": server_key,
291
"text": inputline, "cwd": get_console_start_directory()
293
var callback = function(xhr)
295
console_response(inputbox, inputline, xhr.responseText);
297
ajax_call(callback, "console", "service", args, "POST");
300
function console_response(inputbox, inputline, responseText)
304
var res = JSON.parse(responseText);
308
alert("An internal error occurred in the python console.");
311
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);
312
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])
317
output.appendChild(document.createTextNode(res.okay + "\n"));
318
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);
320
235
// set the prompt to >>>
236
var prompt = document.getElementById("console_prompt");
237
prompt.replaceChild(document.createTextNode(">>> "), prompt.firstChild);
323
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);
326
251
// print out the error message (res.exc)
327
print_error(res.exc);
329
// set the prompt to >>>
332
else if (res.hasOwnProperty('restart') && res.hasOwnProperty('key'))
334
// Server has indicated that the console should be restarted
336
// Get the new key (host, port, magic)
337
server_key = res.key;
339
// Print a reason to explain why we'd do such a horrible thing
340
// (console timeout, server error etc.)
341
print_error("Console Restart: " + res.restart);
343
// 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);
346
257
else if (res.hasOwnProperty('more'))
348
259
// Need more input, so set the prompt to ...
351
else if (res.hasOwnProperty('output'))
353
if (res.output.length > 0)
355
output.appendChild(document.createTextNode(res.output));
357
var callback = function(xhr)
359
console_response(inputbox, null, xhr.responseText);
363
var kind = "interrupt";
370
"ivle.op": "chat", "kind": kind, "key": server_key,
371
"text": '', "cwd": get_console_start_directory()
373
ajax_call(callback, "console", "service", args, "POST");
375
// Open up the console so we can see the output
376
// FIXME: do we need to maximize here?
380
divScroll.activeScroll();
382
// 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);
387
264
// assert res.hasOwnProperty('input')
391
if (inputbox != null)
393
/* Re-enable the text box */
394
inputbox.removeAttribute("disabled");
265
var prompt = document.getElementById("console_prompt");
266
prompt.replaceChild(document.createTextNode("+++ "), prompt.firstChild);
398
268
/* Open up the console so we can see the output */
399
269
console_maximize();
401
divScroll.activeScroll();
403
// Focus the input box by default
404
document.getElementById("console_output").focus();
405
document.getElementById("console_inputText").focus();
408
272
function catch_input(key)
442
306
case 13: /* Enter key */
443
var callback = function()
445
/* Send the line of text to the server */
446
console_enter_line(inp, "chat");
447
hist.submit(inp.value);
448
inp.value = hist.curr();
451
/* Disable the text box. This will be redone by
452
* console_enter_line, but we do it here too in case start_server
455
inp.setAttribute("disabled", "disabled");
456
/* Start the server if it hasn't already been started */
457
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();
459
312
case 38: /* Up arrow */
460
313
hist.up(inp.value);
461
314
inp.value = hist.curr();
462
/* Inhibit further responses to this event, or WebKit moves the
463
* cursor to the start. */
466
316
case 40: /* Down arrow */
467
317
hist.down(inp.value);
468
318
inp.value = hist.curr();
474
/** Resets the console by signalling the old console to expire and starting a
477
function console_reset()
479
// FIXME: We show some feedback here - either disable input or at very
480
// least the reset button.
482
// Restart the console
489
xhr = ajax_call(null, "console", "service", {"ivle.op": "chat", "kind": "terminate", "key": server_key, "cwd": get_console_start_directory()}, "POST");
490
console_response(null, null, xhr.responseText);
494
/** Prints an error line in the console **/
495
function print_error(error)
497
var output = document.getElementById("console_output");
500
var span = document.createElement("span");
501
span.setAttribute("class", "errorMsg");
502
span.appendChild(document.createTextNode(error + "\n"));
503
output.appendChild(span);
506
divScroll.activeScroll();
509
/** Sets the prompt text **/
510
function set_prompt(prompt_text)
512
var prompt = document.getElementById("console_prompt");
513
prompt.replaceChild(document.createTextNode(prompt_text + " "), prompt.firstChild);
516
/**** Following Code modified from ******************************************/
517
/**** http://radio.javaranch.com/pascarello/2006/08/17/1155837038219.html ***/
518
/****************************************************************************/
519
var chatscroll = new Object();
521
chatscroll.Pane = function(scrollContainerId)
523
this.scrollContainerId = scrollContainerId;
526
chatscroll.Pane.prototype.activeScroll = function()
528
var scrollDiv = document.getElementById(this.scrollContainerId);
529
var currentHeight = 0;
531
if (scrollDiv.scrollHeight > 0)
532
currentHeight = scrollDiv.scrollHeight;
533
else if (scrollDiv.offsetHeight > 0)
534
currentHeight = scrollDiv.offsetHeight;
536
scrollDiv.scrollTop = currentHeight;
541
var divScroll = new chatscroll.Pane('console_output');