34
34
windowpane_mode = false;
35
35
server_started = false;
37
39
/* Starts the console server, if it isn't already.
38
40
* This can be called any number of times - it only starts the one server.
41
* Note that this is asynchronous. It will return after signalling to start
42
* the server, but there is no guarantee that it has been started yet.
39
43
* This is a separate step from console_init, as the server is only to be
40
44
* started once the first command is entered.
41
45
* Does not return a value. Writes to global variables
42
46
* server_host, and server_port.
48
* \param callback Function which will be called after the server has been
49
* started. No parameters are passed. May be null.
44
function start_server()
51
function start_server(callback)
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;
58
var callback1 = function(xhr)
60
var json_text = xhr.responseText;
61
server_key = JSON.parse(json_text).key;
62
server_started = true;
68
if((typeof(current_path) != 'undefined') && current_file)
70
// We have a current_path - give a suggestion to the server
72
if (current_file.isdir)
75
path = path_join("/home", current_path);
79
// Editor - need to chop off filename
80
var tmp_path = current_path.split('/');
82
path = path_join("/home", tmp_path.join('/'));
84
ajax_call(callback1, "console", "service", {"ivle.op": "start", "cwd": path}, "POST");
88
// No current_path - let the server decide
89
ajax_call(callback1, "console", "service", {"ivle.op": "start"}, "POST");
53
93
/** Initialises the console. All apps which import console are required to
198
231
var hist = new History();
233
function set_interrupt()
238
function clear_output()
240
var output = document.getElementById("console_output");
241
while (output.firstChild)
243
output.removeChild(output.firstChild);
200
247
/** Send a line of text to the Python server, wait for its return, and react
201
248
* to its response by writing to the output box.
202
249
* Also maximize the console window if not already.
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);
251
function console_enter_line(inputbox, which)
255
if (typeof(inputbox) == "string")
257
var inputline = inputbox + "\n";
262
/* Disable the text box */
263
inputbox.setAttribute("disabled", "disabled");
265
var inputline = inputbox.value + "\n";
267
var output = document.getElementById("console_output");
270
var span = document.createElement("span");
271
span.setAttribute("class", "inputPrompt");
272
span.appendChild(document.createTextNode(
273
document.getElementById("console_prompt").firstChild.nodeValue)
275
output.appendChild(span);
276
// Print input line itself in a span
277
var span = document.createElement("span");
278
span.setAttribute("class", "inputMsg");
279
span.appendChild(document.createTextNode(inputline));
280
output.appendChild(span);
282
var args = {"ivle.op": "chat", "kind": which, "key": server_key, "text":inputline};
283
var callback = function(xhr)
285
console_response(inputbox, inputline, xhr.responseText);
287
ajax_call(callback, "console", "service", args, "POST");
290
function console_response(inputbox, inputline, responseText)
294
var res = JSON.parse(responseText);
298
alert("An internal error occurred in the python console.");
301
var output = document.getElementById("console_output");
219
302
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])
230
var pre = document.createElement("pre");
231
pre.setAttribute("class", "outputMsg");
232
pre.appendChild(document.createTextNode(res.okay[1] + "\n"));
233
output.appendChild(pre);
307
output.appendChild(document.createTextNode(res.okay + "\n"));
308
output.appendChild(span);
235
310
// set the prompt to >>>
236
var prompt = document.getElementById("console_prompt");
237
prompt.replaceChild(document.createTextNode(">>> "), prompt.firstChild);
239
313
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);
251
316
// print out the error message (res.exc)
252
var pre = document.createElement("pre");
253
pre.setAttribute("class", "errorMsg");
254
pre.appendChild(document.createTextNode(res.exc[1]));
255
output.appendChild(pre);
317
print_error(res.exc);
319
// set the prompt to >>>
322
else if (res.hasOwnProperty('restart') && res.hasOwnProperty('key'))
324
// Server has indicated that the console should be restarted
326
// Get the new key (host, port, magic)
327
server_key = res.key;
329
// Print a reason to explain why we'd do such a horrible thing
330
// (console timeout, server error etc.)
331
print_error("Console Restart: " + res.restart);
333
// set the prompt to >>>
257
336
else if (res.hasOwnProperty('more'))
259
338
// Need more input, so set the prompt to ...
260
var prompt = document.getElementById("console_prompt");
261
prompt.replaceChild(document.createTextNode("... "), prompt.firstChild);
341
else if (res.hasOwnProperty('output'))
343
if (res.output.length > 0)
345
output.appendChild(document.createTextNode(res.output));
347
var callback = function(xhr)
349
console_response(inputbox, null, xhr.responseText);
353
var kind = "interrupt";
359
var args = {"ivle.op": "chat", "kind": kind, "key": server_key, "text":''};
360
ajax_call(callback, "console", "service", args, "POST");
362
// Open up the console so we can see the output
363
// FIXME: do we need to maximize here?
367
divScroll.activeScroll();
369
// Return early, so we don't re-enable the input box.
264
374
// assert res.hasOwnProperty('input')
265
var prompt = document.getElementById("console_prompt");
266
prompt.replaceChild(document.createTextNode("+++ "), prompt.firstChild);
378
if (inputbox != null)
380
/* Re-enable the text box */
381
inputbox.removeAttribute("disabled");
268
385
/* Open up the console so we can see the output */
269
386
console_maximize();
388
divScroll.activeScroll();
390
// Focus the input box by default
391
document.getElementById("console_output").focus();
392
document.getElementById("console_inputText").focus();
272
395
function catch_input(key)
451
/** Resets the console by signalling the old console to expire and starting a
454
function console_reset()
456
// FIXME: We show some feedback here - either disable input or at very
457
// least the reset button.
459
// Restart the console
466
xhr = ajax_call(null, "console", "service", {"ivle.op": "chat", "kind": "terminate", "key": server_key}, "POST");
467
console_response(null, null, xhr.responseText);
471
/** Prints an error line in the console **/
472
function print_error(error)
474
var output = document.getElementById("console_output");
477
var span = document.createElement("span");
478
span.setAttribute("class", "errorMsg");
479
span.appendChild(document.createTextNode(error + "\n"));
480
output.appendChild(span);
483
divScroll.activeScroll();
486
/** Sets the prompt text **/
487
function set_prompt(prompt_text)
489
var prompt = document.getElementById("console_prompt");
490
prompt.replaceChild(document.createTextNode(prompt_text + " "), prompt.firstChild);
493
/**** Following Code modified from ******************************************/
494
/**** http://radio.javaranch.com/pascarello/2006/08/17/1155837038219.html ***/
495
/****************************************************************************/
496
var chatscroll = new Object();
498
chatscroll.Pane = function(scrollContainerId)
500
this.scrollContainerId = scrollContainerId;
503
chatscroll.Pane.prototype.activeScroll = function()
505
var scrollDiv = document.getElementById(this.scrollContainerId);
506
var currentHeight = 0;
508
if (scrollDiv.scrollHeight > 0)
509
currentHeight = scrollDiv.scrollHeight;
510
else if (scrollDiv.offsetHeight > 0)
511
currentHeight = scrollDiv.offsetHeight;
513
scrollDiv.scrollTop = currentHeight;
518
var divScroll = new chatscroll.Pane('console_output');