34
38
windowpane_mode = false;
35
39
server_started = false;
39
41
/* Starts the console server, if it isn't already.
40
42
* 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.
43
43
* This is a separate step from console_init, as the server is only to be
44
44
* started once the first command is entered.
45
45
* Does not return a value. Writes to global variables
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.
46
* server_host, server_port, server_magic.
51
function start_server(callback)
48
function start_server()
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, "consoleservice", "start", {"startdir": path}, "POST");
88
// No current_path - let the server decide
89
ajax_call(callback1, "consoleservice", "start", {}, "POST");
50
if (server_started) return;
51
var xhr = ajax_call("consoleservice", "start", {}, "POST");
52
var json_text = xhr.responseText;
53
var server_info = JSON.parse(json_text);
54
server_host = server_info.host;
55
server_port = server_info.port;
56
server_magic = server_info.magic;
57
server_started = true;
93
60
/** Initialises the console. All apps which import console are required to
204
* This is a fairly complex mechanism due to complications when editing
205
* history items. We store two arrays. "items" is the permanent history of
206
* each item. "edited" is a "volatile" version of items - the edits made to
207
* the history between now and last time you hit "enter".
208
* This is because the user can go back and edit any of the previous items,
209
* and the edits are remembered until they hit enter.
211
* When hitting enter, the "edited" version of the currently selected item
212
* replaces the "item" version of the last item in the list.
213
* Then a new blank item is created, for the new line of input.
214
* Lastly, all the "edited" versions are replaced with their stable versions.
216
* Cursor never points to an invalid location.
218
166
function History()
220
this.items = new Array("");
221
this.edited = new Array("");
223
this.earliestCursor = 0;
168
this.items = new Array();
224
170
this.up = historyUp;
225
171
this.down = historyDown;
226
172
this.curr = historyCurr;
227
this.submit = historySubmit;
173
this.add = historyAdd;
228
174
this.show = historyShow;
231
177
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);
247
179
/** Send a line of text to the Python server, wait for its return, and react
248
180
* to its response by writing to the output box.
249
181
* Also maximize the console window if not already.
251
function console_enter_line(inputbox, which)
255
if (typeof(inputbox) == "string")
257
var inputline = inputbox;
259
var graytimer = null;
263
GLOBAL_inputbox = inputbox; /* For timer */
264
var inputline = inputbox.value + "\n";
265
var graytimer = setTimeout("GLOBAL_inputbox.setAttribute(\"class\", "
266
+ "\"disabled\");", 100);
268
var output = document.getElementById("console_output");
271
var span = document.createElement("span");
272
span.setAttribute("class", "inputPrompt");
273
span.appendChild(document.createTextNode(
274
document.getElementById("console_prompt").firstChild.textContent)
276
output.appendChild(span);
277
// Print input line itself in a span
278
var span = document.createElement("span");
279
span.setAttribute("class", "inputMsg");
280
span.appendChild(document.createTextNode(inputline));
281
output.appendChild(span);
283
var args = {"key": server_key, "text":inputline};
284
var callback = function(xhr)
286
console_response(inputbox, graytimer, inputline, xhr.responseText);
288
/* Disable the text box */
289
if (inputbox != null)
290
inputbox.setAttribute("disabled", "disabled");
291
ajax_call(callback, "consoleservice", which, args, "POST");
294
function console_response(inputbox, graytimer, inputline, responseText)
298
var res = JSON.parse(responseText);
302
alert("An internal error occurred in the python console.");
305
var output = document.getElementById("console_output");
183
function console_enter_line(inputline)
185
/* Start the server if it hasn't already been started */
187
var digest = hex_md5(inputline + magic);
188
var args = {"host": server_host, "port": server_port,
189
"digest":digest, "text":inputline};
190
var xmlhttp = ajax_call("consoleservice", "chat", args, "POST");
192
var res = JSON.parse(xmlhttp.responseText);
193
var output = document.getElementById("console_output");
195
var pre = document.createElement("pre");
196
pre.setAttribute("class", "inputMsg");
197
pre.appendChild(document.createTextNode(inputline + "\n"));
198
output.appendChild(pre);
306
200
if (res.hasOwnProperty('okay'))
203
// print out the output (res.okay[0])
204
var pre = document.createElement("pre");
205
pre.setAttribute("class", "outputMsg");
206
pre.appendChild(document.createTextNode(res.okay[0]));
207
output.appendChild(pre);
208
// print out the return value (res.okay[1])
311
output.appendChild(document.createTextNode(res.okay + "\n"));
312
output.appendChild(span);
211
var pre = document.createElement("pre");
212
pre.setAttribute("class", "outputMsg");
213
pre.appendChild(document.createTextNode(res.okay[1] + "\n"));
214
output.appendChild(pre);
314
216
// set the prompt to >>>
217
var prompt = document.getElementById("console_prompt");
218
prompt.replaceChild(document.createTextNode(">>> "), prompt.firstChild);
317
220
else if (res.hasOwnProperty('exc'))
223
// print out any output that came before the error
224
if (res.exc[0].length > 0)
226
var pre = document.createElement("pre");
227
pre.setAttribute("class", "outputMsg");
228
pre.appendChild(document.createTextNode(res.exc[0]));
229
output.appendChild(pre);
320
232
// print out the error message (res.exc)
321
print_error(res.exc);
323
// set the prompt to >>>
326
else if (res.hasOwnProperty('restart') && res.hasOwnProperty('key'))
328
// Server has indicated that the console should be restarted
330
// Get the new key (host, port, magic)
331
server_key = res.key;
333
// Print a reason to explain why we'd do such a horrible thing
334
// (console timeout, server error etc.)
335
print_error("Console Restart: " + res.restart);
337
// set the prompt to >>>
233
var pre = document.createElement("pre");
234
pre.setAttribute("class", "errorMsg");
235
pre.appendChild(document.createTextNode(res.exc[1]));
236
output.appendChild(pre);
340
238
else if (res.hasOwnProperty('more'))
342
240
// Need more input, so set the prompt to ...
345
else if (res.hasOwnProperty('output'))
347
if (res.output.length > 0)
349
output.appendChild(document.createTextNode(res.output));
351
var callback = function(xhr)
353
console_response(inputbox, graytimer,
354
null, xhr.responseText);
358
var kind = "interrupt";
364
var args = {"key": server_key, "text":''};
365
ajax_call(callback, "consoleservice", kind, args, "POST");
367
// Open up the console so we can see the output
368
// FIXME: do we need to maximize here?
372
divScroll.activeScroll();
374
// Return early, so we don't re-enable the input box.
241
var prompt = document.getElementById("console_prompt");
242
prompt.replaceChild(document.createTextNode("... "), prompt.firstChild);
379
245
// assert res.hasOwnProperty('input')
383
if (inputbox != null)
385
/* Re-enable the text box */
386
clearTimeout(graytimer);
387
inputbox.removeAttribute("disabled");
388
inputbox.removeAttribute("class");
246
var prompt = document.getElementById("console_prompt");
247
prompt.replaceChild(document.createTextNode("+++ "), prompt.firstChild);
392
249
/* Open up the console so we can see the output */
393
250
console_maximize();
395
divScroll.activeScroll();
397
// Focus the input box by default
398
document.getElementById("console_output").focus();
399
document.getElementById("console_inputText").focus();
402
253
function catch_input(key)
436
287
case 13: /* Enter key */
437
var callback = function()
439
/* Send the line of text to the server */
440
console_enter_line(inp, "chat");
441
hist.submit(inp.value);
442
inp.value = hist.curr();
444
/* Start the server if it hasn't already been started */
445
start_server(callback);
288
/* Send the line of text to the server */
289
console_enter_line(inp.value);
291
inp.value = hist.curr();
447
293
case 38: /* Up arrow */
449
295
inp.value = hist.curr();
451
297
case 40: /* Down arrow */
452
hist.down(inp.value);
453
299
inp.value = hist.curr();
458
/** Resets the console by signalling the old console to expire and starting a
461
function console_reset()
463
// FIXME: We show some feedback here - either disable input or at very
464
// least the reset button.
466
// Restart the console
473
xhr = ajax_call(null, "consoleservice", "restart", {"key": server_key}, "POST");
474
console_response(null, null, null, xhr.responseText);
478
/** Prints an error line in the console **/
479
function print_error(error)
481
var output = document.getElementById("console_output");
484
var span = document.createElement("span");
485
span.setAttribute("class", "errorMsg");
486
span.appendChild(document.createTextNode(error + "\n"));
487
output.appendChild(span);
490
divScroll.activeScroll();
493
/** Sets the prompt text **/
494
function set_prompt(prompt_text)
496
var prompt = document.getElementById("console_prompt");
497
prompt.replaceChild(document.createTextNode(prompt_text + " "), prompt.firstChild);
500
/**** Following Code modified from ******************************************/
501
/**** http://radio.javaranch.com/pascarello/2006/08/17/1155837038219.html ***/
502
/****************************************************************************/
503
var chatscroll = new Object();
505
chatscroll.Pane = function(scrollContainerId)
507
this.scrollContainerId = scrollContainerId;
510
chatscroll.Pane.prototype.activeScroll = function()
512
var scrollDiv = document.getElementById(this.scrollContainerId);
513
var currentHeight = 0;
515
if (scrollDiv.scrollHeight > 0)
516
currentHeight = scrollDiv.scrollHeight;
517
else if (scrollDiv.offsetHeight > 0)
518
currentHeight = scrollDiv.offsetHeight;
520
scrollDiv.scrollTop = currentHeight;
525
var divScroll = new chatscroll.Pane('console_output');