34
34
windowpane_mode = false;
35
35
server_started = false;
37
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/* Starts the console server, if it isn't already.
38
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* 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.
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* This is a separate step from console_init, as the server is only to be
40
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* started once the first command is entered.
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* Does not return a value. Writes to global variables
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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);
62
server_started = true;
66
ajax_call(callback1, "consoleservice", "start", {}, "POST");
53
69
/** Initialises the console. All apps which import console are required to
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var hist = new History();
209
function set_interrupt()
214
function clear_output()
216
var output = document.getElementById("console_output");
217
while (output.firstChild)
219
output.removeChild(output.firstChild);
200
223
/** Send a line of text to the Python server, wait for its return, and react
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224
* to its response by writing to the output box.
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225
* Also maximize the console window if not already.
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function console_enter_line(inputline, which)
227
function console_enter_line(inputbox, which)
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/* Start the server if it hasn't already been started */
231
if (typeof(inputbox) == "string")
233
var inputline = inputbox;
235
var graytimer = null;
239
GLOBAL_inputbox = inputbox; /* For timer */
240
var inputline = inputbox.value;
241
var graytimer = setTimeout("GLOBAL_inputbox.setAttribute(\"class\", "
242
+ "\"disabled\");", 100);
244
var output = document.getElementById("console_output");
247
var span = document.createElement("span");
248
span.setAttribute("class", "inputPrompt");
249
span.appendChild(document.createTextNode(">>> "));
250
output.appendChild(span);
251
// Print input line itself in a span
252
var span = document.createElement("span");
253
span.setAttribute("class", "inputMsg");
254
span.appendChild(document.createTextNode(inputline + "\n"));
255
output.appendChild(span);
208
257
var args = {"key": server_key, "text":inputline};
209
var xmlhttp = ajax_call("consoleservice", which, args, "POST");
258
var callback = function(xhr)
260
console_response(inputbox, graytimer, inputline, xhr.responseText);
262
/* Disable the text box */
263
if (inputbox != null)
264
inputbox.setAttribute("disabled", "disabled");
265
ajax_call(callback, "consoleservice", which, args, "POST");
211
var res = JSON.parse(xmlhttp.responseText);
268
function console_response(inputbox, graytimer, inputline, responseText)
272
var res = JSON.parse(responseText);
276
alert("An internal error occurred in the python console.");
212
279
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);
219
280
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);
285
output.appendChild(document.createTextNode(res.okay + "\n"));
286
output.appendChild(span);
235
288
// set the prompt to >>>
236
289
var prompt = document.getElementById("console_prompt");
239
292
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
295
// 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);
296
var span = document.createElement("span");
297
span.setAttribute("class", "errorMsg");
298
span.appendChild(document.createTextNode(res.exc + "\n"));
299
output.appendChild(span);
300
// set the prompt to >>>
301
var prompt = document.getElementById("console_prompt");
302
prompt.replaceChild(document.createTextNode(">>> "), prompt.firstChild);
304
else if (res.hasOwnProperty('restart') && res.hasOwnProperty('key'))
306
// Server has indicated that the console should be restarted
308
// Get the new key (host, port, magic)
309
server_key = res.key;
311
// Print a reason to explain why we'd do such a horrible thing
312
// (console timeout, server error etc.)
313
var span = document.createElement("span");
314
span.setAttribute("class", "errorMsg");
315
span.appendChild(document.createTextNode("Console Restart: " + res.restart + "\n"));
316
output.appendChild(span);
317
// set the prompt to >>>
318
var prompt = document.getElementById("console_prompt");
319
prompt.replaceChild(document.createTextNode(">>> "), prompt.firstChild);
257
322
else if (res.hasOwnProperty('more'))
260
325
var prompt = document.getElementById("console_prompt");
261
326
prompt.replaceChild(document.createTextNode("... "), prompt.firstChild);
328
else if (res.hasOwnProperty('output'))
330
if (res.output.length > 0)
332
output.appendChild(document.createTextNode(res.output));
334
var callback = function(xhr)
336
console_response(inputbox, graytimer,
337
null, xhr.responseText);
341
var kind = "interrupt";
347
var args = {"key": server_key, "text":''};
348
ajax_call(callback, "consoleservice", kind, args, "POST");
350
// Open up the console so we can see the output
351
// FIXME: do we need to maximize here?
355
divScroll.activeScroll();
357
// Return early, so we don't re-enable the input box.
264
361
// assert res.hasOwnProperty('input')
265
362
var prompt = document.getElementById("console_prompt");
266
363
prompt.replaceChild(document.createTextNode("+++ "), prompt.firstChild);
366
if (inputbox != null)
368
/* Re-enable the text box */
369
clearTimeout(graytimer);
370
inputbox.removeAttribute("disabled");
371
inputbox.removeAttribute("class");
268
375
/* Open up the console so we can see the output */
269
376
console_maximize();
378
divScroll.activeScroll();
380
// Focus the input box by default
381
document.getElementById("console_output").focus()
382
document.getElementById("console_inputText").focus()
272
385
function catch_input(key)
441
/**** Following Code modified from ******************************************/
442
/**** http://radio.javaranch.com/pascarello/2006/08/17/1155837038219.html ***/
443
/****************************************************************************/
444
var chatscroll = new Object();
446
chatscroll.Pane = function(scrollContainerId)
448
this.scrollContainerId = scrollContainerId;
451
chatscroll.Pane.prototype.activeScroll = function()
453
var scrollDiv = document.getElementById(this.scrollContainerId);
454
var currentHeight = 0;
456
if (scrollDiv.scrollHeight > 0)
457
currentHeight = scrollDiv.scrollHeight;
459
if (objDiv.offsetHeight > 0)
460
currentHeight = scrollDiv.offsetHeight;
462
scrollDiv.scrollTop = currentHeight;
467
var divScroll = new chatscroll.Pane('console_output');