##// END OF EJS Templates
Prevent qtconsole frontend freeze on lots of output....
Prevent qtconsole frontend freeze on lots of output. The output from the kernel is now clipped to last `buffer_size` before displaying and a timer is used to flush the pending output text instead of attempting to display text on every stream output from kernel. The timer interval is adjusted based on actual time taken to append a screenful of text to widget. This throttles the widget repaints and avoids choking the Qt event loop leaving time to handle other Qt events. Test cases: In [1]: for i in xrange(1000000): print i In [2]: range(100000) Without this commit the first input causes the qtconsole frontend to freeze, not responding to `Ctrl+C`.

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contexthint.js
94 lines | 2.9 KiB | application/javascript | JavascriptLexer
// highly adapted for codemiror jshint
(function () {
"use strict";
function forEach(arr, f) {
for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]);
}
function arrayContains(arr, item) {
if (!Array.prototype.indexOf) {
var i = arr.length;
while (i--) {
if (arr[i] === item) {
return true;
}
}
return false;
}
return arr.indexOf(item) != -1;
}
CodeMirror.contextHint = function (editor) {
// Find the token at the cursor
var cur = editor.getCursor(),
token = editor.getTokenAt(cur),
tprop = token;
// If it's not a 'word-style' token, ignore the token.
// If it is a property, find out what it is a property of.
var list = new Array();
var clist = getCompletions(token, editor);
for (var i = 0; i < clist.length; i++) {
list.push({
str: clist[i],
type: "context",
from: {
line: cur.line,
ch: token.start
},
to: {
line: cur.line,
ch: token.end
}
})
}
return list;
}
// find all 'words' of current cell
var getAllTokens = function (editor) {
var found = [];
// add to found if not already in it
function maybeAdd(str) {
if (!arrayContains(found, str)) found.push(str);
}
// loop through all token on all lines
var lineCount = editor.lineCount();
// loop on line
for (var l = 0; l < lineCount; l++) {
var line = editor.getLine(l);
//loop on char
for (var c = 1; c < line.length; c++) {
var tk = editor.getTokenAt({
line: l,
ch: c
});
// if token has a class, it has geat chances of beeing
// of interest. Add it to the list of possible completions.
// we could skip token of ClassName 'comment'
// or 'number' and 'operator'
if (tk.className != null) {
maybeAdd(tk.string);
}
// jump to char after end of current token
c = tk.end;
}
}
return found;
}
function getCompletions(token, editor) {
var candidates = getAllTokens(editor);
// filter all token that have a common start (but nox exactly) the lenght of the current token
var lambda = function (x) {
return (x.indexOf(token.string) == 0 && x != token.string)
};
var filterd = candidates.filter(lambda);
return filterd;
}
})();