// Copyright (c) IPython Development Team.
// Distributed under the terms of the Modified BSD License.
define([
'base/js/namespace',
'jquery',
'codemirror/lib/codemirror',
'moment',
// silently upgrades CodeMirror
'codemirror/mode/meta',
], function(IPython, $, CodeMirror, moment){
"use strict";
var load_extensions = function () {
// load one or more IPython notebook extensions with requirejs
var extensions = [];
var extension_names = arguments;
for (var i = 0; i < extension_names.length; i++) {
extensions.push("nbextensions/" + arguments[i]);
}
require(extensions,
function () {
for (var i = 0; i < arguments.length; i++) {
var ext = arguments[i];
var ext_name = extension_names[i];
// success callback
console.log("Loaded extension: " + ext_name);
if (ext && ext.load_ipython_extension !== undefined) {
ext.load_ipython_extension();
}
}
},
function (err) {
// failure callback
console.log("Failed to load extension(s):", err.requireModules, err);
}
);
};
IPython.load_extensions = load_extensions;
/**
* Wait for a config section to load, and then load the extensions specified
* in a 'load_extensions' key inside it.
*/
function load_extensions_from_config(section) {
section.loaded.then(function() {
if (section.data.load_extensions) {
var nbextension_paths = Object.getOwnPropertyNames(
section.data.load_extensions);
load_extensions.apply(this, nbextension_paths);
}
});
}
//============================================================================
// Cross-browser RegEx Split
//============================================================================
// This code has been MODIFIED from the code licensed below to not replace the
// default browser split. The license is reproduced here.
// see http://blog.stevenlevithan.com/archives/cross-browser-split for more info:
/*!
* Cross-Browser Split 1.1.1
* Copyright 2007-2012 Steven Levithan <stevenlevithan.com>
* Available under the MIT License
* ECMAScript compliant, uniform cross-browser split method
*/
/**
* Splits a string into an array of strings using a regex or string
* separator. Matches of the separator are not included in the result array.
* However, if `separator` is a regex that contains capturing groups,
* backreferences are spliced into the result each time `separator` is
* matched. Fixes browser bugs compared to the native
* `String.prototype.split` and can be used reliably cross-browser.
* @param {String} str String to split.
* @param {RegExp} separator Regex to use for separating
* the string.
* @param {Number} [limit] Maximum number of items to include in the result
* array.
* @returns {Array} Array of substrings.
* @example
*
* // Basic use
* regex_split('a b c d', ' ');
* // -> ['a', 'b', 'c', 'd']
*
* // With limit
* regex_split('a b c d', ' ', 2);
* // -> ['a', 'b']
*
* // Backreferences in result array
* regex_split('..word1 word2..', /([a-z]+)(\d+)/i);
* // -> ['..', 'word', '1', ' ', 'word', '2', '..']
*/
var regex_split = function (str, separator, limit) {
var output = [],
flags = (separator.ignoreCase ? "i" : "") +
(separator.multiline ? "m" : "") +
(separator.extended ? "x" : "") + // Proposed for ES6
(separator.sticky ? "y" : ""), // Firefox 3+
lastLastIndex = 0,
separator2, match, lastIndex, lastLength;
// Make `global` and avoid `lastIndex` issues by working with a copy
separator = new RegExp(separator.source, flags + "g");
var compliantExecNpcg = typeof(/()??/.exec("")[1]) === "undefined";
if (!compliantExecNpcg) {
// Doesn't need flags gy, but they don't hurt
separator2 = new RegExp("^" + separator.source + "$(?!\\s)", flags);
}
/* Values for `limit`, per the spec:
* If undefined: 4294967295 // Math.pow(2, 32) - 1
* If 0, Infinity, or NaN: 0
* If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;
* If negative number: 4294967296 - Math.floor(Math.abs(limit))
* If other: Type-convert, then use the above rules
*/
limit = typeof(limit) === "undefined" ?
-1 >>> 0 : // Math.pow(2, 32) - 1
limit >>> 0; // ToUint32(limit)
for (match = separator.exec(str); match; match = separator.exec(str)) {
// `separator.lastIndex` is not reliable cross-browser
lastIndex = match.index + match[0].length;
if (lastIndex > lastLastIndex) {
output.push(str.slice(lastLastIndex, match.index));
// Fix browsers whose `exec` methods don't consistently return `undefined` for
// nonparticipating capturing groups
if (!compliantExecNpcg && match.length > 1) {
match[0].replace(separator2, function () {
for (var i = 1; i < arguments.length - 2; i++) {
if (typeof(arguments[i]) === "undefined") {
match[i] = undefined;
}
}
});
}
if (match.length > 1 && match.index < str.length) {
Array.prototype.push.apply(output, match.slice(1));
}
lastLength = match[0].length;
lastLastIndex = lastIndex;
if (output.length >= limit) {
break;
}
}
if (separator.lastIndex === match.index) {
separator.lastIndex++; // Avoid an infinite loop
}
}
if (lastLastIndex === str.length) {
if (lastLength || !separator.test("")) {
output.push("");
}
} else {
output.push(str.slice(lastLastIndex));
}
return output.length > limit ? output.slice(0, limit) : output;
};
//============================================================================
// End contributed Cross-browser RegEx Split
//============================================================================
var uuid = function () {
/**
* http://www.ietf.org/rfc/rfc4122.txt
*/
var s = [];
var hexDigits = "0123456789ABCDEF";
for (var i = 0; i < 32; i++) {
s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
}
s[12] = "4"; // bits 12-15 of the time_hi_and_version field to 0010
s[16] = hexDigits.substr((s[16] & 0x3) | 0x8, 1); // bits 6-7 of the clock_seq_hi_and_reserved to 01
var uuid = s.join("");
return uuid;
};
//Fix raw text to parse correctly in crazy XML
function xmlencode(string) {
return string.replace(/\&/g,'&'+'amp;')
.replace(/</g,'&'+'lt;')
.replace(/>/g,'&'+'gt;')
.replace(/\'/g,'&'+'apos;')
.replace(/\"/g,'&'+'quot;')
.replace(/`/g,'&'+'#96;');
}
//Map from terminal commands to CSS classes
var ansi_colormap = {
"01":"ansibold",
"30":"ansiblack",
"31":"ansired",
"32":"ansigreen",
"33":"ansiyellow",
"34":"ansiblue",
"35":"ansipurple",
"36":"ansicyan",
"37":"ansigray",
"40":"ansibgblack",
"41":"ansibgred",
"42":"ansibggreen",
"43":"ansibgyellow",
"44":"ansibgblue",
"45":"ansibgpurple",
"46":"ansibgcyan",
"47":"ansibggray"
};
function _process_numbers(attrs, numbers) {
// process ansi escapes
var n = numbers.shift();
if (ansi_colormap[n]) {
if ( ! attrs["class"] ) {
attrs["class"] = ansi_colormap[n];
} else {
attrs["class"] += " " + ansi_colormap[n];
}
} else if (n == "38" || n == "48") {
// VT100 256 color or 24 bit RGB
if (numbers.length < 2) {
console.log("Not enough fields for VT100 color", numbers);
return;
}
var index_or_rgb = numbers.shift();
var r,g,b;
if (index_or_rgb == "5") {
// 256 color
var idx = parseInt(numbers.shift(), 10);
if (idx < 16) {
// indexed ANSI
// ignore bright / non-bright distinction
idx = idx % 8;
var ansiclass = ansi_colormap[n[0] + (idx % 8).toString()];
if ( ! attrs["class"] ) {
attrs["class"] = ansiclass;
} else {
attrs["class"] += " " + ansiclass;
}
return;
} else if (idx < 232) {
// 216 color 6x6x6 RGB
idx = idx - 16;
b = idx % 6;
g = Math.floor(idx / 6) % 6;
r = Math.floor(idx / 36) % 6;
// convert to rgb
r = (r * 51);
g = (g * 51);
b = (b * 51);
} else {
// grayscale
idx = idx - 231;
// it's 1-24 and should *not* include black or white,
// so a 26 point scale
r = g = b = Math.floor(idx * 256 / 26);
}
} else if (index_or_rgb == "2") {
// Simple 24 bit RGB
if (numbers.length > 3) {
console.log("Not enough fields for RGB", numbers);
return;
}
r = numbers.shift();
g = numbers.shift();
b = numbers.shift();
} else {
console.log("unrecognized control", numbers);
return;
}
if (r !== undefined) {
// apply the rgb color
var line;
if (n == "38") {
line = "color: ";
} else {
line = "background-color: ";
}
line = line + "rgb(" + r + "," + g + "," + b + ");";
if ( !attrs.style ) {
attrs.style = line;
} else {
attrs.style += " " + line;
}
}
}
}
function ansispan(str) {
// ansispan function adapted from github.com/mmalecki/ansispan (MIT License)
// regular ansi escapes (using the table above)
var is_open = false;
return str.replace(/\033\[(0?[01]|22|39)?([;\d]+)?m/g, function(match, prefix, pattern) {
if (!pattern) {
// [(01|22|39|)m close spans
if (is_open) {
is_open = false;
return "</span>";
} else {
return "";
}
} else {
is_open = true;
// consume sequence of color escapes
var numbers = pattern.match(/\d+/g);
var attrs = {};
while (numbers.length > 0) {
_process_numbers(attrs, numbers);
}
var span = "<span ";
Object.keys(attrs).map(function (attr) {
span = span + " " + attr + '="' + attrs[attr] + '"';
});
return span + ">";
}
});
}
// Transform ANSI color escape codes into HTML <span> tags with css
// classes listed in the above ansi_colormap object. The actual color used
// are set in the css file.
function fixConsole(txt) {
txt = xmlencode(txt);
// Strip all ANSI codes that are not color related. Matches
// all ANSI codes that do not end with "m".
var ignored_re = /(?=(\033\[[\d;=]*[a-ln-zA-Z]{1}))\1(?!m)/g;
txt = txt.replace(ignored_re, "");
// color ansi codes
txt = ansispan(txt);
return txt;
}
// Remove chunks that should be overridden by the effect of
// carriage return characters
function fixCarriageReturn(txt) {
var tmp = txt;
do {
txt = tmp;
tmp = txt.replace(/\r+\n/gm, '\n'); // \r followed by \n --> newline
tmp = tmp.replace(/^.*\r+/gm, ''); // Other \r --> clear line
} while (tmp.length < txt.length);
return txt;
}
// Locate any URLs and convert them to a anchor tag
function autoLinkUrls(txt) {
return txt.replace(/(^|\s)(https?|ftp)(:[^'">\s]+)/gi,
"$1<a target=\"_blank\" href=\"$2$3\">$2$3</a>");
}
var points_to_pixels = function (points) {
/**
* A reasonably good way of converting between points and pixels.
*/
var test = $('<div style="display: none; width: 10000pt; padding:0; border:0;"></div>');
$('body').append(test);
var pixel_per_point = test.width()/10000;
test.remove();
return Math.floor(points*pixel_per_point);
};
var always_new = function (constructor) {
/**
* wrapper around contructor to avoid requiring `var a = new constructor()`
* useful for passing constructors as callbacks,
* not for programmer laziness.
* from http://programmers.stackexchange.com/questions/118798
*/
return function () {
var obj = Object.create(constructor.prototype);
constructor.apply(obj, arguments);
return obj;
};
};
var url_path_join = function () {
/**
* join a sequence of url components with '/'
*/
var url = '';
for (var i = 0; i < arguments.length; i++) {
if (arguments[i] === '') {
continue;
}
if (url.length > 0 && url[url.length-1] != '/') {
url = url + '/' + arguments[i];
} else {
url = url + arguments[i];
}
}
url = url.replace(/\/\/+/, '/');
return url;
};
var url_path_split = function (path) {
/**
* Like os.path.split for URLs.
* Always returns two strings, the directory path and the base filename
*/
var idx = path.lastIndexOf('/');
if (idx === -1) {
return ['', path];
} else {
return [ path.slice(0, idx), path.slice(idx + 1) ];
}
};
var parse_url = function (url) {
/**
* an `a` element with an href allows attr-access to the parsed segments of a URL
* a = parse_url("http://localhost:8888/path/name#hash")
* a.protocol = "http:"
* a.host = "localhost:8888"
* a.hostname = "localhost"
* a.port = 8888
* a.pathname = "/path/name"
* a.hash = "#hash"
*/
var a = document.createElement("a");
a.href = url;
return a;
};
var encode_uri_components = function (uri) {
/**
* encode just the components of a multi-segment uri,
* leaving '/' separators
*/
return uri.split('/').map(encodeURIComponent).join('/');
};
var url_join_encode = function () {
/**
* join a sequence of url components with '/',
* encoding each component with encodeURIComponent
*/
return encode_uri_components(url_path_join.apply(null, arguments));
};
var splitext = function (filename) {
/**
* mimic Python os.path.splitext
* Returns ['base', '.ext']
*/
var idx = filename.lastIndexOf('.');
if (idx > 0) {
return [filename.slice(0, idx), filename.slice(idx)];
} else {
return [filename, ''];
}
};
var escape_html = function (text) {
/**
* escape text to HTML
*/
return $("<div/>").text(text).html();
};
var get_body_data = function(key) {
/**
* get a url-encoded item from body.data and decode it
* we should never have any encoded URLs anywhere else in code
* until we are building an actual request
*/
var val = $('body').data(key);
if (!val)
return val;
return decodeURIComponent(val);
};
var to_absolute_cursor_pos = function (cm, cursor) {
/**
* get the absolute cursor position from CodeMirror's col, ch
*/
if (!cursor) {
cursor = cm.getCursor();
}
var cursor_pos = cursor.ch;
for (var i = 0; i < cursor.line; i++) {
cursor_pos += cm.getLine(i).length + 1;
}
return cursor_pos;
};
var from_absolute_cursor_pos = function (cm, cursor_pos) {
/**
* turn absolute cursor postion into CodeMirror col, ch cursor
*/
var i, line, next_line;
var offset = 0;
for (i = 0, next_line=cm.getLine(i); next_line !== undefined; i++, next_line=cm.getLine(i)) {
line = next_line;
if (offset + next_line.length < cursor_pos) {
offset += next_line.length + 1;
} else {
return {
line : i,
ch : cursor_pos - offset,
};
}
}
// reached end, return endpoint
return {
line : i - 1,
ch : line.length - 1,
};
};
// http://stackoverflow.com/questions/2400935/browser-detection-in-javascript
var browser = (function() {
if (typeof navigator === 'undefined') {
// navigator undefined in node
return 'None';
}
var N= navigator.appName, ua= navigator.userAgent, tem;
var M= ua.match(/(opera|chrome|safari|firefox|msie)\/?\s*(\.?\d+(\.\d+)*)/i);
if (M && (tem= ua.match(/version\/([\.\d]+)/i)) !== null) M[2]= tem[1];
M= M? [M[1], M[2]]: [N, navigator.appVersion,'-?'];
return M;
})();
// http://stackoverflow.com/questions/11219582/how-to-detect-my-browser-version-and-operating-system-using-javascript
var platform = (function () {
if (typeof navigator === 'undefined') {
// navigator undefined in node
return 'None';
}
var OSName="None";
if (navigator.appVersion.indexOf("Win")!=-1) OSName="Windows";
if (navigator.appVersion.indexOf("Mac")!=-1) OSName="MacOS";
if (navigator.appVersion.indexOf("X11")!=-1) OSName="UNIX";
if (navigator.appVersion.indexOf("Linux")!=-1) OSName="Linux";
return OSName;
})();
var get_url_param = function (name) {
// get a URL parameter. I cannot believe we actually need this.
// Based on http://stackoverflow.com/a/25359264/938949
var match = new RegExp('[?&]' + name + '=([^&]*)').exec(window.location.search);
if (match){
return decodeURIComponent(match[1] || '');
}
};
var is_or_has = function (a, b) {
/**
* Is b a child of a or a itself?
*/
return a.has(b).length !==0 || a.is(b);
};
var is_focused = function (e) {
/**
* Is element e, or one of its children focused?
*/
e = $(e);
var target = $(document.activeElement);
if (target.length > 0) {
if (is_or_has(e, target)) {
return true;
} else {
return false;
}
} else {
return false;
}
};
var mergeopt = function(_class, options, overwrite){
options = options || {};
overwrite = overwrite || {};
return $.extend(true, {}, _class.options_default, options, overwrite);
};
var ajax_error_msg = function (jqXHR) {
/**
* Return a JSON error message if there is one,
* otherwise the basic HTTP status text.
*/
if (jqXHR.responseJSON && jqXHR.responseJSON.traceback) {
return jqXHR.responseJSON.traceback;
} else if (jqXHR.responseJSON && jqXHR.responseJSON.message) {
return jqXHR.responseJSON.message;
} else {
return jqXHR.statusText;
}
};
var log_ajax_error = function (jqXHR, status, error) {
/**
* log ajax failures with informative messages
*/
var msg = "API request failed (" + jqXHR.status + "): ";
console.log(jqXHR);
msg += ajax_error_msg(jqXHR);
console.log(msg);
};
var requireCodeMirrorMode = function (mode, callback, errback) {
/**
* find a predefined mode or detect from CM metadata then
* require and callback with the resolveable mode string: mime or
* custom name
*/
var modename = (typeof mode == "string") ? mode :
mode.mode || mode.name;
// simplest, cheapest check by mode name: mode may also have config
if (CodeMirror.modes.hasOwnProperty(modename)) {
// return the full mode object, if it has a name
callback(mode.name ? mode : modename);
return;
}
// *somehow* get back a CM.modeInfo-like object that has .mode and
// .mime
var info = (mode && mode.mode && mode.mime && mode) ||
CodeMirror.findModeByName(modename) ||
CodeMirror.findModeByExtension(modename.split(".").slice(-1)) ||
CodeMirror.findModeByMIME(modename) ||
{mode: modename, mime: modename};
require([
// might want to use CodeMirror.modeURL here
['codemirror/mode', info.mode, info.mode].join('/'),
], function() {
// return the original mode, as from a kernelspec on first load
// or the mimetype, as for most highlighting
callback(mode.name ? mode : info.mime);
}, errback
);
};
/** Error type for wrapped XHR errors. */
var XHR_ERROR = 'XhrError';
/**
* Wraps an AJAX error as an Error object.
*/
var wrap_ajax_error = function (jqXHR, status, error) {
var wrapped_error = new Error(ajax_error_msg(jqXHR));
wrapped_error.name = XHR_ERROR;
// provide xhr response
wrapped_error.xhr = jqXHR;
wrapped_error.xhr_status = status;
wrapped_error.xhr_error = error;
return wrapped_error;
};
var promising_ajax = function(url, settings) {
/**
* Like $.ajax, but returning an ES6 promise. success and error settings
* will be ignored.
*/
settings = settings || {};
return new Promise(function(resolve, reject) {
settings.success = function(data, status, jqXHR) {
resolve(data);
};
settings.error = function(jqXHR, status, error) {
log_ajax_error(jqXHR, status, error);
reject(wrap_ajax_error(jqXHR, status, error));
};
$.ajax(url, settings);
});
};
var WrappedError = function(message, error){
/**
* Wrappable Error class
*
* The Error class doesn't actually act on `this`. Instead it always
* returns a new instance of Error. Here we capture that instance so we
* can apply it's properties to `this`.
*/
var tmp = Error.apply(this, [message]);
// Copy the properties of the error over to this.
var properties = Object.getOwnPropertyNames(tmp);
for (var i = 0; i < properties.length; i++) {
this[properties[i]] = tmp[properties[i]];
}
// Keep a stack of the original error messages.
if (error instanceof WrappedError) {
this.error_stack = error.error_stack;
} else {
this.error_stack = [error];
}
this.error_stack.push(tmp);
return this;
};
WrappedError.prototype = Object.create(Error.prototype, {});
var load_class = function(class_name, module_name, registry) {
/**
* Tries to load a class
*
* Tries to load a class from a module using require.js, if a module
* is specified, otherwise tries to load a class from the global
* registry, if the global registry is provided.
*/
return new Promise(function(resolve, reject) {
// Try loading the view module using require.js
if (module_name) {
require([module_name], function(module) {
if (module[class_name] === undefined) {
reject(new Error('Class '+class_name+' not found in module '+module_name));
} else {
resolve(module[class_name]);
}
}, reject);
} else {
if (registry && registry[class_name]) {
resolve(registry[class_name]);
} else {
reject(new Error('Class '+class_name+' not found in registry '));
}
}
});
};
var resolve_promises_dict = function(d) {
/**
* Resolve a promiseful dictionary.
* Returns a single Promise.
*/
var keys = Object.keys(d);
var values = [];
keys.forEach(function(key) {
values.push(d[key]);
});
return Promise.all(values).then(function(v) {
d = {};
for(var i=0; i<keys.length; i++) {
d[keys[i]] = v[i];
}
return d;
});
};
var reject = function(message, log) {
/**
* Creates a wrappable Promise rejection function.
*
* Creates a function that returns a Promise.reject with a new WrappedError
* that has the provided message and wraps the original error that
* caused the promise to reject.
*/
return function(error) {
var wrapped_error = new WrappedError(message, error);
if (log) console.error(wrapped_error);
return Promise.reject(wrapped_error);
};
};
var typeset = function(element, text) {
/**
* Apply MathJax rendering to an element, and optionally set its text
*
* If MathJax is not available, make no changes.
*
* Returns the output any number of typeset elements, or undefined if
* MathJax was not available.
*
* Parameters
* ----------
* element: Node, NodeList, or jQuery selection
* text: option string
*/
var $el = element.jquery ? element : $(element);
if(arguments.length > 1){
$el.text(text);
}
if(!window.MathJax){
return;
}
return $el.map(function(){
// MathJax takes a DOM node: $.map makes `this` the context
return MathJax.Hub.Queue(["Typeset", MathJax.Hub, this]);
});
};
var time = {};
time.milliseconds = {};
time.milliseconds.s = 1000;
time.milliseconds.m = 60 * time.milliseconds.s;
time.milliseconds.h = 60 * time.milliseconds.m;
time.milliseconds.d = 24 * time.milliseconds.h;
time.thresholds = {
// moment.js thresholds in milliseconds
s: moment.relativeTimeThreshold('s') * time.milliseconds.s,
m: moment.relativeTimeThreshold('m') * time.milliseconds.m,
h: moment.relativeTimeThreshold('h') * time.milliseconds.h,
d: moment.relativeTimeThreshold('d') * time.milliseconds.d,
};
time.timeout_from_dt = function (dt) {
/** compute a timeout based on dt
input and output both in milliseconds
use moment's relative time thresholds:
- 10 seconds if in 'seconds ago' territory
- 1 minute if in 'minutes ago'
- 1 hour otherwise
*/
if (dt < time.thresholds.s) {
return 10 * time.milliseconds.s;
} else if (dt < time.thresholds.m) {
return time.milliseconds.m;
} else {
return time.milliseconds.h;
}
};
var utils = {
load_extensions: load_extensions,
load_extensions_from_config: load_extensions_from_config,
regex_split : regex_split,
uuid : uuid,
fixConsole : fixConsole,
fixCarriageReturn : fixCarriageReturn,
autoLinkUrls : autoLinkUrls,
points_to_pixels : points_to_pixels,
get_body_data : get_body_data,
parse_url : parse_url,
url_path_split : url_path_split,
url_path_join : url_path_join,
url_join_encode : url_join_encode,
encode_uri_components : encode_uri_components,
splitext : splitext,
escape_html : escape_html,
always_new : always_new,
to_absolute_cursor_pos : to_absolute_cursor_pos,
from_absolute_cursor_pos : from_absolute_cursor_pos,
browser : browser,
platform: platform,
get_url_param: get_url_param,
is_or_has : is_or_has,
is_focused : is_focused,
mergeopt: mergeopt,
ajax_error_msg : ajax_error_msg,
log_ajax_error : log_ajax_error,
requireCodeMirrorMode : requireCodeMirrorMode,
XHR_ERROR : XHR_ERROR,
wrap_ajax_error : wrap_ajax_error,
promising_ajax : promising_ajax,
WrappedError: WrappedError,
load_class: load_class,
resolve_promises_dict: resolve_promises_dict,
reject: reject,
typeset: typeset,
time: time,
};
// Backwards compatability.
IPython.utils = utils;
return utils;
});