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use underscore.js

This commit is contained in:
Matthias Bartelmeß 2012-03-17 13:36:42 +01:00
parent 692e77b4e5
commit e559df18ce
13 changed files with 1069 additions and 113 deletions
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3
src/package.json
View File

@ -23,7 +23,8 @@
"log4js" : "0.4.1",
"jsdom-nocontextifiy" : "0.2.10",
"async-stacktrace" : "0.0.2",
"npm" : "1.1"
"npm" : "1.1",
"underscore" : "1.3.1"
},
"devDependencies": {
"jshint" : "*"

5
src/static/js/ace.js
View File

@ -29,6 +29,7 @@ Ace2Editor.registry = {
};
var hooks = require('./pluginfw/hooks');
var _ = require('./underscore');
function Ace2Editor()
{
@ -70,7 +71,7 @@ function Ace2Editor()
function doActionsPendingInit()
{
$.each(actionsPendingInit, function(i,fn){
_.each(actionsPendingInit, function(fn,i){
fn()
});
actionsPendingInit = [];
@ -87,7 +88,7 @@ function Ace2Editor()
'setUserChangeNotificationCallback', 'setAuthorInfo',
'setAuthorSelectionRange', 'callWithAce', 'execCommand', 'replaceRange'];
$.each(aceFunctionsPendingInit, function(i,fnName){
_.each(aceFunctionsPendingInit, function(fnName,i){
var prefix = 'ace_';
var name = prefix + fnName;
editor[fnName] = pendingInit(function(){

54
src/static/js/ace2_common.js
View File

@ -33,56 +33,6 @@ function object(o)
f.prototype = o;
return new f();
}
function extend(obj, props)
{
for (var p in props)
{
obj[p] = props[p];
}
return obj;
}
var forEachImpl = function(fn){
for (var i = 0; i < this.length; i++)
{
var result = fn(this[i], i, this);
}
}
function mapImpl(fn)
{
var result = [];
for (var i = 0; i < this.length; i++)
{
if (fn) result.push(fn(this[i], i, this));
else result.push(this[i]);
}
return result;
}
// From underscore.js
var keysImpl =function(obj) {
if (obj !== Object(obj)) throw new TypeError('Invalid object');
var keys = [];
for (var key in obj) if (obj.hasOwnProperty(key)) keys.push(key);
return keys;
};
Array.prototype.forEach = Array.prototype.forEach || forEachImpl;
Array.prototype.each = Array.prototype.each || forEachImpl;
Array.prototype.map = Array.prototype.map || mapImpl;
Object.keys = Object.keys || keysImpl;
function isArray(testObject)
{
return testObject && typeof testObject === 'object' && !(testObject.propertyIsEnumerable('length')) && typeof testObject.length === 'number';
}
var userAgent = (((function () {return this;})().navigator || {}).userAgent || 'node-js').toLowerCase();
// Figure out what browser is being used (stolen from jquery 1.2.1)
@ -144,12 +94,9 @@ function htmlPrettyEscape(str)
}
var noop = function(){};
var identity = function(x){return x};
exports.isNodeText = isNodeText;
exports.object = object;
exports.extend = extend;
exports.isArray = isArray;
exports.browser = browser;
exports.getAssoc = getAssoc;
exports.setAssoc = setAssoc;
@ -157,4 +104,3 @@ exports.binarySearch = binarySearch;
exports.binarySearchInfinite = binarySearchInfinite;
exports.htmlPrettyEscape = htmlPrettyEscape;
exports.noop = noop;
exports.identity = identity;

41
src/static/js/ace2_inner.js
View File

@ -19,23 +19,20 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var editor, $, jQuery, plugins, Ace2Common;
var editor, _, $, jQuery, plugins, Ace2Common;
Ace2Common = require('./ace2_common');
plugins = require('ep_etherpad-lite/static/js/pluginfw/plugins');
$ = jQuery = require('./rjquery').$;
_ = require("./underscore");
var isNodeText = Ace2Common.isNodeText,
object = Ace2Common.object,
extend = Ace2Common.extend,
browser = Ace2Common.browser,
getAssoc = Ace2Common.getAssoc,
setAssoc = Ace2Common.setAssoc,
isTextNode = Ace2Common.isTextNode,
forEach = Ace2Common.forEach,
map = Ace2Common.map,
binarySearchInfinite = Ace2Common.binarySearchInfinite,
htmlPrettyEscape = Ace2Common.htmlPrettyEscape,
noop = Ace2Common.noop;
@ -686,7 +683,7 @@ function Ace2Inner(){
}
else
{
lines = text.split('\n').map(textify);
lines = _.map(text.split('\n'), textify);
}
var newText = "\n";
if (lines.length > 0)
@ -1622,7 +1619,7 @@ function Ace2Inner(){
}
//var fragment = magicdom.wrapDom(document.createDocumentFragment());
domInsertsNeeded.push([nodeToAddAfter, lineNodeInfos]);
dirtyNodes.forEach(function(n){
_.each(dirtyNodes,function(n){
toDeleteAtEnd.push(n);
});
var spliceHints = {};
@ -1644,7 +1641,7 @@ function Ace2Inner(){
// update the representation
p.mark("splice");
splicesToDo.forEach(function(splice)
_.each(splicesToDo, function(splice)
{
doIncorpLineSplice(splice[0], splice[1], splice[2], splice[3], splice[4]);
});
@ -1654,14 +1651,14 @@ function Ace2Inner(){
//var isTimeUp = newTimeLimit(100);
// do DOM inserts
p.mark("insert");
domInsertsNeeded.forEach(function(ins)
_.each(domInsertsNeeded,function(ins)
{
insertDomLines(ins[0], ins[1], isTimeUp);
});
p.mark("del");
// delete old dom nodes
toDeleteAtEnd.forEach(function(n)
_.each(toDeleteAtEnd,function(n)
{
//var id = n.uniqueId();
// parent of n may not be "root" in IE due to non-tree-shaped DOM (wtf)
@ -1771,7 +1768,7 @@ function Ace2Inner(){
var charEnd = rep.lines.offsetOfEntry(endEntry) + endEntry.width;
//rep.lexer.lexCharRange([charStart, charEnd], isTimeUp);
infoStructs.forEach(function(info)
_.each(infoStructs, function(info)
{
var p2 = PROFILER("insertLine", false);
var node = info.node;
@ -2083,7 +2080,7 @@ function Ace2Inner(){
splice: function(start, numRemoved, newLinesVA)
{
var args = Array.prototype.slice.call(arguments, 2);
domAndRepSplice(start, numRemoved, args.map(function(s){ return s.slice(0, -1); }), null);
domAndRepSplice(start, numRemoved, _.map(args, function(s){ return s.slice(0, -1); }), null);
},
get: function(i)
{
@ -2095,7 +2092,7 @@ function Ace2Inner(){
},
slice_notused: function(start, end)
{
return rep.lines.slice(start, end).map(function(e)
return _.map(rep.lines.slice(start, end), function(e)
{
return e.text + '\n';
});
@ -2128,7 +2125,7 @@ function Ace2Inner(){
}
}
var lineEntries = newLineStrings.map(createDomLineEntry);
var lineEntries = _.map(newLineStrings, createDomLineEntry);
doRepLineSplice(startLine, deleteCount, lineEntries);
@ -2139,12 +2136,12 @@ function Ace2Inner(){
}
else nodeToAddAfter = null;
insertDomLines(nodeToAddAfter, lineEntries.map(function(entry)
insertDomLines(nodeToAddAfter, _.map(lineEntries, function(entry)
{
return entry.domInfo;
}), isTimeUp);
keysToDelete.forEach(function(k)
_.each(keysToDelete, function(k)
{
var n = doc.getElementById(k);
n.parentNode.removeChild(n);
@ -2464,7 +2461,7 @@ function Ace2Inner(){
function doRepLineSplice(startLine, deleteCount, newLineEntries)
{
newLineEntries.forEach(function(entry)
_.each(newLineEntries, function(entry)
{
entry.width = entry.text.length + 1;
});
@ -2479,7 +2476,7 @@ function Ace2Inner(){
currentCallStack.repChanged = true;
var newRegionEnd = rep.lines.offsetOfIndex(startLine + newLineEntries.length);
var newText = newLineEntries.map(function(e)
var newText = _.map(newLineEntries, function(e)
{
return e.text + '\n';
}).join('');
@ -2509,7 +2506,7 @@ function Ace2Inner(){
selEndHintChar = rep.lines.offsetOfIndex(hints.selEnd[0]) + hints.selEnd[1] - oldRegionStart;
}
var newText = newLineEntries.map(function(e)
var newText = _.map(newLineEntries, function(e)
{
return e.text + '\n';
}).join('');
@ -3050,7 +3047,7 @@ function Ace2Inner(){
{
// returns index of cleanRange containing i, or -1 if none
var answer = -1;
cleanRanges.forEach(function(r, idx)
_.each(cleanRanges ,function(r, idx)
{
if (i >= r[1]) return false; // keep looking
if (i < r[0]) return true; // not found, stop looking
@ -3843,7 +3840,7 @@ function Ace2Inner(){
function getRepHTML()
{
return rep.lines.slice().map(function(entry)
return _.map(rep.lines.slice(), function(entry)
{
var text = entry.text;
var content;
@ -4582,7 +4579,7 @@ function Ace2Inner(){
function teardown()
{
_teardownActions.forEach(function(a)
_.each(_teardownActions, function(a)
{
a();
});

10
src/static/js/broadcast.js
View File

@ -26,7 +26,7 @@ var AttribPool = require('./AttributePoolFactory').createAttributePool;
var Changeset = require('./Changeset');
var linestylefilter = require('./linestylefilter').linestylefilter;
var colorutils = require('./colorutils').colorutils;
var Ace2Common = require('./ace2_common');
var _ = require('./underscore');
// These parameters were global, now they are injected. A reference to the
// Timeslider controller would probably be more appropriate.
@ -152,7 +152,7 @@ function loadBroadcastJS(socket, sendSocketMsg, fireWhenAllScriptsAreLoaded, Bro
// splice the lines
splice: function(start, numRemoved, newLinesVA)
{
var newLines = Array.prototype.slice.call(arguments, 2).map(function(s) {
var newLines = _.map(Array.prototype.slice.call(arguments, 2), function(s) {
return s;
});
@ -275,7 +275,7 @@ function loadBroadcastJS(socket, sendSocketMsg, fireWhenAllScriptsAreLoaded, Bro
debugLog('Time Delta: ', timeDelta)
updateTimer();
var authors = padContents.getActiveAuthors().map(function(name)
var authors = _.map(padContents.getActiveAuthors(), function(name)
{
return authorData[name];
});
@ -381,7 +381,7 @@ function loadBroadcastJS(socket, sendSocketMsg, fireWhenAllScriptsAreLoaded, Bro
changesetLoader.queueUp(start, 1, update);
}
var authors = padContents.getActiveAuthors().map(function(name){
var authors = _.map(padContents.getActiveAuthors(), function(name){
return authorData[name];
});
BroadcastSlider.setAuthors(authors);
@ -524,7 +524,7 @@ function loadBroadcastJS(socket, sendSocketMsg, fireWhenAllScriptsAreLoaded, Bro
authorMap[obj.author] = obj.data;
receiveAuthorData(authorMap);
var authors = padContents.getActiveAuthors().map(function(name) {
var authors = _.map(padContents.getActiveAuthors(), function(name) {
return authorData[name];
});

6
src/static/js/broadcast_slider.js
View File

@ -22,7 +22,7 @@
// These parameters were global, now they are injected. A reference to the
// Timeslider controller would probably be more appropriate.
require('./ace2_common');
var _ = require('./underscore');
function loadBroadcastSliderJS(fireWhenAllScriptsAreLoaded)
{
@ -175,7 +175,7 @@ function loadBroadcastSliderJS(fireWhenAllScriptsAreLoaded)
$("#authorstable").empty();
var numAnonymous = 0;
var numNamed = 0;
authors.forEach(function(author)
_.each(authors, function(author)
{
if (author.name)
{
@ -469,7 +469,7 @@ function loadBroadcastSliderJS(fireWhenAllScriptsAreLoaded)
$("#timeslider").show();
setSliderLength(clientVars.totalRevs);
setSliderPosition(clientVars.revNum);
clientVars.savedRevisions.forEach(function(revision)
_.each(clientVars.savedRevisions, function(revision)
{
addSavedRevision(revision.revNum, revision);
})

12
src/static/js/domline.js
View File

@ -28,9 +28,11 @@
var Security = require('./security');
var hooks = require('./pluginfw/hooks');
var _ = require('./underscore');
var Ace2Common = require('./ace2_common');
var noop = Ace2Common.noop;
var identity = Ace2Common.identity;
var domline = {};
@ -88,8 +90,8 @@ domline.createDomLine = function(nonEmpty, doesWrap, optBrowser, optDocument)
return domline.processSpaces(s, doesWrap);
}
var perTextNodeProcess = (doesWrap ? identity : processSpaces);
var perHtmlLineProcess = (doesWrap ? processSpaces : identity);
var perTextNodeProcess = (doesWrap ? _.identity : processSpaces);
var perHtmlLineProcess = (doesWrap ? processSpaces : _.identity);
var lineClass = 'ace-line';
result.appendSpan = function(txt, cls)
{
@ -141,10 +143,10 @@ domline.createDomLine = function(nonEmpty, doesWrap, optBrowser, optDocument)
var extraOpenTags = "";
var extraCloseTags = "";
hooks.callAll("aceCreateDomLine", {
_.map(hooks.callAll("aceCreateDomLine", {
domline: domline,
cls: cls
}).map(function(modifier)
}), function(modifier)
{
cls = modifier.cls;
extraOpenTags = extraOpenTags + modifier.extraOpenTags;

4
src/static/js/linestylefilter.js
View File

@ -30,8 +30,8 @@
var Changeset = require('./Changeset');
var hooks = require('./pluginfw/hooks');
var linestylefilter = {};
var _ = require('./underscore');
linestylefilter.ATTRIB_CLASSES = {
'bold': 'tag:b',
@ -301,7 +301,7 @@ linestylefilter.getFilterStack = function(lineText, textAndClassFunc, browser)
linestylefilter: linestylefilter,
browser: browser
});
hookFilters.map(function(hookFilter)
_.map(hookFilters ,function(hookFilter)
{
func = hookFilter(lineText, func);
});

7
src/static/js/pluginfw/hooks.js
View File

@ -1,10 +1,13 @@
var plugins = require("ep_etherpad-lite/static/js/pluginfw/plugins");
var _;
/* FIXME: Ugly hack, in the future, use same code for server & client */
if (plugins.isClient) {
var async = require("ep_etherpad-lite/static/js/pluginfw/async");
var async = require("ep_etherpad-lite/static/js/pluginfw/async");
_ = require("underscore");
} else {
var async = require("async");
_ = require("underscore");
}
var hookCallWrapper = function (hook, hook_name, args, cb) {
@ -34,7 +37,7 @@ exports.flatten = function (lst) {
exports.callAll = function (hook_name, args) {
if (plugins.hooks[hook_name] === undefined) return [];
return exports.flatten(plugins.hooks[hook_name].map(function (hook) {
return exports.flatten(_.map(plugins.hooks[hook_name], function (hook) {
return hookCallWrapper(hook, hook_name, args);
}));
}

34
src/static/js/pluginfw/plugins.js
View File

@ -1,5 +1,7 @@
exports.isClient = typeof global != "object";
var _;
if (!exports.isClient) {
var npm = require("npm/lib/npm.js");
var readInstalled = require("npm/lib/utils/read-installed.js");
@ -10,10 +12,12 @@ if (!exports.isClient) {
var fs = require("fs");
var tsort = require("./tsort");
var util = require("util");
_ = require("underscore");
}else{
require("../ace2_common.js");
var $, jQuery;
var $, jQuery
$ = jQuery = require("ep_etherpad-lite/static/js/rjquery").$;
_ = require("ep_etherpad-lite/static/js/underscore");
}
exports.prefix = 'ep_';
@ -30,17 +34,17 @@ exports.ensure = function (cb) {
}
exports.formatPlugins = function () {
return Object.keys(exports.plugins).join(", ");
return _.keys(exports.plugins).join(", ");
}
exports.formatParts = function () {
return exports.parts.map(function (part) { return part.full_name; }).join("\n");
return _.map(exports.parts, function (part) { return part.full_name; }).join("\n");
}
exports.formatHooks = function () {
var res = [];
Object.keys(exports.hooks).forEach(function (hook_name) {
exports.hooks[hook_name].forEach(function (hook) {
_.chain(exports.hooks).keys().forEach(function (hook_name) {
_.forEach(exports.hooks[hook_name], function (hook) {
res.push(hook.hook_name + ": " + hook.hook_fn_name + " from " + hook.part.full_name);
});
});
@ -50,7 +54,7 @@ exports.formatHooks = function () {
exports.loadFn = function (path) {
var x = path.split(":");
var fn = require(x[0]);
x[1].split(".").forEach(function (name) {
_.each(x[1].split("."), function (name) {
fn = fn[name];
});
return fn;
@ -58,8 +62,8 @@ exports.loadFn = function (path) {
exports.extractHooks = function (parts, hook_set_name) {
var hooks = {};
parts.forEach(function (part) {
Object.keys(part[hook_set_name] || {}).forEach(function (hook_name) {
_.each(parts,function (part) {
_.chain(part[hook_set_name] || {}).keys().each(function (hook_name) {
if (hooks[hook_name] === undefined) hooks[hook_name] = [];
var hook_fn_name = part[hook_set_name][hook_name];
var hook_fn = exports.loadFn(part[hook_set_name][hook_name]);
@ -114,7 +118,7 @@ exports.getPackages = function (cb) {
if (er) cb(er, null);
var packages = {};
function flatten(deps) {
Object.keys(deps).forEach(function (name) {
_.chain(deps).keys().each(function (name) {
if (name.indexOf(exports.prefix) == 0) {
packages[name] = deps[name];
}
@ -141,7 +145,7 @@ exports.loadPlugin = function (packages, plugin_name, plugins, parts, cb) {
var plugin = JSON.parse(data);
plugin.package = packages[plugin_name];
plugins[plugin_name] = plugin;
plugin.parts.forEach(function (part) {
_.each(plugin.parts, function (part) {
part.plugin = plugin_name;
part.full_name = plugin_name + "/" + part.name;
parts[part.full_name] = part;
@ -156,11 +160,11 @@ exports.loadPlugin = function (packages, plugin_name, plugins, parts, cb) {
exports.partsToParentChildList = function (parts) {
var res = [];
Object.keys(parts).forEach(function (name) {
(parts[name].post || []).forEach(function (child_name) {
_.chain(parts).keys().forEach(function (name) {
_.each(parts[name].post || [], function (child_name) {
res.push([name, child_name]);
});
(parts[name].pre || []).forEach(function (parent_name) {
_.each(parts[name].pre || [], function (parent_name) {
res.push([parent_name, name]);
});
if (!parts[name].pre && !parts[name].post) {
@ -170,6 +174,8 @@ exports.partsToParentChildList = function (parts) {
return res;
}
// Used only in Node, so no need for _
exports.sortParts = function(parts) {
return tsort(
exports.partsToParentChildList(parts)

3
src/static/js/timeslider.js
View File

@ -29,6 +29,7 @@ require('./undo-xpopup');
var createCookie = require('./pad_utils').createCookie;
var readCookie = require('./pad_utils').readCookie;
var randomString = require('./pad_utils').randomString;
var _ = require('./underscore');
var socket, token, padId, export_links;
@ -138,7 +139,7 @@ function handleClientVars(message)
var export_rev_regex = /(\/\d+)?\/export/
BroadcastSlider.onSlider(function(revno)
{
export_links.each(function()
_.each(export_links, function()
{
this.setAttribute('href', this.href.replace(export_rev_regex, '/' + revno + '/export'));
});

999
src/static/js/underscore.js Normal file
View File

@ -0,0 +1,999 @@
// Underscore.js 1.3.1
// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
// Underscore is freely distributable under the MIT license.
// Portions of Underscore are inspired or borrowed from Prototype,
// Oliver Steele's Functional, and John Resig's Micro-Templating.
// For all details and documentation:
// http://documentcloud.github.com/underscore
(function() {
// Baseline setup
// --------------
// Establish the root object, `window` in the browser, or `global` on the server.
var root = this;
// Save the previous value of the `_` variable.
var previousUnderscore = root._;
// Establish the object that gets returned to break out of a loop iteration.
var breaker = {};
// Save bytes in the minified (but not gzipped) version:
var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
// Create quick reference variables for speed access to core prototypes.
var slice = ArrayProto.slice,
unshift = ArrayProto.unshift,
toString = ObjProto.toString,
hasOwnProperty = ObjProto.hasOwnProperty;
// All **ECMAScript 5** native function implementations that we hope to use
// are declared here.
var
nativeForEach = ArrayProto.forEach,
nativeMap = ArrayProto.map,
nativeReduce = ArrayProto.reduce,
nativeReduceRight = ArrayProto.reduceRight,
nativeFilter = ArrayProto.filter,
nativeEvery = ArrayProto.every,
nativeSome = ArrayProto.some,
nativeIndexOf = ArrayProto.indexOf,
nativeLastIndexOf = ArrayProto.lastIndexOf,
nativeIsArray = Array.isArray,
nativeKeys = Object.keys,
nativeBind = FuncProto.bind;
// Create a safe reference to the Underscore object for use below.
var _ = function(obj) { return new wrapper(obj); };
// Export the Underscore object for **Node.js**, with
// backwards-compatibility for the old `require()` API. If we're in
// the browser, add `_` as a global object via a string identifier,
// for Closure Compiler "advanced" mode.
if (typeof exports !== 'undefined') {
if (typeof module !== 'undefined' && module.exports) {
exports = module.exports = _;
}
exports._ = _;
} else {
root['_'] = _;
}
// Current version.
_.VERSION = '1.3.1';
// Collection Functions
// --------------------
// The cornerstone, an `each` implementation, aka `forEach`.
// Handles objects with the built-in `forEach`, arrays, and raw objects.
// Delegates to **ECMAScript 5**'s native `forEach` if available.
var each = _.each = _.forEach = function(obj, iterator, context) {
if (obj == null) return;
if (nativeForEach && obj.forEach === nativeForEach) {
obj.forEach(iterator, context);
} else if (obj.length === +obj.length) {
for (var i = 0, l = obj.length; i < l; i++) {
if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
}
} else {
for (var key in obj) {
if (_.has(obj, key)) {
if (iterator.call(context, obj[key], key, obj) === breaker) return;
}
}
}
};
// Return the results of applying the iterator to each element.
// Delegates to **ECMAScript 5**'s native `map` if available.
_.map = _.collect = function(obj, iterator, context) {
var results = [];
if (obj == null) return results;
if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
each(obj, function(value, index, list) {
results[results.length] = iterator.call(context, value, index, list);
});
if (obj.length === +obj.length) results.length = obj.length;
return results;
};
// **Reduce** builds up a single result from a list of values, aka `inject`,
// or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
_.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
var initial = arguments.length > 2;
if (obj == null) obj = [];
if (nativeReduce && obj.reduce === nativeReduce) {
if (context) iterator = _.bind(iterator, context);
return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
}
each(obj, function(value, index, list) {
if (!initial) {
memo = value;
initial = true;
} else {
memo = iterator.call(context, memo, value, index, list);
}
});
if (!initial) throw new TypeError('Reduce of empty array with no initial value');
return memo;
};
// The right-associative version of reduce, also known as `foldr`.
// Delegates to **ECMAScript 5**'s native `reduceRight` if available.
_.reduceRight = _.foldr = function(obj, iterator, memo, context) {
var initial = arguments.length > 2;
if (obj == null) obj = [];
if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
if (context) iterator = _.bind(iterator, context);
return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
}
var reversed = _.toArray(obj).reverse();
if (context && !initial) iterator = _.bind(iterator, context);
return initial ? _.reduce(reversed, iterator, memo, context) : _.reduce(reversed, iterator);
};
// Return the first value which passes a truth test. Aliased as `detect`.
_.find = _.detect = function(obj, iterator, context) {
var result;
any(obj, function(value, index, list) {
if (iterator.call(context, value, index, list)) {
result = value;
return true;
}
});
return result;
};
// Return all the elements that pass a truth test.
// Delegates to **ECMAScript 5**'s native `filter` if available.
// Aliased as `select`.
_.filter = _.select = function(obj, iterator, context) {
var results = [];
if (obj == null) return results;
if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
each(obj, function(value, index, list) {
if (iterator.call(context, value, index, list)) results[results.length] = value;
});
return results;
};
// Return all the elements for which a truth test fails.
_.reject = function(obj, iterator, context) {
var results = [];
if (obj == null) return results;
each(obj, function(value, index, list) {
if (!iterator.call(context, value, index, list)) results[results.length] = value;
});
return results;
};
// Determine whether all of the elements match a truth test.
// Delegates to **ECMAScript 5**'s native `every` if available.
// Aliased as `all`.
_.every = _.all = function(obj, iterator, context) {
var result = true;
if (obj == null) return result;
if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
each(obj, function(value, index, list) {
if (!(result = result && iterator.call(context, value, index, list))) return breaker;
});
return result;
};
// Determine if at least one element in the object matches a truth test.
// Delegates to **ECMAScript 5**'s native `some` if available.
// Aliased as `any`.
var any = _.some = _.any = function(obj, iterator, context) {
iterator || (iterator = _.identity);
var result = false;
if (obj == null) return result;
if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
each(obj, function(value, index, list) {
if (result || (result = iterator.call(context, value, index, list))) return breaker;
});
return !!result;
};
// Determine if a given value is included in the array or object using `===`.
// Aliased as `contains`.
_.include = _.contains = function(obj, target) {
var found = false;
if (obj == null) return found;
if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
found = any(obj, function(value) {
return value === target;
});
return found;
};
// Invoke a method (with arguments) on every item in a collection.
_.invoke = function(obj, method) {
var args = slice.call(arguments, 2);
return _.map(obj, function(value) {
return (_.isFunction(method) ? method || value : value[method]).apply(value, args);
});
};
// Convenience version of a common use case of `map`: fetching a property.
_.pluck = function(obj, key) {
return _.map(obj, function(value){ return value[key]; });
};
// Return the maximum element or (element-based computation).
_.max = function(obj, iterator, context) {
if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
if (!iterator && _.isEmpty(obj)) return -Infinity;
var result = {computed : -Infinity};
each(obj, function(value, index, list) {
var computed = iterator ? iterator.call(context, value, index, list) : value;
computed >= result.computed && (result = {value : value, computed : computed});
});
return result.value;
};
// Return the minimum element (or element-based computation).
_.min = function(obj, iterator, context) {
if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
if (!iterator && _.isEmpty(obj)) return Infinity;
var result = {computed : Infinity};
each(obj, function(value, index, list) {
var computed = iterator ? iterator.call(context, value, index, list) : value;
computed < result.computed && (result = {value : value, computed : computed});
});
return result.value;
};
// Shuffle an array.
_.shuffle = function(obj) {
var shuffled = [], rand;
each(obj, function(value, index, list) {
if (index == 0) {
shuffled[0] = value;
} else {
rand = Math.floor(Math.random() * (index + 1));
shuffled[index] = shuffled[rand];
shuffled[rand] = value;
}
});
return shuffled;
};
// Sort the object's values by a criterion produced by an iterator.
_.sortBy = function(obj, iterator, context) {
return _.pluck(_.map(obj, function(value, index, list) {
return {
value : value,
criteria : iterator.call(context, value, index, list)
};
}).sort(function(left, right) {
var a = left.criteria, b = right.criteria;
return a < b ? -1 : a > b ? 1 : 0;
}), 'value');
};
// Groups the object's values by a criterion. Pass either a string attribute
// to group by, or a function that returns the criterion.
_.groupBy = function(obj, val) {
var result = {};
var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
each(obj, function(value, index) {
var key = iterator(value, index);
(result[key] || (result[key] = [])).push(value);
});
return result;
};
// Use a comparator function to figure out at what index an object should
// be inserted so as to maintain order. Uses binary search.
_.sortedIndex = function(array, obj, iterator) {
iterator || (iterator = _.identity);
var low = 0, high = array.length;
while (low < high) {
var mid = (low + high) >> 1;
iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
}
return low;
};
// Safely convert anything iterable into a real, live array.
_.toArray = function(iterable) {
if (!iterable) return [];
if (iterable.toArray) return iterable.toArray();
if (_.isArray(iterable)) return slice.call(iterable);
if (_.isArguments(iterable)) return slice.call(iterable);
return _.values(iterable);
};
// Return the number of elements in an object.
_.size = function(obj) {
return _.toArray(obj).length;
};
// Array Functions
// ---------------
// Get the first element of an array. Passing **n** will return the first N
// values in the array. Aliased as `head`. The **guard** check allows it to work
// with `_.map`.
_.first = _.head = function(array, n, guard) {
return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
};
// Returns everything but the last entry of the array. Especcialy useful on
// the arguments object. Passing **n** will return all the values in
// the array, excluding the last N. The **guard** check allows it to work with
// `_.map`.
_.initial = function(array, n, guard) {
return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
};
// Get the last element of an array. Passing **n** will return the last N
// values in the array. The **guard** check allows it to work with `_.map`.
_.last = function(array, n, guard) {
if ((n != null) && !guard) {
return slice.call(array, Math.max(array.length - n, 0));
} else {
return array[array.length - 1];
}
};
// Returns everything but the first entry of the array. Aliased as `tail`.
// Especially useful on the arguments object. Passing an **index** will return
// the rest of the values in the array from that index onward. The **guard**
// check allows it to work with `_.map`.
_.rest = _.tail = function(array, index, guard) {
return slice.call(array, (index == null) || guard ? 1 : index);
};
// Trim out all falsy values from an array.
_.compact = function(array) {
return _.filter(array, function(value){ return !!value; });
};
// Return a completely flattened version of an array.
_.flatten = function(array, shallow) {
return _.reduce(array, function(memo, value) {
if (_.isArray(value)) return memo.concat(shallow ? value : _.flatten(value));
memo[memo.length] = value;
return memo;
}, []);
};
// Return a version of the array that does not contain the specified value(s).
_.without = function(array) {
return _.difference(array, slice.call(arguments, 1));
};
// Produce a duplicate-free version of the array. If the array has already
// been sorted, you have the option of using a faster algorithm.
// Aliased as `unique`.
_.uniq = _.unique = function(array, isSorted, iterator) {
var initial = iterator ? _.map(array, iterator) : array;
var result = [];
_.reduce(initial, function(memo, el, i) {
if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) {
memo[memo.length] = el;
result[result.length] = array[i];
}
return memo;
}, []);
return result;
};
// Produce an array that contains the union: each distinct element from all of
// the passed-in arrays.
_.union = function() {
return _.uniq(_.flatten(arguments, true));
};
// Produce an array that contains every item shared between all the
// passed-in arrays. (Aliased as "intersect" for back-compat.)
_.intersection = _.intersect = function(array) {
var rest = slice.call(arguments, 1);
return _.filter(_.uniq(array), function(item) {
return _.every(rest, function(other) {
return _.indexOf(other, item) >= 0;
});
});
};
// Take the difference between one array and a number of other arrays.
// Only the elements present in just the first array will remain.
_.difference = function(array) {
var rest = _.flatten(slice.call(arguments, 1));
return _.filter(array, function(value){ return !_.include(rest, value); });
};
// Zip together multiple lists into a single array -- elements that share
// an index go together.
_.zip = function() {
var args = slice.call(arguments);
var length = _.max(_.pluck(args, 'length'));
var results = new Array(length);
for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
return results;
};
// If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
// we need this function. Return the position of the first occurrence of an
// item in an array, or -1 if the item is not included in the array.
// Delegates to **ECMAScript 5**'s native `indexOf` if available.
// If the array is large and already in sort order, pass `true`
// for **isSorted** to use binary search.
_.indexOf = function(array, item, isSorted) {
if (array == null) return -1;
var i, l;
if (isSorted) {
i = _.sortedIndex(array, item);
return array[i] === item ? i : -1;
}
if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
for (i = 0, l = array.length; i < l; i++) if (i in array && array[i] === item) return i;
return -1;
};
// Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
_.lastIndexOf = function(array, item) {
if (array == null) return -1;
if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
var i = array.length;
while (i--) if (i in array && array[i] === item) return i;
return -1;
};
// Generate an integer Array containing an arithmetic progression. A port of
// the native Python `range()` function. See
// [the Python documentation](http://docs.python.org/library/functions.html#range).
_.range = function(start, stop, step) {
if (arguments.length <= 1) {
stop = start || 0;
start = 0;
}
step = arguments[2] || 1;
var len = Math.max(Math.ceil((stop - start) / step), 0);
var idx = 0;
var range = new Array(len);
while(idx < len) {
range[idx++] = start;
start += step;
}
return range;
};
// Function (ahem) Functions
// ------------------
// Reusable constructor function for prototype setting.
var ctor = function(){};
// Create a function bound to a given object (assigning `this`, and arguments,
// optionally). Binding with arguments is also known as `curry`.
// Delegates to **ECMAScript 5**'s native `Function.bind` if available.
// We check for `func.bind` first, to fail fast when `func` is undefined.
_.bind = function bind(func, context) {
var bound, args;
if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
if (!_.isFunction(func)) throw new TypeError;
args = slice.call(arguments, 2);
return bound = function() {
if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
ctor.prototype = func.prototype;
var self = new ctor;
var result = func.apply(self, args.concat(slice.call(arguments)));
if (Object(result) === result) return result;
return self;
};
};
// Bind all of an object's methods to that object. Useful for ensuring that
// all callbacks defined on an object belong to it.
_.bindAll = function(obj) {
var funcs = slice.call(arguments, 1);
if (funcs.length == 0) funcs = _.functions(obj);
each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
return obj;
};
// Memoize an expensive function by storing its results.
_.memoize = function(func, hasher) {
var memo = {};
hasher || (hasher = _.identity);
return function() {
var key = hasher.apply(this, arguments);
return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
};
};
// Delays a function for the given number of milliseconds, and then calls
// it with the arguments supplied.
_.delay = function(func, wait) {
var args = slice.call(arguments, 2);
return setTimeout(function(){ return func.apply(func, args); }, wait);
};
// Defers a function, scheduling it to run after the current call stack has
// cleared.
_.defer = function(func) {
return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
};
// Returns a function, that, when invoked, will only be triggered at most once
// during a given window of time.
_.throttle = function(func, wait) {
var context, args, timeout, throttling, more;
var whenDone = _.debounce(function(){ more = throttling = false; }, wait);
return function() {
context = this; args = arguments;
var later = function() {
timeout = null;
if (more) func.apply(context, args);
whenDone();
};
if (!timeout) timeout = setTimeout(later, wait);
if (throttling) {
more = true;
} else {
func.apply(context, args);
}
whenDone();
throttling = true;
};
};
// Returns a function, that, as long as it continues to be invoked, will not
// be triggered. The function will be called after it stops being called for
// N milliseconds.
_.debounce = function(func, wait) {
var timeout;
return function() {
var context = this, args = arguments;
var later = function() {
timeout = null;
func.apply(context, args);
};
clearTimeout(timeout);
timeout = setTimeout(later, wait);
};
};
// Returns a function that will be executed at most one time, no matter how
// often you call it. Useful for lazy initialization.
_.once = function(func) {
var ran = false, memo;
return function() {
if (ran) return memo;
ran = true;
return memo = func.apply(this, arguments);
};
};
// Returns the first function passed as an argument to the second,
// allowing you to adjust arguments, run code before and after, and
// conditionally execute the original function.
_.wrap = function(func, wrapper) {
return function() {
var args = [func].concat(slice.call(arguments, 0));
return wrapper.apply(this, args);
};
};
// Returns a function that is the composition of a list of functions, each
// consuming the return value of the function that follows.
_.compose = function() {
var funcs = arguments;
return function() {
var args = arguments;
for (var i = funcs.length - 1; i >= 0; i--) {
args = [funcs[i].apply(this, args)];
}
return args[0];
};
};
// Returns a function that will only be executed after being called N times.
_.after = function(times, func) {
if (times <= 0) return func();
return function() {
if (--times < 1) { return func.apply(this, arguments); }
};
};
// Object Functions
// ----------------
// Retrieve the names of an object's properties.
// Delegates to **ECMAScript 5**'s native `Object.keys`
_.keys = nativeKeys || function(obj) {
if (obj !== Object(obj)) throw new TypeError('Invalid object');
var keys = [];
for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
return keys;
};
// Retrieve the values of an object's properties.
_.values = function(obj) {
return _.map(obj, _.identity);
};
// Return a sorted list of the function names available on the object.
// Aliased as `methods`
_.functions = _.methods = function(obj) {
var names = [];
for (var key in obj) {
if (_.isFunction(obj[key])) names.push(key);
}
return names.sort();
};
// Extend a given object with all the properties in passed-in object(s).
_.extend = function(obj) {
each(slice.call(arguments, 1), function(source) {
for (var prop in source) {
obj[prop] = source[prop];
}
});
return obj;
};
// Fill in a given object with default properties.
_.defaults = function(obj) {
each(slice.call(arguments, 1), function(source) {
for (var prop in source) {
if (obj[prop] == null) obj[prop] = source[prop];
}
});
return obj;
};
// Create a (shallow-cloned) duplicate of an object.
_.clone = function(obj) {
if (!_.isObject(obj)) return obj;
return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
};
// Invokes interceptor with the obj, and then returns obj.
// The primary purpose of this method is to "tap into" a method chain, in
// order to perform operations on intermediate results within the chain.
_.tap = function(obj, interceptor) {
interceptor(obj);
return obj;
};
// Internal recursive comparison function.
function eq(a, b, stack) {
// Identical objects are equal. `0 === -0`, but they aren't identical.
// See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
if (a === b) return a !== 0 || 1 / a == 1 / b;
// A strict comparison is necessary because `null == undefined`.
if (a == null || b == null) return a === b;
// Unwrap any wrapped objects.
if (a._chain) a = a._wrapped;
if (b._chain) b = b._wrapped;
// Invoke a custom `isEqual` method if one is provided.
if (a.isEqual && _.isFunction(a.isEqual)) return a.isEqual(b);
if (b.isEqual && _.isFunction(b.isEqual)) return b.isEqual(a);
// Compare `[[Class]]` names.
var className = toString.call(a);
if (className != toString.call(b)) return false;
switch (className) {
// Strings, numbers, dates, and booleans are compared by value.
case '[object String]':
// Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
// equivalent to `new String("5")`.
return a == String(b);
case '[object Number]':
// `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
// other numeric values.
return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
case '[object Date]':
case '[object Boolean]':
// Coerce dates and booleans to numeric primitive values. Dates are compared by their
// millisecond representations. Note that invalid dates with millisecond representations
// of `NaN` are not equivalent.
return +a == +b;
// RegExps are compared by their source patterns and flags.
case '[object RegExp]':
return a.source == b.source &&
a.global == b.global &&
a.multiline == b.multiline &&
a.ignoreCase == b.ignoreCase;
}
if (typeof a != 'object' || typeof b != 'object') return false;
// Assume equality for cyclic structures. The algorithm for detecting cyclic
// structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
var length = stack.length;
while (length--) {
// Linear search. Performance is inversely proportional to the number of
// unique nested structures.
if (stack[length] == a) return true;
}
// Add the first object to the stack of traversed objects.
stack.push(a);
var size = 0, result = true;
// Recursively compare objects and arrays.
if (className == '[object Array]') {
// Compare array lengths to determine if a deep comparison is necessary.
size = a.length;
result = size == b.length;
if (result) {
// Deep compare the contents, ignoring non-numeric properties.
while (size--) {
// Ensure commutative equality for sparse arrays.
if (!(result = size in a == size in b && eq(a[size], b[size], stack))) break;
}
}
} else {
// Objects with different constructors are not equivalent.
if ('constructor' in a != 'constructor' in b || a.constructor != b.constructor) return false;
// Deep compare objects.
for (var key in a) {
if (_.has(a, key)) {
// Count the expected number of properties.
size++;
// Deep compare each member.
if (!(result = _.has(b, key) && eq(a[key], b[key], stack))) break;
}
}
// Ensure that both objects contain the same number of properties.
if (result) {
for (key in b) {
if (_.has(b, key) && !(size--)) break;
}
result = !size;
}
}
// Remove the first object from the stack of traversed objects.
stack.pop();
return result;
}
// Perform a deep comparison to check if two objects are equal.
_.isEqual = function(a, b) {
return eq(a, b, []);
};
// Is a given array, string, or object empty?
// An "empty" object has no enumerable own-properties.
_.isEmpty = function(obj) {
if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
for (var key in obj) if (_.has(obj, key)) return false;
return true;
};
// Is a given value a DOM element?
_.isElement = function(obj) {
return !!(obj && obj.nodeType == 1);
};
// Is a given value an array?
// Delegates to ECMA5's native Array.isArray
_.isArray = nativeIsArray || function(obj) {
return toString.call(obj) == '[object Array]';
};
// Is a given variable an object?
_.isObject = function(obj) {
return obj === Object(obj);
};
// Is a given variable an arguments object?
_.isArguments = function(obj) {
return toString.call(obj) == '[object Arguments]';
};
if (!_.isArguments(arguments)) {
_.isArguments = function(obj) {
return !!(obj && _.has(obj, 'callee'));
};
}
// Is a given value a function?
_.isFunction = function(obj) {
return toString.call(obj) == '[object Function]';
};
// Is a given value a string?
_.isString = function(obj) {
return toString.call(obj) == '[object String]';
};
// Is a given value a number?
_.isNumber = function(obj) {
return toString.call(obj) == '[object Number]';
};
// Is the given value `NaN`?
_.isNaN = function(obj) {
// `NaN` is the only value for which `===` is not reflexive.
return obj !== obj;
};
// Is a given value a boolean?
_.isBoolean = function(obj) {
return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
};
// Is a given value a date?
_.isDate = function(obj) {
return toString.call(obj) == '[object Date]';
};
// Is the given value a regular expression?
_.isRegExp = function(obj) {
return toString.call(obj) == '[object RegExp]';
};
// Is a given value equal to null?
_.isNull = function(obj) {
return obj === null;
};
// Is a given variable undefined?
_.isUndefined = function(obj) {
return obj === void 0;
};
// Has own property?
_.has = function(obj, key) {
return hasOwnProperty.call(obj, key);
};
// Utility Functions
// -----------------
// Run Underscore.js in *noConflict* mode, returning the `_` variable to its
// previous owner. Returns a reference to the Underscore object.
_.noConflict = function() {
root._ = previousUnderscore;
return this;
};
// Keep the identity function around for default iterators.
_.identity = function(value) {
return value;
};
// Run a function **n** times.
_.times = function (n, iterator, context) {
for (var i = 0; i < n; i++) iterator.call(context, i);
};
// Escape a string for HTML interpolation.
_.escape = function(string) {
return (''+string).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
};
// Add your own custom functions to the Underscore object, ensuring that
// they're correctly added to the OOP wrapper as well.
_.mixin = function(obj) {
each(_.functions(obj), function(name){
addToWrapper(name, _[name] = obj[name]);
});
};
// Generate a unique integer id (unique within the entire client session).
// Useful for temporary DOM ids.
var idCounter = 0;
_.uniqueId = function(prefix) {
var id = idCounter++;
return prefix ? prefix + id : id;
};
// By default, Underscore uses ERB-style template delimiters, change the
// following template settings to use alternative delimiters.
_.templateSettings = {
evaluate : /<%([\s\S]+?)%>/g,
interpolate : /<%=([\s\S]+?)%>/g,
escape : /<%-([\s\S]+?)%>/g
};
// When customizing `templateSettings`, if you don't want to define an
// interpolation, evaluation or escaping regex, we need one that is
// guaranteed not to match.
var noMatch = /.^/;
// Within an interpolation, evaluation, or escaping, remove HTML escaping
// that had been previously added.
var unescape = function(code) {
return code.replace(/\\\\/g, '\\').replace(/\\'/g, "'");
};
// JavaScript micro-templating, similar to John Resig's implementation.
// Underscore templating handles arbitrary delimiters, preserves whitespace,
// and correctly escapes quotes within interpolated code.
_.template = function(str, data) {
var c = _.templateSettings;
var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
'with(obj||{}){__p.push(\'' +
str.replace(/\\/g, '\\\\')
.replace(/'/g, "\\'")
.replace(c.escape || noMatch, function(match, code) {
return "',_.escape(" + unescape(code) + "),'";
})
.replace(c.interpolate || noMatch, function(match, code) {
return "'," + unescape(code) + ",'";
})
.replace(c.evaluate || noMatch, function(match, code) {
return "');" + unescape(code).replace(/[\r\n\t]/g, ' ') + ";__p.push('";
})
.replace(/\r/g, '\\r')
.replace(/\n/g, '\\n')
.replace(/\t/g, '\\t')
+ "');}return __p.join('');";
var func = new Function('obj', '_', tmpl);
if (data) return func(data, _);
return function(data) {
return func.call(this, data, _);
};
};
// Add a "chain" function, which will delegate to the wrapper.
_.chain = function(obj) {
return _(obj).chain();
};
// The OOP Wrapper
// ---------------
// If Underscore is called as a function, it returns a wrapped object that
// can be used OO-style. This wrapper holds altered versions of all the
// underscore functions. Wrapped objects may be chained.
var wrapper = function(obj) { this._wrapped = obj; };
// Expose `wrapper.prototype` as `_.prototype`
_.prototype = wrapper.prototype;
// Helper function to continue chaining intermediate results.
var result = function(obj, chain) {
return chain ? _(obj).chain() : obj;
};
// A method to easily add functions to the OOP wrapper.
var addToWrapper = function(name, func) {
wrapper.prototype[name] = function() {
var args = slice.call(arguments);
unshift.call(args, this._wrapped);
return result(func.apply(_, args), this._chain);
};
};
// Add all of the Underscore functions to the wrapper object.
_.mixin(_);
// Add all mutator Array functions to the wrapper.
each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
var method = ArrayProto[name];
wrapper.prototype[name] = function() {
var wrapped = this._wrapped;
method.apply(wrapped, arguments);
var length = wrapped.length;
if ((name == 'shift' || name == 'splice') && length === 0) delete wrapped[0];
return result(wrapped, this._chain);
};
});
// Add all accessor Array functions to the wrapper.
each(['concat', 'join', 'slice'], function(name) {
var method = ArrayProto[name];
wrapper.prototype[name] = function() {
return result(method.apply(this._wrapped, arguments), this._chain);
};
});
// Start chaining a wrapped Underscore object.
wrapper.prototype.chain = function() {
this._chain = true;
return this;
};
// Extracts the result from a wrapped and chained object.
wrapper.prototype.value = function() {
return this._wrapped;
};
}).call(this);

4
src/static/js/undomodule.js
View File

@ -21,7 +21,7 @@
*/
var Changeset = require('./Changeset');
var extend = require('./ace2_common').extend;
var _ = require('./underscore');
var undoModule = (function()
{
@ -52,7 +52,7 @@ var undoModule = (function()
function pushEvent(event)
{
var e = extend(
var e = _.extend(
{}, event);
e.elementType = UNDOABLE_EVENT;
stackElements.push(e);