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Merge pull request #4662 from Raven24/update_underscore-backbone

Browse source 
update backbone.js and underscore.js
This commit is contained in:
Jonne Haß 2014-01-17 03:24:46 -08:00
commit dae69f9558
23 changed files with 147 additions and 2526 deletions
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1
Changelog.md
View file

@ -79,6 +79,7 @@ For more details see https://wiki.diasporafoundation.org/Updating
* Added a statistics route with general pod information, and if enabled in pod settings, total user, half year/monthly active users and local post counts [#4602](https://github.com/diaspora/diaspora/pull/4602)
* Add indication about markdown formatting in the publisher [#4589](https://github.com/diaspora/diaspora/pull/4589)
* Add captcha to signup form [#4659](https://github.com/diaspora/diaspora/pull/4659)
* Update Underscore.js 1.3.1 to 1.5.2, update Backbone.js 0.9.2 to 1.1.0 [#4662](https://github.com/diaspora/diaspora/pull/4662)
## Gem updates
* selenium-webdriver 2.34.0 -> 2.39.0

1
Gemfile
View file

@ -125,6 +125,7 @@ group :assets do
# JavaScript
gem 'backbone-on-rails', '1.1.0'
gem 'handlebars_assets', '0.12.0'
gem 'jquery-rails', '2.1.4'

12
Gemfile.lock
View file

@ -43,6 +43,11 @@ GEM
fog (>= 1.8.0)
atomic (1.1.14)
bcrypt-ruby (3.1.2)
backbone-on-rails (1.1.0.0)
eco
ejs
jquery-rails
rails (>= 3.1)
bootstrap-sass (2.2.2.0)
sass (~> 3.2)
builder (3.0.4)
@ -99,6 +104,12 @@ GEM
thread_safe (~> 0.1)
warden (~> 1.2.3)
diff-lcs (1.2.5)
eco (1.0.0)
coffee-script
eco-source
execjs
eco-source (1.1.0.rc.1)
ejs (1.1.1)
entypo-rails (2.0.2)
railties (>= 3.1, <= 5)
erubis (2.7.0)
@ -436,6 +447,7 @@ DEPENDENCIES
acts_as_api (= 0.4.2)
addressable (= 2.3.5)
asset_sync (= 1.0.0)
backbone-on-rails (= 1.1.0)
bootstrap-sass (= 2.2.2.0)
capybara (= 2.2.1)
carrierwave (= 0.9.0)

13
app/assets/javascripts/app/collections/comments.js
View file

@ -1,21 +1,18 @@
app.collections.Comments = Backbone.Collection.extend({
model: app.models.Comment,
url : function(){
return this.post.url() + "/comments"
},
url: function() { return _.result(this.post, 'url') + '/comments'; },
initialize : function(models, options) {
this.post = options.post
this.post = options.post;
},
make : function(text){
var self = this
var self = this;
var comment = new app.models.Comment({text: text })
var comment = new app.models.Comment({text: text });
var deferred = comment.save({}, {
url : self.url(),
url: '/posts/'+this.post.id+'/comments',
success: function() {
comment.set({author: app.currentUser.toJSON(), parent: self.post })
self.add(comment)

12
app/assets/javascripts/app/models/stream.js
View file

@ -16,16 +16,16 @@ app.models.Stream = Backbone.Collection.extend({
},
fetch: function() {
if(this.isFetching()){ return false }
var url = this.url()
if( this.isFetching() ) return false;
var url = this.url();
this.deferred = this.items.fetch({
add : true,
remove : false,
url : url
}).done(_.bind(this.triggerFetchedEvents, this))
},
isFetching : function(){
return this.deferred && this.deferred.state() == "pending"
isFetching : function() {
return (this.deferred && this.deferred.state() == "pending");
},
triggerFetchedEvents : function(resp){
@ -56,7 +56,7 @@ app.models.Stream = Backbone.Collection.extend({
/* This function is for adding a large number of posts one by one.
* Mainly used by backbone when loading posts from the server
*
*
* After adding the posts, you have to trigger "fetched" on the
* stream for the changes to take effect in the infinite stream view
*/

21
app/assets/javascripts/app/views.js
View file

@ -9,11 +9,6 @@ app.views.Base = Backbone.View.extend({
},
setupRenderEvents : function(){
if(this.model) {
//this should be in streamobjects view
this.model.bind('remove', this.remove, this);
}
// this line is too generic. we usually only want to re-render on
// feedback changes as the post content, author, and time do not change.
//
@ -88,9 +83,21 @@ app.views.Base = Backbone.View.extend({
destroyModel: function(evt) {
evt && evt.preventDefault();
var self = this;
var url = this.model.urlRoot + '/' + this.model.id;
if (confirm(Diaspora.I18n.t("confirm_dialog"))) {
this.model.destroy();
this.remove();
this.model.destroy({ url: url })
.done(function() {
self.remove();
})
.fail(function() {
var flash = new Diaspora.Widgets.FlashMessages;
flash.render({
success: false,
notice: Diaspora.I18n.t('failed_to_remove')
});
});
}
}
});

29
app/assets/javascripts/app/views/infinite_stream_view.js
View file

@ -9,8 +9,7 @@
app.views.InfScroll = app.views.Base.extend({
setupInfiniteScroll : function() {
this.postViews = this.postViews || [];
this.appendedPosts = [];
this.prependedPosts = [];
this._resetPostFragments();
this.bind("loadMore", this.fetchAndshowLoader, this);
this.stream.bind("fetched", this.finishedLoading, this);
@ -22,6 +21,11 @@ app.views.InfScroll = app.views.Base.extend({
$(window).scroll(throttledScroll);
},
_resetPostFragments: function() {
this.appendedPosts = document.createDocumentFragment();
this.prependedPosts = document.createDocumentFragment();
},
postRenderTemplate : function() {
if(this.stream.isFetching()) { this.showLoader() }
},
@ -29,6 +33,7 @@ app.views.InfScroll = app.views.Base.extend({
createPostView : function(post){
var postView = new this.postClass({ model: post, stream: this.stream });
if (this.collection.at(0).id == post.id) {
// post is first in collection - insert view at top of the list
this.postViews.unshift(postView);
} else {
this.postViews.push(postView);
@ -36,12 +41,13 @@ app.views.InfScroll = app.views.Base.extend({
return postView;
},
// called for every item inserted in this.collection
addPostView : function(post) {
var el = this.createPostView(post).render().el;
if (this.collection.at(0).id == post.id) {
this.prependedPosts.unshift(el);
this.prependedPosts.insertBefore(el, this.prependedPosts.firstChild);
} else {
this.appendedPosts.push(el);
this.appendedPosts.appendChild(el);
}
},
@ -55,15 +61,16 @@ app.views.InfScroll = app.views.Base.extend({
renderInitialPosts : function(){
this.$el.empty();
var els = [];
var els = document.createDocumentFragment();
this.stream.items.each(_.bind(function(post){
els.push(this.createPostView(post).render().el);
els.appendChild(this.createPostView(post).render().el);
}, this))
this.$el.append(els);
this.$el.html(els);
},
fetchAndshowLoader : function(){
if(this.stream.isFetching()) { return false }
if( this.stream.isFetching() ) return false;
this.stream.fetch();
this.showLoader();
},
@ -73,11 +80,9 @@ app.views.InfScroll = app.views.Base.extend({
},
finishedAdding: function() {
var el = $('<span></span>');
this.$el.prepend(this.prependedPosts);
this.$el.append(this.appendedPosts);
this.appendedPosts = [];
this.prependedPosts = [];
this._resetPostFragments();
},
finishedLoading: function() {
@ -96,7 +101,7 @@ app.views.InfScroll = app.views.Base.extend({
, bufferPx = 500;
if(distFromBottom < bufferPx) {
this.trigger("loadMore")
this.trigger("loadMore");
}
}
});

8
app/assets/javascripts/app/views/publisher/aspect_selector_view.js
View file

@ -12,6 +12,10 @@ app.views.PublisherAspectSelector = Backbone.View.extend({
"click .dropdown_list > li": "toggleAspect"
},
initialize: function(opts) {
this.form = opts.form;
},
// event handler for aspect selection
toggleAspect: function(evt) {
var el = $(evt.target);
@ -53,7 +57,7 @@ app.views.PublisherAspectSelector = Backbone.View.extend({
var self = this;
// remove previous selection
this.options.form.find('input[name="aspect_ids[]"]').remove();
this.form.find('input[name="aspect_ids[]"]').remove();
// create fields for current selection
this.$('.dropdown_list li.selected').each(function() {
@ -80,7 +84,7 @@ app.views.PublisherAspectSelector = Backbone.View.extend({
_addHiddenAspectInput: function(id) {
var uid = _.uniqueId('aspect_ids_');
this.options.form.append(
this.form.append(
'<input id="'+uid+'" name="aspect_ids[]" type="hidden" value="'+id+'">'
);
}

16
app/assets/javascripts/app/views/publisher/getting_started_view.js
View file

@ -8,23 +8,29 @@
// for describing their use to new users.
app.views.PublisherGettingStarted = Backbone.View.extend({
initialize: function(opts) {
this.el_first_msg = opts.el_first_msg;
this.el_visibility = opts.el_visibility;
this.el_stream = opts.el_stream;
},
// initiate all the popover message boxes
show: function() {
this._addPopover(this.options.el_first_msg, {
this._addPopover(this.el_first_msg, {
trigger: 'manual',
offset: 30,
id: 'first_message_explain',
placement: 'right',
html: true
}, 600);
this._addPopover(this.options.el_visibility, {
this._addPopover(this.el_visibility, {
trigger: 'manual',
offset: 10,
id: 'message_visibility_explain',
placement: 'bottom',
html: true
}, 1000);
this._addPopover(this.options.el_stream, {
this._addPopover(this.el_stream, {
trigger: 'manual',
offset: -5,
id: 'stream_explain',
@ -34,8 +40,8 @@ app.views.PublisherGettingStarted = Backbone.View.extend({
// hide some popovers when a post is created
this.$('.button.creation').click(function() {
this.options.el_visibility.popover('hide');
this.options.el_first_msg.popover('hide');
this.el_visibility.popover('hide');
this.el_first_msg.popover('hide');
});
},

13
app/assets/javascripts/app/views/publisher/services_view.js
View file

@ -13,7 +13,10 @@ app.views.PublisherServices = Backbone.View.extend({
tooltipSelector: '.service_icon',
initialize: function() {
initialize: function(opts) {
this.input = opts.input;
this.form = opts.form;
// init tooltip plugin
this.$(this.tooltipSelector).tooltip();
},
@ -32,7 +35,7 @@ app.views.PublisherServices = Backbone.View.extend({
// keep track of character count
_createCounter: function() {
// remove any obsolete counters
this.options.input.siblings('.counter').remove();
this.input.siblings('.counter').remove();
// create new counter
var min = 40000;
@ -42,18 +45,18 @@ app.views.PublisherServices = Backbone.View.extend({
var num = parseInt($(value).attr('maxchar'));
if (min > num) { min = num; }
});
this.options.input.charCount({allowed: min, warning: min/10 });
this.input.charCount({allowed: min, warning: min/10 });
}
},
// add or remove the input containing the selected service
_toggleServiceField: function(provider) {
var hidden_field = this.options.form.find('input[name="services[]"][value="'+provider+'"]');
var hidden_field = this.form.find('input[name="services[]"][value="'+provider+'"]');
if(hidden_field.length > 0){
hidden_field.remove();
} else {
var uid = _.uniqueId('services_');
this.options.form.append(
this.form.append(
'<input id="'+uid+'" name="services[]" type="hidden" value="'+provider+'">');
}
}

18
app/assets/javascripts/app/views/publisher/uploader_view.js
View file

@ -8,7 +8,9 @@ app.views.PublisherUploader = Backbone.View.extend({
allowedExtensions: ['jpg', 'jpeg', 'png', 'gif', 'tif', 'tiff'],
sizeLimit: 4194304, // bytes
initialize: function() {
initialize: function(opts) {
this.publisher = opts.publisher;
this.uploader = new qq.FileUploaderBasic({
element: this.el,
button: this.el,
@ -31,9 +33,9 @@ app.views.PublisherUploader = Backbone.View.extend({
});
this.el_info = $('<div id="fileInfo" />');
this.options.publisher.el_wrapper.before(this.el_info);
this.publisher.el_wrapper.before(this.el_info);
this.options.publisher.el_photozone.on('click', '.x', _.bind(this._removePhoto, this));
this.publisher.el_photozone.on('click', '.x', _.bind(this._removePhoto, this));
},
progressHandler: function(id, fileName, loaded, total) {
@ -48,7 +50,7 @@ app.views.PublisherUploader = Backbone.View.extend({
// add photo placeholders to the publisher to indicate an upload in progress
_addPhotoPlaceholder: function() {
var publisher = this.options.publisher;
var publisher = this.publisher;
publisher.setButtonsEnabled(false);
publisher.el_wrapper.addClass('with_attachments');
@ -78,7 +80,7 @@ app.views.PublisherUploader = Backbone.View.extend({
// replace the first photo placeholder with the finished uploaded image and
// add the id to the publishers form
_addFinishedPhoto: function(id, url) {
var publisher = this.options.publisher;
var publisher = this.publisher;
// add form input element
publisher.$('.content_creation form').append(
@ -103,7 +105,7 @@ app.views.PublisherUploader = Backbone.View.extend({
},
_cancelPhotoUpload: function() {
var publisher = this.options.publisher;
var publisher = this.publisher;
var placeholder = publisher.el_photozone.find('li.loading').first();
placeholder
.removeClass('loading')
@ -125,9 +127,9 @@ app.views.PublisherUploader = Backbone.View.extend({
$.when(photo.fadeOut(400)).then(function(){
photo.remove();
if( self.options.publisher.$('.publisher_photo').length == 0 ) {
if( self.publisher.$('.publisher_photo').length == 0 ) {
// no more photos left...
self.options.publisher.el_wrapper.removeClass('with_attachments');
self.publisher.el_wrapper.removeClass('with_attachments');
}
self.trigger('change');

6
app/assets/javascripts/app/views/publisher_view.js
View file

@ -25,7 +25,9 @@ app.views.Publisher = Backbone.View.extend({
"keypress #location_address" : "avoidEnter"
},
initialize : function(){
initialize : function(opts){
this.standalone = opts ? opts.standalone : false;
// init shortcut references to the various elements
this.el_input = this.$('#status_message_fake_text');
this.el_hiddenInput = this.$('#status_message_text');
@ -47,7 +49,7 @@ app.views.Publisher = Backbone.View.extend({
// hide close and preview buttons, in case publisher is standalone
// (e.g. bookmarklet, mentions popup)
if( this.options.standalone ) {
if( this.standalone ) {
this.$('#hide_publisher').hide();
this.el_preview.hide();
}

3
app/assets/javascripts/app/views/stream_post_views.js
View file

@ -25,8 +25,7 @@ app.views.StreamPost = app.views.Post.extend({
tooltipSelector : ".timeago, .post_scope, .block_user, .delete",
initialize : function(){
this.model.bind('remove', this.remove, this);
this.model.on('remove', this.remove, this);
//subviews
this.commentStreamView = new app.views.CommentStream({model : this.model});
this.oEmbedView = new app.views.OEmbed({model : this.model});

1
config/locales/javascript/javascript.en.yml
View file

@ -60,6 +60,7 @@ en:
show_more: "show more"
failed_to_like: "Failed to like!"
failed_to_post_message: "Failed to post message!"
failed_to_remove: "Failed to remove the entry!"
comments:
show: "show all comments"
hide: "hide comments"

7
features/step_definitions/custom_web_steps.rb
View file

@ -105,9 +105,10 @@ And /^I hover over the "([^"]+)"$/ do |element|
end
When /^I prepare the deletion of the first post$/ do
within('.stream_element', match: :first) do
find('.controls').hover
find('.remove_post').click
within(find('.stream .stream_element')) do
ctrl = find('.controls')
ctrl.hover
ctrl.find('.remove_post').click
end
end

4
features/step_definitions/web_steps.rb
View file

@ -20,11 +20,11 @@ end
World(WithinHelpers)
Given /^(?:|I )am on (.+)$/ do |page_name|
visit path_to(page_name)
navigate_to(page_name)
end
When /^(?:|I )go to (.+)$/ do |page_name|
visit path_to(page_name)
navigate_to(page_name)
end
When /^(?:|I )press "([^"]*)"(?: within "([^"]*)")?$/ do |button, selector|

19
features/support/paths.rb
View file

@ -26,7 +26,11 @@ module NavigationHelpers
when /^the requestors profile$/
person_path(Request.where(:recipient_id => @me.person.id).first.sender)
when /^"([^\"]*)"'s page$/
person_path(User.find_by_email($1).person)
p = User.find_by_email($1).person
{ path: person_path(p),
# '.diaspora_handle' on desktop, '.description' on mobile
special_elem: { selector: '.diaspora_handle, .description', text: p.diaspora_handle }
}
when /^my account settings page$/
edit_user_path
when /^my new profile page$/
@ -46,10 +50,21 @@ module NavigationHelpers
path_to "the new user session page"
end
def post_path_by_content text
def post_path_by_content(text)
p = Post.find_by_text(text)
post_path(p)
end
def navigate_to(page_name)
path = path_to(page_name)
unless path.is_a?(Hash)
visit(path)
else
visit(path[:path])
await_elem = path[:special_elem]
find(await_elem.delete(:selector), await_elem)
end
end
end
World(NavigationHelpers)

4
spec/javascripts/app/models/stream_spec.js
View file

@ -16,7 +16,7 @@ describe("app.models.Stream", function() {
it("it fetches posts from the window's url, and ads them to the collection", function() {
this.stream.fetch()
expect(this.stream.items.fetch).toHaveBeenCalledWith({ add : true, url : this.expectedPath});
expect(this.stream.items.fetch).toHaveBeenCalledWith({ remove: false, url: this.expectedPath});
});
it("returns the json path with max_time if the collection has models", function() {
@ -25,7 +25,7 @@ describe("app.models.Stream", function() {
this.stream.add(post);
this.stream.fetch()
expect(this.stream.items.fetch).toHaveBeenCalledWith({ add : true, url : this.expectedPath + "?max_time=1234"});
expect(this.stream.items.fetch).toHaveBeenCalledWith({ remove: false, url: this.expectedPath + "?max_time=1234"});
});
it("triggers fetched on the stream when it is fetched", function(){

42
spec/javascripts/app/router_spec.js
View file

@ -34,42 +34,38 @@ describe('app.Router', function () {
});
describe("when routing to /stream and hiding inactive stream lists", function() {
var router;
var aspects;
var tagFollowings;
beforeEach(function() {
router = new app.Router();
});
it('calls hideInactiveStreamLists', function () {
var hideInactiveStreamLists = spyOn(app.router, 'hideInactiveStreamLists').andCallThrough();
spyOn(window.history, 'pushState').andCallFake(function (data, title, url) {
var route = app.router._routeToRegExp("stream");
var args = app.router._extractParameters(route, url.replace(/^\//, ""));
app.router.stream(args[0]);
});
app.router.navigate('/stream');
var hideInactiveStreamLists = spyOn(router, 'hideInactiveStreamLists').andCallThrough();
router.stream();
expect(hideInactiveStreamLists).toHaveBeenCalled();
});
it('hides the aspects list', function(){
var aspects = new app.collections.Aspects([{ name: 'Work', selected: true }]);
aspects = new app.collections.Aspects([{ name: 'Work', selected: true }]);
var aspectsListView = new app.views.AspectsList({collection: aspects});
var hideAspectsList = spyOn(aspectsListView, 'hideAspectsList').andCallThrough();
app.router.aspects_list = aspectsListView;
spyOn(window.history, 'pushState').andCallFake(function (data, title, url) {
var route = app.router._routeToRegExp("stream");
var args = app.router._extractParameters(route, url.replace(/^\//, ""));
app.router.stream(args[0]);
});
app.router.navigate('/stream');
router.aspects_list = aspectsListView;
router.stream();
expect(hideAspectsList).toHaveBeenCalled();
});
it('hides the followed tags view', function(){
var tagFollowings = new app.collections.TagFollowings();
tagFollowings = new app.collections.TagFollowings();
var followedTagsView = new app.views.TagFollowingList({collection: tagFollowings});
var hideFollowedTags = spyOn(followedTagsView, 'hideFollowedTags').andCallThrough();
app.router.followedTagsView = followedTagsView;
spyOn(window.history, 'pushState').andCallFake(function (data, title, url) {
var route = app.router._routeToRegExp("stream");
var args = app.router._extractParameters(route, url.replace(/^\//, ""));
app.router.stream(args[0]);
});
app.router.navigate('/stream');
router.followedTagsView = followedTagsView;
router.stream();
expect(hideFollowedTags).toHaveBeenCalled();
});
});

9
spec/javascripts/app/views/comment_stream_view_spec.js
View file

@ -81,11 +81,10 @@ describe("app.views.CommentStream", function(){
describe("appendComment", function(){
it("appends this.model as 'parent' to the comment", function(){
var comment = new app.models.Comment(factory.comment())
spyOn(comment, "set")
this.view.appendComment(comment)
expect(comment.set).toHaveBeenCalled()
var comment = factory.comment();
spyOn(comment, "set");
this.view.appendComment(comment);
expect(comment.set).toHaveBeenCalled();
});
});

4
spec/javascripts/bookmarklet-spec.js
View file

@ -15,7 +15,7 @@ describe("bookmarklet", function() {
});
it('verifies we are using the bookmarklet', function(){
expect(app.publisher.options.standalone).toBeTruthy();
expect(app.publisher.standalone).toBeTruthy();
expect(app.publisher.$('#hide_publisher').is(':visible')).toBeFalsy();
});
});
@ -37,7 +37,7 @@ describe("bookmarklet", function() {
});
});
});
describe("modified prefilled bookmarklet", function(){
it('allows changing of post content', function(){
spec.loadFixture('prefilled_bookmarklet');

1431
vendor/assets/javascripts/backbone.js vendored
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File diff suppressed because it is too large Load diff

999
vendor/assets/javascripts/underscore.js vendored
View file

@ -1,999 +0,0 @@
// 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);