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Commit 7405c80f authored by Aaron Boushley's avatar Aaron Boushley
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Upgraded libs. Resolving other issues. 

Bolding items left.
Trim todo input and prevent whitespace only todos.
Change content to title in model.
Double click on item div instead of just title.
Removed unused jslitmus.js.
parent de0428e0
Hide whitespace changes
Inline Side-by-side
Showing with 862 additions and 1185 deletions
architecture-examples/backbone/index.html
View file @ 7405c80f
......@@ -36,7 +36,7 @@
<script src="js/libs/json2.js"></script>
<script src="js/libs/jquery-1.7.1.min.js"></script>
<script src="js/libs/underscore-1.1.6.js"></script>
<script src="js/libs/underscore.js"></script>
<script src="js/libs/backbone.js"></script>
<script src="js/libs/backbone-localstorage.js"></script>
<script src="js/app.js"></script>
......@@ -46,17 +46,17 @@
<script type="text/template" id="item-template">
<div class="view">
<input class="toggle" type="checkbox" <%= done ? 'checked="checked"' : '' %> />
<label><%= content %></label>
<label><%= title %></label>
<a class="destroy"></a>
</div>
<input class="edit" type="text" value="<%= content %>" />
<input class="edit" type="text" value="<%= title %>" />
</script>
<script type="text/template" id="stats-template">
<% if (done) { %>
<a id="clear-completed">Clear <%= done %> completed <%= done == 1 ? 'item' : 'items' %></a>
<% } %>
<div class="todo-count"><%= remaining %> <%= remaining == 1 ? 'item' : 'items' %> left.</div>
<div class="todo-count"><b><%= remaining %></b> <%= remaining == 1 ? 'item' : 'items' %> left</div>
</script>
</body>
......
architecture-examples/backbone/js/app.js
View file @ 7405c80f
......@@ -9,19 +9,19 @@ $(function(){
// Todo Model
// ----------
// Our basic **Todo** model has `content`, `order`, and `done` attributes.
// Our basic **Todo** model has `title`, `order`, and `done` attributes.
var Todo = Backbone.Model.extend({
// Default attributes for the todo.
defaults: {
content: "empty todo...",
title: "empty todo...",
done: false
},
// Ensure that each todo created has `content`.
// Ensure that each todo created has `title`.
initialize: function() {
if (!this.get("content")) {
this.set({"content": this.defaults.content});
if (!this.get("title")) {
this.set({"title": this.defaults.title});
}
},
......@@ -92,7 +92,7 @@ $(function(){
// The DOM events specific to an item.
events: {
"click .toggle" : "toggleDone",
"dblclick label" : "edit",
"dblclick .view" : "edit",
"click a.destroy" : "clear",
"keypress .edit" : "updateOnEnter",
"blur .edit" : "close"
......@@ -106,7 +106,7 @@ $(function(){
this.model.bind('destroy', this.remove, this);
},
// Re-render the contents of the todo item.
// Re-render the titles of the todo item.
render: function() {
var $el = $(this.el);
$el.html(this.template(this.model.toJSON()));
......@@ -129,7 +129,7 @@ $(function(){
// Close the `"editing"` mode, saving changes to the todo.
close: function() {
this.model.save({content: this.input.val()});
this.model.save({title: this.input.val()});
$(this.el).removeClass("editing");
},
......@@ -220,9 +220,9 @@ $(function(){
// Generate the attributes for a new Todo item.
newAttributes: function() {
return {
content: this.input.val(),
order: Todos.nextOrder(),
done: false
title: this.input.val().trim(),
order: Todos.nextOrder(),
done: false
};
},
......@@ -230,6 +230,8 @@ $(function(){
// persisting it to *localStorage*.
createOnEnter: function(e) {
if (e.keyCode != 13) return;
if (!this.input.val().trim()) return;
Todos.create(this.newAttributes());
this.input.val('');
},
......
architecture-examples/backbone/js/libs/backbone.js
View file @ 7405c80f
// Backbone.js 0.5.3
// (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
// Backbone.js 0.9.1
// (c) 2010-2012 Jeremy Ashkenas, DocumentCloud Inc.
// Backbone may be freely distributed under the MIT license.
// For all details and documentation:
// http://documentcloud.github.com/backbone
// http://backbonejs.org
(function(){
// Initial Setup
// -------------
// Save a reference to the global object.
// Save a reference to the global object (`window` in the browser, `global`
// on the server).
var root = this;
// Save the previous value of the `Backbone` variable.
// Save the previous value of the `Backbone` variable, so that it can be
// restored later on, if `noConflict` is used.
var previousBackbone = root.Backbone;
// Create a local reference to slice/splice.
var slice = Array.prototype.slice;
var splice = Array.prototype.splice;
// The top-level namespace. All public Backbone classes and modules will
// be attached to this. Exported for both CommonJS and the browser.
var Backbone;
......@@ -25,14 +32,23 @@
}
// Current version of the library. Keep in sync with `package.json`.
Backbone.VERSION = '0.5.3';
Backbone.VERSION = '0.9.1';
// Require Underscore, if we're on the server, and it's not already present.
var _ = root._;
if (!_ && (typeof require !== 'undefined')) _ = require('underscore')._;
// For Backbone's purposes, jQuery or Zepto owns the `$` variable.
var $ = root.jQuery || root.Zepto;
if (!_ && (typeof require !== 'undefined')) _ = require('underscore');
// For Backbone's purposes, jQuery, Zepto, or Ender owns the `$` variable.
var $ = root.jQuery || root.Zepto || root.ender;
// Set the JavaScript library that will be used for DOM manipulation and
// Ajax calls (a.k.a. the `$` variable). By default Backbone will use: jQuery,
// Zepto, or Ender; but the `setDomLibrary()` method lets you inject an
// alternate JavaScript library (or a mock library for testing your views
// outside of a browser).
Backbone.setDomLibrary = function(lib) {
$ = lib;
};
// Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
// to its previous owner. Returns a reference to this Backbone object.
......@@ -41,9 +57,9 @@
return this;
};
// Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option will
// fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and set a
// `X-Http-Method-Override` header.
// Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option
// will fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and
// set a `X-Http-Method-Override` header.
Backbone.emulateHTTP = false;
// Turn on `emulateJSON` to support legacy servers that can't deal with direct
......@@ -56,43 +72,53 @@
// -----------------
// A module that can be mixed in to *any object* in order to provide it with
// custom events. You may `bind` or `unbind` a callback function to an event;
// `trigger`-ing an event fires all callbacks in succession.
// custom events. You may bind with `on` or remove with `off` callback functions
// to an event; trigger`-ing an event fires all callbacks in succession.
//
// var object = {};
// _.extend(object, Backbone.Events);
// object.bind('expand', function(){ alert('expanded'); });
// object.on('expand', function(){ alert('expanded'); });
// object.trigger('expand');
//
Backbone.Events = {
// Bind an event, specified by a string name, `ev`, to a `callback` function.
// Passing `"all"` will bind the callback to all events fired.
bind : function(ev, callback, context) {
// Bind an event, specified by a string name, `ev`, to a `callback`
// function. Passing `"all"` will bind the callback to all events fired.
on: function(events, callback, context) {
var ev;
events = events.split(/\s+/);
var calls = this._callbacks || (this._callbacks = {});
var list = calls[ev] || (calls[ev] = []);
list.push([callback, context]);
while (ev = events.shift()) {
// Create an immutable callback list, allowing traversal during
// modification. The tail is an empty object that will always be used
// as the next node.
var list = calls[ev] || (calls[ev] = {});
var tail = list.tail || (list.tail = list.next = {});
tail.callback = callback;
tail.context = context;
list.tail = tail.next = {};
}
return this;
},
// Remove one or many callbacks. If `callback` is null, removes all
// callbacks for the event. If `ev` is null, removes all bound callbacks
// for all events.
unbind : function(ev, callback) {
var calls;
if (!ev) {
this._callbacks = {};
// Remove one or many callbacks. If `context` is null, removes all callbacks
// with that function. If `callback` is null, removes all callbacks for the
// event. If `ev` is null, removes all bound callbacks for all events.
off: function(events, callback, context) {
var ev, calls, node;
if (!events) {
delete this._callbacks;
} else if (calls = this._callbacks) {
if (!callback) {
calls[ev] = [];
} else {
var list = calls[ev];
if (!list) return this;
for (var i = 0, l = list.length; i < l; i++) {
if (list[i] && callback === list[i][0]) {
list[i] = null;
break;
}
events = events.split(/\s+/);
while (ev = events.shift()) {
node = calls[ev];
delete calls[ev];
if (!callback || !node) continue;
// Create a new list, omitting the indicated event/context pairs.
while ((node = node.next) && node.next) {
if (node.callback === callback &&
(!context || node.context === context)) continue;
this.on(ev, node.callback, node.context);
}
}
}
......@@ -102,21 +128,24 @@
// Trigger an event, firing all bound callbacks. Callbacks are passed the
// same arguments as `trigger` is, apart from the event name.
// Listening for `"all"` passes the true event name as the first argument.
trigger : function(eventName) {
var list, calls, ev, callback, args;
var both = 2;
trigger: function(events) {
var event, node, calls, tail, args, all, rest;
if (!(calls = this._callbacks)) return this;
while (both--) {
ev = both ? eventName : 'all';
if (list = calls[ev]) {
for (var i = 0, l = list.length; i < l; i++) {
if (!(callback = list[i])) {
list.splice(i, 1); i--; l--;
} else {
args = both ? Array.prototype.slice.call(arguments, 1) : arguments;
callback[0].apply(callback[1] || this, args);
}
}
all = calls['all'];
(events = events.split(/\s+/)).push(null);
// Save references to the current heads & tails.
while (event = events.shift()) {
if (all) events.push({next: all.next, tail: all.tail, event: event});
if (!(node = calls[event])) continue;
events.push({next: node.next, tail: node.tail});
}
// Traverse each list, stopping when the saved tail is reached.
rest = slice.call(arguments, 1);
while (node = events.pop()) {
tail = node.tail;
args = node.event ? [node.event].concat(rest) : rest;
while ((node = node.next) !== tail) {
node.callback.apply(node.context || this, args);
}
}
return this;
......@@ -124,6 +153,10 @@
};
// Aliases for backwards compatibility.
Backbone.Events.bind = Backbone.Events.on;
Backbone.Events.unbind = Backbone.Events.off;
// Backbone.Model
// --------------
......@@ -132,278 +165,306 @@
Backbone.Model = function(attributes, options) {
var defaults;
attributes || (attributes = {});
if (defaults = this.defaults) {
if (_.isFunction(defaults)) defaults = defaults.call(this);
if (options && options.parse) attributes = this.parse(attributes);
if (defaults = getValue(this, 'defaults')) {
attributes = _.extend({}, defaults, attributes);
}
if (options && options.collection) this.collection = options.collection;
this.attributes = {};
this._escapedAttributes = {};
this.cid = _.uniqueId('c');
this.set(attributes, {silent : true});
this._changed = false;
if (!this.set(attributes, {silent: true})) {
throw new Error("Can't create an invalid model");
}
delete this._changed;
this._previousAttributes = _.clone(this.attributes);
if (options && options.collection) this.collection = options.collection;
this.initialize(attributes, options);
this.initialize.apply(this, arguments);
};
// Attach all inheritable methods to the Model prototype.
_.extend(Backbone.Model.prototype, Backbone.Events, {
// A snapshot of the model's previous attributes, taken immediately
// after the last `"change"` event was fired.
_previousAttributes : null,
// Has the item been changed since the last `"change"` event?
_changed : false,
// The default name for the JSON `id` attribute is `"id"`. MongoDB and
// CouchDB users may want to set this to `"_id"`.
idAttribute : 'id',
idAttribute: 'id',
// Initialize is an empty function by default. Override it with your own
// initialization logic.
initialize : function(){},
initialize: function(){},
// Return a copy of the model's `attributes` object.
toJSON : function() {
toJSON: function() {
return _.clone(this.attributes);
},
// Get the value of an attribute.
get : function(attr) {
get: function(attr) {
return this.attributes[attr];
},
// Get the HTML-escaped value of an attribute.
escape : function(attr) {
escape: function(attr) {
var html;
if (html = this._escapedAttributes[attr]) return html;
var val = this.attributes[attr];
return this._escapedAttributes[attr] = escapeHTML(val == null ? '' : '' + val);
return this._escapedAttributes[attr] = _.escape(val == null ? '' : '' + val);
},
// Returns `true` if the attribute contains a value that is not null
// or undefined.
has : function(attr) {
has: function(attr) {
return this.attributes[attr] != null;
},
// Set a hash of model attributes on the object, firing `"change"` unless you
// choose to silence it.
set : function(attrs, options) {
// Set a hash of model attributes on the object, firing `"change"` unless
// you choose to silence it.
set: function(key, value, options) {
var attrs, attr, val;
if (_.isObject(key) || key == null) {
attrs = key;
options = value;
} else {
attrs = {};
attrs[key] = value;
}
// Extract attributes and options.
options || (options = {});
if (!attrs) return this;
if (attrs.attributes) attrs = attrs.attributes;
var now = this.attributes, escaped = this._escapedAttributes;
if (attrs instanceof Backbone.Model) attrs = attrs.attributes;
if (options.unset) for (attr in attrs) attrs[attr] = void 0;
// Run validation.
if (!options.silent && this.validate && !this._performValidation(attrs, options)) return false;
if (!this._validate(attrs, options)) return false;
// Check for changes of `id`.
if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];
// We're about to start triggering change events.
var alreadyChanging = this._changing;
this._changing = true;
var now = this.attributes;
var escaped = this._escapedAttributes;
var prev = this._previousAttributes || {};
var alreadySetting = this._setting;
this._changed || (this._changed = {});
this._setting = true;
// Update attributes.
for (var attr in attrs) {
var val = attrs[attr];
if (!_.isEqual(now[attr], val)) {
now[attr] = val;
delete escaped[attr];
this._changed = true;
if (!options.silent) this.trigger('change:' + attr, this, val, options);
for (attr in attrs) {
val = attrs[attr];
if (!_.isEqual(now[attr], val)) delete escaped[attr];
options.unset ? delete now[attr] : now[attr] = val;
if (this._changing && !_.isEqual(this._changed[attr], val)) {
this.trigger('change:' + attr, this, val, options);
this._moreChanges = true;
}
delete this._changed[attr];
if (!_.isEqual(prev[attr], val) || (_.has(now, attr) != _.has(prev, attr))) {
this._changed[attr] = val;
}
}
// Fire the `"change"` event, if the model has been changed.
if (!alreadyChanging && !options.silent && this._changed) this.change(options);
this._changing = false;
// Fire the `"change"` events, if the model has been changed.
if (!alreadySetting) {
if (!options.silent && this.hasChanged()) this.change(options);
this._setting = false;
}
return this;
},
// Remove an attribute from the model, firing `"change"` unless you choose
// to silence it. `unset` is a noop if the attribute doesn't exist.
unset : function(attr, options) {
if (!(attr in this.attributes)) return this;
options || (options = {});
var value = this.attributes[attr];
// Run validation.
var validObj = {};
validObj[attr] = void 0;
if (!options.silent && this.validate && !this._performValidation(validObj, options)) return false;
// Remove the attribute.
delete this.attributes[attr];
delete this._escapedAttributes[attr];
if (attr == this.idAttribute) delete this.id;
this._changed = true;
if (!options.silent) {
this.trigger('change:' + attr, this, void 0, options);
this.change(options);
}
return this;
unset: function(attr, options) {
(options || (options = {})).unset = true;
return this.set(attr, null, options);
},
// Clear all attributes on the model, firing `"change"` unless you choose
// to silence it.
clear : function(options) {
options || (options = {});
var attr;
var old = this.attributes;
// Run validation.
var validObj = {};
for (attr in old) validObj[attr] = void 0;
if (!options.silent && this.validate && !this._performValidation(validObj, options)) return false;
this.attributes = {};
this._escapedAttributes = {};
this._changed = true;
if (!options.silent) {
for (attr in old) {
this.trigger('change:' + attr, this, void 0, options);
}
this.change(options);
}
return this;
clear: function(options) {
(options || (options = {})).unset = true;
return this.set(_.clone(this.attributes), options);
},
// Fetch the model from the server. If the server's representation of the
// model differs from its current attributes, they will be overriden,
// triggering a `"change"` event.
fetch : function(options) {
options || (options = {});
fetch: function(options) {
options = options ? _.clone(options) : {};
var model = this;
var success = options.success;
options.success = function(resp, status, xhr) {
if (!model.set(model.parse(resp, xhr), options)) return false;
if (success) success(model, resp);
};
options.error = wrapError(options.error, model, options);
options.error = Backbone.wrapError(options.error, model, options);
return (this.sync || Backbone.sync).call(this, 'read', this, options);
},
// Set a hash of model attributes, and sync the model to the server.
// If the server returns an attributes hash that differs, the model's
// state will be `set` again.
save : function(attrs, options) {
options || (options = {});
if (attrs && !this.set(attrs, options)) return false;
save: function(key, value, options) {
var attrs, current;
if (_.isObject(key) || key == null) {
attrs = key;
options = value;
} else {
attrs = {};
attrs[key] = value;
}
options = options ? _.clone(options) : {};
if (options.wait) current = _.clone(this.attributes);
var silentOptions = _.extend({}, options, {silent: true});
if (attrs && !this.set(attrs, options.wait ? silentOptions : options)) {
return false;
}
var model = this;
var success = options.success;
options.success = function(resp, status, xhr) {
if (!model.set(model.parse(resp, xhr), options)) return false;
if (success) success(model, resp, xhr);
var serverAttrs = model.parse(resp, xhr);
if (options.wait) serverAttrs = _.extend(attrs || {}, serverAttrs);
if (!model.set(serverAttrs, options)) return false;
if (success) {
success(model, resp);
} else {
model.trigger('sync', model, resp, options);
}
};
options.error = wrapError(options.error, model, options);
options.error = Backbone.wrapError(options.error, model, options);
var method = this.isNew() ? 'create' : 'update';
return (this.sync || Backbone.sync).call(this, method, this, options);
var xhr = (this.sync || Backbone.sync).call(this, method, this, options);
if (options.wait) this.set(current, silentOptions);
return xhr;
},
// Destroy this model on the server if it was already persisted. Upon success, the model is removed
// from its collection, if it has one.
destroy : function(options) {
options || (options = {});
if (this.isNew()) return this.trigger('destroy', this, this.collection, options);
// Destroy this model on the server if it was already persisted.
// Optimistically removes the model from its collection, if it has one.
// If `wait: true` is passed, waits for the server to respond before removal.
destroy: function(options) {
options = options ? _.clone(options) : {};
var model = this;
var success = options.success;
options.success = function(resp) {
var triggerDestroy = function() {
model.trigger('destroy', model, model.collection, options);
if (success) success(model, resp);
};
options.error = wrapError(options.error, model, options);
return (this.sync || Backbone.sync).call(this, 'delete', this, options);
if (this.isNew()) return triggerDestroy();
options.success = function(resp) {
if (options.wait) triggerDestroy();
if (success) {
success(model, resp);
} else {
model.trigger('sync', model, resp, options);
}
};
options.error = Backbone.wrapError(options.error, model, options);
var xhr = (this.sync || Backbone.sync).call(this, 'delete', this, options);
if (!options.wait) triggerDestroy();
return xhr;
},
// Default URL for the model's representation on the server -- if you're
// using Backbone's restful methods, override this to change the endpoint
// that will be called.
url : function() {
var base = getUrl(this.collection) || this.urlRoot || urlError();
url: function() {
var base = getValue(this.collection, 'url') || getValue(this, 'urlRoot') || urlError();
if (this.isNew()) return base;
return base + (base.charAt(base.length - 1) == '/' ? '' : '/') + encodeURIComponent(this.id);
},
// **parse** converts a response into the hash of attributes to be `set` on
// the model. The default implementation is just to pass the response along.
parse : function(resp, xhr) {
parse: function(resp, xhr) {
return resp;
},
// Create a new model with identical attributes to this one.
clone : function() {
return new this.constructor(this);
clone: function() {
return new this.constructor(this.attributes);
},
// A model is new if it has never been saved to the server, and lacks an id.
isNew : function() {
isNew: function() {
return this.id == null;
},
// Call this method to manually fire a `change` event for this model.
// Call this method to manually fire a `"change"` event for this model and
// a `"change:attribute"` event for each changed attribute.
// Calling this will cause all objects observing the model to update.
change : function(options) {
this.trigger('change', this, options);
change: function(options) {
if (this._changing || !this.hasChanged()) return this;
this._changing = true;
this._moreChanges = true;
for (var attr in this._changed) {
this.trigger('change:' + attr, this, this._changed[attr], options);
}
while (this._moreChanges) {
this._moreChanges = false;
this.trigger('change', this, options);
}
this._previousAttributes = _.clone(this.attributes);
this._changed = false;
delete this._changed;
this._changing = false;
return this;
},
// Determine if the model has changed since the last `"change"` event.
// If you specify an attribute name, determine if that attribute has changed.
hasChanged : function(attr) {
if (attr) return this._previousAttributes[attr] != this.attributes[attr];
return this._changed;
hasChanged: function(attr) {
if (!arguments.length) return !_.isEmpty(this._changed);
return this._changed && _.has(this._changed, attr);
},
// Return an object containing all the attributes that have changed, or false
// if there are no changed attributes. Useful for determining what parts of a
// view need to be updated and/or what attributes need to be persisted to
// the server.
changedAttributes : function(now) {
now || (now = this.attributes);
var old = this._previousAttributes;
var changed = false;
for (var attr in now) {
if (!_.isEqual(old[attr], now[attr])) {
changed = changed || {};
changed[attr] = now[attr];
}
// Return an object containing all the attributes that have changed, or
// false if there are no changed attributes. Useful for determining what
// parts of a view need to be updated and/or what attributes need to be
// persisted to the server. Unset attributes will be set to undefined.
// You can also pass an attributes object to diff against the model,
// determining if there *would be* a change.
changedAttributes: function(diff) {
if (!diff) return this.hasChanged() ? _.clone(this._changed) : false;
var val, changed = false, old = this._previousAttributes;
for (var attr in diff) {
if (_.isEqual(old[attr], (val = diff[attr]))) continue;
(changed || (changed = {}))[attr] = val;
}
return changed;
},
// Get the previous value of an attribute, recorded at the time the last
// `"change"` event was fired.
previous : function(attr) {
if (!attr || !this._previousAttributes) return null;
previous: function(attr) {
if (!arguments.length || !this._previousAttributes) return null;
return this._previousAttributes[attr];
},
// Get all of the attributes of the model at the time of the previous
// `"change"` event.
previousAttributes : function() {
previousAttributes: function() {
return _.clone(this._previousAttributes);
},
// Check if the model is currently in a valid state. It's only possible to
// get into an *invalid* state if you're using silent changes.
isValid: function() {
return !this.validate(this.attributes);
},
// Run validation against a set of incoming attributes, returning `true`
// if all is well. If a specific `error` callback has been passed,
// call that instead of firing the general `"error"` event.
_performValidation : function(attrs, options) {
var error = this.validate(attrs);
if (error) {
if (options.error) {
options.error(this, error, options);
} else {
this.trigger('error', this, error, options);
}
return false;
_validate: function(attrs, options) {
if (options.silent || !this.validate) return true;
attrs = _.extend({}, this.attributes, attrs);
var error = this.validate(attrs, options);
if (!error) return true;
if (options && options.error) {
options.error(this, error, options);
} else {
this.trigger('error', this, error, options);
}
return true;
return false;
}
});
......@@ -417,10 +478,9 @@
Backbone.Collection = function(models, options) {
options || (options = {});
if (options.comparator) this.comparator = options.comparator;
_.bindAll(this, '_onModelEvent', '_removeReference');
this._reset();
if (models) this.reset(models, {silent: true});
this.initialize.apply(this, arguments);
if (models) this.reset(models, {silent: true, parse: options.parse});
};
// Define the Collection's inheritable methods.
......@@ -428,52 +488,92 @@
// The default model for a collection is just a **Backbone.Model**.
// This should be overridden in most cases.
model : Backbone.Model,
model: Backbone.Model,
// Initialize is an empty function by default. Override it with your own
// initialization logic.
initialize : function(){},
initialize: function(){},
// The JSON representation of a Collection is an array of the
// models' attributes.
toJSON : function() {
toJSON: function() {
return this.map(function(model){ return model.toJSON(); });
},
// Add a model, or list of models to the set. Pass **silent** to avoid
// firing the `added` event for every new model.
add : function(models, options) {
if (_.isArray(models)) {
for (var i = 0, l = models.length; i < l; i++) {
this._add(models[i], options);
// firing the `add` event for every new model.
add: function(models, options) {
var i, index, length, model, cid, id, cids = {}, ids = {};
options || (options = {});
models = _.isArray(models) ? models.slice() : [models];
// Begin by turning bare objects into model references, and preventing
// invalid models or duplicate models from being added.
for (i = 0, length = models.length; i < length; i++) {
if (!(model = models[i] = this._prepareModel(models[i], options))) {
throw new Error("Can't add an invalid model to a collection");
}
} else {
this._add(models, options);
if (cids[cid = model.cid] || this._byCid[cid] ||
(((id = model.id) != null) && (ids[id] || this._byId[id]))) {
throw new Error("Can't add the same model to a collection twice");
}
cids[cid] = ids[id] = model;
}
// Listen to added models' events, and index models for lookup by
// `id` and by `cid`.
for (i = 0; i < length; i++) {
(model = models[i]).on('all', this._onModelEvent, this);
this._byCid[model.cid] = model;
if (model.id != null) this._byId[model.id] = model;
}
// Insert models into the collection, re-sorting if needed, and triggering
// `add` events unless silenced.
this.length += length;
index = options.at != null ? options.at : this.models.length;
splice.apply(this.models, [index, 0].concat(models));
if (this.comparator) this.sort({silent: true});
if (options.silent) return this;
for (i = 0, length = this.models.length; i < length; i++) {
if (!cids[(model = this.models[i]).cid]) continue;
options.index = i;
model.trigger('add', model, this, options);
}
return this;
},
// Remove a model, or a list of models from the set. Pass silent to avoid
// firing the `removed` event for every model removed.
remove : function(models, options) {
if (_.isArray(models)) {
for (var i = 0, l = models.length; i < l; i++) {
this._remove(models[i], options);
// firing the `remove` event for every model removed.
remove: function(models, options) {
var i, l, index, model;
options || (options = {});
models = _.isArray(models) ? models.slice() : [models];
for (i = 0, l = models.length; i < l; i++) {
model = this.getByCid(models[i]) || this.get(models[i]);
if (!model) continue;
delete this._byId[model.id];
delete this._byCid[model.cid];
index = this.indexOf(model);
this.models.splice(index, 1);
this.length--;
if (!options.silent) {
options.index = index;
model.trigger('remove', model, this, options);
}
} else {
this._remove(models, options);
this._removeReference(model);
}
return this;
},
// Get a model from the set by id.
get : function(id) {
get: function(id) {
if (id == null) return null;
return this._byId[id.id != null ? id.id : id];
},
// Get a model from the set by client id.
getByCid : function(cid) {
getByCid: function(cid) {
return cid && this._byCid[cid.cid || cid];
},
......@@ -482,30 +582,38 @@
return this.models[index];
},
// Force the collection to re-sort itself. You don't need to call this under normal
// circumstances, as the set will maintain sort order as each item is added.
sort : function(options) {
// Force the collection to re-sort itself. You don't need to call this under
// normal circumstances, as the set will maintain sort order as each item
// is added.
sort: function(options) {
options || (options = {});
if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
this.models = this.sortBy(this.comparator);
var boundComparator = _.bind(this.comparator, this);
if (this.comparator.length == 1) {
this.models = this.sortBy(boundComparator);
} else {
this.models.sort(boundComparator);
}
if (!options.silent) this.trigger('reset', this, options);
return this;
},
// Pluck an attribute from each model in the collection.
pluck : function(attr) {
pluck: function(attr) {
return _.map(this.models, function(model){ return model.get(attr); });
},
// When you have more items than you want to add or remove individually,
// you can reset the entire set with a new list of models, without firing
// any `added` or `removed` events. Fires `reset` when finished.
reset : function(models, options) {
// any `add` or `remove` events. Fires `reset` when finished.
reset: function(models, options) {
models || (models = []);
options || (options = {});
this.each(this._removeReference);
for (var i = 0, l = this.models.length; i < l; i++) {
this._removeReference(this.models[i]);
}
this._reset();
this.add(models, {silent: true});
this.add(models, {silent: true, parse: options.parse});
if (!options.silent) this.trigger('reset', this, options);
return this;
},
......@@ -513,30 +621,36 @@
// Fetch the default set of models for this collection, resetting the
// collection when they arrive. If `add: true` is passed, appends the
// models to the collection instead of resetting.
fetch : function(options) {
options || (options = {});
fetch: function(options) {
options = options ? _.clone(options) : {};
if (options.parse === undefined) options.parse = true;
var collection = this;
var success = options.success;
options.success = function(resp, status, xhr) {
collection[options.add ? 'add' : 'reset'](collection.parse(resp, xhr), options);
if (success) success(collection, resp);
};
options.error = wrapError(options.error, collection, options);
options.error = Backbone.wrapError(options.error, collection, options);
return (this.sync || Backbone.sync).call(this, 'read', this, options);
},
// Create a new instance of a model in this collection. After the model
// has been created on the server, it will be added to the collection.
// Returns the model, or 'false' if validation on a new model fails.
create : function(model, options) {
// Create a new instance of a model in this collection. Add the model to the
// collection immediately, unless `wait: true` is passed, in which case we
// wait for the server to agree.
create: function(model, options) {
var coll = this;
options || (options = {});
options = options ? _.clone(options) : {};
model = this._prepareModel(model, options);
if (!model) return false;
if (!options.wait) coll.add(model, options);
var success = options.success;
options.success = function(nextModel, resp, xhr) {
coll.add(nextModel, options);
if (success) success(nextModel, resp, xhr);
if (options.wait) coll.add(nextModel, options);
if (success) {
success(nextModel, resp);
} else {
nextModel.trigger('sync', model, resp, options);
}
};
model.save(null, options);
return model;
......@@ -544,7 +658,7 @@
// **parse** converts a response into a list of models to be added to the
// collection. The default implementation is just to pass it through.
parse : function(resp, xhr) {
parse: function(resp, xhr) {
return resp;
},
......@@ -556,77 +670,42 @@
},
// Reset all internal state. Called when the collection is reset.
_reset : function(options) {
_reset: function(options) {
this.length = 0;
this.models = [];
this._byId = {};
this._byCid = {};
},
// Prepare a model to be added to this collection
// Prepare a model or hash of attributes to be added to this collection.
_prepareModel: function(model, options) {
if (!(model instanceof Backbone.Model)) {
var attrs = model;
model = new this.model(attrs, {collection: this});
if (model.validate && !model._performValidation(attrs, options)) model = false;
options.collection = this;
model = new this.model(attrs, options);
if (!model._validate(model.attributes, options)) model = false;
} else if (!model.collection) {
model.collection = this;
}
return model;
},
// Internal implementation of adding a single model to the set, updating
// hash indexes for `id` and `cid` lookups.
// Returns the model, or 'false' if validation on a new model fails.
_add : function(model, options) {
options || (options = {});
model = this._prepareModel(model, options);
if (!model) return false;
var already = this.getByCid(model);
if (already) throw new Error(["Can't add the same model to a set twice", already.id]);
this._byId[model.id] = model;
this._byCid[model.cid] = model;
var index = options.at != null ? options.at :
this.comparator ? this.sortedIndex(model, this.comparator) :
this.length;
this.models.splice(index, 0, model);
model.bind('all', this._onModelEvent);
this.length++;
if (!options.silent) model.trigger('add', model, this, options);
return model;
},
// Internal implementation of removing a single model from the set, updating
// hash indexes for `id` and `cid` lookups.
_remove : function(model, options) {
options || (options = {});
model = this.getByCid(model) || this.get(model);
if (!model) return null;
delete this._byId[model.id];
delete this._byCid[model.cid];
this.models.splice(this.indexOf(model), 1);
this.length--;
if (!options.silent) model.trigger('remove', model, this, options);
this._removeReference(model);
return model;
},
// Internal method to remove a model's ties to a collection.
_removeReference : function(model) {
_removeReference: function(model) {
if (this == model.collection) {
delete model.collection;
}
model.unbind('all', this._onModelEvent);
model.off('all', this._onModelEvent, this);
},
// Internal method called every time a model in the set fires an event.
// Sets need to update their indexes when models change ids. All other
// events simply proxy through. "add" and "remove" events that originate
// in other collections are ignored.
_onModelEvent : function(ev, model, collection, options) {
_onModelEvent: function(ev, model, collection, options) {
if ((ev == 'add' || ev == 'remove') && collection != this) return;
if (ev == 'destroy') {
this._remove(model, options);
this.remove(model, options);
}
if (model && ev === 'change:' + model.idAttribute) {
delete this._byId[model.previous(model.idAttribute)];
......@@ -638,10 +717,11 @@
});
// Underscore methods that we want to implement on the Collection.
var methods = ['forEach', 'each', 'map', 'reduce', 'reduceRight', 'find', 'detect',
'filter', 'select', 'reject', 'every', 'all', 'some', 'any', 'include',
'contains', 'invoke', 'max', 'min', 'sortBy', 'sortedIndex', 'toArray', 'size',
'first', 'rest', 'last', 'without', 'indexOf', 'lastIndexOf', 'isEmpty', 'groupBy'];
var methods = ['forEach', 'each', 'map', 'reduce', 'reduceRight', 'find',
'detect', 'filter', 'select', 'reject', 'every', 'all', 'some', 'any',
'include', 'contains', 'invoke', 'max', 'min', 'sortBy', 'sortedIndex',
'toArray', 'size', 'first', 'initial', 'rest', 'last', 'without', 'indexOf',
'shuffle', 'lastIndexOf', 'isEmpty', 'groupBy'];
// Mix in each Underscore method as a proxy to `Collection#models`.
_.each(methods, function(method) {
......@@ -664,8 +744,8 @@
// Cached regular expressions for matching named param parts and splatted
// parts of route strings.
var namedParam = /:([\w\d]+)/g;
var splatParam = /\*([\w\d]+)/g;
var namedParam = /:\w+/g;
var splatParam = /\*\w+/g;
var escapeRegExp = /[-[\]{}()+?.,\\^$|#\s]/g;
// Set up all inheritable **Backbone.Router** properties and methods.
......@@ -673,7 +753,7 @@
// Initialize is an empty function by default. Override it with your own
// initialization logic.
initialize : function(){},
initialize: function(){},
// Manually bind a single named route to a callback. For example:
//
......@@ -681,25 +761,28 @@
// ...
// });
//
route : function(route, name, callback) {
route: function(route, name, callback) {
Backbone.history || (Backbone.history = new Backbone.History);
if (!_.isRegExp(route)) route = this._routeToRegExp(route);
if (!callback) callback = this[name];
Backbone.history.route(route, _.bind(function(fragment) {
var args = this._extractParameters(route, fragment);
callback.apply(this, args);
callback && callback.apply(this, args);
this.trigger.apply(this, ['route:' + name].concat(args));
Backbone.history.trigger('route', this, name, args);
}, this));
return this;
},
// Simple proxy to `Backbone.history` to save a fragment into the history.
navigate : function(fragment, triggerRoute) {
Backbone.history.navigate(fragment, triggerRoute);
navigate: function(fragment, options) {
Backbone.history.navigate(fragment, options);
},
// Bind all defined routes to `Backbone.history`. We have to reverse the
// order of the routes here to support behavior where the most general
// routes can be defined at the bottom of the route map.
_bindRoutes : function() {
_bindRoutes: function() {
if (!this.routes) return;
var routes = [];
for (var route in this.routes) {
......@@ -712,16 +795,16 @@
// Convert a route string into a regular expression, suitable for matching
// against the current location hash.
_routeToRegExp : function(route) {
route = route.replace(escapeRegExp, "\\$&")
.replace(namedParam, "([^\/]*)")
.replace(splatParam, "(.*?)");
_routeToRegExp: function(route) {
route = route.replace(escapeRegExp, '\\$&')
.replace(namedParam, '([^\/]+)')
.replace(splatParam, '(.*?)');
return new RegExp('^' + route + '$');
},
// Given a route, and a URL fragment that it matches, return the array of
// extracted parameters.
_extractParameters : function(route, fragment) {
_extractParameters: function(route, fragment) {
return route.exec(fragment).slice(1);
}
......@@ -737,8 +820,8 @@
_.bindAll(this, 'checkUrl');
};
// Cached regex for cleaning hashes.
var hashStrip = /^#*/;
// Cached regex for cleaning leading hashes and slashes .
var routeStripper = /^[#\/]/;
// Cached regex for detecting MSIE.
var isExplorer = /msie [\w.]+/;
......@@ -747,7 +830,7 @@
var historyStarted = false;
// Set up all inheritable **Backbone.History** properties and methods.
_.extend(Backbone.History.prototype, {
_.extend(Backbone.History.prototype, Backbone.Events, {
// The default interval to poll for hash changes, if necessary, is
// twenty times a second.
......@@ -755,28 +838,30 @@
// Get the cross-browser normalized URL fragment, either from the URL,
// the hash, or the override.
getFragment : function(fragment, forcePushState) {
getFragment: function(fragment, forcePushState) {
if (fragment == null) {
if (this._hasPushState || forcePushState) {
fragment = window.location.pathname;
var search = window.location.search;
if (search) fragment += search;
if (fragment.indexOf(this.options.root) == 0) fragment = fragment.substr(this.options.root.length);
} else {
fragment = window.location.hash;
}
}
return decodeURIComponent(fragment.replace(hashStrip, ''));
fragment = decodeURIComponent(fragment);
if (!fragment.indexOf(this.options.root)) fragment = fragment.substr(this.options.root.length);
return fragment.replace(routeStripper, '');
},
// Start the hash change handling, returning `true` if the current URL matches
// an existing route, and `false` otherwise.
start : function(options) {
start: function(options) {
// Figure out the initial configuration. Do we need an iframe?
// Is pushState desired ... is it available?
if (historyStarted) throw new Error("Backbone.history has already been started");
this.options = _.extend({}, {root: '/'}, this.options, options);
this._wantsHashChange = this.options.hashChange !== false;
this._wantsPushState = !!this.options.pushState;
this._hasPushState = !!(this.options.pushState && window.history && window.history.pushState);
var fragment = this.getFragment();
......@@ -791,10 +876,10 @@
// 'onhashchange' is supported, determine how we check the URL state.
if (this._hasPushState) {
$(window).bind('popstate', this.checkUrl);
} else if ('onhashchange' in window && !oldIE) {
} else if (this._wantsHashChange && ('onhashchange' in window) && !oldIE) {
$(window).bind('hashchange', this.checkUrl);
} else {
setInterval(this.checkUrl, this.interval);
} else if (this._wantsHashChange) {
this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
}
// Determine if we need to change the base url, for a pushState link
......@@ -803,13 +888,19 @@
historyStarted = true;
var loc = window.location;
var atRoot = loc.pathname == this.options.root;
if (this._wantsPushState && !this._hasPushState && !atRoot) {
// If we've started off with a route from a `pushState`-enabled browser,
// but we're currently in a browser that doesn't support it...
if (this._wantsHashChange && this._wantsPushState && !this._hasPushState && !atRoot) {
this.fragment = this.getFragment(null, true);
window.location.replace(this.options.root + '#' + this.fragment);
// Return immediately as browser will do redirect to new url
return true;
// Or if we've started out with a hash-based route, but we're currently
// in a browser where it could be `pushState`-based instead...
} else if (this._wantsPushState && this._hasPushState && atRoot && loc.hash) {
this.fragment = loc.hash.replace(hashStrip, '');
this.fragment = loc.hash.replace(routeStripper, '');
window.history.replaceState({}, document.title, loc.protocol + '//' + loc.host + this.options.root + this.fragment);
}
......@@ -818,15 +909,23 @@
}
},
// Add a route to be tested when the fragment changes. Routes added later may
// override previous routes.
route : function(route, callback) {
this.handlers.unshift({route : route, callback : callback});
// Disable Backbone.history, perhaps temporarily. Not useful in a real app,
// but possibly useful for unit testing Routers.
stop: function() {
$(window).unbind('popstate', this.checkUrl).unbind('hashchange', this.checkUrl);
clearInterval(this._checkUrlInterval);
historyStarted = false;
},
// Add a route to be tested when the fragment changes. Routes added later
// may override previous routes.
route: function(route, callback) {
this.handlers.unshift({route: route, callback: callback});
},
// Checks the current URL to see if it has changed, and if it has,
// calls `loadUrl`, normalizing across the hidden iframe.
checkUrl : function(e) {
checkUrl: function(e) {
var current = this.getFragment();
if (current == this.fragment && this.iframe) current = this.getFragment(this.iframe.location.hash);
if (current == this.fragment || current == decodeURIComponent(this.fragment)) return false;
......@@ -837,7 +936,7 @@
// Attempt to load the current URL fragment. If a route succeeds with a
// match, returns `true`. If no defined routes matches the fragment,
// returns `false`.
loadUrl : function(fragmentOverride) {
loadUrl: function(fragmentOverride) {
var fragment = this.fragment = this.getFragment(fragmentOverride);
var matched = _.any(this.handlers, function(handler) {
if (handler.route.test(fragment)) {
......@@ -848,27 +947,54 @@
return matched;
},
// Save a fragment into the hash history. You are responsible for properly
// URL-encoding the fragment in advance. This does not trigger
// a `hashchange` event.
navigate : function(fragment, triggerRoute) {
var frag = (fragment || '').replace(hashStrip, '');
// Save a fragment into the hash history, or replace the URL state if the
// 'replace' option is passed. You are responsible for properly URL-encoding
// the fragment in advance.
//
// The options object can contain `trigger: true` if you wish to have the
// route callback be fired (not usually desirable), or `replace: true`, if
// you which to modify the current URL without adding an entry to the history.
navigate: function(fragment, options) {
if (!historyStarted) return false;
if (!options || options === true) options = {trigger: options};
var frag = (fragment || '').replace(routeStripper, '');
if (this.fragment == frag || this.fragment == decodeURIComponent(frag)) return;
// If pushState is available, we use it to set the fragment as a real URL.
if (this._hasPushState) {
var loc = window.location;
if (frag.indexOf(this.options.root) != 0) frag = this.options.root + frag;
this.fragment = frag;
window.history.pushState({}, document.title, loc.protocol + '//' + loc.host + frag);
} else {
window.location.hash = this.fragment = frag;
window.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, frag);
// If hash changes haven't been explicitly disabled, update the hash
// fragment to store history.
} else if (this._wantsHashChange) {
this.fragment = frag;
this._updateHash(window.location, frag, options.replace);
if (this.iframe && (frag != this.getFragment(this.iframe.location.hash))) {
this.iframe.document.open().close();
this.iframe.location.hash = frag;
// Opening and closing the iframe tricks IE7 and earlier to push a history entry on hash-tag change.
// When replace is true, we don't want this.
if(!options.replace) this.iframe.document.open().close();
this._updateHash(this.iframe.location, frag, options.replace);
}
// If you've told us that you explicitly don't want fallback hashchange-
// based history, then `navigate` becomes a page refresh.
} else {
window.location.assign(this.options.root + fragment);
}
if (triggerRoute) this.loadUrl(fragment);
}
if (options.trigger) this.loadUrl(fragment);
},
// Update the hash location, either replacing the current entry, or adding
// a new one to the browser history.
_updateHash: function(location, fragment, replace) {
if (replace) {
location.replace(location.toString().replace(/(javascript:|#).*$/, '') + '#' + fragment);
} else {
location.hash = fragment;
}
}
});
// Backbone.View
......@@ -880,15 +1006,8 @@
this.cid = _.uniqueId('view');
this._configure(options || {});
this._ensureElement();
this.delegateEvents();
this.initialize.apply(this, arguments);
};
// Element lookup, scoped to DOM elements within the current view.
// This should be prefered to global lookups, if you're dealing with
// a specific view.
var selectorDelegate = function(selector) {
return $(selector, this.el);
this.delegateEvents();
};
// Cached regex to split keys for `delegate`.
......@@ -901,26 +1020,29 @@
_.extend(Backbone.View.prototype, Backbone.Events, {
// The default `tagName` of a View's element is `"div"`.
tagName : 'div',
tagName: 'div',
// Attach the `selectorDelegate` function as the `$` property.
$ : selectorDelegate,
// jQuery delegate for element lookup, scoped to DOM elements within the
// current view. This should be prefered to global lookups where possible.
$: function(selector) {
return this.$el.find(selector);
},
// Initialize is an empty function by default. Override it with your own
// initialization logic.
initialize : function(){},
initialize: function(){},
// **render** is the core function that your view should override, in order
// to populate its element (`this.el`), with the appropriate HTML. The
// convention is for **render** to always return `this`.
render : function() {
render: function() {
return this;
},
// Remove this view from the DOM. Note that the view isn't present in the
// DOM by default, so calling this method may be a no-op.
remove : function() {
$(this.el).remove();
remove: function() {
this.$el.remove();
return this;
},
......@@ -929,20 +1051,30 @@
//
// var el = this.make('li', {'class': 'row'}, this.model.escape('title'));
//
make : function(tagName, attributes, content) {
make: function(tagName, attributes, content) {
var el = document.createElement(tagName);
if (attributes) $(el).attr(attributes);
if (content) $(el).html(content);
return el;
},
// Set callbacks, where `this.callbacks` is a hash of
// Change the view's element (`this.el` property), including event
// re-delegation.
setElement: function(element, delegate) {
this.$el = $(element);
this.el = this.$el[0];
if (delegate !== false) this.delegateEvents();
return this;
},
// Set callbacks, where `this.events` is a hash of
//
// *{"event selector": "callback"}*
//
// {
// 'mousedown .title': 'edit',
// 'click .button': 'save'
// 'click .open': function(e) { ... }
// }
//
// pairs. Callbacks will be bound to the view, with `this` set properly.
......@@ -950,29 +1082,36 @@
// Omitting the selector binds the event to `this.el`.
// This only works for delegate-able events: not `focus`, `blur`, and
// not `change`, `submit`, and `reset` in Internet Explorer.
delegateEvents : function(events) {
if (!(events || (events = this.events))) return;
if (_.isFunction(events)) events = events.call(this);
$(this.el).unbind('.delegateEvents' + this.cid);
delegateEvents: function(events) {
if (!(events || (events = getValue(this, 'events')))) return;
this.undelegateEvents();
for (var key in events) {
var method = this[events[key]];
var method = events[key];
if (!_.isFunction(method)) method = this[events[key]];
if (!method) throw new Error('Event "' + events[key] + '" does not exist');
var match = key.match(eventSplitter);
var eventName = match[1], selector = match[2];
method = _.bind(method, this);
eventName += '.delegateEvents' + this.cid;
if (selector === '') {
$(this.el).bind(eventName, method);
this.$el.bind(eventName, method);
} else {
$(this.el).delegate(selector, eventName, method);
this.$el.delegate(selector, eventName, method);
}
}
},
// Clears all callbacks previously bound to the view with `delegateEvents`.
// You usually don't need to use this, but may wish to if you have multiple
// Backbone views attached to the same DOM element.
undelegateEvents: function() {
this.$el.unbind('.delegateEvents' + this.cid);
},
// Performs the initial configuration of a View with a set of options.
// Keys with special meaning *(model, collection, id, className)*, are
// attached directly to the view.
_configure : function(options) {
_configure: function(options) {
if (this.options) options = _.extend({}, this.options, options);
for (var i = 0, l = viewOptions.length; i < l; i++) {
var attr = viewOptions[i];
......@@ -984,15 +1123,15 @@
// Ensure that the View has a DOM element to render into.
// If `this.el` is a string, pass it through `$()`, take the first
// matching element, and re-assign it to `el`. Otherwise, create
// an element from the `id`, `className` and `tagName` proeprties.
_ensureElement : function() {
// an element from the `id`, `className` and `tagName` properties.
_ensureElement: function() {
if (!this.el) {
var attrs = this.attributes || {};
var attrs = getValue(this, 'attributes') || {};
if (this.id) attrs.id = this.id;
if (this.className) attrs['class'] = this.className;
this.el = this.make(this.tagName, attrs);
} else if (_.isString(this.el)) {
this.el = $(this.el).get(0);
this.setElement(this.make(this.tagName, attrs), false);
} else {
this.setElement(this.el, false);
}
}
......@@ -1009,20 +1148,20 @@
Backbone.Model.extend = Backbone.Collection.extend =
Backbone.Router.extend = Backbone.View.extend = extend;
// Backbone.sync
// -------------
// Map from CRUD to HTTP for our default `Backbone.sync` implementation.
var methodMap = {
'create': 'POST',
'update': 'PUT',
'delete': 'DELETE',
'read' : 'GET'
'read': 'GET'
};
// Backbone.sync
// -------------
// Override this function to change the manner in which Backbone persists
// models to the server. You will be passed the type of request, and the
// model in question. By default, uses makes a RESTful Ajax request
// model in question. By default, makes a RESTful Ajax request
// to the model's `url()`. Some possible customizations could be:
//
// * Use `setTimeout` to batch rapid-fire updates into a single request.
......@@ -1031,26 +1170,23 @@
//
// Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
// as `POST`, with a `_method` parameter containing the true HTTP method,
// as well as all requests with the body as `application/x-www-form-urlencoded` instead of
// `application/json` with the model in a param named `model`.
// as well as all requests with the body as `application/x-www-form-urlencoded`
// instead of `application/json` with the model in a param named `model`.
// Useful when interfacing with server-side languages like **PHP** that make
// it difficult to read the body of `PUT` requests.
Backbone.sync = function(method, model, options) {
var type = methodMap[method];
// Default JSON-request options.
var params = _.extend({
type: type,
dataType: 'json'
}, options);
var params = {type: type, dataType: 'json'};
// Ensure that we have a URL.
if (!params.url) {
params.url = getUrl(model) || urlError();
if (!options.url) {
params.url = getValue(model, 'url') || urlError();
}
// Ensure that we have the appropriate request data.
if (!params.data && model && (method == 'create' || method == 'update')) {
if (!options.data && model && (method == 'create' || method == 'update')) {
params.contentType = 'application/json';
params.data = JSON.stringify(model.toJSON());
}
......@@ -1058,7 +1194,7 @@
// For older servers, emulate JSON by encoding the request into an HTML-form.
if (Backbone.emulateJSON) {
params.contentType = 'application/x-www-form-urlencoded';
params.data = params.data ? {model : params.data} : {};
params.data = params.data ? {model: params.data} : {};
}
// For older servers, emulate HTTP by mimicking the HTTP method with `_method`
......@@ -1078,8 +1214,20 @@
params.processData = false;
}
// Make the request.
return $.ajax(params);
// Make the request, allowing the user to override any Ajax options.
return $.ajax(_.extend(params, options));
};
// Wrap an optional error callback with a fallback error event.
Backbone.wrapError = function(onError, originalModel, options) {
return function(model, resp) {
resp = model === originalModel ? resp : model;
if (onError) {
onError(originalModel, resp, options);
} else {
originalModel.trigger('error', originalModel, resp, options);
}
};
};
// Helpers
......@@ -1096,11 +1244,11 @@
// The constructor function for the new subclass is either defined by you
// (the "constructor" property in your `extend` definition), or defaulted
// by us to simply call `super()`.
// by us to simply call the parent's constructor.
if (protoProps && protoProps.hasOwnProperty('constructor')) {
child = protoProps.constructor;
} else {
child = function(){ return parent.apply(this, arguments); };
child = function(){ parent.apply(this, arguments); };
}
// Inherit class (static) properties from parent.
......@@ -1127,11 +1275,11 @@
return child;
};
// Helper function to get a URL from a Model or Collection as a property
// Helper function to get a value from a Backbone object as a property
// or as a function.
var getUrl = function(object) {
if (!(object && object.url)) return null;
return _.isFunction(object.url) ? object.url() : object.url;
var getValue = function(object, prop) {
if (!(object && object[prop])) return null;
return _.isFunction(object[prop]) ? object[prop]() : object[prop];
};
// Throw an error when a URL is needed, and none is supplied.
......@@ -1139,20 +1287,4 @@
throw new Error('A "url" property or function must be specified');
};
// Wrap an optional error callback with a fallback error event.
var wrapError = function(onError, model, options) {
return function(resp) {
if (onError) {
onError(model, resp, options);
} else {
model.trigger('error', model, resp, options);
}
};
};
// Helper function to escape a string for HTML rendering.
var escapeHTML = function(string) {
return string.replace(/&(?!\w+;|#\d+;|#x[\da-f]+;)/gi, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
};
}).call(this);
architecture-examples/backbone/js/libs/jslitmus.js deleted 100644 → 0
View file @ de0428e0
// JSLitmus.js
//
// Copyright (c) 2010, Robert Kieffer, http://broofa.com
// Available under MIT license (http://en.wikipedia.org/wiki/MIT_License)
(function() {
// Private methods and state
// Get platform info but don't go crazy trying to recognize everything
// that's out there. This is just for the major platforms and OSes.
var platform = 'unknown platform', ua = navigator.userAgent;
// Detect OS
var oses = ['Windows','iPhone OS','(Intel |PPC )?Mac OS X','Linux'].join('|');
var pOS = new RegExp('((' + oses + ') [^ \);]*)').test(ua) ? RegExp.$1 : null;
if (!pOS) pOS = new RegExp('((' + oses + ')[^ \);]*)').test(ua) ? RegExp.$1 : null;
// Detect browser
var pName = /(Chrome|MSIE|Safari|Opera|Firefox)/.test(ua) ? RegExp.$1 : null;
// Detect version
var vre = new RegExp('(Version|' + pName + ')[ \/]([^ ;]*)');
var pVersion = (pName && vre.test(ua)) ? RegExp.$2 : null;
var platform = (pOS && pName && pVersion) ? pName + ' ' + pVersion + ' on ' + pOS : 'unknown platform';
/**
* A smattering of methods that are needed to implement the JSLitmus testbed.
*/
var jsl = {
/**
* Enhanced version of escape()
*/
escape: function(s) {
s = s.replace(/,/g, '\\,');
s = escape(s);
s = s.replace(/\+/g, '%2b');
s = s.replace(/ /g, '+');
return s;
},
/**
* Get an element by ID.
*/
$: function(id) {
return document.getElementById(id);
},
/**
* Null function
*/
F: function() {},
/**
* Set the status shown in the UI
*/
status: function(msg) {
var el = jsl.$('jsl_status');
if (el) el.innerHTML = msg || '';
},
/**
* Convert a number to an abbreviated string like, "15K" or "10M"
*/
toLabel: function(n) {
if (n == Infinity) {
return 'Infinity';
} else if (n > 1e9) {
n = Math.round(n/1e8);
return n/10 + 'B';
} else if (n > 1e6) {
n = Math.round(n/1e5);
return n/10 + 'M';
} else if (n > 1e3) {
n = Math.round(n/1e2);
return n/10 + 'K';
}
return n;
},
/**
* Copy properties from src to dst
*/
extend: function(dst, src) {
for (var k in src) dst[k] = src[k]; return dst;
},
/**
* Like Array.join(), but for the key-value pairs in an object
*/
join: function(o, delimit1, delimit2) {
if (o.join) return o.join(delimit1); // If it's an array
var pairs = [];
for (var k in o) pairs.push(k + delimit1 + o[k]);
return pairs.join(delimit2);
},
/**
* Array#indexOf isn't supported in IE, so we use this as a cross-browser solution
*/
indexOf: function(arr, o) {
if (arr.indexOf) return arr.indexOf(o);
for (var i = 0; i < this.length; i++) if (arr[i] === o) return i;
return -1;
}
};
/**
* Test manages a single test (created with
* JSLitmus.test())
*
* @private
*/
var Test = function (name, f) {
if (!f) throw new Error('Undefined test function');
if (!/function[^\(]*\(([^,\)]*)/.test(f.toString())) {
throw new Error('"' + name + '" test: Test is not a valid Function object');
}
this.loopArg = RegExp.$1;
this.name = name;
this.f = f;
};
jsl.extend(Test, /** @lends Test */ {
/** Calibration tests for establishing iteration loop overhead */
CALIBRATIONS: [
new Test('calibrating loop', function(count) {while (count--);}),
new Test('calibrating function', jsl.F)
],
/**
* Run calibration tests. Returns true if calibrations are not yet
* complete (in which case calling code should run the tests yet again).
* onCalibrated - Callback to invoke when calibrations have finished
*/
calibrate: function(onCalibrated) {
for (var i = 0; i < Test.CALIBRATIONS.length; i++) {
var cal = Test.CALIBRATIONS[i];
if (cal.running) return true;
if (!cal.count) {
cal.isCalibration = true;
cal.onStop = onCalibrated;
//cal.MIN_TIME = .1; // Do calibrations quickly
cal.run(2e4);
return true;
}
}
return false;
}
});
jsl.extend(Test.prototype, {/** @lends Test.prototype */
/** Initial number of iterations */
INIT_COUNT: 10,
/** Max iterations allowed (i.e. used to detect bad looping functions) */
MAX_COUNT: 1e9,
/** Minimum time a test should take to get valid results (secs) */
MIN_TIME: .5,
/** Callback invoked when test state changes */
onChange: jsl.F,
/** Callback invoked when test is finished */
onStop: jsl.F,
/**
* Reset test state
*/
reset: function() {
delete this.count;
delete this.time;
delete this.running;
delete this.error;
},
/**
* Run the test (in a timeout). We use a timeout to make sure the browser
* has a chance to finish rendering any UI changes we've made, like
* updating the status message.
*/
run: function(count) {
count = count || this.INIT_COUNT;
jsl.status(this.name + ' x ' + count);
this.running = true;
var me = this;
setTimeout(function() {me._run(count);}, 200);
},
/**
* The nuts and bolts code that actually runs a test
*/
_run: function(count) {
var me = this;
// Make sure calibration tests have run
if (!me.isCalibration && Test.calibrate(function() {me.run(count);})) return;
this.error = null;
try {
var start, f = this.f, now, i = count;
// Start the timer
start = new Date();
// Now for the money shot. If this is a looping function ...
if (this.loopArg) {
// ... let it do the iteration itself
f(count);
} else {
// ... otherwise do the iteration for it
while (i--) f();
}
// Get time test took (in secs)
this.time = Math.max(1,new Date() - start)/1000;
// Store iteration count and per-operation time taken
this.count = count;
this.period = this.time/count;
// Do we need to do another run?
this.running = this.time <= this.MIN_TIME;
// ... if so, compute how many times we should iterate
if (this.running) {
// Bump the count to the nearest power of 2
var x = this.MIN_TIME/this.time;
var pow = Math.pow(2, Math.max(1, Math.ceil(Math.log(x)/Math.log(2))));
count *= pow;
if (count > this.MAX_COUNT) {
throw new Error('Max count exceeded. If this test uses a looping function, make sure the iteration loop is working properly.');
}
}
} catch (e) {
// Exceptions are caught and displayed in the test UI
this.reset();
this.error = e;
}
// Figure out what to do next
if (this.running) {
me.run(count);
} else {
jsl.status('');
me.onStop(me);
}
// Finish up
this.onChange(this);
},
/**
* Get the number of operations per second for this test.
*
* @param normalize if true, iteration loop overhead taken into account
*/
getHz: function(/**Boolean*/ normalize) {
var p = this.period;
// Adjust period based on the calibration test time
if (normalize && !this.isCalibration) {
var cal = Test.CALIBRATIONS[this.loopArg ? 0 : 1];
// If the period is within 20% of the calibration time, then zero the
// it out
p = p < cal.period*1.2 ? 0 : p - cal.period;
}
return Math.round(1/p);
},
/**
* Get a friendly string describing the test
*/
toString: function() {
return this.name + ' - ' + this.time/this.count + ' secs';
}
});
// CSS we need for the UI
var STYLESHEET = '<style> \
#jslitmus {font-family:sans-serif; font-size: 12px;} \
#jslitmus a {text-decoration: none;} \
#jslitmus a:hover {text-decoration: underline;} \
#jsl_status { \
margin-top: 10px; \
font-size: 10px; \
color: #888; \
} \
A IMG {border:none} \
#test_results { \
margin-top: 10px; \
font-size: 12px; \
font-family: sans-serif; \
border-collapse: collapse; \
border-spacing: 0px; \
} \
#test_results th, #test_results td { \
border: solid 1px #ccc; \
vertical-align: top; \
padding: 3px; \
} \
#test_results th { \
vertical-align: bottom; \
background-color: #ccc; \
padding: 1px; \
font-size: 10px; \
} \
#test_results #test_platform { \
color: #444; \
text-align:center; \
} \
#test_results .test_row { \
color: #006; \
cursor: pointer; \
} \
#test_results .test_nonlooping { \
border-left-style: dotted; \
border-left-width: 2px; \
} \
#test_results .test_looping { \
border-left-style: solid; \
border-left-width: 2px; \
} \
#test_results .test_name {white-space: nowrap;} \
#test_results .test_pending { \
} \
#test_results .test_running { \
font-style: italic; \
} \
#test_results .test_done {} \
#test_results .test_done { \
text-align: right; \
font-family: monospace; \
} \
#test_results .test_error {color: #600;} \
#test_results .test_error .error_head {font-weight:bold;} \
#test_results .test_error .error_body {font-size:85%;} \
#test_results .test_row:hover td { \
background-color: #ffc; \
text-decoration: underline; \
} \
#chart { \
margin: 10px 0px; \
width: 250px; \
} \
#chart img { \
border: solid 1px #ccc; \
margin-bottom: 5px; \
} \
#chart #tiny_url { \
height: 40px; \
width: 250px; \
} \
#jslitmus_credit { \
font-size: 10px; \
color: #888; \
margin-top: 8px; \
} \
</style>';
// HTML markup for the UI
var MARKUP = '<div id="jslitmus"> \
<button onclick="JSLitmus.runAll(event)">Run Tests</button> \
<button id="stop_button" disabled="disabled" onclick="JSLitmus.stop()">Stop Tests</button> \
<br \> \
<br \> \
<input type="checkbox" style="vertical-align: middle" id="test_normalize" checked="checked" onchange="JSLitmus.renderAll()""> Normalize results \
<table id="test_results"> \
<colgroup> \
<col /> \
<col width="100" /> \
</colgroup> \
<tr><th id="test_platform" colspan="2">' + platform + '</th></tr> \
<tr><th>Test</th><th>Ops/sec</th></tr> \
<tr id="test_row_template" class="test_row" style="display:none"> \
<td class="test_name"></td> \
<td class="test_result">Ready</td> \
</tr> \
</table> \
<div id="jsl_status"></div> \
<div id="chart" style="display:none"> \
<a id="chart_link" target="_blank"><img id="chart_image"></a> \
TinyURL (for chart): \
<iframe id="tiny_url" frameBorder="0" scrolling="no" src=""></iframe> \
</div> \
<a id="jslitmus_credit" title="JSLitmus home page" href="http://code.google.com/p/jslitmus" target="_blank">Powered by JSLitmus</a> \
</div>';
/**
* The public API for creating and running tests
*/
window.JSLitmus = {
/** The list of all tests that have been registered with JSLitmus.test */
_tests: [],
/** The queue of tests that need to be run */
_queue: [],
/**
* The parsed query parameters the current page URL. This is provided as a
* convenience for test functions - it's not used by JSLitmus proper
*/
params: {},
/**
* Initialize
*/
_init: function() {
// Parse query params into JSLitmus.params[] hash
var match = (location + '').match(/([^?#]*)(#.*)?$/);
if (match) {
var pairs = match[1].split('&');
for (var i = 0; i < pairs.length; i++) {
var pair = pairs[i].split('=');
if (pair.length > 1) {
var key = pair.shift();
var value = pair.length > 1 ? pair.join('=') : pair[0];
this.params[key] = value;
}
}
}
// Write out the stylesheet. We have to do this here because IE
// doesn't honor sheets written after the document has loaded.
document.write(STYLESHEET);
// Setup the rest of the UI once the document is loaded
if (window.addEventListener) {
window.addEventListener('load', this._setup, false);
} else if (document.addEventListener) {
document.addEventListener('load', this._setup, false);
} else if (window.attachEvent) {
window.attachEvent('onload', this._setup);
}
return this;
},
/**
* Set up the UI
*/
_setup: function() {
var el = jsl.$('jslitmus_container');
if (!el) document.body.appendChild(el = document.createElement('div'));
el.innerHTML = MARKUP;
// Render the UI for all our tests
for (var i=0; i < JSLitmus._tests.length; i++)
JSLitmus.renderTest(JSLitmus._tests[i]);
},
/**
* (Re)render all the test results
*/
renderAll: function() {
for (var i = 0; i < JSLitmus._tests.length; i++)
JSLitmus.renderTest(JSLitmus._tests[i]);
JSLitmus.renderChart();
},
/**
* (Re)render the chart graphics
*/
renderChart: function() {
var url = JSLitmus.chartUrl();
jsl.$('chart_link').href = url;
jsl.$('chart_image').src = url;
jsl.$('chart').style.display = '';
// Update the tiny URL
jsl.$('tiny_url').src = 'http://tinyurl.com/api-create.php?url='+escape(url);
},
/**
* (Re)render the results for a specific test
*/
renderTest: function(test) {
// Make a new row if needed
if (!test._row) {
var trow = jsl.$('test_row_template');
if (!trow) return;
test._row = trow.cloneNode(true);
test._row.style.display = '';
test._row.id = '';
test._row.onclick = function() {JSLitmus._queueTest(test);};
test._row.title = 'Run ' + test.name + ' test';
trow.parentNode.appendChild(test._row);
test._row.cells[0].innerHTML = test.name;
}
var cell = test._row.cells[1];
var cns = [test.loopArg ? 'test_looping' : 'test_nonlooping'];
if (test.error) {
cns.push('test_error');
cell.innerHTML =
'<div class="error_head">' + test.error + '</div>' +
'<ul class="error_body"><li>' +
jsl.join(test.error, ': ', '</li><li>') +
'</li></ul>';
} else {
if (test.running) {
cns.push('test_running');
cell.innerHTML = 'running';
} else if (jsl.indexOf(JSLitmus._queue, test) >= 0) {
cns.push('test_pending');
cell.innerHTML = 'pending';
} else if (test.count) {
cns.push('test_done');
var hz = test.getHz(jsl.$('test_normalize').checked);
cell.innerHTML = hz != Infinity ? hz : '&infin;';
cell.title = 'Looped ' + test.count + ' times in ' + test.time + ' seconds';
} else {
cell.innerHTML = 'ready';
}
}
cell.className = cns.join(' ');
},
/**
* Create a new test
*/
test: function(name, f) {
// Create the Test object
var test = new Test(name, f);
JSLitmus._tests.push(test);
// Re-render if the test state changes
test.onChange = JSLitmus.renderTest;
// Run the next test if this one finished
test.onStop = function(test) {
if (JSLitmus.onTestFinish) JSLitmus.onTestFinish(test);
JSLitmus.currentTest = null;
JSLitmus._nextTest();
};
// Render the new test
this.renderTest(test);
},
/**
* Add all tests to the run queue
*/
runAll: function(e) {
e = e || window.event;
var reverse = e && e.shiftKey, len = JSLitmus._tests.length;
for (var i = 0; i < len; i++) {
JSLitmus._queueTest(JSLitmus._tests[!reverse ? i : (len - i - 1)]);
}
},
/**
* Remove all tests from the run queue. The current test has to finish on
* it's own though
*/
stop: function() {
while (JSLitmus._queue.length) {
var test = JSLitmus._queue.shift();
JSLitmus.renderTest(test);
}
},
/**
* Run the next test in the run queue
*/
_nextTest: function() {
if (!JSLitmus.currentTest) {
var test = JSLitmus._queue.shift();
if (test) {
jsl.$('stop_button').disabled = false;
JSLitmus.currentTest = test;
test.run();
JSLitmus.renderTest(test);
if (JSLitmus.onTestStart) JSLitmus.onTestStart(test);
} else {
jsl.$('stop_button').disabled = true;
JSLitmus.renderChart();
}
}
},
/**
* Add a test to the run queue
*/
_queueTest: function(test) {
if (jsl.indexOf(JSLitmus._queue, test) >= 0) return;
JSLitmus._queue.push(test);
JSLitmus.renderTest(test);
JSLitmus._nextTest();
},
/**
* Generate a Google Chart URL that shows the data for all tests
*/
chartUrl: function() {
var n = JSLitmus._tests.length, markers = [], data = [];
var d, min = 0, max = -1e10;
var normalize = jsl.$('test_normalize').checked;
// Gather test data
for (var i=0; i < JSLitmus._tests.length; i++) {
var test = JSLitmus._tests[i];
if (test.count) {
var hz = test.getHz(normalize);
var v = hz != Infinity ? hz : 0;
data.push(v);
markers.push('t' + jsl.escape(test.name + '(' + jsl.toLabel(hz)+ ')') + ',000000,0,' +
markers.length + ',10');
max = Math.max(v, max);
}
}
if (markers.length <= 0) return null;
// Build chart title
var title = document.getElementsByTagName('title');
title = (title && title.length) ? title[0].innerHTML : null;
var chart_title = [];
if (title) chart_title.push(title);
chart_title.push('Ops/sec (' + platform + ')');
// Build labels
var labels = [jsl.toLabel(min), jsl.toLabel(max)];
var w = 250, bw = 15;
var bs = 5;
var h = markers.length*(bw + bs) + 30 + chart_title.length*20;
var params = {
chtt: escape(chart_title.join('|')),
chts: '000000,10',
cht: 'bhg', // chart type
chd: 't:' + data.join(','), // data set
chds: min + ',' + max, // max/min of data
chxt: 'x', // label axes
chxl: '0:|' + labels.join('|'), // labels
chsp: '0,1',
chm: markers.join('|'), // test names
chbh: [bw, 0, bs].join(','), // bar widths
// chf: 'bg,lg,0,eeeeee,0,eeeeee,.5,ffffff,1', // gradient
chs: w + 'x' + h
};
return 'http://chart.apis.google.com/chart?' + jsl.join(params, '=', '&');
}
};
JSLitmus._init();
})();
\ No newline at end of file
architecture-examples/backbone/js/libs/underscore-1.1.6.js → architecture-examples/backbone/js/libs/underscore.js
View file @ 7405c80f
// Underscore.js 1.1.6
// (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
// 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.
......@@ -48,36 +48,39 @@
// Create a safe reference to the Underscore object for use below.
var _ = function(obj) { return new wrapper(obj); };
// Export the Underscore object for **CommonJS**, with backwards-compatibility
// for the old `require()` API. If we're not in CommonJS, add `_` to the
// global object.
if (typeof module !== 'undefined' && module.exports) {
module.exports = _;
_._ = _;
// 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._ = _;
root['_'] = _;
}
// Current version.
_.VERSION = '1.1.6';
_.VERSION = '1.3.1';
// Collection Functions
// --------------------
// The cornerstone, an `each` implementation, aka `forEach`.
// Handles objects implementing `forEach`, arrays, and raw objects.
// 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 (_.isNumber(obj.length)) {
} else if (obj.length === +obj.length) {
for (var i = 0, l = obj.length; i < l; i++) {
if (iterator.call(context, obj[i], i, obj) === breaker) return;
if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
}
} else {
for (var key in obj) {
if (hasOwnProperty.call(obj, key)) {
if (_.has(obj, key)) {
if (iterator.call(context, obj[key], key, obj) === breaker) return;
}
}
......@@ -86,47 +89,50 @@
// Return the results of applying the iterator to each element.
// Delegates to **ECMAScript 5**'s native `map` if available.
_.map = function(obj, iterator, context) {
_.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 = memo !== void 0;
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 && index === 0) {
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");
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 memo !== void 0 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
}
var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
return _.reduce(reversed, iterator, memo, context);
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`.
......@@ -186,9 +192,9 @@
if (obj == null) return result;
if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
each(obj, function(value, index, list) {
if (result = iterator.call(context, value, index, list)) return breaker;
if (result || (result = iterator.call(context, value, index, list))) return breaker;
});
return result;
return !!result;
};
// Determine if a given value is included in the array or object using `===`.
......@@ -197,8 +203,8 @@
var found = false;
if (obj == null) return found;
if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
any(obj, function(value) {
if (found = value === target) return true;
found = any(obj, function(value) {
return value === target;
});
return found;
};
......@@ -207,7 +213,7 @@
_.invoke = function(obj, method) {
var args = slice.call(arguments, 2);
return _.map(obj, function(value) {
return (method.call ? method || value : value[method]).apply(value, args);
return (_.isFunction(method) ? method || value : value[method]).apply(value, args);
});
};
......@@ -219,6 +225,7 @@
// 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;
......@@ -230,6 +237,7 @@
// 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;
......@@ -238,6 +246,21 @@
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) {
......@@ -251,6 +274,18 @@
}), '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) {
......@@ -267,7 +302,7 @@
_.toArray = function(iterable) {
if (!iterable) return [];
if (iterable.toArray) return iterable.toArray();
if (_.isArray(iterable)) return iterable;
if (_.isArray(iterable)) return slice.call(iterable);
if (_.isArguments(iterable)) return slice.call(iterable);
return _.values(iterable);
};
......@@ -287,6 +322,24 @@
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**
......@@ -295,20 +348,15 @@
return slice.call(array, (index == null) || guard ? 1 : index);
};
// Get the last element of an array.
_.last = function(array) {
return array[array.length - 1];
};
// 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) {
_.flatten = function(array, shallow) {
return _.reduce(array, function(memo, value) {
if (_.isArray(value)) return memo.concat(_.flatten(value));
if (_.isArray(value)) return memo.concat(shallow ? value : _.flatten(value));
memo[memo.length] = value;
return memo;
}, []);
......@@ -316,23 +364,34 @@
// Return a version of the array that does not contain the specified value(s).
_.without = function(array) {
var values = slice.call(arguments, 1);
return _.filter(array, function(value){ return !_.include(values, value); });
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) {
return _.reduce(array, function(memo, el, i) {
if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo[memo.length] = el;
_.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.
_.intersect = function(array) {
// 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) {
......@@ -341,6 +400,13 @@
});
};
// 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() {
......@@ -365,17 +431,16 @@
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 (array[i] === item) return i;
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 (array[i] === item) return i;
while (i--) if (i in array && array[i] === item) return i;
return -1;
};
......@@ -404,15 +469,25 @@
// 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(func, obj) {
_.bind = function bind(func, context) {
var bound, args;
if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
var args = slice.call(arguments, 2);
return function() {
return func.apply(obj, args.concat(slice.call(arguments)));
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;
};
};
......@@ -431,7 +506,7 @@
hasher || (hasher = _.identity);
return function() {
var key = hasher.apply(this, arguments);
return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
};
};
......@@ -448,31 +523,43 @@
return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
};
// Internal function used to implement `_.throttle` and `_.debounce`.
var limit = function(func, wait, debounce) {
var timeout;
// 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() {
var context = this, args = arguments;
var throttler = function() {
context = this; args = arguments;
var later = function() {
timeout = null;
func.apply(context, args);
if (more) func.apply(context, args);
whenDone();
};
if (debounce) clearTimeout(timeout);
if (debounce || !timeout) timeout = setTimeout(throttler, wait);
if (!timeout) timeout = setTimeout(later, wait);
if (throttling) {
more = true;
} else {
func.apply(context, args);
}
whenDone();
throttling = true;
};
};
// Returns a function, that, when invoked, will only be triggered at most once
// during a given window of time.
_.throttle = function(func, wait) {
return limit(func, wait, false);
};
// 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) {
return limit(func, wait, true);
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
......@@ -491,7 +578,7 @@
// conditionally execute the original function.
_.wrap = function(func, wrapper) {
return function() {
var args = [func].concat(slice.call(arguments));
var args = [func].concat(slice.call(arguments, 0));
return wrapper.apply(this, args);
};
};
......@@ -499,10 +586,10 @@
// 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 = slice.call(arguments);
var funcs = arguments;
return function() {
var args = slice.call(arguments);
for (var i=funcs.length-1; i >= 0; i--) {
var args = arguments;
for (var i = funcs.length - 1; i >= 0; i--) {
args = [funcs[i].apply(this, args)];
}
return args[0];
......@@ -511,12 +598,12 @@
// 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
// ----------------
......@@ -525,7 +612,7 @@
_.keys = nativeKeys || function(obj) {
if (obj !== Object(obj)) throw new TypeError('Invalid object');
var keys = [];
for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
return keys;
};
......@@ -537,14 +624,18 @@
// Return a sorted list of the function names available on the object.
// Aliased as `methods`
_.functions = _.methods = function(obj) {
return _.filter(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
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) {
if (source[prop] !== void 0) obj[prop] = source[prop];
obj[prop] = source[prop];
}
});
return obj;
......@@ -562,6 +653,7 @@
// Create a (shallow-cloned) duplicate of an object.
_.clone = function(obj) {
if (!_.isObject(obj)) return obj;
return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
};
......@@ -573,49 +665,104 @@
return obj;
};
// Perform a deep comparison to check if two objects are equal.
_.isEqual = function(a, b) {
// Check object identity.
if (a === b) return true;
// Different types?
var atype = typeof(a), btype = typeof(b);
if (atype != btype) return false;
// Basic equality test (watch out for coercions).
if (a == b) return true;
// One is falsy and the other truthy.
if ((!a && b) || (a && !b)) return false;
// 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;
// One of them implements an isEqual()?
if (a.isEqual) return a.isEqual(b);
// Check dates' integer values.
if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
// Both are NaN?
if (_.isNaN(a) && _.isNaN(b)) return false;
// Compare regular expressions.
if (_.isRegExp(a) && _.isRegExp(b))
return a.source === b.source &&
a.global === b.global &&
a.ignoreCase === b.ignoreCase &&
a.multiline === b.multiline;
// If a is not an object by this point, we can't handle it.
if (atype !== 'object') return false;
// Check for different array lengths before comparing contents.
if (a.length && (a.length !== b.length)) return false;
// Nothing else worked, deep compare the contents.
var aKeys = _.keys(a), bKeys = _.keys(b);
// Different object sizes?
if (aKeys.length != bKeys.length) return false;
// Recursive comparison of contents.
for (var key in a) if (!(key in b) || !_.isEqual(a[key], b[key])) return false;
return true;
// 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 or object empty?
// 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 (hasOwnProperty.call(obj, key)) return false;
for (var key in obj) if (_.has(obj, key)) return false;
return true;
};
......@@ -627,48 +774,58 @@
// Is a given value an array?
// Delegates to ECMA5's native Array.isArray
_.isArray = nativeIsArray || function(obj) {
return toString.call(obj) === '[object Array]';
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 !!(obj && hasOwnProperty.call(obj, 'callee'));
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 !!(obj && obj.constructor && obj.call && obj.apply);
return toString.call(obj) == '[object Function]';
};
// Is a given value a string?
_.isString = function(obj) {
return !!(obj === '' || (obj && obj.charCodeAt && obj.substr));
return toString.call(obj) == '[object String]';
};
// Is a given value a number?
_.isNumber = function(obj) {
return !!(obj === 0 || (obj && obj.toExponential && obj.toFixed));
return toString.call(obj) == '[object Number]';
};
// Is the given value `NaN`? `NaN` happens to be the only value in JavaScript
// that does not equal itself.
// 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;
return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
};
// Is a given value a date?
_.isDate = function(obj) {
return !!(obj && obj.getTimezoneOffset && obj.setUTCFullYear);
return toString.call(obj) == '[object Date]';
};
// Is the given value a regular expression?
_.isRegExp = function(obj) {
return !!(obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false));
return toString.call(obj) == '[object RegExp]';
};
// Is a given value equal to null?
......@@ -681,6 +838,11 @@
return obj === void 0;
};
// Has own property?
_.has = function(obj, key) {
return hasOwnProperty.call(obj, key);
};
// Utility Functions
// -----------------
......@@ -701,6 +863,11 @@
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) {
......@@ -721,7 +888,19 @@
// following template settings to use alternative delimiters.
_.templateSettings = {
evaluate : /<%([\s\S]+?)%>/g,
interpolate : /<%=([\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.
......@@ -733,19 +912,29 @@
'with(obj||{}){__p.push(\'' +
str.replace(/\\/g, '\\\\')
.replace(/'/g, "\\'")
.replace(c.interpolate, function(match, code) {
return "'," + code.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 || null, function(match, code) {
return "');" + code.replace(/\\'/g, "'")
.replace(/[\r\n\t]/g, ' ') + "__p.push('";
.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);
return data ? func(data) : func;
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
......@@ -780,8 +969,11 @@
each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
var method = ArrayProto[name];
wrapper.prototype[name] = function() {
method.apply(this._wrapped, arguments);
return result(this._wrapped, this._chain);
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);
};
});
......@@ -804,4 +996,4 @@
return this._wrapped;
};
})();
}).call(this);
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