Move common libs to libs/common

This commit is contained in:
Labrys of Knossos 2018-12-16 13:30:24 -05:00
commit 1f4bd41bcc
1612 changed files with 962 additions and 10 deletions

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# -*- coding: utf-8 -*-
# This file is part of beets.
# Copyright 2016, Adrian Sampson.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
"""A Web interface to beets."""
from __future__ import division, absolute_import, print_function
from beets.plugins import BeetsPlugin
from beets import ui
from beets import util
import beets.library
import flask
from flask import g
from werkzeug.routing import BaseConverter, PathConverter
import os
from unidecode import unidecode
import json
import base64
# Utilities.
def _rep(obj, expand=False):
"""Get a flat -- i.e., JSON-ish -- representation of a beets Item or
Album object. For Albums, `expand` dictates whether tracks are
included.
"""
out = dict(obj)
if isinstance(obj, beets.library.Item):
if app.config.get('INCLUDE_PATHS', False):
out['path'] = util.displayable_path(out['path'])
else:
del out['path']
# Filter all bytes attributes and convert them to strings.
for key, value in out.items():
if isinstance(out[key], bytes):
out[key] = base64.b64encode(value).decode('ascii')
# Get the size (in bytes) of the backing file. This is useful
# for the Tomahawk resolver API.
try:
out['size'] = os.path.getsize(util.syspath(obj.path))
except OSError:
out['size'] = 0
return out
elif isinstance(obj, beets.library.Album):
del out['artpath']
if expand:
out['items'] = [_rep(item) for item in obj.items()]
return out
def json_generator(items, root, expand=False):
"""Generator that dumps list of beets Items or Albums as JSON
:param root: root key for JSON
:param items: list of :class:`Item` or :class:`Album` to dump
:param expand: If true every :class:`Album` contains its items in the json
representation
:returns: generator that yields strings
"""
yield '{"%s":[' % root
first = True
for item in items:
if first:
first = False
else:
yield ','
yield json.dumps(_rep(item, expand=expand))
yield ']}'
def is_expand():
"""Returns whether the current request is for an expanded response."""
return flask.request.args.get('expand') is not None
def resource(name):
"""Decorates a function to handle RESTful HTTP requests for a resource.
"""
def make_responder(retriever):
def responder(ids):
entities = [retriever(id) for id in ids]
entities = [entity for entity in entities if entity]
if len(entities) == 1:
return flask.jsonify(_rep(entities[0], expand=is_expand()))
elif entities:
return app.response_class(
json_generator(entities, root=name),
mimetype='application/json'
)
else:
return flask.abort(404)
responder.__name__ = 'get_{0}'.format(name)
return responder
return make_responder
def resource_query(name):
"""Decorates a function to handle RESTful HTTP queries for resources.
"""
def make_responder(query_func):
def responder(queries):
return app.response_class(
json_generator(
query_func(queries),
root='results', expand=is_expand()
),
mimetype='application/json'
)
responder.__name__ = 'query_{0}'.format(name)
return responder
return make_responder
def resource_list(name):
"""Decorates a function to handle RESTful HTTP request for a list of
resources.
"""
def make_responder(list_all):
def responder():
return app.response_class(
json_generator(list_all(), root=name, expand=is_expand()),
mimetype='application/json'
)
responder.__name__ = 'all_{0}'.format(name)
return responder
return make_responder
def _get_unique_table_field_values(model, field, sort_field):
""" retrieve all unique values belonging to a key from a model """
if field not in model.all_keys() or sort_field not in model.all_keys():
raise KeyError
with g.lib.transaction() as tx:
rows = tx.query('SELECT DISTINCT "{0}" FROM "{1}" ORDER BY "{2}"'
.format(field, model._table, sort_field))
return [row[0] for row in rows]
class IdListConverter(BaseConverter):
"""Converts comma separated lists of ids in urls to integer lists.
"""
def to_python(self, value):
ids = []
for id in value.split(','):
try:
ids.append(int(id))
except ValueError:
pass
return ids
def to_url(self, value):
return ','.join(value)
class QueryConverter(PathConverter):
"""Converts slash separated lists of queries in the url to string list.
"""
def to_python(self, value):
return value.split('/')
def to_url(self, value):
return ','.join(value)
class EverythingConverter(PathConverter):
regex = '.*?'
# Flask setup.
app = flask.Flask(__name__)
app.url_map.converters['idlist'] = IdListConverter
app.url_map.converters['query'] = QueryConverter
app.url_map.converters['everything'] = EverythingConverter
@app.before_request
def before_request():
g.lib = app.config['lib']
# Items.
@app.route('/item/<idlist:ids>')
@resource('items')
def get_item(id):
return g.lib.get_item(id)
@app.route('/item/')
@app.route('/item/query/')
@resource_list('items')
def all_items():
return g.lib.items()
@app.route('/item/<int:item_id>/file')
def item_file(item_id):
item = g.lib.get_item(item_id)
# On Windows under Python 2, Flask wants a Unicode path. On Python 3, it
# *always* wants a Unicode path.
if os.name == 'nt':
item_path = util.syspath(item.path)
else:
item_path = util.py3_path(item.path)
try:
unicode_item_path = util.text_string(item.path)
except (UnicodeDecodeError, UnicodeEncodeError):
unicode_item_path = util.displayable_path(item.path)
base_filename = os.path.basename(unicode_item_path)
try:
# Imitate http.server behaviour
base_filename.encode("latin-1", "strict")
except UnicodeEncodeError:
safe_filename = unidecode(base_filename)
else:
safe_filename = base_filename
response = flask.send_file(
item_path,
as_attachment=True,
attachment_filename=safe_filename
)
response.headers['Content-Length'] = os.path.getsize(item_path)
return response
@app.route('/item/query/<query:queries>')
@resource_query('items')
def item_query(queries):
return g.lib.items(queries)
@app.route('/item/path/<everything:path>')
def item_at_path(path):
query = beets.library.PathQuery('path', path.encode('utf-8'))
item = g.lib.items(query).get()
if item:
return flask.jsonify(_rep(item))
else:
return flask.abort(404)
@app.route('/item/values/<string:key>')
def item_unique_field_values(key):
sort_key = flask.request.args.get('sort_key', key)
try:
values = _get_unique_table_field_values(beets.library.Item, key,
sort_key)
except KeyError:
return flask.abort(404)
return flask.jsonify(values=values)
# Albums.
@app.route('/album/<idlist:ids>')
@resource('albums')
def get_album(id):
return g.lib.get_album(id)
@app.route('/album/')
@app.route('/album/query/')
@resource_list('albums')
def all_albums():
return g.lib.albums()
@app.route('/album/query/<query:queries>')
@resource_query('albums')
def album_query(queries):
return g.lib.albums(queries)
@app.route('/album/<int:album_id>/art')
def album_art(album_id):
album = g.lib.get_album(album_id)
if album and album.artpath:
return flask.send_file(album.artpath.decode())
else:
return flask.abort(404)
@app.route('/album/values/<string:key>')
def album_unique_field_values(key):
sort_key = flask.request.args.get('sort_key', key)
try:
values = _get_unique_table_field_values(beets.library.Album, key,
sort_key)
except KeyError:
return flask.abort(404)
return flask.jsonify(values=values)
# Artists.
@app.route('/artist/')
def all_artists():
with g.lib.transaction() as tx:
rows = tx.query("SELECT DISTINCT albumartist FROM albums")
all_artists = [row[0] for row in rows]
return flask.jsonify(artist_names=all_artists)
# Library information.
@app.route('/stats')
def stats():
with g.lib.transaction() as tx:
item_rows = tx.query("SELECT COUNT(*) FROM items")
album_rows = tx.query("SELECT COUNT(*) FROM albums")
return flask.jsonify({
'items': item_rows[0][0],
'albums': album_rows[0][0],
})
# UI.
@app.route('/')
def home():
return flask.render_template('index.html')
# Plugin hook.
class WebPlugin(BeetsPlugin):
def __init__(self):
super(WebPlugin, self).__init__()
self.config.add({
'host': u'127.0.0.1',
'port': 8337,
'cors': '',
'cors_supports_credentials': False,
'reverse_proxy': False,
'include_paths': False,
})
def commands(self):
cmd = ui.Subcommand('web', help=u'start a Web interface')
cmd.parser.add_option(u'-d', u'--debug', action='store_true',
default=False, help=u'debug mode')
def func(lib, opts, args):
args = ui.decargs(args)
if args:
self.config['host'] = args.pop(0)
if args:
self.config['port'] = int(args.pop(0))
app.config['lib'] = lib
# Normalizes json output
app.config['JSONIFY_PRETTYPRINT_REGULAR'] = False
app.config['INCLUDE_PATHS'] = self.config['include_paths']
# Enable CORS if required.
if self.config['cors']:
self._log.info(u'Enabling CORS with origin: {0}',
self.config['cors'])
from flask.ext.cors import CORS
app.config['CORS_ALLOW_HEADERS'] = "Content-Type"
app.config['CORS_RESOURCES'] = {
r"/*": {"origins": self.config['cors'].get(str)}
}
CORS(
app,
supports_credentials=self.config[
'cors_supports_credentials'
].get(bool)
)
# Allow serving behind a reverse proxy
if self.config['reverse_proxy']:
app.wsgi_app = ReverseProxied(app.wsgi_app)
# Start the web application.
app.run(host=self.config['host'].as_str(),
port=self.config['port'].get(int),
debug=opts.debug, threaded=True)
cmd.func = func
return [cmd]
class ReverseProxied(object):
'''Wrap the application in this middleware and configure the
front-end server to add these headers, to let you quietly bind
this to a URL other than / and to an HTTP scheme that is
different than what is used locally.
In nginx:
location /myprefix {
proxy_pass http://192.168.0.1:5001;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Scheme $scheme;
proxy_set_header X-Script-Name /myprefix;
}
From: http://flask.pocoo.org/snippets/35/
:param app: the WSGI application
'''
def __init__(self, app):
self.app = app
def __call__(self, environ, start_response):
script_name = environ.get('HTTP_X_SCRIPT_NAME', '')
if script_name:
environ['SCRIPT_NAME'] = script_name
path_info = environ['PATH_INFO']
if path_info.startswith(script_name):
environ['PATH_INFO'] = path_info[len(script_name):]
scheme = environ.get('HTTP_X_SCHEME', '')
if scheme:
environ['wsgi.url_scheme'] = scheme
return self.app(environ, start_response)

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body {
font-family: Helvetica, Arial, sans-serif;
}
#header {
position: fixed;
left: 0;
right: 0;
top: 0;
height: 36px;
color: white;
cursor: default;
/* shadowy border */
box-shadow: 0 0 20px #999;
-webkit-box-shadow: 0 0 20px #999;
-moz-box-shadow: 0 0 20px #999;
/* background gradient */
background: #0e0e0e;
background: -moz-linear-gradient(top, #6b6b6b 0%, #0e0e0e 100%);
background: -webkit-linear-gradient(top, #6b6b6b 0%,#0e0e0e 100%);
}
#header h1 {
font-size: 1.1em;
font-weight: bold;
color: white;
margin: 0.35em;
float: left;
}
#entities {
width: 17em;
position: fixed;
top: 36px;
left: 0;
bottom: 0;
margin: 0;
z-index: 1;
background: #dde4eb;
/* shadowy border */
box-shadow: 0 0 20px #666;
-webkit-box-shadow: 0 0 20px #666;
-moz-box-shadow: 0 0 20px #666;
}
#queryForm {
display: block;
text-align: center;
margin: 0.25em 0;
}
#query {
width: 95%;
font-size: 1em;
}
#entities ul {
width: 17em;
position: fixed;
top: 36px;
left: 0;
bottom: 0;
margin: 2.2em 0 0 0;
padding: 0;
overflow-y: auto;
overflow-x: hidden;
}
#entities ul li {
list-style: none;
padding: 4px 8px;
margin: 0;
cursor: default;
}
#entities ul li.selected {
background: #7abcff;
background: -moz-linear-gradient(top, #7abcff 0%, #60abf8 44%, #4096ee 100%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#7abcff), color-stop(44%,#60abf8), color-stop(100%,#4096ee));
color: white;
}
#entities ul li .playing {
margin-left: 5px;
font-size: 0.9em;
}
#main-detail, #extra-detail {
position: fixed;
left: 17em;
margin: 1.0em 0 0 1.5em;
}
#main-detail {
top: 36px;
height: 98px;
}
#main-detail .artist, #main-detail .album, #main-detail .title {
display: block;
}
#main-detail .title {
font-size: 1.3em;
font-weight: bold;
}
#main-detail .albumtitle {
font-style: italic;
}
#extra-detail {
overflow-x: hidden;
overflow-y: auto;
top: 134px;
bottom: 0;
right: 0;
}
/*Fix for correctly displaying line breaks in lyrics*/
#extra-detail .lyrics {
white-space: pre-wrap;
}
#extra-detail dl dt, #extra-detail dl dd {
list-style: none;
margin: 0;
padding: 0;
}
#extra-detail dl dt {
width: 10em;
float: left;
text-align: right;
font-weight: bold;
clear: both;
}
#extra-detail dl dd {
margin-left: 10.5em;
}
#player {
float: left;
width: 150px;
height: 36px;
}
#player .play, #player .pause, #player .disabled {
-webkit-appearance: none;
font-size: 1em;
font-family: Helvetica, Arial, sans-serif;
background: none;
border: none;
color: white;
padding: 5px;
margin: 0;
text-align: center;
width: 36px;
height: 36px;
}
#player .disabled {
color: #666;
}

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// Format times as minutes and seconds.
var timeFormat = function(secs) {
if (secs == undefined || isNaN(secs)) {
return '0:00';
}
secs = Math.round(secs);
var mins = '' + Math.floor(secs / 60);
secs = '' + (secs % 60);
if (secs.length < 2) {
secs = '0' + secs;
}
return mins + ':' + secs;
}
// jQuery extension encapsulating event hookups for audio element controls.
$.fn.player = function(debug) {
// Selected element should contain an HTML5 Audio element.
var audio = $('audio', this).get(0);
// Control elements that may be present, identified by class.
var playBtn = $('.play', this);
var pauseBtn = $('.pause', this);
var disabledInd = $('.disabled', this);
var timesEl = $('.times', this);
var curTimeEl = $('.currentTime', this);
var totalTimeEl = $('.totalTime', this);
var sliderPlayedEl = $('.slider .played', this);
var sliderLoadedEl = $('.slider .loaded', this);
// Button events.
playBtn.click(function() {
audio.play();
});
pauseBtn.click(function(ev) {
audio.pause();
});
// Utilities.
var timePercent = function(cur, total) {
if (cur == undefined || isNaN(cur) ||
total == undefined || isNaN(total) || total == 0) {
return 0;
}
var ratio = cur / total;
if (ratio > 1.0) {
ratio = 1.0;
}
return (Math.round(ratio * 10000) / 100) + '%';
}
// Event helpers.
var dbg = function(msg) {
if (debug)
console.log(msg);
}
var showState = function() {
if (audio.duration == undefined || isNaN(audio.duration)) {
playBtn.hide();
pauseBtn.hide();
disabledInd.show();
timesEl.hide();
} else if (audio.paused) {
playBtn.show();
pauseBtn.hide();
disabledInd.hide();
timesEl.show();
} else {
playBtn.hide();
pauseBtn.show();
disabledInd.hide();
timesEl.show();
}
}
var showTimes = function() {
curTimeEl.text(timeFormat(audio.currentTime));
totalTimeEl.text(timeFormat(audio.duration));
sliderPlayedEl.css('width',
timePercent(audio.currentTime, audio.duration));
// last time buffered
var bufferEnd = 0;
for (var i = 0; i < audio.buffered.length; ++i) {
if (audio.buffered.end(i) > bufferEnd)
bufferEnd = audio.buffered.end(i);
}
sliderLoadedEl.css('width',
timePercent(bufferEnd, audio.duration));
}
// Initialize controls.
showState();
showTimes();
// Bind events.
$('audio', this).bind({
playing: function() {
dbg('playing');
showState();
},
pause: function() {
dbg('pause');
showState();
},
ended: function() {
dbg('ended');
showState();
},
progress: function() {
dbg('progress ' + audio.buffered);
},
timeupdate: function() {
dbg('timeupdate ' + audio.currentTime);
showTimes();
},
durationchange: function() {
dbg('durationchange ' + audio.duration);
showState();
showTimes();
},
loadeddata: function() {
dbg('loadeddata');
},
loadedmetadata: function() {
dbg('loadedmetadata');
}
});
}
// Simple selection disable for jQuery.
// Cut-and-paste from:
// http://stackoverflow.com/questions/2700000
$.fn.disableSelection = function() {
$(this).attr('unselectable', 'on')
.css('-moz-user-select', 'none')
.each(function() {
this.onselectstart = function() { return false; };
});
};
$(function() {
// Routes.
var BeetsRouter = Backbone.Router.extend({
routes: {
"item/query/:query": "itemQuery",
},
itemQuery: function(query) {
var queryURL = query.split(/\s+/).map(encodeURIComponent).join('/');
$.getJSON('item/query/' + queryURL, function(data) {
var models = _.map(
data['results'],
function(d) { return new Item(d); }
);
var results = new Items(models);
app.showItems(results);
});
}
});
var router = new BeetsRouter();
// Model.
var Item = Backbone.Model.extend({
urlRoot: 'item'
});
var Items = Backbone.Collection.extend({
model: Item
});
// Item views.
var ItemEntryView = Backbone.View.extend({
tagName: "li",
template: _.template($('#item-entry-template').html()),
events: {
'click': 'select',
'dblclick': 'play'
},
initialize: function() {
this.playing = false;
},
render: function() {
$(this.el).html(this.template(this.model.toJSON()));
this.setPlaying(this.playing);
return this;
},
select: function() {
app.selectItem(this);
},
play: function() {
app.playItem(this.model);
},
setPlaying: function(val) {
this.playing = val;
if (val)
this.$('.playing').show();
else
this.$('.playing').hide();
}
});
//Holds Title, Artist, Album etc.
var ItemMainDetailView = Backbone.View.extend({
tagName: "div",
template: _.template($('#item-main-detail-template').html()),
events: {
'click .play': 'play',
},
render: function() {
$(this.el).html(this.template(this.model.toJSON()));
return this;
},
play: function() {
app.playItem(this.model);
}
});
// Holds Track no., Format, MusicBrainz link, Lyrics, Comments etc.
var ItemExtraDetailView = Backbone.View.extend({
tagName: "div",
template: _.template($('#item-extra-detail-template').html()),
render: function() {
$(this.el).html(this.template(this.model.toJSON()));
return this;
}
});
// Main app view.
var AppView = Backbone.View.extend({
el: $('body'),
events: {
'submit #queryForm': 'querySubmit',
},
querySubmit: function(ev) {
ev.preventDefault();
router.navigate('item/query/' + encodeURIComponent($('#query').val()), true);
},
initialize: function() {
this.playingItem = null;
this.shownItems = null;
// Not sure why these events won't bind automatically.
this.$('audio').bind({
'play': _.bind(this.audioPlay, this),
'pause': _.bind(this.audioPause, this),
'ended': _.bind(this.audioEnded, this)
});
},
showItems: function(items) {
this.shownItems = items;
$('#results').empty();
items.each(function(item) {
var view = new ItemEntryView({model: item});
item.entryView = view;
$('#results').append(view.render().el);
});
},
selectItem: function(view) {
// Mark row as selected.
$('#results li').removeClass("selected");
$(view.el).addClass("selected");
// Show main and extra detail.
var mainDetailView = new ItemMainDetailView({model: view.model});
$('#main-detail').empty().append(mainDetailView.render().el);
var extraDetailView = new ItemExtraDetailView({model: view.model});
$('#extra-detail').empty().append(extraDetailView.render().el);
},
playItem: function(item) {
var url = 'item/' + item.get('id') + '/file';
$('#player audio').attr('src', url);
$('#player audio').get(0).play();
if (this.playingItem != null) {
this.playingItem.entryView.setPlaying(false);
}
item.entryView.setPlaying(true);
this.playingItem = item;
},
audioPause: function() {
this.playingItem.entryView.setPlaying(false);
},
audioPlay: function() {
if (this.playingItem != null)
this.playingItem.entryView.setPlaying(true);
},
audioEnded: function() {
this.playingItem.entryView.setPlaying(false);
// Try to play the next track.
var idx = this.shownItems.indexOf(this.playingItem);
if (idx == -1) {
// Not in current list.
return;
}
var nextIdx = idx + 1;
if (nextIdx >= this.shownItems.size()) {
// End of list.
return;
}
this.playItem(this.shownItems.at(nextIdx));
}
});
var app = new AppView();
// App setup.
Backbone.history.start({pushState: false});
// Disable selection on UI elements.
$('#entities ul').disableSelection();
$('#header').disableSelection();
// Audio player setup.
$('#player').player();
});

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// Underscore.js 1.2.2
// (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
// Underscore is freely distributable under the MIT license.
// Portions of Underscore are inspired or borrowed from Prototype,
// Oliver Steele's Functional, and John Resig's Micro-Templating.
// For all details and documentation:
// http://documentcloud.github.com/underscore
(function() {
// Baseline setup
// --------------
// Establish the root object, `window` in the browser, or `global` on the server.
var root = this;
// Save the previous value of the `_` variable.
var previousUnderscore = root._;
// Establish the object that gets returned to break out of a loop iteration.
var breaker = {};
// Save bytes in the minified (but not gzipped) version:
var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
// Create quick reference variables for speed access to core prototypes.
var slice = ArrayProto.slice,
unshift = ArrayProto.unshift,
toString = ObjProto.toString,
hasOwnProperty = ObjProto.hasOwnProperty;
// All **ECMAScript 5** native function implementations that we hope to use
// are declared here.
var
nativeForEach = ArrayProto.forEach,
nativeMap = ArrayProto.map,
nativeReduce = ArrayProto.reduce,
nativeReduceRight = ArrayProto.reduceRight,
nativeFilter = ArrayProto.filter,
nativeEvery = ArrayProto.every,
nativeSome = ArrayProto.some,
nativeIndexOf = ArrayProto.indexOf,
nativeLastIndexOf = ArrayProto.lastIndexOf,
nativeIsArray = Array.isArray,
nativeKeys = Object.keys,
nativeBind = FuncProto.bind;
// Create a safe reference to the Underscore object for use below.
var _ = function(obj) { return new wrapper(obj); };
// Export the Underscore object for **Node.js** and **"CommonJS"**, with
// backwards-compatibility for the old `require()` API. If we're not in
// CommonJS, add `_` to the global object.
if (typeof exports !== 'undefined') {
if (typeof module !== 'undefined' && module.exports) {
exports = module.exports = _;
}
exports._ = _;
} else if (typeof define === 'function' && define.amd) {
// Register as a named module with AMD.
define('underscore', function() {
return _;
});
} else {
// Exported as a string, for Closure Compiler "advanced" mode.
root['_'] = _;
}
// Current version.
_.VERSION = '1.2.2';
// Collection Functions
// --------------------
// The cornerstone, an `each` implementation, aka `forEach`.
// Handles objects with the built-in `forEach`, arrays, and raw objects.
// Delegates to **ECMAScript 5**'s native `forEach` if available.
var each = _.each = _.forEach = function(obj, iterator, context) {
if (obj == null) return;
if (nativeForEach && obj.forEach === nativeForEach) {
obj.forEach(iterator, context);
} else if (obj.length === +obj.length) {
for (var i = 0, l = obj.length; i < l; i++) {
if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
}
} else {
for (var key in obj) {
if (hasOwnProperty.call(obj, key)) {
if (iterator.call(context, obj[key], key, obj) === breaker) return;
}
}
}
};
// Return the results of applying the iterator to each element.
// Delegates to **ECMAScript 5**'s native `map` if available.
_.map = 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);
});
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;
if (obj == null) obj = [];
if (nativeReduce && obj.reduce === nativeReduce) {
if (context) iterator = _.bind(iterator, context);
return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
}
each(obj, function(value, index, list) {
if (!initial) {
memo = value;
initial = true;
} else {
memo = iterator.call(context, memo, value, index, list);
}
});
if (!initial) throw new TypeError("Reduce of empty array with no initial value");
return memo;
};
// The right-associative version of reduce, also known as `foldr`.
// Delegates to **ECMAScript 5**'s native `reduceRight` if available.
_.reduceRight = _.foldr = function(obj, iterator, memo, context) {
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);
}
var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
return _.reduce(reversed, iterator, memo, context);
};
// Return the first value which passes a truth test. Aliased as `detect`.
_.find = _.detect = function(obj, iterator, context) {
var result;
any(obj, function(value, index, list) {
if (iterator.call(context, value, index, list)) {
result = value;
return true;
}
});
return result;
};
// Return all the elements that pass a truth test.
// Delegates to **ECMAScript 5**'s native `filter` if available.
// Aliased as `select`.
_.filter = _.select = function(obj, iterator, context) {
var results = [];
if (obj == null) return results;
if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
each(obj, function(value, index, list) {
if (iterator.call(context, value, index, list)) results[results.length] = value;
});
return results;
};
// Return all the elements for which a truth test fails.
_.reject = function(obj, iterator, context) {
var results = [];
if (obj == null) return results;
each(obj, function(value, index, list) {
if (!iterator.call(context, value, index, list)) results[results.length] = value;
});
return results;
};
// Determine whether all of the elements match a truth test.
// Delegates to **ECMAScript 5**'s native `every` if available.
// Aliased as `all`.
_.every = _.all = function(obj, iterator, context) {
var result = true;
if (obj == null) return result;
if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
each(obj, function(value, index, list) {
if (!(result = result && iterator.call(context, value, index, list))) return breaker;
});
return result;
};
// Determine if at least one element in the object matches a truth test.
// Delegates to **ECMAScript 5**'s native `some` if available.
// Aliased as `any`.
var any = _.some = _.any = function(obj, iterator, context) {
iterator = iterator || _.identity;
var result = false;
if (obj == null) return result;
if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
each(obj, function(value, index, list) {
if (result || (result = iterator.call(context, value, index, list))) return breaker;
});
return !!result;
};
// Determine if a given value is included in the array or object using `===`.
// Aliased as `contains`.
_.include = _.contains = function(obj, target) {
var found = false;
if (obj == null) return found;
if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
found = any(obj, function(value) {
return value === target;
});
return found;
};
// Invoke a method (with arguments) on every item in a collection.
_.invoke = function(obj, method) {
var args = slice.call(arguments, 2);
return _.map(obj, function(value) {
return (method.call ? method || value : value[method]).apply(value, args);
});
};
// Convenience version of a common use case of `map`: fetching a property.
_.pluck = function(obj, key) {
return _.map(obj, function(value){ return value[key]; });
};
// Return the maximum element or (element-based computation).
_.max = function(obj, iterator, context) {
if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
if (!iterator && _.isEmpty(obj)) return -Infinity;
var result = {computed : -Infinity};
each(obj, function(value, index, list) {
var computed = iterator ? iterator.call(context, value, index, list) : value;
computed >= result.computed && (result = {value : value, computed : computed});
});
return result.value;
};
// Return the minimum element (or element-based computation).
_.min = function(obj, iterator, context) {
if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
if (!iterator && _.isEmpty(obj)) return Infinity;
var result = {computed : Infinity};
each(obj, function(value, index, list) {
var computed = iterator ? iterator.call(context, value, index, list) : value;
computed < result.computed && (result = {value : value, computed : computed});
});
return result.value;
};
// Shuffle an array.
_.shuffle = function(obj) {
var shuffled = [], rand;
each(obj, function(value, index, list) {
if (index == 0) {
shuffled[0] = value;
} else {
rand = Math.floor(Math.random() * (index + 1));
shuffled[index] = shuffled[rand];
shuffled[rand] = value;
}
});
return shuffled;
};
// Sort the object's values by a criterion produced by an iterator.
_.sortBy = function(obj, iterator, context) {
return _.pluck(_.map(obj, function(value, index, list) {
return {
value : value,
criteria : iterator.call(context, value, index, list)
};
}).sort(function(left, right) {
var a = left.criteria, b = right.criteria;
return a < b ? -1 : a > b ? 1 : 0;
}), 'value');
};
// Groups the object's values by a criterion. Pass either a string attribute
// to group by, or a function that returns the criterion.
_.groupBy = function(obj, val) {
var result = {};
var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
each(obj, function(value, index) {
var key = iterator(value, index);
(result[key] || (result[key] = [])).push(value);
});
return result;
};
// Use a comparator function to figure out at what index an object should
// be inserted so as to maintain order. Uses binary search.
_.sortedIndex = function(array, obj, iterator) {
iterator || (iterator = _.identity);
var low = 0, high = array.length;
while (low < high) {
var mid = (low + high) >> 1;
iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
}
return low;
};
// Safely convert anything iterable into a real, live array.
_.toArray = function(iterable) {
if (!iterable) return [];
if (iterable.toArray) return iterable.toArray();
if (_.isArray(iterable)) return slice.call(iterable);
if (_.isArguments(iterable)) return slice.call(iterable);
return _.values(iterable);
};
// Return the number of elements in an object.
_.size = function(obj) {
return _.toArray(obj).length;
};
// Array Functions
// ---------------
// Get the first element of an array. Passing **n** will return the first N
// values in the array. Aliased as `head`. The **guard** check allows it to work
// with `_.map`.
_.first = _.head = function(array, n, guard) {
return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
};
// Returns everything but the last entry of the array. Especcialy useful on
// the arguments object. Passing **n** will return all the values in
// the array, excluding the last N. The **guard** check allows it to work with
// `_.map`.
_.initial = function(array, n, guard) {
return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
};
// Get the last element of an array. Passing **n** will return the last N
// values in the array. The **guard** check allows it to work with `_.map`.
_.last = function(array, n, guard) {
if ((n != null) && !guard) {
return slice.call(array, Math.max(array.length - n, 0));
} else {
return array[array.length - 1];
}
};
// Returns everything but the first entry of the array. Aliased as `tail`.
// Especially useful on the arguments object. Passing an **index** will return
// the rest of the values in the array from that index onward. The **guard**
// check allows it to work with `_.map`.
_.rest = _.tail = function(array, index, guard) {
return slice.call(array, (index == null) || guard ? 1 : index);
};
// Trim out all falsy values from an array.
_.compact = function(array) {
return _.filter(array, function(value){ return !!value; });
};
// Return a completely flattened version of an array.
_.flatten = function(array, shallow) {
return _.reduce(array, function(memo, value) {
if (_.isArray(value)) return memo.concat(shallow ? value : _.flatten(value));
memo[memo.length] = value;
return memo;
}, []);
};
// Return a version of the array that does not contain the specified value(s).
_.without = function(array) {
return _.difference(array, slice.call(arguments, 1));
};
// Produce a duplicate-free version of the array. If the array has already
// been sorted, you have the option of using a faster algorithm.
// Aliased as `unique`.
_.uniq = _.unique = function(array, isSorted, iterator) {
var initial = iterator ? _.map(array, iterator) : array;
var result = [];
_.reduce(initial, function(memo, el, i) {
if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) {
memo[memo.length] = el;
result[result.length] = array[i];
}
return memo;
}, []);
return result;
};
// Produce an array that contains the union: each distinct element from all of
// the passed-in arrays.
_.union = function() {
return _.uniq(_.flatten(arguments, true));
};
// Produce an array that contains every item shared between all the
// passed-in arrays. (Aliased as "intersect" for back-compat.)
_.intersection = _.intersect = function(array) {
var rest = slice.call(arguments, 1);
return _.filter(_.uniq(array), function(item) {
return _.every(rest, function(other) {
return _.indexOf(other, item) >= 0;
});
});
};
// Take the difference between one array and another.
// Only the elements present in just the first array will remain.
_.difference = function(array, other) {
return _.filter(array, function(value){ return !_.include(other, value); });
};
// Zip together multiple lists into a single array -- elements that share
// an index go together.
_.zip = function() {
var args = slice.call(arguments);
var length = _.max(_.pluck(args, 'length'));
var results = new Array(length);
for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
return results;
};
// If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
// we need this function. Return the position of the first occurrence of an
// item in an array, or -1 if the item is not included in the array.
// Delegates to **ECMAScript 5**'s native `indexOf` if available.
// If the array is large and already in sort order, pass `true`
// for **isSorted** to use binary search.
_.indexOf = function(array, item, isSorted) {
if (array == null) return -1;
var i, l;
if (isSorted) {
i = _.sortedIndex(array, item);
return array[i] === item ? i : -1;
}
if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
for (i = 0, l = array.length; i < l; i++) if (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;
return -1;
};
// Generate an integer Array containing an arithmetic progression. A port of
// the native Python `range()` function. See
// [the Python documentation](http://docs.python.org/library/functions.html#range).
_.range = function(start, stop, step) {
if (arguments.length <= 1) {
stop = start || 0;
start = 0;
}
step = arguments[2] || 1;
var len = Math.max(Math.ceil((stop - start) / step), 0);
var idx = 0;
var range = new Array(len);
while(idx < len) {
range[idx++] = start;
start += step;
}
return range;
};
// Function (ahem) Functions
// ------------------
// Reusable constructor function for prototype setting.
var ctor = function(){};
// Create a function bound to a given object (assigning `this`, and arguments,
// optionally). Binding with arguments is also known as `curry`.
// Delegates to **ECMAScript 5**'s native `Function.bind` if available.
// We check for `func.bind` first, to fail fast when `func` is undefined.
_.bind = function bind(func, context) {
var bound, args;
if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
if (!_.isFunction(func)) throw new TypeError;
args = slice.call(arguments, 2);
return bound = function() {
if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
ctor.prototype = func.prototype;
var self = new ctor;
var result = func.apply(self, args.concat(slice.call(arguments)));
if (Object(result) === result) return result;
return self;
};
};
// Bind all of an object's methods to that object. Useful for ensuring that
// all callbacks defined on an object belong to it.
_.bindAll = function(obj) {
var funcs = slice.call(arguments, 1);
if (funcs.length == 0) funcs = _.functions(obj);
each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
return obj;
};
// Memoize an expensive function by storing its results.
_.memoize = function(func, hasher) {
var memo = {};
hasher || (hasher = _.identity);
return function() {
var key = hasher.apply(this, arguments);
return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
};
};
// Delays a function for the given number of milliseconds, and then calls
// it with the arguments supplied.
_.delay = function(func, wait) {
var args = slice.call(arguments, 2);
return setTimeout(function(){ return func.apply(func, args); }, wait);
};
// Defers a function, scheduling it to run after the current call stack has
// cleared.
_.defer = function(func) {
return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
};
// Returns a function, that, when invoked, will only be triggered at most once
// during a given window of time.
_.throttle = function(func, wait) {
var context, args, timeout, throttling, more;
var whenDone = _.debounce(function(){ more = throttling = false; }, wait);
return function() {
context = this; args = arguments;
var later = function() {
timeout = null;
if (more) func.apply(context, args);
whenDone();
};
if (!timeout) timeout = setTimeout(later, wait);
if (throttling) {
more = true;
} else {
func.apply(context, args);
}
whenDone();
throttling = true;
};
};
// Returns a function, that, as long as it continues to be invoked, will not
// be triggered. The function will be called after it stops being called for
// N milliseconds.
_.debounce = function(func, wait) {
var timeout;
return function() {
var context = this, args = arguments;
var later = function() {
timeout = null;
func.apply(context, args);
};
clearTimeout(timeout);
timeout = setTimeout(later, wait);
};
};
// Returns a function that will be executed at most one time, no matter how
// often you call it. Useful for lazy initialization.
_.once = function(func) {
var ran = false, memo;
return function() {
if (ran) return memo;
ran = true;
return memo = func.apply(this, arguments);
};
};
// Returns the first function passed as an argument to the second,
// allowing you to adjust arguments, run code before and after, and
// conditionally execute the original function.
_.wrap = function(func, wrapper) {
return function() {
var args = [func].concat(slice.call(arguments));
return wrapper.apply(this, args);
};
};
// Returns a function that is the composition of a list of functions, each
// consuming the return value of the function that follows.
_.compose = function() {
var funcs = slice.call(arguments);
return function() {
var args = slice.call(arguments);
for (var i = funcs.length - 1; i >= 0; i--) {
args = [funcs[i].apply(this, args)];
}
return args[0];
};
};
// Returns a function that will only be executed after being called N times.
_.after = function(times, func) {
if (times <= 0) return func();
return function() {
if (--times < 1) { return func.apply(this, arguments); }
};
};
// Object Functions
// ----------------
// Retrieve the names of an object's properties.
// Delegates to **ECMAScript 5**'s native `Object.keys`
_.keys = nativeKeys || function(obj) {
if (obj !== Object(obj)) throw new TypeError('Invalid object');
var keys = [];
for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
return keys;
};
// Retrieve the values of an object's properties.
_.values = function(obj) {
return _.map(obj, _.identity);
};
// Return a sorted list of the function names available on the object.
// Aliased as `methods`
_.functions = _.methods = function(obj) {
var names = [];
for (var key in obj) {
if (_.isFunction(obj[key])) names.push(key);
}
return names.sort();
};
// Extend a given object with all the properties in passed-in object(s).
_.extend = function(obj) {
each(slice.call(arguments, 1), function(source) {
for (var prop in source) {
if (source[prop] !== void 0) obj[prop] = source[prop];
}
});
return obj;
};
// Fill in a given object with default properties.
_.defaults = function(obj) {
each(slice.call(arguments, 1), function(source) {
for (var prop in source) {
if (obj[prop] == null) obj[prop] = source[prop];
}
});
return obj;
};
// Create a (shallow-cloned) duplicate of an object.
_.clone = function(obj) {
if (!_.isObject(obj)) return obj;
return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
};
// Invokes interceptor with the obj, and then returns obj.
// The primary purpose of this method is to "tap into" a method chain, in
// order to perform operations on intermediate results within the chain.
_.tap = function(obj, interceptor) {
interceptor(obj);
return obj;
};
// Internal recursive comparison function.
function eq(a, b, stack) {
// Identical objects are equal. `0 === -0`, but they aren't identical.
// See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
if (a === b) return a !== 0 || 1 / a == 1 / b;
// A strict comparison is necessary because `null == undefined`.
if (a == null || b == null) return a === b;
// Unwrap any wrapped objects.
if (a._chain) a = a._wrapped;
if (b._chain) b = b._wrapped;
// Invoke a custom `isEqual` method if one is provided.
if (_.isFunction(a.isEqual)) return a.isEqual(b);
if (_.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 String(a) == String(b);
case '[object Number]':
a = +a;
b = +b;
// `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 (hasOwnProperty.call(a, key)) {
// Count the expected number of properties.
size++;
// Deep compare each member.
if (!(result = hasOwnProperty.call(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 (hasOwnProperty.call(b, key) && !(size--)) break;
}
result = !size;
}
}
// Remove the first object from the stack of traversed objects.
stack.pop();
return result;
}
// Perform a deep comparison to check if two objects are equal.
_.isEqual = function(a, b) {
return eq(a, b, []);
};
// Is a given array, string, or object empty?
// An "empty" object has no enumerable own-properties.
_.isEmpty = function(obj) {
if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
return true;
};
// Is a given value a DOM element?
_.isElement = function(obj) {
return !!(obj && obj.nodeType == 1);
};
// Is a given value an array?
// Delegates to ECMA5's native Array.isArray
_.isArray = nativeIsArray || function(obj) {
return toString.call(obj) == '[object Array]';
};
// Is a given variable an object?
_.isObject = function(obj) {
return obj === Object(obj);
};
// Is a given variable an arguments object?
if (toString.call(arguments) == '[object Arguments]') {
_.isArguments = function(obj) {
return toString.call(obj) == '[object Arguments]';
};
} else {
_.isArguments = function(obj) {
return !!(obj && hasOwnProperty.call(obj, 'callee'));
};
}
// Is a given value a function?
_.isFunction = function(obj) {
return toString.call(obj) == '[object Function]';
};
// Is a given value a string?
_.isString = function(obj) {
return toString.call(obj) == '[object String]';
};
// Is a given value a number?
_.isNumber = function(obj) {
return toString.call(obj) == '[object Number]';
};
// Is the given value `NaN`?
_.isNaN = function(obj) {
// `NaN` is the only value for which `===` is not reflexive.
return obj !== obj;
};
// Is a given value a boolean?
_.isBoolean = function(obj) {
return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
};
// Is a given value a date?
_.isDate = function(obj) {
return toString.call(obj) == '[object Date]';
};
// Is the given value a regular expression?
_.isRegExp = function(obj) {
return toString.call(obj) == '[object RegExp]';
};
// Is a given value equal to null?
_.isNull = function(obj) {
return obj === null;
};
// Is a given variable undefined?
_.isUndefined = function(obj) {
return obj === void 0;
};
// Utility Functions
// -----------------
// Run Underscore.js in *noConflict* mode, returning the `_` variable to its
// previous owner. Returns a reference to the Underscore object.
_.noConflict = function() {
root._ = previousUnderscore;
return this;
};
// Keep the identity function around for default iterators.
_.identity = function(value) {
return value;
};
// Run a function **n** times.
_.times = function (n, iterator, context) {
for (var i = 0; i < n; i++) iterator.call(context, i);
};
// Escape a string for HTML interpolation.
_.escape = function(string) {
return (''+string).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
};
// Add your own custom functions to the Underscore object, ensuring that
// they're correctly added to the OOP wrapper as well.
_.mixin = function(obj) {
each(_.functions(obj), function(name){
addToWrapper(name, _[name] = obj[name]);
});
};
// Generate a unique integer id (unique within the entire client session).
// Useful for temporary DOM ids.
var idCounter = 0;
_.uniqueId = function(prefix) {
var id = idCounter++;
return prefix ? prefix + id : id;
};
// By default, Underscore uses ERB-style template delimiters, change the
// following template settings to use alternative delimiters.
_.templateSettings = {
evaluate : /<%([\s\S]+?)%>/g,
interpolate : /<%=([\s\S]+?)%>/g,
escape : /<%-([\s\S]+?)%>/g
};
// JavaScript micro-templating, similar to John Resig's implementation.
// Underscore templating handles arbitrary delimiters, preserves whitespace,
// and correctly escapes quotes within interpolated code.
_.template = function(str, data) {
var c = _.templateSettings;
var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
'with(obj||{}){__p.push(\'' +
str.replace(/\\/g, '\\\\')
.replace(/'/g, "\\'")
.replace(c.escape, function(match, code) {
return "',_.escape(" + code.replace(/\\'/g, "'") + "),'";
})
.replace(c.interpolate, function(match, code) {
return "'," + code.replace(/\\'/g, "'") + ",'";
})
.replace(c.evaluate || null, function(match, code) {
return "');" + code.replace(/\\'/g, "'")
.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, _) : function(data) { return func(data, _) };
};
// The OOP Wrapper
// ---------------
// If Underscore is called as a function, it returns a wrapped object that
// can be used OO-style. This wrapper holds altered versions of all the
// underscore functions. Wrapped objects may be chained.
var wrapper = function(obj) { this._wrapped = obj; };
// Expose `wrapper.prototype` as `_.prototype`
_.prototype = wrapper.prototype;
// Helper function to continue chaining intermediate results.
var result = function(obj, chain) {
return chain ? _(obj).chain() : obj;
};
// A method to easily add functions to the OOP wrapper.
var addToWrapper = function(name, func) {
wrapper.prototype[name] = function() {
var args = slice.call(arguments);
unshift.call(args, this._wrapped);
return result(func.apply(_, args), this._chain);
};
};
// Add all of the Underscore functions to the wrapper object.
_.mixin(_);
// Add all mutator Array functions to the wrapper.
each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
var method = ArrayProto[name];
wrapper.prototype[name] = function() {
method.apply(this._wrapped, arguments);
return result(this._wrapped, this._chain);
};
});
// Add all accessor Array functions to the wrapper.
each(['concat', 'join', 'slice'], function(name) {
var method = ArrayProto[name];
wrapper.prototype[name] = function() {
return result(method.apply(this._wrapped, arguments), this._chain);
};
});
// Start chaining a wrapped Underscore object.
wrapper.prototype.chain = function() {
this._chain = true;
return this;
};
// Extracts the result from a wrapped and chained object.
wrapper.prototype.value = function() {
return this._wrapped;
};
}).call(this);

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@ -0,0 +1,98 @@
<!DOCTYPE html>
<html>
<head>
<title>beets</title>
<link rel="stylesheet"
href="{{ url_for('static', filename='beets.css') }}" type="text/css">
<script src="{{ url_for('static', filename='jquery.js') }}"></script>
<script src="{{ url_for('static', filename='underscore.js') }}">
</script>
<script src="{{ url_for('static', filename='backbone.js') }}"></script>
<script src="{{ url_for('static', filename='beets.js') }}"></script>
</head>
<body>
<div id="header">
<h1>beets</h1>
<div id="player">
<audio></audio>
<button class="disabled">&#9654;</button>
<button class="play">&#9654;</button>
<button class="pause" style="letter-spacing: 1px;">&#10073;&#10073;</button>
<span class="times">
<span class="currentTime">
</span>
</span>
</div>
</div>
<div id="entities">
<form id="queryForm">
<input type="search" id="query" placeholder="Query">
</form>
<ul id="results">
</ul>
</div>
<div id="main-detail">
</div>
<div id="extra-detail">
</div>
<!-- Templates. -->
<script type="text/template" id="item-entry-template">
<%= title %>
<span class="playing">&#9654;</span>
</script>
<script type="text/template" id="item-main-detail-template">
<span class="artist"><%= artist %></span>
<span class="album">
<span class="albumtitle"><%= album %></span>
<span class="year">(<%= year %>)</span>
</span>
<span class="title"><%= title %></span>
<button class="play">&#9654;</button>
</script>
<script type="text/template" id="item-extra-detail-template">
<dl>
<dt>Track</dt>
<dd><%= track %>/<%= tracktotal %></dd>
<% if (disc) { %>
<dt>Disc</dt>
<dd><%= disc %>/<%= disctotal %></dd>
<% } %>
<dt>Length</dt>
<dd><%= timeFormat(length) %></dd>
<dt>Format</dt>
<dd><%= format %></dd>
<dt>Bitrate</dt>
<dd><%= Math.round(bitrate/1000) %> kbps</dd>
<% if (mb_trackid) { %>
<dt>MusicBrainz entry</dt>
<dd>
<a target="_blank" href="http://musicbrainz.org/recording/<%= mb_trackid %>">view</a>
</dd>
<% } %>
<dt>File</dt>
<dd>
<a target="_blank" class="download" href="item/<%= id %>/file">download</a>
</dd>
<% if (lyrics) { %>
<dt>Lyrics</dt>
<dd class="lyrics"><%= lyrics %></dd>
<% } %>
<% if (comments) { %>
<dt>Comments</dt>
<dd><%= comments %></dd>
<% } %>
</dl>
</script>
</body>
</html>