Remove the annotator.js vendor dependency

In order to avoid heavy refactoring some classes from Annotator were moved over to this codebase.
This includes the class for the `Document` plugin and Annotator’s base class `Delegator`.

The class `Guest` is now responsible for loading the remaining Annotator-style plugin modules.
The base class for `Guest` is now `Delegator` instead of `Annotator`.

src/annotator/delegator.coffee

+$ = require('jquery')
+
+###
+** Adapted from:
+** https://github.com/openannotation/annotator/blob/v1.2.x/src/class.coffee
+**
+** Annotator v1.2.10
+** https://github.com/openannotation/annotator
+**
+** Copyright 2015, the Annotator project contributors.
+** Dual licensed under the MIT and GPLv3 licenses.
+** https://github.com/openannotation/annotator/blob/master/LICENSE
+###
+
+# Public: Delegator is the base class that all of Annotators objects inherit
+# from. It provides basic functionality such as instance options, event
+# delegation and pub/sub methods.
+module.exports = class Delegator
+  # Public: Events object. This contains a key/pair hash of events/methods that
+  # should be bound. See Delegator#addEvents() for usage.
+  events: {}
+
+# Public: Options object. Extended on initialisation.
+  options: {}
+
+# A jQuery object wrapping the DOM Element provided on initialisation.
+  element: null
+
+# Public: Constructor function that sets up the instance. Binds the @events
+# hash and extends the @options object.
+#
+# element - The DOM element that this instance represents.
+# options - An Object literal of options.
+#
+# Examples
+#
+#   element  = document.getElementById('my-element')
+#   instance = new Delegator(element, {
+#     option: 'my-option'
+#   })
+#
+# Returns a new instance of Delegator.
+  constructor: (element, options) ->
+    @options = $.extend(true, {}, @options, options)
+    @element = $(element)
+
+    # Delegator creates closures for each event it binds. This is a private
+    # registry of created closures, used to enable event unbinding.
+    @_closures = {}
+
+    this.on = this.subscribe
+    this.addEvents()
+
+# Public: Destroy the instance, unbinding all events.
+#
+# Returns nothing.
+  destroy: ->
+    this.removeEvents()
+
+# Public: binds the function names in the @events Object to their events.
+#
+# The @events Object should be a set of key/value pairs where the key is the
+# event name with optional CSS selector. The value should be a String method
+# name on the current class.
+#
+# This is called by the default Delegator constructor and so shouldn't usually
+# need to be called by the user.
+#
+# Examples
+#
+#   # This will bind the clickedElement() method to the click event on @element.
+#   @options = {"click": "clickedElement"}
+#
+#   # This will delegate the submitForm() method to the submit event on the
+#   # form within the @element.
+#   @options = {"form submit": "submitForm"}
+#
+#   # This will bind the updateAnnotationStore() method to the custom
+#   # annotation:save event. NOTE: Because this is a custom event the
+#   # Delegator#subscribe() method will be used and updateAnnotationStore()
+#   # will not receive an event parameter like the previous two examples.
+#   @options = {"annotation:save": "updateAnnotationStore"}
+#
+# Returns nothing.
+  addEvents: ->
+    for event in Delegator._parseEvents(@events)
+      this._addEvent event.selector, event.event, event.functionName
+
+# Public: unbinds functions previously bound to events by addEvents().
+#
+# The @events Object should be a set of key/value pairs where the key is the
+# event name with optional CSS selector. The value should be a String method
+# name on the current class.
+#
+# Returns nothing.
+  removeEvents: ->
+    for event in Delegator._parseEvents(@events)
+      this._removeEvent event.selector, event.event, event.functionName
+
+# Binds an event to a callback function represented by a String. A selector
+# can be provided in order to watch for events on a child element.
+#
+# The event can be any standard event supported by jQuery or a custom String.
+# If a custom string is used the callback function will not recieve an
+# event object as it's first parameter.
+#
+# selector     - Selector String matching child elements. (default: '')
+# event        - The event to listen for.
+# functionName - A String function name to bind to the event.
+#
+# Examples
+#
+#   # Listens for all click events on instance.element.
+#   instance._addEvent('', 'click', 'onClick')
+#
+#   # Delegates the instance.onInputFocus() method to focus events on all
+#   # form inputs within instance.element.
+#   instance._addEvent('form :input', 'focus', 'onInputFocus')
+#
+# Returns itself.
+  _addEvent: (selector, event, functionName) ->
+    closure = => this[functionName].apply(this, arguments)
+
+    if selector == '' and Delegator._isCustomEvent(event)
+      this.subscribe(event, closure)
+    else
+      @element.delegate(selector, event, closure)
+
+    @_closures["#{selector}/#{event}/#{functionName}"] = closure
+
+    this
+
+# Unbinds a function previously bound to an event by the _addEvent method.
+#
+# Takes the same arguments as _addEvent(), and an event will only be
+# successfully unbound if the arguments to removeEvent() are exactly the same
+# as the original arguments to _addEvent(). This would usually be called by
+# _removeEvents().
+#
+# selector     - Selector String matching child elements. (default: '')
+# event        - The event to listen for.
+# functionName - A String function name to bind to the event.
+#
+# Returns itself.
+  _removeEvent: (selector, event, functionName) ->
+    closure = @_closures["#{selector}/#{event}/#{functionName}"]
+
+    if selector == '' and Delegator._isCustomEvent(event)
+      this.unsubscribe(event, closure)
+    else
+      @element.undelegate(selector, event, closure)
+
+    delete @_closures["#{selector}/#{event}/#{functionName}"]
+
+    this
+
+
+# Public: Fires an event and calls all subscribed callbacks with any parameters
+# provided. This is essentially an alias of @element.triggerHandler() but
+# should be used to fire custom events.
+#
+# NOTE: Events fired using .publish() will not bubble up the DOM.
+#
+# event  - A String event name.
+# params - An Array of parameters to provide to callbacks.
+#
+# Examples
+#
+#   instance.subscribe('annotation:save', (msg) -> console.log(msg))
+#   instance.publish('annotation:save', ['Hello World'])
+#   # => Outputs "Hello World"
+#
+# Returns itself.
+  publish: () ->
+    @element.triggerHandler.apply @element, arguments
+    this
+
+# Public: Listens for custom event which when published will call the provided
+# callback. This is essentially a wrapper around @element.bind() but removes
+# the event parameter that jQuery event callbacks always recieve. These
+# parameters are unnessecary for custom events.
+#
+# event    - A String event name.
+# callback - A callback function called when the event is published.
+#
+# Examples
+#
+#   instance.subscribe('annotation:save', (msg) -> console.log(msg))
+#   instance.publish('annotation:save', ['Hello World'])
+#   # => Outputs "Hello World"
+#
+# Returns itself.
+  subscribe: (event, callback) ->
+    closure = -> callback.apply(this, [].slice.call(arguments, 1))
+
+    # Ensure both functions have the same unique id so that jQuery will accept
+    # callback when unbinding closure.
+    closure.guid = callback.guid = ($.guid += 1)
+
+    @element.bind event, closure
+    this
+
+# Public: Unsubscribes a callback from an event. The callback will no longer
+# be called when the event is published.
+#
+# event    - A String event name.
+# callback - A callback function to be removed.
+#
+# Examples
+#
+#   callback = (msg) -> console.log(msg)
+#   instance.subscribe('annotation:save', callback)
+#   instance.publish('annotation:save', ['Hello World'])
+#   # => Outputs "Hello World"
+#
+#   instance.unsubscribe('annotation:save', callback)
+#   instance.publish('annotation:save', ['Hello Again'])
+#   # => No output.
+#
+# Returns itself.
+  unsubscribe: ->
+    @element.unbind.apply @element, arguments
+    this
+
+
+# Parse the @events object of a Delegator into an array of objects containing
+# string-valued "selector", "event", and "func" keys.
+Delegator._parseEvents = (eventsObj) ->
+  events = []
+  for sel, functionName of eventsObj
+    [selector..., event] = sel.split ' '
+    events.push({
+      selector: selector.join(' '),
+      event: event,
+      functionName: functionName
+    })
+  return events
+
+
+# Native jQuery events that should recieve an event object. Plugins can
+# add their own methods to this if required.
+Delegator.natives = do ->
+  specials = (key for own key, val of $.event.special)
+  """
+  blur focus focusin focusout load resize scroll unload click dblclick
+  mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave
+  change select submit keydown keypress keyup error
+  """.split(/[^a-z]+/).concat(specials)
+
+
+# Checks to see if the provided event is a DOM event supported by jQuery or
+# a custom user event.
+#
+# event - String event name.
+#
+# Examples
+#
+#   Delegator._isCustomEvent('click')              # => false
+#   Delegator._isCustomEvent('mousedown')          # => false
+#   Delegator._isCustomEvent('annotation:created') # => true
+#
+# Returns true if event is a custom user event.
+Delegator._isCustomEvent = (event) ->
+  [event] = event.split('.')
+  $.inArray(event, Delegator.natives) == -1

src/annotator/guest.coffee

@@ -3,8 +3,8 @@ extend = require('extend')
 raf = require('raf')
 scrollIntoView = require('scroll-into-view')
 
-Annotator = require('annotator')
-$ = Annotator.$
+Delegator = require('./delegator')
+$ = require('jquery')
 
 adder = require('./adder')
 highlighter = require('./highlighter')
@@ -31,7 +31,7 @@ normalizeURI = (uri, baseURI) ->
   # See https://github.com/hypothesis/h/issues/3471#issuecomment-226713750
   return url.toString().replace(/#.*/, '');
 
-module.exports = class Guest extends Annotator
+module.exports = class Guest extends Delegator
   SHOW_HIGHLIGHTS_CLASS = 'annotator-highlights-always-on'
 
   # Events to be bound on Annotator#element.
@@ -51,21 +51,39 @@ module.exports = class Guest extends Annotator
   anchors: null
   visibleHighlights: false
 
-  html: extend {}, Annotator::html,
-    adder: '<hypothesis-adder></hypothesis-adder>';
+  html:
+    adder: '<hypothesis-adder></hypothesis-adder>'
+    wrapper: '<div class="annotator-wrapper"></div>'
+
+  plugins: {}
+
+  addPlugin: (name, options) ->
+    if @plugins[name]
+      console.error("You cannot have more than one instance of any plugin.")
+    else
+      klass = @options.pluginClasses[name]
+      if typeof klass is 'function'
+        @plugins[name] = new klass(@element[0], options)
+        @plugins[name].annotator = this
+        @plugins[name].pluginInit?()
+      else
+        console.error("Could not load " + name + " plugin. Have you included the appropriate <script> tag?")
+    this # allow chaining
 
   constructor: (element, options) ->
     super
 
+    this.adder = $(this.html.adder).appendTo(@element).hide()
+    
     self = this
     this.adderCtrl = new adder.Adder(@adder[0], {
       onAnnotate: ->
         self.createAnnotation()
-        Annotator.Util.getGlobal().getSelection().removeAllRanges()
+        document.getSelection().removeAllRanges()
       onHighlight: ->
         self.setVisibleHighlights(true)
         self.createHighlight()
-        Annotator.Util.getGlobal().getSelection().removeAllRanges()
+        document.getSelection().removeAllRanges()
     })
     this.selections = selections(document).subscribe
       next: (range) ->
@@ -91,7 +109,7 @@ module.exports = class Guest extends Annotator
 
     # Load plugins
     for own name, opts of @options
-      if not @plugins[name] and Annotator.Plugin[name]
+      if not @plugins[name] and @options.pluginClasses[name]
         this.addPlugin(name, opts)
 
   # Get the document info
@@ -142,16 +160,6 @@ module.exports = class Guest extends Annotator
     crossframe.on 'setVisibleHighlights', (state) =>
       this.setVisibleHighlights(state)
 
-  _setupWrapper: ->
-    @wrapper = @element
-    this
-
-  # These methods aren't used in the iframe-hosted configuration of Annotator.
-  _setupViewer: -> this
-  _setupEditor: -> this
-  _setupDocumentEvents: -> this
-  _setupDynamicStyle: -> this
-
   destroy: ->
     $('#annotator-dynamic-style').remove()
 
@@ -365,7 +373,7 @@ module.exports = class Guest extends Annotator
     @crossframe?.call('focusAnnotations', tags)
 
   _onSelection: (range) ->
-    selection = Annotator.Util.getGlobal().getSelection()
+    selection = document.getSelection()
     isBackwards = rangeUtil.isSelectionBackwards(selection)
     focusRect = rangeUtil.selectionFocusRect(selection)
     if !focusRect
@@ -375,7 +383,7 @@ module.exports = class Guest extends Annotator
 
     @selectedRanges = [range]
 
-    Annotator.$('.annotator-toolbar .h-icon-note')
+    $('.annotator-toolbar .h-icon-note')
       .attr('title', 'New Annotation')
       .removeClass('h-icon-note')
       .addClass('h-icon-annotate');
@@ -387,7 +395,7 @@ module.exports = class Guest extends Annotator
     this.adderCtrl.hide()
     @selectedRanges = []
 
-    Annotator.$('.annotator-toolbar .h-icon-annotate')
+    $('.annotator-toolbar .h-icon-annotate')
       .attr('title', 'New Page Note')
       .removeClass('h-icon-annotate')
       .addClass('h-icon-note');

src/annotator/host.coffee

-Annotator = require('annotator')
-$ = Annotator.$
+$ = require('jquery')
 
 Guest = require('./guest')
 

src/annotator/main.js

@@ -2,7 +2,6 @@
 
 require('../shared/polyfills');
 
-var Annotator = require('annotator');
 
 // Polyfills
 
@@ -13,44 +12,44 @@ var Annotator = require('annotator');
 if (!window.document.evaluate) {
   require('./vendor/wgxpath.install');
 }
-var g = Annotator.Util.getGlobal();
-if (g.wgxpath) {
-  g.wgxpath.install();
+if (window.wgxpath) {
+  window.wgxpath.install();
 }
 
+var $ = require('jquery');
+
 // Applications
-Annotator.Guest = require('./guest');
-Annotator.Host = require('./host');
-Annotator.Sidebar = require('./sidebar');
-Annotator.PdfSidebar = require('./pdf-sidebar');
+var Sidebar = require('./sidebar');
+var PdfSidebar = require('./pdf-sidebar');
 
-// UI plugins
-Annotator.Plugin.BucketBar = require('./plugin/bucket-bar');
-Annotator.Plugin.Toolbar = require('./plugin/toolbar');
+var pluginClasses = {
+  // UI plugins
+  BucketBar: require('./plugin/bucket-bar'),
+  Toolbar: require('./plugin/toolbar'),
 
-// Document type plugins
-Annotator.Plugin.PDF = require('./plugin/pdf');
-require('./vendor/annotator.document');  // Does not export the plugin :(
+  // Document type plugins
+  PDF: require('./plugin/pdf'),
+  Document: require('./plugin/document'),
 
-// Cross-frame communication
-Annotator.Plugin.CrossFrame = require('./plugin/cross-frame');
-Annotator.Plugin.CrossFrame.AnnotationSync = require('./annotation-sync');
-Annotator.Plugin.CrossFrame.Bridge = require('../shared/bridge');
-Annotator.Plugin.CrossFrame.Discovery = require('../shared/discovery');
+  // Cross-frame communication
+  CrossFrame: require('./plugin/cross-frame')
+};
 
 var appLinkEl =
   document.querySelector('link[type="application/annotator+html"]');
 var options = require('./config')(window);
 
-Annotator.noConflict().$.noConflict(true)(function() {
+$.noConflict(true)(function() {
   var Klass = window.PDFViewerApplication ?
-      Annotator.PdfSidebar :
-      Annotator.Sidebar;
+      PdfSidebar :
+      Sidebar;
   if (options.hasOwnProperty('constructor')) {
     Klass = options.constructor;
     delete options.constructor;
   }
 
+  options.pluginClasses = pluginClasses;
+
   window.annotator = new Klass(document.body, options);
   appLinkEl.addEventListener('destroy', function () {
     appLinkEl.parentElement.removeChild(appLinkEl);

src/annotator/plugin.coffee

+Delegator = require('./delegator')
+
+module.exports = class Plugin extends Delegator
+  constructor: (element, options) ->
+    super
+
+  pluginInit: () ->
+

src/annotator/plugin/bucket-bar.coffee

 raf = require('raf')
 
-Annotator = require('annotator')
-$ = Annotator.$
+$ = require('jquery')
+Plugin = require('../plugin')
 
 scrollIntoView = require('scroll-into-view')
 
@@ -42,7 +42,7 @@ scrollToClosest = (anchors, direction) ->
   scrollIntoView(next.highlights[0])
 
 
-module.exports = class BucketBar extends Annotator.Plugin
+module.exports = class BucketBar extends Plugin
   # svg skeleton
   html: """
         <div class="annotator-bucket-bar">

src/annotator/plugin/cross-frame.coffee

-Annotator = require('annotator')
+Plugin = require('../plugin')
+
+AnnotationSync = require('../annotation-sync')
+Bridge = require('../../shared/bridge')
+Discovery = require('../../shared/discovery')
+
 
 # Extracts individual keys from an object and returns a new one.
 extract = extract = (obj, keys...) ->
@@ -11,17 +16,17 @@ extract = extract = (obj, keys...) ->
 # frame acts as the bridge client, the sidebar is the server. This plugin
 # can also be used to send messages through to the sidebar using the
 # call method.
-module.exports = class CrossFrame extends Annotator.Plugin
+module.exports = class CrossFrame extends Plugin
   constructor: (elem, options) ->
     super
 
     opts = extract(options, 'server')
-    discovery = new CrossFrame.Discovery(window, opts)
+    discovery = new Discovery(window, opts)
 
-    bridge = new CrossFrame.Bridge()
+    bridge = new Bridge()
 
     opts = extract(options, 'on', 'emit')
-    annotationSync = new CrossFrame.AnnotationSync(bridge, opts)
+    annotationSync = new AnnotationSync(bridge, opts)
 
     this.pluginInit = ->
       onDiscoveryCallback = (source, origin, token) ->
@@ -30,7 +35,7 @@ module.exports = class CrossFrame extends Annotator.Plugin
 
     this.destroy = ->
       # super doesnt work here :(
-      Annotator.Plugin::destroy.apply(this, arguments)
+      Plugin::destroy.apply(this, arguments)
       bridge.destroy()
       discovery.stopDiscovery()
 

src/annotator/plugin/document.coffee

+$ = require('jquery')
+Plugin = require('../plugin')
+
+###
+** Adapted from:
+** https://github.com/openannotation/annotator/blob/v1.2.x/src/plugin/document.coffee
+**
+** Annotator v1.2.10
+** https://github.com/openannotation/annotator
+**
+** Copyright 2015, the Annotator project contributors.
+** Dual licensed under the MIT and GPLv3 licenses.
+** https://github.com/openannotation/annotator/blob/master/LICENSE
+###
+
+module.exports = class Document extends Plugin
+
+  events:
+    'beforeAnnotationCreated': 'beforeAnnotationCreated'
+
+  pluginInit: ->
+    this.getDocumentMetadata()
+
+# returns the primary URI for the document being annotated
+
+  uri: =>
+    uri = decodeURIComponent document.location.href
+    for link in @metadata.link
+      if link.rel == "canonical"
+        uri = link.href
+    return uri
+
+# returns all uris for the document being annotated
+
+  uris: =>
+    uniqueUrls = {}
+    for link in @metadata.link
+      uniqueUrls[link.href] = true if link.href
+    return (href for href of uniqueUrls)
+
+  beforeAnnotationCreated: (annotation) =>
+    annotation.document = @metadata
+
+  getDocumentMetadata: =>
+    @metadata = {}
+
+    # first look for some common metadata types
+    # TODO: look for microdata/rdfa?
+    this._getHighwire()
+    this._getDublinCore()
+    this._getFacebook()
+    this._getEprints()
+    this._getPrism()
+    this._getTwitter()
+    this._getFavicon()
+
+    # extract out/normalize some things
+    this._getTitle()
+    this._getLinks()
+
+    return @metadata
+
+  _getHighwire: =>
+    return @metadata.highwire = this._getMetaTags("citation", "name", "_")
+
+  _getFacebook: =>
+    return @metadata.facebook = this._getMetaTags("og", "property", ":")
+
+  _getTwitter: =>
+    return @metadata.twitter = this._getMetaTags("twitter", "name", ":")
+
+  _getDublinCore: =>
+    return @metadata.dc = this._getMetaTags("dc", "name", ".")
+
+  _getPrism: =>
+    return @metadata.prism = this._getMetaTags("prism", "name", ".")
+
+  _getEprints: =>
+    return @metadata.eprints = this._getMetaTags("eprints", "name", ".")
+
+  _getMetaTags: (prefix, attribute, delimiter) =>
+    tags = {}
+    for meta in $("meta")
+      name = $(meta).attr(attribute)
+      content = $(meta).prop("content")
+      if name
+        match = name.match(RegExp("^#{prefix}#{delimiter}(.+)$", "i"))
+        if match
+          n = match[1]
+          if tags[n]
+            tags[n].push(content)
+          else
+            tags[n] = [content]
+    return tags
+
+  _getTitle: =>
+    if @metadata.highwire.title
+      @metadata.title = @metadata.highwire.title[0]
+    else if @metadata.eprints.title
+      @metadata.title = @metadata.eprints.title[0]
+    else if @metadata.prism.title
+      @metadata.title = @metadata.prism.title[0]
+    else if @metadata.facebook.title
+      @metadata.title = @metadata.facebook.title[0]
+    else if @metadata.twitter.title
+      @metadata.title = @metadata.twitter.title[0]
+    else if @metadata.dc.title
+      @metadata.title = @metadata.dc.title[0]
+    else
+      @metadata.title = $("head title").text()
+
+  _getLinks: =>
+# we know our current location is a link for the document
+    @metadata.link = [href: document.location.href]
+
+    # look for some relevant link relations
+    for link in $("link")
+      l = $(link)
+      href = this._absoluteUrl(l.prop('href')) # get absolute url
+      rel = l.prop('rel')
+      type = l.prop('type')
+      lang = l.prop('hreflang')
+
+      if rel not in ["alternate", "canonical", "bookmark", "shortlink"] then continue
+
+      if rel is 'alternate'
+# Ignore feeds resources
+        if type and type.match /^application\/(rss|atom)\+xml/ then continue
+        # Ignore alternate languages
+        if lang then continue
+
+      @metadata.link.push(href: href, rel: rel, type: type)
+
+    # look for links in scholar metadata
+    for name, values of @metadata.highwire
+
+      if name == "pdf_url"
+        for url in values
+          @metadata.link.push
+            href: this._absoluteUrl(url)
+            type: "application/pdf"
+
+      # kind of a hack to express DOI identifiers as links but it's a
+      # convenient place to look them up later, and somewhat sane since
+      # they don't have a type
+
+      if name == "doi"
+        for doi in values
+          if doi[0..3] != "doi:"
+            doi = "doi:" + doi
+          @metadata.link.push(href: doi)
+
+    # look for links in dublincore data
+    for name, values of @metadata.dc
+      if name == "identifier"
+        for id in values
+          if id[0..3] == "doi:"
+            @metadata.link.push(href: id)
+
+  _getFavicon: =>
+    for link in $("link")
+      if $(link).prop("rel") in ["shortcut icon", "icon"]
+        @metadata["favicon"] = this._absoluteUrl(link.href)
+
+# hack to get a absolute url from a possibly relative one
+
+  _absoluteUrl: (url) ->
+    d = document.createElement('a')
+    d.href = url
+    d.href

src/annotator/plugin/pdf.coffee

-extend = require('extend')
-Annotator = require('annotator')
+Plugin = require('../plugin')
 
 RenderingStates = require('../pdfjs-rendering-states')
 
-module.exports = class PDF extends Annotator.Plugin
+module.exports = class PDF extends Plugin
   documentLoaded: null
   observer: null
   pdfViewer: null

src/annotator/plugin/toolbar.coffee

-Annotator = require('annotator')
-$ = Annotator.$
+Plugin = require('../plugin')
+$ = require('jquery')
 
 makeButton = (item) ->
   anchor = $('<button></button>')
@@ -12,7 +12,7 @@ makeButton = (item) ->
   button = $('<li></li>').append(anchor)
   return button[0]
 
-module.exports = class Toolbar extends Annotator.Plugin
+module.exports = class Toolbar extends Plugin
   HIDE_CLASS = 'annotator-hide'
 
   events:

src/annotator/vendor/annotator.document.js

-
-/*
-** Annotator v1.2.10-dev-6536160
-** https://github.com/okfn/annotator/
-**
-** Copyright 2015, the Annotator project contributors.
-** Dual licensed under the MIT and GPLv3 licenses.
-** https://github.com/okfn/annotator/blob/master/LICENSE
-**
-** Built at: 2015-05-11 18:53:38Z
- */
-
-
-//
-
-// Generated by CoffeeScript 1.6.3
-(function() {
-  var _ref,
-    __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
-    __hasProp = {}.hasOwnProperty,
-    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
-
-  Annotator.Plugin.Document = (function(_super) {
-    var $;
-
-    __extends(Document, _super);
-
-    function Document() {
-      this._getFavicon = __bind(this._getFavicon, this);
-      this._getLinks = __bind(this._getLinks, this);
-      this._getTitle = __bind(this._getTitle, this);
-      this._getMetaTags = __bind(this._getMetaTags, this);
-      this._getEprints = __bind(this._getEprints, this);
-      this._getPrism = __bind(this._getPrism, this);
-      this._getDublinCore = __bind(this._getDublinCore, this);
-      this._getTwitter = __bind(this._getTwitter, this);
-      this._getFacebook = __bind(this._getFacebook, this);
-      this._getHighwire = __bind(this._getHighwire, this);
-      this.getDocumentMetadata = __bind(this.getDocumentMetadata, this);
-      this.beforeAnnotationCreated = __bind(this.beforeAnnotationCreated, this);
-      this.uris = __bind(this.uris, this);
-      this.uri = __bind(this.uri, this);
-      _ref = Document.__super__.constructor.apply(this, arguments);
-      return _ref;
-    }
-
-    $ = Annotator.$;
-
-    Document.prototype.events = {
-      'beforeAnnotationCreated': 'beforeAnnotationCreated'
-    };
-
-    Document.prototype.pluginInit = function() {
-      return this.getDocumentMetadata();
-    };
-
-    Document.prototype.uri = function() {
-      var link, uri, _i, _len, _ref1;
-      uri = decodeURIComponent(document.location.href);
-      _ref1 = this.metadata.link;
-      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
-        link = _ref1[_i];
-        if (link.rel === "canonical") {
-          uri = link.href;
-        }
-      }
-      return uri;
-    };
-
-    Document.prototype.uris = function() {
-      var href, link, uniqueUrls, _i, _len, _ref1;
-      uniqueUrls = {};
-      _ref1 = this.metadata.link;
-      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
-        link = _ref1[_i];
-        if (link.href) {
-          uniqueUrls[link.href] = true;
-        }
-      }
-      return (function() {
-        var _results;
-        _results = [];
-        for (href in uniqueUrls) {
-          _results.push(href);
-        }
-        return _results;
-      })();
-    };
-
-    Document.prototype.beforeAnnotationCreated = function(annotation) {
-      return annotation.document = this.metadata;
-    };
-
-    Document.prototype.getDocumentMetadata = function() {
-      this.metadata = {};
-      this._getHighwire();
-      this._getDublinCore();
-      this._getFacebook();
-      this._getEprints();
-      this._getPrism();
-      this._getTwitter();
-      this._getFavicon();
-      this._getTitle();
-      this._getLinks();
-      return this.metadata;
-    };
-
-    Document.prototype._getHighwire = function() {
-      return this.metadata.highwire = this._getMetaTags("citation", "name", "_");
-    };
-
-    Document.prototype._getFacebook = function() {
-      return this.metadata.facebook = this._getMetaTags("og", "property", ":");
-    };
-
-    Document.prototype._getTwitter = function() {
-      return this.metadata.twitter = this._getMetaTags("twitter", "name", ":");
-    };
-
-    Document.prototype._getDublinCore = function() {
-      return this.metadata.dc = this._getMetaTags("dc", "name", ".");
-    };
-
-    Document.prototype._getPrism = function() {
-      return this.metadata.prism = this._getMetaTags("prism", "name", ".");
-    };
-
-    Document.prototype._getEprints = function() {
-      return this.metadata.eprints = this._getMetaTags("eprints", "name", ".");
-    };
-
-    Document.prototype._getMetaTags = function(prefix, attribute, delimiter) {
-      var content, match, meta, n, name, tags, _i, _len, _ref1;
-      tags = {};
-      _ref1 = $("meta");
-      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
-        meta = _ref1[_i];
-        name = $(meta).attr(attribute);
-        content = $(meta).prop("content");
-        if (name) {
-          match = name.match(RegExp("^" + prefix + delimiter + "(.+)$", "i"));
-          if (match) {
-            n = match[1];
-            if (tags[n]) {
-              tags[n].push(content);
-            } else {
-              tags[n] = [content];
-            }
-          }
-        }
-      }
-      return tags;
-    };
-
-    Document.prototype._getTitle = function() {
-      if (this.metadata.highwire.title) {
-        return this.metadata.title = this.metadata.highwire.title[0];
-      } else if (this.metadata.eprints.title) {
-        return this.metadata.title = this.metadata.eprints.title[0];
-      } else if (this.metadata.prism.title) {
-        return this.metadata.title = this.metadata.prism.title[0];
-      } else if (this.metadata.facebook.title) {
-        return this.metadata.title = this.metadata.facebook.title[0];
-      } else if (this.metadata.twitter.title) {
-        return this.metadata.title = this.metadata.twitter.title[0];
-      } else if (this.metadata.dc.title) {
-        return this.metadata.title = this.metadata.dc.title[0];
-      } else {
-        return this.metadata.title = $("head title").text();
-      }
-    };
-
-    Document.prototype._getLinks = function() {
-      var doi, href, id, l, lang, link, name, rel, type, url, values, _i, _j, _k, _len, _len1, _len2, _ref1, _ref2, _ref3, _results;
-      this.metadata.link = [
-        {
-          href: document.location.href
-        }
-      ];
-      _ref1 = $("link");
-      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
-        link = _ref1[_i];
-        l = $(link);
-        href = this._absoluteUrl(l.prop('href'));
-        rel = l.prop('rel');
-        type = l.prop('type');
-        lang = l.prop('hreflang');
-        if (rel !== "alternate" && rel !== "canonical" && rel !== "bookmark" && rel !== "shortlink") {
-          continue;
-        }
-        if (rel === 'alternate') {
-          if (type && type.match(/^application\/(rss|atom)\+xml/)) {
-            continue;
-          }
-          if (lang) {
-            continue;
-          }
-        }
-        this.metadata.link.push({
-          href: href,
-          rel: rel,
-          type: type
-        });
-      }
-      _ref2 = this.metadata.highwire;
-      for (name in _ref2) {
-        values = _ref2[name];
-        if (name === "pdf_url") {
-          for (_j = 0, _len1 = values.length; _j < _len1; _j++) {
-            url = values[_j];
-            this.metadata.link.push({
-              href: this._absoluteUrl(url),
-              type: "application/pdf"
-            });
-          }
-        }
-        if (name === "doi") {
-          for (_k = 0, _len2 = values.length; _k < _len2; _k++) {
-            doi = values[_k];
-            if (doi.slice(0, 4) !== "doi:") {
-              doi = "doi:" + doi;
-            }
-            this.metadata.link.push({
-              href: doi
-            });
-          }
-        }
-      }
-      _ref3 = this.metadata.dc;
-      _results = [];
-      for (name in _ref3) {
-        values = _ref3[name];
-        if (name === "identifier") {
-          _results.push((function() {
-            var _l, _len3, _results1;
-            _results1 = [];
-            for (_l = 0, _len3 = values.length; _l < _len3; _l++) {
-              id = values[_l];
-              if (id.slice(0, 4) === "doi:") {
-                _results1.push(this.metadata.link.push({
-                  href: id
-                }));
-              } else {
-                _results1.push(void 0);
-              }
-            }
-            return _results1;
-          }).call(this));
-        } else {
-          _results.push(void 0);
-        }
-      }
-      return _results;
-    };
-
-    Document.prototype._getFavicon = function() {
-      var link, _i, _len, _ref1, _ref2, _results;
-      _ref1 = $("link");
-      _results = [];
-      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
-        link = _ref1[_i];
-        if ((_ref2 = $(link).prop("rel")) === "shortcut icon" || _ref2 === "icon") {
-          _results.push(this.metadata["favicon"] = this._absoluteUrl(link.href));
-        } else {
-          _results.push(void 0);
-        }
-      }
-      return _results;
-    };
-
-    Document.prototype._absoluteUrl = function(url) {
-      var d;
-      d = document.createElement('a');
-      d.href = url;
-      return d.href;
-    };
-
-    return Document;
-
-  })(Annotator.Plugin);
-
-}).call(this);
-
-//
-//# sourceMappingURL=annotator.document.map
\ No newline at end of file