angular.module('ngTurbolinks', []).run(($location, $rootScope, $http, $q)->
loadedAssets = null
createDocument = null
xhr_req = null
referer = null
triggerEvent = (name, data) ->
event = document.createEvent 'Events'
event.data = data if data
event.initEvent name, true, true
document.dispatchEvent event
popCookie = (name) ->
value = document.cookie.match(new RegExp(name+"=(\\w+)"))?[1].toUpperCase() or ''
document.cookie = name + '=; expires=Thu, 01-Jan-70 00:00:01 GMT; path=/'
value
rememberReferer = ->
referer = document.location.href
processResponse = (responseText, status, headers)->
clientOrServerError = ->
400 <= status < 600
validContent = ->
headers()["content-type"].match /^(?:text\/html|application\/xhtml\+xml|application\/xml)(?:;|$)/
extractTrackAssets = (doc) ->
for node in doc.head.childNodes when node.getAttribute?('data-turbolinks-track')?
node.getAttribute('src') or node.getAttribute('href')
assetsChanged = (doc) ->
loadedAssets ||= extractTrackAssets document
fetchedAssets = extractTrackAssets doc
fetchedAssets.length isnt loadedAssets.length or intersection(fetchedAssets, loadedAssets).length isnt loadedAssets.length
intersection = (a, b) ->
[a, b] = [b, a] if a.length > b.length
value for value in a when value in b
if not clientOrServerError() and validContent()
doc = createDocument responseText
if doc and !assetsChanged doc
return doc
browserCompatibleDocumentParser = ->
createDocumentUsingParser = (html) ->
(new DOMParser).parseFromString html, 'text/html'
createDocumentUsingDOM = (html) ->
doc = document.implementation.createHTMLDocument ''
doc.documentElement.innerHTML = html
doc
createDocumentUsingWrite = (html) ->
doc = document.implementation.createHTMLDocument ''
doc.open 'replace'
doc.write html
doc.close()
doc
# Use createDocumentUsingParser if DOMParser is defined and natively
# supports 'text/html' parsing (Firefox 12+, IE 10)
#
# Use createDocumentUsingDOM if createDocumentUsingParser throws an exception
# due to unsupported type 'text/html' (Firefox < 12, Opera)
#
# Use createDocumentUsingWrite if:
# - DOMParser isn't defined
# - createDocumentUsingParser returns null due to unsupported type 'text/html' (Chrome, Safari)
# - createDocumentUsingDOM doesn't create a valid HTML document (safeguarding against potential edge cases)
try
if window.DOMParser
testDoc = createDocumentUsingParser 'test'
createDocumentUsingParser
catch e
testDoc = createDocumentUsingDOM '
test'
createDocumentUsingDOM
finally
unless testDoc?.body?.childNodes.length is 1
return createDocumentUsingWrite
extractTitleAndBody = (doc) ->
title = doc.querySelector 'title'
[ title?.textContent, removeNoscriptTags(doc.body), CSRFToken.get(doc).token, 'runScripts' ]
CSRFToken =
get: (doc = document) ->
node: tag = doc.querySelector 'meta[name="csrf-token"]'
token: tag?.getAttribute? 'content'
update: (latest) ->
current = @get()
if current.token? and latest? and current.token isnt latest
current.node.setAttribute 'content', latest
changePage = (title, body, csrfToken, runScripts) ->
document.title = title
document.documentElement.replaceChild body, document.body
CSRFToken.update csrfToken if csrfToken?
executeScriptTags() if runScripts
currentState = window.history.state
triggerEvent 'page:change'
triggerEvent 'page:update'
executeScriptTags = ->
scripts = Array::slice.call document.body.querySelectorAll 'script:not([data-turbolinks-eval="false"])'
for script in scripts when script.type in ['', 'text/javascript']
copy = document.createElement 'script'
copy.setAttribute attr.name, attr.value for attr in script.attributes
copy.appendChild document.createTextNode script.innerHTML
{ parentNode, nextSibling } = script
parentNode.removeChild script
parentNode.insertBefore copy, nextSibling
return
removeNoscriptTags = (node) ->
node.innerHTML = node.innerHTML.replace //ig, ''
node
fetch = (url)->
rememberReferer()
xhr_req.resolve() if xhr_req
xhr_req = $q.defer()
$http.get(url, {
headers: {
'Accept' : 'text/html, application/xhtml+xml, application/xml'
'X-XHR-Referer' : referer
},
timeout: xhr_req.promise
}).success((data, status, headers)->
if doc = processResponse(data, status, headers)
changePage extractTitleAndBody(doc)...
#reflectRedirectedUrl()
triggerEvent 'page:load'
else
document.location.href = url
).error(->
document.location.href = url
)
# Handle bug in Firefox 26/27 where history.state is initially undefined
historyStateIsDefined =
window.history.state != undefined or navigator.userAgent.match /Firefox\/2[6|7]/
browserSupportsPushState =
window.history and window.history.pushState and window.history.replaceState and historyStateIsDefined
browserIsntBuggy =
!navigator.userAgent.match /CriOS\//
requestMethodIsSafe =
popCookie('request_method') in ['GET','']
browserSupportsTurbolinks = browserSupportsPushState and browserIsntBuggy and requestMethodIsSafe
browserSupportsCustomEvents =
document.addEventListener and document.createEvent
installDocumentReadyPageEventTriggers = ->
document.addEventListener 'DOMContentLoaded', ( ->
triggerEvent 'page:change'
triggerEvent 'page:update'
), true
installJqueryAjaxSuccessPageUpdateTrigger = ->
if typeof jQuery isnt 'undefined'
jQuery(document).on 'ajaxSuccess', (event, xhr, settings) ->
return unless jQuery.trim xhr.responseText
triggerEvent 'page:update'
if browserSupportsCustomEvents
installDocumentReadyPageEventTriggers()
installJqueryAjaxSuccessPageUpdateTrigger()
if browserSupportsTurbolinks
visit = fetch
createDocument = browserCompatibleDocumentParser()
else
visit = (url) ->
document.location.href = url
$rootScope.$on("$locationChangeStart", (event, url, prev_url)->
if url == prev_url
event.preventDefault()
return false
visit(url)
)
)