1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
require './location'
require './browser_adapter'
require './history'
require './view'
require './scroll_manager'
require './snapshot_cache'
require './visit'
class Turbolinks.Controller
constructor: ->
@history = new Turbolinks.History this
@view = new Turbolinks.View this
@scrollManager = new Turbolinks.ScrollManager this
@restorationData = {}
@clearCache()
@setProgressBarDelay(500)
start: ->
if Turbolinks.supported and not @started
addEventListener("click", @clickCaptured, true)
addEventListener("DOMContentLoaded", @pageLoaded, false)
@scrollManager.start()
@startHistory()
@started = true
@enabled = true
disable: ->
@enabled = false
stop: ->
if @started
removeEventListener("click", @clickCaptured, true)
removeEventListener("DOMContentLoaded", @pageLoaded, false)
@scrollManager.stop()
@stopHistory()
@started = false
clearCache: ->
@cache = new Turbolinks.SnapshotCache 10
visit: (location, options = {}) ->
location = Turbolinks.Location.wrap(location)
if @applicationAllowsVisitingLocation(location)
if @locationIsVisitable(location)
action = options.action ? "advance"
@adapter.visitProposedToLocationWithAction(location, action)
else
window.location = location
startVisitToLocationWithAction: (location, action, restorationIdentifier) ->
if Turbolinks.supported
restorationData = @getRestorationDataForIdentifier(restorationIdentifier)
@startVisit(location, action, {restorationData})
else
window.location = location
setProgressBarDelay: (delay) ->
@progressBarDelay = delay
# History
startHistory: ->
@location = Turbolinks.Location.wrap(window.location)
@restorationIdentifier = Turbolinks.uuid()
@history.start()
@history.replace(@location, @restorationIdentifier)
stopHistory: ->
@history.stop()
pushHistoryWithLocationAndRestorationIdentifier: (location, @restorationIdentifier) ->
@location = Turbolinks.Location.wrap(location)
@history.push(@location, @restorationIdentifier)
replaceHistoryWithLocationAndRestorationIdentifier: (location, @restorationIdentifier) ->
@location = Turbolinks.Location.wrap(location)
@history.replace(@location, @restorationIdentifier)
# History delegate
historyPoppedToLocationWithRestorationIdentifier: (location, @restorationIdentifier) ->
if @enabled
restorationData = @getRestorationDataForIdentifier(@restorationIdentifier)
@startVisit(location, "restore", {@restorationIdentifier, restorationData, historyChanged: true})
@location = Turbolinks.Location.wrap(location)
else
@adapter.pageInvalidated()
# Snapshot cache
getCachedSnapshotForLocation: (location) ->
@cache.get(location)?.clone()
shouldCacheSnapshot: ->
@view.getSnapshot().isCacheable()
cacheSnapshot: ->
if @shouldCacheSnapshot()
@notifyApplicationBeforeCachingSnapshot()
snapshot = @view.getSnapshot()
location = @lastRenderedLocation
Turbolinks.defer =>
@cache.put(location, snapshot.clone())
# Scrolling
scrollToAnchor: (anchor) ->
if element = @view.getElementForAnchor(anchor)
@scrollToElement(element)
else
@scrollToPosition(x: 0, y: 0)
scrollToElement: (element) ->
@scrollManager.scrollToElement(element)
scrollToPosition: (position) ->
@scrollManager.scrollToPosition(position)
# Scroll manager delegate
scrollPositionChanged: (scrollPosition) ->
restorationData = @getCurrentRestorationData()
restorationData.scrollPosition = scrollPosition
# View
render: (options, callback) ->
@view.render(options, callback)
viewInvalidated: ->
@adapter.pageInvalidated()
viewWillRender: (newBody) ->
@notifyApplicationBeforeRender(newBody)
viewRendered: ->
@lastRenderedLocation = @currentVisit.location
@notifyApplicationAfterRender()
# Event handlers
pageLoaded: =>
@lastRenderedLocation = @location
@notifyApplicationAfterPageLoad()
clickCaptured: =>
removeEventListener("click", @clickBubbled, false)
addEventListener("click", @clickBubbled, false)
clickBubbled: (event) =>
if @enabled and @clickEventIsSignificant(event)
if link = @getVisitableLinkForNode(event.target)
if location = @getVisitableLocationForLink(link)
if @applicationAllowsFollowingLinkToLocation(link, location)
event.preventDefault()
action = @getActionForLink(link)
@visit(location, {action})
# Application events
applicationAllowsFollowingLinkToLocation: (link, location) ->
event = @notifyApplicationAfterClickingLinkToLocation(link, location)
not event.defaultPrevented
applicationAllowsVisitingLocation: (location) ->
event = @notifyApplicationBeforeVisitingLocation(location)
not event.defaultPrevented
notifyApplicationAfterClickingLinkToLocation: (link, location) ->
Turbolinks.dispatch("turbolinks:click", target: link, data: { url: location.absoluteURL }, cancelable: true)
notifyApplicationBeforeVisitingLocation: (location) ->
Turbolinks.dispatch("turbolinks:before-visit", data: { url: location.absoluteURL }, cancelable: true)
notifyApplicationAfterVisitingLocation: (location) ->
Turbolinks.dispatch("turbolinks:visit", data: { url: location.absoluteURL })
notifyApplicationBeforeCachingSnapshot: ->
Turbolinks.dispatch("turbolinks:before-cache")
notifyApplicationBeforeRender: (newBody) ->
Turbolinks.dispatch("turbolinks:before-render", data: {newBody})
notifyApplicationAfterRender: ->
Turbolinks.dispatch("turbolinks:render")
notifyApplicationAfterPageLoad: (timing = {}) ->
Turbolinks.dispatch("turbolinks:load", data: { url: @location.absoluteURL, timing })
# Private
startVisit: (location, action, properties) ->
@currentVisit?.cancel()
@currentVisit = @createVisit(location, action, properties)
@currentVisit.start()
@notifyApplicationAfterVisitingLocation(location)
createVisit: (location, action, {restorationIdentifier, restorationData, historyChanged} = {}) ->
visit = new Turbolinks.Visit this, location, action
visit.restorationIdentifier = restorationIdentifier ? Turbolinks.uuid()
visit.restorationData = Turbolinks.copyObject(restorationData)
visit.historyChanged = historyChanged
visit.referrer = @location
visit
visitCompleted: (visit) ->
@notifyApplicationAfterPageLoad(visit.getTimingMetrics())
clickEventIsSignificant: (event) ->
not (
event.defaultPrevented or
event.target.isContentEditable or
event.which > 1 or
event.altKey or
event.ctrlKey or
event.metaKey or
event.shiftKey
)
getVisitableLinkForNode: (node) ->
if @nodeIsVisitable(node)
Turbolinks.closest(node, "a[href]:not([target]):not([download])")
getVisitableLocationForLink: (link) ->
location = new Turbolinks.Location link.getAttribute("href")
location if @locationIsVisitable(location)
getActionForLink: (link) ->
link.getAttribute("data-turbolinks-action") ? "advance"
nodeIsVisitable: (node) ->
if container = Turbolinks.closest(node, "[data-turbolinks]")
container.getAttribute("data-turbolinks") isnt "false"
else
true
locationIsVisitable: (location) ->
location.isPrefixedBy(@view.getRootLocation()) and location.isHTML()
getCurrentRestorationData: ->
@getRestorationDataForIdentifier(@restorationIdentifier)
getRestorationDataForIdentifier: (identifier) ->
@restorationData[identifier] ?= {}
|
