Sha256: b70181d665c38652a0a345590a176269beb02e1163a3f48a5fb9cf8e7842c607
Contents?: true
Size: 1.21 KB
Versions: 5
Compression:
Stored size: 1.21 KB
Contents
{elementMatchesSelector} = LocalTime
class LocalTime.PageObserver
constructor: (@selector, @callback) ->
start: ->
unless @started
@observeWithMutationObserver() or @observeWithMutationEvent()
@started = true
observeWithMutationObserver: ->
if MutationObserver?
observer = new MutationObserver @processMutations
observer.observe(document.documentElement, childList: true, subtree: true)
true
observeWithMutationEvent: ->
addEventListener("DOMNodeInserted", @processInsertion, false)
true
findSignificantElements: (element) ->
elements = []
if element?.nodeType is Node.ELEMENT_NODE
elements.push(element) if elementMatchesSelector(element, @selector)
elements.push(element.querySelectorAll(@selector)...)
elements
processMutations: (mutations) =>
elements = []
for mutation in mutations
switch mutation.type
when "childList"
for node in mutation.addedNodes
elements.push(@findSignificantElements(node)...)
@notify(elements)
processInsertion: (event) =>
elements = @findSignificantElements(event.target)
@notify(elements)
notify: (elements) ->
if elements?.length
@callback?(elements)
Version data entries
5 entries across 5 versions & 1 rubygems