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#= require ./dom
{ matches } = Rails
# Polyfill for CustomEvent in IE9+
# https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent/CustomEvent#Polyfill
CustomEvent = window.CustomEvent
if typeof CustomEvent is 'function'
CustomEvent = (event, params) ->
evt = document.createEvent('CustomEvent')
evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail)
evt
CustomEvent.prototype = window.Event.prototype
# Triggers an custom event on an element and returns false if the event result is false
fire = Rails.fire = (obj, name, data) ->
event = new CustomEvent(
name,
bubbles: true,
cancelable: true,
detail: data,
)
obj.dispatchEvent(event)
!event.defaultPrevented
# Helper function, needed to provide consistent behavior in IE
Rails.stopEverything = (e) ->
fire(e.target, 'ujs:everythingStopped')
e.preventDefault()
e.stopPropagation()
e.stopImmediatePropagation()
Rails.delegate = (element, selector, eventType, handler) ->
element.addEventListener eventType, (e) ->
target = e.target
target = target.parentNode until not (target instanceof Element) or matches(target, selector)
if target instanceof Element and handler.call(target, e) == false
e.preventDefault()
e.stopPropagation()
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