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