foodsoft/vendor/assets/javascripts/touchclick.js.coffee

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###!
Copyright (c) 2013 Derek Petersen https://github.com/tuxracer/touchclick MIT License
https://raw2.github.com/tuxracer/touchclick/3.0.1/src/touchclick.coffee
###
$ = if typeof jQuery is 'function' then jQuery else require 'jquery'
activeClass = 'touchactive'
preventDefaultClick = false
# Store a timestamp of when the last touch event occurred
lastTouched = 0
# Support devices with both touch and mouse (e.g. Windows 8, Chromebook Pixel)
ignoreEvent = (e) ->
currentTimestamp = Math.round (new Date()).getTime() / 1000
secondsSinceTouch = currentTimestamp - lastTouched
if e.type.match 'touchstart|touchmove|touchend'
lastTouched = currentTimestamp
secondsSinceTouch < 3 and e.type.match 'mouse'
getTouchclickEl = (target) ->
$targetEl = $ target
# For delegated events you can optionally provide an element
# that will have the active style added when touch is active
# by adding data-touchclick="true"
$touchclickEl = $targetEl.closest '*[data-touchclick="true"]'
if $touchclickEl.length
$touchclickEl
else
$targetEl
touchstart = (e) ->
getTouchclickEl(e.target).addClass(activeClass) unless ignoreEvent e
touchmove = (e) ->
getTouchclickEl(e.target).removeClass(activeClass)
touchend = (e) ->
$touchclickEl = getTouchclickEl e.target
if $touchclickEl.hasClass(activeClass) and not ignoreEvent e
e.type = 'touchclick'
$touchclickEl
.trigger(e)
.removeClass(activeClass)
events = (type) ->
$el = $ this
if preventDefaultClick
$el[type] 'click', (e) ->
e.preventDefault()
if window.navigator.msPointerEnabled
$el[type] 'MSPointerDown', touchstart
$el[type] 'MSPointerUp', touchend
else
$el[type] 'touchstart mousedown', touchstart
$el[type] 'touchmove mouseout', touchmove
$el[type] 'touchend mouseup', touchend
$.event.special.touchclick =
setup: ->
events.call this, 'on'
teardown: ->
events.call this, 'off'