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number-polyfill.coffee
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number-polyfill.coffee
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###
HTML5 Number polyfill | Jonathan Stipe | https://github.com/jonstipe/number-polyfill
###
(($) ->
i = document.createElement "input"
i.setAttribute "type", "number"
if i.type == "text"
$.fn.inputNumber = ->
getParams = (elem) ->
$elem = $ elem
step = $elem.attr 'step'
min = $elem.attr 'min'
max = $elem.attr 'max'
val = parseFloat $elem.val()
step = if /^-?\d+(?:\.\d+)?$/.test(step) then parseFloat(step) else null
min = if /^-?\d+(?:\.\d+)?$/.test(min) then parseFloat(min) else null
max = if /^-?\d+(?:\.\d+)?$/.test(max) then parseFloat(max) else null
if isNaN val
val = min || 0
{
min: min
max: max
step: step
val: val
}
clipValues = (value, min, max) ->
if max? && value > max
max
else if min? && value < min
min
else
value
extractNumDecimalDigits = (input) ->
if input?
num = 0
raisedNum = input
while raisedNum != Math.round raisedNum
num += 1
raisedNum = input * Math.pow(10, num)
num
else
0
matchStep = (value, min, max, step) ->
stepDecimalDigits = extractNumDecimalDigits step
unless step?
value
else if stepDecimalDigits == 0
mod = (value - (min || 0)) % step
if mod == 0
value;
else
stepDown = value - mod
stepUp = stepDown + step
if (stepUp > max) || ((value - stepDown) < (stepUp - value))
stepDown
else
stepUp
else
raiseTo = Math.pow 10, stepDecimalDigits
raisedStep = step * raiseTo
raisedMod = (value - (min || 0)) * raiseTo % raisedStep
if raisedMod == 0
value
else
raisedValue = value * raiseTo
raisedStepDown = raisedValue - raisedMod
raisedStepUp = raisedStepDown + raisedStep
if ((raisedStepUp / raiseTo) > max) || ((raisedValue - raisedStepDown) < (raisedStepUp - raisedValue))
raisedStepDown / raiseTo
else
raisedStepUp / raiseTo
increment = (elem) ->
unless $(elem).is(":disabled")
params = getParams elem
raiseTo = Math.pow 10, Math.max(extractNumDecimalDigits(params['val']), extractNumDecimalDigits(params['step']))
newVal = (Math.round(params['val'] * raiseTo) + Math.round((params['step'] || 1) * raiseTo)) / raiseTo
newVal = params['max'] if params['max']? && newVal > params['max']
newVal = matchStep newVal, params['min'], params['max'], params['step']
$(elem).val(newVal).change()
null
decrement = (elem) ->
unless $(elem).is(":disabled")
params = getParams elem
raiseTo = Math.pow 10, Math.max(extractNumDecimalDigits(params['val']), extractNumDecimalDigits(params['step']))
newVal = (Math.round(params['val'] * raiseTo) - Math.round((params['step'] || 1) * raiseTo)) / raiseTo
newVal = params['min'] if params['min']? && newVal < params['min']
newVal = matchStep newVal, params['min'], params['max'], params['step']
$(elem).val(newVal).change()
null
domMouseScrollHandler = (e) ->
e.preventDefault()
if e.originalEvent.detail < 0
increment this
else
decrement this
null
mouseWheelHandler = (e) ->
e.preventDefault()
if e.originalEvent.wheelDelta > 0
increment this
else
decrement this
null
$(this).filter('input[type="number"]').each ->
elem = this
$elem = $(elem)
halfHeight = ($elem.outerHeight() / 2) + 'px'
upBtn = document.createElement 'div'
downBtn = document.createElement 'div'
$upBtn = $ upBtn
$downBtn = $ downBtn
btnContainer = document.createElement 'div'
$upBtn
.addClass('number-spin-btn number-spin-btn-up')
.css('height', halfHeight)
.text('+')
$downBtn
.addClass('number-spin-btn number-spin-btn-down')
.css('height', halfHeight)
.text('-')
btnContainer.appendChild upBtn
btnContainer.appendChild downBtn
$(btnContainer).addClass('number-spin-btn-container').insertAfter elem
$elem.on
focus: (e) ->
$elem.on
DOMMouseScroll: domMouseScrollHandler
mousewheel: mouseWheelHandler
null
blur: (e) ->
$elem.off
DOMMouseScroll: domMouseScrollHandler
mousewheel: mouseWheelHandler
null
keypress: (e) ->
if e.keyCode == 38 # up arrow
increment this
else if e.keyCode == 40 # down arrow
decrement this
else if (e.keyCode not in [8, 9, 35, 36, 37, 39]) && (e.which not in [45, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57])
e.preventDefault()
null
change: (e) ->
if e.originalEvent?
params = getParams this
newVal = clipValues params['val'], params['min'], params['max']
newVal = matchStep newVal, params['min'], params['max'], params['step'], params['stepDecimal']
$(this).val newVal
null
$upBtn.on "mousedown", (e) ->
increment elem
timeoutFunc = (elem, incFunc) ->
incFunc elem
$elem.data "timeoutID", window.setTimeout(timeoutFunc, 10, elem, incFunc)
null
releaseFunc = (e) ->
window.clearTimeout $elem.data("timeoutID")
$(document).off 'mouseup', releaseFunc
$upBtn.off 'mouseleave', releaseFunc
null
$(document).on 'mouseup', releaseFunc
$upBtn.on 'mouseleave', releaseFunc
$elem.data "timeoutID", window.setTimeout(timeoutFunc, 700, elem, increment)
null
$downBtn.on "mousedown", (e) ->
decrement elem
timeoutFunc = (elem, decFunc) ->
decFunc elem
$elem.data "timeoutID", window.setTimeout(timeoutFunc, 10, elem, decFunc)
null
releaseFunc = (e) ->
window.clearTimeout $elem.data("timeoutID")
$(document).off 'mouseup', releaseFunc
$downBtn.off 'mouseleave', releaseFunc
null
$(document).on 'mouseup', releaseFunc
$downBtn.on 'mouseleave', releaseFunc
$elem.data "timeoutID", window.setTimeout(timeoutFunc, 700, elem, decrement)
null
$elem.css "textAlign", 'right'
$(btnContainer).css("opacity", $elem.css("opacity")) if $elem.css("opacity") != "1"
$(btnContainer).css("visibility", $elem.css("visibility")) if $elem.css("visibility") != "visible"
$(btnContainer).css("display", $elem.css("display")) if elem.style.display != ""
if (WebKitMutationObserver? || MutationObserver?)
attrMutationCallback = (mutations, observer) ->
(
if mutation.type == "attributes"
if mutation.attributeName == "class"
$(btnContainer).removeClass(mutation.oldValue).addClass(elem.className)
else if mutation.attributeName == "style"
$(btnContainer).css {
"opacity": elem.style.opacity
"visibility": elem.style.visibility
"display": elem.style.display
}
) for mutation in mutations
null
attrObserver = if (WebKitMutationObserver?) then new WebKitMutationObserver(attrMutationCallback) else (if (MutationObserver?) then new MutationObserver(attrMutationCallback) else null)
attrObserver.observe elem, {
attributes: true
attributeOldValue: true
attributeFilter: ["class", "style"]
}
else if MutationEvent?
$elem.on "DOMAttrModified", (evt) ->
if evt.originalEvent.attrName == "class"
$(btnContainer).removeClass(evt.originalEvent.prevValue).addClass(evt.originalEvent.newValue)
else if evt.originalEvent.attrName == "style"
$(btnContainer).css {
"display": elem.style.display
"visibility": elem.style.visibility
"opacity": elem.style.opacity
}
null
null
$(this)
$ ->
$('input[type="number"]').inputNumber()
null
null
else
$.fn.inputNumber = ->
$(this)
null
null
)(jQuery)