ViewModel.coffeesrc/ | |
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`define(['ko', './Template'],
function(ko, Template){`
pushHandler = (event) ->
element = event.target
event.preventDefault()
href = element.get 'href'
History.pushState null, null, href
ko.bindingHandlers.pushState =
init: (element, valueAccessor) ->
element.addEvent 'click', pushHandler
ko.utils.domNodeDisposal.addDisposeCallback element, ->
element.removeEvent 'click', pushHandler
ko.bindingHandlers.editable =
init: (element, valueAccessor, allBindingsAccessor) -> | |
get the options that were passed in | options = allBindingsAccessor().jeditableOptions or {} |
"submit" should be the default onblur action like regular ko controls | if !options.onblur
options.onblur = 'submit'; |
set the value on submit and pass the editable the options | editFn = ->
element.contentEditable = true
element.focus()
blurFn = ->
valueAccessor() element.get('text')
element.contentEditable = false
element.addEvents
click: editFn
blur: blurFn
ko.utils.domNodeDisposal.addDisposeCallback element, ->
element.removeEvents
click: editFn
blur: blurFn |
update the control when the view model changes | update: (element, valueAccessor) ->
value = ko.utils.unwrapObservable valueAccessor()
$(element).set 'html', value |
Helper to allow multiple ViewModels in same html template | ko.bindingHandlers.stopBinding =
init: ->
return controlsDescendantBindings: true
ko.virtualElements.allowedBindings.stopBinding = true
ViewModel = new Class
Implements: [Options, Events, Template]
options: |
If specified then will render dust template | template: null
init: -> |
Define the properties of the ViewModel here. Functions can be put directly on the class but properties can't be on the prototype so must go here. It will also group them in one place. | properties: ->
initialize: (@element, options) ->
@setOptions options
@init()
@properties()
if @options.template
el = @renderTemplate @options.template
@element.adopt el
@applyBindings()
return this
computed: (fn, bind) ->
ko.computed fn, bind
observable: (value) ->
ko.observable value
observableArray: (value=[]) ->
ko.observableArray value
applyBindings: ->
ko.applyBindings this, @element
destroy: ->
ko.cleanNode @element
return ViewModel
`})`
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