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56 lines
1.5 KiB
56 lines
1.5 KiB
class app.ServiceWorker
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$.extend @prototype, Events
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@isEnabled: ->
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!!navigator.serviceWorker
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constructor: ->
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@registration = null
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@installingRegistration = null
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@notifyUpdate = true
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navigator.serviceWorker.register(app.config.service_worker_path, {scope: '/'})
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.then((registration) => @updateRegistration(registration))
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.catch((error) -> console.error 'Could not register service worker:', error)
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update: ->
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return unless @registration
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@notifyUpdate = true
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return @doUpdate()
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updateInBackground: ->
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return unless @registration
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@notifyUpdate = false
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return @doUpdate()
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reload: ->
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return @updateInBackground().then(() -> app.reboot())
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doUpdate: ->
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return @registration.update().catch(->)
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updateRegistration: (registration) ->
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$.off @registration, 'updatefound', @onUpdateFound if @registration
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$.off @installingRegistration, 'statechange', @onStateChange if @installingRegistration
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@registration = registration
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@installingRegistration = null
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$.on @registration, 'updatefound', @onUpdateFound
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return
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onUpdateFound: () =>
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@installingRegistration = @registration.installing
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$.on @installingRegistration, 'statechange', @onStateChange
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return
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onStateChange: () =>
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if @installingRegistration.state == 'installed' and navigator.serviceWorker.controller
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@updateRegistration(@installingRegistration)
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@onUpdateReady()
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return
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onUpdateReady: ->
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@trigger 'updateready' if @notifyUpdate
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return
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