40 lines
707 B
CoffeeScript
40 lines
707 B
CoffeeScript
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class @Autosave
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constructor: (field, key) ->
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@field = field
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key = key.join("/") if key.join?
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@key = "autosave/#{key}"
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@field.data "autosave", this
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@restore()
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@field.on "input", => @save()
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restore: ->
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return unless window.localStorage?
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try
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text = window.localStorage.getItem @key
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catch
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return
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@field.val text if text?.length > 0
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@field.trigger "input"
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save: ->
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return unless window.localStorage?
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text = @field.val()
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if text?.length > 0
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try
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window.localStorage.setItem @key, text
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else
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@reset()
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reset: ->
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return unless window.localStorage?
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try
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window.localStorage.removeItem @key
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