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7edafa3819
Summary: Lots o docs Test Plan: Run tests, review docs Reviewers: evan Reviewed By: evan Differential Revision: https://review.inboxapp.com/D1496
68 lines
2 KiB
CoffeeScript
68 lines
2 KiB
CoffeeScript
{Disposable} = require 'event-kit'
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Grim = require 'grim'
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# Extended: Manages the deserializers used for serialized state
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#
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# An instance of this class is always available as the `atom.deserializers`
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# global.
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#
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# Section: Atom
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#
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# ## Examples
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#
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# ```coffee
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# class MyPackageView extends View
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# atom.deserializers.add(this)
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#
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# @deserialize: (state) ->
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# new MyPackageView(state)
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#
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# constructor: (@state) ->
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#
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# serialize: ->
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# @state
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# ```
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module.exports =
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class DeserializerManager
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constructor: ->
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@deserializers = {}
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# Public: Register the given class(es) as deserializers.
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#
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# * `deserializers` One or more deserializers to register. A deserializer can
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# be any object with a `.name` property and a `.deserialize()` method. A
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# common approach is to register a *constructor* as the deserializer for its
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# instances by adding a `.deserialize()` class method.
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add: (deserializers...) ->
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@deserializers[deserializer.name] = deserializer for deserializer in deserializers
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new Disposable =>
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delete @deserializers[deserializer.name] for deserializer in deserializers
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remove: (classes...) ->
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Grim.deprecate("Call .dispose() on the Disposable return from ::add instead")
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delete @deserializers[name] for {name} in classes
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# Public: Deserialize the state and params.
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#
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# * `state` The state {Object} to deserialize.
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# * `params` The params {Object} to pass as the second arguments to the
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# deserialize method of the deserializer.
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deserialize: (state, params) ->
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return unless state?
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if deserializer = @get(state)
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stateVersion = state.get?('version') ? state.version
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return if deserializer.version? and deserializer.version isnt stateVersion
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deserializer.deserialize(state, params)
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else
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console.warn "No deserializer found for", state
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# Get the deserializer for the state.
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#
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# * `state` The state {Object} being deserialized.
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get: (state) ->
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return unless state?
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name = state.get?('deserializer') ? state.deserializer
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@deserializers[name]
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