mirror of
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108 lines
3.4 KiB
CoffeeScript
108 lines
3.4 KiB
CoffeeScript
class SuperModel
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constructor: ->
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@models = {}
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@collections = {}
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_.extend(@, Backbone.Events)
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populateModel: (model) ->
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@mustPopulate = model
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model.saveBackups = @shouldSaveBackups(model)
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model.fetch() unless model.loaded or model.loading
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@listenToOnce(model, 'sync', @modelLoaded) unless model.loaded
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@listenToOnce(model, 'error', @modelErrored) unless model.loaded
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url = model.url()
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@models[url] = model unless @models[url]?
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@modelLoaded(model) if model.loaded
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# replace or overwrite
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shouldLoadReference: (model) -> true
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shouldLoadProjection: (model) -> false
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shouldPopulate: (url) -> true
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shouldSaveBackups: (model) -> false
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modelErrored: (model) ->
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@trigger 'error'
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@removeEventsFromModel(model)
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modelLoaded: (model) ->
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schema = model.schema()
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refs = model.getReferencedModels(model.attributes, schema, '/', @shouldLoadProjection)
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refs = [] unless @mustPopulate is model or @shouldPopulate(model)
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# console.log 'Loaded', model.get('name')
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for ref, i in refs when @shouldLoadReference ref
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ref.saveBackups = @shouldSaveBackups(ref)
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refURL = ref.url()
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continue if @models[refURL]
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@models[refURL] = ref
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ref.fetch()
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@listenToOnce(ref, 'sync', @modelLoaded)
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@trigger 'loaded-one', model: model
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@trigger 'loaded-all' if @finished()
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@removeEventsFromModel(model)
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removeEventsFromModel: (model) ->
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model.off 'sync', @modelLoaded, @
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model.off 'error', @modelErrored, @
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getModel: (ModelClass_or_url, id) ->
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return @getModelByURL(ModelClass_or_url) if _.isString(ModelClass_or_url)
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m = new ModelClass_or_url(_id: id)
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return @getModelByURL(m.url())
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getModelByURL: (modelURL) ->
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return @models[modelURL] or null
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getModelByOriginalAndMajorVersion: (ModelClass, original, majorVersion=0) ->
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_.find @models, (m) ->
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m.get('original') is original and m.get('version').major is majorVersion and m.constructor.className is ModelClass.className
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getModels: (ModelClass) ->
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# can't use instanceof. SuperModel gets passed between windows, and one window
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# will have different class objects than another window.
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# So compare className instead.
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return (m for key, m of @models when m.constructor.className is ModelClass.className) if ModelClass
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return _.values @models
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addModel: (model) ->
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url = model.url()
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return console.warn "Tried to add Model '#{url}' to SuperModel, but it wasn't loaded." unless model.loaded
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#return console.warn "Tried to add Model '#{url}' to SuperModel when we already had it." if @models[url]?
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@models[url] = model
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getCollection: (collection) ->
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url = collection.url
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url = url() if _.isFunction(url)
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return @collections[url] or collection
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addCollection: (collection) ->
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url = collection.url
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url = url() if _.isFunction(url)
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if @collections[url]?
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return console.warn "Tried to add Collection '#{url}' to SuperModel when we already had it."
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@collections[url] = collection
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# consolidate models
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for model, i in collection.models
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cachedModel = @getModelByURL(model.url())
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if cachedModel
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collection.models[i] = cachedModel
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else
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@addModel(model)
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collection
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progress: ->
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total = 0
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loaded = 0
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for model in _.values @models
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total += 1
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loaded += 1 if model.loaded
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return 1.0 unless total
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return loaded / total
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finished: ->
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return @progress() == 1.0
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module.exports = SuperModel
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