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diff --git a/debian/missing-sources/epoch/src/model.coffee b/debian/missing-sources/epoch/src/model.coffee
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+++ b/debian/missing-sources/epoch/src/model.coffee
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+# Data model for epoch charts. By instantiating a model and passing it to each
+# of the charts on a page the application programmer can update data once and
+# have each of the charts respond accordingly.
+#
+# In addition to setting basic / historical data via the setData method, the
+# model also supports the push method, which when used will cause real-time
+# plots to automatically update and animate.
+class Epoch.Model extends Epoch.Events
+  defaults =
+    dataFormat: null
+
+  # Creates a new Model.
+  # @option options dataFormat The default data fromat for the model.
+  # @option data Initial data for the model.
+  constructor: (options={}) ->
+    super()
+    options = Epoch.Util.defaults options, defaults
+    @dataFormat = options.dataFormat
+    @data = options.data
+    @loading = false
+
+  # Sets the model's data.
+  # @param data Data to set for the model.
+  # @event data:updated Instructs listening charts that new data is available.
+  setData: (data) ->
+    @data = data
+    @trigger 'data:updated'
+
+  # Pushes a new entry into the model.
+  # @param entry Entry to push.
+  # @event data:push Instructs listening charts that a new data entry is available.
+  push: (entry) ->
+    @entry = entry
+    @trigger 'data:push'
+
+  # Determines if the model has data.
+  # @return true if the model has data, false otherwise.
+  hasData: ->
+    @data?
+
+  # Retrieves and formats adata for the specific chart type and data format.
+  # @param [String] type Type of the chart for which to fetch the data.
+  # @param [String, Object] dataFormat (optional) Used to override the model's default data format.
+  # @return The model's data formatted based the parameters.
+  getData: (type, dataFormat) ->
+    dataFormat ?= @dataFormat
+    Epoch.Data.formatData @data, type, dataFormat
+
+  # Retrieves the latest data entry that was pushed into the model.
+  # @param [String] type Type of the chart for which to fetch the data.
+  # @param [String, Object] dataFormat (optional) Used to override the model's default data format.
+  # @return The model's next data entry formatted based the parameters.
+  getNext: (type, dataFormat) ->
+    dataFormat ?= @dataFormat
+    Epoch.Data.formatEntry @entry, type, dataFormat