.js.coffee -> .coffee

 It was initially required, but support for the shorthand has been
 supported since sprockets 2.1. Eventually 4.x will only support the
 shorthand version. Just want to get new people using the prefer stuff
 ASAP.

1 files changed, 65 insertions, 0 deletions

diff --git a/lib/assets/javascripts/cable/connection.coffee b/lib/assets/javascripts/cable/connection.coffee
new file mode 100644
index 0000000000..2259ddcedd
--- /dev/null
+++ b/lib/assets/javascripts/cable/connection.coffee
@@ -0,0 +1,65 @@
+# Encapsulate the cable connection held by the consumer. This is an internal class not intended for direct user manipulation.
+class Cable.Connection
+  constructor: (@consumer) ->
+    @open()
+
+  send: (data) ->
+    if @isOpen()
+      @webSocket.send(JSON.stringify(data))
+      true
+    else
+      false
+
+  open: ->
+    if @isOpen()
+      throw new Error("Must close existing connection before opening")
+    else
+      @webSocket = new WebSocket(@consumer.url)
+      @installEventHandlers()
+
+  close: ->
+    @webSocket?.close()
+
+  reopen: ->
+    @close()
+    @open()
+
+  isOpen: ->
+    @isState("open")
+
+  # Private
+
+  isState: (states...) ->
+    @getState() in states
+
+  getState: ->
+    return state.toLowerCase() for state, value of WebSocket when value is @webSocket?.readyState
+    null
+
+  installEventHandlers: ->
+    for eventName of @events
+      handler = @events[eventName].bind(this)
+      @webSocket["on#{eventName}"] = handler
+
+  events:
+    message: (event) ->
+      {identifier, message} = JSON.parse(event.data)
+      @consumer.subscriptions.notify(identifier, "received", message)
+
+    open: ->
+      @disconnected = false
+      @consumer.subscriptions.reload()
+
+    close: ->
+      @disconnect()
+
+    error: ->
+      @disconnect()
+
+  disconnect: ->
+    return if @disconnected
+    @disconnected = true
+    @consumer.subscriptions.notifyAll("disconnected")
+
+  toJSON: ->
+    state: @getState()