123 lines
3.6 KiB
CoffeeScript
123 lines
3.6 KiB
CoffeeScript
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#
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# @param {Function} callback The callback is called when the connector is initialized.
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# @param {String} initial_user_id Optional. You can set you own user_id (since the ids of duiclient are not always unique)
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#
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createIwcConnector = (callback, initial_user_id)->
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iwcHandler = {}
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duiClient = new DUIClient()
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#@duiClient = new iwc.Client()
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duiClient.connect (intent)->
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iwcHandler[intent.action]?.map (f)->
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setTimeout ()->
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f intent
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, 0
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duiClient.initOK()
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received_HB = null
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#
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# The Iwc Connector adds support for the Inter-Widget-Communication protocol that is used in the Role-SDK.
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# @see http://dbis.rwth-aachen.de/cms/projects/the-xmpp-experience#interwidget-communication
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# @see http://dbis.rwth-aachen.de/cms/projects/ROLE
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#
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class IwcConnector
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#
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# @param {Engine} engine The transformation engine
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# @param {HistoryBuffer} HB
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# @param {Array<Function>} execution_listener You must ensure that whenever an operation is executed, every function in this Array is called.
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# @param {Yatta} yatta The Yatta framework.
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#
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constructor: (@engine, @HB, @execution_listener, @yatta)->
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@duiClient = duiClient
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@iwcHandler = iwcHandler
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send_ = (o)=>
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if Object.getOwnPropertyNames(@initialized).length isnt 0
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@send o
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@execution_listener.push send_
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@initialized = {}
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receiveHB = (json)=>
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HB = json.extras.HB
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him = json.extras.user
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this.engine.applyOpsCheckDouble HB
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@initialized[him] = true
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iwcHandler["Yatta_push_HB_element"] = [receiveHB]
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@sendIwcIntent "Yatta_get_HB_element", {}
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receive_ = (intent)=>
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o = intent.extras
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if @initialized[o.uid.creator]? # initialize first
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@receive o
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@iwcHandler["Yatta_new_operation"] = [receive_]
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if received_HB?
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@engine.applyOpsCheckDouble received_HB
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sendHistoryBuffer = ()=>
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json =
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HB : @yatta.getHistoryBuffer()._encode()
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user : @yatta.getUserId()
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@sendIwcIntent "Yatta_push_HB_element", json
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@iwcHandler["Yatta_get_HB_element"] = [sendHistoryBuffer]
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#
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# This function is called whenever an operation was executed.
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# @param {Operation} o The operation that was executed.
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#
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send: (o)->
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if o.uid.creator is @HB.getUserId() and (typeof o.uid.op_number isnt "string")
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@sendIwcIntent "Yatta_new_operation", o
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#
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# This function is called whenever an operation was received from another peer.
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# @param {Operation} o The operation that was received.
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#
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receive: (o)->
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if o.uid.creator isnt @HB.getUserId()
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@engine.applyOp o
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#
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# Helper for sending iwc intents.
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# @param {String} action_name The name of the action that is going to be send.
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# @param {String} content The content that is atteched to the intent.
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#
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sendIwcIntent: (action_name, content)->
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intent =
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action: action_name
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component: ""
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data: ""
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dataType: ""
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flags: ["PUBLISH_GLOBAL"]
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extras: content
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@duiClient.sendIntent(intent)
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init = ()->
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proposed_user_id = null
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if initial_user_id?
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proposed_user_id = initial_user_id
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else
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# proposed_user_id = duiClient.getIwcClient()._componentName #TODO: This is stupid! why can't i use this?
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proposed_user_id = Math.floor(Math.random()*1000000)
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callback IwcConnector, proposed_user_id
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setTimeout init, 5000
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undefined
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module.exports = createIwcConnector
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if window?
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if not window.Y?
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window.Y = {}
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window.Y.createIwcConnector = createIwcConnector
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