86 lines
1.9 KiB
CoffeeScript
86 lines
1.9 KiB
CoffeeScript
class ZeroFrame extends Class
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constructor: (url) ->
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@url = url
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@waiting_cb = {}
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@wrapper_nonce = document.location.href.replace(/.*wrapper_nonce=([A-Za-z0-9]+).*/, "$1")
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@connect()
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@next_message_id = 1
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@history_state = {}
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@init()
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init: ->
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@
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connect: ->
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@target = window.parent
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window.addEventListener("message", @onMessage, false)
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@cmd("innerReady")
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# Save scrollTop
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window.addEventListener "beforeunload", (e) =>
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@log "save scrollTop", window.pageYOffset
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@history_state["scrollTop"] = window.pageYOffset
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@cmd "wrapperReplaceState", [@history_state, null]
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# Restore scrollTop
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@cmd "wrapperGetState", [], (state) =>
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@history_state = state if state?
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@log "restore scrollTop", state, window.pageYOffset
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if window.pageYOffset == 0 and state
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window.scroll(window.pageXOffset, state.scrollTop)
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onMessage: (e) =>
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message = e.data
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cmd = message.cmd
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if cmd == "response"
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if @waiting_cb[message.to]?
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@waiting_cb[message.to](message.result)
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else
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@log "Websocket callback not found:", message
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else if cmd == "wrapperReady" # Wrapper inited later
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@cmd("innerReady")
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else if cmd == "ping"
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@response message.id, "pong"
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else if cmd == "wrapperOpenedWebsocket"
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@onOpenWebsocket()
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else if cmd == "wrapperClosedWebsocket"
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@onCloseWebsocket()
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else
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@onRequest cmd, message.params
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onRequest: (cmd, message) =>
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@log "Unknown request", message
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response: (to, result) ->
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@send {"cmd": "response", "to": to, "result": result}
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cmd: (cmd, params={}, cb=null) ->
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@send {"cmd": cmd, "params": params}, cb
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send: (message, cb=null) ->
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message.wrapper_nonce = @wrapper_nonce
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message.id = @next_message_id
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@next_message_id += 1
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@target.postMessage(message, "*")
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if cb
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@waiting_cb[message.id] = cb
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onOpenWebsocket: =>
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@log "Websocket open"
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onCloseWebsocket: =>
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@log "Websocket close"
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window.ZeroFrame = ZeroFrame
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