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Diffstat (limited to 'addon-sdk/source/lib/dev/ports.js')
-rw-r--r-- | addon-sdk/source/lib/dev/ports.js | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/addon-sdk/source/lib/dev/ports.js b/addon-sdk/source/lib/dev/ports.js deleted file mode 100644 index a41f59eb7..000000000 --- a/addon-sdk/source/lib/dev/ports.js +++ /dev/null @@ -1,64 +0,0 @@ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ - -"use strict"; - -module.metadata = { - "stability": "experimental" -}; - -// This module provides `marshal` and `demarshal` functions -// that can be used to send MessagePort's over `nsIFrameMessageManager` -// until Bug 914974 is fixed. - -const { add, iterator } = require("../sdk/lang/weak-set"); -const { curry } = require("../sdk/lang/functional"); - -var id = 0; -const ports = new WeakMap(); - -// Takes `nsIFrameMessageManager` and `MessagePort` instances -// and returns a handle representing given `port`. Messages -// received on given `port` will be forwarded to a message -// manager under `sdk/port/message` and messages like: -// { port: { type: "MessagePort", id: 2}, data: data } -// Where id is an identifier associated with a given `port` -// and `data` is an `event.data` received on port. -const marshal = curry((manager, port) => { - if (!ports.has(port)) { - id = id + 1; - const handle = {type: "MessagePort", id: id}; - // Bind id to the given port - ports.set(port, handle); - - // Obtain a weak reference to a port. - add(exports, port); - - port.onmessage = event => { - manager.sendAsyncMessage("sdk/port/message", { - port: handle, - message: event.data - }); - }; - - return handle; - } - return ports.get(port); -}); -exports.marshal = marshal; - -// Takes `nsIFrameMessageManager` instance and a handle returned -// `marshal(manager, port)` returning a `port` that was passed -// to it. Note that `port` may be GC-ed in which case returned -// value will be `null`. -const demarshal = curry((manager, {type, id}) => { - if (type === "MessagePort") { - for (let port of iterator(exports)) { - if (id === ports.get(port).id) - return port; - } - } - return null; -}); -exports.demarshal = demarshal; |