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author | Matt A. Tobin <email@mattatobin.com> | 2018-02-09 06:46:43 -0500 |
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committer | Matt A. Tobin <email@mattatobin.com> | 2018-02-09 06:46:43 -0500 |
commit | ac46df8daea09899ce30dc8fd70986e258c746bf (patch) | |
tree | 2750d3125fc253fd5b0671e4bd268eff1fd97296 /addon-sdk/source/lib/sdk/output/system.js | |
parent | 8cecf8d5208f3945b35f879bba3015bb1a11bec6 (diff) | |
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Move Add-on SDK source to toolkit/jetpack
Diffstat (limited to 'addon-sdk/source/lib/sdk/output/system.js')
-rw-r--r-- | addon-sdk/source/lib/sdk/output/system.js | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/addon-sdk/source/lib/sdk/output/system.js b/addon-sdk/source/lib/sdk/output/system.js deleted file mode 100644 index 4fb16dcd5..000000000 --- a/addon-sdk/source/lib/sdk/output/system.js +++ /dev/null @@ -1,71 +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"; - -const { Cc, Ci, Cr } = require("chrome"); -const { Input, start, stop, receive, outputs } = require("../event/utils"); -const { id: addonID } = require("../self"); -const { setImmediate } = require("../timers"); -const { notifyObservers } = Cc['@mozilla.org/observer-service;1']. - getService(Ci.nsIObserverService); - -const NOT_AN_INPUT = "OutputPort can be used only for sending messages"; - -// `OutputPort` creates a port to which messages can be send. Those -// messages are actually disptached as `subject`'s of the observer -// notifications. This is handy for communicating between different -// components of the SDK. By default messages are dispatched -// asynchronously, although `options.sync` can be used to make them -// synchronous. If `options.id` is given `topic` for observer -// notifications is generated by namespacing it, to avoid spamming -// other SDK add-ons. It's also possible to provide `options.topic` -// to use excat `topic` without namespacing it. -// -// Note: Symmetric `new InputPort({ id: "x" })` instances can be used to -// receive messages send to the instances of `new OutputPort({ id: "x" })`. -const OutputPort = function({id, topic, sync}) { - this.id = id || topic; - this.sync = !!sync; - this.topic = topic || "sdk:" + addonID + ":" + id; -}; -// OutputPort extends base signal type to implement same message -// receiving interface. -OutputPort.prototype = new Input(); -OutputPort.constructor = OutputPort; - -// OutputPort can not be consumed there for starting or stopping it -// is not supported. -OutputPort.prototype[start] = _ => { throw TypeError(NOT_AN_INPUT); }; -OutputPort.prototype[stop] = _ => { throw TypeError(NOT_AN_INPUT); }; - -// Port reecives message send to it, which will be dispatched via -// observer notification service. -OutputPort.receive = ({topic, sync}, message) => { - const type = typeof(message); - const supported = message === null || - type === "object" || - type === "function"; - - // There is no sensible way to wrap JS primitives that would make sense - // for general observer notification users. It's also probably not very - // useful to dispatch JS primitives as subject of observer service, there - // for we do not support those use cases. - if (!supported) - throw new TypeError("Unsupproted message type: `" + type + "`"); - - // Normalize `message` to create a valid observer notification `subject`. - // If `message` is `null`, implements `nsISupports` interface or already - // represents wrapped JS object use it as is. Otherwise create a wrapped - // object so that observers could receive it. - const subject = message === null ? null : - message instanceof Ci.nsISupports ? message : - message.wrappedJSObject ? message : - {wrappedJSObject: message}; - if (sync) - notifyObservers(subject, topic, null); - else - setImmediate(notifyObservers, subject, topic, null); -}; -OutputPort.prototype[receive] = OutputPort.receive; -exports.OutputPort = OutputPort; |