1 files changed, 0 insertions, 113 deletions
diff --git a/addon-sdk/source/lib/sdk/input/system.js b/addon-sdk/source/lib/sdk/input/system.js
deleted file mode 100644
index 66bc6daec..000000000
--- a/addon-sdk/source/lib/sdk/input/system.js
+++ /dev/null
@@ -1,113 +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, Cu } = require("chrome");
-const { Input, start, stop, end, receive, outputs } = require("../event/utils");
-const { once, off } = require("../event/core");
-const { id: addonID } = require("../self");
-
-const unloadMessage = require("@loader/unload");
-const observerService = Cc['@mozilla.org/observer-service;1'].
-                          getService(Ci.nsIObserverService);
-const { ShimWaiver } = Cu.import("resource://gre/modules/ShimWaiver.jsm");
-const addObserver = ShimWaiver.getProperty(observerService, "addObserver");
-const removeObserver = ShimWaiver.getProperty(observerService, "removeObserver");
-
-
-const addonUnloadTopic = "sdk:loader:destroy";
-
-const isXrayWrapper = Cu.isXrayWrapper;
-// In the past SDK used to double-wrap notifications dispatched, which
-// made them awkward to use outside of SDK. At present they no longer
-// do that, although we still supported for legacy reasons.
-const isLegacyWrapper = x =>
-    x && x.wrappedJSObject &&
-    "observersModuleSubjectWrapper" in x.wrappedJSObject;
-
-const unwrapLegacy = x => x.wrappedJSObject.object;
-
-// `InputPort` provides a way to create a signal out of the observer
-// notification subject's for the given `topic`. If `options.initial`
-// is provided it is used as initial value otherwise `null` is used.
-// Constructor can be given `options.id` that will be used to create
-// a `topic` which is namespaced to an add-on (this avoids conflicts
-// when multiple add-on are used, although in a future host probably
-// should just be shared across add-ons). It is also possible to
-// specify a specific `topic` via `options.topic` which is used as
-// without namespacing. Created signal ends whenever add-on is
-// unloaded.
-const InputPort = function InputPort({id, topic, initial}) {
-  this.id = id || topic;
-  this.topic = topic || "sdk:" + addonID + ":" + id;
-  this.value = initial === void(0) ? null : initial;
-  this.observing = false;
-  this[outputs] = [];
-};
-
-// InputPort type implements `Input` signal interface.
-InputPort.prototype = new Input();
-InputPort.prototype.constructor = InputPort;
-
-// When port is started (which is when it's subgraph get's
-// first subscriber) actual observer is registered.
-InputPort.start = input => {
-  input.addListener(input);
-  // Also register add-on unload observer to end this signal
-  // when that happens.
-  addObserver(input, addonUnloadTopic, false);
-};
-InputPort.prototype[start] = InputPort.start;
-
-InputPort.addListener = input => addObserver(input, input.topic, false);
-InputPort.prototype.addListener = InputPort.addListener;
-
-// When port is stopped (which is when it's subgraph has no
-// no subcribers left) an actual observer unregistered.
-// Note that port stopped once it ends as well (which is when
-// add-on is unloaded).
-InputPort.stop = input => {
-  input.removeListener(input);
-  removeObserver(input, addonUnloadTopic);
-};
-InputPort.prototype[stop] = InputPort.stop;
-
-InputPort.removeListener = input => removeObserver(input, input.topic);
-InputPort.prototype.removeListener = InputPort.removeListener;
-
-// `InputPort` also implements `nsIObserver` interface and
-// `nsISupportsWeakReference` interfaces as it's going to be used as such.
-InputPort.prototype.QueryInterface = function(iid) {
-  if (!iid.equals(Ci.nsIObserver) && !iid.equals(Ci.nsISupportsWeakReference))
-    throw Cr.NS_ERROR_NO_INTERFACE;
-
-  return this;
-};
-
-// `InputPort` instances implement `observe` method, which is invoked when
-// observer notifications are dispatched. The `subject` of that notification
-// are received on this signal.
-InputPort.prototype.observe = function(subject, topic, data) {
-  // Unwrap message from the subject. SDK used to have it's own version of
-  // wrappedJSObjects which take precedence, if subject has `wrappedJSObject`
-  // and it's not an XrayWrapper use it as message. Otherwise use subject as
-  // is.
-  const message = subject === null ? null :
-        isLegacyWrapper(subject) ? unwrapLegacy(subject) :
-        isXrayWrapper(subject) ? subject :
-        subject.wrappedJSObject ? subject.wrappedJSObject :
-        subject;
-
-  // If observer topic matches topic of the input port receive a message.
-  if (topic === this.topic) {
-    receive(this, message);
-  }
-
-  // If observe topic is add-on unload topic we create an end message.
-  if (topic === addonUnloadTopic && message === unloadMessage) {
-    end(this);
-  }
-};
-
-exports.InputPort = InputPort;