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Move Add-on SDK source to toolkit/jetpack

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NTD 2018-02-09 06:46:43 -05:00 • committed by Roy Tam
commit 23b67db438
993 changed files with 484 additions and 100663 deletions
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39
addon-sdk/source/lib/sdk/remote/utils.js
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/* 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 { Class } = require('../core/heritage');
const { List, addListItem, removeListItem } = require('../util/list');
const { emit } = require('../event/core');
const { pipe } = require('../event/utils');
// A helper class that maintains a list of EventTargets. Any events emitted
// to an EventTarget are also emitted by the EventParent. Likewise for an
// EventTarget's port property.
const EventParent = Class({
implements: [ List ],
attachItem: function(item) {
addListItem(this, item);
pipe(item.port, this.port);
pipe(item, this);
item.once('detach', () => {
removeListItem(this, item);
})
emit(this, 'attach', item);
},
// Calls listener for every object already in the list and every object
// subsequently added to the list.
forEvery: function(listener) {
for (let item of this)
listener(item);
this.on('attach', listener);
}
});
exports.EventParent = EventParent;