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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';
module.metadata = {
'stability': 'unstable'
};
var { merge } = require('../util/object');
var { data } = require('../self');
var assetsURI = data.url();
var isArray = Array.isArray;
var method = require('../../method/core');
var { uuid } = require('../util/uuid');
const isAddonContent = ({ contentURL }) =>
contentURL && data.url(contentURL).startsWith(assetsURI);
exports.isAddonContent = isAddonContent;
function hasContentScript({ contentScript, contentScriptFile }) {
return (isArray(contentScript) ? contentScript.length > 0 :
!!contentScript) ||
(isArray(contentScriptFile) ? contentScriptFile.length > 0 :
!!contentScriptFile);
}
exports.hasContentScript = hasContentScript;
function requiresAddonGlobal(model) {
return model.injectInDocument || (isAddonContent(model) && !hasContentScript(model));
}
exports.requiresAddonGlobal = requiresAddonGlobal;
function getAttachEventType(model) {
if (!model) return null;
let when = model.contentScriptWhen;
return requiresAddonGlobal(model) ? 'document-element-inserted' :
when === 'start' ? 'document-element-inserted' :
when === 'ready' ? 'DOMContentLoaded' :
when === 'end' ? 'load' :
null;
}
exports.getAttachEventType = getAttachEventType;
var attach = method('worker-attach');
exports.attach = attach;
var connect = method('worker-connect');
exports.connect = connect;
var detach = method('worker-detach');
exports.detach = detach;
var destroy = method('worker-destroy');
exports.destroy = destroy;
function WorkerHost (workerFor) {
// Define worker properties that just proxy to underlying worker
return ['postMessage', 'port', 'url', 'tab'].reduce(function(proto, name) {
// Use descriptor properties instead so we can call
// the worker function in the context of the worker so we
// don't have to create new functions with `fn.bind(worker)`
let descriptorProp = {
value: function (...args) {
let worker = workerFor(this);
return worker[name].apply(worker, args);
}
};
let accessorProp = {
get: function () { return workerFor(this)[name]; },
set: function (value) { workerFor(this)[name] = value; }
};
Object.defineProperty(proto, name, merge({
enumerable: true,
configurable: false,
}, isDescriptor(name) ? descriptorProp : accessorProp));
return proto;
}, {});
function isDescriptor (prop) {
return ~['postMessage'].indexOf(prop);
}
}
exports.WorkerHost = WorkerHost;
function makeChildOptions(options) {
function makeStringArray(arrayOrValue) {
if (!arrayOrValue)
return [];
return [].concat(arrayOrValue).map(String);
}
return {
id: String(uuid()),
contentScript: makeStringArray(options.contentScript),
contentScriptFile: makeStringArray(options.contentScriptFile),
contentScriptOptions: options.contentScriptOptions ?
JSON.stringify(options.contentScriptOptions) :
null,
}
}
exports.makeChildOptions = makeChildOptions;
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