gecko-dev/devtools/shared/fronts/actor-registry.js

/* 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 { components } = require("chrome");
const Services = require("Services");
const { actorActorSpec, actorRegistrySpec } = require("devtools/shared/specs/actor-registry");
const { FrontClassWithSpec, registerFront } = require("devtools/shared/protocol");

loader.lazyImporter(this, "NetUtil", "resource://gre/modules/NetUtil.jsm");

class ActorActorFront extends FrontClassWithSpec(actorActorSpec) {
}

exports.ActorActorFront = ActorActorFront;
registerFront(ActorActorFront);

function request(uri) {
  return new Promise((resolve, reject) => {
    try {
      uri = Services.io.newURI(uri);
    } catch (e) {
      reject(e);
    }

    NetUtil.asyncFetch({
      uri,
      loadUsingSystemPrincipal: true,
    }, (stream, status, req) => {
      if (!components.isSuccessCode(status)) {
        reject(new Error("Request failed with status code = "
                         + status
                         + " after NetUtil.asyncFetch for url = "
                         + uri));
        return;
      }

      const source = NetUtil.readInputStreamToString(stream, stream.available());
      stream.close();
      resolve(source);
    });
  });
}

class ActorRegistryFront extends FrontClassWithSpec(actorRegistrySpec) {
  constructor(client) {
    super(client);

    // Attribute name from which to retrieve the actorID out of the target actor's form
    this.formAttributeName = "actorRegistryActor";
  }

  registerActor(uri, options) {
    return request(uri, options)
      .then(sourceText => {
        return super.registerActor(sourceText, uri, options);
      });
  }
}

exports.ActorRegistryFront = ActorRegistryFront;
registerFront(ActorRegistryFront);