gecko/toolkit/devtools/gcli/commands/inject.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 { Services } = require("resource://gre/modules/Services.jsm");
const { listenOnce } = require("devtools/async-utils");
const gcli = require("gcli/index");

exports.items = [
  {
    name: "inject",
    description: gcli.lookup("injectDesc"),
    manual: gcli.lookup("injectManual"),
    params: [{
      name: 'library',
      type: {
        name: "union",
        types: [
          {
            name: "selection",
            lookup: [
              {
                name: "jQuery",
                value: {
                  name: "jQuery",
                  src: Services.prefs.getCharPref("devtools.gcli.jquerySrc")
                }
              },
              {
                name: "lodash",
                value: {
                  name: "lodash",
                  src: Services.prefs.getCharPref("devtools.gcli.lodashSrc")
                }
              },
              {
                name: "underscore",
                value: {
                  name: "underscore",
                  src: Services.prefs.getCharPref("devtools.gcli.underscoreSrc")
                }
              }
            ]
          },
          {
            name: "string"
          }
        ]
      },
      description: gcli.lookup("injectLibraryDesc")
    }],
    exec: function*(args, context) {
      let document = context.environment.document;
      let library = args.library;
      let name = (library.type === "selection") ?
          library.selection.name : library.string;
      let src = (library.type === "selection") ?
          library.selection.src : library.string;

      try {
        // Check if URI is valid
        Services.io.newURI(src, null, null);
      } catch(e) {
        return gcli.lookupFormat("injectFailed", [name]);
      }

      let newSource = document.createElement("script");
      newSource.setAttribute("src", src);

      let loadPromise = listenOnce(newSource, "load");
      document.head.appendChild(newSource);

      yield loadPromise;

      return gcli.lookupFormat("injectLoaded", [name]);
    }
  }
];