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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * 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/. */

#include "nsISupports.idl"

interface nsIURI;
interface nsIPrincipal;
interface nsIObserver;

[scriptable, builtinclass, uuid(19533e7b-f321-4ef1-bc59-6e812dc2a733)]
interface mozIJSSubScriptLoader : nsISupports
{
    /**
     * This method should only be called from JS!
     * In JS, the signature looks like:
     * rv loadSubScript (url [, obj] [, charset]);
     * @param url the url of the UTF-8-encoded sub-script, it MUST be either a
     *            file:, resource:, blob:, or chrome: url, and MUST be local.
     * @param obj an optional object to evaluate the script onto, it
     *            defaults to the global object of the caller.
     * @retval rv the value returned by the sub-script
     */
    [implicit_jscontext]
    jsval loadSubScript(in AString url, [optional] in jsval obj);

    /**
     * This method should only be called from JS!
     * In JS, the signature looks like:
     * rv = loadSubScript (url, optionsObject)
     * @param url the url of the UTF-8-encoded sub-script, which MUST be either
     *            a file:, resource:, blob:, or chrome: url, and MUST be local.
     * @param optionsObject an object with parameters. Valid parameters are:
     *                      - target:  an object to evaluate onto (default: global object of the caller)
     *                      - ignoreCache: if set to true, will bypass the cache for reading the file.
     *                      - async: if set to true, the script will be loaded
     *                        asynchronously, and a Promise is returned which
     *                        resolves to its result when execution is complete.
     *                      - wantReturnValue: If true, the script will return
     *                        the value of the last statement that it evaluated.
     *                        This option disables most optimizations in the
     *                        top-level scope, and should be avoided if at all
     *                        possible. Defaults to false.
     * @retval rv the value returned by the sub-script
     */
    [implicit_jscontext]
    jsval loadSubScriptWithOptions(in AString url, in jsval options);
};