js/xpconnect/tests/idl/xpctest_returncode.idl
author Morris Tseng <mtseng@mozilla.com>
Mon, 12 Sep 2016 17:39:54 +0800
changeset 313517 d85736dec5d0d1c605d471b53decef714b3b4074
parent 218795 6d97109e0c306f9194d236eac82a6d7e8f572416
permissions -rw-r--r--
Bug 1297965 - Use ANGLE for WebGL2. r=jgilbert MozReview-Commit-ID: 83zhQ5rTdbi

/* -*- Mode: C; tab-width: 8; 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/. */

/**
 * Test the use of Components.returnCode
 *
 * This ("parent") interface defines a method that in-turn calls another
 * ("child") interface implemented in JS, and returns the nsresult from that
 * child interface.  The child interface manages the return code by way of
 * Components.returnCode.
 */

#include "nsISupports.idl"


[scriptable, uuid(479e4532-95cf-48b8-a99b-8a5881e47138)]
interface nsIXPCTestReturnCodeParent : nsISupports {
  // Calls the "child" interface with the specified behavior flag.  Returns
  // the NSRESULT from the child interface.
  nsresult        callChild(in long childBehavior);
};

[scriptable, uuid(672cfd34-1fd1-455d-9901-d879fa6fdb95)]
interface nsIXPCTestReturnCodeChild : nsISupports {
  void doIt(in long behavior);

  // Flags to control that the child does.
  // child will throw a JS exception
  const long CHILD_SHOULD_THROW = 0;

  // child will just return normally
  const long CHILD_SHOULD_RETURN_SUCCESS = 1;

  // child will return after setting Components.returnCode to NS_ERROR_FAILURE
  const long CHILD_SHOULD_RETURN_RESULTCODE = 2;

  // child will set Components.returnCode to NS_ERROR_UNEXPECTED, then create
  // a new component that sets Components.returnCode to NS_ERROR_FAILURE.
  // Our caller should see the NS_ERROR_UNEXPECTED we set rather than the
  // value set later by the "inner" child.
  const long CHILD_SHOULD_NEST_RESULTCODES = 3;
};