editor/AsyncSpellCheckTestHelper.jsm
author Mike Hommey <mh+mozilla@glandium.org>
Wed, 01 Jun 2016 07:22:49 +0900
changeset 340685 1d2c46c8c7c764daf8638663524033dfe330cf0a
parent 145664 eac7a8c8d5d42d0ca047102422e13a9bb4fec50e
child 378071 25c0a38d2d7ed50ed3c1d419f70c01595c481ae7
permissions -rw-r--r--
Bug 1244446 - Run automation build steps before postflight_all. r=gps,r=ted Killing the sccache background daemon is part of postflight_all, but in the current setup, postflight_all happens at the end of a "normal" build, but we run automation build steps after that. What happens then is that more compilations happen (gtests), which start sccache again, but there's nothing to kill sccache again once this is all done. Now that the OSX universal builds postflight is gone, it is not necessary for postflight_all to happen before the automation build steps. So ensure postflight_all scripts happen last. The downside of this change is that this now prevents sccache.log from being uploaded, but we should probably send processed data to the graph server instead.

/* 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/. */

this.EXPORTED_SYMBOLS = [
  "onSpellCheck",
];

const SPELL_CHECK_ENDED_TOPIC = "inlineSpellChecker-spellCheck-ended";
const SPELL_CHECK_STARTED_TOPIC = "inlineSpellChecker-spellCheck-started";

const { classes: Cc, interfaces: Ci, utils: Cu } = Components;

/**
 * Waits until spell checking has stopped on the given element.
 *
 * When a spell check is pending, this waits indefinitely until the spell check
 * ends.  When a spell check is not pending, it waits a small number of turns of
 * the event loop: if a spell check begins, it resumes waiting indefinitely for
 * the end, and otherwise it stops waiting and calls the callback.
 *
 * This this can therefore trap spell checks that have not started at the time
 * of calling, spell checks that have already started, multiple consecutive
 * spell checks, and the absence of spell checks altogether.
 *
 * @param editableElement  The element being spell checked.
 * @param callback         Called when spell check has completed or enough turns
 *                         of the event loop have passed to determine it has not
 *                         started.
 */
function onSpellCheck(editableElement, callback) {
  let editor = editableElement.editor;
  if (!editor) {
    let win = editableElement.ownerDocument.defaultView;
    editor = win.QueryInterface(Ci.nsIInterfaceRequestor).
                 getInterface(Ci.nsIWebNavigation).
                 QueryInterface(Ci.nsIInterfaceRequestor).
                 getInterface(Ci.nsIEditingSession).
                 getEditorForWindow(win);
  }
  if (!editor)
    throw new Error("Unable to find editor for element " + editableElement);

  try {
    // False is important here.  Pass false so that the inline spell checker
    // isn't created if it doesn't already exist.
    var isc = editor.getInlineSpellChecker(false);
  }
  catch (err) {
    // getInlineSpellChecker throws if spell checking is not enabled instead of
    // just returning null, which seems kind of lame.  (Spell checking is not
    // enabled on Android.)  The point here is only to determine whether spell
    // check is pending, and if getInlineSpellChecker throws, then it's not
    // pending.
  }
  let waitingForEnded = isc && isc.spellCheckPending;
  let count = 0;

  function observe(subj, topic, data) {
    if (subj != editor)
      return;
    count = 0;
    let expectedTopic = waitingForEnded ? SPELL_CHECK_ENDED_TOPIC :
                        SPELL_CHECK_STARTED_TOPIC;
    if (topic != expectedTopic)
      Cu.reportError("Expected " + expectedTopic + " but got " + topic + "!");
    waitingForEnded = !waitingForEnded;
  }

  let os = Cc["@mozilla.org/observer-service;1"].
           getService(Ci.nsIObserverService);
  os.addObserver(observe, SPELL_CHECK_STARTED_TOPIC, false);
  os.addObserver(observe, SPELL_CHECK_ENDED_TOPIC, false);

  let timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
  timer.init(function tick() {
    // Wait an arbitrarily large number -- 50 -- turns of the event loop before
    // declaring that no spell checks will start.
    if (waitingForEnded || ++count < 50)
      return;
    timer.cancel();
    os.removeObserver(observe, SPELL_CHECK_STARTED_TOPIC);
    os.removeObserver(observe, SPELL_CHECK_ENDED_TOPIC);
    callback();
  }, 0, Ci.nsITimer.TYPE_REPEATING_SLACK);
};