diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /devtools/server/actors/resources/reflow.js | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'devtools/server/actors/resources/reflow.js')
-rw-r--r-- | devtools/server/actors/resources/reflow.js | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/devtools/server/actors/resources/reflow.js b/devtools/server/actors/resources/reflow.js new file mode 100644 index 0000000000..5be9d6e7b2 --- /dev/null +++ b/devtools/server/actors/resources/reflow.js @@ -0,0 +1,63 @@ +/* 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 { + TYPES: { REFLOW }, +} = require("resource://devtools/server/actors/resources/index.js"); +const Targets = require("resource://devtools/server/actors/targets/index.js"); + +const { + getLayoutChangesObserver, + releaseLayoutChangesObserver, +} = require("resource://devtools/server/actors/reflow.js"); + +class ReflowWatcher { + /** + * Start watching for reflows related to a given Target Actor. + * + * @param TargetActor targetActor + * The target actor from which we should observe reflows + * @param Object options + * Dictionary object with following attributes: + * - onAvailable: mandatory function + * This will be called for each resource. + */ + async watch(targetActor, { onAvailable }) { + // Only track reflow for non-ParentProcess FRAME targets + if ( + targetActor.targetType !== Targets.TYPES.FRAME || + targetActor.typeName === "parentProcessTarget" + ) { + return; + } + + this._targetActor = targetActor; + + const onReflows = reflows => { + onAvailable([ + { + resourceType: REFLOW, + reflows, + }, + ]); + }; + + this._observer = getLayoutChangesObserver(targetActor); + this._offReflows = this._observer.on("reflows", onReflows); + this._observer.start(); + } + + destroy() { + releaseLayoutChangesObserver(this._targetActor); + + if (this._offReflows) { + this._offReflows(); + this._offReflows = null; + } + } +} + +module.exports = ReflowWatcher; |