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/* 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
"use strict";
const {
TYPES: { CSS_CHANGE },
const TrackChangeEmitter = require("resource://devtools/server/actors/utils/track-change-emitter.js");
/**
* Start watching for all css changes related to a given Target Actor.
*
* @param TargetActor targetActor
* The target actor from which we should observe css changes.
* @param Object options
* Dictionary object with following attributes:
* - onAvailable: mandatory function
* This will be called for each resource.
*/
class CSSChangeWatcher {
constructor() {
this.onTrackChange = this.onTrackChange.bind(this);
}
async watch(targetActor, { onAvailable }) {
this.onAvailable = onAvailable;
TrackChangeEmitter.on("track-change", this.onTrackChange);
}
onTrackChange(change) {
change.resourceType = CSS_CHANGE;
this.onAvailable([change]);
}
destroy() {
TrackChangeEmitter.off("track-change", this.onTrackChange);
}
}
module.exports = CSSChangeWatcher;