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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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
PageDataService: "resource:///modules/pagedata/PageDataService.sys.mjs",
});
/**
* Receives messages from PageDataChild and passes them to the PageData service.
*/
export class PageDataParent extends JSWindowActorParent {
#deferredCollection = null;
/**
* Starts data collection in the child process. Returns a promise that
* resolves to the page data or null if the page is closed before data
* collection completes.
*
* @returns {Promise<PageData|null>}
*/
collectPageData() {
if (!this.#deferredCollection) {
this.#deferredCollection = Promise.withResolvers();
this.sendQuery("PageData:Collect").then(
this.#deferredCollection.resolve,
this.#deferredCollection.reject
);
}
return this.#deferredCollection.promise;
}
/**
* Called when the page is destroyed.
*/
didDestroy() {
this.#deferredCollection?.resolve(null);
}
/**
* Called when a message is received from the content process.
*
* @param {ReceiveMessageArgument} msg
* The received message.
*/
receiveMessage(msg) {
switch (msg.name) {
case "PageData:DocumentReady":
lazy.PageDataService.pageLoaded(this, msg.data.url);
break;
}
}
}
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