diff options
Diffstat (limited to 'browser/components/pagedata/PageDataParent.sys.mjs')
-rw-r--r-- | browser/components/pagedata/PageDataParent.sys.mjs | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/browser/components/pagedata/PageDataParent.sys.mjs b/browser/components/pagedata/PageDataParent.sys.mjs new file mode 100644 index 0000000000..c3e7743b99 --- /dev/null +++ b/browser/components/pagedata/PageDataParent.sys.mjs @@ -0,0 +1,57 @@ +/* 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", + PromiseUtils: "resource://gre/modules/PromiseUtils.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 = lazy.PromiseUtils.defer(); + 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; + } + } +} |