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-rw-r--r--browser/components/pagedata/PageDataParent.sys.mjs57
1 files changed, 57 insertions, 0 deletions
diff --git a/browser/components/pagedata/PageDataParent.sys.mjs b/browser/components/pagedata/PageDataParent.sys.mjs
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+++ b/browser/components/pagedata/PageDataParent.sys.mjs
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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",
+ 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;
+ }
+ }
+}