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-rw-r--r--docshell/test/chrome/DocShellHelpers.sys.mjs74
1 files changed, 74 insertions, 0 deletions
diff --git a/docshell/test/chrome/DocShellHelpers.sys.mjs b/docshell/test/chrome/DocShellHelpers.sys.mjs
new file mode 100644
index 0000000000..5f4eee8724
--- /dev/null
+++ b/docshell/test/chrome/DocShellHelpers.sys.mjs
@@ -0,0 +1,74 @@
+/* Any copyright is dedicated to the Public Domain.
+http://creativecommons.org/publicdomain/zero/1.0/ */
+
+export class DocShellHelpersParent extends JSWindowActorParent {
+ static eventListener;
+
+ // These static variables should be set when registering the actor
+ // (currently doPageNavigation in docshell_helpers.js).
+ static eventsToListenFor;
+ static observers;
+
+ constructor() {
+ super();
+ }
+ receiveMessage({ name, data }) {
+ if (name == "docshell_helpers:event") {
+ let { event, originalTargetIsHTMLDocument } = data;
+
+ if (this.constructor.eventsToListenFor.includes(event.type)) {
+ this.constructor.eventListener(event, originalTargetIsHTMLDocument);
+ }
+ } else if (name == "docshell_helpers:observe") {
+ let { topic } = data;
+
+ this.constructor.observers.get(topic).call();
+ }
+ }
+}
+
+export class DocShellHelpersChild extends JSWindowActorChild {
+ constructor() {
+ super();
+ }
+ receiveMessage({ name, data }) {
+ if (name == "docshell_helpers:preventBFCache") {
+ // Add an RTCPeerConnection to prevent the page from being bfcached.
+ let win = this.contentWindow;
+ win.blockBFCache = new win.RTCPeerConnection();
+ }
+ }
+ handleEvent(event) {
+ if (
+ Document.isInstance(event.originalTarget) &&
+ event.originalTarget.isInitialDocument
+ ) {
+ dump(`TEST: ignoring a ${event.type} event for an initial about:blank\n`);
+ return;
+ }
+
+ this.sendAsyncMessage("docshell_helpers:event", {
+ event: {
+ type: event.type,
+ persisted: event.persisted,
+ originalTarget: {
+ title: event.originalTarget.title,
+ location: event.originalTarget.location.href,
+ visibilityState: event.originalTarget.visibilityState,
+ hidden: event.originalTarget.hidden,
+ },
+ },
+ originalTargetIsHTMLDocument: HTMLDocument.isInstance(
+ event.originalTarget
+ ),
+ });
+ }
+ observe(subject, topic) {
+ if (Window.isInstance(subject) && subject.document.isInitialDocument) {
+ dump(`TEST: ignoring a topic notification for an initial about:blank\n`);
+ return;
+ }
+
+ this.sendAsyncMessage("docshell_helpers:observe", { topic });
+ }
+}