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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
import { GeckoViewUtils } from "resource://gre/modules/GeckoViewUtils.sys.mjs";
import { GeckoViewActorParent } from "resource://gre/modules/GeckoViewActorParent.sys.mjs";
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
SessionHistory: "resource://gre/modules/sessionstore/SessionHistory.sys.mjs",
SessionStoreHelper:
"resource://gre/modules/sessionstore/SessionStoreHelper.sys.mjs",
});
const { debug, warn } = GeckoViewUtils.initLogging("GeckoViewContentParent");
export class GeckoViewContentParent extends GeckoViewActorParent {
async collectState() {
return this.sendQuery("CollectSessionState");
}
async containsFormData() {
return this.sendQuery("ContainsFormData");
}
restoreState({ history, switchId, formdata, scrolldata }) {
if (Services.appinfo.sessionHistoryInParent) {
const { browsingContext } = this.browser;
lazy.SessionHistory.restoreFromParent(
browsingContext.sessionHistory,
history
);
return SessionStoreUtils.initializeRestore(
browsingContext,
lazy.SessionStoreHelper.buildRestoreData(formdata, scrolldata)
);
}
// Restoring is made of two parts. First we need to restore the history
// of the tab and navigating to the current page, after the page
// navigates to the current page we need to restore the state of the
// page (scroll position, form data, etc).
//
// We can't do everything in one step inside the child actor because
// the actor is recreated when navigating, so we need to keep the state
// on the parent side until we navigate.
this.sendAsyncMessage("RestoreHistoryAndNavigate", {
history,
switchId,
});
if (!formdata && !scrolldata) {
return null;
}
const progressFilter = Cc[
"@mozilla.org/appshell/component/browser-status-filter;1"
].createInstance(Ci.nsIWebProgress);
const { browser } = this;
const progressListener = {
QueryInterface: ChromeUtils.generateQI(["nsIWebProgressListener"]),
onLocationChange(aWebProgress) {
if (!aWebProgress.isTopLevel) {
return;
}
// The actor might get recreated between navigations so we need to
// query it again for the up-to-date instance.
browser.browsingContext.currentWindowGlobal
.getActor("GeckoViewContent")
.sendAsyncMessage("RestoreSessionState", { formdata, scrolldata });
progressFilter.removeProgressListener(this);
browser.removeProgressListener(progressFilter);
},
};
const flags = Ci.nsIWebProgress.NOTIFY_LOCATION;
progressFilter.addProgressListener(progressListener, flags);
browser.addProgressListener(progressFilter, flags);
return null;
}
}