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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/. */
import { MigrationWizardConstants } from "chrome://browser/content/migration/migration-wizard-constants.mjs";
/**
* This class is responsible for updating the state of a <migration-wizard>
* component, and for listening for events from that component to perform
* various migration functions.
*/
export class MigrationWizardChild extends JSWindowActorChild {
#wizardEl = null;
/**
* General event handler function for events dispatched from the
* <migration-wizard> component.
*
* @param {Event} event
* The DOM event being handled.
* @returns {Promise}
*/
async handleEvent(event) {
if (event.type == "MigrationWizard:Init") {
this.#wizardEl = event.target;
let migrators = await this.sendQuery("GetAvailableMigrators");
this.setComponentState({
migrators,
page: MigrationWizardConstants.PAGES.SELECTION,
});
}
}
/**
* Calls the `setState` method on the <migration-wizard> component. The
* state is cloned into the execution scope of this.#wizardEl.
*
* @param {object} state The state object that a <migration-wizard>
* component expects. See the documentation for the element's setState
* method for more details.
*/
setComponentState(state) {
if (!this.#wizardEl) {
return;
}
// We waive XrayWrappers in the event that the element is embedded in
// a document without system privileges, like about:welcome.
Cu.waiveXrays(this.#wizardEl).setState(
Cu.cloneInto(
state,
// ownerGlobal doesn't exist in content windows.
// eslint-disable-next-line mozilla/use-ownerGlobal
this.#wizardEl.ownerDocument.defaultView
)
);
}
}
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