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Diffstat (limited to '')
-rw-r--r-- | browser/components/migration/MigrationWizardChild.sys.mjs | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/browser/components/migration/MigrationWizardChild.sys.mjs b/browser/components/migration/MigrationWizardChild.sys.mjs new file mode 100644 index 0000000000..4a7db8f043 --- /dev/null +++ b/browser/components/migration/MigrationWizardChild.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/. */ + +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 + ) + ); + } +} |