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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/. */
/**
* The FormHandlerChild is the place to implement logic that is shared
* by child actors like FormAutofillChild, LoginManagerChild and FormHistoryChild
* or in general components that deal with form data.
*/
export const FORM_SUBMISSION_REASON = {
FORM_SUBMIT_EVENT: "form-submit-event",
FORM_REMOVAL_AFTER_FETCH: "form-removal-after-fetch",
IFRAME_PAGEHIDE: "iframe-pagehide",
PAGE_NAVIGATION: "page-navigation",
};
export class FormHandlerChild extends JSWindowActorChild {
handleEvent(event) {
if (!event.isTrusted) {
return;
}
switch (event.type) {
case "DOMFormBeforeSubmit":
this.processDOMFormBeforeSubmitEvent(event);
break;
default:
throw new Error("Unexpected event type");
}
}
/**
* Process the DOMFormBeforeSubmitEvent that is dispatched
* after a form submit event. Extract event data
* that is relevant to the form submission listeners
*
* @param {Event} event DOMFormBeforeSubmit
*/
processDOMFormBeforeSubmitEvent(event) {
const form = event.target;
const formSubmissionReason = FORM_SUBMISSION_REASON.FORM_SUBMIT_EVENT;
this.#dispatchFormSubmissionEvent(form, formSubmissionReason);
}
// handle form-removal-after-fetch
processFormRemovalAfterFetch(params) {}
// handle iframe-pagehide
processIframePagehide(params) {}
// handle page-navigation
processPageNavigation(params) {}
/**
* Dispatch the CustomEvent form-submission-detected also transfer
* the information:
* detail.form - the form that is being submitted
* detail.reason - the heuristic that detected the form submission
* (see FORM_SUBMISSION_REASON)
*
* @param {HTMLFormElement} form
* @param {string} reason
*/
#dispatchFormSubmissionEvent(form, reason) {
const formSubmissionEvent = new CustomEvent("form-submission-detected", {
detail: { form, reason },
bubbles: true,
});
this.document.dispatchEvent(formSubmissionEvent);
}
}
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