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Authored by Daimona on Mar 12 2025, 3:34 PM.

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	F58808896: raw-paste-data.txt
	Mar 12 2025, 5:27 PM

	F58808357: raw-paste-data.txt
	Mar 12 2025, 3:34 PM

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	// ==UserScript==
	// @name Prevent phab content loss for new tasks
	// @version 0.1.1
	// @description See https://we.phorge.it/T15202
	// @author Someone who just lost content, ofc
	// @match https://phabricator.wikimedia.org/maniphest/task/edit/*
	// @match https://phabricator.wmcloud.org/maniphest/task/edit/*
	// @grant none
	// ==/UserScript==

	(function() {
	'use strict';

	const mainForm = document.querySelector( '.phui-box form' );

	function getFormState() {
	return new URLSearchParams( new FormData( mainForm ) ).toString();
	}

	const initialState = getFormState();

	/** Adapted from https://we.phorge.it/T15202 */
	function onBeforeUnload( e ) {
	if ( getFormState() !== initialState ) {
	// For security reasons, only a generic string not under the control
	// of the webpage is shown instead of this returned string
	// so you can put here whatever you want
	// https://developer.mozilla.org/en-US/docs/Web/API/BeforeUnloadEvent
	var confirmationMessage = "Melanzane ripiene";

	// Gecko + IE
	(e \|\| window.event).returnValue = confirmationMessage;

	// Safari, Chrome, and other WebKit-derived browsers
	return confirmationMessage;
	}
	}
	window.addEventListener( 'beforeunload', onBeforeUnload );

	mainForm.addEventListener(
	'submit',
	() => window.removeEventListener( 'beforeunload', onBeforeUnload )
	);
	})();

Event Timeline

Daimona created this paste.Mar 12 2025, 3:34 PM

Daimona mentioned this in T86463: Some form content (Search; Create new task) not fully preserved after "Back" button.Mar 12 2025, 3:44 PM

Daimona edited the content of this paste. (Show Details)Mar 12 2025, 5:27 PM

To use this script, you need a Userscript manager like Greasemonkey or tampermonkey. Once you have installed that, follow its instructions for creating a new script and paste the code above.

The script is loaded when creating or editing a task, and it will display a confirmation popup if you try to close the browser tab/window with unsaved changes.

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