shipstation-scan-input-focus-tampermonkey.js

// ==UserScript==
// @name         ShipStation Allow Manual Focus Only
// @namespace    http://tampermonkey.net/
// @version      1.3
// @description  Only allow scan input to be focused by mouse click
// @match        https://*.shipstation.com/*
// @grant        none
// ==/UserScript==

(function () {
    'use strict';

    const SCAN_INPUT_ID = 'scan-search-box';
    let allowFocus = false;

    function preventAutoFocus(input) {
        // Block programmatic or keyboard focus
        input.addEventListener('focus', (e) => {
            if (!allowFocus) {
                input.blur();
                e.preventDefault();
                e.stopPropagation();
            }
        });

        // Detect manual clicks to allow focus temporarily
        input.addEventListener('mousedown', () => {
            allowFocus = true;
        });

        // Once they leave the field, reset
        input.addEventListener('blur', () => {
            allowFocus = false;
        });
    }

    function waitForInputAndApply() {
        const input = document.getElementById(SCAN_INPUT_ID);
        if (input) {
            preventAutoFocus(input);
            return true;
        }
        return false;
    }

    // ShipStation is an SPA, so poll until the input appears
    const interval = setInterval(() => {
        if (waitForInputAndApply()) {
            clearInterval(interval);
        }
    }, 300);
})();