Morfologja.lt Tools

a utility script that adds arrow-key navigation to suggestions, auto-formatting, and error redirects.
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// ==UserScript==
// @name        Morfologja.lt Tools
// @namespace   Violentmonkey Scripts
// @icon        data:image/x-icon;base64,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
// @version     1.0
//
// @match       https://morfologija.lietuviuzodynas.lt/*
// @grant       none
// @license MIT
// @author      yll
// @description a utility script that adds arrow-key navigation to suggestions, auto-formatting, and error redirects.
//
//
// ==/UserScript==

(function() {
    'use strict';

    const searchInput = document.querySelector('input[name="zodis"]') || document.querySelector('input[type="text"]');
    const suggestionsDiv = document.getElementById('suggestion');

    const isEmptyPage = document.querySelector('.gramemas') && document.querySelector('.gramemas').innerHTML.trim() === "";
    const is404Page = window.location.pathname === '/search';

    if (is404Page || isEmptyPage) {
        sessionStorage.setItem('searchFailed', 'true');
        if (document.referrer && document.referrer !== window.location.href) {
            window.location.href = document.referrer;
        } else {
            window.location.href = "https://morfologija.lietuviuzodynas.lt/";
        }
        return;
    }

    if (searchInput) {
        const defaultPlaceholder = searchInput.placeholder || "Ieškoti...";
        let activeIndex = -1;
        let lastCount = 0;

        searchInput.focus();

        if (sessionStorage.getItem('searchFailed') === 'true') {
            searchInput.value = "";
            searchInput.placeholder = "⚠️ Žodis nerastas - bandykite dar kartą...";
            sessionStorage.removeItem('searchFailed');
        }

        const formatAndClean = () => {
            searchInput.value = searchInput.value.toLowerCase().trimEnd();
        };

        const form = searchInput.closest('form');
        if (form) {
            form.addEventListener('submit', formatAndClean);
        }

        const updateSelection = () => {
            const links = suggestionsDiv ? suggestionsDiv.querySelectorAll('a') : [];
            links.forEach((link, index) => {
                if (index === activeIndex) {
                    link.style.backgroundColor = '#4779c4';
                    link.style.color = '#ffffff';
                    link.style.fontWeight = 'bold';
                    link.style.display = 'block';
                    link.scrollIntoView({ block: 'nearest' });
                } else {
                    link.style.backgroundColor = '';
                    link.style.color = '';
                    link.style.fontWeight = 'normal';
                    link.style.display = 'block';
                }
            });
        };

        searchInput.addEventListener('keydown', (e) => {
            const links = suggestionsDiv ? suggestionsDiv.querySelectorAll('a') : [];
            if (links.length === 0) return;

            if (e.key === 'ArrowDown') {
                e.preventDefault();
                activeIndex = (activeIndex + 1) % links.length;
                updateSelection();
            } else if (e.key === 'ArrowUp') {
                e.preventDefault();
                activeIndex = (activeIndex - 1 + links.length) % links.length;
                updateSelection();
            } else if (e.key === 'Enter' && activeIndex > -1) {
                e.preventDefault();
                links[activeIndex].click();
            }
        });

        if (suggestionsDiv) {
            const observer = new MutationObserver(() => {
                const links = suggestionsDiv.querySelectorAll('a');
                if (links.length !== lastCount) {
                    activeIndex = -1;
                    lastCount = links.length;
                } else if (activeIndex !== -1) {
                    updateSelection();
                }
            });
            observer.observe(suggestionsDiv, { childList: true, subtree: true });
        }

        searchInput.addEventListener('input', () => {
            if (searchInput.placeholder !== defaultPlaceholder) {
                searchInput.placeholder = defaultPlaceholder;
            }
        });
    }
})();