Add Pdf, Doc, Ppt Tabs to Google search

Adds PDF, DOC, and PPT tabs to Google search results
当前为 2025-07-01 提交的版本，查看最新版本。
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// ==UserScript==
// @name         Add Pdf, Doc, Ppt Tabs to Google search
// @namespace    http://tampermonkey.net/
// @version      1.5
// @description  Adds PDF, DOC, and PPT tabs to Google search results
// @author       Bui Quoc Dung (Fixed by Gemini)
// @match        *://www.google.com/search*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const fileTabs = [
        { label: 'Pdf', query: 'filetype:pdf' },
        { label: 'Doc', query: '(filetype:doc OR filetype:docx)' },
        { label: 'Ppt', query: '(filetype:ppt OR filetype:pptx)' },
    ];

    const filetypeRegex = /\s*(\(filetype:(doc|docx|ppt|pptx)\s*(OR\s*filetype:(doc|docx|ppt|pptx))*\)|filetype:(pdf|doc|docx|ppt|pptx))/gi;

    function executeModification() {
        const tabContainer = document.querySelector('div[role="list"]');
        if (!tabContainer) return;

        tabContainer.querySelectorAll('.custom-file-tab').forEach(e => e.remove());

        const tabItems = [...tabContainer.querySelectorAll('div[role="listitem"]')];
        if (tabItems.length === 0) return;

        const currentQuery = new URLSearchParams(window.location.search).get('q') || '';
        if (!currentQuery) return;

        const baseQuery = currentQuery.replace(filetypeRegex, '').trim();
        if (!baseQuery) return;

        const baseTabToClone = tabItems[2] || tabItems[0];
        if (!baseTabToClone) return;

        fileTabs.forEach(({ label, query: filetypeQuery }) => {
            const newItem = baseTabToClone.cloneNode(true);
            newItem.classList.add('custom-file-tab');

            const a = newItem.querySelector('a');
            if (!a) return;

            const textElement = a.querySelector('div > span') || a.querySelector('div');
            if (!textElement) return;

            const newSearchQuery = `${baseQuery} ${filetypeQuery}`;
            a.href = `/search?q=${encodeURIComponent(newSearchQuery)}`;
            textElement.textContent = label;

            const isSelected = new RegExp(filetypeQuery.replace(/[()]/g, '\\$&'), 'i').test(currentQuery);
            newItem.setAttribute('aria-selected', isSelected.toString());

            a.style.color = '';
            newItem.style.borderBottom = '';
            const innerDiv = a.querySelector('div');
            if (innerDiv) {
                innerDiv.style.borderBottom = '';
            }

            tabContainer.appendChild(newItem);
        });
    }

    const observer = new MutationObserver(() => {
        observer.disconnect();

        executeModification();

        observer.observe(document.body, {
            childList: true,
            subtree: true
        });
    });

    observer.observe(document.body, {
        childList: true,
        subtree: true
    });

    setTimeout(executeModification, 500);
})();
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