Add Pdf, Doc, Ppt Tabs to Google search

Adds PDF, DOC, and PPT tabs to Google search results
当前为 2025-06-30 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      1.4
// @description  Adds PDF, DOC, and PPT tabs to Google search results
// @author       Bui Quoc Dung
// @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)' },
  ];

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

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

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

    const existingLabels = new Set(tabItems.map(t => t.textContent.trim()));
    const baseTab = tabItems[0];

    fileTabs.forEach(({ label, query: extra }) => {
      if (existingLabels.has(label)) return;

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

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

      const url = `/search?q=${encodeURIComponent(`${currentQuery} ${extra}`)}`;

      a.href = url;
      textElement.textContent = label;

      newItem.removeAttribute('aria-selected');
      a.removeAttribute('aria-selected');

      tabContainer.appendChild(newItem);
    });
  }

  addFileTabs();

  new MutationObserver(addFileTabs).observe(document.body, { childList: true, subtree: true });
})();