share.user.js

share.user.js

// ==UserScript==
// @name         Auto share on selection end (no double-trigger)
// @namespace    wblock
// @version      1.1.6
// @match        https://*/*
// @run-at       document-end
// ==/UserScript==

(() => {
  "use strict";

  const WHITELIST = [
    "https://ankiuser.net/study",
    "https://jp.inoreader.com/folder/Nippon"
  ];
  if (!WHITELIST.some(p => location.href.startsWith(p))) return;

  const getText = () => (window.getSelection?.().toString() || "").trim();

  let lastSharedText = "";

  // When selection is cleared, allow sharing again
  document.addEventListener("selectionchange", () => {
    if (!getText()) lastSharedText = "";
  }, { passive: true });

  async function tryShare() {
    const text = getText();
    if (!text) return;
    if (!navigator.share) return;

    // Prevent re-trigger when user taps elsewhere to unselect
    if (text === lastSharedText) return;

    lastSharedText = text;
    try {
      await navigator.share({ text, title: text });
    } catch (_) {}
  }

  document.addEventListener("touchend", tryShare, { passive: true });
  document.addEventListener("mouseup", tryShare, { passive: true });
})();