Easy Text Selection Copier

Adds a floating button to copy selected text (Scroll-Friendly)

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(Tôi đã có Trình quản lý tập lệnh người dùng, hãy cài đặt nó!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Easy Text Selection Copier
// @namespace    http://tampermonkey.net/
// @version      1.3
// @description  Adds a floating button to copy selected text (Scroll-Friendly)
// @author       You
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    let capturedText = "";

    const btn = document.createElement('button');
    btn.textContent = '📋 Copy';
    // Using cssText for cleaner styling
    btn.style.cssText = `
        position: fixed;
        padding: 8px 12px;
        background: #333;
        color: #fff;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        z-index: 999999;
        display: none;
        box-shadow: 0 2px 5px rgba(0,0,0,0.3);
        font-family: sans-serif;
        pointer-events: auto;
    `;
    document.body.appendChild(btn);

    // Track selection on mouseup
    document.addEventListener('mouseup', function(e) {
        // Tiny delay to allow the selection to finalize
        setTimeout(() => {
            const selection = window.getSelection();
            const text = selection.toString().trim();
            
            if (text.length > 0) {
                capturedText = text;
                btn.style.display = 'block';
                
                // Position button relative to the viewport (fixed)
                // This ensures it stays near the cursor even if you scrolled during selection
                btn.style.left = e.clientX + 10 + 'px';
                btn.style.top = e.clientY + 10 + 'px';
            } else if (e.target !== btn) {
                btn.style.display = 'none';
            }
        }, 10);
    });

    // Prevent button from stealing focus (which unselects text)
    btn.addEventListener('mousedown', function(e) {
        e.preventDefault();
        e.stopPropagation();
    });

    btn.addEventListener('click', function(e) {
        e.stopPropagation();
        if (capturedText.length > 0) {
            navigator.clipboard.writeText(capturedText).then(() => {
                btn.textContent = '✅ Copied!';
                setTimeout(() => {
                    btn.style.display = 'none';
                    btn.textContent = '📋 Copy';
                    capturedText = "";
                }, 1000);
            });
        }
    });

    // Hide when clicking elsewhere, but NOT when scrolling
    document.addEventListener('mousedown', function(e) {
        if (e.target !== btn) {
            btn.style.display = 'none';
        }
    });

    // Optional: Update button position on scroll if you want it to "follow" the text
    // Otherwise, 'position: fixed' keeps it at the mouse-up coordinates relative to the screen.
    window.addEventListener('scroll', function() {
        if (btn.style.display === 'block') {
            // We keep it visible; user can still click it after scrolling.
        }
    }, { passive: true });

})();