Easy Text Selection Copier

Adds a floating button to copy selected text (Scroll-Friendly)
줄 바꿈
// ==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 });

})();