// ==UserScript==
// @name         文本替换插件1
// @namespace    your-namespace
// @version      1.0
// @description  在网页中替换文本
// @match        http://*/*
// @match        https://*/*
// @grant        none
// @license      MIT
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    var originalText = '';
    var replacementText = '';

    // 创建弹窗
    var dialog = document.createElement('div');
    dialog.innerHTML = `
        <p>请输入要替换的文本:</p>
        <input type="text" id="originalText" value="">
        <p>请输入替换后的文本:</p>
        <input type="text" id="replacementText" value="">
        <br><br>
        <button id="replaceButton">替换</button>
        <button id="undoButton">撤销</button>
        <button id="closeButton">关闭</button>
    `;
    dialog.style.position = 'fixed';
    dialog.style.top = '20px';
    dialog.style.right = '20px';
    dialog.style.backgroundColor = '#000';
    dialog.style.color = '#fff';
    dialog.style.padding = '20px';
    dialog.style.border = '1px solid #ccc';
    dialog.style.boxShadow = '0 0 10px rgba(0, 0, 0, 0.1)';
    dialog.style.zIndex = '9999';
    dialog.style.display = 'none';
    document.body.appendChild(dialog);

    // 按下 Ctrl+Alt+H 键时触发
    document.addEventListener('keydown', function(event) {
        if (event.ctrlKey && event.altKey && event.key === 'h') {
            dialog.style.display = 'block'; // 显示弹窗
        }
    });

    // 点击替换按钮时触发
    document.getElementById('replaceButton').addEventListener('click', function() {
        originalText = document.getElementById('originalText').value;
        replacementText = document.getElementById('replacementText').value;
        replaceText();
    });

    // 点击撤销按钮时触发
    document.getElementById('undoButton').addEventListener('click', function() {
        originalText = document.getElementById('replacementText').value;
        replacementText = document.getElementById('originalText').value;
        replaceText();
    });

    // 点击关闭按钮时触发
    document.getElementById('closeButton').addEventListener('click', function() {
        dialog.style.display = 'none'; // 关闭弹窗
    });

    // 执行文本替换操作
    function replaceText() {
        var elements = document.getElementsByTagName('*');
        for (var i = 0; i < elements.length; i++) {
            var element = elements[i];
            for (var j = 0; j < element.childNodes.length; j++) {
                var node = element.childNodes[j];
                if (node.nodeType === 3) {
                    var text = node.nodeValue;
                    var replacedText = text.replace(new RegExp(originalText, 'g'), replacementText);
                    if (replacedText !== text) {
                        element.replaceChild(document.createTextNode(replacedText), node);
                    }
                }
            }
        }
    }
})();