// ==UserScript==
// @name         解除网页复制和右键菜单限制
// @namespace    http://tampermonkey.net/
// @version      1.0.0
// @description  解除网页对复制文本和右键菜单的限制
// @author       MERCURY
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // 解除复制限制
    document.addEventListener('copy', function(e) {
        e.stopImmediatePropagation();
    }, true);

    document.addEventListener('cut', function(e) {
        e.stopImmediatePropagation();
    }, true);

    // 解除右键菜单限制
    document.addEventListener('contextmenu', function(e) {
        e.stopImmediatePropagation();
    }, true);

    // 移除阻止选择文本的样式
    function removeSelectionStyles() {
        document.querySelectorAll('*').forEach(element => {
            element.style.userSelect = 'text !important';
            element.style.webkitUserSelect = 'text !important';
            element.style.MozUserSelect = 'text !important';
            element.style.msUserSelect = 'text !important';
            element.style.webkitTouchCallout = 'default !important';
        });
    }

    // 移除阻止拖拽的属性
    function removeDragPrevention() {
        document.querySelectorAll('img, a').forEach(element => {
            element.draggable = true;
            element.onmousedown = null;
            element.ondragstart = null;
        });
    }

    // 执行移除限制的函数
    removeSelectionStyles();
    removeDragPrevention();

    // 监听DOM变化，对新添加的元素也应用这些修改
    const observer = new MutationObserver(function(mutations) {
        removeSelectionStyles();
        removeDragPrevention();
    });

    observer.observe(document, {
        childList: true,
        subtree: true
    });

    // 覆盖常见的防复制函数
    const disableSelectStart = function(e) {
        e.stopImmediatePropagation();
        return true;
    };

    document.addEventListener('selectstart', disableSelectStart, true);
    document.addEventListener('dragstart', disableSelectStart, true);
    document.addEventListener('mousedown', disableSelectStart, true);

    // 覆盖常见的防复制变量和函数
    window.oncontextmenu = null;
    window.onkeydown = null;
    window.onkeyup = null;
    window.onmousedown = null;
    window.onmouseup = null;
    document.oncontextmenu = null;
    document.onkeydown = null;
    document.onkeyup = null;
    document.onmousedown = null;
    document.onmouseup = null;

    // 尝试覆盖常见的防复制脚本变量
    const overwriteVariables = [
        'disableCopy', 'disableRightClick', 'ondragstart', 'onselectstart',
        'oncontextmenu', 'onkeydown', 'onkeyup', 'onmousedown', 'onmouseup'
    ];

    overwriteVariables.forEach(varName => {
        try {
            window[varName] = null;
            document[varName] = null;
        } catch (e) {}
    });

    console.log('复制和右键限制已解除');
})();