text book PDF Link Extractor for smartedu

Extract and display links from an smartedu's text books
当前为 2024-08-06 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name         text book PDF Link Extractor for smartedu
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  Extract and display links from an smartedu's text books
// @author       Fieber Zhang
// @match        *://basic.smartedu.cn/tchMaterial/*
// @grant        none
// @license MIT
// ==/UserScript==

(function() {
    'use strict';

    // 创建浮动窗口的样式
    const styles = `
        #iframe-url-extractor {
            position: fixed;
            top: 10px;
            right: 10px;
            width: 300px;
            max-height: 200px;
            overflow-y: auto;
            background: white;
            border: 1px solid #ccc;
            box-shadow: 0 0 10px rgba(0,0,0,0.5);
            z-index: 9999;
            padding: 10px;
            border-radius: 5px;
        }
        #iframe-url-extractor h2 {
            margin: 0;
            font-size: 16px;
            border-bottom: 1px solid #ccc;
            padding-bottom: 5px;
            margin-bottom: 10px;
        }
        #iframe-url-extractor a {
            display: block;
            margin-bottom: 5px;
            color: blue;
            text-decoration: none;
        }
        #iframe-url-extractor a:hover {
            text-decoration: underline;
        }
    `;

    // 向页面插入样式
    const styleSheet = document.createElement("style");
    styleSheet.type = "text/css";
    styleSheet.innerText = styles;
    document.head.appendChild(styleSheet);

    // 创建浮动窗口
    const container = document.createElement('div');
    container.id = 'iframe-url-extractor';
    container.innerHTML = '<h2>Extracted URL</h2><div id="url-list">Loading...</div>';
    document.body.appendChild(container);

    // 提取并显示 URL
    window.addEventListener('load', function() {
        const iframe = document.querySelector('iframe');

        if (iframe && iframe.contentWindow) {
            iframe.addEventListener('load', function() {
                try {
                    const iframeDoc = iframe.contentDocument || iframe.contentWindow.document;
                    const iframeHTML = iframeDoc.documentElement.outerHTML;

                    // 正则表达式提取 #document(URL)
                    const urlRegex = /#document\((.*?)\)/;
                    const match = urlRegex.exec(iframeHTML);

                    const urlList = document.getElementById('url-list');
                    urlList.innerHTML = '';

                    if (match && match[1]) {
                        const extractedURL = match[1];
                        const linkElement = document.createElement('a');
                        linkElement.href = extractedURL;
                        linkElement.target = '_blank'; // 在新标签页中打开
                        linkElement.textContent = extractedURL;
                        urlList.appendChild(linkElement);
                    } else {
                        urlList.textContent = 'No matching URL found.';
                    }

                } catch (e) {
                    console.error('无法访问 iframe 内容：', e);
                    const urlList = document.getElementById('url-list');
                    urlList.textContent = 'Error accessing iframe content.';
                }
            });
        }
    });

})();
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