add markdown copy to issues page
// ==UserScript==
// @name issues copy
// @namespace https://github.com/zhzLuke96/github-issues-copy-user-js
// @version 1.0.2
// @description:cn 为issues页面添加markdown复制按钮
// @description:en add markdown copy to issues page
// @author zhzluke96
// @match https://*.github.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=github.com
// @grant none
// @license MIT
// @supportURL https://github.com/zhzLuke96/github-issues-copy-user-js/issues
// @description add markdown copy to issues page
// ==/UserScript==
(function () {
"use strict";
const _historyWrap = function (type) {
const orig = history[type];
const e = new Event(type);
return function () {
const rv = orig.apply(this, arguments);
e.arguments = arguments;
window.dispatchEvent(e);
return rv;
};
};
history.pushState = _historyWrap("pushState");
history.replaceState = _historyWrap("replaceState");
const html_tpls = {
btn: (callback) => {
const btn = renderHtml(
`<button id="issues_copy_btn" data-component="IconButton" type="button" class="prc-Button-ButtonBase-c50BI prc-Button-IconButton-szpyj" data-loading="false" data-no-visuals="true" data-size="medium" data-variant="invisible" aria-describedby=":r59:-loading-announcement" aria-labelledby=":r57:">
<svg viewBox="0 0 16 16" width="16" height="16" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
<text x="1" y="11" font-size="10" font-family="Arial, sans-serif" fill="currentColor">MD</text>
</svg>
</button>`
);
btn.addEventListener("click", callback);
btn.title = "copy this page to markdown";
btn.dataset.check_id = "issues_copy";
return btn;
},
};
function is_injected() {
return (
document.querySelectorAll(`[data-check_id="issues_copy"]`).length > 0
);
}
function get_issues_markdown_content() {
const issues_elements = [
`[data-component="PH_Title"]`,
`[data-testid="issue-viewer-issue-container"]`,
`[data-testid="issue-timeline-container"]`,
];
return issues_elements
.map((selector) => document.querySelector(selector))
.map((element) => htmlElementToMarkdown(element))
.join("\n\n");
}
function is_issues_page() {
return (
document.querySelectorAll(`[data-testid="issue-viewer-issue-container"]`)
.length > 0
);
}
async function wait_for_page_render(timeout_ms = 1000) {
return new Promise((resolve) => {
let timer = null;
const observer = new MutationObserver(() => {
clearTimeout(timer);
refresh();
});
function refresh() {
timer = setTimeout(() => {
observer.disconnect();
resolve();
}, timeout_ms);
}
observer.observe(document.documentElement, {
childList: true,
subtree: true,
attributes: true,
characterData: true,
});
refresh();
});
}
async function do_inject() {
await wait_for_page_render();
if (is_injected()) return;
if (!is_issues_page()) return;
const anchor_span = document.querySelector(
`[data-component="PH_Actions"] [class*="CopyToClipboardButton"]`
);
anchor_span.after(
html_tpls.btn(() => {
const markdown_content = get_issues_markdown_content();
const textarea = document.createElement("textarea");
textarea.value = markdown_content;
document.body.appendChild(textarea);
textarea.select();
document.execCommand("copy");
document.body.removeChild(textarea);
alert("[issues_copy]copy success");
console.log("[issues_copy]copy success");
console.log(markdown_content);
})
);
}
do_inject();
window.addEventListener("pushState", () => {
do_inject();
});
window.addEventListener("replaceState", () => {
do_inject();
});
// ----------------------------
// 拓展区域
// ----------------------------
/**
*
* @param {HTMLElement} element
* @returns {boolean}
*/
function is_hide_element(element) {
// 判断是否为隐藏
return (
element.hasAttribute("hidden") ||
element.classList.contains("hidden") ||
element.style.display === "none" ||
getComputedStyle(element).display === "none" ||
getComputedStyle(element).visibility === "hidden" ||
getComputedStyle(element).opacity === "0"
);
}
/**
*
* @param {HTMLElement} element
* @returns {string}
*/
function htmlElementToMarkdown(element) {
/**
*
* @param {HTMLElement} node
* @returns string
*/
function process(node) {
if (node.nodeType === Node.TEXT_NODE) {
return node.textContent;
}
if (node.nodeType !== Node.ELEMENT_NODE) {
return "";
}
if (is_hide_element(node)) {
return "";
}
const tag = node.tagName.toLowerCase();
let content = Array.from(node.childNodes).map(process).join("");
if (content.trim() === "") {
return "";
}
if (node.classList.contains("markdown-body")) {
content = "\n" + content;
}
switch (tag) {
case "h1":
return `# ${content}\n\n`;
case "h2":
return `## ${content}\n\n`;
case "h3":
return `### ${content}\n\n`;
case "h4":
return `#### ${content}\n\n`;
case "h5":
return `##### ${content}\n\n`;
case "h6":
return `###### ${content}\n\n`;
case "p":
return `${content}\n\n`;
case "strong":
case "b":
return `**${content}**`;
case "em":
case "i":
return `*${content}*`;
case "a":
return `[${content}](${node.getAttribute("href")})`;
case "code": {
const code_content = node.innerText;
return `\`${code_content}\``;
}
case "pre": {
// 尝试查找代码块的语言 父元素上的 `highlight-source-xxx` 就是语言
const lang =
Array.from(node.parentElement.classList)
.find((className) => className.startsWith("highlight-source-"))
?.replace("highlight-source-", "") ?? "";
const code_content = node.innerText;
return `\n\`\`\`${lang}\n${code_content}\n\`\`\`\n`;
}
case "ul":
return (
"\n" +
Array.from(node.children)
.map((li) => `- ${process(li)}`)
.join("\n") +
"\n\n"
);
case "ol":
return (
"\n" +
Array.from(node.children)
.map((li, i) => `${i + 1}. ${process(li)}`)
.join("\n") +
"\n\n"
);
case "br":
return " \n";
case "blockquote":
return "> " + content.replace(/\n/g, "\n> ") + "\n\n";
case "img":
const alt = node.getAttribute("alt") || "";
const src = node.getAttribute("src") || "";
return ``;
default:
return content;
}
}
return process(element).trim();
}
/**
*
* @param {string} html_content
* @returns {HTMLElement}
*/
function renderHtml(html_content) {
const container = document.createElement("div");
container.innerHTML = html_content;
return container.children[0];
}
})();
