Add a button to copy the contest ID to the clipboard in AtCoder contest pages
Per
// ==UserScript==
// @name AtCoder Copy Contest ID
// @name:ja AtCoder Copy Contest ID
// @namespace https://github.com/xe-o
// @version 0.2
// @description Add a button to copy the contest ID to the clipboard in AtCoder contest pages
// @description:ja AtCoderコンテストページのナビゲーションバーへ、コンテストIDをコピーするためのボタンを追加します
// @author XERO
// @license MIT
// @match https://atcoder.jp/*
// @grant GM_setClipboard
// @run-at document-idle
// ==/UserScript==
const COPY_BUTTON_LABEL_INIT = "Copy Contest ID";
const COPY_BUTTON_HTML = `
<li>
<a id="contest-id-copy-button" style="cursor: pointer; font-size: 12px">
<span class="glyphicon glyphicon-copy" style="margin-right: 2px" aria-hidden="true"></span>
<span id="copy-button-text">${COPY_BUTTON_LABEL_INIT}</span>
</a>
</li>`;
const copyContestId = (() => {
const $ = (selector, baseElement) =>
(baseElement || document).querySelector(selector);
const getContestID = () => window.location.pathname.split("/")[2];
return () => {
const navbarElement = $(".navbar-nav");
if (!navbarElement) throw new Error("Navbar element not found.");
navbarElement.insertAdjacentHTML("beforeend", COPY_BUTTON_HTML);
const copyButton = $("#contest-id-copy-button");
copyButton.removeEventListener("click", copyToClipboard);
const copyButtonIcon = $(".glyphicon", copyButton);
const copyButtonLabel = $("#copy-button-text");
async function copyToClipboard() {
try {
await GM_setClipboard(getContestID(), {
type: "text",
mimetype: "text/plain",
});
copyButtonIcon.classList.replace("glyphicon-copy", "glyphicon-ok");
} catch (error) {
console.error(`Failed to copy contest ID: ${error}`);
copyButtonIcon.classList.replace("glyphicon-copy", "glyphicon-remove");
} finally {
const copyResultText = copyButtonIcon.classList.contains("glyphicon-ok")
? "Copied!"
: "Failed to copy";
copyButtonLabel.textContent = copyResultText;
setTimeout(() => {
copyButtonLabel.textContent = COPY_BUTTON_LABEL_INIT;
copyButtonIcon.classList.replace(
"glyphicon-ok",
"glyphicon-copy",
"glyphicon-remove"
);
}, 1800);
}
}
copyButton.addEventListener("click", copyToClipboard);
};
})();
copyContestId();