79 lines
2.2 KiB
TypeScript
79 lines
2.2 KiB
TypeScript
// Based on code by the following links:
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// https://stackoverflow.com/a/74528564
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// https://web.dev/articles/async-clipboard
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export function copy(text: string) {
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return new Promise<void>((resolve, reject) => {
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if (
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// Clipboard API requires secure context
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window.isSecureContext &&
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typeof navigator.clipboard !== "undefined" &&
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// @ts-ignore
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navigator.permissions !== "undefined"
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) {
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navigator.permissions
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// @ts-ignore
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.query({ name: "clipboard-write" })
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.then((permission) => {
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if (permission.state === "granted" || permission.state === "prompt") {
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// simple writeText should work for all modern browsers
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navigator.clipboard.writeText(text).then(resolve).catch(reject);
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} else {
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reject(new Error("Permission not granted!"));
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}
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})
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.catch((e) => {
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// Firefox doesn't support clipboard-write permission
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if (navigator.userAgent.indexOf("Firefox") != -1) {
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navigator.clipboard.writeText(text).then(resolve).catch(reject);
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} else {
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reject(e);
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}
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});
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} else if (
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document.queryCommandSupported &&
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document.queryCommandSupported("copy")
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) {
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const textarea = createTemporaryTextarea(text);
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const body = document.activeElement || document.body;
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try {
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body.appendChild(textarea);
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textarea.focus();
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textarea.select();
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document.execCommand("copy");
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resolve();
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} catch (e) {
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reject(e);
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} finally {
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body.removeChild(textarea);
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}
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} else {
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reject(
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new Error("None of copying methods are supported by this browser!")
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);
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}
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});
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}
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const styles = {
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fontSize: "12pt",
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position: "fixed",
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top: 0,
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left: 0,
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width: "2em",
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height: "2em",
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padding: 0,
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margin: 0,
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border: "none",
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outline: "none",
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boxShadow: "none",
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background: "transparent",
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};
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const createTemporaryTextarea = (text: string) => {
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const textarea = document.createElement("textarea");
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textarea.value = text;
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textarea.setAttribute("readonly", "");
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Object.assign(textarea.style, styles);
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return textarea;
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};
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