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feart: Enhances clipboard copying with MIME type selection #17

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8743f66
Enhances clipboard copying with MIME type selection
twofingerrightclick May 14, 2026
9ab1dca
Only Include the actual supported formats of Async Clipboard API
twofingerrightclick May 14, 2026
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79 changes: 64 additions & 15 deletions index.jsx
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import React, { useCallback } from 'react';
import React, { useCallback, useState } from 'react';
import ReactDOM from 'react-dom';

const MDN_BASE = `https://developer.mozilla.org/en-US/docs/Web/API`;
Expand Down Expand Up @@ -26,6 +26,64 @@ const MDN_URLS = {
}
};

const TEXT_COPY_MIME_OPTIONS = [
{ value: 'text/plain', label: 'Plain text' },
{ value: 'text/html', label: 'HTML' }
];

function CopyAsMime({ text }) {
const [mimeType, setMimeType] = useState('text/plain');

const writeAsMime = useCallback(async () => {
if (!navigator.clipboard) {
return;
}

if (navigator.clipboard.write && window.ClipboardItem) {
try {
const items = {
'text/plain': new Blob([text], {
type: 'text/plain'
})
};

if (mimeType !== 'text/plain') {
items[mimeType] = new Blob([text], {
type: mimeType
});
}

await navigator.clipboard.write([new ClipboardItem(items)]);
} catch (error) {
console.warn(
'ClipboardItem write failed, falling back to writeText',
error
);
}
} else if (navigator.clipboard.writeText) {
await navigator.clipboard.writeText(text);
}
}, [mimeType, text]);

return (
<div className="cb-copy-as-dropdown">
<button type="button" onClick={writeAsMime}>
Copy as
</button>
<select
value={mimeType}
onChange={e => setMimeType(e.target.value)}
>
{TEXT_COPY_MIME_OPTIONS.map(option => (
<option key={option.value} value={option.value}>
{option.label}
</option>
))}
</select>
</div>
);
}

async function extractData(data) {
if (!data) {
return undefined;
Expand Down Expand Up @@ -230,22 +288,13 @@ function ClipboardInspector(props) {
navigator.clipboard &&
navigator.clipboard
.writeText && (
<div class="cb-copy">
<button
onClick={e =>
navigator.clipboard.writeText(
obj.data
)
}
>
Copy as
plain text
</button>
</div>
<CopyAsMime
text={obj.data}
/>
)}
</td>
<td>
<pre class="cb-entry">
<pre className="cb-entry">
<code>
{typeof obj.data ===
'object'
Expand Down Expand Up @@ -326,7 +375,7 @@ function ClipboardInspector(props) {
<td>
{item.kind ===
'string' ? (
<pre class="cb-entry">
<pre className="cb-entry">
<code>
{item.as_string_or_file || (
<em>
Expand Down
38 changes: 36 additions & 2 deletions style.css
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Original file line number Diff line number Diff line change
Expand Up @@ -178,8 +178,42 @@ h1 + p {
margin: -0.5em 0;
}

.cb-copy {
padding: 0.5em 0.5em 0.5em 0;
.cb-copy-as-dropdown {
margin-top: 0.75em;
display: inline-flex;
align-items: stretch;
border: 0.1em solid;
background: #f3f3f3;
box-shadow: 0.1em 0.1em currentColor;
}

.cb-copy-as-dropdown button {
appearance: none;
border: none;
background: transparent;
padding: 0.5em 0.75em;
font: inherit;
cursor: pointer;
}

.cb-copy-as-dropdown select {
border: none;
background: #fff;
padding: 0.5em 0.6em;
font: inherit;
color: inherit;
outline: none;
width: 7em;
}

.cb-copy-as-dropdown button:hover,
.cb-copy-as-dropdown select:hover {
background: #fafafa;
}

.cb-copy-as-dropdown button:focus,
.cb-copy-as-dropdown select:focus {
outline: 2px solid #006be4;
}

@media (max-width: 60ch) {
Expand Down