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LibWeb: Implement the "subscript" editing command

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Jelle Raaijmakers 2025-01-08 17:06:20 +01:00 • committed by Andreas Kling
commit ef8af01e1d
Notes: github-actions[bot] 2025-01-10 22:36:16 +00:00
4 changed files with 100 additions and 0 deletions
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34
Tests/LibWeb/Text/input/Editing/execCommand-subscript.html Normal file
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<script src="../include.js"></script>
<div contenteditable="true">foobar</div>
<script>
test(() => {
const range = document.createRange();
getSelection().addRange(range);
const divElm = document.querySelector('div');
const printableSelection = () => {
let activeRange = getSelection().getRangeAt(0);
return `${activeRange.startContainer.nodeName} ${activeRange.startOffset} ${activeRange.endContainer.nodeName} ${activeRange.endOffset}`;
};
const report = () => println(`Div contents: "${divElm.innerHTML}" state: ${document.queryCommandState('subscript')} selection: ${printableSelection()}`);
report();
// Add subscript to 'bar'
range.setStart(divElm.childNodes[0], 3);
range.setEnd(divElm.childNodes[0], 6);
document.execCommand('subscript');
report();
// Add subscript to 'foo'
range.setStart(divElm.childNodes[0], 0);
range.setEnd(divElm.childNodes[0], 3);
document.execCommand('subscript');
report();
// Desubscriptify 'bar'
range.setStart(divElm.childNodes[0].childNodes[1], 0);
range.setEnd(divElm.childNodes[0].childNodes[1], 3);
document.execCommand('subscript');
report();
});
</script>