30 lines
1.1 KiB
TypeScript
30 lines
1.1 KiB
TypeScript
const ELEMENT_NODE = 1;
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export default function getMessageIdsForSelectedText() {
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let selectedFragments = window.getSelection()?.getRangeAt(0).cloneContents();
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if (!selectedFragments || selectedFragments.childElementCount === 0) {
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return;
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}
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const messageIds = Array.from(selectedFragments.children)
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.reduce((result, node) => {
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if (node.nodeType === ELEMENT_NODE && node.classList.contains('message-date-group')) {
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return Array.from(node.querySelectorAll('.Message'))
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.reduce((acc, messageEl) => acc.concat(Number((messageEl as HTMLElement).dataset.messageId)), result);
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} else if (node.nodeType === ELEMENT_NODE && node.classList.contains('Message')) {
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return result.concat(Number((node as HTMLElement).dataset.messageId));
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}
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return result;
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}, [] as number[]);
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// Cleanup a document fragment because it is playing media content in the background
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while (selectedFragments.firstChild) {
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selectedFragments.removeChild(selectedFragments.firstChild);
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}
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selectedFragments = undefined;
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return messageIds;
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}
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