Function getColorRange

src/utils/color/regex.js:253–290

()

 * @returns {{from:number,to:number}|null}
 */
export function getColorRange() {
	const { editor } = editorManager;

	try {
		const sel = editor.state.selection.main;
		const from = sel.from;
		const to = sel.to;

		// If there is a selection, validate and return it
		if (from !== to) {
			const text = editor.state.doc.sliceString(from, to);
			if (!isValidColor(text)) return null;
			return { from, to };
		}

		// No selection: find color under cursor in the current line
		const head = sel.head;
		const line = editor.state.doc.lineAt(head);
		const lineText = line.text;
		const col = head - line.from;

		const regex = colorRegex.anyGlobal;
		let match;

		while ((match = regex.exec(lineText))) {
			const startCol = match.index + match[1].length;
			const endCol = startCol + match[2].length;

			if (col >= startCol && col <= endCol) {
				return { from: line.from + startCol, to: line.from + endCol };
			}
		}

		return null;
	} catch {
		return null;
	}
}

export function isValidColor(value) {
	return colorRegex.anyStrict.test(value);