45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
function useCursor(input) {
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let selectionInfo;
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function recordCursor() {
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if (input.value == void 0)
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return;
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const { selectionStart, selectionEnd, value } = input.value;
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if (selectionStart == null || selectionEnd == null)
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return;
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const beforeTxt = value.slice(0, Math.max(0, selectionStart));
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const afterTxt = value.slice(Math.max(0, selectionEnd));
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selectionInfo = {
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selectionStart,
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selectionEnd,
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value,
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beforeTxt,
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afterTxt
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};
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}
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function setCursor() {
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if (input.value == void 0 || selectionInfo == void 0)
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return;
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const { value } = input.value;
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const { beforeTxt, afterTxt, selectionStart } = selectionInfo;
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if (beforeTxt == void 0 || afterTxt == void 0 || selectionStart == void 0)
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return;
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let startPos = value.length;
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if (value.endsWith(afterTxt)) {
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startPos = value.length - afterTxt.length;
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} else if (value.startsWith(beforeTxt)) {
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startPos = beforeTxt.length;
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} else {
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const beforeLastChar = beforeTxt[selectionStart - 1];
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const newIndex = value.indexOf(beforeLastChar, selectionStart - 1);
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if (newIndex !== -1) {
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startPos = newIndex + 1;
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}
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}
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input.value.setSelectionRange(startPos, startPos);
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}
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return [recordCursor, setCursor];
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}
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export { useCursor };
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//# sourceMappingURL=index.mjs.map
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