@fecp/mobile
Version:
42 lines (41 loc) • 1.44 kB
JavaScript
;
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
function useCursor() {
let selectionInfo;
function recordCursor(inputElement) {
if (inputElement == void 0) return;
const { selectionStart, selectionEnd, value } = inputElement;
if (selectionStart == null || selectionEnd == null) return;
const beforeTxt = value.slice(0, Math.max(0, selectionStart));
const afterTxt = value.slice(Math.max(0, selectionEnd));
selectionInfo = {
selectionStart,
selectionEnd,
value,
beforeTxt,
afterTxt
};
}
function setCursor(inputElement) {
if (inputElement == void 0 || selectionInfo == void 0) return;
const { value } = inputElement;
const { beforeTxt, afterTxt, selectionStart } = selectionInfo;
if (beforeTxt == void 0 || afterTxt == void 0 || selectionStart == void 0)
return;
let startPos = value.length;
if (value.endsWith(afterTxt)) {
startPos = value.length - afterTxt.length;
} else if (value.startsWith(beforeTxt)) {
startPos = beforeTxt.length;
} else {
const beforeLastChar = beforeTxt[selectionStart - 1];
const newIndex = value.indexOf(beforeLastChar, selectionStart - 1);
if (newIndex !== -1) {
startPos = newIndex + 1;
}
}
inputElement.setSelectionRange(startPos, startPos);
}
return [recordCursor, setCursor];
}
exports.useCursor = useCursor;