botframework-webchat-component
Version:
React component of botframework-webchat
64 lines (63 loc) • 11 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = useUndoStack;
var _react = require("react");
var _UndoEntry = _interopRequireDefault(require("./UndoEntry"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
function useUndoStack(elementRef) {
var undoStackRef = (0, _react.useRef)([]);
var push = (0, _react.useCallback)(function (group) {
var element = elementRef.current;
if (!element) {
return;
}
var undoStack = undoStackRef.current;
var _undoStack = _slicedToArray(undoStack, 1),
firstEntry = _undoStack[0];
var selectionEnd = element.selectionEnd,
selectionStart = element.selectionStart,
value = element.value;
if (!group || group !== (firstEntry === null || firstEntry === void 0 ? void 0 : firstEntry.group)) {
value === (firstEntry === null || firstEntry === void 0 ? void 0 : firstEntry.value) && undoStack.shift();
undoStack.unshift(new _UndoEntry.default(value, selectionStart, selectionEnd, group));
}
}, [elementRef, undoStackRef]);
var undo = (0, _react.useCallback)(function () {
var element = elementRef.current;
if (!element) {
return;
}
var undoStack = undoStackRef.current;
var lastEntry;
while (undoStack.length) {
var _lastEntry;
var _undoStack2 = _slicedToArray(undoStack, 1);
lastEntry = _undoStack2[0];
if (((_lastEntry = lastEntry) === null || _lastEntry === void 0 ? void 0 : _lastEntry.value) === element.value) {
undoStack.shift();
} else {
break;
}
}
if (lastEntry) {
element.value = lastEntry.value;
element.selectionStart = lastEntry.selectionStart;
element.selectionEnd = lastEntry.selectionEnd;
} else {
element.value = '';
}
}, [elementRef, undoStackRef]);
return Object.freeze({
push: push,
undo: undo
});
}
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