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frontend/node_modules/rc-resize-observer/lib/SingleObserver/index.js

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+"use strict";
+
+var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+var _objectSpread2 = _interopRequireDefault(require("@babel/runtime/helpers/objectSpread2"));
+var _typeof2 = _interopRequireDefault(require("@babel/runtime/helpers/typeof"));
+var _findDOMNode = _interopRequireDefault(require("rc-util/lib/Dom/findDOMNode"));
+var _ref = require("rc-util/lib/ref");
+var React = _interopRequireWildcard(require("react"));
+var _Collection = require("../Collection");
+var _observerUtil = require("../utils/observerUtil");
+var _DomWrapper = _interopRequireDefault(require("./DomWrapper"));
+function SingleObserver(props, ref) {
+  var children = props.children,
+    disabled = props.disabled;
+  var elementRef = React.useRef(null);
+  var wrapperRef = React.useRef(null);
+  var onCollectionResize = React.useContext(_Collection.CollectionContext);
+
+  // =========================== Children ===========================
+  var isRenderProps = typeof children === 'function';
+  var mergedChildren = isRenderProps ? children(elementRef) : children;
+
+  // ============================= Size =============================
+  var sizeRef = React.useRef({
+    width: -1,
+    height: -1,
+    offsetWidth: -1,
+    offsetHeight: -1
+  });
+
+  // ============================= Ref ==============================
+  var canRef = !isRenderProps && /*#__PURE__*/React.isValidElement(mergedChildren) && (0, _ref.supportRef)(mergedChildren);
+  var originRef = canRef ? (0, _ref.getNodeRef)(mergedChildren) : null;
+  var mergedRef = (0, _ref.useComposeRef)(originRef, elementRef);
+  var getDom = function getDom() {
+    var _elementRef$current;
+    return (0, _findDOMNode.default)(elementRef.current) || (
+    // Support `nativeElement` format
+    elementRef.current && (0, _typeof2.default)(elementRef.current) === 'object' ? (0, _findDOMNode.default)((_elementRef$current = elementRef.current) === null || _elementRef$current === void 0 ? void 0 : _elementRef$current.nativeElement) : null) || (0, _findDOMNode.default)(wrapperRef.current);
+  };
+  React.useImperativeHandle(ref, function () {
+    return getDom();
+  });
+
+  // =========================== Observe ============================
+  var propsRef = React.useRef(props);
+  propsRef.current = props;
+
+  // Handler
+  var onInternalResize = React.useCallback(function (target) {
+    var _propsRef$current = propsRef.current,
+      onResize = _propsRef$current.onResize,
+      data = _propsRef$current.data;
+    var _target$getBoundingCl = target.getBoundingClientRect(),
+      width = _target$getBoundingCl.width,
+      height = _target$getBoundingCl.height;
+    var offsetWidth = target.offsetWidth,
+      offsetHeight = target.offsetHeight;
+
+    /**
+     * Resize observer trigger when content size changed.
+     * In most case we just care about element size,
+     * let's use `boundary` instead of `contentRect` here to avoid shaking.
+     */
+    var fixedWidth = Math.floor(width);
+    var fixedHeight = Math.floor(height);
+    if (sizeRef.current.width !== fixedWidth || sizeRef.current.height !== fixedHeight || sizeRef.current.offsetWidth !== offsetWidth || sizeRef.current.offsetHeight !== offsetHeight) {
+      var size = {
+        width: fixedWidth,
+        height: fixedHeight,
+        offsetWidth: offsetWidth,
+        offsetHeight: offsetHeight
+      };
+      sizeRef.current = size;
+
+      // IE is strange, right?
+      var mergedOffsetWidth = offsetWidth === Math.round(width) ? width : offsetWidth;
+      var mergedOffsetHeight = offsetHeight === Math.round(height) ? height : offsetHeight;
+      var sizeInfo = (0, _objectSpread2.default)((0, _objectSpread2.default)({}, size), {}, {
+        offsetWidth: mergedOffsetWidth,
+        offsetHeight: mergedOffsetHeight
+      });
+
+      // Let collection know what happened
+      onCollectionResize === null || onCollectionResize === void 0 || onCollectionResize(sizeInfo, target, data);
+      if (onResize) {
+        // defer the callback but not defer to next frame
+        Promise.resolve().then(function () {
+          onResize(sizeInfo, target);
+        });
+      }
+    }
+  }, []);
+
+  // Dynamic observe
+  React.useEffect(function () {
+    var currentElement = getDom();
+    if (currentElement && !disabled) {
+      (0, _observerUtil.observe)(currentElement, onInternalResize);
+    }
+    return function () {
+      return (0, _observerUtil.unobserve)(currentElement, onInternalResize);
+    };
+  }, [elementRef.current, disabled]);
+
+  // ============================ Render ============================
+  return /*#__PURE__*/React.createElement(_DomWrapper.default, {
+    ref: wrapperRef
+  }, canRef ? /*#__PURE__*/React.cloneElement(mergedChildren, {
+    ref: mergedRef
+  }) : mergedChildren);
+}
+var RefSingleObserver = /*#__PURE__*/React.forwardRef(SingleObserver);
+if (process.env.NODE_ENV !== 'production') {
+  RefSingleObserver.displayName = 'SingleObserver';
+}
+var _default = exports.default = RefSingleObserver;