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frontend/node_modules/@rc-component/trigger/lib/hooks/useWatch.js

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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = useWatch;
+var _toConsumableArray2 = _interopRequireDefault(require("@babel/runtime/helpers/toConsumableArray"));
+var _useLayoutEffect = _interopRequireDefault(require("rc-util/lib/hooks/useLayoutEffect"));
+var _util = require("../util");
+function useWatch(open, target, popup, onAlign, onScroll) {
+  (0, _useLayoutEffect.default)(function () {
+    if (open && target && popup) {
+      var targetElement = target;
+      var popupElement = popup;
+      var targetScrollList = (0, _util.collectScroller)(targetElement);
+      var popupScrollList = (0, _util.collectScroller)(popupElement);
+      var win = (0, _util.getWin)(popupElement);
+      var mergedList = new Set([win].concat((0, _toConsumableArray2.default)(targetScrollList), (0, _toConsumableArray2.default)(popupScrollList)));
+      function notifyScroll() {
+        onAlign();
+        onScroll();
+      }
+      mergedList.forEach(function (scroller) {
+        scroller.addEventListener('scroll', notifyScroll, {
+          passive: true
+        });
+      });
+      win.addEventListener('resize', notifyScroll, {
+        passive: true
+      });
+
+      // First time always do align
+      onAlign();
+      return function () {
+        mergedList.forEach(function (scroller) {
+          scroller.removeEventListener('scroll', notifyScroll);
+          win.removeEventListener('resize', notifyScroll);
+        });
+      };
+    }
+  }, [open, target, popup]);
+}