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2026-05-25 17:08:18 +08:00
parent df501f6151
commit f1259b71b5
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+import * as React from 'react';
+export const SEARCH_MARK = '__rc_cascader_search_mark__';
+const defaultFilter = (search, options, {
+  label = ''
+}) => options.some(opt => String(opt[label]).toLowerCase().includes(search.toLowerCase()));
+const defaultRender = (inputValue, path, prefixCls, fieldNames) => path.map(opt => opt[fieldNames.label]).join(' / ');
+const useSearchOptions = (search, options, fieldNames, prefixCls, config, enableHalfPath) => {
+  const {
+    filter = defaultFilter,
+    render = defaultRender,
+    limit = 50,
+    sort
+  } = config;
+  return React.useMemo(() => {
+    const filteredOptions = [];
+    if (!search) {
+      return [];
+    }
+    function dig(list, pathOptions, parentDisabled = false) {
+      list.forEach(option => {
+        // Perf saving when `sort` is disabled and `limit` is provided
+        if (!sort && limit !== false && limit > 0 && filteredOptions.length >= limit) {
+          return;
+        }
+        const connectedPathOptions = [...pathOptions, option];
+        const children = option[fieldNames.children];
+        const mergedDisabled = parentDisabled || option.disabled;
+
+        // If current option is filterable
+        if (
+        // If is leaf option
+        !children || children.length === 0 ||
+        // If is changeOnSelect or multiple
+        enableHalfPath) {
+          if (filter(search, connectedPathOptions, {
+            label: fieldNames.label
+          })) {
+            filteredOptions.push({
+              ...option,
+              disabled: mergedDisabled,
+              [fieldNames.label]: render(search, connectedPathOptions, prefixCls, fieldNames),
+              [SEARCH_MARK]: connectedPathOptions,
+              [fieldNames.children]: undefined
+            });
+          }
+        }
+        if (children) {
+          dig(option[fieldNames.children], connectedPathOptions, mergedDisabled);
+        }
+      });
+    }
+    dig(options, []);
+
+    // Do sort
+    if (sort) {
+      filteredOptions.sort((a, b) => {
+        return sort(a[SEARCH_MARK], b[SEARCH_MARK], search, fieldNames);
+      });
+    }
+    return limit !== false && limit > 0 ? filteredOptions.slice(0, limit) : filteredOptions;
+  }, [search, options, fieldNames, prefixCls, render, enableHalfPath, filter, sort, limit]);
+};
+export default useSearchOptions;