[EuiSelectable] call searchProps functions on search/change (#4153)

* calling search props functions on search/change

* adding method property and types per pr feedback

CHANGELOG.md

@@ -11,6 +11,7 @@
 - Fixed a condition in `EuiInMemoryTable` to avoid mistaken assignment of `sortName` ([#4138](https://github.com/elastic/eui/pull/4138))
 - Fixed bug in small `EuiImage`'s not respecting the optional sizes when `allowFullScreen` is set to true ([#4207](https://github.com/elastic/eui/pull/4207))
 - Fixed incorrect initial rendering of `EuiDualRange` thumbs when element width is 0 ([#4230](https://github.com/elastic/eui/pull/4230))
+- Fixed bug in `EuiSelectable` to call `searchProps.onChange` and `searchProps.onSearch` calls in `EuiSelectable` ([#4153](https://github.com/elastic/eui/pull/4153))
 
 **Theme: Amsterdam**
 

src/components/selectable/selectable.tsx

@@ -333,6 +333,9 @@ export class EuiSelectable<T = {}> extends Component<
         }
       }
     );
+    if (this.props.searchProps && this.props.searchProps.onSearch) {
+      this.props.searchProps.onSearch(searchValue);
+    }
   };
 
   onContainerBlur = (e: React.FocusEvent) => {
@@ -353,6 +356,12 @@ export class EuiSelectable<T = {}> extends Component<
     if (this.props.onChange) {
       this.props.onChange(options);
     }
+    if (this.props.searchProps && this.props.searchProps.onChange) {
+      this.props.searchProps.onChange(
+        { ...this.state.visibleOptions },
+        this.state.searchValue
+      );
+    }
   };
 
   render() {
@@ -390,8 +399,11 @@ export class EuiSelectable<T = {}> extends Component<
     const {
       'aria-label': searchAriaLabel,
       'aria-describedby': searchAriaDescribedby,
+      onChange: propsOnChange,
+      onSearch,
       ...cleanedSearchProps
-    } = searchProps || unknownAccessibleName;
+    } = (searchProps || unknownAccessibleName) as typeof searchProps &
+      typeof unknownAccessibleName;
     const {
       'aria-label': listAriaLabel,
       'aria-describedby': listAriaDescribedby,