fix(striker-ui): expose close handler in dialog header

striker-ui/components/Dialog/DialogHeader.tsx

@@ -1,4 +1,4 @@
-import { FC, ReactNode, useContext, useMemo } from 'react';
+import { FC, ReactNode, useCallback, useContext, useMemo } from 'react';
 
 import { DialogContext } from './Dialog';
 import IconButton from '../IconButton';
@@ -7,10 +7,29 @@ import sxstring from '../../lib/sxstring';
 import { HeaderText } from '../Text';
 
 const DialogHeader: FC<DialogHeaderProps> = (props) => {
-  const { children, showClose } = props;
+  const {
+    children,
+    onClose = ({ handlers: { base } }, ...args) => base?.call(null, ...args),
+    showClose,
+  } = props;
 
   const dialogContext = useContext(DialogContext);
 
+  const closeHandler = useCallback<ButtonClickEventHandler>(
+    (...args) =>
+      onClose(
+        {
+          handlers: {
+            base: () => {
+              dialogContext?.setOpen(false);
+            },
+          },
+        },
+        ...args,
+      ),
+    [dialogContext, onClose],
+  );
+
   const title = useMemo<ReactNode>(
     () => sxstring(children, HeaderText),
     [children],
@@ -19,15 +38,9 @@ const DialogHeader: FC<DialogHeaderProps> = (props) => {
   const close = useMemo<ReactNode>(
     () =>
       showClose && (
-        <IconButton
-          mapPreset="close"
-          onClick={() => {
-            dialogContext?.setOpen(false);
-          }}
-          size="small"
-        />
+        <IconButton mapPreset="close" onClick={closeHandler} size="small" />
       ),
-    [dialogContext, showClose],
+    [closeHandler, showClose],
   );
 
   return (

striker-ui/components/Dialog/DialogWithHeader.tsx

@@ -18,6 +18,7 @@ const DialogWithHeader: ForwardRefExoticComponent<
       dialogProps,
       header,
       loading,
+      onClose,
       openInitially,
       showClose,
       wide,
@@ -31,7 +32,9 @@ const DialogWithHeader: ForwardRefExoticComponent<
         ref={ref}
         wide={wide}
       >
-        <DialogHeader showClose={showClose}>{header}</DialogHeader>
+        <DialogHeader onClose={onClose} showClose={showClose}>
+          {header}
+        </DialogHeader>
         {children}
       </Dialog>
     );

striker-ui/types/Dialog.d.ts

@@ -39,6 +39,7 @@ type DialogActionGroupProps = DialogActionGroupOptionalProps;
 /** DialogHeader */
 
 type DialogHeaderOptionalProps = {
+  onClose?: ExtendableEventHandler<ButtonClickEventHandler>;
   showClose?: boolean;
 };