feat(hooks): add useOnViewportChange

packages/core/src/hooks/useOnSelectionChange.ts

@@ -0,0 +1,18 @@
+import { useEffect } from 'react';
+
+import { useStoreApi } from './useStore';
+import type { OnSelectionChangeFunc } from '../types';
+
+export type UseOnSelectionChangeOptions = {
+  onChange?: OnSelectionChangeFunc;
+};
+
+function useOnSelectionChange({ onChange }: UseOnSelectionChangeOptions) {
+  const store = useStoreApi();
+
+  useEffect(() => {
+    store.setState({ onSelectionChange: onChange });
+  }, [onChange]);
+}
+
+export default useOnSelectionChange;

packages/core/src/hooks/useOnViewportChange.ts

@@ -0,0 +1,28 @@
+import { useEffect } from 'react';
+
+import { useStoreApi } from './useStore';
+import type { OnViewportChange } from '../types';
+
+export type UseOnViewportChangeOptions = {
+  onStart?: OnViewportChange;
+  onChange?: OnViewportChange;
+  onEnd?: OnViewportChange;
+};
+
+function useOnViewportChange({ onStart, onChange, onEnd }: UseOnViewportChangeOptions) {
+  const store = useStoreApi();
+
+  useEffect(() => {
+    store.setState({ onViewportChangeStart: onStart });
+  }, [onStart]);
+
+  useEffect(() => {
+    store.setState({ onViewportChange: onChange });
+  }, [onChange]);
+
+  useEffect(() => {
+    store.setState({ onViewportChangeEnd: onEnd });
+  }, [onEnd]);
+}
+
+export default useOnViewportChange;