allow pass pointer to slice

fzf.go

@@ -1,6 +1,11 @@
 package fzf
 
-import tea "github.com/charmbracelet/bubbletea"
+import (
+	"fmt"
+	"reflect"
+
+	tea "github.com/charmbracelet/bubbletea"
+)
 
 var defaultFindOption = findOption{
 	itemPrefixFunc: nil,
@@ -30,7 +35,15 @@ func (fzf *FZF) Find(items interface{}, itemFunc func(i int) string, opts ...Fin
 		opt(&o)
 	}
 
-	is, err := newItems(items, itemFunc, o.itemPrefixFunc)
+	rv := reflect.ValueOf(items)
+	switch {
+	case rv.Kind() == reflect.Slice:
+	case rv.Kind() == reflect.Ptr && reflect.Indirect(rv).Kind() == reflect.Slice:
+	default:
+		return nil, fmt.Errorf("items must be a slice, but got %T", items)
+	}
+
+	is, err := newItems(rv, itemFunc, o.itemPrefixFunc)
 	if err != nil {
 		return nil, err
 	}

item.go

@@ -1,7 +1,6 @@
 package fzf
 
 import (
-	"fmt"
 	"reflect"
 )
 
@@ -11,12 +10,7 @@ type items struct {
 	itemPrefixFunc func(i int) string
 }
 
-func newItems(is interface{}, itemFunc func(i int) string, itemPrefixFunc func(i int) string) (*items, error) {
-	rv := reflect.ValueOf(is)
-	if rv.Kind() != reflect.Slice {
-		return nil, fmt.Errorf("items must be a slice, but got %T", is)
-	}
-
+func newItems(rv reflect.Value, itemFunc func(i int) string, itemPrefixFunc func(i int) string) (*items, error) {
 	return &items{
 		items:          rv,
 		itemFunc:       itemFunc,
@@ -29,7 +23,11 @@ func (is items) String(i int) string {
 }
 
 func (is items) Len() int {
-	return is.items.Len()
+	if is.items.Kind() == reflect.Ptr {
+		return reflect.Indirect(is.items).Len()
+	} else {
+		return is.items.Len()
+	}
 }
 
 func (is items) HasItemPrefixFunc() bool {