# All files / form useCombobox-6-13.ts

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     import type {
      AriaAttributes,
      FocusEventHandler,
      InputHTMLAttributes,
      KeyboardEventHandler,
      MouseEventHandler,
      Ref,
      RefCallback,
      RefObject,
    } from "react";
    import {
      isSearchableEvent,
      KeyboardMovementProviderImplementation,
      useKeyboardMovementProvider,
    } from "../movement";
    import type { UseStateInitializer, UseStateSetter } from "../types";
    import { useEnsuredId } from "../useEnsuredId";
    import { useEnsuredRef } from "../useEnsuredRef";
    import { useToggle } from "../useToggle";
    import { tryToSubmitRelatedForm } from "./utils";

    const noop = (): void => {
      // do nothing
    };

    export type SupportedComboboxPopup = "listbox" | "grid" | "dialog";

    export interface ComboboxOptions<
      ComboboxEl extends HTMLElement = HTMLInputElement,
      PopupEl extends HTMLElement = HTMLElement
    > {
      /**
       * This is the {@link InputHTMLAttributes.form} attribute and is used to
       * attempt submitting a form when the enter key is pressed.
       */
      form?: string;

      /**
       * @defaultValue `"combobox-popup-" + useId()`
       */
      popupId?: string;
      popupRef?: Ref<PopupEl>;

      /**
       * @defaultValue `"combobox-" + useId()`
       */
      comboboxId?: string;

      comboboxRef?: Ref<ComboboxEl>;

      /**
       * @defaultValue `"listbox"`
       */
      popup?: "listbox" | "grid" | "dialog";

      /**
       * Used to determine the keyboard completion behavior with the {@link popup}
       * type:
       *
       * - `"none"` - applies `aria-autocomplete="none"` and focusing options does
       *   not update the value automatically. the user must select an option with
       *   enter
       * - `"list"` - applies `aria-autocomplete="list"` and focusing options
       *   immediately updates the value
       * - `"both"` - applies `aria-autocomplete="both"`, focusing options
       *   immediately updates the value, and typing will attempt to autocomplete
       *   the rest of the match inline using selection ranges
       * - `"select"` - acts as a `<select>` element and is **not editable**.
       *
       * @defaultValue `"list"`
       */
      autocomplete?: "none" | "list" | "both" | "select";

      onClick?: MouseEventHandler<ComboboxEl>;
      onFocus?: FocusEventHandler<ComboboxEl>;
      onKeyDown?: KeyboardEventHandler<ComboboxEl>;

      /**
       * @defaultValue `false`
       */
      disabled?: boolean;

      /**
       * @defaultValue `false`
       */
      disableShowOnFocus?: boolean;

      /**
       * @defaultValue `false`
       */
      defaultVisible?: UseStateInitializer<boolean>;
    }

    export interface ComboboxWidgetProps<
      ComboboxEl extends HTMLElement = HTMLInputElement
    > {
      "aria-haspopup": SupportedComboboxPopup;
      "aria-expanded": boolean;
      "aria-autocomplete"?: AriaAttributes["aria-autocomplete"];
      id: string;
      ref: RefCallback<ComboboxEl>;
      role: "combobox";
      onClick: MouseEventHandler<ComboboxEl>;
      onFocus: FocusEventHandler<ComboboxEl>;
      onKeyDown: KeyboardEventHandler<ComboboxEl>;
    }

    export interface ComboboxWidgetPopupProps<
      PopupEl extends HTMLElement = HTMLElement
    > {
      "aria-labelledby": string;
      id: string;
      ref: RefCallback<PopupEl>;
      role: "listbox" | "dialog" | "grid";
    }

    export interface ComboboxImplementation<
      ComboboxEl extends HTMLElement = HTMLInputElement,
      PopupEl extends HTMLElement = HTMLElement
    > extends KeyboardMovementProviderImplementation<ComboboxEl> {
      show(): void;
      hide(): void;
      visible: boolean;
      setVisible: UseStateSetter<boolean>;
      popupRef: RefObject<PopupEl>;
      popupProps: ComboboxWidgetPopupProps<PopupEl>;
      comboboxRef: RefObject<ComboboxEl>;
      comboboxProps: ComboboxWidgetProps<ComboboxEl>;
    }

    export function useCombobox<
      ComboboxEl extends HTMLElement = HTMLInputElement,
      PopupEl extends HTMLElement = HTMLElement
    >(
      options: ComboboxOptions<ComboboxEl, PopupEl> = {}
    ): ComboboxImplementation<ComboboxEl, PopupEl> {
      const {
        form,
        autocomplete = "list",
        popup = "listbox",
        onClick = noop,
        onFocus = noop,
        onKeyDown = noop,
        disabled = false,
        comboboxId: propComboboxId,
        comboboxRef: propComboboxRef,
        popupId: propPopupId,
        popupRef: propPopupRef,
        defaultVisible = false,
        disableShowOnFocus = autocomplete === "select",
      } = options;
      const isSelect = autocomplete === "select";

      const {
        toggled: visible,
        enable: show,
        disable: hide,
        setToggled: setVisible,
      } = useToggle(defaultVisible);
      const popupId = useEnsuredId(propPopupId, "combobox-popup");
      const comboboxId = useEnsuredId(propComboboxId, "combobox");
      const [comboboxRef, comboboxRefCallback] = useEnsuredRef(propComboboxRef);
      const [popupRef, popupRefCallback] = useEnsuredRef(propPopupRef);
      const {
        movementProps,
        movementContext,
        currentFocusIndex,
        setActiveDescendantId,
      } = useKeyboardMovementProvider<ComboboxEl>({
        onFocus(event) {
          onFocus(event);
          if (disableShowOnFocus) {
            return;
          }

          show();
        },
        onClick(event) {
          onClick(event);
          // if (disabled || !isSelect) {
          if (disabled) {
            return;
          }

          // this was called so that the menu doesn't automatically close
          event.stopPropagation();
          show();
        },
        onKeyDown(event) {
          onKeyDown(event);
          if (disabled) {
            return;
          }

          if (visible) {
            if (event.key === "Escape" || event.key === "Tab") {
              event.stopPropagation();
              hide();
            }

            return;
          }

          if (isSearchableEvent(event)) {
            // event.stopPropagation();

            // const nextIndex = findMatchIndex({
            //   value: event.key,
            //   values: searchValues,
            //   startIndex: event.shiftKey ? -1 : currentIndex,
            // });

            // if (nextIndex !== -1) {
            //   triggerManualChangeEvent(inputRef.current, options[nextIndex].value);
            // }
            return;
          }

          switch (event.key) {
            case " ":
              event.preventDefault();
              event.stopPropagation();
              show();
              break;
            case "Enter":
              tryToSubmitRelatedForm(event, form);
              break;
            case "Home":
              event.preventDefault();
              event.stopPropagation();
              // if (currentIndex !== 0) {
              //   triggerManualChangeEvent(inputRef.current, options[0].value);
              // }
              break;
            case "End":
              event.preventDefault();
              event.stopPropagation();
              // if (currentIndex !== totalOptions) {
              //   triggerManualChangeEvent(
              //     inputRef.current,
              //     options[totalOptions].value
              //   );
              // }
              break;
            case "ArrowDown":
            case "ArrowUp": {
              event.preventDefault();
              event.stopPropagation();

              // const increment = event.key === "ArrowDown";
              // if (currentIndex === -1 && !increment) {
              //   // this matches the native select behavior where it will do
              //   // nothing if there is no current value
              //   return;
              // }

              // const nextIndex = loop({
              //   max: totalOptions,
              //   value: currentIndex,
              //   minmax: true,
              //   increment,
              // });

              // triggerManualChangeEvent(inputRef.current, options[nextIndex].value);
              break;
            }
          }
        },
        loopable: false,
        searchable: isSelect,
        programmatic: true,
        includeDisabled: false,
        tabIndexBehavior: "virtual",
        // getDefaultFocusedIndex(focusOptions) {
        //   if (typeof menuProps.getDefaultFocusedIndex === "function") {
        //     return menuProps.getDefaultFocusedIndex(focusOptions);
        //   }

        //   const val = typeof value === "undefined" ? currentValue : value;
        //   return options.findIndex((option) => option.value === val);
        // },
        // getFocusableElements() {
        //   const menu = menuRef.current;
        //   if (!menu) {
        //     return [];
        //   }

        //   return [
        //     ...menu.querySelectorAll<HTMLLIElement>(
        //       '[role="option"]:not([aria-disabled])'
        //     ),
        //   ];
        // },
      });

      return {
        show,
        hide,
        visible,
        setVisible,
        popupRef,
        popupProps: {
          "aria-labelledby": comboboxId,
          id: popupId,
          ref: popupRefCallback,
          role: popup,
        },
        comboboxRef,
        comboboxProps: {
          ...movementProps,
          "aria-haspopup": popup,
          "aria-expanded": visible,
          "aria-autocomplete": autocomplete === "select" ? undefined : autocomplete,
          id: comboboxId,
          ref: comboboxRefCallback,
          role: "combobox",
        },
        movementProps,
        movementContext,
        currentFocusIndex,
        setActiveDescendantId,
      };
    }