import * as Blockly from "blockly";
import { FieldDropdown } from "./field_dropdown";
import { PointerCoords, UserInputAction } from "./field_utils";
export declare abstract class FieldDropdownGrid extends FieldDropdown {
    isFieldCustom_: boolean;
    protected width_: number;
    protected columns_: number;
    protected maxRows_: number;
    protected backgroundColour_: string;
    protected borderColour_: string;
    protected activeDescendantIndex: number | undefined;
    protected gridItems: HTMLDivElement[];
    protected openingPointerCoords: PointerCoords | undefined;
    protected lastUserInputAction: UserInputAction | undefined;
    protected keyDownBinding: Blockly.browserEvents.Data | null;
    protected pointerMoveBinding: Blockly.browserEvents.Data | null;
    /**
     * Callback for when a grid item is clicked inside the dropdown or widget div.
     * Should be bound to the FieldIconMenu.
     * @param {string | null} value the value to set for the field
     * @protected
     */
    protected abstract buttonClickAndClose_(value: string | null): void;
    /**
     * Callback for when a grid item is highlighted using keyboard navigation.
     * Use this method to classNames for grid items and scroll to the highlighted item if required.
     * @param {HTMLElement} gridItemContainer the HTMLElement containing the grid items
     * @protected
     */
    protected abstract setFocusedItem_(gridItemContainer: HTMLElement): void;
    private setFocusedItem;
    /**
     * Set openingPointerCoords if the Event is a PointerEvent.
     * @param {Event} e the event that triggered showEditor_
     * @protected
     */
    protected setOpeningPointerCoords(e: Event): void;
    protected addKeyDownHandler(gridItemContainer: HTMLElement): void;
    protected addPointerListener(parentDiv: HTMLElement): void;
    protected pointerMoveTriggeredByUser(): boolean;
    protected pointerOutTriggeredByUser(): boolean;
    protected disposeGrid(): void;
}