import type { CSSResultGroup, PropertyValues } from 'lit';
import SynergyElement from '../../internal/synergy-element.js';
import SynIcon from '../icon/icon.component.js';
import SynPopup from '../popup/popup.component.js';
import type { SynergyFormControl } from '../../internal/synergy-element.js';
import SynOption from '../option/option.component.js';
import { type OptionRenderer } from './option-renderer.js';
/**
 * @summary Comboboxes allow you to choose items from a menu of predefined options.
 * @documentation https://synergy-design-system.github.io/?path=/docs/components-syn-combobox--docs
 * @status stable
 *
 * @dependency syn-icon
 * @dependency syn-popup
 *
 * @slot - The listbox options. Must be `<syn-option>` elements.
 *    You can use `<syn-optgroup>`'s to group items visually.
 * @slot label - The combobox's label. Alternatively, you can use the `label` attribute.
 * @slot prefix - Used to prepend a presentational icon or similar element to the combobox.
 * @slot suffix - Used to append a presentational icon or similar element to the combobox.
 * @slot clear-icon - An icon to use in lieu of the default clear icon.
 * @slot expand-icon - The icon to show when the control is expanded and collapsed.
 *    Rotates on open and close.
 * @slot help-text - Text that describes how to use the combobox.
 *    Alternatively, you can use the `help-text` attribute.
 *
 * @event syn-change - Emitted when the control's value changes.
 * @event syn-clear - Emitted when the control's value is cleared.
 * @event syn-input - Emitted when the control receives input.
 * @event syn-focus - Emitted when the control gains focus.
 * @event syn-blur - Emitted when the control loses focus.
 * @event syn-show - Emitted when the combobox's menu opens.
 * @event syn-after-show - Emitted after the combobox's menu opens and all animations are complete.
 * @event syn-hide - Emitted when the combobox's menu closes.
 * @event syn-after-hide - Emitted after the combobox's menu closes and all animations are complete.
 * @event syn-invalid - Emitted when the form control has been checked for validity
 *    and its constraints aren't satisfied.
 * @event syn-error - Emitted when the combobox menu fails to open.
 *
 * @csspart form-control - The form control that wraps the label, combobox, and help text.
 * @csspart form-control-label - The label's wrapper.
 * @csspart form-control-input - The combobox's wrapper.
 * @csspart form-control-help-text - The help text's wrapper.
 * @csspart combobox - The container the wraps the prefix, combobox, clear icon, and expand button.
 * @csspart prefix - The container that wraps the prefix slot.
 * @csspart suffix - The container that wraps the suffix slot.
 * @csspart display-input - The element that displays the selected option's label,
 *     an `<input>` element.
 * @csspart listbox - The listbox container where the options are slotted
 *   and the filtered options list exists.
 * @csspart filtered-listbox - The container that wraps the filtered options.
 * @csspart clear-button - The clear button.
 * @csspart expand-icon - The container that wraps the expand icon.
 * @csspart popup - The popup's exported `popup` part.
 * Use this to target the tooltip's popup container.
 *
 * @animation combobox.show - The animation to use when showing the combobox.
 * @animation combobox.hide - The animation to use when hiding the combobox.
 */
export default class SynCombobox extends SynergyElement implements SynergyFormControl {
    static styles: CSSResultGroup;
    static dependencies: {
        'syn-icon': typeof SynIcon;
        'syn-popup': typeof SynPopup;
    };
    private readonly formControlController;
    private readonly hasSlotController;
    private readonly localize;
    private closeWatcher;
    /** The last value of a syn-option, that was selected by click or via keyboard navigation */
    private lastOptionValue;
    private isOptionRendererTriggered;
    private isInitialized;
    popup: SynPopup;
    combobox: HTMLSlotElement;
    displayInput: HTMLInputElement;
    valueInput: HTMLInputElement;
    listbox: HTMLSlotElement;
    private defaultSlot;
    private hasFocus;
    displayLabel: string;
    selectedOption: SynOption | undefined;
    numberFilteredOptions: number;
    cachedOptions: SynOption[];
    /** The name of the combobox, submitted as a name/value pair with form data. */
    name: string;
    /**
     * The current value of the combobox, submitted as a name/value pair with form data.
     */
    value: string;
    /** The default value of the form control. Primarily used for resetting the form control. */
    defaultValue: string;
    /** The combobox's size. */
    size: 'small' | 'medium' | 'large';
    /** Placeholder text to show as a hint when the combobox is empty. */
    placeholder: string;
    /** Disables the combobox control. */
    disabled: boolean;
    /** Adds a clear button when the combobox is not empty. */
    clearable: boolean;
    /**
     * Indicates whether or not the combobox is open.
     * You can toggle this attribute to show and hide the listbox, or you can use the `show()`
     * and `hide()` methods and this attribute will reflect the combobox's open state.
     */
    open: boolean;
    /**
     * Enable this option to prevent the listbox from being clipped,
     * when the component is placed inside a container with `overflow: auto|scroll`.
     * Hoisting uses a fixed positioning strategy that works in many, but not all, scenarios.
     */
    hoist: boolean;
    /** The combobox's label. If you need to display HTML, use the `label` slot instead. */
    label: string;
    /**
     * The preferred placement of the combobox's menu.
     * Note that the actual placement may vary as needed to keep the listbox inside of the viewport.
     */
    placement: 'top' | 'bottom';
    /** The combobox's help text. If you need to display HTML, use the `help-text` slot instead. */
    helpText: string;
    /**
     * By default, form controls are associated with the nearest containing `<form>` element.
     * This attribute allows you to place the form control outside of a form and associate it
     * with the form that has this `id`.
     * The form must be in the same document or shadow root for this to work.
     */
    form: string;
    /** The combobox's required attribute. */
    required: boolean;
    /**
     * A function that customizes the rendered option. The first argument is the option, the second
     * is the query string, which is typed into the combobox.
     * The function should return either a Lit TemplateResult or a string containing trusted HTML
     * to render in the shown list of filtered options.
     * If the query string should be highlighted use the `highlightOptionRenderer` function.
     */
    getOption: OptionRenderer;
    /**
     * A function used to filter options in the combobox component.
     * The default filter method is a case- and diacritic-insensitive string comparison.
     *
     * @param option - The option to be filtered.
     * @param queryString - The query string used for filtering.
     * @returns A boolean indicating whether the option should be included in the filtered results.
     */
    filter: (option: SynOption, queryString: string) => boolean;
    /** Gets the validity state object */
    get validity(): ValidityState;
    /** Gets the validation message */
    get validationMessage(): string;
    connectedCallback(): void;
    firstUpdated(): void;
    protected willUpdate(changedProperties: PropertyValues): void;
    private addOpenListeners;
    private removeOpenListeners;
    private handleFocus;
    private handleBlur;
    private handleDocumentFocusIn;
    private handleDocumentKeyDown;
    private handleDocumentMouseDown;
    private handleLabelClick;
    private handleComboboxMouseDown;
    private handleComboboxKeyDown;
    private handleClearClick;
    private clearCombobox;
    private preventLoosingFocus;
    private handleOptionClick;
    /**
     * Selects the following or previous option.
     *
     * @param isNext - A boolean indicating whether to select the following option (true)
     *                 or the previous option (false).
     */
    private selectNextOption;
    private getAllFilteredOptions;
    private getCurrentOption;
    private setCurrentOption;
    /**
     * Updates the selected options cache, the current value, and the display value
     */
    private setSelectedOption;
    private handleInvalid;
    handlePropertiesChange(): void;
    handleDisabledChange(): void;
    handleValueChange(): void;
    handleOpenChange(): Promise<void>;
    /**
     * Shows the listbox. If it is not possible to open the listbox, because there are no
     * appropriate filtered options, a syn-error is emitted and the listbox stays closed.
     */
    show(): Promise<void>;
    /** Hides the listbox. */
    hide(): Promise<void>;
    /**
     * Checks for validity but does not show a validation message.
     * Returns `true` when valid and `false` when invalid.
     */
    checkValidity(): boolean;
    /** Gets the associated form, if one exists. */
    getForm(): HTMLFormElement | null;
    /** Checks for validity and shows the browser's validation message if the control is invalid. */
    reportValidity(): boolean;
    /** Sets a custom validation message. Pass an empty string to restore validity. */
    setCustomValidity(message: string): void;
    /** Sets focus on the control. */
    focus(options?: FocusOptions): void;
    /** Removes focus from the control. */
    blur(): void;
    private createComboboxOptionsFromQuery;
    private handleInput;
    private handleChange;
    private getSlottedOptions;
    private getSlottedOptGroups;
    private cacheSlottedOptionsAndOptgroups;
    private updateSelectedOptionFromValue;
    handleDefaultSlotChange(): void;
    render(): import("lit").TemplateResult<1>;
}