import type { TextTriggerItem, TextTriggerOptions } from './text-trigger-types.ts';
/**
 * Base class for trigger-char-at-caret → popover → select → action pattern.
 *
 * Subclasses provide identity (trigger char, event prefix, data attribute)
 * and optional customization (tag text format, tag styling, option rendering).
 *
 * Used by SlashCommandController (`/`) and MentionController (`@`).
 */
export declare abstract class TextTriggerController {
    #private;
    readonly host: HTMLElement;
    protected abstract get triggerChar(): string;
    protected abstract get eventPrefix(): string;
    protected abstract get dataAttribute(): string;
    /** Format the text displayed inside an inserted tag. Default: `{trigger}{item.value}`. */
    protected formatTagText(item: TextTriggerItem): string;
    /** Apply inline styles to an inserted tag element. Override for custom styling. */
    protected styleTag(tag: HTMLElement, _item: TextTriggerItem): void;
    /** Render content inside a listbox option. Override for custom rendering (e.g. avatars). */
    protected renderOptionContent(option: HTMLElement, item: TextTriggerItem): void;
    /** Keyboard shortcut key for Cmd/Ctrl+{key} toggle. Return null for no shortcut. */
    protected get keyboardShortcut(): string | null;
    constructor(host: HTMLElement, options: TextTriggerOptions);
    get items(): TextTriggerItem[];
    set items(val: TextTriggerItem[]);
    get open(): boolean;
    destroy(): void;
}
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