import { IFileEntry } from '../lib/directory-reader';
export type FileTypeFilter = 'files' | 'directories' | 'all';
export type FilePickerMode = 'loading' | 'browsing' | 'filtering' | 'error';
export type FilePickerState = {
    currentPath: string;
    pathHistory: string[];
    entries: IFileEntry[];
    focusedIndex: number;
    selectedPaths: ReadonlySet<string>;
    previousSelectedPaths: ReadonlySet<string>;
    multiSelect: boolean;
    fileTypes: FileTypeFilter;
    showHidden: boolean;
    showDetails: boolean;
    mode: FilePickerMode;
    filterText: string;
    filteredEntries: IFileEntry[];
    maxHeight: number;
    viewportFrom: number;
    viewportTo: number;
    errorMessage?: string;
};
export type FilePickerAction = {
    type: 'focus-next';
} | {
    type: 'focus-previous';
} | {
    type: 'focus-first';
} | {
    type: 'focus-last';
} | {
    type: 'select';
} | {
    type: 'toggle-select';
} | {
    type: 'go-parent';
} | {
    type: 'enter-directory';
} | {
    type: 'enter-filter-mode';
} | {
    type: 'exit-filter-mode';
} | {
    type: 'filter-insert';
    text: string;
} | {
    type: 'filter-delete';
} | {
    type: 'set-entries';
    path: string;
    entries: IFileEntry[];
} | {
    type: 'set-loading';
} | {
    type: 'set-error';
    error: string;
} | {
    type: 'retry';
} | {
    type: 'reset';
    state: FilePickerState;
};
export declare function filePickerReducer(state: FilePickerState, action: FilePickerAction): FilePickerState;
export declare function createDefaultFilePickerState(options: {
    initialPath?: string;
    multiSelect?: boolean;
    fileTypes?: FileTypeFilter;
    showHidden?: boolean;
    showDetails?: boolean;
    maxHeight?: number;
}): FilePickerState;
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