import { LitElement, type PropertyValues } from 'lit';
import type { AttachmentStatus, AttachmentPurpose } from '../../types/index.js';
/**
 * @tag loquix-attachment-chip
 * @summary Displays a single file attachment with icon, name, size, remove/retry actions, and error tooltip.
 *
 * @slot icon - Custom icon/preview content. Overrides both `preview` URL and auto-detected emoji icon.
 *
 * @csspart chip - The chip container
 * @csspart icon - The icon/preview area
 * @csspart remove - The remove button
 * @csspart retry - The retry button
 * @csspart error-tooltip - The error tooltip popover
 *
 * @cssprop [--loquix-attachment-chip-bg=rgba(0,0,0,0.04)] - Chip background
 * @cssprop [--loquix-attachment-chip-border-color=rgba(0,0,0,0.08)] - Chip border color
 * @cssprop [--loquix-attachment-chip-border-radius=8px] - Chip border radius
 * @cssprop [--loquix-attachment-chip-color=inherit] - Chip text color
 * @cssprop [--loquix-attachment-chip-padding=6px 10px] - Chip padding
 * @cssprop [--loquix-attachment-chip-font-size=0.8125rem] - Chip font size
 * @cssprop [--loquix-attachment-chip-progress-color] - Upload progress bar color
 * @cssprop [--loquix-attachment-chip-progress-sweep-bg] - Sweep highlight gradient (set to `none` to disable)
 * @cssprop [--loquix-attachment-chip-progress-sweep] - Sweep animation shorthand (set to `none` to disable)
 * @cssprop [--loquix-attachment-chip-error-color] - Error state color
 * @cssprop [--loquix-attachment-chip-filename-max-width] - Max width for filename (CSS, overridden by max-filename-length)
 * @cssprop [--loquix-attachment-chip-preview-size=28px] - Preview thumbnail size
 * @cssprop [--loquix-attachment-chip-preview-radius=4px] - Preview thumbnail border radius
 *
 * @fires loquix-attachment-remove - Fired when the remove button is clicked. Detail: { attachment }
 * @fires loquix-attachment-retry - Fired when the retry button is clicked on an errored chip. Detail: { attachment }
 */
export declare class LoquixAttachmentChip extends LitElement {
    static styles: import("lit").CSSResult[];
    private _localize;
    /** Display filename */
    filename: string;
    /** MIME type or extension shorthand (e.g. 'image/png', 'pdf', 'ts') */
    filetype: string;
    /** File size in bytes */
    size: number;
    /** Semantic purpose of this attachment */
    purpose: AttachmentPurpose | undefined;
    /** Whether the chip can be removed */
    removable: boolean;
    /** Upload/processing status */
    status: AttachmentStatus;
    /** Upload progress 0-100 */
    progress: number;
    /** Unique attachment id (used in events) */
    attachmentId: string;
    /** Error message (shown in tooltip when status is 'error') */
    error: string;
    /** Max filename length before truncation (0 = no limit, uses CSS text-overflow) */
    maxFilenameLength: number;
    /** Hides the retry button on error state */
    noRetry: boolean;
    /** URL for a thumbnail preview image (shown instead of the auto emoji icon) */
    preview: string;
    private _tooltipEl;
    /**
     * Sanitised preview URL — allows blob:, https:, http: protocols.
     * For data: URLs, only `data:image/*` is permitted (excluding `data:image/svg+xml`
     * which can contain executable scripts).
     */
    private get _safePreviewUrl();
    /** Captured chip width before a status change re-render */
    private _prevWidth;
    /** Timer id for deferred cleanup after width transition */
    private _widthTimer;
    disconnectedCallback(): void;
    protected willUpdate(changed: PropertyValues): void;
    protected firstUpdated(): void;
    protected updated(changed: PropertyValues): void;
    private get _attachment();
    private _formatSize;
    private _getFileIcon;
    /** Truncate filename preserving extension: "very-long-name.pdf" → "very-lo…me.pdf" */
    private _truncateFilename;
    private _handleRemove;
    private _handleRetry;
    private _showErrorTooltip;
    private _hideErrorTooltip;
    private _closeSvg;
    private _errorSvg;
    private _retrySvg;
    private _getStatusLabel;
    protected render(): import("lit").TemplateResult<1>;
}
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