export declare function defineSchismElements(registry?: CustomElementRegistry): void;

export declare type Direction = "horizontal" | "vertical";

export declare interface PaneConstraints {
    minSize?: number;
    maxSize?: number;
    defaultSize?: number;
    collapsible?: boolean;
    collapsedSize?: number;
}

export declare interface PaneGroupStorage {
    getItem: (name: string) => string | null;
    setItem: (name: string, value: string) => void;
}

export declare interface PaneRecord {
    id: string;
    order: number | undefined;
    constraints: PaneConstraints;
    element: HTMLElement;
}

export declare class SchismGroupElement extends HTMLElement {
    #private;
    static get observedAttributes(): string[];
    groupId: string;
    storage: PaneGroupStorage;
    constructor();
    connectedCallback(): void;
    disconnectedCallback(): void;
    attributeChangedCallback(name: string): void;
    get direction(): Direction;
    getLayout(): number[];
    setLayout(next: number[]): void;
    getPaneSize(p: SchismPaneElement): number;
    resizePane(p: SchismPaneElement, percent: number): void;
    collapsePane(p: SchismPaneElement): void;
    expandPane(p: SchismPaneElement, toSize?: number): void;
}

/**
 * `<schism-pane>` — a single pane within a `<schism-group>`.
 *
 * Attributes:
 *   min-size       e.g. "20%" or "240px" (default 0%)
 *   max-size       e.g. "80%" or "600px" (default 100%)
 *   default-size   initial size; remainder split evenly when omitted
 *   collapsible    boolean
 *   collapsed-size size while collapsed (default 0)
 *   order          integer; influences position when conditionally rendered
 */
export declare class SchismPaneElement extends HTMLElement {
    #private;
    static get observedAttributes(): string[];
    paneId: string;
    constructor();
    connectedCallback(): void;
    disconnectedCallback(): void;
    attributeChangedCallback(): void;
    collapse(): void;
    expand(toSize?: number): void;
    resize(percent: number): void;
    getSize(): number;
    isCollapsed(): boolean;
    isExpanded(): boolean;
}

/**
 * `<schism-resizer>` — drag handle / keyboard separator between two panes.
 *
 * Attributes:
 *   disabled   boolean — drag/keyboard disabled
 *   tabindex   defaults to 0; set manually to skip
 */
export declare class SchismResizerElement extends HTMLElement {
    #private;
    static get observedAttributes(): string[];
    resizerId: string;
    constructor();
    connectedCallback(): void;
    disconnectedCallback(): void;
    attributeChangedCallback(name: string): void;
}

export { }