/**
 * ZUI Component
 * Base component class for all ZUI components
 */
import type { BaseProps, ComponentInstance, LayoutProps, Rect, Widget, WidgetOptions, WidgetType, Padding, PaddingInput, EventCallback } from './types';
import { EventEmitter } from './EventEmitter';
/**
 * Normalize padding input to full Padding object
 */
export declare function normalizePadding(input?: PaddingInput): Padding;
/**
 * Abstract base component class
 */
export declare abstract class Component<P extends BaseProps = BaseProps> implements ComponentInstance {
    readonly id: string;
    abstract readonly type: string;
    protected _props: P;
    protected _children: Component[];
    protected _parent: Component | null;
    protected _widgets: Widget[];
    protected _rect: Rect;
    protected _mounted: boolean;
    protected _events: EventEmitter;
    constructor(props: P);
    /**
     * Get default props for the component
     */
    protected getDefaultProps(): Partial<P>;
    /**
     * Get current props
     */
    get props(): P;
    /**
     * Get child components
     */
    get children(): Component[];
    /**
     * Get parent component
     */
    get parent(): Component | null;
    /**
     * Get underlying widgets
     */
    get widgets(): Widget[];
    /**
     * Check if component is mounted
     */
    get isMounted(): boolean;
    /**
     * Get computed layout rect
     */
    getRect(): Rect;
    /**
     * Set component rect
     */
    setRect(rect: Partial<Rect>): void;
    /**
     * Update component props
     */
    setProps(newProps: Partial<P>): void;
    /**
     * Add a child component
     */
    addChild(child: Component): void;
    /**
     * Remove a child component
     */
    removeChild(child: Component): void;
    /**
     * Remove all children
     */
    clearChildren(): void;
    /**
     * Mount the component and its children
     */
    mount(parentRect?: Rect): void;
    /**
     * Update the component
     */
    update(): void;
    /**
     * Destroy and cleanup component
     */
    destroy(): void;
    /**
     * Subscribe to component events
     */
    on<T = unknown>(event: string, callback: EventCallback<T>): () => void;
    /**
     * Emit a component event
     */
    protected emit<T = unknown>(event: string, data?: T): void;
    /**
     * Calculate component layout based on props and parent rect
     */
    protected abstract calculateLayout(parentRect?: Rect): void;
    /**
     * Create ZeppOS widgets for this component
     */
    protected abstract createWidgets(): void;
    /**
     * Update existing widgets with new prop values
     */
    protected abstract updateWidgets(): void;
    /**
     * Destroy ZeppOS widgets
     */
    protected abstract destroyWidgets(): void;
    /**
     * Called when component is mounted
     */
    protected onMount(): void;
    /**
     * Called when component is destroyed
     */
    protected onDestroy(): void;
    /**
     * Called when props change
     */
    protected onPropsChanged(_newProps: P, _prevProps: P): void;
    /**
     * Called when a child is added
     */
    protected onChildAdded(_child: Component): void;
    /**
     * Called when a child is removed
     */
    protected onChildRemoved(_child: Component): void;
    /**
     * Update widget positions after rect change
     */
    protected updateWidgetPositions(): void;
}
/**
 * Props interface for components with layout capabilities
 */
export interface LayoutComponentProps extends BaseProps, LayoutProps {
    children?: Component[];
}
/**
 * Base class for layout components
 */
export declare abstract class LayoutComponent<P extends LayoutComponentProps = LayoutComponentProps> extends Component<P> {
    constructor(props: P);
    protected getDefaultProps(): Partial<P>;
}
/**
 * Widget type mapping
 */
export declare const WIDGET_TYPES: Record<WidgetType, number>;
/**
 * Create a ZeppOS widget
 */
export declare function createWidget(type: WidgetType, options: WidgetOptions): Widget;
/**
 * Delete a ZeppOS widget
 */
export declare function deleteWidget(widget: Widget): void;
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