/**
 * gridstack-item.component.ts 13.0.0
 * Copyright (c) 2022-2024 Alain Dumesny - see GridStack root license
 */
/**
 * Abstract base class that all custom widgets should extend.
 *
 * This class provides the interface needed for GridstackItemComponent to:
 * - Serialize/deserialize widget data
 * - Save/restore widget state
 * - Integrate with Angular lifecycle
 *
 * Extend this class when creating custom widgets for dynamic grids.
 *
 * @example
 * ```typescript
 * @Component({
 *   selector: 'app-my-widget',
 *   template: '<div>{{data}}</div>'
 * })
 * export class MyWidget extends BaseWidget {
 *   data = input(''); // signal input (Angular 17+) — or @Input() data = ''
 *
 *   override serialize() {
 *     return { data: this.data() };
 *   }
 * }
 * // Register so the widget JSON { component: 'app-my-widget', props: { data: 'hello' } } works:
 * GridstackComponent.registerComponents([MyWidget]);
 * ```
 */
import { ComponentRef } from '@angular/core';
import { NgCompInputs, NgGridStackWidget } from './types';
import * as i0 from "@angular/core";
/**
 * Base widget class for GridStack Angular integration.
 */
export declare abstract class BaseWidget {
    /**
     * Complete widget definition including position, size, and Angular-specific data.
     * Populated automatically when the widget is loaded or saved.
     */
    widgetItem?: NgGridStackWidget;
    /** @internal set by GridstackComponent to enable signal-based input support via setInput() */
    _compRef?: ComponentRef<BaseWidget>;
    /**
     * Override this method to return serializable data for this widget.
     *
     * Return an object with properties that map to your component's @Input() fields.
     * The selector is handled automatically, so only include component-specific data.
     *
     * @returns Object containing serializable component data
     *
     * @example
     * ```typescript
     * serialize() {
     *   return {
     *     title: this.title,
     *     value: this.value,
     *     settings: this.settings
     *   };
     * }
     * ```
     */
    serialize(): NgCompInputs | undefined;
    /**
     * Override this method to handle widget restoration from saved data.
     *
     * Use this for complex initialization that goes beyond simple @Input() mapping.
     * The default implementation automatically assigns input data to component properties.
     *
     * @param w The saved widget data including input properties
     *
   * @example
   * ```typescript
   * override deserialize(w: NgGridStackWidget) {
   *   super.deserialize(w); // Call parent for basic setup
   *
   *   // Custom initialization logic
   *   if (w.props?.complexData) {
   *     this.processComplexData(w.props.complexData);
   *   }
   * }
   * ```
     */
    deserialize(w: NgGridStackWidget): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<BaseWidget, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<BaseWidget>;
}