import { DfInputComponent, DfOutputComponent } from './components/connectors';
import * as i0 from "@angular/core";
/**
 * Base abstract class for DrawFlow nodes.
 * Provides common functionality and structure for all node types in the flow diagram.
 */
export declare abstract class DrawFlowBaseNode {
    private readonly cdr;
    /**
     * Collection of input connectors for this node.
     * Accessible from outside to monitor changes in the number of inputs.
     */
    readonly inputs: import("@angular/core").Signal<readonly DfInputComponent[]>;
    /**
     * Collection of output connectors for this node.
     * Accessible from outside to monitor changes in the number of outputs.
     */
    readonly outputs: import("@angular/core").Signal<readonly DfOutputComponent[]>;
    readonly connectorsUpdated: import("@angular/core").OutputEmitterRef<void>;
    /**
     * Unique identifier for the node.
     * Can be used to create connector names in format `${nodeId}-${uniqConnectorId}`.
     * @default ''
     */
    readonly nodeIdSignal: import("@angular/core").InputSignal<string>;
    /**
     * Metadata for the node.
     * Contains type information and other node-specific data.
     */
    readonly modelSignal: import("@angular/core").InputSignal<Record<string, any> & {
        type: string;
    }>;
    /**
     * Indicates if this node is a starting node in the flow.
     * Can be used to apply special styling or behavior for start nodes.
     * @default false
     */
    readonly startNodeSignal: import("@angular/core").InputSignal<boolean>;
    /**
     * Indicates if this node is an ending node in the flow.
     * Can be used to hide output connectors or apply special styling.
     * @default false
     */
    readonly endNodeSignal: import("@angular/core").InputSignal<boolean>;
    /**
     * Selection state of the node.
     * Changes when the node is clicked or deselected.
     * The editor applies the visual state to the node wrapper.
     * @default false
     */
    readonly selectedSignal: import("@angular/core").InputSignal<boolean>;
    /**
     * Validation state of the node.
     * Supplied by graph validators. Override `invalidState` to combine
     * this input with local validation before the editor styles the wrapper.
     * @default false
     */
    readonly invalidSignal: import("@angular/core").InputSignal<boolean>;
    /** Form-level disabled state. Custom node controls may bind to this explicitly. */
    readonly disabledSignal: import("@angular/core").InputSignal<boolean>;
    /** Form-level readonly state. Custom node controls may bind to this explicitly. */
    readonly readonlySignal: import("@angular/core").InputSignal<boolean>;
    get nodeId(): string;
    get model(): Record<string, any> & {
        type: string;
    };
    get startNode(): boolean;
    get endNode(): boolean;
    get selected(): boolean;
    get invalid(): boolean;
    get disabled(): boolean;
    get readonly(): boolean;
    markForCheck(): void;
    /**
     * Effective validation state read by the editor wrapper.
     * Override to combine graph validation with local component state,
     * for example when a form inside the node is invalid.
     */
    protected get invalidState(): boolean;
    static ɵfac: i0.ɵɵFactoryDeclaration<DrawFlowBaseNode, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<DrawFlowBaseNode, never, never, { "nodeIdSignal": { "alias": "nodeId"; "required": false; "isSignal": true; }; "modelSignal": { "alias": "model"; "required": true; "isSignal": true; }; "startNodeSignal": { "alias": "startNode"; "required": false; "isSignal": true; }; "endNodeSignal": { "alias": "endNode"; "required": false; "isSignal": true; }; "selectedSignal": { "alias": "selected"; "required": false; "isSignal": true; }; "invalidSignal": { "alias": "invalid"; "required": false; "isSignal": true; }; "disabledSignal": { "alias": "disabled"; "required": false; "isSignal": true; }; "readonlySignal": { "alias": "readonly"; "required": false; "isSignal": true; }; }, { "connectorsUpdated": "connectorsUpdated"; }, never, never, true, never>;
}