import { CanvasColour, DefaultConnectionColors, INodeInputSlot, INodeOutputSlot, INodeSlot, OptionalProps, Point, ReadOnlyPoint } from '../interfaces';
import { LGraphNode } from '../LGraphNode';
import { SubgraphInput } from '../subgraph/SubgraphInput';
import { SubgraphOutput } from '../subgraph/SubgraphOutput';
import { LabelPosition } from '../draw';
import { SlotBase } from './SlotBase';
export interface IDrawOptions {
    colorContext: DefaultConnectionColors;
    labelPosition?: LabelPosition;
    lowQuality?: boolean;
    doStroke?: boolean;
    highlight?: boolean;
}
/** Shared base class for {@link LGraphNode} input and output slots. */
export declare abstract class NodeSlot extends SlotBase implements INodeSlot {
    #private;
    pos?: Point;
    /** The center point of this slot when the node is collapsed. */
    abstract get collapsedPos(): ReadOnlyPoint;
    get node(): LGraphNode;
    get highlightColor(): CanvasColour;
    abstract get isWidgetInputSlot(): boolean;
    constructor(slot: OptionalProps<INodeSlot, "boundingRect">, node: LGraphNode);
    /**
     * Whether this slot is a valid target for a dragging link.
     * @param fromSlot The slot that the link is being connected from.
     */
    abstract isValidTarget(fromSlot: INodeInputSlot | INodeOutputSlot | SubgraphInput | SubgraphOutput): boolean;
    /**
     * The label to display in the UI.
     */
    get renderingLabel(): string;
    draw(ctx: CanvasRenderingContext2D, { colorContext, labelPosition, lowQuality, highlight, doStroke, }: IDrawOptions): void;
    drawCollapsed(ctx: CanvasRenderingContext2D): void;
}