import { ComponentRef, Injector, ViewContainerRef, TemplateRef, Type } from '@angular/core';
import { ModalOverlay } from '../overlay/index';
import { DialogRef } from './dialog-ref';
import { OverlayContext } from '../models/overlay-context';
export declare enum DROP_IN_TYPE {
    alert = 0,
    prompt = 1,
    confirm = 2
}
export declare type WideVCRef = ViewContainerRef | string;
export declare type ContainerContent = string | TemplateRef<any> | Type<any>;
export declare type OverlayPlugin = <T>(component: any, dialogRef: DialogRef<T>, config: OverlayConfig) => DialogRef<any>;
export interface OverlayConfig {
    /**
     * The context for the modal, attached to the dialog instance, DialogRef.context.
     * Default: {}
     */
    context?: OverlayContext;
    injector?: Injector;
    /**
     * The element to block using the modal.
     */
    viewContainer?: WideVCRef;
    renderer?: OverlayRenderer;
    /**
     * Not used yet.
     */
    overlayPlugins?: OverlayPlugin | Array<OverlayPlugin>;
}
export interface ModalComponent<T> {
    dialog: DialogRef<T>;
}
export interface CloseGuard {
    /**
     * Invoked before a modal is dismissed.
     */
    beforeDismiss?(): boolean | Promise<boolean>;
    /**
     * Invoked before a modal is closed.
     */
    beforeClose?(): boolean | Promise<boolean>;
}
export declare abstract class OverlayRenderer {
    abstract render(dialogRef: DialogRef<any>, vcRef: ViewContainerRef, injector?: Injector): ComponentRef<ModalOverlay>;
}