import * as React from "react";
import { EventBus, EventBusSubscriber, FormEventSignal } from "./EventBus";
import { FieldMap, IScopeChild, ErrorMap } from "./types";
import { FieldContext } from "./FieldContext";
export declare type ScopeChild = ListScopeContext | FieldContext | ScopeContext;
export declare const FormScopeConsumer: React.ExoticComponent<React.ConsumerProps<ScopeContext | null>>, FormScopeProvider: React.ProviderExoticComponent<React.ProviderProps<ScopeContext | null>>;
export declare abstract class BaseContext implements IScopeChild {
    protected _parent: null | BaseContext;
    protected _events: EventBus;
    protected _id: string;
    constructor(parentScope?: null | BaseContext);
    /**
     * Returns the top level or root scope of the hierarchy that this scope belongs to.
     * Essentially, this will return the form scope.
     */
    readonly root: BaseContext;
    /**
     * Returns the parent scope of this scope or null if no parent scope exists and this
     * is the top level scope.
     */
    readonly parent: null | BaseContext;
    /**
     * Returns the event bus that this scope is using.  If this scope is nested inside
     * of another scope, it will use the parent scope's event bus (all the way up the
     * scope tree to the root scope).
     */
    readonly events: EventBus;
    /**
     * Returns the ID for the scope.  The scope ID is a combination of its own internal
     * ID and the IDs of its parents.
     */
    readonly id: string;
    /**
     * Returns true if the scope is the parent (or ancestor) of the given scope.
     */
    isAncestorOf(scope: BaseContext): boolean;
    /**
     * Returns true if the scope is the child (or descendent) of the given scope.
     */
    isDescendentOf(scope: BaseContext): boolean;
    /**
     * Subscribe to all events occurring within the hierarchy that this scope belongs to.
     */
    listen(sub: EventBusSubscriber): Function;
    /**
     * Triggers an update that will be broadcasted to all scopes within the hierarchy that
     * this scope belongs to.
     */
    broadcast(signal: FormEventSignal, field?: string): this;
    /**
     * Submits the form that the scope belongs to.
     */
    submit(): this;
    abstract readonly touched: boolean;
    abstract readonly value: any;
    abstract readonly valid: boolean;
    abstract readonly changed: boolean;
    abstract reset(): void;
    abstract clear(): void;
    abstract commit(): void;
}
export declare class ScopeContext extends BaseContext implements IScopeChild {
    protected _initialValues: FieldMap;
    children: {
        [key: string]: ScopeChild;
    };
    constructor(initialValues?: FieldMap, parentScope?: null | BaseContext);
    /**
     * Returns the initial values for the scope.
     */
    readonly initialValues: FieldMap;
    /**
     * Returns a child scope or field of this scope.  Returns null if a
     * valid child cannot be found.
     */
    getChild(name: string): ScopeChild | null;
    /**
     * Register a child scope or field to this scope.
     */
    setChild(name: string, child: ScopeChild): this;
    /**
     * Unregister a child scope or field from this scope.
     */
    clearChild(name: string): this;
    /**
     * Builds and returns a map of key/value pairs with the data managed by this
     * scope, and the child scopes.
     */
    readonly value: FieldMap;
    /**
     * Returns the errors for this scope and its descendents.
     */
    readonly error: null | ErrorMap;
    /**
     * Returns the errors for the requested fields or null if no errors were found in
     * the specified fields.
     */
    getErrors(fields: string[]): null | ErrorMap;
    /**
     * Returns an existing field or creates a new field context is one does not
     * exist.  The field is automatically added as a child to the scope.
     */
    field(name: string): FieldContext;
    /**
     * Returns true if none of the fields in the current scope have an error.
     */
    readonly valid: boolean;
    /**
     * Returns true if all of the specified children of this scope are considered valid.
     */
    areValid(fields: string[]): boolean;
    /**
     * Returns true if any of the fields have in the current scope have changed.
     */
    readonly changed: boolean;
    /**
     * Returns true if any of the fields have in the current scope have been touched.
     */
    readonly touched: boolean;
    /**
     * Returns true if any of the specified children of this scope have changed.
     */
    hasChanges(fields: string[]): boolean;
    /**
     * Resets the values of the all fields and scopes with in the current scope
     * back to their initial values.
     */
    reset(): this;
    /**
     * Clears the values of all fields and scopes within the current scope.
     */
    clear(): this;
    /**
     * Convenience method for getting a single value from the scope.
     */
    get(field: string, fallback?: any): any;
    /**
     * Adopts the current values for each field as the new initial value, setting the
     * changed state for the scope to `false`.  If you want to commit changes for a full
     * form from a sub scope, use `scope.root.commit()`.  Once you've committed the changes
     * you'll want to run the `.update()` method to broadcast the update.
     */
    commit(): this;
    /**
     * Convenience method that broadcasts the scope update event.
     */
    update(): this;
}
export declare class ListScopeContext extends BaseContext {
    children: ScopeContext[];
    protected _initialValues: FieldMap[];
    constructor(initialValues?: FieldMap[], parentScope?: null | BaseContext);
    /**
     * Returns the initial values for the list scope.
     */
    readonly initialValues: FieldMap[];
    /**
     * Adds a new child context to the list scope.
     */
    addChildScope(values?: FieldMap): this;
    /**
     * Splices a specific child by index.
     */
    removeChildScope(index: number): this | undefined;
    /**
     * Builds and returns an array with the data managed by this scope,
     * and the child scopes.
     */
    readonly value: FieldMap[];
    /**
     * Returns the errors for all of the scopes within this list scope as an array or
     * null if no errors are found in any of the nested scopes.
     */
    readonly error: null | ErrorMap[];
    /**
     * Returns true if none of the fields in the current scope have an error.
     */
    readonly valid: boolean;
    /**
     * Returns true if any of the fields have in the current scope have changed.
     */
    readonly changed: boolean;
    /**
     * Returns true if any of the fields have in the current scope have been touched.
     */
    readonly touched: boolean;
    /**
     * Resets the values of the all fields and scopes with in the current scope
     * back to their initial values.
     */
    reset(): this;
    /**
     * Clears the values of all fields and scopes within the current scope.
     */
    clear(): this;
    /**
     * Adopts the current values for each field as the new initial value, setting the
     * changed state for the scope to `false`.  If you want to commit changes for a full
     * form from a sub scope, use `scope.root.commit()`.  Once you've committed the changes
     * you'll want to run the `.update()` method to broadcast the update.
     */
    commit(): this;
    /**
     * Convenience method that broadcasts the scope update event.
     */
    update(): this;
}