/**
 * Copyright 2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/// <reference types="googlepay" />
export interface ReadyToPayChangeResponse {
    isButtonVisible: boolean;
    isReadyToPay: boolean;
    paymentMethodPresent?: boolean;
}
export interface Config {
    environment: google.payments.api.Environment;
    existingPaymentMethodRequired?: boolean;
    paymentRequest: google.payments.api.PaymentDataRequest;
    onPaymentDataChanged?: google.payments.api.PaymentDataChangedHandler;
    onPaymentAuthorized?: google.payments.api.PaymentAuthorizedHandler;
    onLoadPaymentData?: (paymentData: google.payments.api.PaymentData) => void;
    onCancel?: (reason: google.payments.api.PaymentsError) => void;
    onError?: (error: Error | google.payments.api.PaymentsError) => void;
    onReadyToPayChange?: (result: ReadyToPayChangeResponse) => void;
    onClick?: (event: Event) => void;
    buttonType?: google.payments.api.ButtonType;
    buttonColor?: google.payments.api.ButtonColor;
    buttonRadius?: number;
    buttonSizeMode?: google.payments.api.ButtonSizeMode;
    buttonLocale?: string;
    buttonBorderType?: google.payments.api.ButtonBorderType;
}
interface ButtonManagerOptions {
    cssSelector: string;
    softwareInfoId: string;
    softwareInfoVersion: string;
}
/**
 * Manages the lifecycle of the Google Pay button.
 *
 * Includes lifecycle management of the `PaymentsClient` instance,
 * `isReadyToPay`, `onClick`, `loadPaymentData`, and other callback methods.
 */
export declare class ButtonManager {
    private client?;
    private config?;
    private element?;
    private options;
    private oldInvalidationValues?;
    isReadyToPay?: boolean;
    paymentMethodPresent?: boolean;
    constructor(options: ButtonManagerOptions);
    getElement(): Element | undefined;
    private isGooglePayLoaded;
    mount(element: Element): Promise<void>;
    unmount(): void;
    configure(newConfig: Config): Promise<void>;
    /**
     * Creates client configuration options based on button configuration
     * options.
     *
     * This method would normally be private but has been made public for
     * testing purposes.
     *
     * @private
     */
    createClientOptions(config: Config): google.payments.api.PaymentOptions;
    private createIsReadyToPayRequest;
    /**
     * Constructs `loadPaymentData` request object based on button configuration.
     *
     * It infers request properties like `shippingAddressRequired`,
     * `shippingOptionRequired`, and `billingAddressRequired` if not already set
     * based on the presence of their associated options and parameters. It also
     * infers `callbackIntents` based on the callback methods defined in button
     * configuration.
     *
     * This method would normally be private but has been made public for
     * testing purposes.
     *
     * @private
     */
    createLoadPaymentDataRequest(config: Config): google.payments.api.PaymentDataRequest;
    private createMerchantInfo;
    private isMounted;
    private removeButton;
    private updateElement;
    /**
     * Handles the click event of the Google Pay button.
     *
     * This method would normally be private but has been made public for
     * testing purposes.
     *
     * @private
     */
    handleClick: (event: Event) => Promise<void>;
    private setClassName;
    private appendStyles;
    private isClientInvalidated;
    private getInvalidationValues;
}
export {};