chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentAppFactory.java

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package org.chromium.chrome.browser.payments;

import android.content.Context;

import org.chromium.base.VisibleForTesting;
import org.chromium.content_public.browser.WebContents;

import java.util.ArrayList;
import java.util.List;

/**
 * Builds instances of payment apps.
 */
public class PaymentAppFactory {
    /**
     * Can be used to build additional types of payment apps without Chrome knowing about their
     * types.
     */
    private static PaymentAppFactoryAddition sAdditionalFactory;

    /**
     * The interface for additional payment app factories.
     */
    public interface PaymentAppFactoryAddition {
        /**
         * Builds instances of payment apps.
         *
         * @param context     The application context.
         * @param webContents The web contents that invoked PaymentRequest.
         */
        List<PaymentApp> create(Context context, WebContents webContents);
    }

    /**
     * Sets the additional factory that can build instances of payment apps.
     *
     * @param additionalFactory Can build instances of payment apps.
     */
    @VisibleForTesting
    public static void setAdditionalFactory(PaymentAppFactoryAddition additionalFactory) {
        sAdditionalFactory = additionalFactory;
    }

    /**
     * Builds instances of payment apps.
     *
     * @param context     The context.
     * @param webContents The web contents where PaymentRequest was invoked.
     */
    public static List<PaymentApp> create(Context context, WebContents webContents) {
        List<PaymentApp> result = new ArrayList<>(2);
        result.add(new AutofillPaymentApp(context, webContents));
        if (sAdditionalFactory != null) {
            result.addAll(
                    sAdditionalFactory.create(context, webContents));
        }
        return result;
    }
}