com.twosigma.webtau.browser.navigation.BrowserPageNavigation Maven / Gradle / Ivy

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/*
 * Copyright 2018 TWO SIGMA OPEN SOURCE, 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.
 */

package com.twosigma.webtau.browser.navigation;

import com.twosigma.webtau.utils.ServiceUtils;
import org.openqa.selenium.WebDriver;

import java.util.List;

public class BrowserPageNavigation {
    private static final ThreadLocal handlersEnabled = ThreadLocal.withInitial(() -> true);
    private static final List handlers =
            ServiceUtils.discover(BrowserPageNavigationHandler.class);

    public static void addHandler(BrowserPageNavigationHandler handler) {
        handlers.add(handler);
    }

    public static void open(WebDriver driver, String passedUrl, String fullUrl) {
        driver.get(fullUrl);
        onOpenedPage(passedUrl, fullUrl, driver.getCurrentUrl());
    }

    public static void refresh(WebDriver driver) {
        driver.navigate().refresh();
        String fullUrl = driver.getCurrentUrl();
        onOpenedPage(fullUrl, fullUrl, fullUrl);
    }

    private static void onOpenedPage(String passedUrl, String fullUrl, String currentUrl) {
        if (! handlersEnabled.get()) {
            return;
        }

        withDisabledHandlers(() ->
                handlers.forEach(h -> h.onOpenedPage(passedUrl, fullUrl, currentUrl)));
    }

    private static void withDisabledHandlers(Runnable code) {
        try {
            disableHandlers();
            code.run();
        } finally {
            enableHandlers();
        }
    }

    private static void disableHandlers() {
        handlersEnabled.set(false);
    }

    private static void enableHandlers() {
        handlersEnabled.set(true);
    }
}