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/*
 * Copyright 2000-2013 Vaadin Ltd.
 *
 * 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.vaadin.tests.themes;

import java.io.IOException;
import java.util.List;

import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.support.ui.ExpectedCondition;

import com.vaadin.testbench.elements.ButtonElement;
import com.vaadin.tests.tb3.MultiBrowserTest;

public class ThemeChangeOnTheFlyTest extends MultiBrowserTest {

    /*
     * (non-Javadoc)
     * 
     * @see com.vaadin.tests.tb3.MultiBrowserTest#getBrowsersToTest()
     */
    @Override
    public List<DesiredCapabilities> getBrowsersToTest() {
        // Seems like stylesheet onload is not fired on PhantomJS
        List<DesiredCapabilities> l = super.getBrowsersToTest();
        l.remove(Browser.PHANTOMJS.getDesiredCapabilities());
        return l;
    }

    @Test
    public void injectedStyleAndThemeChange() throws IOException {
        openTestURL();
        $(ButtonElement.class).caption("Inject blue background").first()
                .click();
        changeTheme("runo");
        compareScreen("runo-blue-background");
    }

    @Test
    public void reindeerToOthers() throws IOException {
        openTestURL();
        compareScreen("reindeer");

        changeThemeAndCompare("runo");
        changeThemeAndCompare("chameleon");
        changeThemeAndCompare("base");

    }

    @Test
    public void runoToReindeer() throws IOException {
        openTestURL("theme=runo");
        compareScreen("runo");
        changeThemeAndCompare("reindeer");
    }

    @Test
    public void reindeerToNullToReindeer() throws IOException {
        openTestURL();

        changeThemeAndCompare("null");
        changeThemeAndCompare("reindeer");
    }

    private void changeThemeAndCompare(String theme) throws IOException {
        changeTheme(theme);
        compareScreen(theme);
    }

    private void changeTheme(String theme) {
        $(ButtonElement.class).id(theme).click();
        if (theme.equals("null")) {
            waitForThemeToChange("");
        } else {
            waitForThemeToChange(theme);
        }
    }

    private void waitForThemeToChange(final String theme) {

        final WebElement rootDiv = findElement(By
                .xpath("//div[contains(@class,'v-app')]"));
        waitUntil(new ExpectedCondition<Boolean>() {

            @Override
            public Boolean apply(WebDriver input) {
                String rootClass = rootDiv.getAttribute("class").trim();
                String expected = "v-app " + theme;
                expected = expected.trim();
                return rootClass.equals(expected);
            }
        }, 30);
    }
}