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/**
 * JBoss, Home of Professional Open Source
 * Copyright 2013, Red Hat, Inc. and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.arquillian.graphene.enricher;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.List;

import org.jboss.arquillian.core.api.Instance;
import org.jboss.arquillian.core.api.annotation.Inject;
import org.jboss.arquillian.graphene.context.GrapheneContext;
import org.jboss.arquillian.graphene.findby.FindByUtilities;
import org.jboss.arquillian.graphene.proxy.GrapheneProxyInstance;
import org.jboss.arquillian.graphene.spi.configuration.GrapheneConfiguration;
import org.openqa.selenium.By;
import org.openqa.selenium.SearchContext;
import org.openqa.selenium.WebElement;

/**
 * @author Juraj Huska
 * @author Jan Papousek
 */
public class WebElementEnricher extends AbstractSearchContextEnricher {

    @Inject
    private Instance configuration;

    public WebElementEnricher() {
    }

    // because of testing
    public WebElementEnricher(Instance configuration) {
        this.configuration = configuration;
    }

    @Override
    public void enrich(final SearchContext searchContext, Object target) {
        try {
            List fields = FindByUtilities.getListOfFieldsAnnotatedWithFindBys(target);
            for (Field field : fields) {
                GrapheneContext grapheneContext = searchContext == null ? null : ((GrapheneProxyInstance) searchContext).getGrapheneContext();
                final SearchContext localSearchContext;
                if (grapheneContext == null) {
                    grapheneContext = GrapheneContext.getContextFor(ReflectionHelper.getQualifier(field.getAnnotations()));
                    localSearchContext = grapheneContext.getWebDriver(SearchContext.class);
                } else {
                    localSearchContext = searchContext;
                }
                //by should never be null, by default it is ByIdOrName using field name
                By by = FindByUtilities.getCorrectBy(field, configuration.get().getDefaultElementLocatingStrategy());
                // WebElement
                if (field.getType().isAssignableFrom(WebElement.class)) {
                    WebElement element = WebElementUtils.findElementLazily(by, localSearchContext);
                    setValue(field, target, element);
                    // List
                } else if (field.getType().isAssignableFrom(List.class)
                    && getListType(field).isAssignableFrom(WebElement.class)) {
                    List elements = WebElementUtils.findElementsLazily(by, localSearchContext);
                    setValue(field, target, elements);
                }
            }
        } catch (ClassNotFoundException e) {
            throw new IllegalStateException(e.getMessage(), e);
        }
    }

    @Override
    public Object[] resolve(SearchContext searchContext, Method method, Object[] resolvedParams) {
        return resolvedParams;
    }

    @Override
    public int getPrecedence() {
        return 1;
    }
}