EDIT

package eu.etaxonomy.dataportal.pages;

import java.net.MalformedURLException;

import java.net.URL;

import java.util.ArrayList;

import java.util.List;

import org.apache.log4j.Logger;

import org.openqa.selenium.By;

import org.openqa.selenium.NoSuchElementException;

import org.openqa.selenium.WebDriver;

import org.openqa.selenium.WebElement;

import org.openqa.selenium.support.CacheLookup;

import org.openqa.selenium.support.FindBy;

import org.openqa.selenium.support.FindBys;

import org.openqa.selenium.support.PageFactory;

import eu.etaxonomy.dataportal.DataPortalContext;

import eu.etaxonomy.dataportal.elements.LinkElement;

import eu.etaxonomy.dataportal.selenium.JUnitWebDriverWait;

public abstract class  PortalPage {

	public static final Logger logger = Logger.getLogger(PortalPage.class);

	protected final static String DRUPAL_PAGE_QUERY_BASE = "?q=";

	protected WebDriver driver;

	protected final JUnitWebDriverWait wait;

	/**

	 * Implementations of this method will supply the relative

	 * path to the Drupal page. This path will usally have the form

	 * <code>cdm_dataportal/{nodetype}</code>. For example the taxon pages all

	 * have the page base <code>cdm_dataportal/taxon</code>

	 * @return

	 */

	protected abstract String getDrupalPageBase();

	private String drupalPagePath;

	protected URL pageUrl;

	// ==== WebElements === //

	@FindBy(id="cdm_dataportal.node")

	protected WebElement portalContent;

	@FindBy(tagName="title")

	@CacheLookup

	protected WebElement title;

	@FindBy(className="node")

	protected WebElement node;

	@FindBys({@FindBy(id="tabs-wrapper"), @FindBy(className="primary")})

	@CacheLookup

	protected WebElement primaryTabs;

	/**

	 * Creates a new PortaPage. Implementations of this class will provide the base path of the page by

	 * implementing the method {@link #getDrupalPageBase()}. The constructor argument <code>pagePathSuffix</code>

	 * specifies the specific page to navigate to. For example:

	 * <ol>

	 * <li>{@link #getDrupalPageBase()} returns <code>/cdm_dataportal/taxon</code></li>

	 * <li><code>pagePathSuffix</code> gives <code>7fe8a8b6-b0ba-4869-90b3-177b76c1753f</code></li>

	 * </ol>

	 * Both are combined to form the URL pathelement <code>/cdm_dataportal/taxon/7fe8a8b6-b0ba-4869-90b3-177b76c1753f</code>

	 *

	 *

	 * @param driver

	 * @param context

	 * @param pagePathSuffix

	 * @throws MalformedURLException

	 */

	public PortalPage(WebDriver driver, DataPortalContext context, String pagePathSuffix) throws MalformedURLException {

		this.driver = driver;

		this.wait = new JUnitWebDriverWait(driver, 25);

		this.drupalPagePath = getDrupalPageBase() + (pagePathSuffix != null ? "/" + pagePathSuffix: "");

		this.pageUrl = new URL(context.getBaseUri().toString() + DRUPAL_PAGE_QUERY_BASE + drupalPagePath);

		// tell browser to navigate to the page

		driver.get(pageUrl.toString());

	    // This call sets the WebElement fields.

	    PageFactory.initElements(driver, this);

		logger.info("loading " + pageUrl);

	}

	/**

	 * Creates a new PortaPage at given URL location. An Exception is thrown if

	 * this URL is not matching the expected URL for the specific page type.

	 *

	 * @param driver

	 * @param context

	 * @param url

	 * @throws Exception

	 */

	public PortalPage(WebDriver driver, DataPortalContext context, URL url) throws Exception {

		this.driver = driver;

		this.wait = new JUnitWebDriverWait(driver, 25);

		this.pageUrl = new URL(context.getBaseUri().toString() + DRUPAL_PAGE_QUERY_BASE + getDrupalPageBase());

		// tell browser to navigate to the given URL

		driver.get(url.toString());

		if(!isOnPage()){

			throw new Exception("Not on the expected portal page: " + driver.getCurrentUrl());

		}

		this.pageUrl = url;

	    // This call sets the WebElement fields.

	    PageFactory.initElements(driver, this);

		logger.info("loading " + pageUrl);

	}

	/**

	 * Creates a new PortaPage at the WebDrivers current URL location. An Exception is thrown if

	 * driver.getCurrentUrl() is not matching the expected URL for the specific page type.

	 *

	 * @param driver

	 * @param context

	 * @throws Exception

	 */

	public PortalPage(WebDriver driver, DataPortalContext context) throws Exception {

		this.driver = driver;

		this.wait = new JUnitWebDriverWait(driver, 25);

		this.pageUrl = new URL(context.getBaseUri().toString() + DRUPAL_PAGE_QUERY_BASE + getDrupalPageBase());

		if(!isOnPage()){

			throw new Exception("Not on the expected portal page: " + driver.getCurrentUrl());

		}

	    // This call sets the WebElement fields.

	    PageFactory.initElements(driver, this);

		logger.info("loading " + pageUrl);

	}

	/**

	 * @return

	 */

	protected boolean isOnPage() {

		return driver.getCurrentUrl().startsWith(pageUrl.toString());

	}

	public void get() {

		if(!driver.getCurrentUrl().equals(pageUrl.toString())){

			driver.get(pageUrl.toString());

			PageFactory.initElements(driver, this);

		}

	}

	public String getDrupalPagePath() {

		return drupalPagePath;

	}

	/**

	 * returns the string from the <code>title</code> tag.

	 * @return

	 */

	public String getTitle() {

		return title.getText();

	}

	public String getAuthorInformationText() {

		WebElement authorInformation = null;

		try {

			authorInformation  = node.findElement(By.className("submitted"));

		} catch (NoSuchElementException e) {

			// IGNORE //

		}

		if(authorInformation != null){

			return authorInformation.getText();

		} else {

			return null;

		}

	}

	public List<LinkElement> getPrimaryTabs(){

		List<LinkElement> tabs = new ArrayList<LinkElement>();

		List<WebElement> links = primaryTabs.findElements(By.tagName("a"));

		for(WebElement a : links) {

			WebElement renderedLink = a;

			if(renderedLink.isDisplayed()){

				tabs.add(new LinkElement(renderedLink));

			}

		}

		return tabs;

	}

	/**

	 * Returns the current URL string from the {@link WebDriver}

	 * @return

	 */

	public String getURL() {

		return driver.getCurrentUrl();

	}

	/**

	 * return the <code>scheme://domain:port</code> part of the initial url of this page.

	 * @return

	 */

	public String getInitialUrlBase() {

		return pageUrl.getProtocol() + "://" + pageUrl.getHost() + pageUrl.getPort();

	}

	public boolean equals(Object obj) {

		if (PortalPage.class.isAssignableFrom(obj.getClass())) {

			PortalPage page = (PortalPage) obj;

			return this.getURL().equals(page.getURL());

		} else {

			return false;

		}

	}

}