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Extension for functional testing based on web view layer (Ajocado, Selenium, WebDriver)

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package org.jboss.arquillian.drone.webdriver.utils;

import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;

/**
 * @author Matous Jobanek
 */
public class PropertySecurityAction {

    // TODO: make the class protected

    public static String getProperty(final String key) {
        try {
            String value = AccessController.doPrivileged(new PrivilegedExceptionAction() {
                public String run() {
                    return System.getProperty(key);
                }
            });
            return value;
        }
        // Unwrap
        catch (final PrivilegedActionException pae) {
            final Throwable t = pae.getCause();
            // Rethrow
            if (t instanceof SecurityException) {
                throw (SecurityException) t;
            }
            if (t instanceof NullPointerException) {
                throw (NullPointerException) t;
            } else if (t instanceof IllegalArgumentException) {
                throw (IllegalArgumentException) t;
            } else {
                // No other checked Exception thrown by System.getProperty
                try {
                    throw (RuntimeException) t;
                }
                // Just in case we've really messed up
                catch (final ClassCastException cce) {
                    throw new RuntimeException("Obtained unchecked Exception; this code should never be reached", t);
                }
            }
        }
    }

    public static String setProperty(final String key, final String value) {
        try {
            String oldValue = AccessController.doPrivileged(new PrivilegedExceptionAction() {
                public String run() {
                    if (value == null) {
                        return System.clearProperty(key);
                    }
                    return System.setProperty(key, value);
                }
            });
            return oldValue;
        }
        // Unwrap
        catch (final PrivilegedActionException pae) {
            final Throwable t = pae.getCause();
            // Rethrow
            if (t instanceof SecurityException) {
                throw (SecurityException) t;
            }
            if (t instanceof NullPointerException) {
                throw (NullPointerException) t;
            } else if (t instanceof IllegalArgumentException) {
                throw (IllegalArgumentException) t;
            } else {
                // No other checked Exception thrown by System.getProperty
                try {
                    throw (RuntimeException) t;
                }
                // Just in case we've really messed up
                catch (final ClassCastException cce) {
                    throw new RuntimeException("Obtained unchecked Exception; this code should never be reached", t);
                }
            }
        }
    }
}