zkoss/zk

/* PageContext.java

    Purpose:
        
    Description:
        
    History:
        Sat Oct 27 09:53:05     2007, Created by tomyeh

Copyright (C) 2007 Potix Corporation. All Rights Reserved.

{{IS_RIGHT
    This program is distributed under LGPL Version 2.1 in the hope that
    it will be useful, but WITHOUT ANY WARRANTY.
}}IS_RIGHT
*/
package org.zkoss.web.servlet.xel;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpSession;

import org.zkoss.xel.VariableResolver;

/**
 * Represents a page context.
 * The pageContext variable in EL expressions references to an instance
 * of this interface.
 *
 * <p>It is a replacement of javax.servlet.jsp.PageContext, since
 * ZK doesn't depend on JSP.
 *
 * @author tomyeh
 * @since 3.0.0
 */
public interface PageContext {
    /** The current request.
     */
    public ServletRequest getRequest();

    /** The current response.
     */
    public ServletResponse getResponse();

    /** The Servlet configuration.
     */
    public ServletConfig getServletConfig();

    /** The Servlet context.
     */
    public ServletContext getServletContext();

    /** The current session.
     */
    public HttpSession getSession();

    /** The current variable resolver.
     */
    public VariableResolver getVariableResolver();
}