protected.java

来自「采用tapestry的简单OA系统」· Java 代码 · 共 43 行

package com.ejsun.entapps.presentation.pages;

import org.apache.tapestry.PageRedirectException;
import org.apache.tapestry.callback.PageCallback;
import org.apache.tapestry.event.PageEvent;
import org.apache.tapestry.event.PageValidateListener;

import com.ejsun.entapps.domain.organization.User;
import com.ejsun.entapps.presentation.Visit;
import com.ejsun.entapps.presentation.pages.user.Login;
import com.ejsun.entapps.util.CurrentUser;

/**
 * Base page used for pages that should be protected by the {@link Login} page.
 * If the user is not logged in, they are redirected to the Login page first.
 * Also, implements an error property and a validationDelegate.
 * 
 * @author	Quake Wang (reference Tapestry Vlib example)
 * @since	2004-3-21
 * @version $Revision: 1.1 $
 * 
 **/

public class Protected extends ApplicationBasePage implements PageValidateListener {

    public void pageValidate(PageEvent event) {
        Visit visit = (Visit) getVisit();
        if (visit != null && visit.isUserLoggedIn()){
        	CurrentUser.set(visit.getUser());
			return;
        }

        // User not logged in ... redirect through the Login page.
        Login login = (Login) getRequestCycle().getPage("Login");
        login.setCallback(new PageCallback(this));
        throw new PageRedirectException(login);
    }

    //a quick method to get logined user
    public User getUser() {
        return ((Visit) getVisit()).getUser();
    }
}