logbuttontag.java

java 写的一个新闻发布系统

package org.jahia.taglibs.button;

import org.jahia.data.JahiaData;
import org.jahia.exceptions.JahiaException;
import org.jahia.taglibs.util.Utils;
import org.jahia.utils.JahiaConsole;

import java.io.*;
import java.util.*;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;


/**
 * Class LogButtonTag : return the full link ("<a href...>...</a>") allowing to
 *                      login / logout
 *
 * @author  Jerome Tamiotti
 */
public class LogButtonTag extends AbstractButtonTag {

    private String loginTitle = "Login";
	private String logoutTitle = "Logout";
	private String style = "";

    private boolean isLogged = false;

    public void setLoginTitle(String title) {
		this.loginTitle = title;
	}
	
    public void setLogoutTitle(String title) {
		this.logoutTitle = title;
	}
	
    public void setStyle(String style) {
		this.style = style;
	}
    
    public String getTitle() {
        return isLogged ? logoutTitle : loginTitle;
    }
    
    public String getStyle() {
        return this.style;
    }
         
    public boolean testRights (JahiaData jData) {		
        // this button is always visible
        return true;
    }
    
    public String getLauncher(JahiaData jData) throws JahiaException {
        // returns the URL used to login / logout
        if (jData.gui().isLogged()) {
            this.isLogged = true;
            return jData.gui().html().drawLogoutLauncher();
        } else {
            this.isLogged = false; 
			return "javascript:" + jData.gui().html().drawLoginLauncher() ;
        }
    }
     
}