logrollovertag.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 LogRolloverTag : return the full link ("<a href...>...</a>") allowing to
 *                        login / logout, that supports rollover
 *
 * @author  Jerome Tamiotti
 */
public class LogRolloverTag extends AbstractRolloverTag {
   
    // tag attributes    
    private String imgdir = "images";
    private String loginOn;
	private String loginOff;
	private String logoutOn;
	private String logoutOff;
	private String width = "";
	private String height = "";


    // setter for tag attributes
	public void setImgdir(String imgdir) {
	    this.imgdir = imgdir;
	}
	
	public String getImgDir() {
	    return this.imgdir;
	}

    public void setLoginOn(String loginOn) {
		this.loginOn = loginOn;
	}

    public void setLoginOff(String loginOff) {
		this.loginOff = loginOff;
	}
	
    public void setLogoutOn(String logoutOn) {
		this.logoutOn = logoutOn;
	}
	
    public void setLogoutOff(String logoutOff) {
		this.logoutOff = logoutOff;
	}

    public void setWidth(String width) {
		this.width = width;
	}
    
    public String getWidth() {
		return this.width;
	}

    public void setHeight(String height) {
		this.height = height;
	}
	
	public String getHeight() {
		return this.height;
	}

    // define methods declared in AbstractButtonTag
	public boolean testRights(JahiaData jData) {
	    // the login button does not require any condition
	    return true;
	}
	
	public String getLauncher (JahiaData jData)
        throws JahiaException {
        return jData.gui().isLogged() ? jData.gui().html().drawLogoutLauncher() 
		                              : "javascript:" + jData.gui().html().drawLoginLauncher();
    }
    
    // define methods declared in AbstractRolloverTag
    public String getMouseOutImage(JahiaData jData) 
        throws JahiaException {
        return jData.gui().isLogged() ? this.logoutOff : this.loginOff;
    }
    
    public String getMouseOverImage(JahiaData jData) 
        throws JahiaException {
        return jData.gui().isLogged() ? this.logoutOn : this.loginOn;
    }
    

}