switchmoderollovertag.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.registries.ServicesRegistry;
import org.jahia.services.usermanager.*;
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 SwitchModeRolloverTag : return the full link ("<a href...>...</a>") allowing to
 *                      switch between view mode and edit mode, that supports rollover
 *
 * @author  Jerome Tamiotti
 */
public class SwitchModeRolloverTag extends AbstractRolloverTag {
   
    // counter to handle multiple tag occurrences
    private Integer counter;
    
    private String imgdir = "images";
    private String viewOn = "";
	private String viewOff = "";
	private String editOn = "";
	private String editOff = "";
	private String width = "";
	private String height = "";
	
	public void setImgdir(String imgdir) {
	    this.imgdir = imgdir;
	}
	
	public String getImgDir() {
	    return this.imgdir;
	}
	
    public void setViewOn(String viewOn) {
		this.viewOn = viewOn;
	}

    public void setViewOff(String viewOff) {
		this.viewOff = viewOff;
	}
	
    public void setEditOn(String editOn) {
		this.editOn = editOn;
	}
	
    public void setEditOff(String editOff) {
		this.editOff = editOff;
	}

    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) {
	    // first, checks that attributes are well defined
		if (this.editOn.equals("") || this.editOff.equals("")) {
		    this.editOn = this.viewOn;
		    this.editOff = this.viewOff;
		}
	    try {
            // this button is displayed when the user is logged,
            // or when the guest was set write access on the current page
            JahiaUserManagerService userService = ServicesRegistry.getInstance().getJahiaUserManagerService();
            JahiaUser theUser = userService.lookupUser( jData.page().getJahiaID(), userService.GUEST_USERNAME );
            return jData.gui().isLogged() || jData.page().checkWriteAccess(theUser);
	    } catch (JahiaException je) {
	        JahiaConsole.println("SwitchModeRolloverTag: testRights ", je.toString());
	    }
	    return false;
	}
	
	public String getLauncher (JahiaData jData)
        throws JahiaException {
        return jData.gui().drawSwitchModeLink();
    }
    
    // define methods declared in AbstractRolloverTag
    public String getMouseOutImage(JahiaData jData) 
        throws JahiaException {
        return jData.gui().isEditMode() ? this.viewOff : this.editOff;
    }
    
    public String getMouseOverImage(JahiaData jData) 
        throws JahiaException {
        return jData.gui().isEditMode() ? this.viewOn : this.editOn;
    }
    
}