updatefieldbuttontag.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.data.fields.JahiaField;
import org.jahia.exceptions.JahiaException;
import org.jahia.services.usermanager.JahiaUser;
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 UpdateFieldButtonTag : returns the full link ("<a href...>...</a>")
 *                              allowing to open the update field popup window
 *
 * @author  Jerome Tamiotti
 */
public class UpdateFieldButtonTag extends AbstractButtonTag {

    private JahiaField theField = null;

	private String field = "";
	private String title = "Update";
	private String style = "";
    private int pageId = -1;
    private int pageLevel = -1;

	public void setField(String field) {
		this.field = field;
	}

	public void setTitle(String title) {
		this.title = title;
	}

    public void setStyle(String style) {
		this.style = style;
	}

    public void setPageId(String pageId) {
        try {
            this.pageId = Integer.parseInt(pageId);
        } catch (NumberFormatException nfe) {
            JahiaConsole.println("UpdateFieldButtonTag: setPageId", "The given page id is not a number");
        }
    }

    public void setPageLevel(String pageLevel) {
        try {
            this.pageLevel = Integer.parseInt(pageLevel);
        } catch (NumberFormatException nfe) {
            JahiaConsole.println("UpdateFieldButtonTag: setPageLevel", "The given page level is not a number");
        }
    }

    public String getTitle() {
        return this.title;
    }

    public String getStyle() {
        return this.style;
    }

    public boolean testRights (JahiaData jData) {

        try {
            // checks if the related field is absolute
            if (this.pageId == -1) {
                // check for page level
                if (this.pageLevel != -1) {
                    this.pageId = jData.gui().getLevelID(this.pageLevel);
                }
            }
            if (this.pageId != -1) {
                this.theField = jData.fields().getAbsoluteField(this.field, this.pageId);
            } else {
                this.theField = jData.fields().getField(this.field);
            }
    		if (this.theField != null) {
	    		JahiaUser user = jData.params().getUser();
		    	return this.theField.checkWriteAccess(user,jData.params().getSiteID()) && jData.gui().isEditMode();
	        }
	    } catch (JahiaException je) {
	        JahiaConsole.println("UpdateFieldButtonTag: testRights ", je.toString());
	    }
	    return false;
	}

    public String getLauncher(JahiaData jData) throws JahiaException {
        // returns the URL that launches the container list popup window
        return "javascript:" + jData.gui().html().drawUpdateFieldLauncher(this.theField);
    }

}