com.socialsite.message.DeleteMsgLink.java Source code

Introduction

Here is the source code for com.socialsite.message.DeleteMsgLink.java

Source

/**
 *     Copyright SocialSite (C) 2009
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.socialsite.message;

import org.apache.wicket.MarkupContainer;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.model.IModel;
import org.apache.wicket.spring.injection.annot.SpringBean;

import com.socialsite.BasePanel;
import com.socialsite.SocialSiteSession;
import com.socialsite.authentication.SocialSiteRoles;
import com.socialsite.dao.MessageDao;
import com.socialsite.dao.UserDao;
import com.socialsite.persistence.Message;
import com.socialsite.persistence.User;

public class DeleteMsgLink<T extends Message> extends AjaxLink<T> {

    /** spring dao to handle message object */
    @SpringBean(name = "messageDao")
    private MessageDao<Message> messageDao;

    @SpringBean(name = "userDao")
    private UserDao<User> userDao;

    MarkupContainer dependent;
    BasePanel panel;
    long senderId;

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    public DeleteMsgLink(final String id, final IModel<T> model, final MarkupContainer dependent,
            final BasePanel panel, final long senderId) {
        super(id, model);
        this.dependent = dependent;
        this.panel = panel;
        this.senderId = senderId;
    }

    @Override
    public boolean isVisible() {
        // allow the owner and the sender to delete the msg
        if (panel.hasRole(SocialSiteRoles.OWNER)) {
            return true;
        } else {
            return senderId == panel.getSessionUserId();
        }
    }

    @Override
    public void onClick(final AjaxRequestTarget target) {

        Message msg = messageDao.load(getModelObject().getId());
        User user = userDao.load((SocialSiteSession.get().getUserId()));
        msg.removeUser(user);
        messageDao.save(msg);
        target.addComponent(dependent);
        panel.firePostAjaxUpdateEvent(target);
    }
}