grouppropertylistener.java

java写的qq代码实现qq的部分功能

/*
* LumaQQ - Java QQ Client
*
* Copyright (C) 2004 luma <[e-mail]>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package edu.tsinghua.lumaqq.events;

import edu.tsinghua.lumaqq.models.GroupModel;
import edu.tsinghua.lumaqq.models.IQQNode;
import edu.tsinghua.lumaqq.ui.MainShell;
import edu.tsinghua.swt.events.PropertyEvent;
import edu.tsinghua.swt.events.PropertyListener;
import edu.tsinghua.swt.widgets.CoolButton;

/**
 * 监视组的属性变化
 * 
 * @author 马若劼
 */
public class GroupPropertyListener implements PropertyListener {
	private MainShell main;
	
	/**
	 * 构造函数
	 * @param main
	 */
	public GroupPropertyListener(MainShell main) {
		this.main = main;
	}
	
	/* (non-Javadoc)
	 * @see edu.tsinghua.swt.events.PropertyListener#propertyAdded(edu.tsinghua.swt.events.PropertyEvent)
	 */
	public void propertyAdded(PropertyEvent e) {
	    if(e.key.equals(IQQNode.ONLINE_USER) || e.key.equals(IQQNode.USERS)) {
			int index = main.getModel().indexOf(e.getSource());
			refreshGroupStatistics(index);
		}
	}
	
	/* (non-Javadoc)
	 * @see edu.tsinghua.swt.events.PropertyListener#propertyRemoved(edu.tsinghua.swt.events.PropertyEvent)
	 */
	public void propertyRemoved(PropertyEvent e) {
	    // 没有什么要做的
	}
	
	/* (non-Javadoc)
	 * @see edu.tsinghua.swt.events.PropertyListener#propertyModified(edu.tsinghua.swt.events.PropertyEvent)
	 */
	public void propertyModified(PropertyEvent e) {
		if(e.key.equals(IQQNode.VISIBLE)) {
			int index = main.getModel().indexOf(e.getSource());
			if("true".equals(e.newValue)) 
				main.getShutter().showTab(index, true);
			else
				main.getShutter().hideTab(index, true);
			
			main.getShutter().layout();
		} else if(e.key.equals(IQQNode.ONLINE_USER) || e.key.equals(IQQNode.USERS)) {
			int index = main.getModel().indexOf(e.getSource());
			refreshGroupStatistics(index);
		} else if(e.key.equals(IQQNode.NAME)) {
			// 这个功能不再使用，因为LumaQQ会允许不自动更新分组信息，所以，这里搞成自动的会带来问题
		    //main.getMVCHelper().updateGroupInServer();
		}
	}
	
	/**
	 * 刷新组好友统计数据
	 * 
	 * @param tabIndex
	 */
	private void refreshGroupStatistics(int tabIndex) {
	    GroupModel g = (GroupModel)main.getModel().getTab(tabIndex);
	    CoolButton tab = main.getShutter().getTabControl(tabIndex);
	    String text = tab.getText();
	    int i = text.lastIndexOf('(');
	    if(i != -1)
	        text = text.substring(0, i - 1);
	    tab.setText(text + " (" + g.getOnlineUser() + '/' + g.getUsers() + ')');
	}
}