ghostdropadapter.java

《SWING HACKS》源码 作者: Joshua Marinacci,Chris Adamson 著 徐晔 译 出版: 2007年2月

import java.awt.event.MouseAdapter;

import java.util.ArrayList;
import java.util.List;
import java.util.Iterator;

public class GhostDropAdapter extends MouseAdapter {
    protected GhostGlassPane glassPane;
	protected String action;

	private List listeners;

    public GhostDropAdapter(GhostGlassPane glassPane, String action) {
        this.glassPane = glassPane;
        this.action = action;
        this.listeners = new ArrayList();
    }

    public void addGhostDropListener(GhostDropListener listener) {
        if (listener != null)
            listeners.add(listener);
    }

    public void removeGhostDropListener(GhostDropListener listener) {
        if (listener != null)
            listeners.remove(listener);
    }

    protected void fireGhostDropEvent(GhostDropEvent evt) {
        Iterator it = listeners.iterator();
        while (it.hasNext()) {
        	((GhostDropListener) it.next()).ghostDropped(evt);
        }
    }
}