pr13

package grafeditor.actions;

import java.awt.datatransfer.Transferable;
import java.util.EventObject;

public class ClipboardEvent extends EventObject{

    protected Transferable newContent;


    //clipboar je source  za cl.event
    public ClipboardEvent(Object source) {
        super(source);
        // TODO Auto-generated constructor stub
    }

    public Transferable getNewContent() {
        return newContent;
    }

    public void setNewContent(Transferable newContent) {
        this.newContent = newContent;
    }


}
--------------------
package grafeditor.actions;

import java.util.EventListener;

public interface ClipboardListener extends EventListener{
    public void clipboardContentChange(ClipboardEvent c_event);

}
--------------------------
package grafeditor.actions;

import grafeditor.event.UpdateEvent;
import grafeditor.event.UpdateListener;

import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.ClipboardOwner;
import java.awt.datatransfer.Transferable;

import javax.swing.event.EventListenerList;

public class IspaljivacDogadjaja extends Clipboard{


    transient  EventListenerList listenerList = new EventListenerList();


    public IspaljivacDogadjaja(String name) {
        super(name);
        // TODO Auto-generated constructor stub
    }


     public void addUpdateListener(ClipboardListener l) {
         listenerList.add(ClipboardListener.class, l);
     }

     public void removeUpdateListener(ClipboardListener l) {
         listenerList.remove(ClipboardListener.class, l);
     }

        /**
         * Javljamo svim listenerima da se događaj desio
         */
        protected void fireUpdatePerformed(ClipboardEvent e) {

             Object[] listeners = listenerList.getListenerList();
             for (int i = listeners.length-2; i>=0; i-=2) {
                 if (listeners[i]==ClipboardListener.class) {
                     ((ClipboardListener)listeners[i+1]).clipboardContentChange(e);
                 }
             }
         }


        @Override
        public synchronized void setContents(Transferable contents,ClipboardOwner owner) {
            // TODO Auto-generated method stub
            super.setContents(contents, owner);

            ClipboardEvent e = new ClipboardEvent(this);
            e.setNewContent(contents);
            fireUpdatePerformed(e);
        }

}