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Clipboard.java
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1998-09-22
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/*
* @(#)Clipboard.java 1.6 98/07/01
*
* Copyright 1995-1998 by Sun Microsystems, Inc.,
* 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
* All rights reserved.
*
* This software is the confidential and proprietary information
* of Sun Microsystems, Inc. ("Confidential Information"). You
* shall not disclose such Confidential Information and shall use
* it only in accordance with the terms of the license agreement
* you entered into with Sun.
*/
package java.awt.datatransfer;
/**
* A class which implements a mechanism to transfer data using
* cut/copy/paste operations.
*
* @version 1.6, 07/01/98
* @author Amy Fowler
*/
public class Clipboard {
String name;
protected ClipboardOwner owner;
protected Transferable contents;
/**
* Creates a clipboard object.
*/
public Clipboard(String name) {
this.name = name;
}
/**
* Returns the name of this clipboard object.
*/
public String getName() {
return name;
}
/**
* Sets the current contents of the clipboard to the specified
* transferable object and registers the specified clipboard owner
* as the owner of the new contents. If there is an existing owner
* registered, that owner is notified that it no longer holds ownership
* of the clipboard contents.
* @param content the transferable object representing the clipboard content
* @param owner the object which owns the clipboard content
*/
public synchronized void setContents(Transferable contents, ClipboardOwner owner) {
if (this.owner != null && this.owner != owner) {
this.owner.lostOwnership(this, this.contents);
}
this.owner = owner;
this.contents = contents;
}
/**
* Returns a transferable object representing the current contents
* of the clipboard. If the clipboard currently has no contents,
* it returns null.
* @param requestor the object requesting the clip data
* @return the current transferable object on the clipboard
*/
public synchronized Transferable getContents(Object requestor) {
return contents;
}
}