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PC World Komputer 1998 July & August
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DATA.Z
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Clipboard.java
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1997-08-30
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/*
* @(#)Clipboard.java 1.5 96/11/23
*
* Copyright (c) 1995, 1996 Sun Microsystems, Inc. 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.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
* SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
* THIS SOFTWARE OR ITS DERIVATIVES.
*
* CopyrightVersion 1.1_beta
*
*/
package java.awt.datatransfer;
/**
* A class which implements a mechanism to transfer data using
* cut/copy/paste operations.
*
* @version 1.5, 11/23/96
* @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;
}
}