home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Programming Languages Suite
/
ProgLangD.iso
/
VCAFE.3.0A
/
Main.bin
/
Panel.java
< prev
next >
Wrap
Text File
|
1998-09-22
|
2KB
|
83 lines
/*
* @(#)Panel.java 1.20 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;
import java.awt.peer.PanelPeer;
/**
* <code>Panel</code> is the simplest container class. A panel
* provides space in which an application can attach any other
* component, including other panels.
* <p>
* The default layout manager for a panel is the
* <code>FlowLayout</code> layout manager.
*
* @version 1.20, 07/01/98
* @author Sami Shaio
* @see java.awt.FlowLayout
* @since JDK1.0
*/
public class Panel extends Container {
final static LayoutManager panelLayout = new FlowLayout();
private static final String base = "panel";
private static int nameCounter = 0;
/*
* JDK 1.1 serialVersionUID
*/
private static final long serialVersionUID = -2728009084054400034L;
/**
* Creates a new panel using the default layout manager.
* The default layout manager for all panels is the
* <code>FlowLayout</code> class.
* @since JDK1.0
*/
public Panel() {
this(panelLayout);
}
/**
* Creates a new panel with the specified layout manager.
* @param layout the layout manager for this panel.
* @since JDK1.1
*/
public Panel(LayoutManager layout) {
setLayout(layout);
}
/**
* Construct a name for this component. Called by getName() when the
* name is null.
*/
String constructComponentName() {
return base + nameCounter++;
}
/**
* Creates the Panel's peer. The peer allows you to modify the
* appearance of the panel without changing its functionality.
*/
public void addNotify() {
synchronized (getTreeLock()) {
if (peer == null)
peer = getToolkit().createPanel(this);
super.addNotify();
}
}
}