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Java Source | 1999-05-28 | 2.1 KB | 82 lines | [TEXT/CWIE] |
- /*
- * @(#)Panel.java 1.23 98/08/25
- *
- * 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 1.23, 08/25/98
- * @author Sami Shaio
- * @see java.awt.FlowLayout
- * @since JDK1.0
- */
- public class Panel extends Container {
- 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.
- */
- public Panel() {
- this(new FlowLayout());
- }
-
- /**
- * 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() {
- synchronized (getClass()) {
- 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();
- }
- }
-
- }
-