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AWT/Swing merge from GNU Classpath.

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From-SVN: r56147
This commit is contained in:
Bryce McKinlay 2002-08-09 04:26:17 +00:00 • committed by Bryce McKinlay
parent 097684ce62
commit 7bde45b2eb
490 changed files with 86038 additions and 9753 deletions
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142
libjava/java/awt/Panel.java
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@ -1,4 +1,4 @@
/* Panel.java -- Simple container object.
/* Panel.java -- Simple container object
Copyright (C) 1999, 2002 Free Software Foundation, Inc.
This file is part of GNU Classpath.
@ -41,59 +41,109 @@ package java.awt;
import java.awt.peer.PanelPeer;
import java.awt.peer.ContainerPeer;
import java.awt.peer.ComponentPeer;
import java.io.Serializable;
import javax.accessibility.Accessible;
import javax.accessibility.AccessibleContext;
import javax.accessibility.AccessibleRole;
/**
* A panel is a simple container class.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
*/
public class Panel extends Container implements java.io.Serializable
{
/*
* Constructors
* A panel is a simple container class. It's default layout is the
* <code>FlowLayout</code> manager.
*
* @author Aaron M. Renn <arenn@urbanophile.com>
* @author Eric Blake <ebb9@email.byu.edu>
* @see FlowLayout
* @since 1.0
* @status updated to 1.4
*/
/**
* Initializes a new instance of <code>Panel</code> that has a default
* layout manager of <code>FlowLayout</code>.
*/
public
Panel()
public class Panel extends Container implements Accessible
{
this(new FlowLayout());
}
/**
* Compatible with JDK 1.0+.
*/
private static final long serialVersionUID = -2728009084054400034L;
/*************************************************************************/
/** The cached accessible context. */
private transient AccessibleContext context;
/**
* Initializes a new instance of <code>Panel</code> with the specified
* layout manager.
*
* @param layoutManager The layout manager for this object.
*/
public
Panel(LayoutManager layoutManager)
{
setLayout(layoutManager);
}
/**
* Initializes a new instance of <code>Panel</code> that has a default
* layout manager of <code>FlowLayout</code>.
*/
public Panel()
{
this(new FlowLayout());
}
/*************************************************************************/
/**
* Initializes a new instance of <code>Panel</code> with the specified
* layout manager.
*
* @param layoutManager the layout manager for this object
* @since 1.1
*/
public Panel(LayoutManager layoutManager)
{
setLayout(layoutManager);
}
/*
* Instance Methods
*/
/**
* Notifies this object to create its native peer.
*
* @see #isDisplayable()
* @see #removeNotify()
*/
public void addNotify()
{
if (peer == null)
peer = getToolkit().createPanel(this);
super.addNotify();
}
/**
* Notifies this object to create its native peer.
*/
public void
addNotify()
{
if (peer == null)
peer = getToolkit().createPanel(this);
super.addNotify();
}
/**
* Gets the AccessibleContext associated with this panel, creating one if
* necessary. This always returns an instance of {@link AccessibleAWTPanel}.
*
* @return the accessibility context of this panel
* @since 1.3
*/
public AccessibleContext getAccessibleContext()
{
if (context == null)
context = new AccessibleAWTPanel();
return context;
}
/**
* This class provides accessibility support for Panels, and is the
* runtime type returned by {@link #getAccessibleContext()}.
*
* @author Eric Blake <ebb9@email.byu.edu>
* @since 1.3
*/
protected class AccessibleAWTPanel extends AccessibleAWTContainer
{
/**
* Compatible with JDK 1.4+.
*/
private static final long serialVersionUID = -6409552226660031050L;
/**
* The default constructor.
*/
protected AccessibleAWTPanel()
{
}
/**
* Get the role of this accessible object, a panel.
*
* @return the role of the object
* @see AccessibleRole#PANEL
*/
public AccessibleRole getAccessibleRole()
{
return AccessibleRole.PANEL;
}
} // class AccessibleAWTPanel
} // class Panel