Applet.java, [...]: New versions from Classpath.
* java/applet/Applet.java, java/applet/AppletContext.java, java/applet/AppletStub.java, java/applet/AudioClip.java, java/awt/CardLayout.java, java/awt/ContainerOrderFocusTraversalPolicy.java, java/awt/Cursor.java, java/awt/Event.java, java/awt/Frame.java, java/awt/GridBagConstraints.java, java/awt/GridBagLayout.java, java/awt/GridLayout.java, java/awt/color/ColorSpace.java, java/awt/color/ICC_ColorSpace.java, java/awt/color/ICC_Profile.java, java/awt/color/ICC_ProfileGray.java, java/awt/color/ICC_ProfileRGB.java, java/awt/datatransfer/DataFlavor.java, java/awt/dnd/DragSourceContext.java, java/awt/dnd/DropTarget.java, java/awt/dnd/DropTargetContext.java, java/awt/event/KeyEvent.java: New versions from Classpath. * Makefile.in: Rebuilt. * Makefile.am (awt_java_source_files): Added ICC_ProfileGray and ICC_ProfileRGB. From-SVN: r58964
This commit is contained in:
Tom Tromey
Tom Tromey
parent
adf94cac56
commit
f7aa343f42
25 changed files with 1261 additions and 612 deletions
|
|
@ -1,23 +1,23 @@
|
|||
/* Applet.java -- Java base applet class
|
||||
Copyright (C) 1999 Free Software Foundation, Inc.
|
||||
|
||||
Copyright (C) 1999, 2002 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of GNU Classpath.
|
||||
|
||||
|
||||
GNU Classpath is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2, or (at your option)
|
||||
any later version.
|
||||
|
||||
|
||||
GNU Classpath is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
General Public License for more details.
|
||||
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with GNU Classpath; see the file COPYING. If not, write to the
|
||||
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA.
|
||||
|
||||
|
||||
Linking this library statically or dynamically with other modules is
|
||||
making a combined work based on this library. Thus, the terms and
|
||||
conditions of the GNU General Public License cover the whole
|
||||
|
|
@ -39,269 +39,469 @@ exception statement from your version. */
|
|||
package java.applet;
|
||||
|
||||
import java.awt.Dimension;
|
||||
import java.awt.GraphicsEnvironment;
|
||||
import java.awt.HeadlessException;
|
||||
import java.awt.Image;
|
||||
import java.awt.Panel;
|
||||
import java.io.IOException;
|
||||
import java.io.ObjectInputStream;
|
||||
import java.net.MalformedURLException;
|
||||
import java.net.URL;
|
||||
import java.util.Locale;
|
||||
import javax.accessibility.AccessibleContext;
|
||||
import javax.accessibility.AccessibleRole;
|
||||
import javax.accessibility.AccessibleState;
|
||||
import javax.accessibility.AccessibleStateSet;
|
||||
|
||||
/**
|
||||
* This is the base applet class. An applet is a Java program that
|
||||
* runs inside a web browser or other applet viewer in a restricted
|
||||
* environment.
|
||||
*
|
||||
* @author Aaron M. Renn (arenn@urbanophile.com)
|
||||
*/
|
||||
public class Applet extends java.awt.Panel implements java.io.Serializable
|
||||
* This is the base applet class. An applet is a Java program that
|
||||
* runs inside a web browser or other applet viewer in a restricted
|
||||
* environment.
|
||||
*
|
||||
* <p>To be useful, a subclass should override at least start(). Also useful
|
||||
* are init, stop, and destroy for control purposes, and getAppletInfo and
|
||||
* getParameterInfo for descriptive purposes.
|
||||
*
|
||||
* @author Aaron M. Renn <arenn@urbanophile.com>
|
||||
* @author Eric Blake <ebb9@email.byu.edu>
|
||||
* @since 1.0
|
||||
* @status updated to 1.4
|
||||
*/
|
||||
public class Applet extends Panel
|
||||
{
|
||||
// The applet stub for this applet
|
||||
private AppletStub stub;
|
||||
/**
|
||||
* Compatible with JDK 1.0+.
|
||||
*/
|
||||
private static final long serialVersionUID = -5836846270535785031L;
|
||||
|
||||
/** The applet stub for this applet. */
|
||||
private transient AppletStub stub;
|
||||
|
||||
/**
|
||||
* Default constructor for subclasses.
|
||||
*/
|
||||
public Applet() {}
|
||||
* The accessibility context for this applet.
|
||||
*
|
||||
* @serial the accessibleContext for this
|
||||
* @since 1.2
|
||||
*/
|
||||
private AccessibleContext accessibleContext;
|
||||
|
||||
/**
|
||||
* Returns the URL of the document this applet is embedded in.
|
||||
*
|
||||
* @return The URL of the document this applet is embedded in.
|
||||
*/
|
||||
public URL getDocumentBase()
|
||||
* Default constructor for subclasses.
|
||||
*
|
||||
* @throws HeadlessException if in a headless environment
|
||||
*/
|
||||
public Applet()
|
||||
{
|
||||
return (stub.getDocumentBase ());
|
||||
if (GraphicsEnvironment.isHeadless())
|
||||
throw new HeadlessException();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the URL of the code base for this applet.
|
||||
*
|
||||
* @return The URL of the code base for this applet.
|
||||
*/
|
||||
public URL getCodeBase()
|
||||
{
|
||||
return (stub.getCodeBase ());
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the value of the specified parameter that was specified in
|
||||
* the <APPLET> tag for this applet.
|
||||
*
|
||||
* @param name The parameter name.
|
||||
*
|
||||
* @param value The parameter value, or <code>null</code> if the parameter
|
||||
* does not exist.
|
||||
*/
|
||||
public String getParameter(String name)
|
||||
{
|
||||
return (stub.getParameter (name));
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the applet context for this applet.
|
||||
*
|
||||
* @return The applet context for this applet.
|
||||
*/
|
||||
public AppletContext getAppletContext()
|
||||
{
|
||||
return (stub.getAppletContext ());
|
||||
}
|
||||
|
||||
/**
|
||||
* Tests whether or not this applet is currently active.
|
||||
*
|
||||
* @return <code>true</code> if this applet is active, <code>false</code>
|
||||
* otherwise.
|
||||
*/
|
||||
public boolean isActive()
|
||||
{
|
||||
return (stub.isActive ());
|
||||
}
|
||||
|
||||
/**
|
||||
* Requests that the applet window for this applet be resized.
|
||||
*
|
||||
* @param width The new width in pixels.
|
||||
* @param height The new height in pixels.
|
||||
*/
|
||||
public void resize(int width, int height)
|
||||
{
|
||||
stub.appletResize (width, height);
|
||||
}
|
||||
|
||||
/**
|
||||
* Requests that the applet window for this applet be resized.
|
||||
*
|
||||
* @param dim The <code>Dimension</code> object with the requested
|
||||
* width and height.
|
||||
*/
|
||||
public void resize(Dimension dim)
|
||||
{
|
||||
resize (dim.width, dim.height);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an audio clip from the specified URL.
|
||||
*
|
||||
* @param url The URL of the audio clip.
|
||||
*
|
||||
* @return The retrieved audio clip.
|
||||
*/
|
||||
public AudioClip getAudioClip(URL url)
|
||||
{
|
||||
return (getAppletContext ().getAudioClip (url));
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an audio clip from the specified URL and name
|
||||
*
|
||||
* @param url The base URL of the audio clip.
|
||||
* @param name The name of the clip relative to the URL.
|
||||
*
|
||||
* @return The retrieved audio clip.
|
||||
*/
|
||||
public AudioClip getAudioClip(URL url, String name)
|
||||
{
|
||||
try
|
||||
{
|
||||
return (getAppletContext ().getAudioClip (new URL (url.toExternalForm()
|
||||
+ name)));
|
||||
}
|
||||
catch(Exception e)
|
||||
{
|
||||
return (getAudioClip (url));
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Loads and plays the audio clip pointed to by the specified URL.
|
||||
*
|
||||
* @param The URL of the audio clip.
|
||||
*/
|
||||
public void play (URL url)
|
||||
{
|
||||
getAudioClip (url).play ();
|
||||
}
|
||||
|
||||
/**
|
||||
* Loads and plays the audio clip pointed to by the specified URL.
|
||||
*
|
||||
* @param The base URL of the audio clip.
|
||||
* @param name The name of the audio clip relative to the URL.
|
||||
*/
|
||||
public void play (URL url, String name)
|
||||
{
|
||||
getAudioClip (url, name).play ();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an image from the specified URL. Note that the image is not
|
||||
* actually retrieved until the applet attempts to display it, so this
|
||||
* method returns immediately.
|
||||
*
|
||||
* @param url The URL of the image.
|
||||
*
|
||||
* @return The retrieved image.
|
||||
*/
|
||||
public Image getImage(URL url)
|
||||
{
|
||||
return (getAppletContext ().getImage (url));
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an image from the specified URL. Note that the image is not
|
||||
* actually retrieved until the applet attempts to display it, so this
|
||||
* method returns immediately.
|
||||
*
|
||||
* @param url The base URL of the image.
|
||||
* @param name The name of the image relative to the URL.
|
||||
*
|
||||
* @return The retrieved image.
|
||||
*/
|
||||
public Image getImage(URL url, String name)
|
||||
{
|
||||
try
|
||||
{
|
||||
return (getAppletContext ().getImage (new URL (url.toExternalForm()
|
||||
+ name)));
|
||||
}
|
||||
catch(Exception e)
|
||||
{
|
||||
return (getImage (url));
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the locale for this applet, if it has been set. If no applet
|
||||
* specific locale has been set, the default locale is returned.
|
||||
*
|
||||
* @return The locale for this applet.
|
||||
*/
|
||||
public Locale getLocale()
|
||||
{
|
||||
return (super.getLocale ());
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a descriptive string with applet defined information. The
|
||||
* implementation in this class returns <code>null</code>. Applets who
|
||||
* wish to return this information should override.
|
||||
*
|
||||
* @return A string describing the applet.
|
||||
*/
|
||||
public String getAppletInfo()
|
||||
{
|
||||
return (null);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a list of parameters this applet supports. Each element of
|
||||
* the array is a list of three strings with the name of the parameter,
|
||||
* the data type or valid values, and a description. This method is
|
||||
* optional and the default implementation returns <code>null</code>.
|
||||
*
|
||||
* @return The list of parameters supported by this applet.
|
||||
*/
|
||||
public String[][] getParameterInfo()
|
||||
{
|
||||
return (null);
|
||||
}
|
||||
|
||||
/**
|
||||
* This method is called when the applet is first loaded. The default
|
||||
* implementation does nothing. Applets that wish to do one time
|
||||
* initialization should override.
|
||||
*/
|
||||
public void init() {}
|
||||
|
||||
/**
|
||||
* This method is called when the applet is being unloaded. The default
|
||||
* implementation does nothing. Applets that need to clean up resources
|
||||
* on exit should override.
|
||||
*/
|
||||
public void destroy() {}
|
||||
|
||||
/**
|
||||
* This method is called when the applet should start running. This is
|
||||
* normally each time a web page containing it is loaded. The default
|
||||
* implemention does nothing. Subclasses should override.
|
||||
*/
|
||||
public void start() {}
|
||||
|
||||
/**
|
||||
* This method is called when the applet should stop running. This is
|
||||
* normally when the next web page is loaded. The default implementation
|
||||
* does nothing.
|
||||
*/
|
||||
public void stop() {}
|
||||
|
||||
/**
|
||||
* The browser calls this method to set the applet's stub, which is the
|
||||
* low level interface to the browser.
|
||||
*
|
||||
* @param stub The applet stub for this applet.
|
||||
*/
|
||||
public final void setStub (AppletStub stub)
|
||||
* The browser calls this method to set the applet's stub, which is the
|
||||
* low level interface to the browser. Manually setting this to null is
|
||||
* asking for problems down the road.
|
||||
*
|
||||
* @param stub the applet stub for this applet
|
||||
*/
|
||||
public final void setStub(AppletStub stub)
|
||||
{
|
||||
this.stub = stub;
|
||||
}
|
||||
|
||||
} // class Applet
|
||||
/**
|
||||
* Tests whether or not this applet is currently active. An applet is active
|
||||
* just before the browser invokes start(), and becomes inactive just
|
||||
* before the browser invokes stop().
|
||||
*
|
||||
* @return <code>true</code> if this applet is active
|
||||
*/
|
||||
public boolean isActive()
|
||||
{
|
||||
return stub.isActive();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the basename URL of the document this applet is embedded in. This
|
||||
* is everything up to the final '/'.
|
||||
*
|
||||
* @return the URL of the document this applet is embedded in
|
||||
* @see #getCodeBase()
|
||||
*/
|
||||
public URL getDocumentBase()
|
||||
{
|
||||
return stub.getDocumentBase();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the URL of the code base for this applet.
|
||||
*
|
||||
* @return the URL of the code base for this applet
|
||||
*/
|
||||
public URL getCodeBase()
|
||||
{
|
||||
return stub.getCodeBase();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the value of the specified parameter that was specified in
|
||||
* the <code><APPLET></code> tag for this applet.
|
||||
*
|
||||
* @param name the parameter name
|
||||
* @return the parameter value, or null if the parameter does not exist
|
||||
* @throws NullPointerException if name is null
|
||||
*/
|
||||
public String getParameter(String name)
|
||||
{
|
||||
return stub.getParameter(name);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the applet context for this applet.
|
||||
*
|
||||
* @return the applet context for this applet
|
||||
*/
|
||||
public AppletContext getAppletContext()
|
||||
{
|
||||
return stub.getAppletContext();
|
||||
}
|
||||
|
||||
/**
|
||||
* Requests that the applet window for this applet be resized.
|
||||
*
|
||||
* @param width the new width in pixels
|
||||
* @param height the new height in pixels
|
||||
*/
|
||||
public void resize(int width, int height)
|
||||
{
|
||||
stub.appletResize(width, height);
|
||||
}
|
||||
|
||||
/**
|
||||
* Requests that the applet window for this applet be resized.
|
||||
*
|
||||
* @param dim the requested dimensions
|
||||
* @throws NullPointerException if dim is null
|
||||
*/
|
||||
public void resize(Dimension dim)
|
||||
{
|
||||
resize(dim.width, dim.height);
|
||||
}
|
||||
|
||||
/**
|
||||
* Displays the specified message in the status window if that window
|
||||
* exists.
|
||||
*
|
||||
* @param message the status message, may be null
|
||||
*/
|
||||
public void showStatus(String message)
|
||||
{
|
||||
getAppletContext().showStatus(message);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an image from the specified URL. Note that the image is not
|
||||
* actually retrieved until the applet attempts to display it, so this
|
||||
* method returns immediately.
|
||||
*
|
||||
* @param url the URL of the image
|
||||
* @return the retrieved image
|
||||
* @throws NullPointerException if url is null
|
||||
*/
|
||||
public Image getImage(URL url)
|
||||
{
|
||||
return getAppletContext().getImage(url);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an image from the specified absolute URL, and relative path
|
||||
* from that URL. Note that the image is not actually retrieved until the
|
||||
* applet attempts to display it, so this method returns immediately.
|
||||
* This calls <code>getImage(new URL(url, name))</code>, but if building
|
||||
* the new URL fails, this returns null.
|
||||
*
|
||||
* @param url the base URL of the image
|
||||
* @param name the name of the image relative to the URL
|
||||
* @return the retrieved image, or null on failure
|
||||
* @see #getImage(URL)
|
||||
*/
|
||||
public Image getImage(URL url, String name)
|
||||
{
|
||||
try
|
||||
{
|
||||
return getImage(new URL(url, name));
|
||||
}
|
||||
catch (MalformedURLException e)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an audio clip from the specified URL. This clip is not tied to
|
||||
* any particular applet.
|
||||
*
|
||||
* XXX Classpath does not yet implement this.
|
||||
*
|
||||
* @param url the URL of the audio clip
|
||||
* @return the retrieved audio clip
|
||||
* @throws NullPointerException if url is null
|
||||
* @see #getAudioClip(URL)
|
||||
* @since 1.2
|
||||
*/
|
||||
public static final AudioClip newAudioClip(URL url)
|
||||
{
|
||||
// This requires an implementation of AudioClip in gnu.java.applet.
|
||||
throw new Error("Not implemented");
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an audio clip from the specified URL. Note that the clip is not
|
||||
* actually retrieved until the applet attempts to play it, so this method
|
||||
* returns immediately.
|
||||
*
|
||||
* @param url the URL of the audio clip
|
||||
* @return the retrieved audio clip
|
||||
* @throws NullPointerException if url is null
|
||||
*/
|
||||
public AudioClip getAudioClip(URL url)
|
||||
{
|
||||
return getAppletContext().getAudioClip(url);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an audio clip from the specified absolute URL, and relative path
|
||||
* from that URL. Note that the clip is not actually retrieved until the
|
||||
* applet attempts to play it, so this method returns immediately. This
|
||||
* calls <code>getAudioClip(new URL(url, name))</code>, but if building
|
||||
* the new URL fails, this returns null.
|
||||
*
|
||||
* @param url the base URL of the audio clip
|
||||
* @param name the name of the clip relative to the URL
|
||||
* @return the retrieved audio clip, or null on failure
|
||||
* @see #getAudioClip(URL)
|
||||
*/
|
||||
public AudioClip getAudioClip(URL url, String name)
|
||||
{
|
||||
try
|
||||
{
|
||||
return getAudioClip(new URL(url, name));
|
||||
}
|
||||
catch (MalformedURLException e)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a descriptive string with applet defined information. The
|
||||
* implementation in this class returns <code>null</code>, so subclasses
|
||||
* must override to return information.
|
||||
*
|
||||
* @return a string describing the author, version, and applet copyright
|
||||
*/
|
||||
public String getAppletInfo()
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the locale for this applet, if it has been set. If no applet
|
||||
* specific locale has been set, the default locale is returned.
|
||||
*
|
||||
* @return the locale for this applet
|
||||
* @see Component#setLocale(Locale)
|
||||
* @since 1.1
|
||||
*/
|
||||
public Locale getLocale()
|
||||
{
|
||||
return super.getLocale();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a list of parameters this applet supports. Each element of
|
||||
* the outer array is an array of three strings with the name of the
|
||||
* parameter, the data type or valid values, and a description. This
|
||||
* method is optional and the default implementation returns null.
|
||||
*
|
||||
* @return the list of parameters supported by this applet
|
||||
*/
|
||||
public String[][] getParameterInfo()
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Loads and plays the audio clip pointed to by the specified URL. This does
|
||||
* nothing if the URL does not point to a valid audio clip.
|
||||
*
|
||||
* @param url the URL of the audio clip
|
||||
* @throws NullPointerException if url is null
|
||||
* @see #getAudioClip(URL)
|
||||
*/
|
||||
public void play(URL url)
|
||||
{
|
||||
AudioClip ac = getAudioClip(url);
|
||||
try
|
||||
{
|
||||
ac.play();
|
||||
}
|
||||
catch (Exception ignored)
|
||||
{
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Loads and plays the audio clip pointed to by the specified absolute URL,
|
||||
* and relative path from that URL. This does nothing if the URL cannot be
|
||||
* constructed, or if it does not point to a valid audio clip.
|
||||
*
|
||||
* @param url the base URL of the audio clip
|
||||
* @param name the name of the audio clip relative to the URL
|
||||
* @see #getAudioClip(URL, String)
|
||||
* @see #play(URL)
|
||||
*/
|
||||
public void play(URL url, String name)
|
||||
{
|
||||
try
|
||||
{
|
||||
getAudioClip(url, name).play();
|
||||
}
|
||||
catch (Exception ignored)
|
||||
{
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* This method is called when the applet is first loaded, before start().
|
||||
* The default implementation does nothing; override to do any one-time
|
||||
* initialization.
|
||||
*
|
||||
* @see #start()
|
||||
* @see #stop()
|
||||
* @see #destroy()
|
||||
*/
|
||||
public void init()
|
||||
{
|
||||
}
|
||||
|
||||
/**
|
||||
* This method is called when the applet should start running. This is
|
||||
* normally each time a web page containing it is loaded. The default
|
||||
* implemention does nothing; override for your applet to be useful.
|
||||
*
|
||||
* @see #init()
|
||||
* @see #stop()
|
||||
* @see #destroy()
|
||||
*/
|
||||
public void start()
|
||||
{
|
||||
}
|
||||
|
||||
/**
|
||||
* This method is called when the applet should stop running. This is
|
||||
* normally when the next web page is loaded. The default implementation
|
||||
* does nothing; override for your applet to stop using resources when
|
||||
* it is no longer visible, but may be restarted soon.
|
||||
*
|
||||
* @see #init()
|
||||
* @see #start()
|
||||
* @see #destroy()
|
||||
*/
|
||||
public void stop()
|
||||
{
|
||||
}
|
||||
|
||||
/**
|
||||
* This method is called when the applet is being unloaded. The default
|
||||
* implementation does nothing; override for your applet to clean up
|
||||
* resources on exit.
|
||||
*
|
||||
* @see #init()
|
||||
* @see #start()
|
||||
* @see #stop()
|
||||
*/
|
||||
public void destroy()
|
||||
{
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets the AccessibleContext associated with this applet, creating one if
|
||||
* necessary. This always returns an instance of {@link AccessibleApplet}.
|
||||
*
|
||||
* @return the accessibility context of this applet
|
||||
* @since 1.3
|
||||
*/
|
||||
public AccessibleContext getAccessibleContext()
|
||||
{
|
||||
if (accessibleContext == null)
|
||||
accessibleContext = new AccessibleApplet();
|
||||
return accessibleContext;
|
||||
}
|
||||
|
||||
/**
|
||||
* Read an applet from an object stream. This checks for a headless
|
||||
* environment, then does the normal read.
|
||||
*
|
||||
* @param s the stream to read from
|
||||
* @throws ClassNotFoundException if a class is not found
|
||||
* @throws IOException if deserialization fails
|
||||
* @throws HeadlessException if this is a headless environment
|
||||
* @see GraphicsEnvironment#isHeadless()
|
||||
* @since 1.4
|
||||
*/
|
||||
private void readObject(ObjectInputStream s)
|
||||
throws ClassNotFoundException, IOException
|
||||
{
|
||||
if (GraphicsEnvironment.isHeadless())
|
||||
throw new HeadlessException();
|
||||
s.defaultReadObject();
|
||||
}
|
||||
|
||||
/**
|
||||
* This class provides accessibility support for Applets, and is the
|
||||
* runtime type returned by {@link #getAccessibleContext()}.
|
||||
*
|
||||
* @author Eric Blake <ebb9@email.byu.edu>
|
||||
* @since 1.3
|
||||
*/
|
||||
protected class AccessibleApplet extends AccessibleAWTPanel
|
||||
{
|
||||
/**
|
||||
* Compatible with JDK 1.4+.
|
||||
*/
|
||||
private static final long serialVersionUID = 8127374778187708896L;
|
||||
|
||||
/**
|
||||
* The default constructor.
|
||||
*/
|
||||
protected AccessibleApplet()
|
||||
{
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the role of this accessible object, a frame.
|
||||
*
|
||||
* @return the role of the object
|
||||
* @see AccessibleRole#FRAME
|
||||
*/
|
||||
public AccessibleRole getAccessibleRole()
|
||||
{
|
||||
return AccessibleRole.FRAME;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the state set of this accessible object. In addition to the default
|
||||
* states of a Component, the applet can also be active.
|
||||
*
|
||||
* @return the role of the object
|
||||
* @see AccessibleState
|
||||
*/
|
||||
public AccessibleStateSet getAccessibleStateSet()
|
||||
{
|
||||
AccessibleStateSet s = super.getAccessibleStateSet();
|
||||
if (isActive())
|
||||
s.add(AccessibleState.ACTIVE);
|
||||
return s;
|
||||
}
|
||||
} // class AccessibleApplet
|
||||
} // class Applet
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue