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GraphicsCallback.java
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/*
* Copyright (c) 1999, 2000, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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*/
package java.awt;
import java.awt.peer.LightweightPeer;
import sun.awt.SunGraphicsCallback;
abstract class GraphicsCallback extends SunGraphicsCallback {
static final class PaintCallback extends GraphicsCallback {
private static PaintCallback instance = new PaintCallback();
private PaintCallback() {}
public void run(Component comp, Graphics cg) {
comp.paint(cg);
}
static PaintCallback getInstance() {
return instance;
}
}
static final class PrintCallback extends GraphicsCallback {
private static PrintCallback instance = new PrintCallback();
private PrintCallback() {}
public void run(Component comp, Graphics cg) {
comp.print(cg);
}
static PrintCallback getInstance() {
return instance;
}
}
static final class PaintAllCallback extends GraphicsCallback {
private static PaintAllCallback instance = new PaintAllCallback();
private PaintAllCallback() {}
public void run(Component comp, Graphics cg) {
comp.paintAll(cg);
}
static PaintAllCallback getInstance() {
return instance;
}
}
static final class PrintAllCallback extends GraphicsCallback {
private static PrintAllCallback instance = new PrintAllCallback();
private PrintAllCallback() {}
public void run(Component comp, Graphics cg) {
comp.printAll(cg);
}
static PrintAllCallback getInstance() {
return instance;
}
}
static final class PeerPaintCallback extends GraphicsCallback {
private static PeerPaintCallback instance = new PeerPaintCallback();
private PeerPaintCallback() {}
public void run(Component comp, Graphics cg) {
comp.validate();
if (comp.peer instanceof LightweightPeer) {
comp.lightweightPaint(cg);
} else {
comp.peer.paint(cg);
}
}
static PeerPaintCallback getInstance() {
return instance;
}
}
static final class PeerPrintCallback extends GraphicsCallback {
private static PeerPrintCallback instance = new PeerPrintCallback();
private PeerPrintCallback() {}
public void run(Component comp, Graphics cg) {
comp.validate();
if (comp.peer instanceof LightweightPeer) {
comp.lightweightPrint(cg);
} else {
comp.peer.print(cg);
}
}
static PeerPrintCallback getInstance() {
return instance;
}
}
static final class PaintHeavyweightComponentsCallback
extends GraphicsCallback
{
private static PaintHeavyweightComponentsCallback instance =
new PaintHeavyweightComponentsCallback();
private PaintHeavyweightComponentsCallback() {}
public void run(Component comp, Graphics cg) {
if (comp.peer instanceof LightweightPeer) {
comp.paintHeavyweightComponents(cg);
} else {
comp.paintAll(cg);
}
}
static PaintHeavyweightComponentsCallback getInstance() {
return instance;
}
}
static final class PrintHeavyweightComponentsCallback
extends GraphicsCallback
{
private static PrintHeavyweightComponentsCallback instance =
new PrintHeavyweightComponentsCallback();
private PrintHeavyweightComponentsCallback() {}
public void run(Component comp, Graphics cg) {
if (comp.peer instanceof LightweightPeer) {
comp.printHeavyweightComponents(cg);
} else {
comp.printAll(cg);
}
}
static PrintHeavyweightComponentsCallback getInstance() {
return instance;
}
}
}