import java.awt.peer.CanvasPeer; //导入依赖的package包/类
public static boolean attachFakePeer(Component comp) {
    if (comp == null || comp.isDisplayable()
          || comp instanceof javax.swing.JComponent
          || comp instanceof javax.swing.RootPaneContainer)
        return false;

    FakePeer peer = null;

    if (comp instanceof Label)
        peer = getFakePeer(LabelPeer.class, new FakeLabelPeer((Label) comp));
    else if (comp instanceof Button)
        peer = getFakePeer(ButtonPeer.class, new FakeButtonPeer((Button) comp));                   
    else if (comp instanceof Panel)
        peer = getFakePeer(new Class[] {ContainerPeer.class, PanelPeer.class}, new FakePanelPeer((Panel) comp));
    else if (comp instanceof TextField)
        peer = getFakePeer(new Class[] {TextFieldPeer.class, TextComponentPeer.class}, new FakeTextFieldPeer((TextField) comp));
    else if (comp instanceof TextArea)
        peer = getFakePeer(new Class[] {TextAreaPeer.class, TextComponentPeer.class}, new FakeTextAreaPeer((TextArea) comp));
    else if (comp instanceof TextComponent)
        peer = getFakePeer(TextComponentPeer.class, new FakeTextComponentPeer((TextComponent) comp));
    else if (comp instanceof Checkbox)
        peer = getFakePeer(CheckboxPeer.class, new FakeCheckboxPeer((Checkbox) comp));
    else if (comp instanceof Choice)
        peer = getFakePeer(ChoicePeer.class, new FakeChoicePeer((Choice) comp));
    else if (comp instanceof List)
        peer = getFakePeer(ListPeer.class, new FakeListPeer((List) comp));
    else if (comp instanceof Scrollbar)
        peer = getFakePeer(ScrollbarPeer.class, new FakeScrollbarPeer((Scrollbar) comp));
    else if (comp instanceof ScrollPane)
        peer = getFakePeer(new Class[] {ContainerPeer.class, ScrollPanePeer.class}, new FakeScrollPanePeer((ScrollPane) comp));
    else if (comp instanceof Canvas)
        peer = getFakePeer(CanvasPeer.class, new FakeCanvasPeer((Canvas) comp));
    else
        return false;

    attachFakePeer(comp, peer);
    return true;
}
 

import java.awt.peer.CanvasPeer; //导入依赖的package包/类
@Override
void setGraphicsConfiguration(GraphicsConfiguration gc) {
    synchronized(getTreeLock()) {
        CanvasPeer peer = (CanvasPeer)getPeer();
        if (peer != null) {
            gc = peer.getAppropriateGraphicsConfiguration(gc);
        }
        super.setGraphicsConfiguration(gc);
    }
}
 

import java.awt.peer.CanvasPeer; //导入依赖的package包/类
@Override
void setGraphicsConfiguration(GraphicsConfiguration gc) {
    synchronized(getTreeLock()) {
        CanvasPeer peer = (CanvasPeer) this.peer;
        if (peer != null) {
            gc = peer.getAppropriateGraphicsConfiguration(gc);
        }
        super.setGraphicsConfiguration(gc);
    }
}
 

import java.awt.peer.CanvasPeer; //导入依赖的package包/类
protected CanvasPeer createCanvas(Canvas target) {
    throw new IllegalStateException("Method not implemented");
}
 

import java.awt.peer.CanvasPeer; //导入依赖的package包/类
protected CanvasPeer createCanvas(Canvas target)
{
  return new SwingCanvasPeer(target);
}
 

import java.awt.peer.CanvasPeer; //导入依赖的package包/类
protected CanvasPeer createCanvas (Canvas c)
{
  checkHeadless();
  return new GtkCanvasPeer (c);
}
 

import java.awt.peer.CanvasPeer; //导入依赖的package包/类
protected CanvasPeer createCanvas(Canvas target)
{
  return new QtCanvasPeer( this, target );
}
 

import java.awt.peer.CanvasPeer; //导入依赖的package包/类
protected CanvasPeer createCanvas(Canvas target)
{
  throw new HeadlessException();
}
 

import java.awt.peer.CanvasPeer; //导入依赖的package包/类
protected CanvasPeer createCanvas (Canvas c) 
{
  checkHeadless();
  return new GtkCanvasPeer (c);
}
 

import java.awt.peer.CanvasPeer; //导入依赖的package包/类
@Override
protected CanvasPeer createCanvas(Canvas target) {
    return new GCanvasPeer(target);
}
 

import java.awt.peer.CanvasPeer; //导入依赖的package包/类
/**
 * Creates a peer object for the specified <code>Canvas</code>.
 *
 * @param target The <code>Canvas</code> to create the peer for.
 *
 * @return The peer for the specified <code>Canvas</code> object.
 */
protected abstract CanvasPeer createCanvas(Canvas target);
 

import java.awt.peer.CanvasPeer; //导入依赖的package包/类
/**
 * Creates a SwingCanvasPeer.
 *
 * @param canvas the AWT canvas
 *
 * @return the Swing canvas peer
 */
protected CanvasPeer createCanvas(Canvas canvas)
{
  return new SwingCanvasPeer(canvas);
}