Patch: GLightweightPeer,LightweightPeer,Toolkit allow creation and display of lightweight components

[Scott Gilbertson]

These changes allow creation and display of lighweight components by
directly subclassing java.awt.Component and java.awt.Container.  It seems a
bit inelegant to make LightweightPeer extend ContainerPeer, but it works
well and doesn't really cost anything.  I can't offhand think of a situation
where you'd need to be able to distinguish between a ContainerPeer and a
ComponentPeer by inspecting the class.

Index: libjava/ChangeLog
from  Scott Gilbertson  <scottg@mantatest.com>

 * java/awt/GLightweightPeer.java, java/awt/peer/LightweightPeer.java,
java/awt/Toolkit.java: Implemented lightweight
   Component and Container

diff -r -up gcc.patched/libjava/gnu/java/awt/GLightweightPeer.java
gcc/libjava/gnu/java/awt/GLightweightPeer.java
--- gcc.patched/libjava/gnu/java/awt/GLightweightPeer.java 2002-12-02
11:45:18.000000000 -0500
+++ gcc/libjava/gnu/java/awt/GLightweightPeer.java 2002-12-02
12:24:03.000000000 -0500
@@ -49,6 +49,26 @@ public class GLightweightPeer implements

   public GLightweightPeer() {}

+  //---------- java.awt.peer.ContainerPeer implementation:
+  private static final Insets BLANK_INSETS = new Insets(0, 0, 0, 0);
+  public Insets getInsets()
+  {
+    return (Insets)BLANK_INSETS.clone();
+  }
+
+  public Insets insets ()
+  {
+    return getInsets ();
+  }
+
+  public void beginValidate()
+  {
+  }
+
+  public void endValidate()
+  {
+  }
+
   // -------- java.awt.peer.ComponentPeer implementation:

   public int checkImage(Image img, int width, int height, ImageObserver o)
diff -r -up gcc.patched/libjava/java/awt/peer/LightweightPeer.java
gcc/libjava/java/awt/peer/LightweightPeer.java
--- gcc.patched/libjava/java/awt/peer/LightweightPeer.java 2002-12-02
11:45:19.000000000 -0500
+++ gcc/libjava/java/awt/peer/LightweightPeer.java 2002-11-20
12:11:59.000000000 -0500
@@ -38,7 +38,7 @@ exception statement from your version. *

 package java.awt.peer;

-public interface LightweightPeer extends ComponentPeer
+public interface LightweightPeer extends ContainerPeer // was
ComponentPeer - changed to allow lightweight Container
 {

 } // interface LightweightPeer
diff -r -up gcc.patched/libjava/java/awt/Toolkit.java
gcc/libjava/java/awt/Toolkit.java
--- gcc.patched/libjava/java/awt/Toolkit.java 2002-12-02
11:45:19.000000000 -0500
+++ gcc/libjava/java/awt/Toolkit.java 2002-11-20 12:14:02.000000000 -0500
@@ -452,7 +452,7 @@ createCheckboxMenuItem(CheckboxMenuItem
 protected LightweightPeer
 createComponent(Component target)
 {
-  return null;
+  return gnu.java.awt.GLightweightPeer.INSTANCE;
 }

 /*************************************************************************/