Optimize R8 configuration

* java/org/gnu/emacs/EmacsWindowManager.java (WindowConsumer):
Mark as package-local.

* java/proguard.conf: List only symbols that must be preserved,
enabling R8 to optimize the remainder.

1 files changed, 34 insertions, 5 deletions

diff --git a/java/proguard.conf b/java/proguard.conf
index 2fc974020ff..e6b08f76fe4 100644
--- a/java/proguard.conf
+++ b/java/proguard.conf
@@ -1,4 +1,4 @@
-# Trivial Proguard configuration file
+# Proguard configuration files for Emacs
 #
 # Copyright (C) 2024 Free Software Foundation, Inc.
 #
@@ -17,8 +17,37 @@
 # You should have received a copy of the GNU General Public License
 # along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 #
-# The effect of these two lines is to prevent the removal of symbol
-# names, which Emacs requires to link to functions defined in Java.
+# The effect of the following lines is to inhibit the removal of variable or
+# method symbol names from symbols referenced from C.
 
--keep,allowoptimization interface       org.gnu.emacs.*
--keep,allowoptimization class           org.gnu.emacs.* { <fields>; <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsClipboard           { <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsContextMenu         { <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsCursor              { <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsDesktopNotification { <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsDialog              { <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsDirectoryEntry      { <fields>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsFontDriver          { <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsFontDriver$*        { <fields>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsGC                  { <methods>; <fields>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsHandleObject        { <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsPixmap              { <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsService             { <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsWindow              { <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsNative              { <methods>; }
+-keep,allowoptimization class           org.gnu.emacs.EmacsNoninteractive      { <methods>; }
+-keep,allowoptimization interface       org.gnu.emacs.EmacsDrawable            { <methods>; }
+
+# And these lines inhibit the deletion of symbols that are referenced by
+# the operating system while enabling the compiler to minify or delete
+# symbols only referenced internally.
+
+-keep,allowoptimization,allowaccessmodification public class * extends android.app.Activity
+-keep,allowoptimization,allowaccessmodification public class * extends android.app.Application
+-keep,allowoptimization,allowaccessmodification public class * extends android.app.Service
+-keep,allowoptimization,allowaccessmodification public class * extends android.content.BroadcastReceiver
+-keep,allowoptimization,allowaccessmodification public class * extends android.content.ContentProvider
+
+# Local Variables:
+# truncate-lines: t
+# indent-tabs-mode: nil
+# End: